Commit | Line | Data |
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51dce24b JK |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright(c) 1999 - 2018 Intel Corporation. */ | |
92915f71 | 3 | |
92915f71 GR |
4 | /****************************************************************************** |
5 | Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code | |
6 | ******************************************************************************/ | |
dbd9636e JK |
7 | |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
9 | ||
92915f71 | 10 | #include <linux/types.h> |
dadcd65f | 11 | #include <linux/bitops.h> |
92915f71 GR |
12 | #include <linux/module.h> |
13 | #include <linux/pci.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/vmalloc.h> | |
16 | #include <linux/string.h> | |
17 | #include <linux/in.h> | |
18 | #include <linux/ip.h> | |
19 | #include <linux/tcp.h> | |
70a10e25 | 20 | #include <linux/sctp.h> |
92915f71 | 21 | #include <linux/ipv6.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
92915f71 GR |
23 | #include <net/checksum.h> |
24 | #include <net/ip6_checksum.h> | |
25 | #include <linux/ethtool.h> | |
01789349 | 26 | #include <linux/if.h> |
92915f71 | 27 | #include <linux/if_vlan.h> |
70c71606 | 28 | #include <linux/prefetch.h> |
2a20525b | 29 | #include <net/mpls.h> |
c7aec596 TN |
30 | #include <linux/bpf.h> |
31 | #include <linux/bpf_trace.h> | |
32 | #include <linux/atomic.h> | |
8f6617ba | 33 | #include <net/xfrm.h> |
92915f71 GR |
34 | |
35 | #include "ixgbevf.h" | |
36 | ||
3d8fe98f | 37 | const char ixgbevf_driver_name[] = "ixgbevf"; |
92915f71 | 38 | static const char ixgbevf_driver_string[] = |
422e05d1 | 39 | "Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver"; |
92915f71 | 40 | |
66c87bd5 | 41 | static char ixgbevf_copyright[] = |
7f68d430 | 42 | "Copyright (c) 2009 - 2018 Intel Corporation."; |
92915f71 GR |
43 | |
44 | static const struct ixgbevf_info *ixgbevf_info_tbl[] = { | |
c6d45171 KS |
45 | [board_82599_vf] = &ixgbevf_82599_vf_info, |
46 | [board_82599_vf_hv] = &ixgbevf_82599_vf_hv_info, | |
47 | [board_X540_vf] = &ixgbevf_X540_vf_info, | |
48 | [board_X540_vf_hv] = &ixgbevf_X540_vf_hv_info, | |
49 | [board_X550_vf] = &ixgbevf_X550_vf_info, | |
50 | [board_X550_vf_hv] = &ixgbevf_X550_vf_hv_info, | |
51 | [board_X550EM_x_vf] = &ixgbevf_X550EM_x_vf_info, | |
52 | [board_X550EM_x_vf_hv] = &ixgbevf_X550EM_x_vf_hv_info, | |
1d94f987 | 53 | [board_x550em_a_vf] = &ixgbevf_x550em_a_vf_info, |
92915f71 GR |
54 | }; |
55 | ||
56 | /* ixgbevf_pci_tbl - PCI Device ID Table | |
57 | * | |
58 | * Wildcard entries (PCI_ANY_ID) should come last | |
59 | * Last entry must be all 0s | |
60 | * | |
61 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
62 | * Class, Class Mask, private data (not used) } | |
63 | */ | |
9baa3c34 | 64 | static const struct pci_device_id ixgbevf_pci_tbl[] = { |
39ba22b4 | 65 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), board_82599_vf }, |
c6d45171 | 66 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF_HV), board_82599_vf_hv }, |
39ba22b4 | 67 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF), board_X540_vf }, |
c6d45171 | 68 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF_HV), board_X540_vf_hv }, |
47068b0d | 69 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF), board_X550_vf }, |
c6d45171 | 70 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550_VF_HV), board_X550_vf_hv }, |
47068b0d | 71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF), board_X550EM_x_vf }, |
c6d45171 | 72 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_VF_HV), board_X550EM_x_vf_hv}, |
1d94f987 | 73 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_VF), board_x550em_a_vf }, |
92915f71 GR |
74 | /* required last entry */ |
75 | {0, } | |
76 | }; | |
77 | MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl); | |
78 | ||
b8ce18cd | 79 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit Virtual Function Network Driver"); |
98674ebe | 80 | MODULE_LICENSE("GPL v2"); |
92915f71 | 81 | |
b3f4d599 | 82 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
83 | static int debug = -1; | |
84 | module_param(debug, int, 0); | |
85 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
92915f71 | 86 | |
40a13e24 MR |
87 | static struct workqueue_struct *ixgbevf_wq; |
88 | ||
9ac5c5cc ET |
89 | static void ixgbevf_service_event_schedule(struct ixgbevf_adapter *adapter) |
90 | { | |
91 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state) && | |
92 | !test_bit(__IXGBEVF_REMOVING, &adapter->state) && | |
93 | !test_and_set_bit(__IXGBEVF_SERVICE_SCHED, &adapter->state)) | |
40a13e24 | 94 | queue_work(ixgbevf_wq, &adapter->service_task); |
9ac5c5cc ET |
95 | } |
96 | ||
97 | static void ixgbevf_service_event_complete(struct ixgbevf_adapter *adapter) | |
98 | { | |
99 | BUG_ON(!test_bit(__IXGBEVF_SERVICE_SCHED, &adapter->state)); | |
100 | ||
101 | /* flush memory to make sure state is correct before next watchdog */ | |
102 | smp_mb__before_atomic(); | |
103 | clear_bit(__IXGBEVF_SERVICE_SCHED, &adapter->state); | |
104 | } | |
105 | ||
92915f71 | 106 | /* forward decls */ |
220fe050 | 107 | static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter *adapter); |
fa71ae27 | 108 | static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector); |
56e94095 | 109 | static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter); |
925f5690 ET |
110 | static bool ixgbevf_can_reuse_rx_page(struct ixgbevf_rx_buffer *rx_buffer); |
111 | static void ixgbevf_reuse_rx_page(struct ixgbevf_ring *rx_ring, | |
112 | struct ixgbevf_rx_buffer *old_buff); | |
92915f71 | 113 | |
dbf8b0d8 MR |
114 | static void ixgbevf_remove_adapter(struct ixgbe_hw *hw) |
115 | { | |
116 | struct ixgbevf_adapter *adapter = hw->back; | |
117 | ||
118 | if (!hw->hw_addr) | |
119 | return; | |
120 | hw->hw_addr = NULL; | |
121 | dev_err(&adapter->pdev->dev, "Adapter removed\n"); | |
9ac5c5cc ET |
122 | if (test_bit(__IXGBEVF_SERVICE_INITED, &adapter->state)) |
123 | ixgbevf_service_event_schedule(adapter); | |
dbf8b0d8 MR |
124 | } |
125 | ||
126 | static void ixgbevf_check_remove(struct ixgbe_hw *hw, u32 reg) | |
127 | { | |
128 | u32 value; | |
129 | ||
130 | /* The following check not only optimizes a bit by not | |
131 | * performing a read on the status register when the | |
132 | * register just read was a status register read that | |
133 | * returned IXGBE_FAILED_READ_REG. It also blocks any | |
134 | * potential recursion. | |
135 | */ | |
136 | if (reg == IXGBE_VFSTATUS) { | |
137 | ixgbevf_remove_adapter(hw); | |
138 | return; | |
139 | } | |
32c74949 | 140 | value = ixgbevf_read_reg(hw, IXGBE_VFSTATUS); |
dbf8b0d8 MR |
141 | if (value == IXGBE_FAILED_READ_REG) |
142 | ixgbevf_remove_adapter(hw); | |
143 | } | |
144 | ||
32c74949 | 145 | u32 ixgbevf_read_reg(struct ixgbe_hw *hw, u32 reg) |
dbf8b0d8 | 146 | { |
6aa7de05 | 147 | u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); |
dbf8b0d8 MR |
148 | u32 value; |
149 | ||
150 | if (IXGBE_REMOVED(reg_addr)) | |
151 | return IXGBE_FAILED_READ_REG; | |
152 | value = readl(reg_addr + reg); | |
153 | if (unlikely(value == IXGBE_FAILED_READ_REG)) | |
154 | ixgbevf_check_remove(hw, reg); | |
155 | return value; | |
156 | } | |
157 | ||
49ce9c2c | 158 | /** |
65d676c8 | 159 | * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors |
92915f71 GR |
160 | * @adapter: pointer to adapter struct |
161 | * @direction: 0 for Rx, 1 for Tx, -1 for other causes | |
162 | * @queue: queue to map the corresponding interrupt to | |
163 | * @msix_vector: the vector to map to the corresponding queue | |
dec0d8e4 | 164 | **/ |
92915f71 GR |
165 | static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction, |
166 | u8 queue, u8 msix_vector) | |
167 | { | |
168 | u32 ivar, index; | |
169 | struct ixgbe_hw *hw = &adapter->hw; | |
dec0d8e4 | 170 | |
92915f71 GR |
171 | if (direction == -1) { |
172 | /* other causes */ | |
173 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
174 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC); | |
175 | ivar &= ~0xFF; | |
176 | ivar |= msix_vector; | |
177 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar); | |
178 | } else { | |
dec0d8e4 | 179 | /* Tx or Rx causes */ |
92915f71 GR |
180 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; |
181 | index = ((16 * (queue & 1)) + (8 * direction)); | |
182 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1)); | |
183 | ivar &= ~(0xFF << index); | |
184 | ivar |= (msix_vector << index); | |
185 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar); | |
186 | } | |
187 | } | |
188 | ||
e08400b7 ET |
189 | static u64 ixgbevf_get_tx_completed(struct ixgbevf_ring *ring) |
190 | { | |
191 | return ring->stats.packets; | |
192 | } | |
92915f71 | 193 | |
e08400b7 ET |
194 | static u32 ixgbevf_get_tx_pending(struct ixgbevf_ring *ring) |
195 | { | |
196 | struct ixgbevf_adapter *adapter = netdev_priv(ring->netdev); | |
197 | struct ixgbe_hw *hw = &adapter->hw; | |
92915f71 | 198 | |
e08400b7 ET |
199 | u32 head = IXGBE_READ_REG(hw, IXGBE_VFTDH(ring->reg_idx)); |
200 | u32 tail = IXGBE_READ_REG(hw, IXGBE_VFTDT(ring->reg_idx)); | |
201 | ||
202 | if (head != tail) | |
203 | return (head < tail) ? | |
204 | tail - head : (tail + ring->count - head); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static inline bool ixgbevf_check_tx_hang(struct ixgbevf_ring *tx_ring) | |
210 | { | |
211 | u32 tx_done = ixgbevf_get_tx_completed(tx_ring); | |
212 | u32 tx_done_old = tx_ring->tx_stats.tx_done_old; | |
213 | u32 tx_pending = ixgbevf_get_tx_pending(tx_ring); | |
214 | ||
215 | clear_check_for_tx_hang(tx_ring); | |
216 | ||
217 | /* Check for a hung queue, but be thorough. This verifies | |
218 | * that a transmit has been completed since the previous | |
219 | * check AND there is at least one packet pending. The | |
220 | * ARMED bit is set to indicate a potential hang. | |
221 | */ | |
222 | if ((tx_done_old == tx_done) && tx_pending) { | |
223 | /* make sure it is true for two checks in a row */ | |
224 | return test_and_set_bit(__IXGBEVF_HANG_CHECK_ARMED, | |
225 | &tx_ring->state); | |
226 | } | |
227 | /* reset the countdown */ | |
228 | clear_bit(__IXGBEVF_HANG_CHECK_ARMED, &tx_ring->state); | |
229 | ||
230 | /* update completed stats and continue */ | |
231 | tx_ring->tx_stats.tx_done_old = tx_done; | |
232 | ||
233 | return false; | |
234 | } | |
235 | ||
9ac5c5cc ET |
236 | static void ixgbevf_tx_timeout_reset(struct ixgbevf_adapter *adapter) |
237 | { | |
238 | /* Do the reset outside of interrupt context */ | |
239 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
d5dd7c3f | 240 | set_bit(__IXGBEVF_RESET_REQUESTED, &adapter->state); |
9ac5c5cc ET |
241 | ixgbevf_service_event_schedule(adapter); |
242 | } | |
243 | } | |
244 | ||
e08400b7 ET |
245 | /** |
246 | * ixgbevf_tx_timeout - Respond to a Tx Hang | |
247 | * @netdev: network interface device structure | |
b50f7bca | 248 | * @txqueue: transmit queue hanging (unused) |
e08400b7 | 249 | **/ |
b50f7bca | 250 | static void ixgbevf_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) |
e08400b7 ET |
251 | { |
252 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
253 | ||
9ac5c5cc | 254 | ixgbevf_tx_timeout_reset(adapter); |
e08400b7 | 255 | } |
92915f71 GR |
256 | |
257 | /** | |
258 | * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes | |
fa71ae27 | 259 | * @q_vector: board private structure |
92915f71 | 260 | * @tx_ring: tx ring to clean |
8220bbc1 | 261 | * @napi_budget: Used to determine if we are in netpoll |
92915f71 | 262 | **/ |
fa71ae27 | 263 | static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector, |
8220bbc1 | 264 | struct ixgbevf_ring *tx_ring, int napi_budget) |
92915f71 | 265 | { |
fa71ae27 | 266 | struct ixgbevf_adapter *adapter = q_vector->adapter; |
7ad1a093 ET |
267 | struct ixgbevf_tx_buffer *tx_buffer; |
268 | union ixgbe_adv_tx_desc *tx_desc; | |
7f68d430 | 269 | unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; |
7ad1a093 ET |
270 | unsigned int budget = tx_ring->count / 2; |
271 | unsigned int i = tx_ring->next_to_clean; | |
92915f71 | 272 | |
10cc1bdd AD |
273 | if (test_bit(__IXGBEVF_DOWN, &adapter->state)) |
274 | return true; | |
275 | ||
7ad1a093 ET |
276 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
277 | tx_desc = IXGBEVF_TX_DESC(tx_ring, i); | |
278 | i -= tx_ring->count; | |
92915f71 | 279 | |
e757e3e1 | 280 | do { |
7ad1a093 | 281 | union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; |
e757e3e1 AD |
282 | |
283 | /* if next_to_watch is not set then there is no work pending */ | |
284 | if (!eop_desc) | |
285 | break; | |
286 | ||
287 | /* prevent any other reads prior to eop_desc */ | |
ae0c585d | 288 | smp_rmb(); |
e757e3e1 AD |
289 | |
290 | /* if DD is not set pending work has not been completed */ | |
291 | if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) | |
292 | break; | |
293 | ||
294 | /* clear next_to_watch to prevent false hangs */ | |
7ad1a093 | 295 | tx_buffer->next_to_watch = NULL; |
e757e3e1 | 296 | |
7ad1a093 ET |
297 | /* update the statistics for this packet */ |
298 | total_bytes += tx_buffer->bytecount; | |
299 | total_packets += tx_buffer->gso_segs; | |
7f68d430 SN |
300 | if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) |
301 | total_ipsec++; | |
92915f71 | 302 | |
9bdfefd2 | 303 | /* free the skb */ |
21092e9c TN |
304 | if (ring_is_xdp(tx_ring)) |
305 | page_frag_free(tx_buffer->data); | |
306 | else | |
307 | napi_consume_skb(tx_buffer->skb, napi_budget); | |
9bdfefd2 ET |
308 | |
309 | /* unmap skb header data */ | |
310 | dma_unmap_single(tx_ring->dev, | |
311 | dma_unmap_addr(tx_buffer, dma), | |
312 | dma_unmap_len(tx_buffer, len), | |
313 | DMA_TO_DEVICE); | |
314 | ||
7ad1a093 | 315 | /* clear tx_buffer data */ |
9bdfefd2 | 316 | dma_unmap_len_set(tx_buffer, len, 0); |
92915f71 | 317 | |
7ad1a093 ET |
318 | /* unmap remaining buffers */ |
319 | while (tx_desc != eop_desc) { | |
7ad1a093 ET |
320 | tx_buffer++; |
321 | tx_desc++; | |
92915f71 | 322 | i++; |
7ad1a093 ET |
323 | if (unlikely(!i)) { |
324 | i -= tx_ring->count; | |
325 | tx_buffer = tx_ring->tx_buffer_info; | |
326 | tx_desc = IXGBEVF_TX_DESC(tx_ring, 0); | |
327 | } | |
e757e3e1 | 328 | |
9bdfefd2 ET |
329 | /* unmap any remaining paged data */ |
330 | if (dma_unmap_len(tx_buffer, len)) { | |
331 | dma_unmap_page(tx_ring->dev, | |
332 | dma_unmap_addr(tx_buffer, dma), | |
333 | dma_unmap_len(tx_buffer, len), | |
334 | DMA_TO_DEVICE); | |
335 | dma_unmap_len_set(tx_buffer, len, 0); | |
336 | } | |
92915f71 GR |
337 | } |
338 | ||
7ad1a093 ET |
339 | /* move us one more past the eop_desc for start of next pkt */ |
340 | tx_buffer++; | |
341 | tx_desc++; | |
342 | i++; | |
343 | if (unlikely(!i)) { | |
344 | i -= tx_ring->count; | |
345 | tx_buffer = tx_ring->tx_buffer_info; | |
346 | tx_desc = IXGBEVF_TX_DESC(tx_ring, 0); | |
347 | } | |
348 | ||
349 | /* issue prefetch for next Tx descriptor */ | |
350 | prefetch(tx_desc); | |
351 | ||
352 | /* update budget accounting */ | |
353 | budget--; | |
354 | } while (likely(budget)); | |
355 | ||
356 | i += tx_ring->count; | |
92915f71 | 357 | tx_ring->next_to_clean = i; |
7ad1a093 ET |
358 | u64_stats_update_begin(&tx_ring->syncp); |
359 | tx_ring->stats.bytes += total_bytes; | |
360 | tx_ring->stats.packets += total_packets; | |
361 | u64_stats_update_end(&tx_ring->syncp); | |
362 | q_vector->tx.total_bytes += total_bytes; | |
363 | q_vector->tx.total_packets += total_packets; | |
7f68d430 | 364 | adapter->tx_ipsec += total_ipsec; |
92915f71 | 365 | |
e08400b7 ET |
366 | if (check_for_tx_hang(tx_ring) && ixgbevf_check_tx_hang(tx_ring)) { |
367 | struct ixgbe_hw *hw = &adapter->hw; | |
368 | union ixgbe_adv_tx_desc *eop_desc; | |
369 | ||
370 | eop_desc = tx_ring->tx_buffer_info[i].next_to_watch; | |
371 | ||
21092e9c | 372 | pr_err("Detected Tx Unit Hang%s\n" |
e08400b7 ET |
373 | " Tx Queue <%d>\n" |
374 | " TDH, TDT <%x>, <%x>\n" | |
375 | " next_to_use <%x>\n" | |
376 | " next_to_clean <%x>\n" | |
377 | "tx_buffer_info[next_to_clean]\n" | |
378 | " next_to_watch <%p>\n" | |
379 | " eop_desc->wb.status <%x>\n" | |
380 | " time_stamp <%lx>\n" | |
381 | " jiffies <%lx>\n", | |
21092e9c | 382 | ring_is_xdp(tx_ring) ? " XDP" : "", |
e08400b7 ET |
383 | tx_ring->queue_index, |
384 | IXGBE_READ_REG(hw, IXGBE_VFTDH(tx_ring->reg_idx)), | |
385 | IXGBE_READ_REG(hw, IXGBE_VFTDT(tx_ring->reg_idx)), | |
386 | tx_ring->next_to_use, i, | |
387 | eop_desc, (eop_desc ? eop_desc->wb.status : 0), | |
388 | tx_ring->tx_buffer_info[i].time_stamp, jiffies); | |
389 | ||
21092e9c TN |
390 | if (!ring_is_xdp(tx_ring)) |
391 | netif_stop_subqueue(tx_ring->netdev, | |
392 | tx_ring->queue_index); | |
e08400b7 ET |
393 | |
394 | /* schedule immediate reset if we believe we hung */ | |
9ac5c5cc | 395 | ixgbevf_tx_timeout_reset(adapter); |
e08400b7 ET |
396 | |
397 | return true; | |
398 | } | |
399 | ||
21092e9c TN |
400 | if (ring_is_xdp(tx_ring)) |
401 | return !!budget; | |
402 | ||
92915f71 | 403 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
7ad1a093 | 404 | if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) && |
f880d07b | 405 | (ixgbevf_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { |
92915f71 GR |
406 | /* Make sure that anybody stopping the queue after this |
407 | * sees the new next_to_clean. | |
408 | */ | |
409 | smp_mb(); | |
7ad1a093 | 410 | |
fb40195c AD |
411 | if (__netif_subqueue_stopped(tx_ring->netdev, |
412 | tx_ring->queue_index) && | |
92915f71 | 413 | !test_bit(__IXGBEVF_DOWN, &adapter->state)) { |
fb40195c AD |
414 | netif_wake_subqueue(tx_ring->netdev, |
415 | tx_ring->queue_index); | |
7ad1a093 | 416 | ++tx_ring->tx_stats.restart_queue; |
92915f71 | 417 | } |
92915f71 GR |
418 | } |
419 | ||
7ad1a093 | 420 | return !!budget; |
92915f71 GR |
421 | } |
422 | ||
08681618 JK |
423 | /** |
424 | * ixgbevf_rx_skb - Helper function to determine proper Rx method | |
425 | * @q_vector: structure containing interrupt and ring information | |
426 | * @skb: packet to send up | |
08681618 JK |
427 | **/ |
428 | static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector, | |
dff80520 | 429 | struct sk_buff *skb) |
08681618 | 430 | { |
688ff32d | 431 | napi_gro_receive(&q_vector->napi, skb); |
08681618 JK |
432 | } |
433 | ||
1e1429d6 FD |
434 | #define IXGBE_RSS_L4_TYPES_MASK \ |
435 | ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ | |
436 | (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ | |
437 | (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ | |
438 | (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) | |
439 | ||
440 | static inline void ixgbevf_rx_hash(struct ixgbevf_ring *ring, | |
441 | union ixgbe_adv_rx_desc *rx_desc, | |
442 | struct sk_buff *skb) | |
443 | { | |
444 | u16 rss_type; | |
445 | ||
446 | if (!(ring->netdev->features & NETIF_F_RXHASH)) | |
447 | return; | |
448 | ||
449 | rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & | |
450 | IXGBE_RXDADV_RSSTYPE_MASK; | |
451 | ||
452 | if (!rss_type) | |
453 | return; | |
454 | ||
455 | skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), | |
456 | (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? | |
457 | PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); | |
458 | } | |
459 | ||
dec0d8e4 JK |
460 | /** |
461 | * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum | |
ec62fe26 ET |
462 | * @ring: structure containig ring specific data |
463 | * @rx_desc: current Rx descriptor being processed | |
92915f71 | 464 | * @skb: skb currently being received and modified |
dec0d8e4 | 465 | **/ |
55fb277c | 466 | static inline void ixgbevf_rx_checksum(struct ixgbevf_ring *ring, |
ec62fe26 ET |
467 | union ixgbe_adv_rx_desc *rx_desc, |
468 | struct sk_buff *skb) | |
92915f71 | 469 | { |
bc8acf2c | 470 | skb_checksum_none_assert(skb); |
92915f71 GR |
471 | |
472 | /* Rx csum disabled */ | |
fb40195c | 473 | if (!(ring->netdev->features & NETIF_F_RXCSUM)) |
92915f71 GR |
474 | return; |
475 | ||
476 | /* if IP and error */ | |
ec62fe26 ET |
477 | if (ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && |
478 | ixgbevf_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { | |
095e2617 | 479 | ring->rx_stats.csum_err++; |
92915f71 GR |
480 | return; |
481 | } | |
482 | ||
ec62fe26 | 483 | if (!ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) |
92915f71 GR |
484 | return; |
485 | ||
ec62fe26 | 486 | if (ixgbevf_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { |
095e2617 | 487 | ring->rx_stats.csum_err++; |
92915f71 GR |
488 | return; |
489 | } | |
490 | ||
491 | /* It must be a TCP or UDP packet with a valid checksum */ | |
492 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
92915f71 GR |
493 | } |
494 | ||
dec0d8e4 JK |
495 | /** |
496 | * ixgbevf_process_skb_fields - Populate skb header fields from Rx descriptor | |
dff80520 ET |
497 | * @rx_ring: rx descriptor ring packet is being transacted on |
498 | * @rx_desc: pointer to the EOP Rx descriptor | |
499 | * @skb: pointer to current skb being populated | |
500 | * | |
501 | * This function checks the ring, descriptor, and packet information in | |
502 | * order to populate the checksum, VLAN, protocol, and other fields within | |
503 | * the skb. | |
dec0d8e4 | 504 | **/ |
dff80520 ET |
505 | static void ixgbevf_process_skb_fields(struct ixgbevf_ring *rx_ring, |
506 | union ixgbe_adv_rx_desc *rx_desc, | |
507 | struct sk_buff *skb) | |
508 | { | |
1e1429d6 | 509 | ixgbevf_rx_hash(rx_ring, rx_desc, skb); |
dff80520 ET |
510 | ixgbevf_rx_checksum(rx_ring, rx_desc, skb); |
511 | ||
512 | if (ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { | |
513 | u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); | |
514 | unsigned long *active_vlans = netdev_priv(rx_ring->netdev); | |
515 | ||
516 | if (test_bit(vid & VLAN_VID_MASK, active_vlans)) | |
517 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); | |
518 | } | |
519 | ||
7f68d430 SN |
520 | if (ixgbevf_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) |
521 | ixgbevf_ipsec_rx(rx_ring, rx_desc, skb); | |
522 | ||
dff80520 ET |
523 | skb->protocol = eth_type_trans(skb, rx_ring->netdev); |
524 | } | |
525 | ||
925f5690 ET |
526 | static |
527 | struct ixgbevf_rx_buffer *ixgbevf_get_rx_buffer(struct ixgbevf_ring *rx_ring, | |
528 | const unsigned int size) | |
529 | { | |
530 | struct ixgbevf_rx_buffer *rx_buffer; | |
531 | ||
532 | rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; | |
533 | prefetchw(rx_buffer->page); | |
534 | ||
535 | /* we are reusing so sync this buffer for CPU use */ | |
536 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
537 | rx_buffer->dma, | |
538 | rx_buffer->page_offset, | |
539 | size, | |
540 | DMA_FROM_DEVICE); | |
541 | ||
542 | rx_buffer->pagecnt_bias--; | |
543 | ||
544 | return rx_buffer; | |
545 | } | |
546 | ||
547 | static void ixgbevf_put_rx_buffer(struct ixgbevf_ring *rx_ring, | |
c7aec596 TN |
548 | struct ixgbevf_rx_buffer *rx_buffer, |
549 | struct sk_buff *skb) | |
925f5690 ET |
550 | { |
551 | if (ixgbevf_can_reuse_rx_page(rx_buffer)) { | |
552 | /* hand second half of page back to the ring */ | |
553 | ixgbevf_reuse_rx_page(rx_ring, rx_buffer); | |
554 | } else { | |
c7aec596 TN |
555 | if (IS_ERR(skb)) |
556 | /* We are not reusing the buffer so unmap it and free | |
557 | * any references we are holding to it | |
558 | */ | |
559 | dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, | |
560 | ixgbevf_rx_pg_size(rx_ring), | |
561 | DMA_FROM_DEVICE, | |
562 | IXGBEVF_RX_DMA_ATTR); | |
925f5690 ET |
563 | __page_frag_cache_drain(rx_buffer->page, |
564 | rx_buffer->pagecnt_bias); | |
565 | } | |
566 | ||
567 | /* clear contents of rx_buffer */ | |
568 | rx_buffer->page = NULL; | |
569 | } | |
570 | ||
4b95fe3d ET |
571 | /** |
572 | * ixgbevf_is_non_eop - process handling of non-EOP buffers | |
573 | * @rx_ring: Rx ring being processed | |
574 | * @rx_desc: Rx descriptor for current buffer | |
4b95fe3d ET |
575 | * |
576 | * This function updates next to clean. If the buffer is an EOP buffer | |
577 | * this function exits returning false, otherwise it will place the | |
578 | * sk_buff in the next buffer to be chained and return true indicating | |
579 | * that this is in fact a non-EOP buffer. | |
580 | **/ | |
581 | static bool ixgbevf_is_non_eop(struct ixgbevf_ring *rx_ring, | |
bad17234 | 582 | union ixgbe_adv_rx_desc *rx_desc) |
4b95fe3d ET |
583 | { |
584 | u32 ntc = rx_ring->next_to_clean + 1; | |
585 | ||
586 | /* fetch, update, and store next to clean */ | |
587 | ntc = (ntc < rx_ring->count) ? ntc : 0; | |
588 | rx_ring->next_to_clean = ntc; | |
589 | ||
590 | prefetch(IXGBEVF_RX_DESC(rx_ring, ntc)); | |
591 | ||
592 | if (likely(ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) | |
593 | return false; | |
594 | ||
595 | return true; | |
596 | } | |
