Commit | Line | Data |
---|---|---|
f148f61d | 1 | /* |
9d348af4 | 2 | * IBM Power Virtual Ethernet Device Driver |
f148f61d | 3 | * |
9d348af4 SL |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
f148f61d | 8 | * |
9d348af4 SL |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
f148f61d | 13 | * |
9d348af4 | 14 | * You should have received a copy of the GNU General Public License |
0ab75ae8 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
f148f61d | 16 | * |
9d348af4 SL |
17 | * Copyright (C) IBM Corporation, 2003, 2010 |
18 | * | |
19 | * Authors: Dave Larson <larson1@us.ibm.com> | |
20 | * Santiago Leon <santil@linux.vnet.ibm.com> | |
21 | * Brian King <brking@linux.vnet.ibm.com> | |
22 | * Robert Jennings <rcj@linux.vnet.ibm.com> | |
23 | * Anton Blanchard <anton@au.ibm.com> | |
f148f61d | 24 | */ |
1da177e4 | 25 | |
1da177e4 | 26 | #include <linux/module.h> |
1096d63d | 27 | #include <linux/moduleparam.h> |
1da177e4 LT |
28 | #include <linux/types.h> |
29 | #include <linux/errno.h> | |
1da177e4 LT |
30 | #include <linux/dma-mapping.h> |
31 | #include <linux/kernel.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/init.h> | |
a6b7a407 | 36 | #include <linux/interrupt.h> |
1da177e4 | 37 | #include <linux/mm.h> |
e7a3af5d | 38 | #include <linux/pm.h> |
1da177e4 | 39 | #include <linux/ethtool.h> |
f4ff2872 BK |
40 | #include <linux/in.h> |
41 | #include <linux/ip.h> | |
ab78df75 | 42 | #include <linux/ipv6.h> |
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <asm/hvcall.h> |
60063497 | 45 | #include <linux/atomic.h> |
1da177e4 | 46 | #include <asm/vio.h> |
1096d63d | 47 | #include <asm/iommu.h> |
1096d63d | 48 | #include <asm/firmware.h> |
1da177e4 LT |
49 | |
50 | #include "ibmveth.h" | |
51 | ||
7d12e780 | 52 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
493a684a | 53 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
1096d63d | 54 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev); |
e295fe83 | 55 | |
860f242e | 56 | static struct kobj_type ktype_veth_pool; |
1da177e4 | 57 | |
1096d63d | 58 | |
1da177e4 | 59 | static const char ibmveth_driver_name[] = "ibmveth"; |
9d348af4 | 60 | static const char ibmveth_driver_string[] = "IBM Power Virtual Ethernet Driver"; |
8641dd85 | 61 | #define ibmveth_driver_version "1.05" |
1da177e4 | 62 | |
9d348af4 SL |
63 | MODULE_AUTHOR("Santiago Leon <santil@linux.vnet.ibm.com>"); |
64 | MODULE_DESCRIPTION("IBM Power Virtual Ethernet Driver"); | |
1da177e4 LT |
65 | MODULE_LICENSE("GPL"); |
66 | MODULE_VERSION(ibmveth_driver_version); | |
67 | ||
c08cc3cc SL |
68 | static unsigned int tx_copybreak __read_mostly = 128; |
69 | module_param(tx_copybreak, uint, 0644); | |
70 | MODULE_PARM_DESC(tx_copybreak, | |
71 | "Maximum size of packet that is copied to a new buffer on transmit"); | |
72 | ||
8d86c61a SL |
73 | static unsigned int rx_copybreak __read_mostly = 128; |
74 | module_param(rx_copybreak, uint, 0644); | |
75 | MODULE_PARM_DESC(rx_copybreak, | |
76 | "Maximum size of packet that is copied to a new buffer on receive"); | |
77 | ||
0c26b677 SL |
78 | static unsigned int rx_flush __read_mostly = 0; |
79 | module_param(rx_flush, uint, 0644); | |
80 | MODULE_PARM_DESC(rx_flush, "Flush receive buffers before use"); | |
81 | ||
07e6a97d TF |
82 | static bool old_large_send __read_mostly; |
83 | module_param(old_large_send, bool, S_IRUGO); | |
84 | MODULE_PARM_DESC(old_large_send, | |
85 | "Use old large send method on firmware that supports the new method"); | |
86 | ||
ddbb4de9 BK |
87 | struct ibmveth_stat { |
88 | char name[ETH_GSTRING_LEN]; | |
89 | int offset; | |
90 | }; | |
91 | ||
92 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) | |
93 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) | |
94 | ||
95 | struct ibmveth_stat ibmveth_stats[] = { | |
96 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, | |
97 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, | |
f148f61d SL |
98 | { "replenish_add_buff_failure", |
99 | IBMVETH_STAT_OFF(replenish_add_buff_failure) }, | |
100 | { "replenish_add_buff_success", | |
101 | IBMVETH_STAT_OFF(replenish_add_buff_success) }, | |
ddbb4de9 BK |
102 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, |
103 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, | |
ddbb4de9 BK |
104 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
105 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, | |
ab78df75 SL |
106 | { "fw_enabled_ipv4_csum", IBMVETH_STAT_OFF(fw_ipv4_csum_support) }, |
107 | { "fw_enabled_ipv6_csum", IBMVETH_STAT_OFF(fw_ipv6_csum_support) }, | |
8641dd85 | 108 | { "tx_large_packets", IBMVETH_STAT_OFF(tx_large_packets) }, |
07e6a97d TF |
109 | { "rx_large_packets", IBMVETH_STAT_OFF(rx_large_packets) }, |
110 | { "fw_enabled_large_send", IBMVETH_STAT_OFF(fw_large_send_support) } | |
ddbb4de9 BK |
111 | }; |
112 | ||
