1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
29 /******************************************************************************
30 Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code
31 ******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
35 #include <linux/netdevice.h>
36 #include <linux/vmalloc.h>
37 #include <linux/string.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
50 char ixgbevf_driver_name[] = "ixgbevf";
51 static const char ixgbevf_driver_string[] =
52 "Intel(R) 82599 Virtual Function";
54 #define DRV_VERSION "1.0.0-k0"
55 const char ixgbevf_driver_version[] = DRV_VERSION;
56 static char ixgbevf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
58 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
59 [board_82599_vf] = &ixgbevf_vf_info,
62 /* ixgbevf_pci_tbl - PCI Device ID Table
64 * Wildcard entries (PCI_ANY_ID) should come last
65 * Last entry must be all 0s
67 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
68 * Class, Class Mask, private data (not used) }
70 static struct pci_device_id ixgbevf_pci_tbl[] = {
71 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF),
74 /* required last entry */
77 MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl);
79 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
80 MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
81 MODULE_LICENSE("GPL");
82 MODULE_VERSION(DRV_VERSION);
84 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
87 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector);
88 static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
91 static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw,
92 struct ixgbevf_ring *rx_ring,
96 * Force memory writes to complete before letting h/w
97 * know there are new descriptors to fetch. (Only
98 * applicable for weak-ordered memory model archs,
102 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val);
106 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
107 * @adapter: pointer to adapter struct
108 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
109 * @queue: queue to map the corresponding interrupt to
110 * @msix_vector: the vector to map to the corresponding queue
113 static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction,
114 u8 queue, u8 msix_vector)
117 struct ixgbe_hw *hw = &adapter->hw;
118 if (direction == -1) {
120 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
121 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
124 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
126 /* tx or rx causes */
127 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
128 index = ((16 * (queue & 1)) + (8 * direction));
129 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1));
130 ivar &= ~(0xFF << index);
131 ivar |= (msix_vector << index);
132 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar);
136 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter,
137 struct ixgbevf_tx_buffer
140 if (tx_buffer_info->dma) {
141 if (tx_buffer_info->mapped_as_page)
142 dma_unmap_page(&adapter->pdev->dev,
144 tx_buffer_info->length,
147 dma_unmap_single(&adapter->pdev->dev,
149 tx_buffer_info->length,
151 tx_buffer_info->dma = 0;
153 if (tx_buffer_info->skb) {
154 dev_kfree_skb_any(tx_buffer_info->skb);
155 tx_buffer_info->skb = NULL;
157 tx_buffer_info->time_stamp = 0;
158 /* tx_buffer_info must be completely set up in the transmit path */
161 static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter,
162 struct ixgbevf_ring *tx_ring,
165 struct ixgbe_hw *hw = &adapter->hw;
168 /* Detect a transmit hang in hardware, this serializes the
169 * check with the clearing of time_stamp and movement of eop */
170 head = readl(hw->hw_addr + tx_ring->head);
171 tail = readl(hw->hw_addr + tx_ring->tail);
172 adapter->detect_tx_hung = false;
173 if ((head != tail) &&
174 tx_ring->tx_buffer_info[eop].time_stamp &&
175 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) {
176 /* detected Tx unit hang */
177 union ixgbe_adv_tx_desc *tx_desc;
178 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
179 printk(KERN_ERR "Detected Tx Unit Hang\n"
181 " TDH, TDT <%x>, <%x>\n"
182 " next_to_use <%x>\n"
183 " next_to_clean <%x>\n"
184 "tx_buffer_info[next_to_clean]\n"
185 " time_stamp <%lx>\n"
187 tx_ring->queue_index,
189 tx_ring->next_to_use, eop,
190 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
197 #define IXGBE_MAX_TXD_PWR 14
198 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
200 /* Tx Descriptors needed, worst case */
201 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
202 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
204 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
205 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
207 #define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD)
210 static void ixgbevf_tx_timeout(struct net_device *netdev);
213 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
214 * @adapter: board private structure
215 * @tx_ring: tx ring to clean
217 static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter,
218 struct ixgbevf_ring *tx_ring)
220 struct net_device *netdev = adapter->netdev;
221 struct ixgbe_hw *hw = &adapter->hw;
222 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
223 struct ixgbevf_tx_buffer *tx_buffer_info;
224 unsigned int i, eop, count = 0;
225 unsigned int total_bytes = 0, total_packets = 0;
227 i = tx_ring->next_to_clean;
228 eop = tx_ring->tx_buffer_info[i].next_to_watch;
229 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
231 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
232 (count < tx_ring->work_limit)) {
233 bool cleaned = false;
234 for ( ; !cleaned; count++) {
236 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
237 tx_buffer_info = &tx_ring->tx_buffer_info[i];
238 cleaned = (i == eop);
239 skb = tx_buffer_info->skb;
241 if (cleaned && skb) {
242 unsigned int segs, bytecount;
244 /* gso_segs is currently only valid for tcp */
245 segs = skb_shinfo(skb)->gso_segs ?: 1;
246 /* multiply data chunks by size of headers */
247 bytecount = ((segs - 1) * skb_headlen(skb)) +
249 total_packets += segs;
250 total_bytes += bytecount;
253 ixgbevf_unmap_and_free_tx_resource(adapter,
256 tx_desc->wb.status = 0;
259 if (i == tx_ring->count)
263 eop = tx_ring->tx_buffer_info[i].next_to_watch;
264 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
267 tx_ring->next_to_clean = i;
269 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
270 if (unlikely(count && netif_carrier_ok(netdev) &&
271 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
272 /* Make sure that anybody stopping the queue after this
273 * sees the new next_to_clean.
277 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
278 !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
279 netif_wake_subqueue(netdev, tx_ring->queue_index);
280 ++adapter->restart_queue;
283 if (netif_queue_stopped(netdev) &&
284 !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
285 netif_wake_queue(netdev);
286 ++adapter->restart_queue;
291 if (adapter->detect_tx_hung) {
292 if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) {
293 /* schedule immediate reset if we believe we hung */
295 "tx hang %d detected, resetting adapter\n",
296 adapter->tx_timeout_count + 1);
297 ixgbevf_tx_timeout(adapter->netdev);
301 /* re-arm the interrupt */
302 if ((count >= tx_ring->work_limit) &&
303 (!test_bit(__IXGBEVF_DOWN, &adapter->state))) {
304 IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx);
307 tx_ring->total_bytes += total_bytes;
308 tx_ring->total_packets += total_packets;
310 adapter->net_stats.tx_bytes += total_bytes;
311 adapter->net_stats.tx_packets += total_packets;
313 return (count < tx_ring->work_limit);
317 * ixgbevf_receive_skb - Send a completed packet up the stack
318 * @q_vector: structure containing interrupt and ring information
319 * @skb: packet to send up
320 * @status: hardware indication of status of receive
321 * @rx_ring: rx descriptor ring (for a specific queue) to setup
322 * @rx_desc: rx descriptor
324 static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
325 struct sk_buff *skb, u8 status,
326 struct ixgbevf_ring *ring,
327 union ixgbe_adv_rx_desc *rx_desc)
329 struct ixgbevf_adapter *adapter = q_vector->adapter;
330 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
331 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
334 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
335 if (adapter->vlgrp && is_vlan)
336 vlan_gro_receive(&q_vector->napi,
340 napi_gro_receive(&q_vector->napi, skb);
342 if (adapter->vlgrp && is_vlan)
343 ret = vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
350 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
351 * @adapter: address of board private structure
352 * @status_err: hardware indication of status of receive
353 * @skb: skb currently being received and modified
355 static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter,
356 u32 status_err, struct sk_buff *skb)
358 skb->ip_summed = CHECKSUM_NONE;
360 /* Rx csum disabled */
361 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
364 /* if IP and error */
365 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
366 (status_err & IXGBE_RXDADV_ERR_IPE)) {
367 adapter->hw_csum_rx_error++;
371 if (!(status_err & IXGBE_RXD_STAT_L4CS))
374 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
375 adapter->hw_csum_rx_error++;
379 /* It must be a TCP or UDP packet with a valid checksum */
380 skb->ip_summed = CHECKSUM_UNNECESSARY;
381 adapter->hw_csum_rx_good++;
385 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
386 * @adapter: address of board private structure
388 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter,
389 struct ixgbevf_ring *rx_ring,
392 struct pci_dev *pdev = adapter->pdev;
393 union ixgbe_adv_rx_desc *rx_desc;
394 struct ixgbevf_rx_buffer *bi;
397 unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN;
399 i = rx_ring->next_to_use;
400 bi = &rx_ring->rx_buffer_info[i];
402 while (cleaned_count--) {
403 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
406 (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) {
408 bi->page = netdev_alloc_page(adapter->netdev);
410 adapter->alloc_rx_page_failed++;
415 /* use a half page if we're re-using */
416 bi->page_offset ^= (PAGE_SIZE / 2);
419 bi->page_dma = dma_map_page(&pdev->dev, bi->page,
427 skb = netdev_alloc_skb(adapter->netdev,
431 adapter->alloc_rx_buff_failed++;
436 * Make buffer alignment 2 beyond a 16 byte boundary
437 * this will result in a 16 byte aligned IP header after
438 * the 14 byte MAC header is removed
440 skb_reserve(skb, NET_IP_ALIGN);
445 bi->dma = dma_map_single(&pdev->dev, skb->data,
449 /* Refresh the desc even if buffer_addrs didn't change because
450 * each write-back erases this info. */
451 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
452 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
453 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
455 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
459 if (i == rx_ring->count)
461 bi = &rx_ring->rx_buffer_info[i];
465 if (rx_ring->next_to_use != i) {
466 rx_ring->next_to_use = i;
468 i = (rx_ring->count - 1);
470 ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i);
474 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter,
478 struct ixgbe_hw *hw = &adapter->hw;
480 mask = (qmask & 0xFFFFFFFF);
481 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
484 static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
486 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
489 static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
491 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
494 static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
495 struct ixgbevf_ring *rx_ring,
496 int *work_done, int work_to_do)
498 struct ixgbevf_adapter *adapter = q_vector->adapter;
499 struct pci_dev *pdev = adapter->pdev;
500 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
501 struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer;
506 bool cleaned = false;
507 int cleaned_count = 0;
508 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
510 i = rx_ring->next_to_clean;
511 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
512 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
513 rx_buffer_info = &rx_ring->rx_buffer_info[i];
515 while (staterr & IXGBE_RXD_STAT_DD) {
517 if (*work_done >= work_to_do)
521 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
522 hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc));
523 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
524 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
525 if (hdr_info & IXGBE_RXDADV_SPH)
526 adapter->rx_hdr_split++;
527 if (len > IXGBEVF_RX_HDR_SIZE)
528 len = IXGBEVF_RX_HDR_SIZE;
529 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
531 len = le16_to_cpu(rx_desc->wb.upper.length);
534 skb = rx_buffer_info->skb;
535 prefetch(skb->data - NET_IP_ALIGN);
536 rx_buffer_info->skb = NULL;
538 if (rx_buffer_info->dma) {
539 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
542 rx_buffer_info->dma = 0;
547 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
548 PAGE_SIZE / 2, DMA_FROM_DEVICE);
549 rx_buffer_info->page_dma = 0;
550 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
551 rx_buffer_info->page,
552 rx_buffer_info->page_offset,
555 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
556 (page_count(rx_buffer_info->page) != 1))
557 rx_buffer_info->page = NULL;
559 get_page(rx_buffer_info->page);
561 skb->len += upper_len;
562 skb->data_len += upper_len;
563 skb->truesize += upper_len;
567 if (i == rx_ring->count)
570 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