597 | ||
1ab37e12 ET |
598 | static inline unsigned int ixgbevf_rx_offset(struct ixgbevf_ring *rx_ring) |
599 | { | |
600 | return ring_uses_build_skb(rx_ring) ? IXGBEVF_SKB_PAD : 0; | |
601 | } | |
602 | ||
bad17234 ET |
603 | static bool ixgbevf_alloc_mapped_page(struct ixgbevf_ring *rx_ring, |
604 | struct ixgbevf_rx_buffer *bi) | |
bafa578f | 605 | { |
bad17234 | 606 | struct page *page = bi->page; |
93a6a37c | 607 | dma_addr_t dma; |
bafa578f | 608 | |
bad17234 ET |
609 | /* since we are recycling buffers we should seldom need to alloc */ |
610 | if (likely(page)) | |
bafa578f ET |
611 | return true; |
612 | ||
bad17234 | 613 | /* alloc new page for storage */ |
f15c5ba5 | 614 | page = dev_alloc_pages(ixgbevf_rx_pg_order(rx_ring)); |
bad17234 ET |
615 | if (unlikely(!page)) { |
616 | rx_ring->rx_stats.alloc_rx_page_failed++; | |
bafa578f ET |
617 | return false; |
618 | } | |
619 | ||
bad17234 | 620 | /* map page for use */ |
f15c5ba5 ET |
621 | dma = dma_map_page_attrs(rx_ring->dev, page, 0, |
622 | ixgbevf_rx_pg_size(rx_ring), | |
16b35949 | 623 | DMA_FROM_DEVICE, IXGBEVF_RX_DMA_ATTR); |
bafa578f ET |
624 | |
625 | /* if mapping failed free memory back to system since | |
626 | * there isn't much point in holding memory we can't use | |
627 | */ | |
628 | if (dma_mapping_error(rx_ring->dev, dma)) { | |
f15c5ba5 | 629 | __free_pages(page, ixgbevf_rx_pg_order(rx_ring)); |
bafa578f | 630 | |
2a35efe5 | 631 | rx_ring->rx_stats.alloc_rx_page_failed++; |
bafa578f ET |
632 | return false; |
633 | } | |
634 | ||
bafa578f | 635 | bi->dma = dma; |
bad17234 | 636 | bi->page = page; |
1ab37e12 | 637 | bi->page_offset = ixgbevf_rx_offset(rx_ring); |
35074d69 | 638 | bi->pagecnt_bias = 1; |
2a35efe5 | 639 | rx_ring->rx_stats.alloc_rx_page++; |
bafa578f ET |
640 | |
641 | return true; | |
642 | } | |
643 | ||
92915f71 GR |
644 | /** |
645 | * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split | |
095e2617 | 646 | * @rx_ring: rx descriptor ring (for a specific queue) to setup buffers on |
bafa578f | 647 | * @cleaned_count: number of buffers to replace |
92915f71 | 648 | **/ |
095e2617 | 649 | static void ixgbevf_alloc_rx_buffers(struct ixgbevf_ring *rx_ring, |
bafa578f | 650 | u16 cleaned_count) |
92915f71 | 651 | { |
92915f71 GR |
652 | union ixgbe_adv_rx_desc *rx_desc; |
653 | struct ixgbevf_rx_buffer *bi; | |
fb40195c | 654 | unsigned int i = rx_ring->next_to_use; |
92915f71 | 655 | |
bafa578f ET |
656 | /* nothing to do or no valid netdev defined */ |
657 | if (!cleaned_count || !rx_ring->netdev) | |
658 | return; | |
b9dd245b | 659 | |
bafa578f ET |
660 | rx_desc = IXGBEVF_RX_DESC(rx_ring, i); |
661 | bi = &rx_ring->rx_buffer_info[i]; | |
662 | i -= rx_ring->count; | |
05d063aa | 663 | |
bafa578f | 664 | do { |
bad17234 | 665 | if (!ixgbevf_alloc_mapped_page(rx_ring, bi)) |
bafa578f | 666 | break; |
b9dd245b | 667 | |
16b35949 ET |
668 | /* sync the buffer for use by the device */ |
669 | dma_sync_single_range_for_device(rx_ring->dev, bi->dma, | |
670 | bi->page_offset, | |
f15c5ba5 | 671 | ixgbevf_rx_bufsz(rx_ring), |
16b35949 ET |
672 | DMA_FROM_DEVICE); |
673 | ||
bafa578f ET |
674 | /* Refresh the desc even if pkt_addr didn't change |
675 | * because each write-back erases this info. | |
676 | */ | |
bad17234 | 677 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); |
92915f71 | 678 | |
bafa578f ET |
679 | rx_desc++; |
680 | bi++; | |
92915f71 | 681 | i++; |
bafa578f ET |
682 | if (unlikely(!i)) { |
683 | rx_desc = IXGBEVF_RX_DESC(rx_ring, 0); | |
684 | bi = rx_ring->rx_buffer_info; | |
685 | i -= rx_ring->count; | |
686 | } | |
687 | ||
24bff091 ET |
688 | /* clear the length for the next_to_use descriptor */ |
689 | rx_desc->wb.upper.length = 0; | |
bafa578f ET |
690 | |
691 | cleaned_count--; | |
692 | } while (cleaned_count); | |
693 | ||
694 | i += rx_ring->count; | |
92915f71 | 695 | |
bafa578f ET |
696 | if (rx_ring->next_to_use != i) { |
697 | /* record the next descriptor to use */ | |
698 | rx_ring->next_to_use = i; | |
699 | ||
bad17234 ET |
700 | /* update next to alloc since we have filled the ring */ |
701 | rx_ring->next_to_alloc = i; | |
702 | ||
bafa578f ET |
703 | /* Force memory writes to complete before letting h/w |
704 | * know there are new descriptors to fetch. (Only | |
705 | * applicable for weak-ordered memory model archs, | |
706 | * such as IA-64). | |
707 | */ | |
708 | wmb(); | |
709 | ixgbevf_write_tail(rx_ring, i); | |
710 | } | |
92915f71 GR |
711 | } |
712 | ||
dec0d8e4 JK |
713 | /** |
714 | * ixgbevf_cleanup_headers - Correct corrupted or empty headers | |
bad17234 ET |
715 | * @rx_ring: rx descriptor ring packet is being transacted on |
716 | * @rx_desc: pointer to the EOP Rx descriptor | |
717 | * @skb: pointer to current skb being fixed | |
718 | * | |
719 | * Check for corrupted packet headers caused by senders on the local L2 | |
720 | * embedded NIC switch not setting up their Tx Descriptors right. These | |
721 | * should be very rare. | |
722 | * | |
723 | * Also address the case where we are pulling data in on pages only | |
724 | * and as such no data is present in the skb header. | |
725 | * | |
726 | * In addition if skb is not at least 60 bytes we need to pad it so that | |
727 | * it is large enough to qualify as a valid Ethernet frame. | |
728 | * | |
729 | * Returns true if an error was encountered and skb was freed. | |
dec0d8e4 | 730 | **/ |
bad17234 ET |
731 | static bool ixgbevf_cleanup_headers(struct ixgbevf_ring *rx_ring, |
732 | union ixgbe_adv_rx_desc *rx_desc, | |
733 | struct sk_buff *skb) | |
734 | { | |
c7aec596 TN |
735 | /* XDP packets use error pointer so abort at this point */ |
736 | if (IS_ERR(skb)) | |
737 | return true; | |
738 | ||
bad17234 ET |
739 | /* verify that the packet does not have any known errors */ |
740 | if (unlikely(ixgbevf_test_staterr(rx_desc, | |
741 | IXGBE_RXDADV_ERR_FRAME_ERR_MASK))) { | |
742 | struct net_device *netdev = rx_ring->netdev; | |
743 | ||
744 | if (!(netdev->features & NETIF_F_RXALL)) { | |
745 | dev_kfree_skb_any(skb); | |
746 | return true; | |
747 | } | |
748 | } | |
749 | ||
a94d9e22 AD |
750 | /* if eth_skb_pad returns an error the skb was freed */ |
751 | if (eth_skb_pad(skb)) | |
752 | return true; | |
bad17234 ET |
753 | |
754 | return false; | |
755 | } | |
756 | ||
dec0d8e4 JK |
757 | /** |
758 | * ixgbevf_reuse_rx_page - page flip buffer and store it back on the ring | |
bad17234 ET |
759 | * @rx_ring: rx descriptor ring to store buffers on |
760 | * @old_buff: donor buffer to have page reused | |
761 | * | |
762 | * Synchronizes page for reuse by the adapter | |
dec0d8e4 | 763 | **/ |
bad17234 ET |
764 | static void ixgbevf_reuse_rx_page(struct ixgbevf_ring *rx_ring, |
765 | struct ixgbevf_rx_buffer *old_buff) | |
766 | { | |
767 | struct ixgbevf_rx_buffer *new_buff; | |
768 | u16 nta = rx_ring->next_to_alloc; | |
769 | ||
770 | new_buff = &rx_ring->rx_buffer_info[nta]; | |
771 | ||
772 | /* update, and store next to alloc */ | |
773 | nta++; | |
774 | rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; | |
775 | ||
776 | /* transfer page from old buffer to new buffer */ | |
777 | new_buff->page = old_buff->page; | |
778 | new_buff->dma = old_buff->dma; | |
779 | new_buff->page_offset = old_buff->page_offset; | |
35074d69 | 780 | new_buff->pagecnt_bias = old_buff->pagecnt_bias; |
bad17234 ET |
781 | } |
782 | ||
925f5690 | 783 | static bool ixgbevf_can_reuse_rx_page(struct ixgbevf_rx_buffer *rx_buffer) |
a355fd9a | 784 | { |
925f5690 ET |
785 | unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; |
786 | struct page *page = rx_buffer->page; | |
35074d69 | 787 | |
a79afa78 AL |
788 | /* avoid re-using remote and pfmemalloc pages */ |
789 | if (!dev_page_is_reusable(page)) | |
a355fd9a ET |
790 | return false; |
791 | ||
792 | #if (PAGE_SIZE < 8192) | |
793 | /* if we are only owner of page we can reuse it */ | |
925f5690 | 794 | if (unlikely((page_ref_count(page) - pagecnt_bias) > 1)) |
a355fd9a | 795 | return false; |
a355fd9a | 796 | #else |
f15c5ba5 ET |
797 | #define IXGBEVF_LAST_OFFSET \ |
798 | (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBEVF_RXBUFFER_2048) | |
799 | ||
800 | if (rx_buffer->page_offset > IXGBEVF_LAST_OFFSET) | |
a355fd9a ET |
801 | return false; |
802 | ||
803 | #endif | |
35074d69 ET |
804 | |
805 | /* If we have drained the page fragment pool we need to update | |
806 | * the pagecnt_bias and page count so that we fully restock the | |
807 | * number of references the driver holds. | |
a355fd9a | 808 | */ |
925f5690 | 809 | if (unlikely(!pagecnt_bias)) { |
35074d69 ET |
810 | page_ref_add(page, USHRT_MAX); |
811 | rx_buffer->pagecnt_bias = USHRT_MAX; | |
812 | } | |
a355fd9a ET |
813 | |
814 | return true; | |
815 | } | |
816 | ||
dec0d8e4 JK |
817 | /** |
818 | * ixgbevf_add_rx_frag - Add contents of Rx buffer to sk_buff | |
bad17234 ET |
819 | * @rx_ring: rx descriptor ring to transact packets on |
820 | * @rx_buffer: buffer containing page to add | |
bad17234 | 821 | * @skb: sk_buff to place the data into |
925f5690 | 822 | * @size: size of buffer to be added |
bad17234 ET |
823 | * |
824 | * This function will add the data contained in rx_buffer->page to the skb. | |
dec0d8e4 | 825 | **/ |
925f5690 | 826 | static void ixgbevf_add_rx_frag(struct ixgbevf_ring *rx_ring, |
bad17234 | 827 | struct ixgbevf_rx_buffer *rx_buffer, |
925f5690 ET |
828 | struct sk_buff *skb, |
829 | unsigned int size) | |
bad17234 | 830 | { |
bad17234 | 831 | #if (PAGE_SIZE < 8192) |
f15c5ba5 | 832 | unsigned int truesize = ixgbevf_rx_pg_size(rx_ring) / 2; |
bad17234 | 833 | #else |
1ab37e12 ET |
834 | unsigned int truesize = ring_uses_build_skb(rx_ring) ? |
835 | SKB_DATA_ALIGN(IXGBEVF_SKB_PAD + size) : | |
836 | SKB_DATA_ALIGN(size); | |
bad17234 | 837 | #endif |
925f5690 ET |
838 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, |
839 | rx_buffer->page_offset, size, truesize); | |
840 | #if (PAGE_SIZE < 8192) | |
841 | rx_buffer->page_offset ^= truesize; | |
842 | #else | |
843 | rx_buffer->page_offset += truesize; | |
844 | #endif | |
bad17234 ET |
845 | } |
846 | ||
925f5690 ET |
847 | static |
848 | struct sk_buff *ixgbevf_construct_skb(struct ixgbevf_ring *rx_ring, | |
849 | struct ixgbevf_rx_buffer *rx_buffer, | |
c7aec596 TN |
850 | struct xdp_buff *xdp, |
851 | union ixgbe_adv_rx_desc *rx_desc) | |
bad17234 | 852 | { |
c7aec596 | 853 | unsigned int size = xdp->data_end - xdp->data; |
925f5690 ET |
854 | #if (PAGE_SIZE < 8192) |
855 | unsigned int truesize = ixgbevf_rx_pg_size(rx_ring) / 2; | |
856 | #else | |
c7aec596 TN |
857 | unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - |
858 | xdp->data_hard_start); | |
925f5690 ET |
859 | #endif |
860 | unsigned int headlen; | |
861 | struct sk_buff *skb; | |
bad17234 | 862 | |
925f5690 | 863 | /* prefetch first cache line of first page */ |
f468f21b TT |
864 | net_prefetch(xdp->data); |
865 | ||
be833332 TN |
866 | /* Note, we get here by enabling legacy-rx via: |
867 | * | |
868 | * ethtool --set-priv-flags <dev> legacy-rx on | |
869 | * | |
870 | * In this mode, we currently get 0 extra XDP headroom as | |
871 | * opposed to having legacy-rx off, where we process XDP | |
872 | * packets going to stack via ixgbevf_build_skb(). | |
873 | * | |
874 | * For ixgbevf_construct_skb() mode it means that the | |
875 | * xdp->data_meta will always point to xdp->data, since | |
876 | * the helper cannot expand the head. Should this ever | |
877 | * changed in future for legacy-rx mode on, then lets also | |
878 | * add xdp->data_meta handling here. | |
879 | */ | |
bad17234 | 880 | |
925f5690 ET |
881 | /* allocate a skb to store the frags */ |
882 | skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBEVF_RX_HDR_SIZE); | |
883 | if (unlikely(!skb)) | |
884 | return NULL; | |
bad17234 | 885 | |
925f5690 ET |
886 | /* Determine available headroom for copy */ |
887 | headlen = size; | |
888 | if (headlen > IXGBEVF_RX_HDR_SIZE) | |
c43f1255 SF |
889 | headlen = eth_get_headlen(skb->dev, xdp->data, |
890 | IXGBEVF_RX_HDR_SIZE); | |
bad17234 | 891 | |
925f5690 | 892 | /* align pull length to size of long to optimize memcpy performance */ |
c7aec596 TN |
893 | memcpy(__skb_put(skb, headlen), xdp->data, |
894 | ALIGN(headlen, sizeof(long))); | |
925f5690 ET |
895 | |
896 | /* update all of the pointers */ | |
897 | size -= headlen; | |
898 | if (size) { | |
899 | skb_add_rx_frag(skb, 0, rx_buffer->page, | |
c7aec596 TN |
900 | (xdp->data + headlen) - |
901 | page_address(rx_buffer->page), | |
925f5690 ET |
902 | size, truesize); |
903 | #if (PAGE_SIZE < 8192) | |
904 | rx_buffer->page_offset ^= truesize; | |
905 | #else | |
906 | rx_buffer->page_offset += truesize; | |
907 | #endif | |
bad17234 | 908 | } else { |
925f5690 | 909 | rx_buffer->pagecnt_bias++; |
bad17234 ET |
910 | } |
911 | ||
bad17234 ET |
912 | return skb; |
913 | } | |
914 | ||
92915f71 | 915 | static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter, |
5f3600eb | 916 | u32 qmask) |
92915f71 | 917 | { |
92915f71 GR |
918 | struct ixgbe_hw *hw = &adapter->hw; |
919 | ||
5f3600eb | 920 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, qmask); |
92915f71 GR |
921 | } |
922 | ||
6d9c0217 ET |
923 | static struct sk_buff *ixgbevf_build_skb(struct ixgbevf_ring *rx_ring, |
924 | struct ixgbevf_rx_buffer *rx_buffer, | |
c7aec596 TN |
925 | struct xdp_buff *xdp, |
926 | union ixgbe_adv_rx_desc *rx_desc) | |
6d9c0217 | 927 | { |
be833332 | 928 | unsigned int metasize = xdp->data - xdp->data_meta; |
6d9c0217 ET |
929 | #if (PAGE_SIZE < 8192) |
930 | unsigned int truesize = ixgbevf_rx_pg_size(rx_ring) / 2; | |
931 | #else | |
932 | unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + | |
c7aec596 TN |
933 | SKB_DATA_ALIGN(xdp->data_end - |
934 | xdp->data_hard_start); | |
6d9c0217 ET |
935 | #endif |
936 | struct sk_buff *skb; | |
937 | ||
be833332 TN |
938 | /* Prefetch first cache line of first page. If xdp->data_meta |
939 | * is unused, this points to xdp->data, otherwise, we likely | |
940 | * have a consumer accessing first few bytes of meta data, | |
941 | * and then actual data. | |
942 | */ | |
f468f21b | 943 | net_prefetch(xdp->data_meta); |
6d9c0217 | 944 | |
c7aec596 | 945 | /* build an skb around the page buffer */ |
c1550019 | 946 | skb = napi_build_skb(xdp->data_hard_start, truesize); |
6d9c0217 ET |
947 | if (unlikely(!skb)) |
948 | return NULL; | |
949 | ||
950 | /* update pointers within the skb to store the data */ | |
c7aec596 TN |
951 | skb_reserve(skb, xdp->data - xdp->data_hard_start); |
952 | __skb_put(skb, xdp->data_end - xdp->data); | |
be833332 TN |
953 | if (metasize) |
954 | skb_metadata_set(skb, metasize); | |
6d9c0217 ET |
955 | |
956 | /* update buffer offset */ | |
957 | #if (PAGE_SIZE < 8192) | |
958 | rx_buffer->page_offset ^= truesize; | |
959 | #else | |
960 | rx_buffer->page_offset += truesize; | |
961 | #endif | |
962 | ||
963 | return skb; | |
964 | } | |
c7aec596 TN |
965 | |
966 | #define IXGBEVF_XDP_PASS 0 | |
967 | #define IXGBEVF_XDP_CONSUMED 1 | |
21092e9c TN |
968 | #define IXGBEVF_XDP_TX 2 |
969 | ||
970 | static int ixgbevf_xmit_xdp_ring(struct ixgbevf_ring *ring, | |
971 | struct xdp_buff *xdp) | |
972 | { | |
973 | struct ixgbevf_tx_buffer *tx_buffer; | |
974 | union ixgbe_adv_tx_desc *tx_desc; | |
975 | u32 len, cmd_type; | |
976 | dma_addr_t dma; | |
977 | u16 i; | |
978 | ||
979 | len = xdp->data_end - xdp->data; | |
c7aec596 | 980 | |
21092e9c TN |
981 | if (unlikely(!ixgbevf_desc_unused(ring))) |
982 | return IXGBEVF_XDP_CONSUMED; | |
983 | ||
984 | dma = dma_map_single(ring->dev, xdp->data, len, DMA_TO_DEVICE); | |
985 | if (dma_mapping_error(ring->dev, dma)) | |
986 | return IXGBEVF_XDP_CONSUMED; | |
987 | ||
988 | /* record the location of the first descriptor for this packet */ | |
21092e9c | 989 | i = ring->next_to_use; |
4be87727 | 990 | tx_buffer = &ring->tx_buffer_info[i]; |
21092e9c TN |
991 | |
992 | dma_unmap_len_set(tx_buffer, len, len); | |
993 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
994 | tx_buffer->data = xdp->data; | |
4be87727 AD |
995 | tx_buffer->bytecount = len; |
996 | tx_buffer->gso_segs = 1; | |
997 | tx_buffer->protocol = 0; | |
998 | ||
999 | /* Populate minimal context descriptor that will provide for the | |
1000 | * fact that we are expected to process Ethernet frames. | |
1001 | */ | |
1002 | if (!test_bit(__IXGBEVF_TX_XDP_RING_PRIMED, &ring->state)) { | |
1003 | struct ixgbe_adv_tx_context_desc *context_desc; | |
1004 | ||
1005 | set_bit(__IXGBEVF_TX_XDP_RING_PRIMED, &ring->state); | |
1006 | ||
1007 | context_desc = IXGBEVF_TX_CTXTDESC(ring, 0); | |
1008 | context_desc->vlan_macip_lens = | |
1009 | cpu_to_le32(ETH_HLEN << IXGBE_ADVTXD_MACLEN_SHIFT); | |
7f68d430 | 1010 | context_desc->fceof_saidx = 0; |
4be87727 AD |
1011 | context_desc->type_tucmd_mlhl = |
1012 | cpu_to_le32(IXGBE_TXD_CMD_DEXT | | |
1013 | IXGBE_ADVTXD_DTYP_CTXT); | |
1014 | context_desc->mss_l4len_idx = 0; | |
1015 | ||
1016 | i = 1; | |
1017 | } | |
21092e9c TN |
1018 | |
1019 | /* put descriptor type bits */ | |
1020 | cmd_type = IXGBE_ADVTXD_DTYP_DATA | | |
1021 | IXGBE_ADVTXD_DCMD_DEXT | | |
1022 | IXGBE_ADVTXD_DCMD_IFCS; | |
1023 | cmd_type |= len | IXGBE_TXD_CMD; | |
4be87727 AD |
1024 | |
1025 | tx_desc = IXGBEVF_TX_DESC(ring, i); | |
1026 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
1027 | ||
21092e9c TN |
1028 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); |
1029 | tx_desc->read.olinfo_status = | |
1030 | cpu_to_le32((len << IXGBE_ADVTXD_PAYLEN_SHIFT) | | |
1031 | IXGBE_ADVTXD_CC); | |
1032 | ||
efecfd5f TN |
1033 | /* Avoid any potential race with cleanup */ |
1034 | smp_wmb(); | |
21092e9c TN |
1035 | |
1036 | /* set next_to_watch value indicating a packet is present */ | |
1037 | i++; | |
1038 | if (i == ring->count) | |
1039 | i = 0; | |
1040 | ||
1041 | tx_buffer->next_to_watch = tx_desc; | |
1042 | ring->next_to_use = i; | |
1043 | ||
21092e9c TN |
1044 | return IXGBEVF_XDP_TX; |
1045 | } | |
1046 | ||
1047 | static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter, | |
1048 | struct ixgbevf_ring *rx_ring, | |
c7aec596 TN |
1049 | struct xdp_buff *xdp) |
1050 | { | |
1051 | int result = IXGBEVF_XDP_PASS; | |
21092e9c | 1052 | struct ixgbevf_ring *xdp_ring; |
c7aec596 TN |
1053 | struct bpf_prog *xdp_prog; |
1054 | u32 act; | |
1055 | ||
c7aec596 TN |
1056 | xdp_prog = READ_ONCE(rx_ring->xdp_prog); |
1057 | ||
1058 | if (!xdp_prog) | |
1059 | goto xdp_out; | |
1060 | ||
1061 | act = bpf_prog_run_xdp(xdp_prog, xdp); | |
1062 | switch (act) { | |
1063 | case XDP_PASS: | |
1064 | break; | |
21092e9c TN |
1065 | case XDP_TX: |
1066 | xdp_ring = adapter->xdp_ring[rx_ring->queue_index]; | |
1067 | result = ixgbevf_xmit_xdp_ring(xdp_ring, xdp); | |
faae8142 MK |
1068 | if (result == IXGBEVF_XDP_CONSUMED) |
1069 | goto out_failure; | |
21092e9c | 1070 | break; |
c7aec596 | 1071 | default: |
c8064e5b | 1072 | bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act); |
5463fce6 | 1073 | fallthrough; |
c7aec596 | 1074 | case XDP_ABORTED: |
faae8142 | 1075 | out_failure: |
c7aec596 | 1076 | trace_xdp_exception(rx_ring->netdev, xdp_prog, act); |
5463fce6 | 1077 | fallthrough; /* handle aborts by dropping packet */ |
c7aec596 TN |
1078 | case XDP_DROP: |
1079 | result = IXGBEVF_XDP_CONSUMED; | |
1080 | break; | |
1081 | } | |
1082 | xdp_out: | |
c7aec596 TN |
1083 | return ERR_PTR(-result); |
1084 | } | |
1085 | ||
81f3c628 JDB |
1086 | static unsigned int ixgbevf_rx_frame_truesize(struct ixgbevf_ring *rx_ring, |
1087 | unsigned int size) | |
1088 | { | |
1089 | unsigned int truesize; | |
1090 | ||
1091 | #if (PAGE_SIZE < 8192) | |
1092 | truesize = ixgbevf_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ | |
1093 | #else | |
1094 | truesize = ring_uses_build_skb(rx_ring) ? | |
1095 | SKB_DATA_ALIGN(IXGBEVF_SKB_PAD + size) + | |
1096 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : | |
1097 | SKB_DATA_ALIGN(size); | |
1098 | #endif | |
1099 | return truesize; | |
1100 | } | |
1101 | ||
21092e9c TN |
1102 | static void ixgbevf_rx_buffer_flip(struct ixgbevf_ring *rx_ring, |
1103 | struct ixgbevf_rx_buffer *rx_buffer, | |
1104 | unsigned int size) | |
1105 | { | |
81f3c628 | 1106 | unsigned int truesize = ixgbevf_rx_frame_truesize(rx_ring, size); |
21092e9c | 1107 | |
81f3c628 | 1108 | #if (PAGE_SIZE < 8192) |
21092e9c TN |
1109 | rx_buffer->page_offset ^= truesize; |
1110 | #else | |
21092e9c TN |
1111 | rx_buffer->page_offset += truesize; |
1112 | #endif | |
1113 | } | |
1114 | ||
08e50a20 JK |
1115 | static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, |
1116 | struct ixgbevf_ring *rx_ring, | |
1117 | int budget) | |
92915f71 | 1118 | { |
43b5169d | 1119 | unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0; |
21092e9c | 1120 | struct ixgbevf_adapter *adapter = q_vector->adapter; |
bafa578f | 1121 | u16 cleaned_count = ixgbevf_desc_unused(rx_ring); |
bad17234 | 1122 | struct sk_buff *skb = rx_ring->skb; |
efecfd5f | 1123 | bool xdp_xmit = false; |
c7aec596 TN |
1124 | struct xdp_buff xdp; |
1125 | ||
81f3c628 JDB |
1126 | /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ |
1127 | #if (PAGE_SIZE < 8192) | |
43b5169d | 1128 | frame_sz = ixgbevf_rx_frame_truesize(rx_ring, 0); |
81f3c628 | 1129 | #endif |
43b5169d | 1130 | xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); |
81f3c628 | 1131 | |
6622402a | 1132 | while (likely(total_rx_packets < budget)) { |
925f5690 | 1133 | struct ixgbevf_rx_buffer *rx_buffer; |
c7aec596 | 1134 | union ixgbe_adv_rx_desc *rx_desc; |
925f5690 | 1135 | unsigned int size; |
b97fe3b1 | 1136 | |
0579eefc ET |
1137 | /* return some buffers to hardware, one at a time is too slow */ |
1138 | if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) { | |
1139 | ixgbevf_alloc_rx_buffers(rx_ring, cleaned_count); | |
1140 | cleaned_count = 0; | |
1141 | } | |
1142 | ||
bad17234 | 1143 | rx_desc = IXGBEVF_RX_DESC(rx_ring, rx_ring->next_to_clean); |
925f5690 ET |
1144 | size = le16_to_cpu(rx_desc->wb.upper.length); |
1145 | if (!size) | |
92915f71 | 1146 | break; |
92915f71 | 1147 | |
0579eefc ET |
1148 | /* This memory barrier is needed to keep us from reading |
1149 | * any other fields out of the rx_desc until we know the | |
1150 | * RXD_STAT_DD bit is set | |
1151 | */ | |
1152 | rmb(); | |
ec62fe26 | 1153 | |
925f5690 ET |
1154 | rx_buffer = ixgbevf_get_rx_buffer(rx_ring, size); |
1155 | ||
bad17234 | 1156 | /* retrieve a buffer from the ring */ |
c7aec596 | 1157 | if (!skb) { |
be9df4af LB |
1158 | unsigned int offset = ixgbevf_rx_offset(rx_ring); |
1159 | unsigned char *hard_start; | |
1160 | ||
1161 | hard_start = page_address(rx_buffer->page) + | |
1162 | rx_buffer->page_offset - offset; | |
1163 | xdp_prepare_buff(&xdp, hard_start, offset, size, true); | |
81f3c628 JDB |
1164 | #if (PAGE_SIZE > 4096) |
1165 | /* At larger PAGE_SIZE, frame_sz depend on len size */ | |
1166 | xdp.frame_sz = ixgbevf_rx_frame_truesize(rx_ring, size); | |
1167 | #endif | |
21092e9c | 1168 | skb = ixgbevf_run_xdp(adapter, rx_ring, &xdp); |
c7aec596 TN |
1169 | } |
1170 | ||
1171 | if (IS_ERR(skb)) { | |
efecfd5f TN |
1172 | if (PTR_ERR(skb) == -IXGBEVF_XDP_TX) { |
1173 | xdp_xmit = true; | |
21092e9c TN |
1174 | ixgbevf_rx_buffer_flip(rx_ring, rx_buffer, |
1175 | size); | |
efecfd5f | 1176 | } else { |
21092e9c | 1177 | rx_buffer->pagecnt_bias++; |
efecfd5f | 1178 | } |
c7aec596 TN |
1179 | total_rx_packets++; |
1180 | total_rx_bytes += size; | |
c7aec596 | 1181 | } else if (skb) { |
925f5690 | 1182 | ixgbevf_add_rx_frag(rx_ring, rx_buffer, skb, size); |
c7aec596 | 1183 | } else if (ring_uses_build_skb(rx_ring)) { |
6d9c0217 | 1184 | skb = ixgbevf_build_skb(rx_ring, rx_buffer, |
c7aec596 TN |
1185 | &xdp, rx_desc); |
1186 | } else { | |
925f5690 | 1187 | skb = ixgbevf_construct_skb(rx_ring, rx_buffer, |
c7aec596 TN |
1188 | &xdp, rx_desc); |
1189 | } | |
0579eefc | 1190 | |
bad17234 | 1191 | /* exit if we failed to retrieve a buffer */ |
2a35efe5 ET |
1192 | if (!skb) { |
1193 | rx_ring->rx_stats.alloc_rx_buff_failed++; | |
925f5690 | 1194 | rx_buffer->pagecnt_bias++; |
bad17234 | 1195 | break; |
2a35efe5 | 1196 | } |
92915f71 | 1197 | |
c7aec596 | 1198 | ixgbevf_put_rx_buffer(rx_ring, rx_buffer, skb); |
b97fe3b1 ET |
1199 | cleaned_count++; |
1200 | ||
bad17234 ET |
1201 | /* fetch next buffer in frame if non-eop */ |
1202 | if (ixgbevf_is_non_eop(rx_ring, rx_desc)) | |
0579eefc | 1203 | continue; |
5c60f81a | 1204 | |
bad17234 ET |
1205 | /* verify the packet layout is correct */ |
1206 | if (ixgbevf_cleanup_headers(rx_ring, rx_desc, skb)) { | |
1207 | skb = NULL; | |
0579eefc | 1208 | continue; |
92915f71 GR |
1209 | } |
1210 | ||
92915f71 GR |
1211 | /* probably a little skewed due to removing CRC */ |
1212 | total_rx_bytes += skb->len; | |
92915f71 | 1213 | |
815cccbf JF |
1214 | /* Workaround hardware that can't do proper VEPA multicast |