1da177e4 | 113 | /* simple methods of getting data from the current rxq entry */ |
79ef4a4d BK |
114 | static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter) |
115 | { | |
0b536be7 | 116 | return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off); |
79ef4a4d BK |
117 | } |
118 | ||
119 | static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter) | |
120 | { | |
f148f61d SL |
121 | return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> |
122 | IBMVETH_RXQ_TOGGLE_SHIFT; | |
79ef4a4d BK |
123 | } |
124 | ||
1da177e4 LT |
125 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
126 | { | |
f148f61d | 127 | return ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle; |
1da177e4 LT |
128 | } |
129 | ||
130 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) | |
131 | { | |
f148f61d | 132 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID; |
1da177e4 LT |
133 | } |
134 | ||
135 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) | |
136 | { | |
f148f61d | 137 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK; |
1da177e4 LT |
138 | } |
139 | ||
140 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) | |
141 | { | |
0b536be7 | 142 | return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); |
1da177e4 LT |
143 | } |
144 | ||
f4ff2872 BK |
145 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
146 | { | |
f148f61d | 147 | return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD; |
f4ff2872 BK |
148 | } |
149 | ||
1da177e4 | 150 | /* setup the initial settings for a buffer pool */ |
f148f61d SL |
151 | static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, |
152 | u32 pool_index, u32 pool_size, | |
153 | u32 buff_size, u32 pool_active) | |
1da177e4 LT |
154 | { |
155 | pool->size = pool_size; | |
156 | pool->index = pool_index; | |
157 | pool->buff_size = buff_size; | |
c033a6d1 | 158 | pool->threshold = pool_size * 7 / 8; |
860f242e | 159 | pool->active = pool_active; |
1da177e4 LT |
160 | } |
161 | ||
162 | /* allocate and setup an buffer pool - called during open */ | |
163 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) | |
164 | { | |
165 | int i; | |
166 | ||
d7fbeba6 | 167 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
1da177e4 | 168 | |
f148f61d | 169 | if (!pool->free_map) |
1da177e4 | 170 | return -1; |
1da177e4 | 171 | |
076ef440 | 172 | pool->dma_addr = kcalloc(pool->size, sizeof(dma_addr_t), GFP_KERNEL); |
f148f61d | 173 | if (!pool->dma_addr) { |
1da177e4 LT |
174 | kfree(pool->free_map); |
175 | pool->free_map = NULL; | |
176 | return -1; | |
177 | } | |
178 | ||
a05abcb5 | 179 | pool->skbuff = kcalloc(pool->size, sizeof(void *), GFP_KERNEL); |
1da177e4 | 180 | |
f148f61d | 181 | if (!pool->skbuff) { |
1da177e4 LT |
182 | kfree(pool->dma_addr); |
183 | pool->dma_addr = NULL; | |
184 | ||
185 | kfree(pool->free_map); | |
186 | pool->free_map = NULL; | |
187 | return -1; | |
188 | } | |
189 | ||
f148f61d | 190 | for (i = 0; i < pool->size; ++i) |
1da177e4 | 191 | pool->free_map[i] = i; |
1da177e4 LT |
192 | |
193 | atomic_set(&pool->available, 0); | |
194 | pool->producer_index = 0; | |
195 | pool->consumer_index = 0; | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
0c26b677 SL |
200 | static inline void ibmveth_flush_buffer(void *addr, unsigned long length) |
201 | { | |
202 | unsigned long offset; | |
203 | ||
204 | for (offset = 0; offset < length; offset += SMP_CACHE_BYTES) | |
205 | asm("dcbfl %0,%1" :: "b" (addr), "r" (offset)); | |
206 | } | |
207 | ||
1da177e4 LT |
208 | /* replenish the buffers for a pool. note that we don't need to |
209 | * skb_reserve these since they are used for incoming... | |
210 | */ | |
f148f61d SL |
211 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, |
212 | struct ibmveth_buff_pool *pool) | |
1da177e4 LT |
213 | { |
214 | u32 i; | |
215 | u32 count = pool->size - atomic_read(&pool->available); | |
216 | u32 buffers_added = 0; | |
1096d63d RJ |
217 | struct sk_buff *skb; |
218 | unsigned int free_index, index; | |
219 | u64 correlator; | |
220 | unsigned long lpar_rc; | |
221 | dma_addr_t dma_addr; | |
1da177e4 LT |
222 | |
223 | mb(); | |
224 | ||
f148f61d | 225 | for (i = 0; i < count; ++i) { |
1da177e4 | 226 | union ibmveth_buf_desc desc; |
1da177e4 | 227 | |
003212cc | 228 | skb = netdev_alloc_skb(adapter->netdev, pool->buff_size); |
1da177e4 | 229 | |
f148f61d | 230 | if (!skb) { |
c43ced18 SL |
231 | netdev_dbg(adapter->netdev, |
232 | "replenish: unable to allocate skb\n"); | |
1da177e4 LT |
233 | adapter->replenish_no_mem++; |
234 | break; | |
235 | } | |
236 | ||
047a66d4 | 237 | free_index = pool->consumer_index; |
a613f581 SL |
238 | pool->consumer_index++; |
239 | if (pool->consumer_index >= pool->size) | |
240 | pool->consumer_index = 0; | |
1da177e4 | 241 | index = pool->free_map[free_index]; |
d7fbeba6 | 242 | |
6485911a SL |
243 | BUG_ON(index == IBM_VETH_INVALID_MAP); |
244 | BUG_ON(pool->skbuff[index] != NULL); | |