574 next_buffer = &rx_ring->rx_buffer_info[i];
576 if (!(staterr & IXGBE_RXD_STAT_EOP)) {
577 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
578 rx_buffer_info->skb = next_buffer->skb;
579 rx_buffer_info->dma = next_buffer->dma;
580 next_buffer->skb = skb;
581 next_buffer->dma = 0;
583 skb->next = next_buffer->skb;
584 skb->next->prev = skb;
586 adapter->non_eop_descs++;
590 /* ERR_MASK will only have valid bits if EOP set */
591 if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
592 dev_kfree_skb_irq(skb);
596 ixgbevf_rx_checksum(adapter, staterr, skb);
598 /* probably a little skewed due to removing CRC */
599 total_rx_bytes += skb->len;
603 * Work around issue of some types of VM to VM loop back
604 * packets not getting split correctly
606 if (staterr & IXGBE_RXD_STAT_LB) {
607 u32 header_fixup_len = skb_headlen(skb);
608 if (header_fixup_len < 14)
609 skb_push(skb, header_fixup_len);
611 skb->protocol = eth_type_trans(skb, adapter->netdev);
613 ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
616 rx_desc->wb.upper.status_error = 0;
618 /* return some buffers to hardware, one at a time is too slow */
619 if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) {
620 ixgbevf_alloc_rx_buffers(adapter, rx_ring,
625 /* use prefetched values */
627 rx_buffer_info = &rx_ring->rx_buffer_info[i];
629 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
632 rx_ring->next_to_clean = i;
633 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
636 ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
638 rx_ring->total_packets += total_rx_packets;
639 rx_ring->total_bytes += total_rx_bytes;
640 adapter->net_stats.rx_bytes += total_rx_bytes;
641 adapter->net_stats.rx_packets += total_rx_packets;
647 * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine
648 * @napi: napi struct with our devices info in it
649 * @budget: amount of work driver is allowed to do this pass, in packets
651 * This function is optimized for cleaning one queue only on a single
654 static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget)
656 struct ixgbevf_q_vector *q_vector =
657 container_of(napi, struct ixgbevf_q_vector, napi);
658 struct ixgbevf_adapter *adapter = q_vector->adapter;
659 struct ixgbevf_ring *rx_ring = NULL;
663 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
664 rx_ring = &(adapter->rx_ring[r_idx]);
666 ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
668 /* If all Rx work done, exit the polling mode */
669 if (work_done < budget) {
671 if (adapter->itr_setting & 1)
672 ixgbevf_set_itr_msix(q_vector);
673 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
674 ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx);
681 * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine
682 * @napi: napi struct with our devices info in it
683 * @budget: amount of work driver is allowed to do this pass, in packets
685 * This function will clean more than one rx queue associated with a
688 static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget)
690 struct ixgbevf_q_vector *q_vector =
691 container_of(napi, struct ixgbevf_q_vector, napi);
692 struct ixgbevf_adapter *adapter = q_vector->adapter;
693 struct ixgbevf_ring *rx_ring = NULL;
694 int work_done = 0, i;
698 /* attempt to distribute budget to each queue fairly, but don't allow
699 * the budget to go below 1 because we'll exit polling */
700 budget /= (q_vector->rxr_count ?: 1);
701 budget = max(budget, 1);
702 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
703 for (i = 0; i < q_vector->rxr_count; i++) {
704 rx_ring = &(adapter->rx_ring[r_idx]);
705 ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
706 enable_mask |= rx_ring->v_idx;
707 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
711 #ifndef HAVE_NETDEV_NAPI_LIST
712 if (!netif_running(adapter->netdev))
716 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
717 rx_ring = &(adapter->rx_ring[r_idx]);
719 /* If all Rx work done, exit the polling mode */
720 if (work_done < budget) {
722 if (adapter->itr_setting & 1)
723 ixgbevf_set_itr_msix(q_vector);
724 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
725 ixgbevf_irq_enable_queues(adapter, enable_mask);
733 * ixgbevf_configure_msix - Configure MSI-X hardware
734 * @adapter: board private structure
736 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
739 static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter)
741 struct ixgbevf_q_vector *q_vector;
742 struct ixgbe_hw *hw = &adapter->hw;
743 int i, j, q_vectors, v_idx, r_idx;
746 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
749 * Populate the IVAR table and set the ITR values to the
750 * corresponding register.
752 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
753 q_vector = adapter->q_vector[v_idx];
754 /* XXX for_each_set_bit(...) */
755 r_idx = find_first_bit(q_vector->rxr_idx,
756 adapter->num_rx_queues);
758 for (i = 0; i < q_vector->rxr_count; i++) {
759 j = adapter->rx_ring[r_idx].reg_idx;
760 ixgbevf_set_ivar(adapter, 0, j, v_idx);
761 r_idx = find_next_bit(q_vector->rxr_idx,
762 adapter->num_rx_queues,
765 r_idx = find_first_bit(q_vector->txr_idx,
766 adapter->num_tx_queues);
768 for (i = 0; i < q_vector->txr_count; i++) {
769 j = adapter->tx_ring[r_idx].reg_idx;
770 ixgbevf_set_ivar(adapter, 1, j, v_idx);
771 r_idx = find_next_bit(q_vector->txr_idx,
772 adapter->num_tx_queues,
776 /* if this is a tx only vector halve the interrupt rate */
777 if (q_vector->txr_count && !q_vector->rxr_count)
778 q_vector->eitr = (adapter->eitr_param >> 1);
779 else if (q_vector->rxr_count)
781 q_vector->eitr = adapter->eitr_param;
783 ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr);
786 ixgbevf_set_ivar(adapter, -1, 1, v_idx);
788 /* set up to autoclear timer, and the vectors */
789 mask = IXGBE_EIMS_ENABLE_MASK;
790 mask &= ~IXGBE_EIMS_OTHER;
791 IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
798 latency_invalid = 255
802 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
803 * @adapter: pointer to adapter
804 * @eitr: eitr setting (ints per sec) to give last timeslice
805 * @itr_setting: current throttle rate in ints/second
806 * @packets: the number of packets during this measurement interval
807 * @bytes: the number of bytes during this measurement interval
809 * Stores a new ITR value based on packets and byte
810 * counts during the last interrupt. The advantage of per interrupt
811 * computation is faster updates and more accurate ITR for the current
812 * traffic pattern. Constants in this function were computed
813 * based on theoretical maximum wire speed and thresholds were set based
814 * on testing data as well as attempting to minimize response time
815 * while increasing bulk throughput.
817 static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter,
818 u32 eitr, u8 itr_setting,
819 int packets, int bytes)
821 unsigned int retval = itr_setting;
826 goto update_itr_done;
829 /* simple throttlerate management
830 * 0-20MB/s lowest (100000 ints/s)
831 * 20-100MB/s low (20000 ints/s)
832 * 100-1249MB/s bulk (8000 ints/s)
834 /* what was last interrupt timeslice? */
835 timepassed_us = 1000000/eitr;
836 bytes_perint = bytes / timepassed_us; /* bytes/usec */
838 switch (itr_setting) {
840 if (bytes_perint > adapter->eitr_low)
841 retval = low_latency;
844 if (bytes_perint > adapter->eitr_high)
845 retval = bulk_latency;
846 else if (bytes_perint <= adapter->eitr_low)
847 retval = lowest_latency;
850 if (bytes_perint <= adapter->eitr_high)
851 retval = low_latency;
860 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
861 * @adapter: pointer to adapter struct
862 * @v_idx: vector index into q_vector array
863 * @itr_reg: new value to be written in *register* format, not ints/s
865 * This function is made to be called by ethtool and by the driver
866 * when it needs to update VTEITR registers at runtime. Hardware
867 * specific quirks/differences are taken care of here.
869 static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
872 struct ixgbe_hw *hw = &adapter->hw;
874 itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg);
877 * set the WDIS bit to not clear the timer bits and cause an
878 * immediate assertion of the interrupt
880 itr_reg |= IXGBE_EITR_CNT_WDIS;
882 IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg);
885 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector)
887 struct ixgbevf_adapter *adapter = q_vector->adapter;
889 u8 current_itr, ret_itr;
890 int i, r_idx, v_idx = q_vector->v_idx;
891 struct ixgbevf_ring *rx_ring, *tx_ring;
893 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
894 for (i = 0; i < q_vector->txr_count; i++) {
895 tx_ring = &(adapter->tx_ring[r_idx]);
896 ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
898 tx_ring->total_packets,
899 tx_ring->total_bytes);
900 /* if the result for this queue would decrease interrupt
901 * rate for this vector then use that result */
902 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
903 q_vector->tx_itr - 1 : ret_itr);
904 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
908 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
909 for (i = 0; i < q_vector->rxr_count; i++) {
910 rx_ring = &(adapter->rx_ring[r_idx]);
911 ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
913 rx_ring->total_packets,
914 rx_ring->total_bytes);
915 /* if the result for this queue would decrease interrupt
916 * rate for this vector then use that result */
917 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
918 q_vector->rx_itr - 1 : ret_itr);
919 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
923 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
925 switch (current_itr) {
926 /* counts and packets in update_itr are dependent on these numbers */
931 new_itr = 20000; /* aka hwitr = ~200 */
939 if (new_itr != q_vector->eitr) {
942 /* save the algorithm value here, not the smoothed one */
943 q_vector->eitr = new_itr;
944 /* do an exponential smoothing */
945 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
946 itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
947 ixgbevf_write_eitr(adapter, v_idx, itr_reg);
953 static irqreturn_t ixgbevf_msix_mbx(int irq, void *data)
955 struct net_device *netdev = data;
956 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
957 struct ixgbe_hw *hw = &adapter->hw;
961 eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS);
962 IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr);
964 if (!hw->mbx.ops.check_for_ack(hw)) {
966 * checking for the ack clears the PFACK bit. Place
967 * it back in the v2p_mailbox cache so that anyone
968 * polling for an ack will not miss it. Also
969 * avoid the read below because the code to read
970 * the mailbox will also clear the ack bit. This was
971 * causing lost acks. Just cache the bit and exit
974 hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFACK;
978 /* Not an ack interrupt, go ahead and read the message */
979 hw->mbx.ops.read(hw, &msg, 1);
981 if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG)
982 mod_timer(&adapter->watchdog_timer,
983 round_jiffies(jiffies + 1));
989 static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data)
991 struct ixgbevf_q_vector *q_vector = data;
992 struct ixgbevf_adapter *adapter = q_vector->adapter;
993 struct ixgbevf_ring *tx_ring;
996 if (!q_vector->txr_count)
999 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1000 for (i = 0; i < q_vector->txr_count; i++) {
1001 tx_ring = &(adapter->tx_ring[r_idx]);
1002 tx_ring->total_bytes = 0;
1003 tx_ring->total_packets = 0;
1004 ixgbevf_clean_tx_irq(adapter, tx_ring);
1005 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1009 if (adapter->itr_setting & 1)
1010 ixgbevf_set_itr_msix(q_vector);
1016 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1018 * @data: pointer to our q_vector struct for this interrupt vector
1020 static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data)
1022 struct ixgbevf_q_vector *q_vector = data;
1023 struct ixgbevf_adapter *adapter = q_vector->adapter;
1024 struct ixgbe_hw *hw = &adapter->hw;
1025 struct ixgbevf_ring *rx_ring;
1029 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1030 for (i = 0; i < q_vector->rxr_count; i++) {
1031 rx_ring = &(adapter->rx_ring[r_idx]);
1032 rx_ring->total_bytes = 0;
1033 rx_ring->total_packets = 0;
1034 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1038 if (!q_vector->rxr_count)
1041 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1042 rx_ring = &(adapter->rx_ring[r_idx]);
1043 /* disable interrupts on this vector only */
1044 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx);
1045 napi_schedule(&q_vector->napi);
1051 static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data)
1053 ixgbevf_msix_clean_rx(irq, data);
1054 ixgbevf_msix_clean_tx(irq, data);
1059 static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx,
1062 struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
1064 set_bit(r_idx, q_vector->rxr_idx);
1065 q_vector->rxr_count++;
1066 a->rx_ring[r_idx].v_idx = 1 << v_idx;
1069 static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx,
1072 struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
1074 set_bit(t_idx, q_vector->txr_idx);
1075 q_vector->txr_count++;
1076 a->tx_ring[t_idx].v_idx = 1 << v_idx;
1080 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
1081 * @adapter: board private structure to initialize
1083 * This function maps descriptor rings to the queue-specific vectors
1084 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1085 * one vector per ring/queue, but on a constrained vector budget, we
1086 * group the rings as "efficiently" as possible. You would add new
1087 * mapping configurations in here.