1215 | * source pruning. | |
1216 | */ | |
bd9d5592 | 1217 | if ((skb->pkt_type == PACKET_BROADCAST || |
dec0d8e4 | 1218 | skb->pkt_type == PACKET_MULTICAST) && |
095e2617 | 1219 | ether_addr_equal(rx_ring->netdev->dev_addr, |
7367d0b5 | 1220 | eth_hdr(skb)->h_source)) { |
815cccbf | 1221 | dev_kfree_skb_irq(skb); |
0579eefc | 1222 | continue; |
815cccbf JF |
1223 | } |
1224 | ||
dff80520 ET |
1225 | /* populate checksum, VLAN, and protocol */ |
1226 | ixgbevf_process_skb_fields(rx_ring, rx_desc, skb); | |
1227 | ||
1228 | ixgbevf_rx_skb(q_vector, skb); | |
92915f71 | 1229 | |
bad17234 ET |
1230 | /* reset skb pointer */ |
1231 | skb = NULL; | |
1232 | ||
0579eefc | 1233 | /* update budget accounting */ |
6622402a ET |
1234 | total_rx_packets++; |
1235 | } | |
92915f71 | 1236 | |
bad17234 ET |
1237 | /* place incomplete frames back on ring for completion */ |
1238 | rx_ring->skb = skb; | |
1239 | ||
efecfd5f TN |
1240 | if (xdp_xmit) { |
1241 | struct ixgbevf_ring *xdp_ring = | |
1242 | adapter->xdp_ring[rx_ring->queue_index]; | |
1243 | ||
1244 | /* Force memory writes to complete before letting h/w | |
1245 | * know there are new descriptors to fetch. | |
1246 | */ | |
1247 | wmb(); | |
1248 | ixgbevf_write_tail(xdp_ring, xdp_ring->next_to_use); | |
1249 | } | |
1250 | ||
4197aa7b | 1251 | u64_stats_update_begin(&rx_ring->syncp); |
095e2617 ET |
1252 | rx_ring->stats.packets += total_rx_packets; |
1253 | rx_ring->stats.bytes += total_rx_bytes; | |
4197aa7b | 1254 | u64_stats_update_end(&rx_ring->syncp); |
ac6ed8f0 GR |
1255 | q_vector->rx.total_packets += total_rx_packets; |
1256 | q_vector->rx.total_bytes += total_rx_bytes; | |
92915f71 | 1257 | |
08e50a20 | 1258 | return total_rx_packets; |
92915f71 GR |
1259 | } |
1260 | ||
1261 | /** | |
fa71ae27 | 1262 | * ixgbevf_poll - NAPI polling calback |
92915f71 GR |
1263 | * @napi: napi struct with our devices info in it |
1264 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1265 | * | |
fa71ae27 | 1266 | * This function will clean more than one or more rings associated with a |
92915f71 GR |
1267 | * q_vector. |
1268 | **/ | |
fa71ae27 | 1269 | static int ixgbevf_poll(struct napi_struct *napi, int budget) |
92915f71 GR |
1270 | { |
1271 | struct ixgbevf_q_vector *q_vector = | |
1272 | container_of(napi, struct ixgbevf_q_vector, napi); | |
1273 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
fa71ae27 | 1274 | struct ixgbevf_ring *ring; |
32b3e08f | 1275 | int per_ring_budget, work_done = 0; |
fa71ae27 AD |
1276 | bool clean_complete = true; |
1277 | ||
8220bbc1 AD |
1278 | ixgbevf_for_each_ring(ring, q_vector->tx) { |
1279 | if (!ixgbevf_clean_tx_irq(q_vector, ring, budget)) | |
1280 | clean_complete = false; | |
1281 | } | |
92915f71 | 1282 | |
d0f71aff WD |
1283 | if (budget <= 0) |
1284 | return budget; | |
c777cdfa | 1285 | |
92915f71 | 1286 | /* attempt to distribute budget to each queue fairly, but don't allow |
dec0d8e4 JK |
1287 | * the budget to go below 1 because we'll exit polling |
1288 | */ | |
fa71ae27 AD |
1289 | if (q_vector->rx.count > 1) |
1290 | per_ring_budget = max(budget/q_vector->rx.count, 1); | |
1291 | else | |
1292 | per_ring_budget = budget; | |
1293 | ||
32b3e08f JB |
1294 | ixgbevf_for_each_ring(ring, q_vector->rx) { |
1295 | int cleaned = ixgbevf_clean_rx_irq(q_vector, ring, | |
1296 | per_ring_budget); | |
1297 | work_done += cleaned; | |
8220bbc1 AD |
1298 | if (cleaned >= per_ring_budget) |
1299 | clean_complete = false; | |
32b3e08f | 1300 | } |
fa71ae27 AD |
1301 | |
1302 | /* If all work not completed, return budget and keep polling */ | |
1303 | if (!clean_complete) | |
1304 | return budget; | |
92915f71 | 1305 | |
0bcd952f JB |
1306 | /* Exit the polling mode, but don't re-enable interrupts if stack might |
1307 | * poll us due to busy-polling | |
1308 | */ | |
1309 | if (likely(napi_complete_done(napi, work_done))) { | |
1310 | if (adapter->rx_itr_setting == 1) | |
1311 | ixgbevf_set_itr(q_vector); | |
1312 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state) && | |
1313 | !test_bit(__IXGBEVF_REMOVING, &adapter->state)) | |
1314 | ixgbevf_irq_enable_queues(adapter, | |
1315 | BIT(q_vector->v_idx)); | |
1316 | } | |
1317 | ||
1318 | return min(work_done, budget - 1); | |
92915f71 GR |
1319 | } |
1320 | ||
ce422606 GR |
1321 | /** |
1322 | * ixgbevf_write_eitr - write VTEITR register in hardware specific way | |
1323 | * @q_vector: structure containing interrupt and ring information | |
dec0d8e4 | 1324 | **/ |
3849623e | 1325 | void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector) |
ce422606 GR |
1326 | { |
1327 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
1328 | struct ixgbe_hw *hw = &adapter->hw; | |
1329 | int v_idx = q_vector->v_idx; | |
1330 | u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; | |
1331 | ||
dec0d8e4 | 1332 | /* set the WDIS bit to not clear the timer bits and cause an |
ce422606 GR |
1333 | * immediate assertion of the interrupt |
1334 | */ | |
1335 | itr_reg |= IXGBE_EITR_CNT_WDIS; | |
1336 | ||
1337 | IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg); | |
1338 | } | |
92915f71 GR |
1339 | |
1340 | /** | |
1341 | * ixgbevf_configure_msix - Configure MSI-X hardware | |
1342 | * @adapter: board private structure | |
1343 | * | |
1344 | * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X | |
1345 | * interrupts. | |
1346 | **/ | |
1347 | static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter) | |
1348 | { | |
1349 | struct ixgbevf_q_vector *q_vector; | |
6b43c446 | 1350 | int q_vectors, v_idx; |
92915f71 GR |
1351 | |
1352 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
5f3600eb | 1353 | adapter->eims_enable_mask = 0; |
92915f71 | 1354 | |
dec0d8e4 | 1355 | /* Populate the IVAR table and set the ITR values to the |
92915f71 GR |
1356 | * corresponding register. |
1357 | */ | |
1358 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
6b43c446 | 1359 | struct ixgbevf_ring *ring; |
dec0d8e4 | 1360 | |
92915f71 | 1361 | q_vector = adapter->q_vector[v_idx]; |
6b43c446 AD |
1362 | |
1363 | ixgbevf_for_each_ring(ring, q_vector->rx) | |
1364 | ixgbevf_set_ivar(adapter, 0, ring->reg_idx, v_idx); | |
1365 | ||
1366 | ixgbevf_for_each_ring(ring, q_vector->tx) | |
1367 | ixgbevf_set_ivar(adapter, 1, ring->reg_idx, v_idx); | |
92915f71 | 1368 | |
5f3600eb | 1369 | if (q_vector->tx.ring && !q_vector->rx.ring) { |
dec0d8e4 | 1370 | /* Tx only vector */ |
5f3600eb | 1371 | if (adapter->tx_itr_setting == 1) |
8a9ca110 | 1372 | q_vector->itr = IXGBE_12K_ITR; |
5f3600eb AD |
1373 | else |
1374 | q_vector->itr = adapter->tx_itr_setting; | |
1375 | } else { | |
dec0d8e4 | 1376 | /* Rx or Rx/Tx vector */ |
5f3600eb AD |
1377 | if (adapter->rx_itr_setting == 1) |
1378 | q_vector->itr = IXGBE_20K_ITR; | |
1379 | else | |
1380 | q_vector->itr = adapter->rx_itr_setting; | |
1381 | } | |
1382 | ||
1383 | /* add q_vector eims value to global eims_enable_mask */ | |
8d055cc0 | 1384 | adapter->eims_enable_mask |= BIT(v_idx); |
92915f71 | 1385 | |
5f3600eb | 1386 | ixgbevf_write_eitr(q_vector); |
92915f71 GR |
1387 | } |
1388 | ||
1389 | ixgbevf_set_ivar(adapter, -1, 1, v_idx); | |
5f3600eb | 1390 | /* setup eims_other and add value to global eims_enable_mask */ |
8d055cc0 | 1391 | adapter->eims_other = BIT(v_idx); |
5f3600eb | 1392 | adapter->eims_enable_mask |= adapter->eims_other; |
92915f71 GR |
1393 | } |
1394 | ||
1395 | enum latency_range { | |
1396 | lowest_latency = 0, | |
1397 | low_latency = 1, | |
1398 | bulk_latency = 2, | |
1399 | latency_invalid = 255 | |
1400 | }; | |
1401 | ||
1402 | /** | |
1403 | * ixgbevf_update_itr - update the dynamic ITR value based on statistics | |
5f3600eb AD |
1404 | * @q_vector: structure containing interrupt and ring information |
1405 | * @ring_container: structure containing ring performance data | |
92915f71 | 1406 | * |
dec0d8e4 JK |
1407 | * Stores a new ITR value based on packets and byte |
1408 | * counts during the last interrupt. The advantage of per interrupt | |
1409 | * computation is faster updates and more accurate ITR for the current | |
1410 | * traffic pattern. Constants in this function were computed | |
1411 | * based on theoretical maximum wire speed and thresholds were set based | |
1412 | * on testing data as well as attempting to minimize response time | |
1413 | * while increasing bulk throughput. | |
92915f71 | 1414 | **/ |
5f3600eb AD |
1415 | static void ixgbevf_update_itr(struct ixgbevf_q_vector *q_vector, |
1416 | struct ixgbevf_ring_container *ring_container) | |
92915f71 | 1417 | { |
5f3600eb AD |
1418 | int bytes = ring_container->total_bytes; |
1419 | int packets = ring_container->total_packets; | |
92915f71 GR |
1420 | u32 timepassed_us; |
1421 | u64 bytes_perint; | |
5f3600eb | 1422 | u8 itr_setting = ring_container->itr; |
92915f71 GR |
1423 | |
1424 | if (packets == 0) | |
5f3600eb | 1425 | return; |
92915f71 | 1426 | |
dec0d8e4 | 1427 | /* simple throttle rate management |
92915f71 GR |
1428 | * 0-20MB/s lowest (100000 ints/s) |
1429 | * 20-100MB/s low (20000 ints/s) | |
8a9ca110 | 1430 | * 100-1249MB/s bulk (12000 ints/s) |
92915f71 GR |
1431 | */ |
1432 | /* what was last interrupt timeslice? */ | |
5f3600eb | 1433 | timepassed_us = q_vector->itr >> 2; |
e0f0be7d YX |
1434 | if (timepassed_us == 0) |
1435 | return; | |
1436 | ||
92915f71 GR |
1437 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ |
1438 | ||
1439 | switch (itr_setting) { | |
1440 | case lowest_latency: | |
e2c28ce7 | 1441 | if (bytes_perint > 10) |
5f3600eb | 1442 | itr_setting = low_latency; |
92915f71 GR |
1443 | break; |
1444 | case low_latency: | |
e2c28ce7 | 1445 | if (bytes_perint > 20) |
5f3600eb | 1446 | itr_setting = bulk_latency; |
e2c28ce7 | 1447 | else if (bytes_perint <= 10) |
5f3600eb | 1448 | itr_setting = lowest_latency; |
92915f71 GR |
1449 | break; |
1450 | case bulk_latency: | |
e2c28ce7 | 1451 | if (bytes_perint <= 20) |
5f3600eb | 1452 | itr_setting = low_latency; |
92915f71 GR |
1453 | break; |
1454 | } | |
1455 | ||
5f3600eb AD |
1456 | /* clear work counters since we have the values we need */ |
1457 | ring_container->total_bytes = 0; | |
1458 | ring_container->total_packets = 0; | |
1459 | ||
1460 | /* write updated itr to ring container */ | |
1461 | ring_container->itr = itr_setting; | |
92915f71 GR |
1462 | } |
1463 | ||
fa71ae27 | 1464 | static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector) |
92915f71 | 1465 | { |
5f3600eb AD |
1466 | u32 new_itr = q_vector->itr; |
1467 | u8 current_itr; | |
92915f71 | 1468 | |
5f3600eb AD |
1469 | ixgbevf_update_itr(q_vector, &q_vector->tx); |
1470 | ixgbevf_update_itr(q_vector, &q_vector->rx); | |
92915f71 | 1471 | |
6b43c446 | 1472 | current_itr = max(q_vector->rx.itr, q_vector->tx.itr); |
92915f71 GR |
1473 | |
1474 | switch (current_itr) { | |
1475 | /* counts and packets in update_itr are dependent on these numbers */ | |
1476 | case lowest_latency: | |
5f3600eb | 1477 | new_itr = IXGBE_100K_ITR; |
92915f71 GR |
1478 | break; |
1479 | case low_latency: | |
5f3600eb | 1480 | new_itr = IXGBE_20K_ITR; |
92915f71 GR |
1481 | break; |
1482 | case bulk_latency: | |
8a9ca110 | 1483 | new_itr = IXGBE_12K_ITR; |
92915f71 | 1484 | break; |
9ad3d6f7 ET |
1485 | default: |
1486 | break; | |
92915f71 GR |
1487 | } |
1488 | ||
5f3600eb | 1489 | if (new_itr != q_vector->itr) { |
92915f71 | 1490 | /* do an exponential smoothing */ |
5f3600eb AD |
1491 | new_itr = (10 * new_itr * q_vector->itr) / |
1492 | ((9 * new_itr) + q_vector->itr); | |
1493 | ||
1494 | /* save the algorithm value here */ | |
1495 | q_vector->itr = new_itr; | |
1496 | ||
1497 | ixgbevf_write_eitr(q_vector); | |
92915f71 | 1498 | } |
92915f71 GR |
1499 | } |
1500 | ||
4b2cd27f | 1501 | static irqreturn_t ixgbevf_msix_other(int irq, void *data) |
92915f71 | 1502 | { |
fa71ae27 | 1503 | struct ixgbevf_adapter *adapter = data; |
92915f71 | 1504 | struct ixgbe_hw *hw = &adapter->hw; |
08259594 | 1505 | |
4b2cd27f | 1506 | hw->mac.get_link_status = 1; |
1e72bfc3 | 1507 | |
9ac5c5cc | 1508 | ixgbevf_service_event_schedule(adapter); |
3a2c4033 | 1509 | |
5f3600eb AD |
1510 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, adapter->eims_other); |
1511 | ||
92915f71 GR |
1512 | return IRQ_HANDLED; |
1513 | } | |
1514 | ||
92915f71 | 1515 | /** |
fa71ae27 | 1516 | * ixgbevf_msix_clean_rings - single unshared vector rx clean (all queues) |
92915f71 GR |
1517 | * @irq: unused |
1518 | * @data: pointer to our q_vector struct for this interrupt vector | |
1519 | **/ | |
fa71ae27 | 1520 | static irqreturn_t ixgbevf_msix_clean_rings(int irq, void *data) |
92915f71 GR |
1521 | { |
1522 | struct ixgbevf_q_vector *q_vector = data; | |
92915f71 | 1523 | |
5f3600eb | 1524 | /* EIAM disabled interrupts (on this vector) for us */ |
fa71ae27 | 1525 | if (q_vector->rx.ring || q_vector->tx.ring) |
ef2662b2 | 1526 | napi_schedule_irqoff(&q_vector->napi); |
92915f71 GR |
1527 | |
1528 | return IRQ_HANDLED; | |
1529 | } | |
1530 | ||
92915f71 GR |
1531 | /** |
1532 | * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts | |
1533 | * @adapter: board private structure | |
1534 | * | |
1535 | * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests | |
1536 | * interrupts from the kernel. | |
1537 | **/ | |
1538 | static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter) | |
1539 | { | |
1540 | struct net_device *netdev = adapter->netdev; | |
fa71ae27 | 1541 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
31f5d9b1 | 1542 | unsigned int ri = 0, ti = 0; |
fa71ae27 | 1543 | int vector, err; |
92915f71 | 1544 | |
92915f71 | 1545 | for (vector = 0; vector < q_vectors; vector++) { |
fa71ae27 AD |
1546 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[vector]; |
1547 | struct msix_entry *entry = &adapter->msix_entries[vector]; | |
1548 | ||
1549 | if (q_vector->tx.ring && q_vector->rx.ring) { | |
31f5d9b1 TN |
1550 | snprintf(q_vector->name, sizeof(q_vector->name), |
1551 | "%s-TxRx-%u", netdev->name, ri++); | |
fa71ae27 AD |
1552 | ti++; |
1553 | } else if (q_vector->rx.ring) { | |
31f5d9b1 TN |
1554 | snprintf(q_vector->name, sizeof(q_vector->name), |
1555 | "%s-rx-%u", netdev->name, ri++); | |
fa71ae27 | 1556 | } else if (q_vector->tx.ring) { |
31f5d9b1 TN |
1557 | snprintf(q_vector->name, sizeof(q_vector->name), |
1558 | "%s-tx-%u", netdev->name, ti++); | |
92915f71 GR |
1559 | } else { |
1560 | /* skip this unused q_vector */ | |
1561 | continue; | |
1562 | } | |
fa71ae27 AD |
1563 | err = request_irq(entry->vector, &ixgbevf_msix_clean_rings, 0, |
1564 | q_vector->name, q_vector); | |
92915f71 GR |
1565 | if (err) { |
1566 | hw_dbg(&adapter->hw, | |
dec0d8e4 JK |
1567 | "request_irq failed for MSIX interrupt Error: %d\n", |
1568 | err); | |
92915f71 GR |
1569 | goto free_queue_irqs; |
1570 | } | |
1571 | } | |
1572 | ||
92915f71 | 1573 | err = request_irq(adapter->msix_entries[vector].vector, |
4b2cd27f | 1574 | &ixgbevf_msix_other, 0, netdev->name, adapter); |
92915f71 | 1575 | if (err) { |
dec0d8e4 JK |
1576 | hw_dbg(&adapter->hw, "request_irq for msix_other failed: %d\n", |
1577 | err); | |
92915f71 GR |
1578 | goto free_queue_irqs; |
1579 | } | |
1580 | ||
1581 | return 0; | |
1582 | ||
1583 | free_queue_irqs: | |
fa71ae27 AD |
1584 | while (vector) { |
1585 | vector--; | |
1586 | free_irq(adapter->msix_entries[vector].vector, | |
1587 | adapter->q_vector[vector]); | |
1588 | } | |
a1f6c6b1 | 1589 | /* This failure is non-recoverable - it indicates the system is |
1590 | * out of MSIX vector resources and the VF driver cannot run | |
1591 | * without them. Set the number of msix vectors to zero | |
1592 | * indicating that not enough can be allocated. The error | |
1593 | * will be returned to the user indicating device open failed. | |
1594 | * Any further attempts to force the driver to open will also | |
1595 | * fail. The only way to recover is to unload the driver and | |
1596 | * reload it again. If the system has recovered some MSIX | |
1597 | * vectors then it may succeed. | |
1598 | */ | |
1599 | adapter->num_msix_vectors = 0; | |
92915f71 GR |
1600 | return err; |
1601 | } | |
1602 | ||
92915f71 GR |
1603 | /** |
1604 | * ixgbevf_request_irq - initialize interrupts | |
1605 | * @adapter: board private structure | |
1606 | * | |
1607 | * Attempts to configure interrupts using the best available | |
1608 | * capabilities of the hardware and kernel. | |
1609 | **/ | |
1610 | static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter) | |
1611 | { | |
50985b5f | 1612 | int err = ixgbevf_request_msix_irqs(adapter); |
92915f71 GR |
1613 | |
1614 | if (err) | |
dec0d8e4 | 1615 | hw_dbg(&adapter->hw, "request_irq failed, Error %d\n", err); |
92915f71 GR |
1616 | |
1617 | return err; | |
1618 | } | |
1619 | ||
1620 | static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter) | |
1621 | { | |
92915f71 GR |
1622 | int i, q_vectors; |
1623 | ||
eeffceee MR |
1624 | if (!adapter->msix_entries) |
1625 | return; | |
1626 | ||
92915f71 | 1627 | q_vectors = adapter->num_msix_vectors; |
92915f71 GR |
1628 | i = q_vectors - 1; |
1629 | ||
fa71ae27 | 1630 | free_irq(adapter->msix_entries[i].vector, adapter); |
92915f71 GR |
1631 | i--; |
1632 | ||
1633 | for (; i >= 0; i--) { | |
fa71ae27 AD |
1634 | /* free only the irqs that were actually requested */ |
1635 | if (!adapter->q_vector[i]->rx.ring && | |
1636 | !adapter->q_vector[i]->tx.ring) | |
1637 | continue; | |
1638 | ||
92915f71 GR |
1639 | free_irq(adapter->msix_entries[i].vector, |
1640 | adapter->q_vector[i]); | |
1641 | } | |
92915f71 GR |
1642 | } |
1643 | ||
1644 | /** | |
1645 | * ixgbevf_irq_disable - Mask off interrupt generation on the NIC | |
1646 | * @adapter: board private structure | |
1647 | **/ | |
1648 | static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter) | |
1649 | { | |
92915f71 | 1650 | struct ixgbe_hw *hw = &adapter->hw; |
5f3600eb | 1651 | int i; |
92915f71 | 1652 | |
5f3600eb | 1653 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAM, 0); |
92915f71 | 1654 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0); |
5f3600eb | 1655 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, 0); |
92915f71 GR |
1656 | |
1657 | IXGBE_WRITE_FLUSH(hw); | |
1658 | ||
1659 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1660 | synchronize_irq(adapter->msix_entries[i].vector); | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * ixgbevf_irq_enable - Enable default interrupt generation settings | |
1665 | * @adapter: board private structure | |
1666 | **/ | |
5f3600eb | 1667 | static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter) |
92915f71 GR |
1668 | { |
1669 | struct ixgbe_hw *hw = &adapter->hw; | |
92915f71 | 1670 | |
5f3600eb AD |
1671 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAM, adapter->eims_enable_mask); |
1672 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, adapter->eims_enable_mask); | |
1673 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, adapter->eims_enable_mask); | |
92915f71 GR |
1674 | } |
1675 | ||
de02decb DS |
1676 | /** |
1677 | * ixgbevf_configure_tx_ring - Configure 82599 VF Tx ring after Reset | |
1678 | * @adapter: board private structure | |
1679 | * @ring: structure containing ring specific data | |
1680 | * | |
1681 | * Configure the Tx descriptor ring after a reset. | |
1682 | **/ | |
1683 | static void ixgbevf_configure_tx_ring(struct ixgbevf_adapter *adapter, | |
1684 | struct ixgbevf_ring *ring) | |
1685 | { | |
1686 | struct ixgbe_hw *hw = &adapter->hw; | |
1687 | u64 tdba = ring->dma; | |
1688 | int wait_loop = 10; | |
1689 | u32 txdctl = IXGBE_TXDCTL_ENABLE; | |
1690 | u8 reg_idx = ring->reg_idx; | |
1691 | ||
1692 | /* disable queue to avoid issues while updating state */ | |
1693 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); | |
1694 | IXGBE_WRITE_FLUSH(hw); | |
1695 | ||
1696 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(reg_idx), tdba & DMA_BIT_MASK(32)); | |
1697 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(reg_idx), tdba >> 32); | |
1698 | IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(reg_idx), | |
1699 | ring->count * sizeof(union ixgbe_adv_tx_desc)); | |
1700 | ||
1701 | /* disable head writeback */ | |
1702 | IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAH(reg_idx), 0); | |
1703 | IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAL(reg_idx), 0); | |
1704 | ||
1705 | /* enable relaxed ordering */ | |
1706 | IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(reg_idx), | |
1707 | (IXGBE_DCA_TXCTRL_DESC_RRO_EN | | |
1708 | IXGBE_DCA_TXCTRL_DATA_RRO_EN)); | |
1709 | ||
1710 | /* reset head and tail pointers */ | |
1711 | IXGBE_WRITE_REG(hw, IXGBE_VFTDH(reg_idx), 0); | |
1712 | IXGBE_WRITE_REG(hw, IXGBE_VFTDT(reg_idx), 0); | |
dbf8b0d8 | 1713 | ring->tail = adapter->io_addr + IXGBE_VFTDT(reg_idx); |
de02decb DS |
1714 | |
1715 | /* reset ntu and ntc to place SW in sync with hardwdare */ | |
1716 | ring->next_to_clean = 0; | |
1717 | ring->next_to_use = 0; | |
1718 | ||
1719 | /* In order to avoid issues WTHRESH + PTHRESH should always be equal | |
1720 | * to or less than the number of on chip descriptors, which is | |
1721 | * currently 40. | |
1722 | */ | |
1723 | txdctl |= (8 << 16); /* WTHRESH = 8 */ | |
1724 | ||
1725 | /* Setting PTHRESH to 32 both improves performance */ | |
8d055cc0 JK |
1726 | txdctl |= (1u << 8) | /* HTHRESH = 1 */ |
1727 | 32; /* PTHRESH = 32 */ | |
de02decb | 1728 | |
865a4d98 ET |
1729 | /* reinitialize tx_buffer_info */ |
1730 | memset(ring->tx_buffer_info, 0, | |
1731 | sizeof(struct ixgbevf_tx_buffer) * ring->count); | |
1732 | ||
e08400b7 | 1733 | clear_bit(__IXGBEVF_HANG_CHECK_ARMED, &ring->state); |
4be87727 | 1734 | clear_bit(__IXGBEVF_TX_XDP_RING_PRIMED, &ring->state); |
e08400b7 | 1735 | |
de02decb DS |
1736 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(reg_idx), txdctl); |
1737 | ||
1738 | /* poll to verify queue is enabled */ | |
1739 | do { | |
1740 | usleep_range(1000, 2000); | |
1741 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(reg_idx)); | |
1742 | } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); | |
1743 | if (!wait_loop) | |
ee95053f | 1744 | hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); |
de02decb DS |
1745 | } |
1746 | ||
92915f71 GR |
1747 | /** |
1748 | * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset | |
1749 | * @adapter: board private structure | |
1750 | * | |
1751 | * Configure the Tx unit of the MAC after a reset. | |
1752 | **/ | |
1753 | static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter) | |
1754 | { | |
de02decb | 1755 | u32 i; |
92915f71 GR |
1756 | |
1757 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
de02decb DS |
1758 | for (i = 0; i < adapter->num_tx_queues; i++) |
1759 | ixgbevf_configure_tx_ring(adapter, adapter->tx_ring[i]); | |
21092e9c TN |
1760 | for (i = 0; i < adapter->num_xdp_queues; i++) |
1761 | ixgbevf_configure_tx_ring(adapter, adapter->xdp_ring[i]); | |
92915f71 GR |
1762 | } |
1763 | ||
1764 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
1765 | ||
f15c5ba5 ET |
1766 | static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, |
1767 | struct ixgbevf_ring *ring, int index) | |
92915f71 | 1768 | { |
92915f71 GR |
1769 | struct ixgbe_hw *hw = &adapter->hw; |
1770 | u32 srrctl; | |
1771 | ||
92915f71 GR |
1772 | srrctl = IXGBE_SRRCTL_DROP_EN; |
1773 | ||
bad17234 | 1774 | srrctl |= IXGBEVF_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; |
f15c5ba5 ET |
1775 | if (ring_uses_large_buffer(ring)) |
1776 | srrctl |= IXGBEVF_RXBUFFER_3072 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1777 | else | |
1778 | srrctl |= IXGBEVF_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
77d5dfca | 1779 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; |
92915f71 | 1780 | |
92915f71 GR |
1781 | IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl); |
1782 | } | |
1783 | ||
1bb9c639 DS |
1784 | static void ixgbevf_setup_psrtype(struct ixgbevf_adapter *adapter) |
1785 | { | |
1786 | struct ixgbe_hw *hw = &adapter->hw; | |
1787 | ||
1788 | /* PSRTYPE must be initialized in 82599 */ | |
1789 | u32 psrtype = IXGBE_PSRTYPE_TCPHDR | IXGBE_PSRTYPE_UDPHDR | | |
1790 | IXGBE_PSRTYPE_IPV4HDR | IXGBE_PSRTYPE_IPV6HDR | | |
1791 | IXGBE_PSRTYPE_L2HDR; | |
1792 | ||
1793 | if (adapter->num_rx_queues > 1) | |
8d055cc0 | 1794 | psrtype |= BIT(29); |
1bb9c639 DS |
1795 | |
1796 | IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); | |
1797 | } | |
1798 | ||
de02decb DS |
1799 | #define IXGBEVF_MAX_RX_DESC_POLL 10 |
1800 | static void ixgbevf_disable_rx_queue(struct ixgbevf_adapter *adapter, | |
1801 | struct ixgbevf_ring *ring) | |
1802 | { | |
1803 | struct ixgbe_hw *hw = &adapter->hw; | |
1804 | int wait_loop = IXGBEVF_MAX_RX_DESC_POLL; | |
1805 | u32 rxdctl; | |
1806 | u8 reg_idx = ring->reg_idx; | |
1807 | ||
26597802 MR |
1808 | if (IXGBE_REMOVED(hw->hw_addr)) |
1809 | return; | |
de02decb DS |