1da177e4 LT |
245 | |
246 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, | |
247 | pool->buff_size, DMA_FROM_DEVICE); | |
248 | ||
c713e7cb | 249 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
250 | goto failure; |
251 | ||
1da177e4 LT |
252 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
253 | pool->dma_addr[index] = dma_addr; | |
254 | pool->skbuff[index] = skb; | |
255 | ||
256 | correlator = ((u64)pool->index << 32) | index; | |
f148f61d | 257 | *(u64 *)skb->data = correlator; |
1da177e4 | 258 | |
79ef4a4d | 259 | desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size; |
d7fbeba6 | 260 | desc.fields.address = dma_addr; |
1da177e4 | 261 | |
0c26b677 SL |
262 | if (rx_flush) { |
263 | unsigned int len = min(pool->buff_size, | |
264 | adapter->netdev->mtu + | |
265 | IBMVETH_BUFF_OH); | |
266 | ibmveth_flush_buffer(skb->data, len); | |
267 | } | |
f148f61d SL |
268 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, |
269 | desc.desc); | |
d7fbeba6 | 270 | |
f148f61d | 271 | if (lpar_rc != H_SUCCESS) { |
1096d63d | 272 | goto failure; |
f148f61d | 273 | } else { |
1da177e4 LT |
274 | buffers_added++; |
275 | adapter->replenish_add_buff_success++; | |
276 | } | |
277 | } | |
d7fbeba6 | 278 | |
1096d63d RJ |
279 | mb(); |
280 | atomic_add(buffers_added, &(pool->available)); | |
281 | return; | |
282 | ||
283 | failure: | |
284 | pool->free_map[free_index] = index; | |
285 | pool->skbuff[index] = NULL; | |
286 | if (pool->consumer_index == 0) | |
287 | pool->consumer_index = pool->size - 1; | |
288 | else | |
289 | pool->consumer_index--; | |
c713e7cb | 290 | if (!dma_mapping_error(&adapter->vdev->dev, dma_addr)) |
1096d63d RJ |
291 | dma_unmap_single(&adapter->vdev->dev, |
292 | pool->dma_addr[index], pool->buff_size, | |
293 | DMA_FROM_DEVICE); | |
294 | dev_kfree_skb_any(skb); | |
295 | adapter->replenish_add_buff_failure++; | |
296 | ||
1da177e4 LT |
297 | mb(); |
298 | atomic_add(buffers_added, &(pool->available)); | |
299 | } | |
300 | ||
cbd52281 AB |
301 | /* |
302 | * The final 8 bytes of the buffer list is a counter of frames dropped | |
303 | * because there was not a buffer in the buffer list capable of holding | |
304 | * the frame. | |
305 | */ | |
306 | static void ibmveth_update_rx_no_buffer(struct ibmveth_adapter *adapter) | |
307 | { | |
308 | __be64 *p = adapter->buffer_list_addr + 4096 - 8; | |
309 | ||
310 | adapter->rx_no_buffer = be64_to_cpup(p); | |
311 | } | |
312 | ||
e2adbcb4 | 313 | /* replenish routine */ |
d7fbeba6 | 314 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
1da177e4 | 315 | { |
b6d35182 SL |
316 | int i; |
317 | ||
1da177e4 LT |
318 | adapter->replenish_task_cycles++; |
319 | ||
517e80e6 | 320 | for (i = (IBMVETH_NUM_BUFF_POOLS - 1); i >= 0; i--) { |
c033a6d1 SL |
321 | struct ibmveth_buff_pool *pool = &adapter->rx_buff_pool[i]; |
322 | ||
323 | if (pool->active && | |
324 | (atomic_read(&pool->available) < pool->threshold)) | |
325 | ibmveth_replenish_buffer_pool(adapter, pool); | |
326 | } | |
1da177e4 | 327 | |
cbd52281 | 328 | ibmveth_update_rx_no_buffer(adapter); |
1da177e4 LT |
329 | } |
330 | ||
331 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ | |
f148f61d SL |
332 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, |
333 | struct ibmveth_buff_pool *pool) | |
1da177e4 LT |
334 | { |
335 | int i; | |
336 | ||
b4558ea9 JJ |
337 | kfree(pool->free_map); |
338 | pool->free_map = NULL; | |
1da177e4 | 339 | |
f148f61d SL |
340 | if (pool->skbuff && pool->dma_addr) { |
341 | for (i = 0; i < pool->size; ++i) { | |
1da177e4 | 342 | struct sk_buff *skb = pool->skbuff[i]; |
f148f61d | 343 | if (skb) { |
1da177e4 LT |
344 | dma_unmap_single(&adapter->vdev->dev, |
345 | pool->dma_addr[i], | |
346 | pool->buff_size, | |
347 | DMA_FROM_DEVICE); | |
348 | dev_kfree_skb_any(skb); | |
349 | pool->skbuff[i] = NULL; | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
f148f61d | 354 | if (pool->dma_addr) { |
1da177e4 LT |
355 | kfree(pool->dma_addr); |
356 | pool->dma_addr = NULL; | |
357 | } | |
358 | ||
f148f61d | 359 | if (pool->skbuff) { |
1da177e4 LT |
360 | kfree(pool->skbuff); |
361 | pool->skbuff = NULL; | |
362 | } | |
363 | } | |
364 | ||
365 | /* remove a buffer from a pool */ | |
f148f61d SL |
366 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, |
367 | u64 correlator) | |
1da177e4 LT |
368 | { |
369 | unsigned int pool = correlator >> 32; | |
370 | unsigned int index = correlator & 0xffffffffUL; | |
371 | unsigned int free_index; | |
372 | struct sk_buff *skb; | |
373 | ||
6485911a SL |
374 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
375 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); | |
1da177e4 LT |
376 | |
377 | skb = adapter->rx_buff_pool[pool].skbuff[index]; | |
378 | ||
6485911a | 379 | BUG_ON(skb == NULL); |
1da177e4 LT |
380 | |
381 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; | |