1089 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter)
1093 int rxr_idx = 0, txr_idx = 0;
1094 int rxr_remaining = adapter->num_rx_queues;
1095 int txr_remaining = adapter->num_tx_queues;
1100 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1103 * The ideal configuration...
1104 * We have enough vectors to map one per queue.
1106 if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
1107 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
1108 map_vector_to_rxq(adapter, v_start, rxr_idx);
1110 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
1111 map_vector_to_txq(adapter, v_start, txr_idx);
1116 * If we don't have enough vectors for a 1-to-1
1117 * mapping, we'll have to group them so there are
1118 * multiple queues per vector.
1120 /* Re-adjusting *qpv takes care of the remainder. */
1121 for (i = v_start; i < q_vectors; i++) {
1122 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
1123 for (j = 0; j < rqpv; j++) {
1124 map_vector_to_rxq(adapter, i, rxr_idx);
1129 for (i = v_start; i < q_vectors; i++) {
1130 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
1131 for (j = 0; j < tqpv; j++) {
1132 map_vector_to_txq(adapter, i, txr_idx);
1143 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
1144 * @adapter: board private structure
1146 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
1147 * interrupts from the kernel.
1149 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter)
1151 struct net_device *netdev = adapter->netdev;
1152 irqreturn_t (*handler)(int, void *);
1153 int i, vector, q_vectors, err;
1156 /* Decrement for Other and TCP Timer vectors */
1157 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1159 #define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
1160 ? &ixgbevf_msix_clean_many : \
1161 (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \
1162 (_v)->txr_count ? &ixgbevf_msix_clean_tx : \
1164 for (vector = 0; vector < q_vectors; vector++) {
1165 handler = SET_HANDLER(adapter->q_vector[vector]);
1167 if (handler == &ixgbevf_msix_clean_rx) {
1168 sprintf(adapter->name[vector], "%s-%s-%d",
1169 netdev->name, "rx", ri++);
1170 } else if (handler == &ixgbevf_msix_clean_tx) {
1171 sprintf(adapter->name[vector], "%s-%s-%d",
1172 netdev->name, "tx", ti++);
1173 } else if (handler == &ixgbevf_msix_clean_many) {
1174 sprintf(adapter->name[vector], "%s-%s-%d",
1175 netdev->name, "TxRx", vector);
1177 /* skip this unused q_vector */
1180 err = request_irq(adapter->msix_entries[vector].vector,
1181 handler, 0, adapter->name[vector],
1182 adapter->q_vector[vector]);
1184 hw_dbg(&adapter->hw,
1185 "request_irq failed for MSIX interrupt "
1186 "Error: %d\n", err);
1187 goto free_queue_irqs;
1191 sprintf(adapter->name[vector], "%s:mbx", netdev->name);
1192 err = request_irq(adapter->msix_entries[vector].vector,
1193 &ixgbevf_msix_mbx, 0, adapter->name[vector], netdev);
1195 hw_dbg(&adapter->hw,
1196 "request_irq for msix_mbx failed: %d\n", err);
1197 goto free_queue_irqs;
1203 for (i = vector - 1; i >= 0; i--)
1204 free_irq(adapter->msix_entries[--vector].vector,
1205 &(adapter->q_vector[i]));
1206 pci_disable_msix(adapter->pdev);
1207 kfree(adapter->msix_entries);
1208 adapter->msix_entries = NULL;
1212 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter)
1214 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1216 for (i = 0; i < q_vectors; i++) {
1217 struct ixgbevf_q_vector *q_vector = adapter->q_vector[i];
1218 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
1219 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
1220 q_vector->rxr_count = 0;
1221 q_vector->txr_count = 0;
1222 q_vector->eitr = adapter->eitr_param;
1227 * ixgbevf_request_irq - initialize interrupts
1228 * @adapter: board private structure
1230 * Attempts to configure interrupts using the best available
1231 * capabilities of the hardware and kernel.
1233 static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter)
1237 err = ixgbevf_request_msix_irqs(adapter);
1240 hw_dbg(&adapter->hw,
1241 "request_irq failed, Error %d\n", err);
1246 static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter)
1248 struct net_device *netdev = adapter->netdev;
1251 q_vectors = adapter->num_msix_vectors;
1255 free_irq(adapter->msix_entries[i].vector, netdev);
1258 for (; i >= 0; i--) {
1259 free_irq(adapter->msix_entries[i].vector,
1260 adapter->q_vector[i]);
1263 ixgbevf_reset_q_vectors(adapter);
1267 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
1268 * @adapter: board private structure
1270 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter)
1273 struct ixgbe_hw *hw = &adapter->hw;
1275 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0);
1277 IXGBE_WRITE_FLUSH(hw);
1279 for (i = 0; i < adapter->num_msix_vectors; i++)
1280 synchronize_irq(adapter->msix_entries[i].vector);
1284 * ixgbevf_irq_enable - Enable default interrupt generation settings
1285 * @adapter: board private structure
1287 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter,
1288 bool queues, bool flush)
1290 struct ixgbe_hw *hw = &adapter->hw;
1294 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
1297 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
1300 ixgbevf_irq_enable_queues(adapter, qmask);
1303 IXGBE_WRITE_FLUSH(hw);
1307 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1308 * @adapter: board private structure
1310 * Configure the Tx unit of the MAC after a reset.
1312 static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter)
1315 struct ixgbe_hw *hw = &adapter->hw;
1316 u32 i, j, tdlen, txctrl;
1318 /* Setup the HW Tx Head and Tail descriptor pointers */
1319 for (i = 0; i < adapter->num_tx_queues; i++) {
1320 struct ixgbevf_ring *ring = &adapter->tx_ring[i];
1323 tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
1324 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j),
1325 (tdba & DMA_BIT_MASK(32)));
1326 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32));
1327 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen);
1328 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0);
1329 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0);
1330 adapter->tx_ring[i].head = IXGBE_VFTDH(j);
1331 adapter->tx_ring[i].tail = IXGBE_VFTDT(j);
1332 /* Disable Tx Head Writeback RO bit, since this hoses
1333 * bookkeeping if things aren't delivered in order.
1335 txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j));
1336 txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
1337 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl);
1341 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1343 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index)
1345 struct ixgbevf_ring *rx_ring;
1346 struct ixgbe_hw *hw = &adapter->hw;
1349 rx_ring = &adapter->rx_ring[index];
1351 srrctl = IXGBE_SRRCTL_DROP_EN;
1353 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
1354 u16 bufsz = IXGBEVF_RXBUFFER_2048;
1355 /* grow the amount we can receive on large page machines */
1356 if (bufsz < (PAGE_SIZE / 2))
1357 bufsz = (PAGE_SIZE / 2);
1358 /* cap the bufsz at our largest descriptor size */
1359 bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz);
1361 srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1362 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
1363 srrctl |= ((IXGBEVF_RX_HDR_SIZE <<
1364 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
1365 IXGBE_SRRCTL_BSIZEHDR_MASK);
1367 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
1369 if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
1370 srrctl |= IXGBEVF_RXBUFFER_2048 >>
1371 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1373 srrctl |= rx_ring->rx_buf_len >>
1374 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1376 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl);
1380 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1381 * @adapter: board private structure
1383 * Configure the Rx unit of the MAC after a reset.