1810 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); |
1811 | rxdctl &= ~IXGBE_RXDCTL_ENABLE; | |
1812 | ||
1813 | /* write value back with RXDCTL.ENABLE bit cleared */ | |
1814 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(reg_idx), rxdctl); | |
1815 | ||
dec0d8e4 | 1816 | /* the hardware may take up to 100us to really disable the Rx queue */ |
de02decb DS |
1817 | do { |
1818 | udelay(10); | |
1819 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); | |
1820 | } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE)); | |
1821 | ||
1822 | if (!wait_loop) | |
1823 | pr_err("RXDCTL.ENABLE queue %d not cleared while polling\n", | |
1824 | reg_idx); | |
1825 | } | |
1826 | ||
1827 | static void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, | |
1828 | struct ixgbevf_ring *ring) | |
1829 | { | |
1830 | struct ixgbe_hw *hw = &adapter->hw; | |
1831 | int wait_loop = IXGBEVF_MAX_RX_DESC_POLL; | |
1832 | u32 rxdctl; | |
1833 | u8 reg_idx = ring->reg_idx; | |
1834 | ||
26597802 MR |
1835 | if (IXGBE_REMOVED(hw->hw_addr)) |
1836 | return; | |
de02decb DS |
1837 | do { |
1838 | usleep_range(1000, 2000); | |
1839 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); | |
1840 | } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); | |
1841 | ||
1842 | if (!wait_loop) | |
1843 | pr_err("RXDCTL.ENABLE queue %d not set while polling\n", | |
1844 | reg_idx); | |
1845 | } | |
1846 | ||
e60ae003 TN |
1847 | /** |
1848 | * ixgbevf_init_rss_key - Initialize adapter RSS key | |
1849 | * @adapter: device handle | |
1850 | * | |
1851 | * Allocates and initializes the RSS key if it is not allocated. | |
1852 | **/ | |
1853 | static inline int ixgbevf_init_rss_key(struct ixgbevf_adapter *adapter) | |
1854 | { | |
1855 | u32 *rss_key; | |
1856 | ||
1857 | if (!adapter->rss_key) { | |
1858 | rss_key = kzalloc(IXGBEVF_RSS_HASH_KEY_SIZE, GFP_KERNEL); | |
1859 | if (unlikely(!rss_key)) | |
1860 | return -ENOMEM; | |
1861 | ||
1862 | netdev_rss_key_fill(rss_key, IXGBEVF_RSS_HASH_KEY_SIZE); | |
1863 | adapter->rss_key = rss_key; | |
1864 | } | |
1865 | ||
1866 | return 0; | |
1867 | } | |
1868 | ||
9295edb4 ET |
1869 | static void ixgbevf_setup_vfmrqc(struct ixgbevf_adapter *adapter) |
1870 | { | |
1871 | struct ixgbe_hw *hw = &adapter->hw; | |
1872 | u32 vfmrqc = 0, vfreta = 0; | |
9295edb4 | 1873 | u16 rss_i = adapter->num_rx_queues; |
9cba434f | 1874 | u8 i, j; |
9295edb4 ET |
1875 | |
1876 | /* Fill out hash function seeds */ | |
9cba434f | 1877 | for (i = 0; i < IXGBEVF_VFRSSRK_REGS; i++) |
e60ae003 | 1878 | IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), *(adapter->rss_key + i)); |
9295edb4 | 1879 | |
9cba434f | 1880 | for (i = 0, j = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++, j++) { |
9295edb4 ET |
1881 | if (j == rss_i) |
1882 | j = 0; | |
9cba434f ET |
1883 | |
1884 | adapter->rss_indir_tbl[i] = j; | |
1885 | ||
1886 | vfreta |= j << (i & 0x3) * 8; | |
1887 | if ((i & 3) == 3) { | |
9295edb4 | 1888 | IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), vfreta); |
9cba434f ET |
1889 | vfreta = 0; |
1890 | } | |
9295edb4 ET |
1891 | } |
1892 | ||
1893 | /* Perform hash on these packet types */ | |
1894 | vfmrqc |= IXGBE_VFMRQC_RSS_FIELD_IPV4 | | |
1895 | IXGBE_VFMRQC_RSS_FIELD_IPV4_TCP | | |
1896 | IXGBE_VFMRQC_RSS_FIELD_IPV6 | | |
1897 | IXGBE_VFMRQC_RSS_FIELD_IPV6_TCP; | |
1898 | ||
1899 | vfmrqc |= IXGBE_VFMRQC_RSSEN; | |
1900 | ||
1901 | IXGBE_WRITE_REG(hw, IXGBE_VFMRQC, vfmrqc); | |
1902 | } | |
1903 | ||
de02decb DS |
1904 | static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter *adapter, |
1905 | struct ixgbevf_ring *ring) | |
1906 | { | |
1907 | struct ixgbe_hw *hw = &adapter->hw; | |
24bff091 | 1908 | union ixgbe_adv_rx_desc *rx_desc; |
de02decb DS |
1909 | u64 rdba = ring->dma; |
1910 | u32 rxdctl; | |
1911 | u8 reg_idx = ring->reg_idx; | |
1912 | ||
1913 | /* disable queue to avoid issues while updating state */ | |
1914 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(reg_idx)); | |
1915 | ixgbevf_disable_rx_queue(adapter, ring); | |
1916 | ||
1917 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(reg_idx), rdba & DMA_BIT_MASK(32)); | |
1918 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(reg_idx), rdba >> 32); | |
1919 | IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(reg_idx), | |
1920 | ring->count * sizeof(union ixgbe_adv_rx_desc)); | |
1921 | ||
33b0eb15 | 1922 | #ifndef CONFIG_SPARC |
de02decb DS |
1923 | /* enable relaxed ordering */ |
1924 | IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx), | |
1925 | IXGBE_DCA_RXCTRL_DESC_RRO_EN); | |
33b0eb15 BM |
1926 | #else |
1927 | IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx), | |
1928 | IXGBE_DCA_RXCTRL_DESC_RRO_EN | | |
1929 | IXGBE_DCA_RXCTRL_DATA_WRO_EN); | |
1930 | #endif | |
de02decb DS |
1931 | |
1932 | /* reset head and tail pointers */ | |
1933 | IXGBE_WRITE_REG(hw, IXGBE_VFRDH(reg_idx), 0); | |
1934 | IXGBE_WRITE_REG(hw, IXGBE_VFRDT(reg_idx), 0); | |
dbf8b0d8 | 1935 | ring->tail = adapter->io_addr + IXGBE_VFRDT(reg_idx); |
de02decb | 1936 | |
40b8178b ET |
1937 | /* initialize rx_buffer_info */ |
1938 | memset(ring->rx_buffer_info, 0, | |
1939 | sizeof(struct ixgbevf_rx_buffer) * ring->count); | |
1940 | ||
24bff091 ET |
1941 | /* initialize Rx descriptor 0 */ |
1942 | rx_desc = IXGBEVF_RX_DESC(ring, 0); | |
1943 | rx_desc->wb.upper.length = 0; | |
1944 | ||
de02decb DS |
1945 | /* reset ntu and ntc to place SW in sync with hardwdare */ |
1946 | ring->next_to_clean = 0; | |
1947 | ring->next_to_use = 0; | |
bad17234 | 1948 | ring->next_to_alloc = 0; |
de02decb | 1949 | |
f15c5ba5 | 1950 | ixgbevf_configure_srrctl(adapter, ring, reg_idx); |
de02decb | 1951 | |
1ab37e12 ET |
1952 | /* RXDCTL.RLPML does not work on 82599 */ |
1953 | if (adapter->hw.mac.type != ixgbe_mac_82599_vf) { | |
1954 | rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | | |
1955 | IXGBE_RXDCTL_RLPML_EN); | |
1956 | ||
1957 | #if (PAGE_SIZE < 8192) | |
1958 | /* Limit the maximum frame size so we don't overrun the skb */ | |
1959 | if (ring_uses_build_skb(ring) && | |
1960 | !ring_uses_large_buffer(ring)) | |
1961 | rxdctl |= IXGBEVF_MAX_FRAME_BUILD_SKB | | |
1962 | IXGBE_RXDCTL_RLPML_EN; | |
1963 | #endif | |
1964 | } | |
bad17234 | 1965 | |
de02decb DS |
1966 | rxdctl |= IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME; |
1967 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(reg_idx), rxdctl); | |
1968 | ||
1969 | ixgbevf_rx_desc_queue_enable(adapter, ring); | |
095e2617 | 1970 | ixgbevf_alloc_rx_buffers(ring, ixgbevf_desc_unused(ring)); |
de02decb DS |
1971 | } |
1972 | ||
f15c5ba5 ET |
1973 | static void ixgbevf_set_rx_buffer_len(struct ixgbevf_adapter *adapter, |
1974 | struct ixgbevf_ring *rx_ring) | |
1975 | { | |
1976 | struct net_device *netdev = adapter->netdev; | |
1977 | unsigned int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1978 | ||
1979 | /* set build_skb and buffer size flags */ | |
1ab37e12 | 1980 | clear_ring_build_skb_enabled(rx_ring); |
f15c5ba5 ET |
1981 | clear_ring_uses_large_buffer(rx_ring); |
1982 | ||
1983 | if (adapter->flags & IXGBEVF_FLAGS_LEGACY_RX) | |
1984 | return; | |
1985 | ||
fe68195d SMJ |
1986 | if (PAGE_SIZE < 8192) |
1987 | if (max_frame > IXGBEVF_MAX_FRAME_BUILD_SKB) | |
1988 | set_ring_uses_large_buffer(rx_ring); | |
1ab37e12 | 1989 | |
fe68195d SMJ |
1990 | /* 82599 can't rely on RXDCTL.RLPML to restrict the size of the frame */ |
1991 | if (adapter->hw.mac.type == ixgbe_mac_82599_vf && !ring_uses_large_buffer(rx_ring)) | |
1992 | return; | |
f15c5ba5 | 1993 | |
fe68195d | 1994 | set_ring_build_skb_enabled(rx_ring); |
f15c5ba5 ET |
1995 | } |
1996 | ||
92915f71 GR |
1997 | /** |
1998 | * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset | |
1999 | * @adapter: board private structure | |
2000 | * | |
2001 | * Configure the Rx unit of the MAC after a reset. | |
2002 | **/ | |
2003 | static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter) | |
2004 | { | |
bad17234 ET |
2005 | struct ixgbe_hw *hw = &adapter->hw; |
2006 | struct net_device *netdev = adapter->netdev; | |
6a11e52b | 2007 | int i, ret; |
92915f71 | 2008 | |
1bb9c639 | 2009 | ixgbevf_setup_psrtype(adapter); |
9295edb4 ET |
2010 | if (hw->mac.type >= ixgbe_mac_X550_vf) |
2011 | ixgbevf_setup_vfmrqc(adapter); | |
dd1fe113 | 2012 | |
14b22cd9 | 2013 | spin_lock_bh(&adapter->mbx_lock); |
bad17234 | 2014 | /* notify the PF of our intent to use this size of frame */ |
6a11e52b | 2015 | ret = hw->mac.ops.set_rlpml(hw, netdev->mtu + ETH_HLEN + ETH_FCS_LEN); |
14b22cd9 | 2016 | spin_unlock_bh(&adapter->mbx_lock); |
6a11e52b TN |
2017 | if (ret) |
2018 | dev_err(&adapter->pdev->dev, | |
2019 | "Failed to set MTU at %d\n", netdev->mtu); | |
92915f71 | 2020 | |
92915f71 | 2021 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
dec0d8e4 JK |
2022 | * the Base and Length of the Rx Descriptor Ring |
2023 | */ | |
f15c5ba5 ET |
2024 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2025 | struct ixgbevf_ring *rx_ring = adapter->rx_ring[i]; | |
2026 | ||
2027 | ixgbevf_set_rx_buffer_len(adapter, rx_ring); | |
2028 | ixgbevf_configure_rx_ring(adapter, rx_ring); | |
2029 | } | |
92915f71 GR |
2030 | } |
2031 | ||
80d5c368 PM |
2032 | static int ixgbevf_vlan_rx_add_vid(struct net_device *netdev, |
2033 | __be16 proto, u16 vid) | |
92915f71 GR |
2034 | { |
2035 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2036 | struct ixgbe_hw *hw = &adapter->hw; | |
2ddc7fe1 AD |
2037 | int err; |
2038 | ||
55fdd45b | 2039 | spin_lock_bh(&adapter->mbx_lock); |
1c55ed76 | 2040 | |
92915f71 | 2041 | /* add VID to filter table */ |
2ddc7fe1 | 2042 | err = hw->mac.ops.set_vfta(hw, vid, 0, true); |
1c55ed76 | 2043 | |
55fdd45b | 2044 | spin_unlock_bh(&adapter->mbx_lock); |
1c55ed76 | 2045 | |
eac0b680 JS |
2046 | if (err) { |
2047 | netdev_err(netdev, "VF could not set VLAN %d\n", vid); | |
2048 | ||
2049 | /* translate error return types so error makes sense */ | |
2050 | if (err == IXGBE_ERR_MBX) | |
2051 | return -EIO; | |
2ddc7fe1 | 2052 | |
eac0b680 JS |
2053 | if (err == IXGBE_ERR_INVALID_ARGUMENT) |
2054 | return -EACCES; | |
2055 | } | |
2ddc7fe1 | 2056 | |
dadcd65f | 2057 | set_bit(vid, adapter->active_vlans); |
8e586137 | 2058 | |
2ddc7fe1 | 2059 | return err; |
92915f71 GR |
2060 | } |
2061 | ||
80d5c368 PM |
2062 | static int ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, |
2063 | __be16 proto, u16 vid) | |
92915f71 GR |
2064 | { |
2065 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2066 | struct ixgbe_hw *hw = &adapter->hw; | |
50985b5f | 2067 | int err; |
92915f71 | 2068 | |
55fdd45b | 2069 | spin_lock_bh(&adapter->mbx_lock); |
1c55ed76 | 2070 | |
92915f71 | 2071 | /* remove VID from filter table */ |
92fe0bf7 | 2072 | err = hw->mac.ops.set_vfta(hw, vid, 0, false); |
1c55ed76 | 2073 | |
55fdd45b | 2074 | spin_unlock_bh(&adapter->mbx_lock); |
1c55ed76 | 2075 | |
eac0b680 JS |
2076 | if (err) |
2077 | netdev_err(netdev, "Could not remove VLAN %d\n", vid); | |
2078 | ||
dadcd65f | 2079 | clear_bit(vid, adapter->active_vlans); |
8e586137 | 2080 | |
2ddc7fe1 | 2081 | return err; |
92915f71 GR |
2082 | } |
2083 | ||
2084 | static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter) | |
2085 | { | |
dadcd65f | 2086 | u16 vid; |
92915f71 | 2087 | |
dadcd65f | 2088 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 PM |
2089 | ixgbevf_vlan_rx_add_vid(adapter->netdev, |
2090 | htons(ETH_P_8021Q), vid); | |
92915f71 GR |
2091 | } |
2092 | ||
46ec20ff GR |
2093 | static int ixgbevf_write_uc_addr_list(struct net_device *netdev) |
2094 | { | |
2095 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2096 | struct ixgbe_hw *hw = &adapter->hw; | |
2097 | int count = 0; | |
2098 | ||
46ec20ff GR |
2099 | if (!netdev_uc_empty(netdev)) { |
2100 | struct netdev_hw_addr *ha; | |
dec0d8e4 | 2101 | |
46ec20ff GR |
2102 | netdev_for_each_uc_addr(ha, netdev) { |
2103 | hw->mac.ops.set_uc_addr(hw, ++count, ha->addr); | |
2104 | udelay(200); | |
2105 | } | |
2106 | } else { | |
dec0d8e4 JK |
2107 | /* If the list is empty then send message to PF driver to |
2108 | * clear all MAC VLANs on this VF. | |
46ec20ff GR |
2109 | */ |
2110 | hw->mac.ops.set_uc_addr(hw, 0, NULL); | |
2111 | } | |
2112 | ||
2113 | return count; | |
2114 | } | |
2115 | ||
92915f71 | 2116 | /** |
dee847f5 | 2117 | * ixgbevf_set_rx_mode - Multicast and unicast set |
92915f71 GR |
2118 | * @netdev: network interface device structure |
2119 | * | |
2120 | * The set_rx_method entry point is called whenever the multicast address | |
dee847f5 GR |
2121 | * list, unicast address list or the network interface flags are updated. |
2122 | * This routine is responsible for configuring the hardware for proper | |
2123 | * multicast mode and configuring requested unicast filters. | |
92915f71 GR |
2124 | **/ |
2125 | static void ixgbevf_set_rx_mode(struct net_device *netdev) | |
2126 | { | |
2127 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2128 | struct ixgbe_hw *hw = &adapter->hw; | |
8443c1a4 HS |
2129 | unsigned int flags = netdev->flags; |
2130 | int xcast_mode; | |
2131 | ||
41e544cd DS |
2132 | /* request the most inclusive mode we need */ |
2133 | if (flags & IFF_PROMISC) | |
2134 | xcast_mode = IXGBEVF_XCAST_MODE_PROMISC; | |
2135 | else if (flags & IFF_ALLMULTI) | |
2136 | xcast_mode = IXGBEVF_XCAST_MODE_ALLMULTI; | |
2137 | else if (flags & (IFF_BROADCAST | IFF_MULTICAST)) | |
2138 | xcast_mode = IXGBEVF_XCAST_MODE_MULTI; | |
2139 | else | |
2140 | xcast_mode = IXGBEVF_XCAST_MODE_NONE; | |
2141 | ||
55fdd45b | 2142 | spin_lock_bh(&adapter->mbx_lock); |
1c55ed76 | 2143 | |
8b44a8a0 | 2144 | hw->mac.ops.update_xcast_mode(hw, xcast_mode); |
8443c1a4 | 2145 | |
92915f71 | 2146 | /* reprogram multicast list */ |
92fe0bf7 | 2147 | hw->mac.ops.update_mc_addr_list(hw, netdev); |
46ec20ff GR |
2148 | |
2149 | ixgbevf_write_uc_addr_list(netdev); | |
1c55ed76 | 2150 | |
55fdd45b | 2151 | spin_unlock_bh(&adapter->mbx_lock); |
92915f71 GR |
2152 | } |
2153 | ||
2154 | static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter) | |
2155 | { | |
2156 | int q_idx; | |
2157 | struct ixgbevf_q_vector *q_vector; | |
2158 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2159 | ||
2160 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
92915f71 | 2161 | q_vector = adapter->q_vector[q_idx]; |
fa71ae27 | 2162 | napi_enable(&q_vector->napi); |
92915f71 GR |
2163 | } |
2164 | } | |
2165 | ||
2166 | static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter) | |
2167 | { | |
2168 | int q_idx; | |
2169 | struct ixgbevf_q_vector *q_vector; | |
2170 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2171 | ||
2172 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
2173 | q_vector = adapter->q_vector[q_idx]; | |
92915f71 GR |
2174 | napi_disable(&q_vector->napi); |
2175 | } | |
2176 | } | |
2177 | ||
220fe050 DS |
2178 | static int ixgbevf_configure_dcb(struct ixgbevf_adapter *adapter) |
2179 | { | |
2180 | struct ixgbe_hw *hw = &adapter->hw; | |
2181 | unsigned int def_q = 0; | |
2182 | unsigned int num_tcs = 0; | |
2dc571aa ET |
2183 | unsigned int num_rx_queues = adapter->num_rx_queues; |
2184 | unsigned int num_tx_queues = adapter->num_tx_queues; | |
220fe050 DS |
2185 | int err; |
2186 | ||
2187 | spin_lock_bh(&adapter->mbx_lock); | |
2188 | ||
2189 | /* fetch queue configuration from the PF */ | |
2190 | err = ixgbevf_get_queues(hw, &num_tcs, &def_q); | |
2191 | ||
2192 | spin_unlock_bh(&adapter->mbx_lock); | |
2193 | ||
2194 | if (err) | |
2195 | return err; | |
2196 | ||
2197 | if (num_tcs > 1) { | |
2dc571aa ET |
2198 | /* we need only one Tx queue */ |
2199 | num_tx_queues = 1; | |
2200 | ||
220fe050 | 2201 | /* update default Tx ring register index */ |
87e70ab9 | 2202 | adapter->tx_ring[0]->reg_idx = def_q; |
220fe050 DS |
2203 | |
2204 | /* we need as many queues as traffic classes */ | |
2205 | num_rx_queues = num_tcs; | |
2206 | } | |
2207 | ||
2208 | /* if we have a bad config abort request queue reset */ | |
2dc571aa ET |
2209 | if ((adapter->num_rx_queues != num_rx_queues) || |
2210 | (adapter->num_tx_queues != num_tx_queues)) { | |
220fe050 DS |
2211 | /* force mailbox timeout to prevent further messages */ |
2212 | hw->mbx.timeout = 0; | |
2213 | ||
2214 | /* wait for watchdog to come around and bail us out */ | |
d5dd7c3f | 2215 | set_bit(__IXGBEVF_QUEUE_RESET_REQUESTED, &adapter->state); |
220fe050 DS |
2216 | } |
2217 | ||
2218 | return 0; | |
2219 | } | |
2220 | ||
92915f71 GR |
2221 | static void ixgbevf_configure(struct ixgbevf_adapter *adapter) |
2222 | { | |
220fe050 DS |
2223 | ixgbevf_configure_dcb(adapter); |
2224 | ||
de02decb | 2225 | ixgbevf_set_rx_mode(adapter->netdev); |
92915f71 GR |
2226 | |
2227 | ixgbevf_restore_vlan(adapter); | |
7f68d430 | 2228 | ixgbevf_ipsec_restore(adapter); |
92915f71 GR |
2229 | |
2230 | ixgbevf_configure_tx(adapter); | |
2231 | ixgbevf_configure_rx(adapter); | |
92915f71 GR |
2232 | } |
2233 | ||
33bd9f60 GR |
2234 | static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter) |
2235 | { | |
2236 | /* Only save pre-reset stats if there are some */ | |
2237 | if (adapter->stats.vfgprc || adapter->stats.vfgptc) { | |
2238 | adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc - | |
2239 | adapter->stats.base_vfgprc; | |
2240 | adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc - | |
2241 | adapter->stats.base_vfgptc; | |
2242 | adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc - | |
2243 | adapter->stats.base_vfgorc; | |
2244 | adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc - | |
2245 | adapter->stats.base_vfgotc; | |
2246 | adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc - | |
2247 | adapter->stats.base_vfmprc; | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter) | |
2252 | { | |
2253 | struct ixgbe_hw *hw = &adapter->hw; | |
2254 | ||
2255 | adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC); | |
2256 | adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB); | |
2257 | adapter->stats.last_vfgorc |= | |
2258 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32); | |
2259 | adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC); | |
2260 | adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB); | |
2261 | adapter->stats.last_vfgotc |= | |
2262 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32); | |
2263 | adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC); | |
2264 | ||
2265 | adapter->stats.base_vfgprc = adapter->stats.last_vfgprc; | |
2266 | adapter->stats.base_vfgorc = adapter->stats.last_vfgorc; | |
2267 | adapter->stats.base_vfgptc = adapter->stats.last_vfgptc; | |
2268 | adapter->stats.base_vfgotc = adapter->stats.last_vfgotc; | |
2269 | adapter->stats.base_vfmprc = adapter->stats.last_vfmprc; | |
2270 | } | |
2271 | ||
31186785 AD |
2272 | static void ixgbevf_negotiate_api(struct ixgbevf_adapter *adapter) |
2273 | { | |
2274 | struct ixgbe_hw *hw = &adapter->hw; | |
64d8db7d | 2275 | static const int api[] = { |
339f2896 | 2276 | ixgbe_mbox_api_15, |
64d8db7d CIK |
2277 | ixgbe_mbox_api_14, |
2278 | ixgbe_mbox_api_13, | |
2279 | ixgbe_mbox_api_12, | |
2280 | ixgbe_mbox_api_11, | |
2281 | ixgbe_mbox_api_10, | |
2282 | ixgbe_mbox_api_unknown | |
2283 | }; | |
50985b5f | 2284 | int err, idx = 0; |
31186785 | 2285 | |
55fdd45b | 2286 | spin_lock_bh(&adapter->mbx_lock); |
31186785 AD |
2287 | |
2288 | while (api[idx] != ixgbe_mbox_api_unknown) { | |
2f8214fe | 2289 | err = hw->mac.ops.negotiate_api_version(hw, api[idx]); |
31186785 AD |
2290 | if (!err) |
2291 | break; | |
2292 | idx++; | |
2293 | } | |
2294 | ||
339f2896 RT |
2295 | if (hw->api_version >= ixgbe_mbox_api_15) { |
2296 | hw->mbx.ops.init_params(hw); | |
2297 | memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops, | |
2298 | sizeof(struct ixgbe_mbx_operations)); | |
2299 | } | |
2300 | ||
55fdd45b | 2301 | spin_unlock_bh(&adapter->mbx_lock); |
31186785 AD |
2302 | } |
2303 | ||
795180d8 | 2304 | static void ixgbevf_up_complete(struct ixgbevf_adapter *adapter) |
92915f71 GR |
2305 | { |
2306 | struct net_device *netdev = adapter->netdev; | |
443ebdd6 | 2307 | struct pci_dev *pdev = adapter->pdev; |
92915f71 | 2308 | struct ixgbe_hw *hw = &adapter->hw; |
443ebdd6 | 2309 | bool state; |
92915f71 GR |
2310 | |
2311 | ixgbevf_configure_msix(adapter); | |
2312 | ||
55fdd45b | 2313 | spin_lock_bh(&adapter->mbx_lock); |
1c55ed76 | 2314 | |
92fe0bf7 GR |
2315 | if (is_valid_ether_addr(hw->mac.addr)) |
2316 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0); | |
2317 | else | |
2318 | hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0); | |
92915f71 | 2319 | |
55fdd45b | 2320 | spin_unlock_bh(&adapter->mbx_lock); |
1c55ed76 | 2321 | |
443ebdd6 SM |
2322 | state = adapter->link_state; |
2323 | hw->mac.ops.get_link_state(hw, &adapter->link_state); | |
2324 | if (state && state != adapter->link_state) | |
2325 | dev_info(&pdev->dev, "VF is administratively disabled\n"); | |
2326 | ||
4e857c58 | 2327 | smp_mb__before_atomic(); |
92915f71 GR |
2328 | clear_bit(__IXGBEVF_DOWN, &adapter->state); |
2329 | ixgbevf_napi_enable_all(adapter); | |
2330 | ||
d9bdb57f ET |
2331 | /* clear any pending interrupts, may auto mask */ |
2332 | IXGBE_READ_REG(hw, IXGBE_VTEICR); | |
2333 | ixgbevf_irq_enable(adapter); | |
2334 | ||
92915f71 GR |
2335 | /* enable transmits */ |
2336 | netif_tx_start_all_queues(netdev); | |
2337 | ||
33bd9f60 GR |
2338 | ixgbevf_save_reset_stats(adapter); |
2339 | ixgbevf_init_last_counter_stats(adapter); | |
2340 | ||
4b2cd27f | 2341 | hw->mac.get_link_status = 1; |
9ac5c5cc | 2342 | mod_timer(&adapter->service_timer, jiffies); |
92915f71 GR |
2343 | } |
2344 | ||
795180d8 | 2345 | void ixgbevf_up(struct ixgbevf_adapter *adapter) |
92915f71 | 2346 | { |
92915f71 GR |
2347 | ixgbevf_configure(adapter); |
2348 | ||
795180d8 | 2349 | ixgbevf_up_complete(adapter); |
92915f71 GR |
2350 | } |
2351 | ||
2352 | /** | |
2353 | * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue | |
92915f71 GR |
2354 | * @rx_ring: ring to free buffers from |
2355 | **/ | |
05d063aa | 2356 | static void ixgbevf_clean_rx_ring(struct ixgbevf_ring *rx_ring) |
92915f71 | 2357 | { |
40b8178b | 2358 | u16 i = rx_ring->next_to_clean; |
92915f71 | 2359 | |
bad17234 ET |
2360 | /* Free Rx ring sk_buff */ |
2361 | if (rx_ring->skb) { | |
2362 | dev_kfree_skb(rx_ring->skb); | |
2363 | rx_ring->skb = NULL; | |
2364 | } | |
2365 | ||
bad17234 | 2366 | /* Free all the Rx ring pages */ |
40b8178b | 2367 | while (i != rx_ring->next_to_alloc) { |
bad17234 | 2368 | struct ixgbevf_rx_buffer *rx_buffer; |
92915f71 | 2369 | |
bad17234 | 2370 | rx_buffer = &rx_ring->rx_buffer_info[i]; |
16b35949 ET |
2371 | |
2372 | /* Invalidate cache lines that may have been written to by | |
2373 | * device so that we avoid corrupting memory. | |
2374 | */ | |
2375 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
2376 | rx_buffer->dma, | |
2377 | rx_buffer->page_offset, | |
f15c5ba5 | 2378 | ixgbevf_rx_bufsz(rx_ring), |
16b35949 ET |
2379 | DMA_FROM_DEVICE); |
2380 | ||
2381 | /* free resources associated with mapping */ | |
2382 | dma_unmap_page_attrs(rx_ring->dev, | |
2383 | rx_buffer->dma, | |
f15c5ba5 | 2384 | ixgbevf_rx_pg_size(rx_ring), |
16b35949 ET |
2385 | DMA_FROM_DEVICE, |
2386 | IXGBEVF_RX_DMA_ATTR); | |
2387 | ||
35074d69 ET |
2388 | __page_frag_cache_drain(rx_buffer->page, |
2389 | rx_buffer->pagecnt_bias); | |
2390 | ||
40b8178b ET |
2391 | i++; |
2392 | if (i == rx_ring->count) | |
2393 | i = 0; | |
92915f71 GR |
2394 | } |
2395 | ||
40b8178b ET |
2396 | rx_ring->next_to_alloc = 0; |
2397 | rx_ring->next_to_clean = 0; | |
2398 | rx_ring->next_to_use = 0; | |
92915f71 GR |
2399 | } |
2400 | ||
2401 | /** | |
2402 | * ixgbevf_clean_tx_ring - Free Tx Buffers | |
92915f71 GR |
2403 | * @tx_ring: ring to be cleaned |
2404 | **/ | |
05d063aa | 2405 | static void ixgbevf_clean_tx_ring(struct ixgbevf_ring *tx_ring) |
92915f71 | 2406 | { |
865a4d98 ET |
2407 | u16 i = tx_ring->next_to_clean; |
2408 | struct ixgbevf_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; | |
92915f71 | 2409 | |
865a4d98 ET |
2410 | while (i != tx_ring->next_to_use) { |
2411 | union ixgbe_adv_tx_desc *eop_desc, *tx_desc; | |
2412 | ||
2413 | /* Free all the Tx ring sk_buffs */ | |
21092e9c TN |
2414 | if (ring_is_xdp(tx_ring)) |
2415 | page_frag_free(tx_buffer->data); | |
2416 | else | |
2417 | dev_kfree_skb_any(tx_buffer->skb); | |
865a4d98 ET |
2418 | |
2419 | /* unmap skb header data */ | |
2420 | dma_unmap_single(tx_ring->dev, | |
2421 | dma_unmap_addr(tx_buffer, dma), | |
2422 | dma_unmap_len(tx_buffer, len), | |
2423 | DMA_TO_DEVICE); | |
2424 | ||
2425 | /* check for eop_desc to determine the end of the packet */ | |
2426 | eop_desc = tx_buffer->next_to_watch; | |
2427 | tx_desc = IXGBEVF_TX_DESC(tx_ring, i); | |
2428 | ||
2429 | /* unmap remaining buffers */ | |