382 | ||
383 | dma_unmap_single(&adapter->vdev->dev, | |
384 | adapter->rx_buff_pool[pool].dma_addr[index], | |
385 | adapter->rx_buff_pool[pool].buff_size, | |
386 | DMA_FROM_DEVICE); | |
387 | ||
047a66d4 | 388 | free_index = adapter->rx_buff_pool[pool].producer_index; |
a613f581 SL |
389 | adapter->rx_buff_pool[pool].producer_index++; |
390 | if (adapter->rx_buff_pool[pool].producer_index >= | |
391 | adapter->rx_buff_pool[pool].size) | |
392 | adapter->rx_buff_pool[pool].producer_index = 0; | |
1da177e4 LT |
393 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
394 | ||
395 | mb(); | |
396 | ||
397 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); | |
398 | } | |
399 | ||
400 | /* get the current buffer on the rx queue */ | |
401 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) | |
402 | { | |
403 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; | |
404 | unsigned int pool = correlator >> 32; | |
405 | unsigned int index = correlator & 0xffffffffUL; | |
406 | ||
6485911a SL |
407 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
408 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); | |
1da177e4 LT |
409 | |
410 | return adapter->rx_buff_pool[pool].skbuff[index]; | |
411 | } | |
412 | ||
413 | /* recycle the current buffer on the rx queue */ | |
c6f59d13 | 414 | static int ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) |
1da177e4 LT |
415 | { |
416 | u32 q_index = adapter->rx_queue.index; | |
417 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; | |
418 | unsigned int pool = correlator >> 32; | |
419 | unsigned int index = correlator & 0xffffffffUL; | |
420 | union ibmveth_buf_desc desc; | |
421 | unsigned long lpar_rc; | |
c6f59d13 | 422 | int ret = 1; |
1da177e4 | 423 | |
6485911a SL |
424 | BUG_ON(pool >= IBMVETH_NUM_BUFF_POOLS); |
425 | BUG_ON(index >= adapter->rx_buff_pool[pool].size); | |
1da177e4 | 426 | |
f148f61d | 427 | if (!adapter->rx_buff_pool[pool].active) { |
b6d35182 SL |
428 | ibmveth_rxq_harvest_buffer(adapter); |
429 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); | |
c6f59d13 | 430 | goto out; |
b6d35182 SL |
431 | } |
432 | ||
79ef4a4d BK |
433 | desc.fields.flags_len = IBMVETH_BUF_VALID | |
434 | adapter->rx_buff_pool[pool].buff_size; | |
1da177e4 LT |
435 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
436 | ||
437 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); | |
d7fbeba6 | 438 | |
f148f61d | 439 | if (lpar_rc != H_SUCCESS) { |
c43ced18 SL |
440 | netdev_dbg(adapter->netdev, "h_add_logical_lan_buffer failed " |
441 | "during recycle rc=%ld", lpar_rc); | |
1da177e4 | 442 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
c6f59d13 | 443 | ret = 0; |
1da177e4 LT |
444 | } |
445 | ||
f148f61d | 446 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
1da177e4 LT |
447 | adapter->rx_queue.index = 0; |
448 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
449 | } | |
c6f59d13 AB |
450 | |
451 | out: | |
452 | return ret; | |
1da177e4 LT |
453 | } |
454 | ||
493a684a | 455 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
1da177e4 LT |
456 | { |
457 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); | |
458 | ||
f148f61d | 459 | if (++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
1da177e4 LT |
460 | adapter->rx_queue.index = 0; |
461 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; | |
462 | } | |
463 | } | |
464 | ||
465 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) | |
466 | { | |
b6d35182 | 467 | int i; |
8d8bb39b | 468 | struct device *dev = &adapter->vdev->dev; |
b6d35182 | 469 | |
f148f61d | 470 | if (adapter->buffer_list_addr != NULL) { |
8d8bb39b FT |
471 | if (!dma_mapping_error(dev, adapter->buffer_list_dma)) { |
472 | dma_unmap_single(dev, adapter->buffer_list_dma, 4096, | |
1da177e4 LT |
473 | DMA_BIDIRECTIONAL); |
474 | adapter->buffer_list_dma = DMA_ERROR_CODE; | |
475 | } | |
476 | free_page((unsigned long)adapter->buffer_list_addr); | |
477 | adapter->buffer_list_addr = NULL; | |
d7fbeba6 | 478 | } |
1da177e4 | 479 | |
f148f61d | 480 | if (adapter->filter_list_addr != NULL) { |
8d8bb39b FT |
481 | if (!dma_mapping_error(dev, adapter->filter_list_dma)) { |
482 | dma_unmap_single(dev, adapter->filter_list_dma, 4096, | |
1da177e4 LT |
483 | DMA_BIDIRECTIONAL); |
484 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
485 | } | |
486 | free_page((unsigned long)adapter->filter_list_addr); | |
487 | adapter->filter_list_addr = NULL; | |
488 | } | |
489 | ||
f148f61d | 490 | if (adapter->rx_queue.queue_addr != NULL) { |
d90c92fe SL |
491 | dma_free_coherent(dev, adapter->rx_queue.queue_len, |
492 | adapter->rx_queue.queue_addr, | |
493 | adapter->rx_queue.queue_dma); | |
1da177e4 LT |
494 | adapter->rx_queue.queue_addr = NULL; |
495 | } | |
496 | ||
f148f61d | 497 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