1385 static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
1388 struct ixgbe_hw *hw = &adapter->hw;
1389 struct net_device *netdev = adapter->netdev;
1390 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
1395 /* Decide whether to use packet split mode or not */
1396 if (netdev->mtu > ETH_DATA_LEN) {
1397 if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE)
1398 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
1400 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
1402 if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE)
1403 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
1405 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
1408 /* Set the RX buffer length according to the mode */
1409 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
1410 /* PSRTYPE must be initialized in 82599 */
1411 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
1412 IXGBE_PSRTYPE_UDPHDR |
1413 IXGBE_PSRTYPE_IPV4HDR |
1414 IXGBE_PSRTYPE_IPV6HDR |
1415 IXGBE_PSRTYPE_L2HDR;
1416 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
1417 rx_buf_len = IXGBEVF_RX_HDR_SIZE;
1419 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
1420 if (netdev->mtu <= ETH_DATA_LEN)
1421 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1423 rx_buf_len = ALIGN(max_frame, 1024);
1426 rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
1427 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1428 * the Base and Length of the Rx Descriptor Ring */
1429 for (i = 0; i < adapter->num_rx_queues; i++) {
1430 rdba = adapter->rx_ring[i].dma;
1431 j = adapter->rx_ring[i].reg_idx;
1432 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j),
1433 (rdba & DMA_BIT_MASK(32)));
1434 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32));
1435 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen);
1436 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0);
1437 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0);
1438 adapter->rx_ring[i].head = IXGBE_VFRDH(j);
1439 adapter->rx_ring[i].tail = IXGBE_VFRDT(j);
1440 adapter->rx_ring[i].rx_buf_len = rx_buf_len;
1442 ixgbevf_configure_srrctl(adapter, j);
1446 static void ixgbevf_vlan_rx_register(struct net_device *netdev,
1447 struct vlan_group *grp)
1449 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1450 struct ixgbe_hw *hw = &adapter->hw;
1454 adapter->vlgrp = grp;
1456 for (i = 0; i < adapter->num_rx_queues; i++) {
1457 j = adapter->rx_ring[i].reg_idx;
1458 ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
1459 ctrl |= IXGBE_RXDCTL_VME;
1460 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), ctrl);
1464 static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1466 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1467 struct ixgbe_hw *hw = &adapter->hw;
1468 struct net_device *v_netdev;
1470 /* add VID to filter table */
1471 if (hw->mac.ops.set_vfta)
1472 hw->mac.ops.set_vfta(hw, vid, 0, true);
1474 * Copy feature flags from netdev to the vlan netdev for this vid.
1475 * This allows things like TSO to bubble down to our vlan device.
1477 v_netdev = vlan_group_get_device(adapter->vlgrp, vid);
1478 v_netdev->features |= adapter->netdev->features;
1479 vlan_group_set_device(adapter->vlgrp, vid, v_netdev);
1482 static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1484 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1485 struct ixgbe_hw *hw = &adapter->hw;
1487 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
1488 ixgbevf_irq_disable(adapter);
1490 vlan_group_set_device(adapter->vlgrp, vid, NULL);
1492 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
1493 ixgbevf_irq_enable(adapter, true, true);
1495 /* remove VID from filter table */
1496 if (hw->mac.ops.set_vfta)
1497 hw->mac.ops.set_vfta(hw, vid, 0, false);
1500 static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)
1502 ixgbevf_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1504 if (adapter->vlgrp) {
1506 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1507 if (!vlan_group_get_device(adapter->vlgrp, vid))
1509 ixgbevf_vlan_rx_add_vid(adapter->netdev, vid);
1515 * ixgbevf_set_rx_mode - Multicast set
1516 * @netdev: network interface device structure
1518 * The set_rx_method entry point is called whenever the multicast address
1519 * list or the network interface flags are updated. This routine is
1520 * responsible for configuring the hardware for proper multicast mode.
1522 static void ixgbevf_set_rx_mode(struct net_device *netdev)
1524 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1525 struct ixgbe_hw *hw = &adapter->hw;
1527 /* reprogram multicast list */
1528 if (hw->mac.ops.update_mc_addr_list)
1529 hw->mac.ops.update_mc_addr_list(hw, netdev);
1532 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter)
1535 struct ixgbevf_q_vector *q_vector;
1536 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1538 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1539 struct napi_struct *napi;
1540 q_vector = adapter->q_vector[q_idx];
1541 if (!q_vector->rxr_count)
1543 napi = &q_vector->napi;
1544 if (q_vector->rxr_count > 1)
1545 napi->poll = &ixgbevf_clean_rxonly_many;
1551 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter)
1554 struct ixgbevf_q_vector *q_vector;
1555 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1557 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1558 q_vector = adapter->q_vector[q_idx];
1559 if (!q_vector->rxr_count)
1561 napi_disable(&q_vector->napi);
1565 static void ixgbevf_configure(struct ixgbevf_adapter *adapter)
1567 struct net_device *netdev = adapter->netdev;
1570 ixgbevf_set_rx_mode(netdev);
1572 ixgbevf_restore_vlan(adapter);
1574 ixgbevf_configure_tx(adapter);
1575 ixgbevf_configure_rx(adapter);
1576 for (i = 0; i < adapter->num_rx_queues; i++) {
1577 struct ixgbevf_ring *ring = &adapter->rx_ring[i];
1578 ixgbevf_alloc_rx_buffers(adapter, ring, ring->count);
1579 ring->next_to_use = ring->count - 1;
1580 writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail);
1584 #define IXGBE_MAX_RX_DESC_POLL 10
1585 static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter,
1588 struct ixgbe_hw *hw = &adapter->hw;
1589 int j = adapter->rx_ring[rxr].reg_idx;
1592 for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
1593 if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
1598 if (k >= IXGBE_MAX_RX_DESC_POLL) {
1599 hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d "
1600 "not set within the polling period\n", rxr);
1603 ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr],
1604 (adapter->rx_ring[rxr].count - 1));
1607 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter)
1609 /* Only save pre-reset stats if there are some */
1610 if (adapter->stats.vfgprc || adapter->stats.vfgptc) {
1611 adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc -
1612 adapter->stats.base_vfgprc;
1613 adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc -
1614 adapter->stats.base_vfgptc;
1615 adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc -
1616 adapter->stats.base_vfgorc;
1617 adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc -
1618 adapter->stats.base_vfgotc;
1619 adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc -
1620 adapter->stats.base_vfmprc;
1624 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
1626 struct ixgbe_hw *hw = &adapter->hw;
1628 adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
1629 adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
1630 adapter->stats.last_vfgorc |=
1631 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
1632 adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
1633 adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
1634 adapter->stats.last_vfgotc |=
1635 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
1636 adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
1638 adapter->stats.base_vfgprc = adapter->stats.last_vfgprc;
1639 adapter->stats.base_vfgorc = adapter->stats.last_vfgorc;
1640 adapter->stats.base_vfgptc = adapter->stats.last_vfgptc;
1641 adapter->stats.base_vfgotc = adapter->stats.last_vfgotc;
1642 adapter->stats.base_vfmprc = adapter->stats.last_vfmprc;
1645 static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
1647 struct net_device *netdev = adapter->netdev;
1648 struct ixgbe_hw *hw = &adapter->hw;
1650 int num_rx_rings = adapter->num_rx_queues;
1653 for (i = 0; i < adapter->num_tx_queues; i++) {
1654 j = adapter->tx_ring[i].reg_idx;
1655 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1656 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
1657 txdctl |= (8 << 16);
1658 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1661 for (i = 0; i < adapter->num_tx_queues; i++) {
1662 j = adapter->tx_ring[i].reg_idx;
1663 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1664 txdctl |= IXGBE_TXDCTL_ENABLE;
1665 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1668 for (i = 0; i < num_rx_rings; i++) {
1669 j = adapter->rx_ring[i].reg_idx;
1670 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
1671 rxdctl |= IXGBE_RXDCTL_ENABLE;
1672 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
1673 ixgbevf_rx_desc_queue_enable(adapter, i);
1676 ixgbevf_configure_msix(adapter);
1678 if (hw->mac.ops.set_rar) {
1679 if (is_valid_ether_addr(hw->mac.addr))
1680 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
1682 hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0);
1685 clear_bit(__IXGBEVF_DOWN, &adapter->state);
1686 ixgbevf_napi_enable_all(adapter);
1688 /* enable transmits */
1689 netif_tx_start_all_queues(netdev);
1691 ixgbevf_save_reset_stats(adapter);
1692 ixgbevf_init_last_counter_stats(adapter);
1694 /* bring the link up in the watchdog, this could race with our first
1695 * link up interrupt but shouldn't be a problem */
1696 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1697 adapter->link_check_timeout = jiffies;
1698 mod_timer(&adapter->watchdog_timer, jiffies);
1702 int ixgbevf_up(struct ixgbevf_adapter *adapter)
1705 struct ixgbe_hw *hw = &adapter->hw;
1707 ixgbevf_configure(adapter);
1709 err = ixgbevf_up_complete(adapter);
1711 /* clear any pending interrupts, may auto mask */
1712 IXGBE_READ_REG(hw, IXGBE_VTEICR);
1714 ixgbevf_irq_enable(adapter, true, true);
1720 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1721 * @adapter: board private structure
1722 * @rx_ring: ring to free buffers from
1724 static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter,
1725 struct ixgbevf_ring *rx_ring)
1727 struct pci_dev *pdev = adapter->pdev;
1731 if (!rx_ring->rx_buffer_info)
1734 /* Free all the Rx ring sk_buffs */
1735 for (i = 0; i < rx_ring->count; i++) {
1736 struct ixgbevf_rx_buffer *rx_buffer_info;
1738 rx_buffer_info = &rx_ring->rx_buffer_info[i];
1739 if (rx_buffer_info->dma) {
1740 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
1741 rx_ring->rx_buf_len,
1743 rx_buffer_info->dma = 0;
1745 if (rx_buffer_info->skb) {
1746 struct sk_buff *skb = rx_buffer_info->skb;
1747 rx_buffer_info->skb = NULL;
1749 struct sk_buff *this = skb;
1751 dev_kfree_skb(this);
1754 if (!rx_buffer_info->page)
1756 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
1757 PAGE_SIZE / 2, DMA_FROM_DEVICE);
1758 rx_buffer_info->page_dma = 0;
1759 put_page(rx_buffer_info->page);
1760 rx_buffer_info->page = NULL;
1761 rx_buffer_info->page_offset = 0;
1764 size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
1765 memset(rx_ring->rx_buffer_info, 0, size);
1767 /* Zero out the descriptor ring */
1768 memset(rx_ring->desc, 0, rx_ring->size);
1770 rx_ring->next_to_clean = 0;
1771 rx_ring->next_to_use = 0;
1774 writel(0, adapter->hw.hw_addr + rx_ring->head);
1776 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1780 * ixgbevf_clean_tx_ring - Free Tx Buffers
1781 * @adapter: board private structure
1782 * @tx_ring: ring to be cleaned
1784 static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter,
1785 struct ixgbevf_ring *tx_ring)
1787 struct ixgbevf_tx_buffer *tx_buffer_info;
1791 if (!tx_ring->tx_buffer_info)
1794 /* Free all the Tx ring sk_buffs */
1796 for (i = 0; i < tx_ring->count; i++) {
1797 tx_buffer_info = &tx_ring->tx_buffer_info[i];
1798 ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
1801 size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
1802 memset(tx_ring->tx_buffer_info, 0, size);
1804 memset(tx_ring->desc, 0, tx_ring->size);
1806 tx_ring->next_to_use = 0;
1807 tx_ring->next_to_clean = 0;
1810 writel(0, adapter->hw.hw_addr + tx_ring->head);
1812 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1816 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1817 * @adapter: board private structure
1819 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter)
1823 for (i = 0; i < adapter->num_rx_queues; i++)
1824 ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]);
1828 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1829 * @adapter: board private structure
1831 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter)
1835 for (i = 0; i < adapter->num_tx_queues; i++)
1836 ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1839 void ixgbevf_down(struct ixgbevf_adapter *adapter)
1841 struct net_device *netdev = adapter->netdev;
1842 struct ixgbe_hw *hw = &adapter->hw;
1846 /* signal that we are down to the interrupt handler */
1847 set_bit(__IXGBEVF_DOWN, &adapter->state);
1848 /* disable receives */
1850 netif_tx_disable(netdev);
1854 netif_tx_stop_all_queues(netdev);
1856 ixgbevf_irq_disable(adapter);
1858 ixgbevf_napi_disable_all(adapter);
1860 del_timer_sync(&adapter->watchdog_timer);
1861 /* can't call flush scheduled work here because it can deadlock
1862 * if linkwatch_event tries to acquire the rtnl_lock which we are
1864 while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK)
1867 /* disable transmits in the hardware now that interrupts are off */
1868 for (i = 0; i < adapter->num_tx_queues; i++) {
1869 j = adapter->tx_ring[i].reg_idx;
1870 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1871 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j),
1872 (txdctl & ~IXGBE_TXDCTL_ENABLE));
1875 netif_carrier_off(netdev);
1877 if (!pci_channel_offline(adapter->pdev))
1878 ixgbevf_reset(adapter);
1880 ixgbevf_clean_all_tx_rings(adapter);
1881 ixgbevf_clean_all_rx_rings(adapter);
1884 void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
1886 struct ixgbe_hw *hw = &adapter->hw;
1888 WARN_ON(in_interrupt());
1890 while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
1894 * Check if PF is up before re-init. If not then skip until
1895 * later when the PF is up and ready to service requests from
1896 * the VF via mailbox. If the VF is up and running then the
1897 * watchdog task will continue to schedule reset tasks until
1898 * the PF is up and running.