2430 | while (tx_desc != eop_desc) { | |
2431 | tx_buffer++; | |
2432 | tx_desc++; | |
2433 | i++; | |
2434 | if (unlikely(i == tx_ring->count)) { | |
2435 | i = 0; | |
2436 | tx_buffer = tx_ring->tx_buffer_info; | |
2437 | tx_desc = IXGBEVF_TX_DESC(tx_ring, 0); | |
2438 | } | |
c0456c23 | 2439 | |
865a4d98 ET |
2440 | /* unmap any remaining paged data */ |
2441 | if (dma_unmap_len(tx_buffer, len)) | |
2442 | dma_unmap_page(tx_ring->dev, | |
2443 | dma_unmap_addr(tx_buffer, dma), | |
2444 | dma_unmap_len(tx_buffer, len), | |
2445 | DMA_TO_DEVICE); | |
2446 | } | |
2447 | ||
2448 | /* move us one more past the eop_desc for start of next pkt */ | |
2449 | tx_buffer++; | |
2450 | i++; | |
2451 | if (unlikely(i == tx_ring->count)) { | |
2452 | i = 0; | |
2453 | tx_buffer = tx_ring->tx_buffer_info; | |
2454 | } | |
92915f71 GR |
2455 | } |
2456 | ||
865a4d98 ET |
2457 | /* reset next_to_use and next_to_clean */ |
2458 | tx_ring->next_to_use = 0; | |
2459 | tx_ring->next_to_clean = 0; | |
92915f71 | 2460 | |
92915f71 GR |
2461 | } |
2462 | ||
2463 | /** | |
2464 | * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues | |
2465 | * @adapter: board private structure | |
2466 | **/ | |
2467 | static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter) | |
2468 | { | |
2469 | int i; | |
2470 | ||
2471 | for (i = 0; i < adapter->num_rx_queues; i++) | |
05d063aa | 2472 | ixgbevf_clean_rx_ring(adapter->rx_ring[i]); |
92915f71 GR |
2473 | } |
2474 | ||
2475 | /** | |
2476 | * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues | |
2477 | * @adapter: board private structure | |
2478 | **/ | |
2479 | static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter) | |
2480 | { | |
2481 | int i; | |
2482 | ||
2483 | for (i = 0; i < adapter->num_tx_queues; i++) | |
05d063aa | 2484 | ixgbevf_clean_tx_ring(adapter->tx_ring[i]); |
21092e9c TN |
2485 | for (i = 0; i < adapter->num_xdp_queues; i++) |
2486 | ixgbevf_clean_tx_ring(adapter->xdp_ring[i]); | |
92915f71 GR |
2487 | } |
2488 | ||
2489 | void ixgbevf_down(struct ixgbevf_adapter *adapter) | |
2490 | { | |
2491 | struct net_device *netdev = adapter->netdev; | |
2492 | struct ixgbe_hw *hw = &adapter->hw; | |
de02decb | 2493 | int i; |
92915f71 GR |
2494 | |
2495 | /* signal that we are down to the interrupt handler */ | |
5b346dc9 MR |
2496 | if (test_and_set_bit(__IXGBEVF_DOWN, &adapter->state)) |
2497 | return; /* do nothing if already down */ | |
858c3dda | 2498 | |
dec0d8e4 | 2499 | /* disable all enabled Rx queues */ |
858c3dda | 2500 | for (i = 0; i < adapter->num_rx_queues; i++) |
87e70ab9 | 2501 | ixgbevf_disable_rx_queue(adapter, adapter->rx_ring[i]); |
92915f71 | 2502 | |
d9bdb57f | 2503 | usleep_range(10000, 20000); |
92915f71 GR |
2504 | |
2505 | netif_tx_stop_all_queues(netdev); | |
2506 | ||
d9bdb57f ET |
2507 | /* call carrier off first to avoid false dev_watchdog timeouts */ |
2508 | netif_carrier_off(netdev); | |
2509 | netif_tx_disable(netdev); | |
2510 | ||
92915f71 GR |
2511 | ixgbevf_irq_disable(adapter); |
2512 | ||
2513 | ixgbevf_napi_disable_all(adapter); | |
2514 | ||
9ac5c5cc | 2515 | del_timer_sync(&adapter->service_timer); |
92915f71 GR |
2516 | |
2517 | /* disable transmits in the hardware now that interrupts are off */ | |
2518 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
de02decb DS |
2519 | u8 reg_idx = adapter->tx_ring[i]->reg_idx; |
2520 | ||
2521 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(reg_idx), | |
2522 | IXGBE_TXDCTL_SWFLSH); | |
92915f71 GR |
2523 | } |
2524 | ||
21092e9c TN |
2525 | for (i = 0; i < adapter->num_xdp_queues; i++) { |
2526 | u8 reg_idx = adapter->xdp_ring[i]->reg_idx; | |
2527 | ||
2528 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(reg_idx), | |
2529 | IXGBE_TXDCTL_SWFLSH); | |
2530 | } | |
2531 | ||
92915f71 GR |
2532 | if (!pci_channel_offline(adapter->pdev)) |
2533 | ixgbevf_reset(adapter); | |
2534 | ||
2535 | ixgbevf_clean_all_tx_rings(adapter); | |
2536 | ixgbevf_clean_all_rx_rings(adapter); | |
2537 | } | |
2538 | ||
2539 | void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter) | |
2540 | { | |
92915f71 GR |
2541 | while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state)) |
2542 | msleep(1); | |
2543 | ||
4b2cd27f | 2544 | ixgbevf_down(adapter); |
d7cb9da1 | 2545 | pci_set_master(adapter->pdev); |
4b2cd27f | 2546 | ixgbevf_up(adapter); |
92915f71 GR |
2547 | |
2548 | clear_bit(__IXGBEVF_RESETTING, &adapter->state); | |
2549 | } | |
2550 | ||
2551 | void ixgbevf_reset(struct ixgbevf_adapter *adapter) | |
2552 | { | |
2553 | struct ixgbe_hw *hw = &adapter->hw; | |
2554 | struct net_device *netdev = adapter->netdev; | |
2555 | ||
798e381a | 2556 | if (hw->mac.ops.reset_hw(hw)) { |
92915f71 | 2557 | hw_dbg(hw, "PF still resetting\n"); |
798e381a | 2558 | } else { |
92915f71 | 2559 | hw->mac.ops.init_hw(hw); |
798e381a DS |
2560 | ixgbevf_negotiate_api(adapter); |
2561 | } | |
92915f71 GR |
2562 | |
2563 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
f3956ebb | 2564 | eth_hw_addr_set(netdev, adapter->hw.mac.addr); |
91a76baa | 2565 | ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); |
92915f71 | 2566 | } |
e66c92ad ET |
2567 | |
2568 | adapter->last_reset = jiffies; | |
92915f71 GR |
2569 | } |
2570 | ||
e45dd5fe JK |
2571 | static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter, |
2572 | int vectors) | |
92915f71 | 2573 | { |
a5f9337b | 2574 | int vector_threshold; |
92915f71 | 2575 | |
fa71ae27 AD |
2576 | /* We'll want at least 2 (vector_threshold): |
2577 | * 1) TxQ[0] + RxQ[0] handler | |
2578 | * 2) Other (Link Status Change, etc.) | |
92915f71 GR |
2579 | */ |
2580 | vector_threshold = MIN_MSIX_COUNT; | |
2581 | ||
2582 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
2583 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
2584 | * Right now, we simply care about how many we'll get; we'll | |
2585 | * set them up later while requesting irq's. | |
2586 | */ | |
5c1e3588 AG |
2587 | vectors = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
2588 | vector_threshold, vectors); | |
92915f71 | 2589 | |
5c1e3588 | 2590 | if (vectors < 0) { |
e45dd5fe JK |
2591 | dev_err(&adapter->pdev->dev, |
2592 | "Unable to allocate MSI-X interrupts\n"); | |
92915f71 GR |
2593 | kfree(adapter->msix_entries); |
2594 | adapter->msix_entries = NULL; | |
5c1e3588 | 2595 | return vectors; |
92915f71 | 2596 | } |
dee847f5 | 2597 | |
5c1e3588 AG |
2598 | /* Adjust for only the vectors we'll use, which is minimum |
2599 | * of max_msix_q_vectors + NON_Q_VECTORS, or the number of | |
2600 | * vectors we were allocated. | |
2601 | */ | |
2602 | adapter->num_msix_vectors = vectors; | |
2603 | ||
2604 | return 0; | |
92915f71 GR |
2605 | } |
2606 | ||
49ce9c2c BH |
2607 | /** |
2608 | * ixgbevf_set_num_queues - Allocate queues for device, feature dependent | |
92915f71 GR |
2609 | * @adapter: board private structure to initialize |
2610 | * | |
2611 | * This is the top level queue allocation routine. The order here is very | |
2612 | * important, starting with the "most" number of features turned on at once, | |
2613 | * and ending with the smallest set of features. This way large combinations | |
2614 | * can be allocated if they're turned on, and smaller combinations are the | |
5463fce6 | 2615 | * fall through conditions. |
92915f71 GR |
2616 | * |
2617 | **/ | |
2618 | static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter) | |
2619 | { | |
220fe050 DS |
2620 | struct ixgbe_hw *hw = &adapter->hw; |
2621 | unsigned int def_q = 0; | |
2622 | unsigned int num_tcs = 0; | |
2623 | int err; | |
2624 | ||
92915f71 GR |
2625 | /* Start with base case */ |
2626 | adapter->num_rx_queues = 1; | |
2627 | adapter->num_tx_queues = 1; | |
21092e9c | 2628 | adapter->num_xdp_queues = 0; |
220fe050 DS |
2629 | |
2630 | spin_lock_bh(&adapter->mbx_lock); | |
2631 | ||
2632 | /* fetch queue configuration from the PF */ | |
2633 | err = ixgbevf_get_queues(hw, &num_tcs, &def_q); | |
2634 | ||
2635 | spin_unlock_bh(&adapter->mbx_lock); | |
2636 | ||
2637 | if (err) | |
2638 | return; | |
2639 | ||
2640 | /* we need as many queues as traffic classes */ | |
2dc571aa | 2641 | if (num_tcs > 1) { |
220fe050 | 2642 | adapter->num_rx_queues = num_tcs; |
2dc571aa ET |
2643 | } else { |
2644 | u16 rss = min_t(u16, num_online_cpus(), IXGBEVF_MAX_RSS_QUEUES); | |
2645 | ||
2646 | switch (hw->api_version) { | |
2647 | case ixgbe_mbox_api_11: | |
94cf66f8 | 2648 | case ixgbe_mbox_api_12: |
41e544cd | 2649 | case ixgbe_mbox_api_13: |
7f68d430 | 2650 | case ixgbe_mbox_api_14: |
339f2896 | 2651 | case ixgbe_mbox_api_15: |
21092e9c TN |
2652 | if (adapter->xdp_prog && |
2653 | hw->mac.max_tx_queues == rss) | |
2654 | rss = rss > 3 ? 2 : 1; | |
2655 | ||
2dc571aa ET |
2656 | adapter->num_rx_queues = rss; |
2657 | adapter->num_tx_queues = rss; | |
21092e9c | 2658 | adapter->num_xdp_queues = adapter->xdp_prog ? rss : 0; |
d8f0c306 | 2659 | break; |
2dc571aa ET |
2660 | default: |
2661 | break; | |
2662 | } | |
2663 | } | |
92915f71 GR |
2664 | } |
2665 | ||
2666 | /** | |
21c046e4 ET |
2667 | * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported |
2668 | * @adapter: board private structure to initialize | |
2669 | * | |
2670 | * Attempt to configure the interrupts using the best available | |
2671 | * capabilities of the hardware and the kernel. | |
2672 | **/ | |
2673 | static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2674 | { | |
2675 | int vector, v_budget; | |
2676 | ||
2677 | /* It's easy to be greedy for MSI-X vectors, but it really | |
2678 | * doesn't do us much good if we have a lot more vectors | |
2679 | * than CPU's. So let's be conservative and only ask for | |
2680 | * (roughly) the same number of vectors as there are CPU's. | |
2681 | * The default is to use pairs of vectors. | |
2682 | */ | |
2683 | v_budget = max(adapter->num_rx_queues, adapter->num_tx_queues); | |
2684 | v_budget = min_t(int, v_budget, num_online_cpus()); | |
2685 | v_budget += NON_Q_VECTORS; | |
2686 | ||
2687 | adapter->msix_entries = kcalloc(v_budget, | |
2688 | sizeof(struct msix_entry), GFP_KERNEL); | |
2689 | if (!adapter->msix_entries) | |
2690 | return -ENOMEM; | |
2691 | ||
2692 | for (vector = 0; vector < v_budget; vector++) | |
2693 | adapter->msix_entries[vector].entry = vector; | |
2694 | ||
2695 | /* A failure in MSI-X entry allocation isn't fatal, but the VF driver | |
2696 | * does not support any other modes, so we will simply fail here. Note | |
2697 | * that we clean up the msix_entries pointer else-where. | |
2698 | */ | |
2699 | return ixgbevf_acquire_msix_vectors(adapter, v_budget); | |
2700 | } | |
2701 | ||
2702 | static void ixgbevf_add_ring(struct ixgbevf_ring *ring, | |
2703 | struct ixgbevf_ring_container *head) | |
2704 | { | |
2705 | ring->next = head->ring; | |
2706 | head->ring = ring; | |
2707 | head->count++; | |
2708 | } | |
2709 | ||
2710 | /** | |
2711 | * ixgbevf_alloc_q_vector - Allocate memory for a single interrupt vector | |
92915f71 | 2712 | * @adapter: board private structure to initialize |
21c046e4 ET |
2713 | * @v_idx: index of vector in adapter struct |
2714 | * @txr_count: number of Tx rings for q vector | |
2715 | * @txr_idx: index of first Tx ring to assign | |
21092e9c TN |
2716 | * @xdp_count: total number of XDP rings to allocate |
2717 | * @xdp_idx: index of first XDP ring to allocate | |
21c046e4 ET |
2718 | * @rxr_count: number of Rx rings for q vector |
2719 | * @rxr_idx: index of first Rx ring to assign | |
92915f71 | 2720 | * |
21c046e4 | 2721 | * We allocate one q_vector. If allocation fails we return -ENOMEM. |
92915f71 | 2722 | **/ |
21c046e4 ET |
2723 | static int ixgbevf_alloc_q_vector(struct ixgbevf_adapter *adapter, int v_idx, |
2724 | int txr_count, int txr_idx, | |
21092e9c | 2725 | int xdp_count, int xdp_idx, |
21c046e4 | 2726 | int rxr_count, int rxr_idx) |
92915f71 | 2727 | { |
21c046e4 | 2728 | struct ixgbevf_q_vector *q_vector; |
21092e9c | 2729 | int reg_idx = txr_idx + xdp_idx; |
87e70ab9 | 2730 | struct ixgbevf_ring *ring; |
21c046e4 ET |
2731 | int ring_count, size; |
2732 | ||
21092e9c | 2733 | ring_count = txr_count + xdp_count + rxr_count; |
21c046e4 ET |
2734 | size = sizeof(*q_vector) + (sizeof(*ring) * ring_count); |
2735 | ||
2736 | /* allocate q_vector and rings */ | |
2737 | q_vector = kzalloc(size, GFP_KERNEL); | |
2738 | if (!q_vector) | |
2739 | return -ENOMEM; | |
2740 | ||
2741 | /* initialize NAPI */ | |
b48b89f9 | 2742 | netif_napi_add(adapter->netdev, &q_vector->napi, ixgbevf_poll); |
21c046e4 ET |
2743 | |
2744 | /* tie q_vector and adapter together */ | |
2745 | adapter->q_vector[v_idx] = q_vector; | |
2746 | q_vector->adapter = adapter; | |
2747 | q_vector->v_idx = v_idx; | |
92915f71 | 2748 | |
21c046e4 ET |
2749 | /* initialize pointer to rings */ |
2750 | ring = q_vector->ring; | |
92915f71 | 2751 | |
21c046e4 ET |
2752 | while (txr_count) { |
2753 | /* assign generic ring traits */ | |
87e70ab9 DS |
2754 | ring->dev = &adapter->pdev->dev; |
2755 | ring->netdev = adapter->netdev; | |
21c046e4 ET |
2756 | |
2757 | /* configure backlink on ring */ | |
2758 | ring->q_vector = q_vector; | |
2759 | ||
2760 | /* update q_vector Tx values */ | |
2761 | ixgbevf_add_ring(ring, &q_vector->tx); | |
2762 | ||
2763 | /* apply Tx specific ring traits */ | |
87e70ab9 | 2764 | ring->count = adapter->tx_ring_count; |
21c046e4 | 2765 | ring->queue_index = txr_idx; |
21092e9c | 2766 | ring->reg_idx = reg_idx; |
92915f71 | 2767 | |
21c046e4 | 2768 | /* assign ring to adapter */ |
c6fbfdcb | 2769 | adapter->tx_ring[txr_idx] = ring; |
21c046e4 ET |
2770 | |
2771 | /* update count and index */ | |
2772 | txr_count--; | |
2773 | txr_idx++; | |
21092e9c TN |
2774 | reg_idx++; |
2775 | ||
2776 | /* push pointer to next ring */ | |
2777 | ring++; | |
2778 | } | |
2779 | ||
2780 | while (xdp_count) { | |
2781 | /* assign generic ring traits */ | |
2782 | ring->dev = &adapter->pdev->dev; | |
2783 | ring->netdev = adapter->netdev; | |
2784 | ||
2785 | /* configure backlink on ring */ | |
2786 | ring->q_vector = q_vector; | |
2787 | ||
2788 | /* update q_vector Tx values */ | |
2789 | ixgbevf_add_ring(ring, &q_vector->tx); | |
2790 | ||
2791 | /* apply Tx specific ring traits */ | |
2792 | ring->count = adapter->tx_ring_count; | |
2793 | ring->queue_index = xdp_idx; | |
2794 | ring->reg_idx = reg_idx; | |
2795 | set_ring_xdp(ring); | |
2796 | ||
2797 | /* assign ring to adapter */ | |
2798 | adapter->xdp_ring[xdp_idx] = ring; | |
2799 | ||
2800 | /* update count and index */ | |
2801 | xdp_count--; | |
2802 | xdp_idx++; | |
2803 | reg_idx++; | |
92915f71 | 2804 | |
21c046e4 ET |
2805 | /* push pointer to next ring */ |
2806 | ring++; | |
2807 | } | |
87e70ab9 | 2808 | |
21c046e4 ET |
2809 | while (rxr_count) { |
2810 | /* assign generic ring traits */ | |
87e70ab9 DS |
2811 | ring->dev = &adapter->pdev->dev; |
2812 | ring->netdev = adapter->netdev; | |
2813 | ||
21c046e4 ET |
2814 | /* configure backlink on ring */ |
2815 | ring->q_vector = q_vector; | |
2816 | ||
2817 | /* update q_vector Rx values */ | |
2818 | ixgbevf_add_ring(ring, &q_vector->rx); | |
2819 | ||
2820 | /* apply Rx specific ring traits */ | |
87e70ab9 | 2821 | ring->count = adapter->rx_ring_count; |
21c046e4 ET |
2822 | ring->queue_index = rxr_idx; |
2823 | ring->reg_idx = rxr_idx; | |
87e70ab9 | 2824 | |
21c046e4 ET |
2825 | /* assign ring to adapter */ |
2826 | adapter->rx_ring[rxr_idx] = ring; | |
92915f71 | 2827 | |
21c046e4 ET |
2828 | /* update count and index */ |
2829 | rxr_count--; | |
2830 | rxr_idx++; | |
92915f71 | 2831 | |
21c046e4 ET |
2832 | /* push pointer to next ring */ |
2833 | ring++; | |
87e70ab9 DS |
2834 | } |
2835 | ||
21c046e4 | 2836 | return 0; |
92915f71 GR |
2837 | } |
2838 | ||
2839 | /** | |
21c046e4 | 2840 | * ixgbevf_free_q_vector - Free memory allocated for specific interrupt vector |
92915f71 | 2841 | * @adapter: board private structure to initialize |
21c046e4 | 2842 | * @v_idx: index of vector in adapter struct |
92915f71 | 2843 | * |
21c046e4 ET |
2844 | * This function frees the memory allocated to the q_vector. In addition if |
2845 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
2846 | * to freeing the q_vector. | |
92915f71 | 2847 | **/ |
21c046e4 | 2848 | static void ixgbevf_free_q_vector(struct ixgbevf_adapter *adapter, int v_idx) |
92915f71 | 2849 | { |
21c046e4 ET |
2850 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[v_idx]; |
2851 | struct ixgbevf_ring *ring; | |
92915f71 | 2852 | |
21092e9c TN |
2853 | ixgbevf_for_each_ring(ring, q_vector->tx) { |
2854 | if (ring_is_xdp(ring)) | |
2855 | adapter->xdp_ring[ring->queue_index] = NULL; | |
2856 | else | |
2857 | adapter->tx_ring[ring->queue_index] = NULL; | |
2858 | } | |
92915f71 | 2859 | |
21c046e4 ET |
2860 | ixgbevf_for_each_ring(ring, q_vector->rx) |
2861 | adapter->rx_ring[ring->queue_index] = NULL; | |
92915f71 | 2862 | |
21c046e4 ET |
2863 | adapter->q_vector[v_idx] = NULL; |
2864 | netif_napi_del(&q_vector->napi); | |
92915f71 | 2865 | |
21c046e4 ET |
2866 | /* ixgbevf_get_stats() might access the rings on this vector, |
2867 | * we must wait a grace period before freeing it. | |
2868 | */ | |
2869 | kfree_rcu(q_vector, rcu); | |
92915f71 GR |
2870 | } |
2871 | ||
2872 | /** | |
2873 | * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors | |
2874 | * @adapter: board private structure to initialize | |
2875 | * | |
2876 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
2877 | * return -ENOMEM. | |
2878 | **/ | |
2879 | static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter) | |
2880 | { | |
21c046e4 ET |
2881 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
2882 | int rxr_remaining = adapter->num_rx_queues; | |
2883 | int txr_remaining = adapter->num_tx_queues; | |
21092e9c TN |
2884 | int xdp_remaining = adapter->num_xdp_queues; |
2885 | int rxr_idx = 0, txr_idx = 0, xdp_idx = 0, v_idx = 0; | |
21c046e4 ET |
2886 | int err; |
2887 | ||
21092e9c | 2888 | if (q_vectors >= (rxr_remaining + txr_remaining + xdp_remaining)) { |
21c046e4 ET |
2889 | for (; rxr_remaining; v_idx++, q_vectors--) { |
2890 | int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors); | |
2891 | ||
2892 | err = ixgbevf_alloc_q_vector(adapter, v_idx, | |
21092e9c | 2893 | 0, 0, 0, 0, rqpv, rxr_idx); |
21c046e4 ET |
2894 | if (err) |
2895 | goto err_out; | |
2896 | ||
2897 | /* update counts and index */ | |
2898 | rxr_remaining -= rqpv; | |
2899 | rxr_idx += rqpv; | |
2900 | } | |
2901 | } | |
2902 | ||
2903 | for (; q_vectors; v_idx++, q_vectors--) { | |
2904 | int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors); | |
2905 | int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors); | |
21092e9c | 2906 | int xqpv = DIV_ROUND_UP(xdp_remaining, q_vectors); |
92915f71 | 2907 | |
21c046e4 ET |
2908 | err = ixgbevf_alloc_q_vector(adapter, v_idx, |
2909 | tqpv, txr_idx, | |
21092e9c | 2910 | xqpv, xdp_idx, |
21c046e4 | 2911 | rqpv, rxr_idx); |
92915f71 | 2912 | |
21c046e4 | 2913 | if (err) |
92915f71 | 2914 | goto err_out; |
21c046e4 ET |
2915 | |
2916 | /* update counts and index */ | |
2917 | rxr_remaining -= rqpv; | |
2918 | rxr_idx += rqpv; | |
2919 | txr_remaining -= tqpv; | |
2920 | txr_idx += tqpv; | |
21092e9c TN |
2921 | xdp_remaining -= xqpv; |
2922 | xdp_idx += xqpv; | |
92915f71 GR |
2923 | } |
2924 | ||
2925 | return 0; | |
2926 | ||
2927 | err_out: | |
21c046e4 ET |
2928 | while (v_idx) { |
2929 | v_idx--; | |
2930 | ixgbevf_free_q_vector(adapter, v_idx); | |
92915f71 | 2931 | } |
21c046e4 | 2932 | |
92915f71 GR |
2933 | return -ENOMEM; |
2934 | } | |
2935 | ||
2936 | /** | |
2937 | * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors | |
2938 | * @adapter: board private structure to initialize | |
2939 | * | |
2940 | * This function frees the memory allocated to the q_vectors. In addition if | |
2941 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
2942 | * to freeing the q_vector. | |
2943 | **/ | |
2944 | static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter) | |
2945 | { | |
21c046e4 | 2946 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
92915f71 | 2947 | |
21c046e4 ET |
2948 | while (q_vectors) { |
2949 | q_vectors--; | |
2950 | ixgbevf_free_q_vector(adapter, q_vectors); | |
92915f71 GR |
2951 | } |
2952 | } | |
2953 | ||
2954 | /** | |
2955 | * ixgbevf_reset_interrupt_capability - Reset MSIX setup | |
2956 | * @adapter: board private structure | |
2957 | * | |
2958 | **/ | |
2959 | static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2960 | { | |
eeffceee MR |
2961 | if (!adapter->msix_entries) |
2962 | return; | |
2963 | ||
92915f71 GR |
2964 | pci_disable_msix(adapter->pdev); |
2965 | kfree(adapter->msix_entries); | |
2966 | adapter->msix_entries = NULL; | |
92915f71 GR |
2967 | } |
2968 | ||
2969 | /** | |
2970 | * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init | |
2971 | * @adapter: board private structure to initialize | |
2972 | * | |
2973 | **/ | |
2974 | static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter) | |
2975 | { | |
2976 | int err; | |
2977 | ||
2978 | /* Number of supported queues */ | |
2979 | ixgbevf_set_num_queues(adapter); | |
2980 | ||
2981 | err = ixgbevf_set_interrupt_capability(adapter); | |
2982 | if (err) { | |
2983 | hw_dbg(&adapter->hw, | |
2984 | "Unable to setup interrupt capabilities\n"); | |
2985 | goto err_set_interrupt; | |
2986 | } | |
2987 | ||
2988 | err = ixgbevf_alloc_q_vectors(adapter); | |
2989 | if (err) { | |
dec0d8e4 | 2990 | hw_dbg(&adapter->hw, "Unable to allocate memory for queue vectors\n"); |
92915f71 GR |
2991 | goto err_alloc_q_vectors; |
2992 | } | |
2993 | ||
21092e9c TN |
2994 | hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u XDP Queue count %u\n", |
2995 | (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled", | |
2996 | adapter->num_rx_queues, adapter->num_tx_queues, | |
2997 | adapter->num_xdp_queues); | |
92915f71 GR |
2998 | |
2999 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
3000 | ||
3001 | return 0; | |
92915f71 GR |
3002 | err_alloc_q_vectors: |
3003 | ixgbevf_reset_interrupt_capability(adapter); | |
3004 | err_set_interrupt: | |
3005 | return err; | |
3006 | } | |
3007 | ||
0ac1e8ce AD |
3008 | /** |
3009 | * ixgbevf_clear_interrupt_scheme - Clear the current interrupt scheme settings | |
3010 | * @adapter: board private structure to clear interrupt scheme on | |
3011 | * | |
3012 | * We go through and clear interrupt specific resources and reset the structure | |
3013 | * to pre-load conditions | |
3014 | **/ | |
3015 | static void ixgbevf_clear_interrupt_scheme(struct ixgbevf_adapter *adapter) | |
3016 | { | |
3017 | adapter->num_tx_queues = 0; | |
21092e9c | 3018 | adapter->num_xdp_queues = 0; |
0ac1e8ce AD |
3019 | adapter->num_rx_queues = 0; |
3020 | ||
3021 | ixgbevf_free_q_vectors(adapter); | |
3022 | ixgbevf_reset_interrupt_capability(adapter); | |
3023 | } | |
3024 | ||
92915f71 GR |
3025 | /** |
3026 | * ixgbevf_sw_init - Initialize general software structures | |
92915f71 GR |
3027 | * @adapter: board private structure to initialize |
3028 | * | |
3029 | * ixgbevf_sw_init initializes the Adapter private data structure. | |
3030 | * Fields are initialized based on PCI device information and | |
3031 | * OS network device settings (MTU size). | |
3032 | **/ | |
9f9a12f8 | 3033 | static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter) |
92915f71 GR |
3034 | { |
3035 | struct ixgbe_hw *hw = &adapter->hw; | |
3036 | struct pci_dev *pdev = adapter->pdev; | |
e1941a74 | 3037 | struct net_device *netdev = adapter->netdev; |
92915f71 GR |
3038 | int err; |
3039 | ||
3040 | /* PCI config space info */ | |
92915f71 GR |
3041 | hw->vendor_id = pdev->vendor; |
3042 | hw->device_id = pdev->device; | |
ff938e43 | 3043 | hw->revision_id = pdev->revision; |
92915f71 GR |
3044 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
3045 | hw->subsystem_device_id = pdev->subsystem_device; | |
3046 | ||
3047 | hw->mbx.ops.init_params(hw); | |
56e94095 | 3048 | |
e60ae003 TN |
3049 | if (hw->mac.type >= ixgbe_mac_X550_vf) { |
3050 | err = ixgbevf_init_rss_key(adapter); | |
3051 | if (err) | |
3052 | goto out; | |
3053 | } | |
3054 | ||
56e94095 AD |
3055 | /* assume legacy case in which PF would only give VF 2 queues */ |
3056 | hw->mac.max_tx_queues = 2; | |
3057 | hw->mac.max_rx_queues = 2; | |
3058 | ||
798e381a DS |
3059 | /* lock to protect mailbox accesses */ |
3060 | spin_lock_init(&adapter->mbx_lock); | |
3061 | ||
92915f71 GR |
3062 | err = hw->mac.ops.reset_hw(hw); |
3063 | if (err) { | |
3064 | dev_info(&pdev->dev, | |
e1941a74 | 3065 | "PF still in reset state. Is the PF interface up?\n"); |
92915f71 GR |
3066 | } else { |
3067 | err = hw->mac.ops.init_hw(hw); | |
3068 | if (err) { | |
dbd9636e | 3069 | pr_err("init_shared_code failed: %d\n", err); |
92915f71 GR |
3070 | goto out; |
3071 | } | |
798e381a | 3072 | ixgbevf_negotiate_api(adapter); |