860f242e | 498 | if (adapter->rx_buff_pool[i].active) |
d7fbeba6 | 499 | ibmveth_free_buffer_pool(adapter, |
860f242e | 500 | &adapter->rx_buff_pool[i]); |
1096d63d RJ |
501 | |
502 | if (adapter->bounce_buffer != NULL) { | |
c713e7cb | 503 | if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
1096d63d RJ |
504 | dma_unmap_single(&adapter->vdev->dev, |
505 | adapter->bounce_buffer_dma, | |
506 | adapter->netdev->mtu + IBMVETH_BUFF_OH, | |
507 | DMA_BIDIRECTIONAL); | |
508 | adapter->bounce_buffer_dma = DMA_ERROR_CODE; | |
509 | } | |
510 | kfree(adapter->bounce_buffer); | |
511 | adapter->bounce_buffer = NULL; | |
512 | } | |
1da177e4 LT |
513 | } |
514 | ||
bbedefcc ME |
515 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
516 | union ibmveth_buf_desc rxq_desc, u64 mac_address) | |
517 | { | |
518 | int rc, try_again = 1; | |
519 | ||
f148f61d SL |
520 | /* |
521 | * After a kexec the adapter will still be open, so our attempt to | |
522 | * open it will fail. So if we get a failure we free the adapter and | |
523 | * try again, but only once. | |
524 | */ | |
bbedefcc ME |
525 | retry: |
526 | rc = h_register_logical_lan(adapter->vdev->unit_address, | |
527 | adapter->buffer_list_dma, rxq_desc.desc, | |
528 | adapter->filter_list_dma, mac_address); | |
529 | ||
530 | if (rc != H_SUCCESS && try_again) { | |
531 | do { | |
532 | rc = h_free_logical_lan(adapter->vdev->unit_address); | |
533 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); | |
534 | ||
535 | try_again = 0; | |
536 | goto retry; | |
537 | } | |
538 | ||
539 | return rc; | |
540 | } | |
541 | ||
d746ca95 AB |
542 | static u64 ibmveth_encode_mac_addr(u8 *mac) |
543 | { | |
544 | int i; | |
545 | u64 encoded = 0; | |
546 | ||
547 | for (i = 0; i < ETH_ALEN; i++) | |
548 | encoded = (encoded << 8) | mac[i]; | |
549 | ||
550 | return encoded; | |
551 | } | |
552 | ||
1da177e4 LT |
553 | static int ibmveth_open(struct net_device *netdev) |
554 | { | |
4cf1653a | 555 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
d746ca95 | 556 | u64 mac_address; |
b6d35182 | 557 | int rxq_entries = 1; |
1da177e4 LT |
558 | unsigned long lpar_rc; |
559 | int rc; | |
560 | union ibmveth_buf_desc rxq_desc; | |
b6d35182 | 561 | int i; |
8d8bb39b | 562 | struct device *dev; |
1da177e4 | 563 | |
c43ced18 | 564 | netdev_dbg(netdev, "open starting\n"); |
1da177e4 | 565 | |
bea3348e SH |
566 | napi_enable(&adapter->napi); |
567 | ||
517e80e6 | 568 | for(i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
b6d35182 | 569 | rxq_entries += adapter->rx_buff_pool[i].size; |
d7fbeba6 | 570 | |
1da177e4 LT |
571 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
572 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); | |
d7fbeba6 | 573 | |
f148f61d | 574 | if (!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
21c2dece SL |
575 | netdev_err(netdev, "unable to allocate filter or buffer list " |
576 | "pages\n"); | |
88426f2a DK |
577 | rc = -ENOMEM; |
578 | goto err_out; | |
1da177e4 LT |
579 | } |
580 | ||
d90c92fe SL |
581 | dev = &adapter->vdev->dev; |
582 | ||
f148f61d SL |
583 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * |
584 | rxq_entries; | |
d90c92fe | 585 | adapter->rx_queue.queue_addr = |
d0320f75 JP |
586 | dma_alloc_coherent(dev, adapter->rx_queue.queue_len, |
587 | &adapter->rx_queue.queue_dma, GFP_KERNEL); | |
f148f61d | 588 | if (!adapter->rx_queue.queue_addr) { |
88426f2a DK |
589 | rc = -ENOMEM; |
590 | goto err_out; | |
1da177e4 LT |
591 | } |
592 | ||
8d8bb39b | 593 | adapter->buffer_list_dma = dma_map_single(dev, |
1da177e4 | 594 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
8d8bb39b | 595 | adapter->filter_list_dma = dma_map_single(dev, |
1da177e4 | 596 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
1da177e4 | 597 | |
8d8bb39b | 598 | if ((dma_mapping_error(dev, adapter->buffer_list_dma)) || |
d90c92fe | 599 | (dma_mapping_error(dev, adapter->filter_list_dma))) { |
21c2dece SL |
600 | netdev_err(netdev, "unable to map filter or buffer list " |
601 | "pages\n"); | |
88426f2a DK |
602 | rc = -ENOMEM; |
603 | goto err_out; | |
1da177e4 LT |
604 | } |
605 | ||
606 | adapter->rx_queue.index = 0; | |
607 | adapter->rx_queue.num_slots = rxq_entries; | |
608 | adapter->rx_queue.toggle = 1; | |
609 | ||
d746ca95 | 610 | mac_address = ibmveth_encode_mac_addr(netdev->dev_addr); |
1da177e4 | 611 | |
f148f61d SL |
612 | rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | |
613 | adapter->rx_queue.queue_len; | |
1da177e4 LT |
614 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
615 | ||
c43ced18 SL |
616 | netdev_dbg(netdev, "buffer list @ 0x%p\n", adapter->buffer_list_addr); |
617 | netdev_dbg(netdev, "filter list @ 0x%p\n", adapter->filter_list_addr); | |
618 | netdev_dbg(netdev, "receive q @ 0x%p\n", adapter->rx_queue.queue_addr); | |
1da177e4 | 619 | |
4347ef15 SL |
620 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