1900 if (!hw->mac.ops.reset_hw(hw)) {
1901 ixgbevf_down(adapter);
1902 ixgbevf_up(adapter);
1905 clear_bit(__IXGBEVF_RESETTING, &adapter->state);
1908 void ixgbevf_reset(struct ixgbevf_adapter *adapter)
1910 struct ixgbe_hw *hw = &adapter->hw;
1911 struct net_device *netdev = adapter->netdev;
1913 if (hw->mac.ops.reset_hw(hw))
1914 hw_dbg(hw, "PF still resetting\n");
1916 hw->mac.ops.init_hw(hw);
1918 if (is_valid_ether_addr(adapter->hw.mac.addr)) {
1919 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
1921 memcpy(netdev->perm_addr, adapter->hw.mac.addr,
1926 static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
1929 int err, vector_threshold;
1931 /* We'll want at least 3 (vector_threshold):
1934 * 3) Other (Link Status Change, etc.)
1936 vector_threshold = MIN_MSIX_COUNT;
1938 /* The more we get, the more we will assign to Tx/Rx Cleanup
1939 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1940 * Right now, we simply care about how many we'll get; we'll
1941 * set them up later while requesting irq's.
1943 while (vectors >= vector_threshold) {
1944 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1946 if (!err) /* Success in acquiring all requested vectors. */
1949 vectors = 0; /* Nasty failure, quit now */
1950 else /* err == number of vectors we should try again with */
1954 if (vectors < vector_threshold) {
1955 /* Can't allocate enough MSI-X interrupts? Oh well.
1956 * This just means we'll go with either a single MSI
1957 * vector or fall back to legacy interrupts.
1959 hw_dbg(&adapter->hw,
1960 "Unable to allocate MSI-X interrupts\n");
1961 kfree(adapter->msix_entries);
1962 adapter->msix_entries = NULL;
1965 * Adjust for only the vectors we'll use, which is minimum
1966 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1967 * vectors we were allocated.
1969 adapter->num_msix_vectors = vectors;
1974 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
1975 * @adapter: board private structure to initialize
1977 * This is the top level queue allocation routine. The order here is very
1978 * important, starting with the "most" number of features turned on at once,
1979 * and ending with the smallest set of features. This way large combinations
1980 * can be allocated if they're turned on, and smaller combinations are the
1981 * fallthrough conditions.
1984 static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
1986 /* Start with base case */
1987 adapter->num_rx_queues = 1;
1988 adapter->num_tx_queues = 1;
1989 adapter->num_rx_pools = adapter->num_rx_queues;
1990 adapter->num_rx_queues_per_pool = 1;
1994 * ixgbevf_alloc_queues - Allocate memory for all rings
1995 * @adapter: board private structure to initialize
1997 * We allocate one ring per queue at run-time since we don't know the
1998 * number of queues at compile-time. The polling_netdev array is
1999 * intended for Multiqueue, but should work fine with a single queue.
2001 static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
2005 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
2006 sizeof(struct ixgbevf_ring), GFP_KERNEL);
2007 if (!adapter->tx_ring)
2008 goto err_tx_ring_allocation;
2010 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
2011 sizeof(struct ixgbevf_ring), GFP_KERNEL);
2012 if (!adapter->rx_ring)
2013 goto err_rx_ring_allocation;
2015 for (i = 0; i < adapter->num_tx_queues; i++) {
2016 adapter->tx_ring[i].count = adapter->tx_ring_count;
2017 adapter->tx_ring[i].queue_index = i;
2018 adapter->tx_ring[i].reg_idx = i;
2021 for (i = 0; i < adapter->num_rx_queues; i++) {
2022 adapter->rx_ring[i].count = adapter->rx_ring_count;
2023 adapter->rx_ring[i].queue_index = i;
2024 adapter->rx_ring[i].reg_idx = i;
2029 err_rx_ring_allocation:
2030 kfree(adapter->tx_ring);
2031 err_tx_ring_allocation:
2036 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
2037 * @adapter: board private structure to initialize
2039 * Attempt to configure the interrupts using the best available
2040 * capabilities of the hardware and the kernel.
2042 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
2045 int vector, v_budget;
2048 * It's easy to be greedy for MSI-X vectors, but it really
2049 * doesn't do us much good if we have a lot more vectors
2050 * than CPU's. So let's be conservative and only ask for
2051 * (roughly) twice the number of vectors as there are CPU's.
2053 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
2054 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
2056 /* A failure in MSI-X entry allocation isn't fatal, but it does
2057 * mean we disable MSI-X capabilities of the adapter. */
2058 adapter->msix_entries = kcalloc(v_budget,
2059 sizeof(struct msix_entry), GFP_KERNEL);
2060 if (!adapter->msix_entries) {
2065 for (vector = 0; vector < v_budget; vector++)
2066 adapter->msix_entries[vector].entry = vector;
2068 ixgbevf_acquire_msix_vectors(adapter, v_budget);
2075 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
2076 * @adapter: board private structure to initialize
2078 * We allocate one q_vector per queue interrupt. If allocation fails we
2081 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter)
2083 int q_idx, num_q_vectors;
2084 struct ixgbevf_q_vector *q_vector;
2086 int (*poll)(struct napi_struct *, int);
2088 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2089 napi_vectors = adapter->num_rx_queues;
2090 poll = &ixgbevf_clean_rxonly;
2092 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
2093 q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL);
2096 q_vector->adapter = adapter;
2097 q_vector->v_idx = q_idx;
2098 q_vector->eitr = adapter->eitr_param;
2099 if (q_idx < napi_vectors)
2100 netif_napi_add(adapter->netdev, &q_vector->napi,
2102 adapter->q_vector[q_idx] = q_vector;
2110 q_vector = adapter->q_vector[q_idx];
2111 netif_napi_del(&q_vector->napi);
2113 adapter->q_vector[q_idx] = NULL;
2119 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
2120 * @adapter: board private structure to initialize
2122 * This function frees the memory allocated to the q_vectors. In addition if
2123 * NAPI is enabled it will delete any references to the NAPI struct prior
2124 * to freeing the q_vector.
2126 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter)
2128 int q_idx, num_q_vectors;
2131 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2132 napi_vectors = adapter->num_rx_queues;
2134 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
2135 struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx];
2137 adapter->q_vector[q_idx] = NULL;
2138 if (q_idx < napi_vectors)
2139 netif_napi_del(&q_vector->napi);
2145 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
2146 * @adapter: board private structure
2149 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter)
2151 pci_disable_msix(adapter->pdev);
2152 kfree(adapter->msix_entries);
2153 adapter->msix_entries = NULL;
2159 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
2160 * @adapter: board private structure to initialize
2163 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter)
2167 /* Number of supported queues */
2168 ixgbevf_set_num_queues(adapter);
2170 err = ixgbevf_set_interrupt_capability(adapter);
2172 hw_dbg(&adapter->hw,
2173 "Unable to setup interrupt capabilities\n");
2174 goto err_set_interrupt;
2177 err = ixgbevf_alloc_q_vectors(adapter);
2179 hw_dbg(&adapter->hw, "Unable to allocate memory for queue "
2181 goto err_alloc_q_vectors;
2184 err = ixgbevf_alloc_queues(adapter);
2186 printk(KERN_ERR "Unable to allocate memory for queues\n");
2187 goto err_alloc_queues;
2190 hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, "
2191 "Tx Queue count = %u\n",
2192 (adapter->num_rx_queues > 1) ? "Enabled" :
2193 "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
2195 set_bit(__IXGBEVF_DOWN, &adapter->state);
2199 ixgbevf_free_q_vectors(adapter);
2200 err_alloc_q_vectors:
2201 ixgbevf_reset_interrupt_capability(adapter);
2207 * ixgbevf_sw_init - Initialize general software structures
2208 * (struct ixgbevf_adapter)
2209 * @adapter: board private structure to initialize
2211 * ixgbevf_sw_init initializes the Adapter private data structure.
2212 * Fields are initialized based on PCI device information and
2213 * OS network device settings (MTU size).
2215 static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
2217 struct ixgbe_hw *hw = &adapter->hw;
2218 struct pci_dev *pdev = adapter->pdev;
2221 /* PCI config space info */
2223 hw->vendor_id = pdev->vendor;
2224 hw->device_id = pdev->device;
2225 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2226 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2227 hw->subsystem_device_id = pdev->subsystem_device;
2229 hw->mbx.ops.init_params(hw);
2230 hw->mac.max_tx_queues = MAX_TX_QUEUES;
2231 hw->mac.max_rx_queues = MAX_RX_QUEUES;
2232 err = hw->mac.ops.reset_hw(hw);
2234 dev_info(&pdev->dev,
2235 "PF still in reset state, assigning new address\n");
2236 random_ether_addr(hw->mac.addr);
2238 err = hw->mac.ops.init_hw(hw);
2240 printk(KERN_ERR "init_shared_code failed: %d\n", err);
2245 /* Enable dynamic interrupt throttling rates */
2246 adapter->eitr_param = 20000;
2247 adapter->itr_setting = 1;
2249 /* set defaults for eitr in MegaBytes */
2250 adapter->eitr_low = 10;
2251 adapter->eitr_high = 20;
2253 /* set default ring sizes */
2254 adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD;
2255 adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD;
2257 /* enable rx csum by default */
2258 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
2260 set_bit(__IXGBEVF_DOWN, &adapter->state);
2266 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2268 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2269 if (current_counter < last_counter) \
2270 counter += 0x100000000LL; \
2271 last_counter = current_counter; \
2272 counter &= 0xFFFFFFFF00000000LL; \
2273 counter |= current_counter; \
2276 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2278 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2279 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2280 u64 current_counter = (current_counter_msb << 32) | \
2281 current_counter_lsb; \
2282 if (current_counter < last_counter) \
2283 counter += 0x1000000000LL; \
2284 last_counter = current_counter; \
2285 counter &= 0xFFFFFFF000000000LL; \
2286 counter |= current_counter; \
2289 * ixgbevf_update_stats - Update the board statistics counters.