e1941a74 GR |
3073 | err = hw->mac.ops.get_mac_addr(hw, hw->mac.addr); |
3074 | if (err) | |
3075 | dev_info(&pdev->dev, "Error reading MAC address\n"); | |
3076 | else if (is_zero_ether_addr(adapter->hw.mac.addr)) | |
3077 | dev_info(&pdev->dev, | |
3078 | "MAC address not assigned by administrator.\n"); | |
f3956ebb | 3079 | eth_hw_addr_set(netdev, hw->mac.addr); |
e1941a74 GR |
3080 | } |
3081 | ||
3082 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
3083 | dev_info(&pdev->dev, "Assigning random MAC address\n"); | |
3084 | eth_hw_addr_random(netdev); | |
91a76baa | 3085 | ether_addr_copy(hw->mac.addr, netdev->dev_addr); |
465fc643 | 3086 | ether_addr_copy(hw->mac.perm_addr, netdev->dev_addr); |
92915f71 GR |
3087 | } |
3088 | ||
3089 | /* Enable dynamic interrupt throttling rates */ | |
5f3600eb AD |
3090 | adapter->rx_itr_setting = 1; |
3091 | adapter->tx_itr_setting = 1; | |
92915f71 | 3092 | |
92915f71 GR |
3093 | /* set default ring sizes */ |
3094 | adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD; | |
3095 | adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD; | |
3096 | ||
443ebdd6 SM |
3097 | adapter->link_state = true; |
3098 | ||
92915f71 | 3099 | set_bit(__IXGBEVF_DOWN, &adapter->state); |
1a0d6ae5 | 3100 | return 0; |
92915f71 GR |
3101 | |
3102 | out: | |
3103 | return err; | |
3104 | } | |
3105 | ||
92915f71 GR |
3106 | #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \ |
3107 | { \ | |
3108 | u32 current_counter = IXGBE_READ_REG(hw, reg); \ | |
3109 | if (current_counter < last_counter) \ | |
3110 | counter += 0x100000000LL; \ | |
3111 | last_counter = current_counter; \ | |
3112 | counter &= 0xFFFFFFFF00000000LL; \ | |
3113 | counter |= current_counter; \ | |
3114 | } | |
3115 | ||
3116 | #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \ | |
3117 | { \ | |
3118 | u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \ | |
3119 | u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \ | |
dec0d8e4 JK |
3120 | u64 current_counter = (current_counter_msb << 32) | \ |
3121 | current_counter_lsb; \ | |
92915f71 GR |
3122 | if (current_counter < last_counter) \ |
3123 | counter += 0x1000000000LL; \ | |
3124 | last_counter = current_counter; \ | |
3125 | counter &= 0xFFFFFFF000000000LL; \ | |
3126 | counter |= current_counter; \ | |
3127 | } | |
3128 | /** | |
3129 | * ixgbevf_update_stats - Update the board statistics counters. | |
3130 | * @adapter: board private structure | |
3131 | **/ | |
3132 | void ixgbevf_update_stats(struct ixgbevf_adapter *adapter) | |
3133 | { | |
3134 | struct ixgbe_hw *hw = &adapter->hw; | |
2a35efe5 ET |
3135 | u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; |
3136 | u64 alloc_rx_page = 0, hw_csum_rx_error = 0; | |
55fb277c | 3137 | int i; |
92915f71 | 3138 | |
e66c92ad ET |
3139 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || |
3140 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
088245a3 GR |
3141 | return; |
3142 | ||
92915f71 GR |
3143 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc, |
3144 | adapter->stats.vfgprc); | |
3145 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc, | |
3146 | adapter->stats.vfgptc); | |
3147 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB, | |
3148 | adapter->stats.last_vfgorc, | |
3149 | adapter->stats.vfgorc); | |
3150 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB, | |
3151 | adapter->stats.last_vfgotc, | |
3152 | adapter->stats.vfgotc); | |
3153 | UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc, | |
3154 | adapter->stats.vfmprc); | |
55fb277c GR |
3155 | |
3156 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2a35efe5 ET |
3157 | struct ixgbevf_ring *rx_ring = adapter->rx_ring[i]; |
3158 | ||
3159 | hw_csum_rx_error += rx_ring->rx_stats.csum_err; | |
3160 | alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; | |
3161 | alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; | |
3162 | alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; | |
55fb277c | 3163 | } |
2a35efe5 ET |
3164 | |
3165 | adapter->hw_csum_rx_error = hw_csum_rx_error; | |
3166 | adapter->alloc_rx_page_failed = alloc_rx_page_failed; | |
3167 | adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; | |
3168 | adapter->alloc_rx_page = alloc_rx_page; | |
92915f71 GR |
3169 | } |
3170 | ||
3171 | /** | |
9ac5c5cc | 3172 | * ixgbevf_service_timer - Timer Call-back |
e23cf38f | 3173 | * @t: pointer to timer_list struct |
92915f71 | 3174 | **/ |
26566eae | 3175 | static void ixgbevf_service_timer(struct timer_list *t) |
92915f71 | 3176 | { |
26566eae KC |
3177 | struct ixgbevf_adapter *adapter = from_timer(adapter, t, |
3178 | service_timer); | |
e66c92ad | 3179 | |
9ac5c5cc ET |
3180 | /* Reset the timer */ |
3181 | mod_timer(&adapter->service_timer, (HZ * 2) + jiffies); | |
3182 | ||
3183 | ixgbevf_service_event_schedule(adapter); | |
e66c92ad ET |
3184 | } |
3185 | ||
9ac5c5cc | 3186 | static void ixgbevf_reset_subtask(struct ixgbevf_adapter *adapter) |
e66c92ad | 3187 | { |
d5dd7c3f | 3188 | if (!test_and_clear_bit(__IXGBEVF_RESET_REQUESTED, &adapter->state)) |
9ac5c5cc | 3189 | return; |
e66c92ad | 3190 | |
7d6446db | 3191 | rtnl_lock(); |
e66c92ad ET |
3192 | /* If we're already down or resetting, just bail */ |
3193 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
6e469ed0 | 3194 | test_bit(__IXGBEVF_REMOVING, &adapter->state) || |
7d6446db ET |
3195 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) { |
3196 | rtnl_unlock(); | |
e66c92ad | 3197 | return; |
7d6446db | 3198 | } |
e66c92ad ET |
3199 | |
3200 | adapter->tx_timeout_count++; | |
3201 | ||
3202 | ixgbevf_reinit_locked(adapter); | |
8e8247ab | 3203 | rtnl_unlock(); |
e66c92ad ET |
3204 | } |
3205 | ||
dec0d8e4 JK |
3206 | /** |
3207 | * ixgbevf_check_hang_subtask - check for hung queues and dropped interrupts | |
3208 | * @adapter: pointer to the device adapter structure | |
e66c92ad ET |
3209 | * |
3210 | * This function serves two purposes. First it strobes the interrupt lines | |
3211 | * in order to make certain interrupts are occurring. Secondly it sets the | |
3212 | * bits needed to check for TX hangs. As a result we should immediately | |
3213 | * determine if a hang has occurred. | |
dec0d8e4 | 3214 | **/ |
e66c92ad ET |
3215 | static void ixgbevf_check_hang_subtask(struct ixgbevf_adapter *adapter) |
3216 | { | |
92915f71 | 3217 | struct ixgbe_hw *hw = &adapter->hw; |
5f3600eb | 3218 | u32 eics = 0; |
92915f71 GR |
3219 | int i; |
3220 | ||
e66c92ad ET |
3221 | /* If we're down or resetting, just bail */ |
3222 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
3223 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
3224 | return; | |
92915f71 | 3225 | |
e08400b7 ET |
3226 | /* Force detection of hung controller */ |
3227 | if (netif_carrier_ok(adapter->netdev)) { | |
3228 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3229 | set_check_for_tx_hang(adapter->tx_ring[i]); | |
21092e9c TN |
3230 | for (i = 0; i < adapter->num_xdp_queues; i++) |
3231 | set_check_for_tx_hang(adapter->xdp_ring[i]); | |
e08400b7 ET |
3232 | } |
3233 | ||
dec0d8e4 | 3234 | /* get one bit for every active Tx/Rx interrupt vector */ |
92915f71 GR |
3235 | for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) { |
3236 | struct ixgbevf_q_vector *qv = adapter->q_vector[i]; | |
9ac5c5cc | 3237 | |
6b43c446 | 3238 | if (qv->rx.ring || qv->tx.ring) |
8d055cc0 | 3239 | eics |= BIT(i); |
92915f71 GR |
3240 | } |
3241 | ||
e66c92ad | 3242 | /* Cause software interrupt to ensure rings are cleaned */ |
5f3600eb | 3243 | IXGBE_WRITE_REG(hw, IXGBE_VTEICS, eics); |
e66c92ad | 3244 | } |
92915f71 | 3245 | |
e66c92ad ET |
3246 | /** |
3247 | * ixgbevf_watchdog_update_link - update the link status | |
dec0d8e4 | 3248 | * @adapter: pointer to the device adapter structure |
e66c92ad ET |
3249 | **/ |
3250 | static void ixgbevf_watchdog_update_link(struct ixgbevf_adapter *adapter) | |
3251 | { | |
3252 | struct ixgbe_hw *hw = &adapter->hw; | |
3253 | u32 link_speed = adapter->link_speed; | |
3254 | bool link_up = adapter->link_up; | |
3255 | s32 err; | |
3256 | ||
3257 | spin_lock_bh(&adapter->mbx_lock); | |
3258 | ||
3259 | err = hw->mac.ops.check_link(hw, &link_speed, &link_up, false); | |
3260 | ||
3261 | spin_unlock_bh(&adapter->mbx_lock); | |
3262 | ||
3263 | /* if check for link returns error we will need to reset */ | |
3264 | if (err && time_after(jiffies, adapter->last_reset + (10 * HZ))) { | |
d5dd7c3f | 3265 | set_bit(__IXGBEVF_RESET_REQUESTED, &adapter->state); |
e66c92ad ET |
3266 | link_up = false; |
3267 | } | |
3268 | ||
3269 | adapter->link_up = link_up; | |
3270 | adapter->link_speed = link_speed; | |
92915f71 GR |
3271 | } |
3272 | ||
e66c92ad ET |
3273 | /** |
3274 | * ixgbevf_watchdog_link_is_up - update netif_carrier status and | |
3275 | * print link up message | |
dec0d8e4 | 3276 | * @adapter: pointer to the device adapter structure |
e66c92ad ET |
3277 | **/ |
3278 | static void ixgbevf_watchdog_link_is_up(struct ixgbevf_adapter *adapter) | |
92915f71 | 3279 | { |
e66c92ad | 3280 | struct net_device *netdev = adapter->netdev; |
92915f71 | 3281 | |
e66c92ad ET |
3282 | /* only continue if link was previously down */ |
3283 | if (netif_carrier_ok(netdev)) | |
92915f71 GR |
3284 | return; |
3285 | ||
e66c92ad ET |
3286 | dev_info(&adapter->pdev->dev, "NIC Link is Up %s\n", |
3287 | (adapter->link_speed == IXGBE_LINK_SPEED_10GB_FULL) ? | |
3288 | "10 Gbps" : | |
3289 | (adapter->link_speed == IXGBE_LINK_SPEED_1GB_FULL) ? | |
3290 | "1 Gbps" : | |
3291 | (adapter->link_speed == IXGBE_LINK_SPEED_100_FULL) ? | |
3292 | "100 Mbps" : | |
3293 | "unknown speed"); | |
92915f71 | 3294 | |
e66c92ad ET |
3295 | netif_carrier_on(netdev); |
3296 | } | |
3297 | ||
3298 | /** | |
3299 | * ixgbevf_watchdog_link_is_down - update netif_carrier status and | |
3300 | * print link down message | |
dec0d8e4 | 3301 | * @adapter: pointer to the adapter structure |
e66c92ad ET |
3302 | **/ |
3303 | static void ixgbevf_watchdog_link_is_down(struct ixgbevf_adapter *adapter) | |
3304 | { | |
3305 | struct net_device *netdev = adapter->netdev; | |
3306 | ||
3307 | adapter->link_speed = 0; | |
3308 | ||
3309 | /* only continue if link was up previously */ | |
3310 | if (!netif_carrier_ok(netdev)) | |
3311 | return; | |
3312 | ||
3313 | dev_info(&adapter->pdev->dev, "NIC Link is Down\n"); | |
3314 | ||
3315 | netif_carrier_off(netdev); | |
92915f71 GR |
3316 | } |
3317 | ||
3318 | /** | |
9ac5c5cc | 3319 | * ixgbevf_watchdog_subtask - worker thread to bring link up |
e23cf38f | 3320 | * @adapter: board private structure |
9ac5c5cc ET |
3321 | **/ |
3322 | static void ixgbevf_watchdog_subtask(struct ixgbevf_adapter *adapter) | |
3323 | { | |
3324 | /* if interface is down do nothing */ | |
3325 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
3326 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
3327 | return; | |
3328 | ||
3329 | ixgbevf_watchdog_update_link(adapter); | |
3330 | ||
443ebdd6 | 3331 | if (adapter->link_up && adapter->link_state) |
9ac5c5cc ET |
3332 | ixgbevf_watchdog_link_is_up(adapter); |
3333 | else | |
3334 | ixgbevf_watchdog_link_is_down(adapter); | |
3335 | ||
3336 | ixgbevf_update_stats(adapter); | |
3337 | } | |
3338 | ||
3339 | /** | |
3340 | * ixgbevf_service_task - manages and runs subtasks | |
92915f71 GR |
3341 | * @work: pointer to work_struct containing our data |
3342 | **/ | |
9ac5c5cc | 3343 | static void ixgbevf_service_task(struct work_struct *work) |
92915f71 GR |
3344 | { |
3345 | struct ixgbevf_adapter *adapter = container_of(work, | |
3346 | struct ixgbevf_adapter, | |
9ac5c5cc | 3347 | service_task); |
92915f71 | 3348 | struct ixgbe_hw *hw = &adapter->hw; |
92915f71 | 3349 | |
26597802 MR |
3350 | if (IXGBE_REMOVED(hw->hw_addr)) { |
3351 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
3352 | rtnl_lock(); | |
3353 | ixgbevf_down(adapter); | |
3354 | rtnl_unlock(); | |
3355 | } | |
3356 | return; | |
3357 | } | |
e66c92ad | 3358 | |
220fe050 | 3359 | ixgbevf_queue_reset_subtask(adapter); |
9ac5c5cc ET |
3360 | ixgbevf_reset_subtask(adapter); |
3361 | ixgbevf_watchdog_subtask(adapter); | |
e66c92ad ET |
3362 | ixgbevf_check_hang_subtask(adapter); |
3363 | ||
9ac5c5cc | 3364 | ixgbevf_service_event_complete(adapter); |
92915f71 GR |
3365 | } |
3366 | ||
3367 | /** | |
3368 | * ixgbevf_free_tx_resources - Free Tx Resources per Queue | |
92915f71 GR |
3369 | * @tx_ring: Tx descriptor ring for a specific queue |
3370 | * | |
3371 | * Free all transmit software resources | |
3372 | **/ | |
05d063aa | 3373 | void ixgbevf_free_tx_resources(struct ixgbevf_ring *tx_ring) |
92915f71 | 3374 | { |
05d063aa | 3375 | ixgbevf_clean_tx_ring(tx_ring); |
92915f71 GR |
3376 | |
3377 | vfree(tx_ring->tx_buffer_info); | |
3378 | tx_ring->tx_buffer_info = NULL; | |
3379 | ||
de02decb DS |
3380 | /* if not set, then don't free */ |
3381 | if (!tx_ring->desc) | |
3382 | return; | |
3383 | ||
05d063aa | 3384 | dma_free_coherent(tx_ring->dev, tx_ring->size, tx_ring->desc, |
2a1f8794 | 3385 | tx_ring->dma); |
92915f71 GR |
3386 | |
3387 | tx_ring->desc = NULL; | |
3388 | } | |
3389 | ||
3390 | /** | |
3391 | * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues | |
3392 | * @adapter: board private structure | |
3393 | * | |
3394 | * Free all transmit software resources | |
3395 | **/ | |
3396 | static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter) | |
3397 | { | |
3398 | int i; | |
3399 | ||
3400 | for (i = 0; i < adapter->num_tx_queues; i++) | |
87e70ab9 | 3401 | if (adapter->tx_ring[i]->desc) |
05d063aa | 3402 | ixgbevf_free_tx_resources(adapter->tx_ring[i]); |
21092e9c TN |
3403 | for (i = 0; i < adapter->num_xdp_queues; i++) |
3404 | if (adapter->xdp_ring[i]->desc) | |
3405 | ixgbevf_free_tx_resources(adapter->xdp_ring[i]); | |
92915f71 GR |
3406 | } |
3407 | ||
3408 | /** | |
3409 | * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors) | |
dec0d8e4 | 3410 | * @tx_ring: Tx descriptor ring (for a specific queue) to setup |
92915f71 GR |
3411 | * |
3412 | * Return 0 on success, negative on failure | |
3413 | **/ | |
05d063aa | 3414 | int ixgbevf_setup_tx_resources(struct ixgbevf_ring *tx_ring) |
92915f71 | 3415 | { |
4ad6af02 | 3416 | struct ixgbevf_adapter *adapter = netdev_priv(tx_ring->netdev); |
92915f71 GR |
3417 | int size; |
3418 | ||
3419 | size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count; | |
865a4d98 | 3420 | tx_ring->tx_buffer_info = vmalloc(size); |
92915f71 GR |
3421 | if (!tx_ring->tx_buffer_info) |
3422 | goto err; | |
92915f71 | 3423 | |
7c3a4626 FF |
3424 | u64_stats_init(&tx_ring->syncp); |
3425 | ||
92915f71 GR |
3426 | /* round up to nearest 4K */ |
3427 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); | |
3428 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
3429 | ||
05d063aa | 3430 | tx_ring->desc = dma_alloc_coherent(tx_ring->dev, tx_ring->size, |
2a1f8794 | 3431 | &tx_ring->dma, GFP_KERNEL); |
92915f71 GR |
3432 | if (!tx_ring->desc) |
3433 | goto err; | |
3434 | ||
92915f71 GR |
3435 | return 0; |
3436 | ||
3437 | err: | |
3438 | vfree(tx_ring->tx_buffer_info); | |
3439 | tx_ring->tx_buffer_info = NULL; | |
dec0d8e4 | 3440 | hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit descriptor ring\n"); |
92915f71 GR |
3441 | return -ENOMEM; |
3442 | } | |
3443 | ||
3444 | /** | |
3445 | * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources | |
3446 | * @adapter: board private structure | |
3447 | * | |
3448 | * If this function returns with an error, then it's possible one or | |
3449 | * more of the rings is populated (while the rest are not). It is the | |
3450 | * callers duty to clean those orphaned rings. | |
3451 | * | |
3452 | * Return 0 on success, negative on failure | |
3453 | **/ | |
3454 | static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter) | |
3455 | { | |
21092e9c | 3456 | int i, j = 0, err = 0; |
92915f71 GR |
3457 | |
3458 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
05d063aa | 3459 | err = ixgbevf_setup_tx_resources(adapter->tx_ring[i]); |
92915f71 GR |
3460 | if (!err) |
3461 | continue; | |
dec0d8e4 | 3462 | hw_dbg(&adapter->hw, "Allocation for Tx Queue %u failed\n", i); |
f2d00eca | 3463 | goto err_setup_tx; |
92915f71 GR |
3464 | } |
3465 | ||
21092e9c TN |
3466 | for (j = 0; j < adapter->num_xdp_queues; j++) { |
3467 | err = ixgbevf_setup_tx_resources(adapter->xdp_ring[j]); | |
3468 | if (!err) | |
3469 | continue; | |
3470 | hw_dbg(&adapter->hw, "Allocation for XDP Queue %u failed\n", j); | |
39035bfd | 3471 | goto err_setup_tx; |
21092e9c TN |
3472 | } |
3473 | ||
f2d00eca ET |
3474 | return 0; |
3475 | err_setup_tx: | |
3476 | /* rewind the index freeing the rings as we go */ | |
21092e9c TN |
3477 | while (j--) |
3478 | ixgbevf_free_tx_resources(adapter->xdp_ring[j]); | |
f2d00eca ET |
3479 | while (i--) |
3480 | ixgbevf_free_tx_resources(adapter->tx_ring[i]); | |
21092e9c | 3481 | |
92915f71 GR |
3482 | return err; |
3483 | } | |
3484 | ||
3485 | /** | |
3486 | * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors) | |
c7aec596 | 3487 | * @adapter: board private structure |
dec0d8e4 | 3488 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup |
92915f71 GR |
3489 | * |
3490 | * Returns 0 on success, negative on failure | |
3491 | **/ | |
c7aec596 TN |
3492 | int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter, |
3493 | struct ixgbevf_ring *rx_ring) | |
92915f71 | 3494 | { |
92915f71 GR |
3495 | int size; |
3496 | ||
3497 | size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count; | |
40b8178b | 3498 | rx_ring->rx_buffer_info = vmalloc(size); |
e404decb | 3499 | if (!rx_ring->rx_buffer_info) |
05d063aa | 3500 | goto err; |
92915f71 | 3501 | |
7c3a4626 FF |
3502 | u64_stats_init(&rx_ring->syncp); |
3503 | ||
92915f71 GR |
3504 | /* Round up to nearest 4K */ |
3505 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); | |
3506 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
3507 | ||
05d063aa | 3508 | rx_ring->desc = dma_alloc_coherent(rx_ring->dev, rx_ring->size, |
2a1f8794 | 3509 | &rx_ring->dma, GFP_KERNEL); |
92915f71 | 3510 | |
05d063aa ET |
3511 | if (!rx_ring->desc) |
3512 | goto err; | |
92915f71 | 3513 | |
c7aec596 TN |
3514 | /* XDP RX-queue info */ |
3515 | if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev, | |
b02e5a0e | 3516 | rx_ring->queue_index, 0) < 0) |
c7aec596 TN |
3517 | goto err; |
3518 | ||
3519 | rx_ring->xdp_prog = adapter->xdp_prog; | |
3520 | ||
92915f71 | 3521 | return 0; |
05d063aa ET |
3522 | err: |
3523 | vfree(rx_ring->rx_buffer_info); | |
3524 | rx_ring->rx_buffer_info = NULL; | |
3525 | dev_err(rx_ring->dev, "Unable to allocate memory for the Rx descriptor ring\n"); | |
92915f71 GR |
3526 | return -ENOMEM; |
3527 | } | |
3528 | ||
3529 | /** | |
3530 | * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources | |
3531 | * @adapter: board private structure | |
3532 | * | |
3533 | * If this function returns with an error, then it's possible one or | |
3534 | * more of the rings is populated (while the rest are not). It is the | |
3535 | * callers duty to clean those orphaned rings. | |
3536 | * | |
3537 | * Return 0 on success, negative on failure | |
3538 | **/ | |
3539 | static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter) | |
3540 | { | |
3541 | int i, err = 0; | |
3542 | ||
3543 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
c7aec596 | 3544 | err = ixgbevf_setup_rx_resources(adapter, adapter->rx_ring[i]); |
92915f71 GR |
3545 | if (!err) |
3546 | continue; | |
dec0d8e4 | 3547 | hw_dbg(&adapter->hw, "Allocation for Rx Queue %u failed\n", i); |
f2d00eca | 3548 | goto err_setup_rx; |
92915f71 | 3549 | } |
f2d00eca ET |
3550 | |
3551 | return 0; | |
3552 | err_setup_rx: | |
3553 | /* rewind the index freeing the rings as we go */ | |
3554 | while (i--) | |
3555 | ixgbevf_free_rx_resources(adapter->rx_ring[i]); | |
92915f71 GR |
3556 | return err; |
3557 | } | |
3558 | ||
3559 | /** | |
3560 | * ixgbevf_free_rx_resources - Free Rx Resources | |
92915f71 GR |
3561 | * @rx_ring: ring to clean the resources from |
3562 | * | |
3563 | * Free all receive software resources | |
3564 | **/ | |
05d063aa | 3565 | void ixgbevf_free_rx_resources(struct ixgbevf_ring *rx_ring) |
92915f71 | 3566 | { |
05d063aa | 3567 | ixgbevf_clean_rx_ring(rx_ring); |
92915f71 | 3568 | |
c7aec596 TN |
3569 | rx_ring->xdp_prog = NULL; |
3570 | xdp_rxq_info_unreg(&rx_ring->xdp_rxq); | |
92915f71 GR |
3571 | vfree(rx_ring->rx_buffer_info); |
3572 | rx_ring->rx_buffer_info = NULL; | |
3573 | ||
05d063aa | 3574 | dma_free_coherent(rx_ring->dev, rx_ring->size, rx_ring->desc, |
2a1f8794 | 3575 | rx_ring->dma); |
92915f71 GR |
3576 | |
3577 | rx_ring->desc = NULL; | |
3578 | } | |
3579 | ||
3580 | /** | |
3581 | * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues | |
3582 | * @adapter: board private structure | |
3583 | * | |
3584 | * Free all receive software resources | |
3585 | **/ | |
3586 | static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter) | |
3587 | { | |
3588 | int i; | |
3589 | ||
3590 | for (i = 0; i < adapter->num_rx_queues; i++) | |
87e70ab9 | 3591 | if (adapter->rx_ring[i]->desc) |
05d063aa | 3592 | ixgbevf_free_rx_resources(adapter->rx_ring[i]); |
92915f71 GR |
3593 | } |
3594 | ||
3595 | /** | |
3596 | * ixgbevf_open - Called when a network interface is made active | |
3597 | * @netdev: network interface device structure | |
3598 | * | |
3599 | * Returns 0 on success, negative value on failure | |
3600 | * | |
3601 | * The open entry point is called when a network interface is made | |
3602 | * active by the system (IFF_UP). At this point all resources needed | |
3603 | * for transmit and receive operations are allocated, the interrupt | |
3604 | * handler is registered with the OS, the watchdog timer is started, | |
3605 | * and the stack is notified that the interface is ready. | |
3606 | **/ | |
324d0867 | 3607 | int ixgbevf_open(struct net_device *netdev) |
92915f71 GR |
3608 | { |
3609 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3610 | struct ixgbe_hw *hw = &adapter->hw; | |
3611 | int err; | |
3612 | ||
a1f6c6b1 | 3613 | /* A previous failure to open the device because of a lack of |
3614 | * available MSIX vector resources may have reset the number | |
3615 | * of msix vectors variable to zero. The only way to recover | |
3616 | * is to unload/reload the driver and hope that the system has | |
3617 | * been able to recover some MSIX vector resources. | |
3618 | */ | |
3619 | if (!adapter->num_msix_vectors) | |
3620 | return -ENOMEM; | |
3621 | ||
92915f71 GR |
3622 | if (hw->adapter_stopped) { |
3623 | ixgbevf_reset(adapter); | |
3624 | /* if adapter is still stopped then PF isn't up and | |
dec0d8e4 JK |
3625 | * the VF can't start. |
3626 | */ | |
92915f71 GR |
3627 | if (hw->adapter_stopped) { |
3628 | err = IXGBE_ERR_MBX; | |
dec0d8e4 | 3629 | pr_err("Unable to start - perhaps the PF Driver isn't up yet\n"); |
92915f71 GR |
3630 | goto err_setup_reset; |
3631 | } | |
3632 | } | |
3633 | ||
d9bdb57f ET |
3634 | /* disallow open during test */ |
3635 | if (test_bit(__IXGBEVF_TESTING, &adapter->state)) | |
3636 | return -EBUSY; | |
3637 | ||
3638 | netif_carrier_off(netdev); | |
3639 | ||
92915f71 GR |
3640 | /* allocate transmit descriptors */ |
3641 | err = ixgbevf_setup_all_tx_resources(adapter); | |
3642 | if (err) | |
3643 | goto err_setup_tx; | |
3644 | ||
3645 | /* allocate receive descriptors */ | |
3646 | err = ixgbevf_setup_all_rx_resources(adapter); | |
3647 | if (err) | |
3648 | goto err_setup_rx; | |
3649 | ||
3650 | ixgbevf_configure(adapter); | |
3651 | ||
92915f71 GR |
3652 | err = ixgbevf_request_irq(adapter); |
3653 | if (err) | |
3654 | goto err_req_irq; | |
3655 | ||
f2d00eca ET |
3656 | /* Notify the stack of the actual queue counts. */ |
3657 | err = netif_set_real_num_tx_queues(netdev, adapter->num_tx_queues); | |
3658 | if (err) | |
3659 | goto err_set_queues; | |
3660 | ||
3661 | err = netif_set_real_num_rx_queues(netdev, adapter->num_rx_queues); | |
3662 | if (err) | |
3663 | goto err_set_queues; | |
3664 | ||
d9bdb57f | 3665 | ixgbevf_up_complete(adapter); |
92915f71 GR |
3666 | |
3667 | return 0; | |
3668 | ||
f2d00eca ET |
3669 | err_set_queues: |
3670 | ixgbevf_free_irq(adapter); | |
92915f71 | 3671 | err_req_irq: |
92915f71 | 3672 | ixgbevf_free_all_rx_resources(adapter); |
f2d00eca | 3673 | err_setup_rx: |
92915f71 | 3674 | ixgbevf_free_all_tx_resources(adapter); |
f2d00eca | 3675 | err_setup_tx: |
92915f71 | 3676 | ixgbevf_reset(adapter); |
92915f71 GR |
3677 | err_setup_reset: |
3678 | ||
3679 | return err; | |
3680 | } | |
3681 | ||
b19cf6ee ET |
3682 | /** |
3683 | * ixgbevf_close_suspend - actions necessary to both suspend and close flows | |
3684 | * @adapter: the private adapter struct | |
3685 | * | |
3686 | * This function should contain the necessary work common to both suspending | |