621 | ||
bbedefcc | 622 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
1da177e4 | 623 | |
f148f61d | 624 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
625 | netdev_err(netdev, "h_register_logical_lan failed with %ld\n", |
626 | lpar_rc); | |
627 | netdev_err(netdev, "buffer TCE:0x%llx filter TCE:0x%llx rxq " | |
628 | "desc:0x%llx MAC:0x%llx\n", | |
1da177e4 LT |
629 | adapter->buffer_list_dma, |
630 | adapter->filter_list_dma, | |
631 | rxq_desc.desc, | |
632 | mac_address); | |
88426f2a DK |
633 | rc = -ENONET; |
634 | goto err_out; | |
1da177e4 LT |
635 | } |
636 | ||
f148f61d SL |
637 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
638 | if (!adapter->rx_buff_pool[i].active) | |
860f242e SL |
639 | continue; |
640 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { | |
21c2dece | 641 | netdev_err(netdev, "unable to alloc pool\n"); |
860f242e | 642 | adapter->rx_buff_pool[i].active = 0; |
88426f2a DK |
643 | rc = -ENOMEM; |
644 | goto err_out; | |
860f242e SL |
645 | } |
646 | } | |
647 | ||
c43ced18 | 648 | netdev_dbg(netdev, "registering irq 0x%x\n", netdev->irq); |
f148f61d SL |
649 | rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, |
650 | netdev); | |
651 | if (rc != 0) { | |
21c2dece SL |
652 | netdev_err(netdev, "unable to request irq 0x%x, rc %d\n", |
653 | netdev->irq, rc); | |
1da177e4 | 654 | do { |
95de86cf BK |
655 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); |
656 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); | |
1da177e4 | 657 | |
88426f2a | 658 | goto err_out; |
1da177e4 LT |
659 | } |
660 | ||
1096d63d RJ |
661 | adapter->bounce_buffer = |
662 | kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL); | |
663 | if (!adapter->bounce_buffer) { | |
88426f2a | 664 | rc = -ENOMEM; |
e0e8ab59 | 665 | goto err_out_free_irq; |
1096d63d RJ |
666 | } |
667 | adapter->bounce_buffer_dma = | |
668 | dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer, | |
669 | netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL); | |
8d8bb39b | 670 | if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { |
21c2dece | 671 | netdev_err(netdev, "unable to map bounce buffer\n"); |
88426f2a | 672 | rc = -ENOMEM; |
e0e8ab59 | 673 | goto err_out_free_irq; |
1096d63d RJ |
674 | } |
675 | ||
c43ced18 | 676 | netdev_dbg(netdev, "initial replenish cycle\n"); |
7d12e780 | 677 | ibmveth_interrupt(netdev->irq, netdev); |
1da177e4 | 678 | |
e2adbcb4 | 679 | netif_start_queue(netdev); |
1da177e4 | 680 | |
c43ced18 | 681 | netdev_dbg(netdev, "open complete\n"); |
1da177e4 LT |
682 | |
683 | return 0; | |
88426f2a | 684 | |
e0e8ab59 DK |
685 | err_out_free_irq: |
686 | free_irq(netdev->irq, netdev); | |
88426f2a DK |
687 | err_out: |
688 | ibmveth_cleanup(adapter); | |
689 | napi_disable(&adapter->napi); | |
690 | return rc; | |
1da177e4 LT |
691 | } |
692 | ||
693 | static int ibmveth_close(struct net_device *netdev) | |
694 | { | |
4cf1653a | 695 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 696 | long lpar_rc; |
d7fbeba6 | 697 | |
c43ced18 | 698 | netdev_dbg(netdev, "close starting\n"); |
1da177e4 | 699 | |
bea3348e SH |
700 | napi_disable(&adapter->napi); |
701 | ||
860f242e SL |
702 | if (!adapter->pool_config) |
703 | netif_stop_queue(netdev); | |
1da177e4 | 704 | |
ee2e6114 | 705 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
1da177e4 | 706 | |
1da177e4 LT |
707 | do { |
708 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); | |
706c8c93 | 709 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
1da177e4 | 710 | |
f148f61d | 711 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
712 | netdev_err(netdev, "h_free_logical_lan failed with %lx, " |
713 | "continuing with close\n", lpar_rc); | |
1da177e4 LT |
714 | } |
715 | ||
ee2e6114 RJ |
716 | free_irq(netdev->irq, netdev); |
717 | ||
cbd52281 | 718 | ibmveth_update_rx_no_buffer(adapter); |
1da177e4 LT |
719 | |
720 | ibmveth_cleanup(adapter); | |
721 | ||
c43ced18 | 722 | netdev_dbg(netdev, "close complete\n"); |
1da177e4 LT |
723 | |
724 | return 0; | |
725 | } | |
726 | ||
f148f61d SL |
727 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
728 | { | |
729 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | | |
730 | SUPPORTED_FIBRE); | |
731 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | | |
732 | ADVERTISED_FIBRE); | |
70739497 | 733 | ethtool_cmd_speed_set(cmd, SPEED_1000); |
1da177e4 LT |
734 | cmd->duplex = DUPLEX_FULL; |
735 | cmd->port = PORT_FIBRE; | |
736 | cmd->phy_address = 0; | |
737 | cmd->transceiver = XCVR_INTERNAL; | |
738 | cmd->autoneg = AUTONEG_ENABLE; | |
739 | cmd->maxtxpkt = 0; | |
740 | cmd->maxrxpkt = 1; | |
741 | return 0; | |
742 | } | |
743 | ||
f148f61d SL |
744 | static void netdev_get_drvinfo(struct net_device *dev, |
745 | struct ethtool_drvinfo *info) | |
746 | { | |
7826d43f JP |
747 | strlcpy(info->driver, ibmveth_driver_name, sizeof(info->driver)); |