2290 * @adapter: board private structure
2292 void ixgbevf_update_stats(struct ixgbevf_adapter *adapter)
2294 struct ixgbe_hw *hw = &adapter->hw;
2296 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc,
2297 adapter->stats.vfgprc);
2298 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc,
2299 adapter->stats.vfgptc);
2300 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
2301 adapter->stats.last_vfgorc,
2302 adapter->stats.vfgorc);
2303 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
2304 adapter->stats.last_vfgotc,
2305 adapter->stats.vfgotc);
2306 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc,
2307 adapter->stats.vfmprc);
2309 /* Fill out the OS statistics structure */
2310 adapter->net_stats.multicast = adapter->stats.vfmprc -
2311 adapter->stats.base_vfmprc;
2315 * ixgbevf_watchdog - Timer Call-back
2316 * @data: pointer to adapter cast into an unsigned long
2318 static void ixgbevf_watchdog(unsigned long data)
2320 struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data;
2321 struct ixgbe_hw *hw = &adapter->hw;
2326 * Do the watchdog outside of interrupt context due to the lovely
2327 * delays that some of the newer hardware requires
2330 if (test_bit(__IXGBEVF_DOWN, &adapter->state))
2331 goto watchdog_short_circuit;
2333 /* get one bit for every active tx/rx interrupt vector */
2334 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
2335 struct ixgbevf_q_vector *qv = adapter->q_vector[i];
2336 if (qv->rxr_count || qv->txr_count)
2340 IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics);
2342 watchdog_short_circuit:
2343 schedule_work(&adapter->watchdog_task);
2347 * ixgbevf_tx_timeout - Respond to a Tx Hang
2348 * @netdev: network interface device structure
2350 static void ixgbevf_tx_timeout(struct net_device *netdev)
2352 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2354 /* Do the reset outside of interrupt context */
2355 schedule_work(&adapter->reset_task);
2358 static void ixgbevf_reset_task(struct work_struct *work)
2360 struct ixgbevf_adapter *adapter;
2361 adapter = container_of(work, struct ixgbevf_adapter, reset_task);
2363 /* If we're already down or resetting, just bail */
2364 if (test_bit(__IXGBEVF_DOWN, &adapter->state) ||
2365 test_bit(__IXGBEVF_RESETTING, &adapter->state))
2368 adapter->tx_timeout_count++;
2370 ixgbevf_reinit_locked(adapter);
2374 * ixgbevf_watchdog_task - worker thread to bring link up
2375 * @work: pointer to work_struct containing our data
2377 static void ixgbevf_watchdog_task(struct work_struct *work)
2379 struct ixgbevf_adapter *adapter = container_of(work,
2380 struct ixgbevf_adapter,
2382 struct net_device *netdev = adapter->netdev;
2383 struct ixgbe_hw *hw = &adapter->hw;
2384 u32 link_speed = adapter->link_speed;
2385 bool link_up = adapter->link_up;
2387 adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
2390 * Always check the link on the watchdog because we have
2393 if (hw->mac.ops.check_link) {
2394 if ((hw->mac.ops.check_link(hw, &link_speed,
2395 &link_up, false)) != 0) {
2396 adapter->link_up = link_up;
2397 adapter->link_speed = link_speed;
2398 netif_carrier_off(netdev);
2399 netif_tx_stop_all_queues(netdev);
2400 schedule_work(&adapter->reset_task);
2404 /* always assume link is up, if no check link
2406 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
2409 adapter->link_up = link_up;
2410 adapter->link_speed = link_speed;
2413 if (!netif_carrier_ok(netdev)) {
2414 hw_dbg(&adapter->hw, "NIC Link is Up, %u Gbps\n",
2415 (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
2417 netif_carrier_on(netdev);
2418 netif_tx_wake_all_queues(netdev);
2420 /* Force detection of hung controller */
2421 adapter->detect_tx_hung = true;
2424 adapter->link_up = false;
2425 adapter->link_speed = 0;
2426 if (netif_carrier_ok(netdev)) {
2427 hw_dbg(&adapter->hw, "NIC Link is Down\n");
2428 netif_carrier_off(netdev);
2429 netif_tx_stop_all_queues(netdev);
2433 ixgbevf_update_stats(adapter);
2436 /* Force detection of hung controller every watchdog period */
2437 adapter->detect_tx_hung = true;
2439 /* Reset the timer */
2440 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
2441 mod_timer(&adapter->watchdog_timer,
2442 round_jiffies(jiffies + (2 * HZ)));
2444 adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
2448 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2449 * @adapter: board private structure
2450 * @tx_ring: Tx descriptor ring for a specific queue
2452 * Free all transmit software resources
2454 void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter,
2455 struct ixgbevf_ring *tx_ring)
2457 struct pci_dev *pdev = adapter->pdev;
2459 ixgbevf_clean_tx_ring(adapter, tx_ring);
2461 vfree(tx_ring->tx_buffer_info);
2462 tx_ring->tx_buffer_info = NULL;
2464 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2467 tx_ring->desc = NULL;
2471 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2472 * @adapter: board private structure
2474 * Free all transmit software resources
2476 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter)
2480 for (i = 0; i < adapter->num_tx_queues; i++)
2481 if (adapter->tx_ring[i].desc)
2482 ixgbevf_free_tx_resources(adapter,
2483 &adapter->tx_ring[i]);
2488 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2489 * @adapter: board private structure
2490 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2492 * Return 0 on success, negative on failure
2494 int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter,
2495 struct ixgbevf_ring *tx_ring)
2497 struct pci_dev *pdev = adapter->pdev;
2500 size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
2501 tx_ring->tx_buffer_info = vmalloc(size);
2502 if (!tx_ring->tx_buffer_info)
2504 memset(tx_ring->tx_buffer_info, 0, size);
2506 /* round up to nearest 4K */
2507 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
2508 tx_ring->size = ALIGN(tx_ring->size, 4096);
2510 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
2511 &tx_ring->dma, GFP_KERNEL);
2515 tx_ring->next_to_use = 0;
2516 tx_ring->next_to_clean = 0;
2517 tx_ring->work_limit = tx_ring->count;
2521 vfree(tx_ring->tx_buffer_info);
2522 tx_ring->tx_buffer_info = NULL;
2523 hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit "
2524 "descriptor ring\n");
2529 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2530 * @adapter: board private structure
2532 * If this function returns with an error, then it's possible one or
2533 * more of the rings is populated (while the rest are not). It is the
2534 * callers duty to clean those orphaned rings.
2536 * Return 0 on success, negative on failure
2538 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
2542 for (i = 0; i < adapter->num_tx_queues; i++) {
2543 err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]);
2546 hw_dbg(&adapter->hw,
2547 "Allocation for Tx Queue %u failed\n", i);
2555 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2556 * @adapter: board private structure
2557 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2559 * Returns 0 on success, negative on failure
2561 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter,
2562 struct ixgbevf_ring *rx_ring)
2564 struct pci_dev *pdev = adapter->pdev;
2567 size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
2568 rx_ring->rx_buffer_info = vmalloc(size);
2569 if (!rx_ring->rx_buffer_info) {
2570 hw_dbg(&adapter->hw,
2571 "Unable to vmalloc buffer memory for "
2572 "the receive descriptor ring\n");
2575 memset(rx_ring->rx_buffer_info, 0, size);
2577 /* Round up to nearest 4K */
2578 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
2579 rx_ring->size = ALIGN(rx_ring->size, 4096);
2581 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
2582 &rx_ring->dma, GFP_KERNEL);
2584 if (!rx_ring->desc) {
2585 hw_dbg(&adapter->hw,
2586 "Unable to allocate memory for "
2587 "the receive descriptor ring\n");
2588 vfree(rx_ring->rx_buffer_info);
2589 rx_ring->rx_buffer_info = NULL;
2593 rx_ring->next_to_clean = 0;
2594 rx_ring->next_to_use = 0;
2602 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2603 * @adapter: board private structure
2605 * If this function returns with an error, then it's possible one or
2606 * more of the rings is populated (while the rest are not). It is the
2607 * callers duty to clean those orphaned rings.
2609 * Return 0 on success, negative on failure
2611 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter)
2615 for (i = 0; i < adapter->num_rx_queues; i++) {
2616 err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]);
2619 hw_dbg(&adapter->hw,
2620 "Allocation for Rx Queue %u failed\n", i);
2627 * ixgbevf_free_rx_resources - Free Rx Resources
2628 * @adapter: board private structure
2629 * @rx_ring: ring to clean the resources from
2631 * Free all receive software resources
2633 void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter,
2634 struct ixgbevf_ring *rx_ring)
2636 struct pci_dev *pdev = adapter->pdev;
2638 ixgbevf_clean_rx_ring(adapter, rx_ring);
2640 vfree(rx_ring->rx_buffer_info);
2641 rx_ring->rx_buffer_info = NULL;
2643 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2646 rx_ring->desc = NULL;
2650 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2651 * @adapter: board private structure
2653 * Free all receive software resources
2655 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter)
2659 for (i = 0; i < adapter->num_rx_queues; i++)
2660 if (adapter->rx_ring[i].desc)
2661 ixgbevf_free_rx_resources(adapter,
2662 &adapter->rx_ring[i]);
2666 * ixgbevf_open - Called when a network interface is made active
2667 * @netdev: network interface device structure
2669 * Returns 0 on success, negative value on failure
2671 * The open entry point is called when a network interface is made
2672 * active by the system (IFF_UP). At this point all resources needed
2673 * for transmit and receive operations are allocated, the interrupt
2674 * handler is registered with the OS, the watchdog timer is started,
2675 * and the stack is notified that the interface is ready.
2677 static int ixgbevf_open(struct net_device *netdev)
2679 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2680 struct ixgbe_hw *hw = &adapter->hw;
2683 /* disallow open during test */
2684 if (test_bit(__IXGBEVF_TESTING, &adapter->state))
2687 if (hw->adapter_stopped) {
2688 ixgbevf_reset(adapter);
2689 /* if adapter is still stopped then PF isn't up and
2690 * the vf can't start. */
2691 if (hw->adapter_stopped) {
2692 err = IXGBE_ERR_MBX;
2693 printk(KERN_ERR "Unable to start - perhaps the PF"
2694 " Driver isn't up yet\n");
2695 goto err_setup_reset;
2699 /* allocate transmit descriptors */
2700 err = ixgbevf_setup_all_tx_resources(adapter);
2704 /* allocate receive descriptors */
2705 err = ixgbevf_setup_all_rx_resources(adapter);
2709 ixgbevf_configure(adapter);
2712 * Map the Tx/Rx rings to the vectors we were allotted.