3687 | * and closing of the device. | |
3688 | */ | |
3689 | static void ixgbevf_close_suspend(struct ixgbevf_adapter *adapter) | |
3690 | { | |
3691 | ixgbevf_down(adapter); | |
3692 | ixgbevf_free_irq(adapter); | |
3693 | ixgbevf_free_all_tx_resources(adapter); | |
3694 | ixgbevf_free_all_rx_resources(adapter); | |
3695 | } | |
3696 | ||
92915f71 GR |
3697 | /** |
3698 | * ixgbevf_close - Disables a network interface | |
3699 | * @netdev: network interface device structure | |
3700 | * | |
3701 | * Returns 0, this is not allowed to fail | |
3702 | * | |
3703 | * The close entry point is called when an interface is de-activated | |
3704 | * by the OS. The hardware is still under the drivers control, but | |
3705 | * needs to be disabled. A global MAC reset is issued to stop the | |
3706 | * hardware, and all transmit and receive resources are freed. | |
3707 | **/ | |
324d0867 | 3708 | int ixgbevf_close(struct net_device *netdev) |
92915f71 GR |
3709 | { |
3710 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3711 | ||
b19cf6ee ET |
3712 | if (netif_device_present(netdev)) |
3713 | ixgbevf_close_suspend(adapter); | |
92915f71 GR |
3714 | |
3715 | return 0; | |
3716 | } | |
3717 | ||
220fe050 DS |
3718 | static void ixgbevf_queue_reset_subtask(struct ixgbevf_adapter *adapter) |
3719 | { | |
3720 | struct net_device *dev = adapter->netdev; | |
3721 | ||
d5dd7c3f ET |
3722 | if (!test_and_clear_bit(__IXGBEVF_QUEUE_RESET_REQUESTED, |
3723 | &adapter->state)) | |
220fe050 DS |
3724 | return; |
3725 | ||
220fe050 DS |
3726 | /* if interface is down do nothing */ |
3727 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
3728 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
3729 | return; | |
3730 | ||
3731 | /* Hardware has to reinitialize queues and interrupts to | |
3732 | * match packet buffer alignment. Unfortunately, the | |
3733 | * hardware is not flexible enough to do this dynamically. | |
3734 | */ | |
2dad7b27 ET |
3735 | rtnl_lock(); |
3736 | ||
220fe050 DS |
3737 | if (netif_running(dev)) |
3738 | ixgbevf_close(dev); | |
3739 | ||
3740 | ixgbevf_clear_interrupt_scheme(adapter); | |
3741 | ixgbevf_init_interrupt_scheme(adapter); | |
3742 | ||
3743 | if (netif_running(dev)) | |
3744 | ixgbevf_open(dev); | |
2dad7b27 ET |
3745 | |
3746 | rtnl_unlock(); | |
220fe050 DS |
3747 | } |
3748 | ||
70a10e25 | 3749 | static void ixgbevf_tx_ctxtdesc(struct ixgbevf_ring *tx_ring, |
7f68d430 SN |
3750 | u32 vlan_macip_lens, u32 fceof_saidx, |
3751 | u32 type_tucmd, u32 mss_l4len_idx) | |
92915f71 GR |
3752 | { |
3753 | struct ixgbe_adv_tx_context_desc *context_desc; | |
70a10e25 | 3754 | u16 i = tx_ring->next_to_use; |
92915f71 | 3755 | |
70a10e25 | 3756 | context_desc = IXGBEVF_TX_CTXTDESC(tx_ring, i); |
92915f71 | 3757 | |
70a10e25 AD |
3758 | i++; |
3759 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
92915f71 | 3760 | |
70a10e25 AD |
3761 | /* set bits to identify this as an advanced context descriptor */ |
3762 | type_tucmd |= IXGBE_TXD_CMD_DEXT | IXGBE_ADVTXD_DTYP_CTXT; | |
92915f71 | 3763 | |
70a10e25 | 3764 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); |
7f68d430 | 3765 | context_desc->fceof_saidx = cpu_to_le32(fceof_saidx); |
70a10e25 AD |
3766 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); |
3767 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
3768 | } | |
3769 | ||
3770 | static int ixgbevf_tso(struct ixgbevf_ring *tx_ring, | |
7ad1a093 | 3771 | struct ixgbevf_tx_buffer *first, |
7f68d430 SN |
3772 | u8 *hdr_len, |
3773 | struct ixgbevf_ipsec_tx_data *itd) | |
70a10e25 | 3774 | { |
b83e3010 | 3775 | u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; |
7ad1a093 | 3776 | struct sk_buff *skb = first->skb; |
b83e3010 AD |
3777 | union { |
3778 | struct iphdr *v4; | |
3779 | struct ipv6hdr *v6; | |
3780 | unsigned char *hdr; | |
3781 | } ip; | |
3782 | union { | |
3783 | struct tcphdr *tcp; | |
3784 | unsigned char *hdr; | |
3785 | } l4; | |
3786 | u32 paylen, l4_offset; | |
7f68d430 | 3787 | u32 fceof_saidx = 0; |
8f12c034 | 3788 | int err; |
70a10e25 | 3789 | |
01a545cf ET |
3790 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
3791 | return 0; | |
3792 | ||
70a10e25 AD |
3793 | if (!skb_is_gso(skb)) |
3794 | return 0; | |
92915f71 | 3795 | |
8f12c034 FR |
3796 | err = skb_cow_head(skb, 0); |
3797 | if (err < 0) | |
3798 | return err; | |
92915f71 | 3799 | |
2a20525b SP |
3800 | if (eth_p_mpls(first->protocol)) |
3801 | ip.hdr = skb_inner_network_header(skb); | |
3802 | else | |
3803 | ip.hdr = skb_network_header(skb); | |
b83e3010 AD |
3804 | l4.hdr = skb_checksum_start(skb); |
3805 | ||
70a10e25 AD |
3806 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
3807 | type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
3808 | ||
b83e3010 AD |
3809 | /* initialize outer IP header fields */ |
3810 | if (ip.v4->version == 4) { | |
c54cdc31 AD |
3811 | unsigned char *csum_start = skb_checksum_start(skb); |
3812 | unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); | |
7f68d430 | 3813 | int len = csum_start - trans_start; |
c54cdc31 | 3814 | |
b83e3010 | 3815 | /* IP header will have to cancel out any data that |
7f68d430 SN |
3816 | * is not a part of the outer IP header, so set to |
3817 | * a reverse csum if needed, else init check to 0. | |
b83e3010 | 3818 | */ |
7f68d430 SN |
3819 | ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? |
3820 | csum_fold(csum_partial(trans_start, | |
3821 | len, 0)) : 0; | |
70a10e25 | 3822 | type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; |
b83e3010 AD |
3823 | |
3824 | ip.v4->tot_len = 0; | |
7ad1a093 ET |
3825 | first->tx_flags |= IXGBE_TX_FLAGS_TSO | |
3826 | IXGBE_TX_FLAGS_CSUM | | |
3827 | IXGBE_TX_FLAGS_IPV4; | |
b83e3010 AD |
3828 | } else { |
3829 | ip.v6->payload_len = 0; | |
7ad1a093 ET |
3830 | first->tx_flags |= IXGBE_TX_FLAGS_TSO | |
3831 | IXGBE_TX_FLAGS_CSUM; | |
70a10e25 AD |
3832 | } |
3833 | ||
b83e3010 AD |
3834 | /* determine offset of inner transport header */ |
3835 | l4_offset = l4.hdr - skb->data; | |
3836 | ||
3837 | /* compute length of segmentation header */ | |
3838 | *hdr_len = (l4.tcp->doff * 4) + l4_offset; | |
70a10e25 | 3839 | |
b83e3010 AD |
3840 | /* remove payload length from inner checksum */ |
3841 | paylen = skb->len - l4_offset; | |
de844713 | 3842 | csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen)); |
b83e3010 AD |
3843 | |
3844 | /* update gso size and bytecount with header size */ | |
7ad1a093 ET |
3845 | first->gso_segs = skb_shinfo(skb)->gso_segs; |
3846 | first->bytecount += (first->gso_segs - 1) * *hdr_len; | |
3847 | ||
70a10e25 | 3848 | /* mss_l4len_id: use 1 as index for TSO */ |
b83e3010 | 3849 | mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; |
70a10e25 | 3850 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; |
8d055cc0 | 3851 | mss_l4len_idx |= (1u << IXGBE_ADVTXD_IDX_SHIFT); |
70a10e25 | 3852 | |
7f68d430 SN |
3853 | fceof_saidx |= itd->pfsa; |
3854 | type_tucmd |= itd->flags | itd->trailer_len; | |
3855 | ||
70a10e25 | 3856 | /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ |
b83e3010 AD |
3857 | vlan_macip_lens = l4.hdr - ip.hdr; |
3858 | vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; | |
7ad1a093 | 3859 | vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; |
70a10e25 | 3860 | |
7f68d430 SN |
3861 | ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, |
3862 | mss_l4len_idx); | |
70a10e25 AD |
3863 | |
3864 | return 1; | |
92915f71 GR |
3865 | } |
3866 | ||
7ad1a093 | 3867 | static void ixgbevf_tx_csum(struct ixgbevf_ring *tx_ring, |
7f68d430 SN |
3868 | struct ixgbevf_tx_buffer *first, |
3869 | struct ixgbevf_ipsec_tx_data *itd) | |
92915f71 | 3870 | { |
7ad1a093 | 3871 | struct sk_buff *skb = first->skb; |
70a10e25 | 3872 | u32 vlan_macip_lens = 0; |
7f68d430 | 3873 | u32 fceof_saidx = 0; |
70a10e25 | 3874 | u32 type_tucmd = 0; |
92915f71 | 3875 | |
cb2b3edb AD |
3876 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
3877 | goto no_csum; | |
92915f71 | 3878 | |
cb2b3edb AD |
3879 | switch (skb->csum_offset) { |
3880 | case offsetof(struct tcphdr, check): | |
3881 | type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
5463fce6 | 3882 | fallthrough; |
cb2b3edb AD |
3883 | case offsetof(struct udphdr, check): |
3884 | break; | |
3885 | case offsetof(struct sctphdr, checksum): | |
3886 | /* validate that this is actually an SCTP request */ | |
fc186d0a | 3887 | if (skb_csum_is_sctp(skb)) { |
cb2b3edb | 3888 | type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; |
70a10e25 | 3889 | break; |
70a10e25 | 3890 | } |
5463fce6 | 3891 | fallthrough; |
cb2b3edb AD |
3892 | default: |
3893 | skb_checksum_help(skb); | |
3894 | goto no_csum; | |
92915f71 | 3895 | } |
7fb94bd5 SB |
3896 | |
3897 | if (first->protocol == htons(ETH_P_IP)) | |
3898 | type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; | |
3899 | ||
cb2b3edb AD |
3900 | /* update TX checksum flag */ |
3901 | first->tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
3902 | vlan_macip_lens = skb_checksum_start_offset(skb) - | |
3903 | skb_network_offset(skb); | |
d34a614a | 3904 | no_csum: |
70a10e25 AD |
3905 | /* vlan_macip_lens: MACLEN, VLAN tag */ |
3906 | vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; | |
7ad1a093 | 3907 | vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; |
70a10e25 | 3908 | |
7f68d430 SN |
3909 | fceof_saidx |= itd->pfsa; |
3910 | type_tucmd |= itd->flags | itd->trailer_len; | |
3911 | ||
3912 | ixgbevf_tx_ctxtdesc(tx_ring, vlan_macip_lens, | |
3913 | fceof_saidx, type_tucmd, 0); | |
92915f71 GR |
3914 | } |
3915 | ||
29d37fa1 | 3916 | static __le32 ixgbevf_tx_cmd_type(u32 tx_flags) |
92915f71 | 3917 | { |
29d37fa1 ET |
3918 | /* set type for advanced descriptor with frame checksum insertion */ |
3919 | __le32 cmd_type = cpu_to_le32(IXGBE_ADVTXD_DTYP_DATA | | |
3920 | IXGBE_ADVTXD_DCMD_IFCS | | |
3921 | IXGBE_ADVTXD_DCMD_DEXT); | |
92915f71 | 3922 | |
dec0d8e4 | 3923 | /* set HW VLAN bit if VLAN is present */ |
29d37fa1 ET |
3924 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
3925 | cmd_type |= cpu_to_le32(IXGBE_ADVTXD_DCMD_VLE); | |
92915f71 | 3926 | |
29d37fa1 ET |
3927 | /* set segmentation enable bits for TSO/FSO */ |
3928 | if (tx_flags & IXGBE_TX_FLAGS_TSO) | |
3929 | cmd_type |= cpu_to_le32(IXGBE_ADVTXD_DCMD_TSE); | |
92915f71 | 3930 | |
29d37fa1 ET |
3931 | return cmd_type; |
3932 | } | |
92915f71 | 3933 | |
29d37fa1 ET |
3934 | static void ixgbevf_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, |
3935 | u32 tx_flags, unsigned int paylen) | |
3936 | { | |
3937 | __le32 olinfo_status = cpu_to_le32(paylen << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
9bdfefd2 | 3938 | |
29d37fa1 ET |
3939 | /* enable L4 checksum for TSO and TX checksum offload */ |
3940 | if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
3941 | olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_POPTS_TXSM); | |
92915f71 | 3942 | |
29d37fa1 ET |
3943 | /* enble IPv4 checksum for TSO */ |
3944 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
3945 | olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_POPTS_IXSM); | |
92915f71 | 3946 | |
7f68d430 SN |
3947 | /* enable IPsec */ |
3948 | if (tx_flags & IXGBE_TX_FLAGS_IPSEC) | |
3949 | olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_POPTS_IPSEC); | |
3950 | ||
3951 | /* use index 1 context for TSO/FSO/FCOE/IPSEC */ | |
3952 | if (tx_flags & (IXGBE_TX_FLAGS_TSO | IXGBE_TX_FLAGS_IPSEC)) | |
8d055cc0 | 3953 | olinfo_status |= cpu_to_le32(1u << IXGBE_ADVTXD_IDX_SHIFT); |
92915f71 | 3954 | |
29d37fa1 ET |
3955 | /* Check Context must be set if Tx switch is enabled, which it |
3956 | * always is for case where virtual functions are running | |
3957 | */ | |
3958 | olinfo_status |= cpu_to_le32(IXGBE_ADVTXD_CC); | |
92915f71 | 3959 | |
29d37fa1 ET |
3960 | tx_desc->read.olinfo_status = olinfo_status; |
3961 | } | |
92915f71 | 3962 | |
29d37fa1 ET |
3963 | static void ixgbevf_tx_map(struct ixgbevf_ring *tx_ring, |
3964 | struct ixgbevf_tx_buffer *first, | |
3965 | const u8 hdr_len) | |
3966 | { | |
29d37fa1 ET |
3967 | struct sk_buff *skb = first->skb; |
3968 | struct ixgbevf_tx_buffer *tx_buffer; | |
3969 | union ixgbe_adv_tx_desc *tx_desc; | |
d7840976 | 3970 | skb_frag_t *frag; |
6f355454 ET |
3971 | dma_addr_t dma; |
3972 | unsigned int data_len, size; | |
29d37fa1 | 3973 | u32 tx_flags = first->tx_flags; |
6f355454 | 3974 | __le32 cmd_type = ixgbevf_tx_cmd_type(tx_flags); |
29d37fa1 | 3975 | u16 i = tx_ring->next_to_use; |
9bdfefd2 | 3976 | |
29d37fa1 | 3977 | tx_desc = IXGBEVF_TX_DESC(tx_ring, i); |
92915f71 | 3978 | |
6f355454 ET |
3979 | ixgbevf_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); |
3980 | ||
3981 | size = skb_headlen(skb); | |
3982 | data_len = skb->data_len; | |
7ad1a093 | 3983 | |
29d37fa1 | 3984 | dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); |
92915f71 | 3985 | |
6f355454 | 3986 | tx_buffer = first; |
92915f71 | 3987 | |
6f355454 ET |
3988 | for (frag = &skb_shinfo(skb)->frags[0];; frag++) { |
3989 | if (dma_mapping_error(tx_ring->dev, dma)) | |
3990 | goto dma_error; | |
3991 | ||
3992 | /* record length, and DMA address */ | |
3993 | dma_unmap_len_set(tx_buffer, len, size); | |
3994 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
3995 | ||
3996 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
92915f71 | 3997 | |
29d37fa1 ET |
3998 | while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { |
3999 | tx_desc->read.cmd_type_len = | |
4000 | cmd_type | cpu_to_le32(IXGBE_MAX_DATA_PER_TXD); | |
92915f71 | 4001 | |
29d37fa1 ET |
4002 | i++; |
4003 | tx_desc++; | |
4004 | if (i == tx_ring->count) { | |
4005 | tx_desc = IXGBEVF_TX_DESC(tx_ring, 0); | |
4006 | i = 0; | |
4007 | } | |
6f355454 | 4008 | tx_desc->read.olinfo_status = 0; |
92915f71 | 4009 | |
29d37fa1 ET |
4010 | dma += IXGBE_MAX_DATA_PER_TXD; |
4011 | size -= IXGBE_MAX_DATA_PER_TXD; | |
92915f71 | 4012 | |
29d37fa1 | 4013 | tx_desc->read.buffer_addr = cpu_to_le64(dma); |
29d37fa1 | 4014 | } |
92915f71 | 4015 | |
29d37fa1 ET |
4016 | if (likely(!data_len)) |
4017 | break; | |
92915f71 | 4018 | |
29d37fa1 | 4019 | tx_desc->read.cmd_type_len = cmd_type | cpu_to_le32(size); |
92915f71 | 4020 | |
29d37fa1 ET |
4021 | i++; |
4022 | tx_desc++; | |
4023 | if (i == tx_ring->count) { | |
4024 | tx_desc = IXGBEVF_TX_DESC(tx_ring, 0); | |
4025 | i = 0; | |
4026 | } | |
6f355454 | 4027 | tx_desc->read.olinfo_status = 0; |
92915f71 | 4028 | |
29d37fa1 ET |
4029 | size = skb_frag_size(frag); |
4030 | data_len -= size; | |
92915f71 | 4031 | |
29d37fa1 ET |
4032 | dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, |
4033 | DMA_TO_DEVICE); | |
70a10e25 | 4034 | |
29d37fa1 | 4035 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
70a10e25 | 4036 | } |
92915f71 | 4037 | |
29d37fa1 ET |
4038 | /* write last descriptor with RS and EOP bits */ |
4039 | cmd_type |= cpu_to_le32(size) | cpu_to_le32(IXGBE_TXD_CMD); | |
4040 | tx_desc->read.cmd_type_len = cmd_type; | |
4041 | ||
4042 | /* set the timestamp */ | |
4043 | first->time_stamp = jiffies; | |
4044 | ||
9fc145fc JK |
4045 | skb_tx_timestamp(skb); |
4046 | ||
29d37fa1 ET |
4047 | /* Force memory writes to complete before letting h/w know there |
4048 | * are new descriptors to fetch. (Only applicable for weak-ordered | |
4049 | * memory model archs, such as IA-64). | |
4050 | * | |
4051 | * We also need this memory barrier (wmb) to make certain all of the | |
4052 | * status bits have been updated before next_to_watch is written. | |
70a10e25 | 4053 | */ |
29d37fa1 | 4054 | wmb(); |
92915f71 | 4055 | |
29d37fa1 ET |
4056 | /* set next_to_watch value indicating a packet is present */ |
4057 | first->next_to_watch = tx_desc; | |
92915f71 | 4058 | |
29d37fa1 ET |
4059 | i++; |
4060 | if (i == tx_ring->count) | |
4061 | i = 0; | |
9bdfefd2 | 4062 | |
29d37fa1 | 4063 | tx_ring->next_to_use = i; |
92915f71 | 4064 | |
29d37fa1 | 4065 | /* notify HW of packet */ |
06380db6 | 4066 | ixgbevf_write_tail(tx_ring, i); |
29d37fa1 ET |
4067 | |
4068 | return; | |
4069 | dma_error: | |
4070 | dev_err(tx_ring->dev, "TX DMA map failed\n"); | |
865a4d98 | 4071 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
29d37fa1 ET |
4072 | |
4073 | /* clear dma mappings for failed tx_buffer_info map */ | |
865a4d98 ET |
4074 | while (tx_buffer != first) { |
4075 | if (dma_unmap_len(tx_buffer, len)) | |
4076 | dma_unmap_page(tx_ring->dev, | |
4077 | dma_unmap_addr(tx_buffer, dma), | |
4078 | dma_unmap_len(tx_buffer, len), | |
4079 | DMA_TO_DEVICE); | |
4080 | dma_unmap_len_set(tx_buffer, len, 0); | |
4081 | ||
4082 | if (i-- == 0) | |
4083 | i += tx_ring->count; | |
29d37fa1 | 4084 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
29d37fa1 | 4085 | } |
92915f71 | 4086 | |
865a4d98 ET |
4087 | if (dma_unmap_len(tx_buffer, len)) |
4088 | dma_unmap_single(tx_ring->dev, | |
4089 | dma_unmap_addr(tx_buffer, dma), | |
4090 | dma_unmap_len(tx_buffer, len), | |
4091 | DMA_TO_DEVICE); | |
4092 | dma_unmap_len_set(tx_buffer, len, 0); | |
4093 | ||
4094 | dev_kfree_skb_any(tx_buffer->skb); | |
4095 | tx_buffer->skb = NULL; | |
4096 | ||
92915f71 | 4097 | tx_ring->next_to_use = i; |
92915f71 GR |
4098 | } |
4099 | ||
fb40195c | 4100 | static int __ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size) |
92915f71 | 4101 | { |
fb40195c | 4102 | netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); |
92915f71 GR |
4103 | /* Herbert's original patch had: |
4104 | * smp_mb__after_netif_stop_queue(); | |
dec0d8e4 JK |
4105 | * but since that doesn't exist yet, just open code it. |
4106 | */ | |
92915f71 GR |
4107 | smp_mb(); |
4108 | ||
4109 | /* We need to check again in a case another CPU has just | |
dec0d8e4 JK |
4110 | * made room available. |
4111 | */ | |
f880d07b | 4112 | if (likely(ixgbevf_desc_unused(tx_ring) < size)) |
92915f71 GR |
4113 | return -EBUSY; |
4114 | ||
4115 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
fb40195c | 4116 | netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index); |
095e2617 ET |
4117 | ++tx_ring->tx_stats.restart_queue; |
4118 | ||
92915f71 GR |
4119 | return 0; |
4120 | } | |
4121 | ||
fb40195c | 4122 | static int ixgbevf_maybe_stop_tx(struct ixgbevf_ring *tx_ring, int size) |
92915f71 | 4123 | { |
f880d07b | 4124 | if (likely(ixgbevf_desc_unused(tx_ring) >= size)) |
92915f71 | 4125 | return 0; |
fb40195c | 4126 | return __ixgbevf_maybe_stop_tx(tx_ring, size); |
92915f71 GR |
4127 | } |
4128 | ||
5cc0f1c0 ET |
4129 | static int ixgbevf_xmit_frame_ring(struct sk_buff *skb, |
4130 | struct ixgbevf_ring *tx_ring) | |
92915f71 | 4131 | { |
7ad1a093 | 4132 | struct ixgbevf_tx_buffer *first; |
7ad1a093 ET |
4133 | int tso; |
4134 | u32 tx_flags = 0; | |
3595990a | 4135 | u16 count = TXD_USE_COUNT(skb_headlen(skb)); |
7f68d430 | 4136 | struct ixgbevf_ipsec_tx_data ipsec_tx = { 0 }; |
3595990a AD |
4137 | #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD |
4138 | unsigned short f; | |
4139 | #endif | |
7ad1a093 | 4140 | u8 hdr_len = 0; |
f9d08f16 | 4141 | u8 *dst_mac = skb_header_pointer(skb, 0, 0, NULL); |
7ad1a093 | 4142 | |
46acc460 | 4143 | if (!dst_mac || is_link_local_ether_addr(dst_mac)) { |
e7fcd543 | 4144 | dev_kfree_skb_any(skb); |
f9d08f16 GR |
4145 | return NETDEV_TX_OK; |
4146 | } | |
92915f71 | 4147 | |
dec0d8e4 | 4148 | /* need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, |
3595990a AD |
4149 | * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, |
4150 | * + 2 desc gap to keep tail from touching head, | |
4151 | * + 1 desc for context descriptor, | |
4152 | * otherwise try next time | |
4153 | */ | |
4154 | #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD | |
d601be97 QC |
4155 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
4156 | skb_frag_t *frag = &skb_shinfo(skb)->frags[f]; | |
4157 | ||
4158 | count += TXD_USE_COUNT(skb_frag_size(frag)); | |
4159 | } | |
3595990a AD |
4160 | #else |
4161 | count += skb_shinfo(skb)->nr_frags; | |
4162 | #endif | |
fb40195c | 4163 | if (ixgbevf_maybe_stop_tx(tx_ring, count + 3)) { |
095e2617 | 4164 | tx_ring->tx_stats.tx_busy++; |
3595990a AD |
4165 | return NETDEV_TX_BUSY; |
4166 | } | |
4167 | ||
7ad1a093 ET |
4168 | /* record the location of the first descriptor for this packet */ |
4169 | first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; | |
4170 | first->skb = skb; | |
4171 | first->bytecount = skb->len; | |
4172 | first->gso_segs = 1; | |
4173 | ||
df8a39de JP |
4174 | if (skb_vlan_tag_present(skb)) { |
4175 | tx_flags |= skb_vlan_tag_get(skb); | |
92915f71 GR |
4176 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; |
4177 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
4178 | } | |
4179 | ||
7ad1a093 ET |
4180 | /* record initial flags and protocol */ |
4181 | first->tx_flags = tx_flags; | |
4182 | first->protocol = vlan_get_protocol(skb); | |
92915f71 | 4183 | |
48e01e00 | 4184 | #ifdef CONFIG_IXGBEVF_IPSEC |
8f6617ba | 4185 | if (xfrm_offload(skb) && !ixgbevf_ipsec_tx(tx_ring, first, &ipsec_tx)) |
7f68d430 SN |
4186 | goto out_drop; |
4187 | #endif | |
4188 | tso = ixgbevf_tso(tx_ring, first, &hdr_len, &ipsec_tx); | |
7ad1a093 ET |
4189 | if (tso < 0) |
4190 | goto out_drop; | |
b5d217f3 | 4191 | else if (!tso) |
7f68d430 | 4192 | ixgbevf_tx_csum(tx_ring, first, &ipsec_tx); |
92915f71 | 4193 | |
29d37fa1 | 4194 | ixgbevf_tx_map(tx_ring, first, hdr_len); |
70a10e25 | 4195 | |
fb40195c | 4196 | ixgbevf_maybe_stop_tx(tx_ring, DESC_NEEDED); |
92915f71 | 4197 | |
7ad1a093 ET |
4198 | return NETDEV_TX_OK; |
4199 | ||
4200 | out_drop: | |
4201 | dev_kfree_skb_any(first->skb); | |
4202 | first->skb = NULL; | |
4203 | ||
92915f71 GR |
4204 | return NETDEV_TX_OK; |
4205 | } | |
4206 | ||
cf12aab6 | 4207 | static netdev_tx_t ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
5cc0f1c0 ET |
4208 | { |
4209 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
4210 | struct ixgbevf_ring *tx_ring; | |
4211 | ||
4212 | if (skb->len <= 0) { | |
4213 | dev_kfree_skb_any(skb); | |
4214 | return NETDEV_TX_OK; | |
4215 | } | |
4216 | ||
4217 | /* The minimum packet size for olinfo paylen is 17 so pad the skb | |
4218 | * in order to meet this minimum size requirement. | |
4219 | */ | |
4220 | if (skb->len < 17) { | |
4221 | if (skb_padto(skb, 17)) | |
4222 | return NETDEV_TX_OK; | |
4223 | skb->len = 17; | |
4224 | } | |
4225 | ||
4226 | tx_ring = adapter->tx_ring[skb->queue_mapping]; | |
4227 | return ixgbevf_xmit_frame_ring(skb, tx_ring); | |
4228 | } | |
4229 | ||
92915f71 GR |
4230 | /** |
4231 | * ixgbevf_set_mac - Change the Ethernet Address of the NIC | |
4232 | * @netdev: network interface device structure | |
4233 | * @p: pointer to an address structure | |
4234 | * | |
4235 | * Returns 0 on success, negative on failure | |
4236 | **/ | |
4237 | static int ixgbevf_set_mac(struct net_device *netdev, void *p) | |
4238 | { | |
4239 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
4240 | struct ixgbe_hw *hw = &adapter->hw; | |
4241 | struct sockaddr *addr = p; | |
32ca6868 | 4242 | int err; |
92915f71 GR |
4243 | |
4244 | if (!is_valid_ether_addr(addr->sa_data)) | |
4245 | return -EADDRNOTAVAIL; | |
4246 | ||
55fdd45b | 4247 | spin_lock_bh(&adapter->mbx_lock); |
1c55ed76 | 4248 | |
32ca6868 | 4249 | err = hw->mac.ops.set_rar(hw, 0, addr->sa_data, 0); |
92915f71 | 4250 | |
55fdd45b | 4251 | spin_unlock_bh(&adapter->mbx_lock); |
1c55ed76 | 4252 | |
32ca6868 ET |
4253 | if (err) |
4254 | return -EPERM; | |
4255 | ||
4256 | ether_addr_copy(hw->mac.addr, addr->sa_data); | |
6e7d0ba1 | 4257 | ether_addr_copy(hw->mac.perm_addr, addr->sa_data); |
f3956ebb | 4258 | eth_hw_addr_set(netdev, addr->sa_data); |
32ca6868 | 4259 | |
92915f71 GR |
4260 | return 0; |
4261 | } | |
4262 | ||
4263 | /** | |
4264 | * ixgbevf_change_mtu - Change the Maximum Transfer Unit | |
4265 | * @netdev: network interface device structure | |
4266 | * @new_mtu: new value for maximum frame size | |
4267 | * | |
4268 | * Returns 0 on success, negative on failure | |
4269 | **/ | |
4270 | static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) | |
4271 | { | |
4272 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
bad17234 | 4273 | struct ixgbe_hw *hw = &adapter->hw; |
92915f71 | 4274 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
6a11e52b | 4275 | int ret; |
69bfbec4 | 4276 | |
c7aec596 TN |
4277 | /* prevent MTU being changed to a size unsupported by XDP */ |
4278 | if (adapter->xdp_prog) { | |
4279 | dev_warn(&adapter->pdev->dev, "MTU cannot be changed while XDP program is loaded\n"); | |
4280 | return -EPERM; | |
4281 | } | |
4282 | ||
14b22cd9 | 4283 | spin_lock_bh(&adapter->mbx_lock); |
6a11e52b TN |
4284 | /* notify the PF of our intent to use this size of frame */ |
4285 | ret = hw->mac.ops.set_rlpml(hw, max_frame); | |
14b22cd9 | 4286 | spin_unlock_bh(&adapter->mbx_lock); |
6a11e52b TN |
4287 | if (ret) |
4288 | return -EINVAL; | |
4289 | ||