748 | strlcpy(info->version, ibmveth_driver_version, sizeof(info->version)); | |
1da177e4 LT |
749 | } |
750 | ||
c8f44aff MM |
751 | static netdev_features_t ibmveth_fix_features(struct net_device *dev, |
752 | netdev_features_t features) | |
5fc7e01c | 753 | { |
b9367bf3 MM |
754 | /* |
755 | * Since the ibmveth firmware interface does not have the | |
756 | * concept of separate tx/rx checksum offload enable, if rx | |
757 | * checksum is disabled we also have to disable tx checksum | |
758 | * offload. Once we disable rx checksum offload, we are no | |
759 | * longer allowed to send tx buffers that are not properly | |
760 | * checksummed. | |
761 | */ | |
5fc7e01c | 762 | |
b9367bf3 | 763 | if (!(features & NETIF_F_RXCSUM)) |
a188222b | 764 | features &= ~NETIF_F_CSUM_MASK; |
5fc7e01c | 765 | |
b9367bf3 | 766 | return features; |
5fc7e01c BK |
767 | } |
768 | ||
b9367bf3 | 769 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data) |
5fc7e01c | 770 | { |
4cf1653a | 771 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ff5bfc35 | 772 | unsigned long set_attr, clr_attr, ret_attr; |
ab78df75 | 773 | unsigned long set_attr6, clr_attr6; |
fb82fd20 | 774 | long ret, ret4, ret6; |
5fc7e01c BK |
775 | int rc1 = 0, rc2 = 0; |
776 | int restart = 0; | |
777 | ||
778 | if (netif_running(dev)) { | |
779 | restart = 1; | |
780 | adapter->pool_config = 1; | |
781 | ibmveth_close(dev); | |
782 | adapter->pool_config = 0; | |
783 | } | |
784 | ||
79ef4a4d BK |
785 | set_attr = 0; |
786 | clr_attr = 0; | |
fb82fd20 AB |
787 | set_attr6 = 0; |
788 | clr_attr6 = 0; | |
5fc7e01c | 789 | |
ab78df75 | 790 | if (data) { |
79ef4a4d | 791 | set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
ab78df75 SL |
792 | set_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
793 | } else { | |
79ef4a4d | 794 | clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM; |
ab78df75 SL |
795 | clr_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM; |
796 | } | |
5fc7e01c | 797 | |
79ef4a4d | 798 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
5fc7e01c | 799 | |
79ef4a4d BK |
800 | if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) && |
801 | !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) && | |
802 | (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) { | |
fb82fd20 | 803 | ret4 = h_illan_attributes(adapter->vdev->unit_address, clr_attr, |
79ef4a4d | 804 | set_attr, &ret_attr); |
5fc7e01c | 805 | |
fb82fd20 | 806 | if (ret4 != H_SUCCESS) { |
21c2dece SL |
807 | netdev_err(dev, "unable to change IPv4 checksum " |
808 | "offload settings. %d rc=%ld\n", | |
fb82fd20 AB |
809 | data, ret4); |
810 | ||
811 | h_illan_attributes(adapter->vdev->unit_address, | |
812 | set_attr, clr_attr, &ret_attr); | |
813 | ||
814 | if (data == 1) | |
815 | dev->features &= ~NETIF_F_IP_CSUM; | |
5fc7e01c | 816 | |
f148f61d | 817 | } else { |
ab78df75 | 818 | adapter->fw_ipv4_csum_support = data; |
f148f61d | 819 | } |
ab78df75 SL |
820 | |
821 | ret6 = h_illan_attributes(adapter->vdev->unit_address, | |
822 | clr_attr6, set_attr6, &ret_attr); | |
823 | ||
824 | if (ret6 != H_SUCCESS) { | |
21c2dece SL |
825 | netdev_err(dev, "unable to change IPv6 checksum " |
826 | "offload settings. %d rc=%ld\n", | |
fb82fd20 AB |
827 | data, ret6); |
828 | ||
829 | h_illan_attributes(adapter->vdev->unit_address, | |
830 | set_attr6, clr_attr6, &ret_attr); | |
831 | ||
832 | if (data == 1) | |
833 | dev->features &= ~NETIF_F_IPV6_CSUM; | |
ab78df75 | 834 | |
ab78df75 SL |
835 | } else |
836 | adapter->fw_ipv6_csum_support = data; | |
837 | ||
fb82fd20 | 838 | if (ret4 == H_SUCCESS || ret6 == H_SUCCESS) |
b9367bf3 | 839 | adapter->rx_csum = data; |
ab78df75 SL |
840 | else |
841 | rc1 = -EIO; | |
5fc7e01c BK |
842 | } else { |
843 | rc1 = -EIO; | |
21c2dece SL |
844 | netdev_err(dev, "unable to change checksum offload settings." |
845 | " %d rc=%ld ret_attr=%lx\n", data, ret, | |
846 | ret_attr); | |
5fc7e01c BK |
847 | } |
848 | ||
849 | if (restart) | |
850 | rc2 = ibmveth_open(dev); | |
851 | ||
852 | return rc1 ? rc1 : rc2; | |
853 | } | |
854 | ||
07e6a97d TF |
855 | static int ibmveth_set_tso(struct net_device *dev, u32 data) |
856 | { | |
857 | struct ibmveth_adapter *adapter = netdev_priv(dev); | |
858 | unsigned long set_attr, clr_attr, ret_attr; | |
859 | long ret1, ret2; | |
860 | int rc1 = 0, rc2 = 0; | |
861 | int restart = 0; | |
862 | ||
863 | if (netif_running(dev)) { | |
864 | restart = 1; | |
865 | adapter->pool_config = 1; | |
866 | ibmveth_close(dev); | |
867 | adapter->pool_config = 0; | |
868 | } | |
869 | ||
870 | set_attr = 0; | |
871 | clr_attr = 0; | |
872 | ||
873 | if (data) | |
874 | set_attr = IBMVETH_ILLAN_LRG_SR_ENABLED; | |
875 | else | |
876 | clr_attr = IBMVETH_ILLAN_LRG_SR_ENABLED; | |
877 | ||
878 | ret1 = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); | |
879 | ||