2713 * if request_irq will be called in this function map_rings
2714 * must be called *before* up_complete
2716 ixgbevf_map_rings_to_vectors(adapter);
2718 err = ixgbevf_up_complete(adapter);
2722 /* clear any pending interrupts, may auto mask */
2723 IXGBE_READ_REG(hw, IXGBE_VTEICR);
2724 err = ixgbevf_request_irq(adapter);
2728 ixgbevf_irq_enable(adapter, true, true);
2733 ixgbevf_down(adapter);
2735 ixgbevf_free_irq(adapter);
2737 ixgbevf_free_all_rx_resources(adapter);
2739 ixgbevf_free_all_tx_resources(adapter);
2740 ixgbevf_reset(adapter);
2748 * ixgbevf_close - Disables a network interface
2749 * @netdev: network interface device structure
2751 * Returns 0, this is not allowed to fail
2753 * The close entry point is called when an interface is de-activated
2754 * by the OS. The hardware is still under the drivers control, but
2755 * needs to be disabled. A global MAC reset is issued to stop the
2756 * hardware, and all transmit and receive resources are freed.
2758 static int ixgbevf_close(struct net_device *netdev)
2760 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2762 ixgbevf_down(adapter);
2763 ixgbevf_free_irq(adapter);
2765 ixgbevf_free_all_tx_resources(adapter);
2766 ixgbevf_free_all_rx_resources(adapter);
2771 static int ixgbevf_tso(struct ixgbevf_adapter *adapter,
2772 struct ixgbevf_ring *tx_ring,
2773 struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
2775 struct ixgbe_adv_tx_context_desc *context_desc;
2778 struct ixgbevf_tx_buffer *tx_buffer_info;
2779 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
2780 u32 mss_l4len_idx, l4len;
2782 if (skb_is_gso(skb)) {
2783 if (skb_header_cloned(skb)) {
2784 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2788 l4len = tcp_hdrlen(skb);
2791 if (skb->protocol == htons(ETH_P_IP)) {
2792 struct iphdr *iph = ip_hdr(skb);
2795 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2799 adapter->hw_tso_ctxt++;
2800 } else if (skb_is_gso_v6(skb)) {
2801 ipv6_hdr(skb)->payload_len = 0;
2802 tcp_hdr(skb)->check =
2803 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2804 &ipv6_hdr(skb)->daddr,
2806 adapter->hw_tso6_ctxt++;
2809 i = tx_ring->next_to_use;
2811 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2812 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
2814 /* VLAN MACLEN IPLEN */
2815 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
2817 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
2818 vlan_macip_lens |= ((skb_network_offset(skb)) <<
2819 IXGBE_ADVTXD_MACLEN_SHIFT);
2820 *hdr_len += skb_network_offset(skb);
2822 (skb_transport_header(skb) - skb_network_header(skb));
2824 (skb_transport_header(skb) - skb_network_header(skb));
2825 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
2826 context_desc->seqnum_seed = 0;
2828 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2829 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
2830 IXGBE_ADVTXD_DTYP_CTXT);
2832 if (skb->protocol == htons(ETH_P_IP))
2833 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
2834 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
2835 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
2839 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
2840 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
2841 /* use index 1 for TSO */
2842 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
2843 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
2845 tx_buffer_info->time_stamp = jiffies;
2846 tx_buffer_info->next_to_watch = i;
2849 if (i == tx_ring->count)
2851 tx_ring->next_to_use = i;
2859 static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter,
2860 struct ixgbevf_ring *tx_ring,
2861 struct sk_buff *skb, u32 tx_flags)
2863 struct ixgbe_adv_tx_context_desc *context_desc;
2865 struct ixgbevf_tx_buffer *tx_buffer_info;
2866 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
2868 if (skb->ip_summed == CHECKSUM_PARTIAL ||
2869 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
2870 i = tx_ring->next_to_use;
2871 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2872 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
2874 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
2875 vlan_macip_lens |= (tx_flags &
2876 IXGBE_TX_FLAGS_VLAN_MASK);
2877 vlan_macip_lens |= (skb_network_offset(skb) <<
2878 IXGBE_ADVTXD_MACLEN_SHIFT);
2879 if (skb->ip_summed == CHECKSUM_PARTIAL)
2880 vlan_macip_lens |= (skb_transport_header(skb) -
2881 skb_network_header(skb));
2883 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
2884 context_desc->seqnum_seed = 0;
2886 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
2887 IXGBE_ADVTXD_DTYP_CTXT);
2889 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2890 switch (skb->protocol) {
2891 case __constant_htons(ETH_P_IP):
2892 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
2893 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2895 IXGBE_ADVTXD_TUCMD_L4T_TCP;
2897 case __constant_htons(ETH_P_IPV6):
2898 /* XXX what about other V6 headers?? */
2899 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2901 IXGBE_ADVTXD_TUCMD_L4T_TCP;
2904 if (unlikely(net_ratelimit())) {
2906 "partial checksum but "
2914 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
2915 /* use index zero for tx checksum offload */
2916 context_desc->mss_l4len_idx = 0;
2918 tx_buffer_info->time_stamp = jiffies;
2919 tx_buffer_info->next_to_watch = i;
2921 adapter->hw_csum_tx_good++;
2923 if (i == tx_ring->count)
2925 tx_ring->next_to_use = i;
2933 static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter,
2934 struct ixgbevf_ring *tx_ring,
2935 struct sk_buff *skb, u32 tx_flags,
2938 struct pci_dev *pdev = adapter->pdev;
2939 struct ixgbevf_tx_buffer *tx_buffer_info;
2941 unsigned int total = skb->len;
2942 unsigned int offset = 0, size, count = 0;
2943 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
2947 i = tx_ring->next_to_use;
2949 len = min(skb_headlen(skb), total);
2951 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2952 size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
2954 tx_buffer_info->length = size;
2955 tx_buffer_info->mapped_as_page = false;
2956 tx_buffer_info->dma = dma_map_single(&adapter->pdev->dev,
2958 size, DMA_TO_DEVICE);
2959 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
2961 tx_buffer_info->time_stamp = jiffies;
2962 tx_buffer_info->next_to_watch = i;
2969 if (i == tx_ring->count)
2973 for (f = 0; f < nr_frags; f++) {
2974 struct skb_frag_struct *frag;
2976 frag = &skb_shinfo(skb)->frags[f];
2977 len = min((unsigned int)frag->size, total);
2978 offset = frag->page_offset;
2981 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2982 size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
2984 tx_buffer_info->length = size;
2985 tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
2990 tx_buffer_info->mapped_as_page = true;
2991 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
2993 tx_buffer_info->time_stamp = jiffies;
2994 tx_buffer_info->next_to_watch = i;
3001 if (i == tx_ring->count)
3009 i = tx_ring->count - 1;
3012 tx_ring->tx_buffer_info[i].skb = skb;
3013 tx_ring->tx_buffer_info[first].next_to_watch = i;
3018 dev_err(&pdev->dev, "TX DMA map failed\n");
3020 /* clear timestamp and dma mappings for failed tx_buffer_info map */
3021 tx_buffer_info->dma = 0;
3022 tx_buffer_info->time_stamp = 0;
3023 tx_buffer_info->next_to_watch = 0;
3026 /* clear timestamp and dma mappings for remaining portion of packet */
3027 while (count >= 0) {
3031 i += tx_ring->count;
3032 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3033 ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3039 static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter,
3040 struct ixgbevf_ring *tx_ring, int tx_flags,
3041 int count, u32 paylen, u8 hdr_len)
3043 union ixgbe_adv_tx_desc *tx_desc = NULL;
3044 struct ixgbevf_tx_buffer *tx_buffer_info;
3045 u32 olinfo_status = 0, cmd_type_len = 0;
3048 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
3050 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
3052 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
3054 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
3055 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
3057 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
3058 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
3060 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
3061 IXGBE_ADVTXD_POPTS_SHIFT;
3063 /* use index 1 context for tso */
3064 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
3065 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
3066 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
3067 IXGBE_ADVTXD_POPTS_SHIFT;
3069 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
3070 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
3071 IXGBE_ADVTXD_POPTS_SHIFT;
3073 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
3075 i = tx_ring->next_to_use;
3077 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3078 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
3079 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
3080 tx_desc->read.cmd_type_len =
3081 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
3082 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
3084 if (i == tx_ring->count)
3088 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
3091 * Force memory writes to complete before letting h/w
3092 * know there are new descriptors to fetch. (Only
3093 * applicable for weak-ordered memory model archs,
3098 tx_ring->next_to_use = i;
3099 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3102 static int __ixgbevf_maybe_stop_tx(struct net_device *netdev,
3103 struct ixgbevf_ring *tx_ring, int size)
3105 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3107 netif_stop_subqueue(netdev, tx_ring->queue_index);
3108 /* Herbert's original patch had:
3109 * smp_mb__after_netif_stop_queue();
3110 * but since that doesn't exist yet, just open code it. */
3113 /* We need to check again in a case another CPU has just
3114 * made room available. */
3115 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
3118 /* A reprieve! - use start_queue because it doesn't call schedule */
3119 netif_start_subqueue(netdev, tx_ring->queue_index);
3120 ++adapter->restart_queue;
3124 static int ixgbevf_maybe_stop_tx(struct net_device *netdev,
3125 struct ixgbevf_ring *tx_ring, int size)
3127 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
3129 return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size);
3132 static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3134 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3135 struct ixgbevf_ring *tx_ring;
3137 unsigned int tx_flags = 0;
3144 tx_ring = &adapter->tx_ring[r_idx];
3146 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3147 tx_flags |= vlan_tx_tag_get(skb);
3148 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
3149 tx_flags |= IXGBE_TX_FLAGS_VLAN;
3152 /* four things can cause us to need a context descriptor */
3153 if (skb_is_gso(skb) ||
3154 (skb->ip_summed == CHECKSUM_PARTIAL) ||
3155 (tx_flags & IXGBE_TX_FLAGS_VLAN))
3158 count += TXD_USE_COUNT(skb_headlen(skb));
3159 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
3160 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
3162 if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) {
3164 return NETDEV_TX_BUSY;
3167 first = tx_ring->next_to_use;
3169 if (skb->protocol == htons(ETH_P_IP))
3170 tx_flags |= IXGBE_TX_FLAGS_IPV4;
3171 tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
3173 dev_kfree_skb_any(skb);
3174 return NETDEV_TX_OK;
3178 tx_flags |= IXGBE_TX_FLAGS_TSO;
3179 else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
3180 (skb->ip_summed == CHECKSUM_PARTIAL))
3181 tx_flags |= IXGBE_TX_FLAGS_CSUM;
3183 ixgbevf_tx_queue(adapter, tx_ring, tx_flags,
3184 ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first),
3187 ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
3189 return NETDEV_TX_OK;
3193 * ixgbevf_get_stats - Get System Network Statistics
3194 * @netdev: network interface device structure
3196 * Returns the address of the device statistics structure.