bad17234 | 4290 | hw_dbg(hw, "changing MTU from %d to %d\n", |
92915f71 | 4291 | netdev->mtu, new_mtu); |
6a11e52b | 4292 | |
92915f71 | 4293 | /* must set new MTU before calling down or up */ |
1eb2cded | 4294 | WRITE_ONCE(netdev->mtu, new_mtu); |
92915f71 | 4295 | |
1ab37e12 ET |
4296 | if (netif_running(netdev)) |
4297 | ixgbevf_reinit_locked(adapter); | |
4298 | ||
92915f71 GR |
4299 | return 0; |
4300 | } | |
4301 | ||
75a3f93b | 4302 | static int ixgbevf_suspend(struct device *dev_d) |
92915f71 | 4303 | { |
bac66317 | 4304 | struct net_device *netdev = dev_get_drvdata(dev_d); |
92915f71 GR |
4305 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); |
4306 | ||
2dad7b27 | 4307 | rtnl_lock(); |
92915f71 GR |
4308 | netif_device_detach(netdev); |
4309 | ||
b19cf6ee ET |
4310 | if (netif_running(netdev)) |
4311 | ixgbevf_close_suspend(adapter); | |
4312 | ||
4313 | ixgbevf_clear_interrupt_scheme(adapter); | |
2dad7b27 | 4314 | rtnl_unlock(); |
92915f71 | 4315 | |
0ac1e8ce AD |
4316 | return 0; |
4317 | } | |
4318 | ||
75a3f93b | 4319 | static int ixgbevf_resume(struct device *dev_d) |
0ac1e8ce | 4320 | { |
bac66317 | 4321 | struct pci_dev *pdev = to_pci_dev(dev_d); |
27ae2967 WY |
4322 | struct net_device *netdev = pci_get_drvdata(pdev); |
4323 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
0ac1e8ce AD |
4324 | u32 err; |
4325 | ||
26403b7f | 4326 | adapter->hw.hw_addr = adapter->io_addr; |
4e857c58 | 4327 | smp_mb__before_atomic(); |
bc0c7151 | 4328 | clear_bit(__IXGBEVF_DISABLED, &adapter->state); |
0ac1e8ce AD |
4329 | pci_set_master(pdev); |
4330 | ||
798e381a DS |
4331 | ixgbevf_reset(adapter); |
4332 | ||
0ac1e8ce AD |
4333 | rtnl_lock(); |
4334 | err = ixgbevf_init_interrupt_scheme(adapter); | |
f2d00eca ET |
4335 | if (!err && netif_running(netdev)) |
4336 | err = ixgbevf_open(netdev); | |
0ac1e8ce | 4337 | rtnl_unlock(); |
f2d00eca | 4338 | if (err) |
0ac1e8ce | 4339 | return err; |
0ac1e8ce AD |
4340 | |
4341 | netif_device_attach(netdev); | |
4342 | ||
4343 | return err; | |
4344 | } | |
4345 | ||
0ac1e8ce AD |
4346 | static void ixgbevf_shutdown(struct pci_dev *pdev) |
4347 | { | |
bac66317 | 4348 | ixgbevf_suspend(&pdev->dev); |
92915f71 GR |
4349 | } |
4350 | ||
21092e9c TN |
4351 | static void ixgbevf_get_tx_ring_stats(struct rtnl_link_stats64 *stats, |
4352 | const struct ixgbevf_ring *ring) | |
4353 | { | |
4354 | u64 bytes, packets; | |
4355 | unsigned int start; | |
4356 | ||
4357 | if (ring) { | |
4358 | do { | |
068c38ad | 4359 | start = u64_stats_fetch_begin(&ring->syncp); |
21092e9c TN |
4360 | bytes = ring->stats.bytes; |
4361 | packets = ring->stats.packets; | |
068c38ad | 4362 | } while (u64_stats_fetch_retry(&ring->syncp, start)); |
21092e9c TN |
4363 | stats->tx_bytes += bytes; |
4364 | stats->tx_packets += packets; | |
4365 | } | |
4366 | } | |
4367 | ||
bc1f4470 | 4368 | static void ixgbevf_get_stats(struct net_device *netdev, |
4369 | struct rtnl_link_stats64 *stats) | |
4197aa7b ED |
4370 | { |
4371 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
4372 | unsigned int start; | |
4373 | u64 bytes, packets; | |
4374 | const struct ixgbevf_ring *ring; | |
4375 | int i; | |
4376 | ||
4377 | ixgbevf_update_stats(adapter); | |
4378 | ||
4379 | stats->multicast = adapter->stats.vfmprc - adapter->stats.base_vfmprc; | |
4380 | ||
21c046e4 | 4381 | rcu_read_lock(); |
4197aa7b | 4382 | for (i = 0; i < adapter->num_rx_queues; i++) { |
87e70ab9 | 4383 | ring = adapter->rx_ring[i]; |
4197aa7b | 4384 | do { |
068c38ad | 4385 | start = u64_stats_fetch_begin(&ring->syncp); |
095e2617 ET |
4386 | bytes = ring->stats.bytes; |
4387 | packets = ring->stats.packets; | |
068c38ad | 4388 | } while (u64_stats_fetch_retry(&ring->syncp, start)); |
4197aa7b ED |
4389 | stats->rx_bytes += bytes; |
4390 | stats->rx_packets += packets; | |
4391 | } | |
4392 | ||
4393 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
87e70ab9 | 4394 | ring = adapter->tx_ring[i]; |
21092e9c TN |
4395 | ixgbevf_get_tx_ring_stats(stats, ring); |
4396 | } | |
4397 | ||
4398 | for (i = 0; i < adapter->num_xdp_queues; i++) { | |
4399 | ring = adapter->xdp_ring[i]; | |
4400 | ixgbevf_get_tx_ring_stats(stats, ring); | |
4197aa7b | 4401 | } |
21c046e4 | 4402 | rcu_read_unlock(); |
4197aa7b ED |
4403 | } |
4404 | ||
b83e3010 AD |
4405 | #define IXGBEVF_MAX_MAC_HDR_LEN 127 |
4406 | #define IXGBEVF_MAX_NETWORK_HDR_LEN 511 | |
4407 | ||
4408 | static netdev_features_t | |
4409 | ixgbevf_features_check(struct sk_buff *skb, struct net_device *dev, | |
4410 | netdev_features_t features) | |
4411 | { | |
4412 | unsigned int network_hdr_len, mac_hdr_len; | |
4413 | ||
4414 | /* Make certain the headers can be described by a context descriptor */ | |
80bfab79 | 4415 | mac_hdr_len = skb_network_offset(skb); |
b83e3010 AD |
4416 | if (unlikely(mac_hdr_len > IXGBEVF_MAX_MAC_HDR_LEN)) |
4417 | return features & ~(NETIF_F_HW_CSUM | | |
4418 | NETIF_F_SCTP_CRC | | |
4419 | NETIF_F_HW_VLAN_CTAG_TX | | |
4420 | NETIF_F_TSO | | |
4421 | NETIF_F_TSO6); | |
4422 | ||
4423 | network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); | |
4424 | if (unlikely(network_hdr_len > IXGBEVF_MAX_NETWORK_HDR_LEN)) | |
4425 | return features & ~(NETIF_F_HW_CSUM | | |
4426 | NETIF_F_SCTP_CRC | | |
4427 | NETIF_F_TSO | | |
4428 | NETIF_F_TSO6); | |
4429 | ||
4430 | /* We can only support IPV4 TSO in tunnels if we can mangle the | |
4431 | * inner IP ID field, so strip TSO if MANGLEID is not supported. | |
4432 | */ | |
4433 | if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) | |
4434 | features &= ~NETIF_F_TSO; | |
4435 | ||
4436 | return features; | |
4437 | } | |
4438 | ||
c7aec596 TN |
4439 | static int ixgbevf_xdp_setup(struct net_device *dev, struct bpf_prog *prog) |
4440 | { | |
4441 | int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
4442 | struct ixgbevf_adapter *adapter = netdev_priv(dev); | |
4443 | struct bpf_prog *old_prog; | |
4444 | ||
4445 | /* verify ixgbevf ring attributes are sufficient for XDP */ | |
4446 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
4447 | struct ixgbevf_ring *ring = adapter->rx_ring[i]; | |
4448 | ||
4449 | if (frame_size > ixgbevf_rx_bufsz(ring)) | |
4450 | return -EINVAL; | |
4451 | } | |
4452 | ||
4453 | old_prog = xchg(&adapter->xdp_prog, prog); | |
21092e9c TN |
4454 | |
4455 | /* If transitioning XDP modes reconfigure rings */ | |
4456 | if (!!prog != !!old_prog) { | |
4457 | /* Hardware has to reinitialize queues and interrupts to | |
4458 | * match packet buffer alignment. Unfortunately, the | |
4459 | * hardware is not flexible enough to do this dynamically. | |
4460 | */ | |
4461 | if (netif_running(dev)) | |
4462 | ixgbevf_close(dev); | |
4463 | ||
4464 | ixgbevf_clear_interrupt_scheme(adapter); | |
4465 | ixgbevf_init_interrupt_scheme(adapter); | |
4466 | ||
4467 | if (netif_running(dev)) | |
4468 | ixgbevf_open(dev); | |
4469 | } else { | |
4470 | for (i = 0; i < adapter->num_rx_queues; i++) | |
4471 | xchg(&adapter->rx_ring[i]->xdp_prog, adapter->xdp_prog); | |
4472 | } | |
c7aec596 TN |
4473 | |
4474 | if (old_prog) | |
4475 | bpf_prog_put(old_prog); | |
4476 | ||
4477 | return 0; | |
4478 | } | |
4479 | ||
4480 | static int ixgbevf_xdp(struct net_device *dev, struct netdev_bpf *xdp) | |
4481 | { | |
c7aec596 TN |
4482 | switch (xdp->command) { |
4483 | case XDP_SETUP_PROG: | |
4484 | return ixgbevf_xdp_setup(dev, xdp->prog); | |
c7aec596 TN |
4485 | default: |
4486 | return -EINVAL; | |
4487 | } | |
4488 | } | |
4489 | ||
0ac1e8ce | 4490 | static const struct net_device_ops ixgbevf_netdev_ops = { |
c12db769 SH |
4491 | .ndo_open = ixgbevf_open, |
4492 | .ndo_stop = ixgbevf_close, | |
4493 | .ndo_start_xmit = ixgbevf_xmit_frame, | |
4494 | .ndo_set_rx_mode = ixgbevf_set_rx_mode, | |
4197aa7b | 4495 | .ndo_get_stats64 = ixgbevf_get_stats, |
92915f71 | 4496 | .ndo_validate_addr = eth_validate_addr, |
c12db769 SH |
4497 | .ndo_set_mac_address = ixgbevf_set_mac, |
4498 | .ndo_change_mtu = ixgbevf_change_mtu, | |
4499 | .ndo_tx_timeout = ixgbevf_tx_timeout, | |
c12db769 SH |
4500 | .ndo_vlan_rx_add_vid = ixgbevf_vlan_rx_add_vid, |
4501 | .ndo_vlan_rx_kill_vid = ixgbevf_vlan_rx_kill_vid, | |
b83e3010 | 4502 | .ndo_features_check = ixgbevf_features_check, |
c7aec596 | 4503 | .ndo_bpf = ixgbevf_xdp, |
92915f71 | 4504 | }; |
92915f71 GR |
4505 | |
4506 | static void ixgbevf_assign_netdev_ops(struct net_device *dev) | |
4507 | { | |
0ac1e8ce | 4508 | dev->netdev_ops = &ixgbevf_netdev_ops; |
92915f71 GR |
4509 | ixgbevf_set_ethtool_ops(dev); |
4510 | dev->watchdog_timeo = 5 * HZ; | |
4511 | } | |
4512 | ||
4513 | /** | |
4514 | * ixgbevf_probe - Device Initialization Routine | |
4515 | * @pdev: PCI device information struct | |
4516 | * @ent: entry in ixgbevf_pci_tbl | |
4517 | * | |
4518 | * Returns 0 on success, negative on failure | |
4519 | * | |
4520 | * ixgbevf_probe initializes an adapter identified by a pci_dev structure. | |
4521 | * The OS initialization, configuring of the adapter private structure, | |
4522 | * and a hardware reset occur. | |
4523 | **/ | |
1dd06ae8 | 4524 | static int ixgbevf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
92915f71 GR |
4525 | { |
4526 | struct net_device *netdev; | |
4527 | struct ixgbevf_adapter *adapter = NULL; | |
4528 | struct ixgbe_hw *hw = NULL; | |
4529 | const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data]; | |
0333464f | 4530 | bool disable_dev = false; |
90b83d01 | 4531 | int err; |
92915f71 GR |
4532 | |
4533 | err = pci_enable_device(pdev); | |
4534 | if (err) | |
4535 | return err; | |
4536 | ||
90b83d01 CJ |
4537 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
4538 | if (err) { | |
4539 | dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); | |
4540 | goto err_dma; | |
92915f71 GR |
4541 | } |
4542 | ||
4543 | err = pci_request_regions(pdev, ixgbevf_driver_name); | |
4544 | if (err) { | |
4545 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
4546 | goto err_pci_reg; | |
4547 | } | |
4548 | ||
4549 | pci_set_master(pdev); | |
4550 | ||
92915f71 GR |
4551 | netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter), |
4552 | MAX_TX_QUEUES); | |
92915f71 GR |
4553 | if (!netdev) { |
4554 | err = -ENOMEM; | |
4555 | goto err_alloc_etherdev; | |
4556 | } | |
4557 | ||
4558 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
4559 | ||
92915f71 GR |
4560 | adapter = netdev_priv(netdev); |
4561 | ||
4562 | adapter->netdev = netdev; | |
4563 | adapter->pdev = pdev; | |
4564 | hw = &adapter->hw; | |
4565 | hw->back = adapter; | |
b3f4d599 | 4566 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
92915f71 | 4567 | |
dec0d8e4 | 4568 | /* call save state here in standalone driver because it relies on |
92915f71 GR |
4569 | * adapter struct to exist, and needs to call netdev_priv |
4570 | */ | |
4571 | pci_save_state(pdev); | |
4572 | ||
4573 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
4574 | pci_resource_len(pdev, 0)); | |
dbf8b0d8 | 4575 | adapter->io_addr = hw->hw_addr; |
92915f71 GR |
4576 | if (!hw->hw_addr) { |
4577 | err = -EIO; | |
4578 | goto err_ioremap; | |
4579 | } | |
4580 | ||
4581 | ixgbevf_assign_netdev_ops(netdev); | |
4582 | ||
dec0d8e4 | 4583 | /* Setup HW API */ |
92915f71 GR |
4584 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); |
4585 | hw->mac.type = ii->mac; | |
4586 | ||
9c9463c2 | 4587 | memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops_legacy, |
f416dfc0 | 4588 | sizeof(struct ixgbe_mbx_operations)); |
92915f71 | 4589 | |
92915f71 GR |
4590 | /* setup the private structure */ |
4591 | err = ixgbevf_sw_init(adapter); | |
1a0d6ae5 DK |
4592 | if (err) |
4593 | goto err_sw_init; | |
4594 | ||
4595 | /* The HW MAC address was set and/or determined in sw_init */ | |
1a0d6ae5 DK |
4596 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
4597 | pr_err("invalid MAC address\n"); | |
4598 | err = -EIO; | |
4599 | goto err_sw_init; | |
4600 | } | |
92915f71 | 4601 | |
471a76de | 4602 | netdev->hw_features = NETIF_F_SG | |
dec0d8e4 JK |
4603 | NETIF_F_TSO | |
4604 | NETIF_F_TSO6 | | |
cb2b3edb AD |
4605 | NETIF_F_RXCSUM | |
4606 | NETIF_F_HW_CSUM | | |
4607 | NETIF_F_SCTP_CRC; | |
471a76de | 4608 | |
b83e3010 AD |
4609 | #define IXGBEVF_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ |
4610 | NETIF_F_GSO_GRE_CSUM | \ | |
7e13318d | 4611 | NETIF_F_GSO_IPXIP4 | \ |
bf2d1df3 | 4612 | NETIF_F_GSO_IPXIP6 | \ |
b83e3010 AD |
4613 | NETIF_F_GSO_UDP_TUNNEL | \ |
4614 | NETIF_F_GSO_UDP_TUNNEL_CSUM) | |
92915f71 | 4615 | |
b83e3010 AD |
4616 | netdev->gso_partial_features = IXGBEVF_GSO_PARTIAL_FEATURES; |
4617 | netdev->hw_features |= NETIF_F_GSO_PARTIAL | | |
4618 | IXGBEVF_GSO_PARTIAL_FEATURES; | |
cb2b3edb | 4619 | |
90b83d01 | 4620 | netdev->features = netdev->hw_features | NETIF_F_HIGHDMA; |
92915f71 | 4621 | |
b83e3010 | 4622 | netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; |
2a20525b SP |
4623 | netdev->mpls_features |= NETIF_F_SG | |
4624 | NETIF_F_TSO | | |
4625 | NETIF_F_TSO6 | | |
4626 | NETIF_F_HW_CSUM; | |
4627 | netdev->mpls_features |= IXGBEVF_GSO_PARTIAL_FEATURES; | |
b83e3010 AD |
4628 | netdev->hw_enc_features |= netdev->vlan_features; |
4629 | ||
4630 | /* set this bit last since it cannot be part of vlan_features */ | |
4631 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | | |
4632 | NETIF_F_HW_VLAN_CTAG_RX | | |
4633 | NETIF_F_HW_VLAN_CTAG_TX; | |
4634 | ||
01789349 | 4635 | netdev->priv_flags |= IFF_UNICAST_FLT; |
66c0e13a | 4636 | netdev->xdp_features = NETDEV_XDP_ACT_BASIC; |
01789349 | 4637 | |
91c527a5 JW |
4638 | /* MTU range: 68 - 1504 or 9710 */ |
4639 | netdev->min_mtu = ETH_MIN_MTU; | |
4640 | switch (adapter->hw.api_version) { | |
4641 | case ixgbe_mbox_api_11: | |
4642 | case ixgbe_mbox_api_12: | |
41e544cd | 4643 | case ixgbe_mbox_api_13: |
7f68d430 | 4644 | case ixgbe_mbox_api_14: |
339f2896 | 4645 | case ixgbe_mbox_api_15: |
91c527a5 JW |
4646 | netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - |
4647 | (ETH_HLEN + ETH_FCS_LEN); | |
4648 | break; | |
4649 | default: | |
4650 | if (adapter->hw.mac.type != ixgbe_mac_82599_vf) | |
4651 | netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - | |
4652 | (ETH_HLEN + ETH_FCS_LEN); | |
4653 | else | |
4654 | netdev->max_mtu = ETH_DATA_LEN + ETH_FCS_LEN; | |
4655 | break; | |
4656 | } | |
4657 | ||
ea699569 MR |
4658 | if (IXGBE_REMOVED(hw->hw_addr)) { |
4659 | err = -EIO; | |
4660 | goto err_sw_init; | |
4661 | } | |
9ac5c5cc | 4662 | |
26566eae | 4663 | timer_setup(&adapter->service_timer, ixgbevf_service_timer, 0); |
9ac5c5cc ET |
4664 | |
4665 | INIT_WORK(&adapter->service_task, ixgbevf_service_task); | |
4666 | set_bit(__IXGBEVF_SERVICE_INITED, &adapter->state); | |
4667 | clear_bit(__IXGBEVF_SERVICE_SCHED, &adapter->state); | |
92915f71 GR |
4668 | |
4669 | err = ixgbevf_init_interrupt_scheme(adapter); | |
4670 | if (err) | |
4671 | goto err_sw_init; | |
4672 | ||
92915f71 GR |
4673 | strcpy(netdev->name, "eth%d"); |
4674 | ||
4675 | err = register_netdev(netdev); | |
4676 | if (err) | |
4677 | goto err_register; | |
4678 | ||
0333464f | 4679 | pci_set_drvdata(pdev, netdev); |
5d426ad1 | 4680 | netif_carrier_off(netdev); |
7f68d430 | 4681 | ixgbevf_init_ipsec_offload(adapter); |
5d426ad1 | 4682 | |
33bd9f60 GR |
4683 | ixgbevf_init_last_counter_stats(adapter); |
4684 | ||
47068b0d ET |
4685 | /* print the VF info */ |
4686 | dev_info(&pdev->dev, "%pM\n", netdev->dev_addr); | |
4687 | dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type); | |
92915f71 | 4688 | |
47068b0d ET |
4689 | switch (hw->mac.type) { |
4690 | case ixgbe_mac_X550_vf: | |
4691 | dev_info(&pdev->dev, "Intel(R) X550 Virtual Function\n"); | |
4692 | break; | |
4693 | case ixgbe_mac_X540_vf: | |
4694 | dev_info(&pdev->dev, "Intel(R) X540 Virtual Function\n"); | |
4695 | break; | |
4696 | case ixgbe_mac_82599_vf: | |
4697 | default: | |
4698 | dev_info(&pdev->dev, "Intel(R) 82599 Virtual Function\n"); | |
4699 | break; | |
4700 | } | |
92915f71 | 4701 | |
92915f71 GR |
4702 | return 0; |
4703 | ||
4704 | err_register: | |
0ac1e8ce | 4705 | ixgbevf_clear_interrupt_scheme(adapter); |
92915f71 GR |
4706 | err_sw_init: |
4707 | ixgbevf_reset_interrupt_capability(adapter); | |
dbf8b0d8 | 4708 | iounmap(adapter->io_addr); |
e60ae003 | 4709 | kfree(adapter->rss_key); |
92915f71 | 4710 | err_ioremap: |
0333464f | 4711 | disable_dev = !test_and_set_bit(__IXGBEVF_DISABLED, &adapter->state); |
92915f71 GR |
4712 | free_netdev(netdev); |
4713 | err_alloc_etherdev: | |
4714 | pci_release_regions(pdev); | |
4715 | err_pci_reg: | |
4716 | err_dma: | |
0333464f | 4717 | if (!adapter || disable_dev) |
bc0c7151 | 4718 | pci_disable_device(pdev); |
92915f71 GR |
4719 | return err; |
4720 | } | |
4721 | ||
4722 | /** | |
4723 | * ixgbevf_remove - Device Removal Routine | |
4724 | * @pdev: PCI device information struct | |
4725 | * | |
4726 | * ixgbevf_remove is called by the PCI subsystem to alert the driver | |
4727 | * that it should release a PCI device. The could be caused by a | |
4728 | * Hot-Plug event, or because the driver is going to be removed from | |
4729 | * memory. | |
4730 | **/ | |
9f9a12f8 | 4731 | static void ixgbevf_remove(struct pci_dev *pdev) |
92915f71 GR |
4732 | { |
4733 | struct net_device *netdev = pci_get_drvdata(pdev); | |
0333464f ET |
4734 | struct ixgbevf_adapter *adapter; |
4735 | bool disable_dev; | |
4736 | ||
4737 | if (!netdev) | |
4738 | return; | |
4739 | ||
4740 | adapter = netdev_priv(netdev); | |
92915f71 | 4741 | |
2e7cfbdd | 4742 | set_bit(__IXGBEVF_REMOVING, &adapter->state); |
9ac5c5cc | 4743 | cancel_work_sync(&adapter->service_task); |
92915f71 | 4744 | |
fd13a9ab | 4745 | if (netdev->reg_state == NETREG_REGISTERED) |
92915f71 | 4746 | unregister_netdev(netdev); |
92915f71 | 4747 | |
7f68d430 | 4748 | ixgbevf_stop_ipsec_offload(adapter); |
0ac1e8ce | 4749 | ixgbevf_clear_interrupt_scheme(adapter); |
92915f71 GR |
4750 | ixgbevf_reset_interrupt_capability(adapter); |
4751 | ||
dbf8b0d8 | 4752 | iounmap(adapter->io_addr); |
92915f71 GR |
4753 | pci_release_regions(pdev); |
4754 | ||
4755 | hw_dbg(&adapter->hw, "Remove complete\n"); | |
4756 | ||
e60ae003 | 4757 | kfree(adapter->rss_key); |
0333464f | 4758 | disable_dev = !test_and_set_bit(__IXGBEVF_DISABLED, &adapter->state); |
92915f71 GR |
4759 | free_netdev(netdev); |
4760 | ||
0333464f | 4761 | if (disable_dev) |
bc0c7151 | 4762 | pci_disable_device(pdev); |
92915f71 GR |
4763 | } |
4764 | ||
9f19f31d AD |
4765 | /** |
4766 | * ixgbevf_io_error_detected - called when PCI error is detected | |
4767 | * @pdev: Pointer to PCI device | |
4768 | * @state: The current pci connection state | |
4769 | * | |
4770 | * This function is called after a PCI bus error affecting | |
4771 | * this device has been detected. | |
dec0d8e4 | 4772 | **/ |
9f19f31d AD |
4773 | static pci_ers_result_t ixgbevf_io_error_detected(struct pci_dev *pdev, |
4774 | pci_channel_state_t state) | |
4775 | { | |
4776 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4777 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
4778 | ||
9ac5c5cc | 4779 | if (!test_bit(__IXGBEVF_SERVICE_INITED, &adapter->state)) |
ea699569 MR |
4780 | return PCI_ERS_RESULT_DISCONNECT; |
4781 | ||
bc0c7151 | 4782 | rtnl_lock(); |
9f19f31d AD |
4783 | netif_device_detach(netdev); |
4784 | ||
b212d815 MR |
4785 | if (netif_running(netdev)) |
4786 | ixgbevf_close_suspend(adapter); | |
4787 | ||
bc0c7151 MR |
4788 | if (state == pci_channel_io_perm_failure) { |
4789 | rtnl_unlock(); | |
9f19f31d | 4790 | return PCI_ERS_RESULT_DISCONNECT; |
bc0c7151 | 4791 | } |
9f19f31d | 4792 | |
bc0c7151 MR |
4793 | if (!test_and_set_bit(__IXGBEVF_DISABLED, &adapter->state)) |
4794 | pci_disable_device(pdev); | |
4795 | rtnl_unlock(); | |
9f19f31d | 4796 | |
8bfb7869 | 4797 | /* Request a slot reset. */ |
9f19f31d AD |
4798 | return PCI_ERS_RESULT_NEED_RESET; |
4799 | } | |
4800 | ||
4801 | /** | |
4802 | * ixgbevf_io_slot_reset - called after the pci bus has been reset. | |
4803 | * @pdev: Pointer to PCI device | |
4804 | * | |
4805 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4806 | * resembles the first-half of the ixgbevf_resume routine. | |
dec0d8e4 | 4807 | **/ |
9f19f31d AD |
4808 | static pci_ers_result_t ixgbevf_io_slot_reset(struct pci_dev *pdev) |
4809 | { | |
4810 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4811 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
4812 | ||
4813 | if (pci_enable_device_mem(pdev)) { | |
4814 | dev_err(&pdev->dev, | |
4815 | "Cannot re-enable PCI device after reset.\n"); | |
4816 | return PCI_ERS_RESULT_DISCONNECT; | |
4817 | } | |
4818 | ||
26403b7f | 4819 | adapter->hw.hw_addr = adapter->io_addr; |
4e857c58 | 4820 | smp_mb__before_atomic(); |
bc0c7151 | 4821 | clear_bit(__IXGBEVF_DISABLED, &adapter->state); |
9f19f31d AD |
4822 | pci_set_master(pdev); |
4823 | ||
4824 | ixgbevf_reset(adapter); | |
4825 | ||
4826 | return PCI_ERS_RESULT_RECOVERED; | |
4827 | } | |
4828 | ||
4829 | /** | |
4830 | * ixgbevf_io_resume - called when traffic can start flowing again. | |
4831 | * @pdev: Pointer to PCI device | |
4832 | * | |
4833 | * This callback is called when the error recovery driver tells us that | |
4834 | * its OK to resume normal operation. Implementation resembles the | |
4835 | * second-half of the ixgbevf_resume routine. | |
dec0d8e4 | 4836 | **/ |
9f19f31d AD |
4837 | static void ixgbevf_io_resume(struct pci_dev *pdev) |
4838 | { | |
4839 | struct net_device *netdev = pci_get_drvdata(pdev); | |
9f19f31d | 4840 | |
b19cf6ee | 4841 | rtnl_lock(); |
9f19f31d | 4842 | if (netif_running(netdev)) |
b19cf6ee | 4843 | ixgbevf_open(netdev); |
9f19f31d AD |
4844 | |
4845 | netif_device_attach(netdev); | |
b19cf6ee | 4846 | rtnl_unlock(); |
9f19f31d AD |
4847 | } |
4848 | ||
4849 | /* PCI Error Recovery (ERS) */ | |
3646f0e5 | 4850 | static const struct pci_error_handlers ixgbevf_err_handler = { |
9f19f31d AD |
4851 | .error_detected = ixgbevf_io_error_detected, |
4852 | .slot_reset = ixgbevf_io_slot_reset, | |
4853 | .resume = ixgbevf_io_resume, | |
4854 | }; | |
4855 | ||
75a3f93b | 4856 | static DEFINE_SIMPLE_DEV_PM_OPS(ixgbevf_pm_ops, ixgbevf_suspend, ixgbevf_resume); |
bac66317 | 4857 | |
92915f71 | 4858 | static struct pci_driver ixgbevf_driver = { |
dec0d8e4 JK |
4859 | .name = ixgbevf_driver_name, |
4860 | .id_table = ixgbevf_pci_tbl, | |
4861 | .probe = ixgbevf_probe, | |
4862 | .remove = ixgbevf_remove, | |
bac66317 | 4863 | |
0ac1e8ce | 4864 | /* Power Management Hooks */ |
75a3f93b | 4865 | .driver.pm = pm_sleep_ptr(&ixgbevf_pm_ops), |
bac66317 | 4866 | |
dec0d8e4 JK |
4867 | .shutdown = ixgbevf_shutdown, |
4868 | .err_handler = &ixgbevf_err_handler | |
92915f71 GR |
4869 | }; |
4870 | ||
4871 | /** | |
65d676c8 | 4872 | * ixgbevf_init_module - Driver Registration Routine |
92915f71 | 4873 | * |
65d676c8 | 4874 | * ixgbevf_init_module is the first routine called when the driver is |
92915f71 GR |
4875 | * loaded. All it does is register with the PCI subsystem. |
4876 | **/ | |
4877 | static int __init ixgbevf_init_module(void) | |
4878 | { | |
8cfa238a SX |
4879 | int err; |
4880 | ||
34a2a3b8 | 4881 | pr_info("%s\n", ixgbevf_driver_string); |
dbd9636e | 4882 | pr_info("%s\n", ixgbevf_copyright); |
40a13e24 MR |
4883 | ixgbevf_wq = create_singlethread_workqueue(ixgbevf_driver_name); |
4884 | if (!ixgbevf_wq) { | |
4885 | pr_err("%s: Failed to create workqueue\n", ixgbevf_driver_name); | |
4886 | return -ENOMEM; | |
4887 | } | |
92915f71 | 4888 | |
8cfa238a SX |
4889 | err = pci_register_driver(&ixgbevf_driver); |
4890 | if (err) { | |
4891 | destroy_workqueue(ixgbevf_wq); | |
4892 | return err; | |
4893 | } | |
4894 | ||
4895 | return 0; | |
92915f71 GR |
4896 | } |
4897 | ||
4898 | module_init(ixgbevf_init_module); | |
4899 | ||
4900 | /** | |
65d676c8 | 4901 | * ixgbevf_exit_module - Driver Exit Cleanup Routine |
92915f71 | 4902 | * |
65d676c8 | 4903 | * ixgbevf_exit_module is called just before the driver is removed |
92915f71 GR |
4904 | * from memory. |
4905 | **/ | |
4906 | static void __exit ixgbevf_exit_module(void) | |
4907 | { | |
4908 | pci_unregister_driver(&ixgbevf_driver); | |
40a13e24 MR |
4909 | if (ixgbevf_wq) { |
4910 | destroy_workqueue(ixgbevf_wq); | |
4911 | ixgbevf_wq = NULL; | |
4912 | } | |
92915f71 GR |
4913 | } |
4914 | ||
4915 | #ifdef DEBUG | |
4916 | /** | |
65d676c8 | 4917 | * ixgbevf_get_hw_dev_name - return device name string |
92915f71 | 4918 | * used by hardware layer to print debugging information |
e23cf38f | 4919 | * @hw: pointer to private hardware struct |
92915f71 GR |
4920 | **/ |
4921 | char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw) | |
4922 | { | |
4923 | struct ixgbevf_adapter *adapter = hw->back; | |
dec0d8e4 | 4924 | |
92915f71 GR |
4925 | return adapter->netdev->name; |
4926 | } | |
4927 | ||
4928 | #endif | |
4929 | module_exit(ixgbevf_exit_module); | |
4930 | ||
4931 | /* ixgbevf_main.c */ |