3197 * The statistics are actually updated from the timer callback.
3199 static struct net_device_stats *ixgbevf_get_stats(struct net_device *netdev)
3201 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3203 /* only return the current stats */
3204 return &adapter->net_stats;
3208 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3209 * @netdev: network interface device structure
3210 * @p: pointer to an address structure
3212 * Returns 0 on success, negative on failure
3214 static int ixgbevf_set_mac(struct net_device *netdev, void *p)
3216 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3217 struct ixgbe_hw *hw = &adapter->hw;
3218 struct sockaddr *addr = p;
3220 if (!is_valid_ether_addr(addr->sa_data))
3221 return -EADDRNOTAVAIL;
3223 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3224 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
3226 if (hw->mac.ops.set_rar)
3227 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
3233 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3234 * @netdev: network interface device structure
3235 * @new_mtu: new value for maximum frame size
3237 * Returns 0 on success, negative on failure
3239 static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
3241 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3242 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3244 /* MTU < 68 is an error and causes problems on some kernels */
3245 if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE))
3248 hw_dbg(&adapter->hw, "changing MTU from %d to %d\n",
3249 netdev->mtu, new_mtu);
3250 /* must set new MTU before calling down or up */
3251 netdev->mtu = new_mtu;
3253 if (netif_running(netdev))
3254 ixgbevf_reinit_locked(adapter);
3259 static void ixgbevf_shutdown(struct pci_dev *pdev)
3261 struct net_device *netdev = pci_get_drvdata(pdev);
3262 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3264 netif_device_detach(netdev);
3266 if (netif_running(netdev)) {
3267 ixgbevf_down(adapter);
3268 ixgbevf_free_irq(adapter);
3269 ixgbevf_free_all_tx_resources(adapter);
3270 ixgbevf_free_all_rx_resources(adapter);
3274 pci_save_state(pdev);
3277 pci_disable_device(pdev);
3280 static const struct net_device_ops ixgbe_netdev_ops = {
3281 .ndo_open = &ixgbevf_open,
3282 .ndo_stop = &ixgbevf_close,
3283 .ndo_start_xmit = &ixgbevf_xmit_frame,
3284 .ndo_get_stats = &ixgbevf_get_stats,
3285 .ndo_set_rx_mode = &ixgbevf_set_rx_mode,
3286 .ndo_set_multicast_list = &ixgbevf_set_rx_mode,
3287 .ndo_validate_addr = eth_validate_addr,
3288 .ndo_set_mac_address = &ixgbevf_set_mac,
3289 .ndo_change_mtu = &ixgbevf_change_mtu,
3290 .ndo_tx_timeout = &ixgbevf_tx_timeout,
3291 .ndo_vlan_rx_register = &ixgbevf_vlan_rx_register,
3292 .ndo_vlan_rx_add_vid = &ixgbevf_vlan_rx_add_vid,
3293 .ndo_vlan_rx_kill_vid = &ixgbevf_vlan_rx_kill_vid,
3296 static void ixgbevf_assign_netdev_ops(struct net_device *dev)
3298 struct ixgbevf_adapter *adapter;
3299 adapter = netdev_priv(dev);
3300 dev->netdev_ops = &ixgbe_netdev_ops;
3301 ixgbevf_set_ethtool_ops(dev);
3302 dev->watchdog_timeo = 5 * HZ;
3306 * ixgbevf_probe - Device Initialization Routine
3307 * @pdev: PCI device information struct
3308 * @ent: entry in ixgbevf_pci_tbl
3310 * Returns 0 on success, negative on failure
3312 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3313 * The OS initialization, configuring of the adapter private structure,
3314 * and a hardware reset occur.
3316 static int __devinit ixgbevf_probe(struct pci_dev *pdev,
3317 const struct pci_device_id *ent)
3319 struct net_device *netdev;
3320 struct ixgbevf_adapter *adapter = NULL;
3321 struct ixgbe_hw *hw = NULL;
3322 const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data];
3323 static int cards_found;
3324 int err, pci_using_dac;
3326 err = pci_enable_device(pdev);
3330 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
3331 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
3334 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
3336 err = dma_set_coherent_mask(&pdev->dev,
3339 dev_err(&pdev->dev, "No usable DMA "
3340 "configuration, aborting\n");
3347 err = pci_request_regions(pdev, ixgbevf_driver_name);
3349 dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err);
3353 pci_set_master(pdev);
3356 netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter),
3359 netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter));
3363 goto err_alloc_etherdev;
3366 SET_NETDEV_DEV(netdev, &pdev->dev);
3368 pci_set_drvdata(pdev, netdev);
3369 adapter = netdev_priv(netdev);
3371 adapter->netdev = netdev;
3372 adapter->pdev = pdev;
3375 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
3378 * call save state here in standalone driver because it relies on
3379 * adapter struct to exist, and needs to call netdev_priv
3381 pci_save_state(pdev);
3383 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
3384 pci_resource_len(pdev, 0));
3390 ixgbevf_assign_netdev_ops(netdev);
3392 adapter->bd_number = cards_found;
3395 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
3396 hw->mac.type = ii->mac;
3398 memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops,
3399 sizeof(struct ixgbe_mac_operations));
3401 adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE;
3402 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
3403 adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE;
3405 /* setup the private structure */
3406 err = ixgbevf_sw_init(adapter);
3408 #ifdef MAX_SKB_FRAGS
3409 netdev->features = NETIF_F_SG |
3411 NETIF_F_HW_VLAN_TX |
3412 NETIF_F_HW_VLAN_RX |
3413 NETIF_F_HW_VLAN_FILTER;
3415 netdev->features |= NETIF_F_IPV6_CSUM;
3416 netdev->features |= NETIF_F_TSO;
3417 netdev->features |= NETIF_F_TSO6;
3418 netdev->vlan_features |= NETIF_F_TSO;
3419 netdev->vlan_features |= NETIF_F_TSO6;
3420 netdev->vlan_features |= NETIF_F_IP_CSUM;
3421 netdev->vlan_features |= NETIF_F_SG;
3424 netdev->features |= NETIF_F_HIGHDMA;
3426 #endif /* MAX_SKB_FRAGS */
3428 /* The HW MAC address was set and/or determined in sw_init */
3429 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
3430 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
3432 if (!is_valid_ether_addr(netdev->dev_addr)) {
3433 printk(KERN_ERR "invalid MAC address\n");
3438 init_timer(&adapter->watchdog_timer);
3439 adapter->watchdog_timer.function = &ixgbevf_watchdog;
3440 adapter->watchdog_timer.data = (unsigned long)adapter;
3442 INIT_WORK(&adapter->reset_task, ixgbevf_reset_task);
3443 INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task);
3445 err = ixgbevf_init_interrupt_scheme(adapter);
3449 /* pick up the PCI bus settings for reporting later */
3450 if (hw->mac.ops.get_bus_info)
3451 hw->mac.ops.get_bus_info(hw);
3454 netif_carrier_off(netdev);
3455 netif_tx_stop_all_queues(netdev);
3457 strcpy(netdev->name, "eth%d");
3459 err = register_netdev(netdev);
3463 adapter->netdev_registered = true;
3465 ixgbevf_init_last_counter_stats(adapter);
3467 /* print the MAC address */
3468 hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
3469 netdev->dev_addr[0],
3470 netdev->dev_addr[1],
3471 netdev->dev_addr[2],
3472 netdev->dev_addr[3],
3473 netdev->dev_addr[4],
3474 netdev->dev_addr[5]);
3476 hw_dbg(hw, "MAC: %d\n", hw->mac.type);
3478 hw_dbg(hw, "LRO is disabled\n");
3480 hw_dbg(hw, "Intel(R) 82599 Virtual Function\n");
3486 ixgbevf_reset_interrupt_capability(adapter);
3487 iounmap(hw->hw_addr);
3489 free_netdev(netdev);
3491 pci_release_regions(pdev);
3494 pci_disable_device(pdev);
3499 * ixgbevf_remove - Device Removal Routine
3500 * @pdev: PCI device information struct
3502 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3503 * that it should release a PCI device. The could be caused by a
3504 * Hot-Plug event, or because the driver is going to be removed from
3507 static void __devexit ixgbevf_remove(struct pci_dev *pdev)
3509 struct net_device *netdev = pci_get_drvdata(pdev);
3510 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3512 set_bit(__IXGBEVF_DOWN, &adapter->state);
3514 del_timer_sync(&adapter->watchdog_timer);
3516 cancel_work_sync(&adapter->watchdog_task);
3518 flush_scheduled_work();
3520 if (adapter->netdev_registered) {
3521 unregister_netdev(netdev);
3522 adapter->netdev_registered = false;
3525 ixgbevf_reset_interrupt_capability(adapter);
3527 iounmap(adapter->hw.hw_addr);
3528 pci_release_regions(pdev);
3530 hw_dbg(&adapter->hw, "Remove complete\n");
3532 kfree(adapter->tx_ring);
3533 kfree(adapter->rx_ring);
3535 free_netdev(netdev);
3537 pci_disable_device(pdev);
3540 static struct pci_driver ixgbevf_driver = {
3541 .name = ixgbevf_driver_name,
3542 .id_table = ixgbevf_pci_tbl,
3543 .probe = ixgbevf_probe,
3544 .remove = __devexit_p(ixgbevf_remove),
3545 .shutdown = ixgbevf_shutdown,
3549 * ixgbe_init_module - Driver Registration Routine
3551 * ixgbe_init_module is the first routine called when the driver is
3552 * loaded. All it does is register with the PCI subsystem.
3554 static int __init ixgbevf_init_module(void)
3557 printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string,
3558 ixgbevf_driver_version);
3560 printk(KERN_INFO "%s\n", ixgbevf_copyright);
3562 ret = pci_register_driver(&ixgbevf_driver);
3566 module_init(ixgbevf_init_module);
3569 * ixgbe_exit_module - Driver Exit Cleanup Routine
3571 * ixgbe_exit_module is called just before the driver is removed
3574 static void __exit ixgbevf_exit_module(void)
3576 pci_unregister_driver(&ixgbevf_driver);
3581 * ixgbe_get_hw_dev_name - return device name string
3582 * used by hardware layer to print debugging information
3584 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw)
3586 struct ixgbevf_adapter *adapter = hw->back;
3587 return adapter->netdev->name;
3591 module_exit(ixgbevf_exit_module);
3593 /* ixgbevf_main.c */