880 | if (ret1 == H_SUCCESS && (ret_attr & IBMVETH_ILLAN_LRG_SND_SUPPORT) && | |
881 | !old_large_send) { | |
882 | ret2 = h_illan_attributes(adapter->vdev->unit_address, clr_attr, | |
883 | set_attr, &ret_attr); | |
884 | ||
885 | if (ret2 != H_SUCCESS) { | |
886 | netdev_err(dev, "unable to change tso settings. %d rc=%ld\n", | |
887 | data, ret2); | |
888 | ||
889 | h_illan_attributes(adapter->vdev->unit_address, | |
890 | set_attr, clr_attr, &ret_attr); | |
891 | ||
892 | if (data == 1) | |
893 | dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); | |
894 | rc1 = -EIO; | |
895 | ||
896 | } else { | |
897 | adapter->fw_large_send_support = data; | |
898 | adapter->large_send = data; | |
899 | } | |
900 | } else { | |
901 | /* Older firmware version of large send offload does not | |
902 | * support tcp6/ipv6 | |
903 | */ | |
904 | if (data == 1) { | |
905 | dev->features &= ~NETIF_F_TSO6; | |
906 | netdev_info(dev, "TSO feature requires all partitions to have updated driver"); | |
907 | } | |
908 | adapter->large_send = data; | |
909 | } | |
910 | ||
911 | if (restart) | |
912 | rc2 = ibmveth_open(dev); | |
913 | ||
914 | return rc1 ? rc1 : rc2; | |
915 | } | |
916 | ||
c8f44aff MM |
917 | static int ibmveth_set_features(struct net_device *dev, |
918 | netdev_features_t features) | |
5fc7e01c | 919 | { |
4cf1653a | 920 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
b9367bf3 | 921 | int rx_csum = !!(features & NETIF_F_RXCSUM); |
07e6a97d TF |
922 | int large_send = !!(features & (NETIF_F_TSO | NETIF_F_TSO6)); |
923 | int rc1 = 0, rc2 = 0; | |
5fc7e01c | 924 | |
07e6a97d TF |
925 | if (rx_csum != adapter->rx_csum) { |
926 | rc1 = ibmveth_set_csum_offload(dev, rx_csum); | |
927 | if (rc1 && !adapter->rx_csum) | |
928 | dev->features = | |
a188222b TH |
929 | features & ~(NETIF_F_CSUM_MASK | |
930 | NETIF_F_RXCSUM); | |
07e6a97d | 931 | } |
5fc7e01c | 932 | |
07e6a97d TF |
933 | if (large_send != adapter->large_send) { |
934 | rc2 = ibmveth_set_tso(dev, large_send); | |
935 | if (rc2 && !adapter->large_send) | |
936 | dev->features = | |
937 | features & ~(NETIF_F_TSO | NETIF_F_TSO6); | |
938 | } | |
5fc7e01c | 939 | |
07e6a97d | 940 | return rc1 ? rc1 : rc2; |
5fc7e01c BK |
941 | } |
942 | ||
ddbb4de9 BK |
943 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
944 | { | |
945 | int i; | |
946 | ||
947 | if (stringset != ETH_SS_STATS) | |
948 | return; | |
949 | ||
950 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) | |
951 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); | |
952 | } | |
953 | ||
b9f2c044 | 954 | static int ibmveth_get_sset_count(struct net_device *dev, int sset) |
ddbb4de9 | 955 | { |
b9f2c044 JG |
956 | switch (sset) { |
957 | case ETH_SS_STATS: | |
958 | return ARRAY_SIZE(ibmveth_stats); | |
959 | default: | |
960 | return -EOPNOTSUPP; | |
961 | } | |
ddbb4de9 BK |
962 | } |
963 | ||
964 | static void ibmveth_get_ethtool_stats(struct net_device *dev, | |
965 | struct ethtool_stats *stats, u64 *data) | |
966 | { | |
967 | int i; | |
4cf1653a | 968 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
ddbb4de9 BK |
969 | |
970 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) | |
971 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); | |
972 | } | |
973 | ||
7282d491 | 974 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
975 | .get_drvinfo = netdev_get_drvinfo, |
976 | .get_settings = netdev_get_settings, | |
ed4ba4b5 | 977 | .get_link = ethtool_op_get_link, |
ddbb4de9 | 978 | .get_strings = ibmveth_get_strings, |
b9f2c044 | 979 | .get_sset_count = ibmveth_get_sset_count, |
ddbb4de9 | 980 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
1da177e4 LT |
981 | }; |
982 | ||
983 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
984 | { | |
985 | return -EOPNOTSUPP; | |
986 | } | |
987 | ||
988 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) | |
989 | ||
6e8ab30e | 990 | static int ibmveth_send(struct ibmveth_adapter *adapter, |
07e6a97d | 991 | union ibmveth_buf_desc *descs, unsigned long mss) |
1da177e4 | 992 | { |
1da177e4 LT |
993 | unsigned long correlator; |
994 | unsigned int retry_count; | |
6e8ab30e SL |
995 | unsigned long ret; |
996 | ||
997 | /* | |
998 | * The retry count sets a maximum for the number of broadcast and | |
999 | * multicast destinations within the system. | |
1000 | */ | |
1001 | retry_count = 1024; | |
1002 | correlator = 0; | |
1003 | do { | |
1004 | ret = h_send_logical_lan(adapter->vdev->unit_address, | |
1005 | descs[0].desc, descs[1].desc, | |
1006 | descs[2].desc, descs[3].desc, | |
1007 | descs[4].desc, descs[5].desc, | |
07e6a97d TF |
1008 | correlator, &correlator, mss, |
1009 | adapter->fw_large_send_support); | |
6e8ab30e SL |
1010 | } while ((ret == H_BUSY) && (retry_count--)); |
1011 | ||
1012 | if (ret != H_SUCCESS && ret != H_DROPPED) { | |
21c2dece SL |
1013 | netdev_err(adapter->netdev, "tx: h_send_logical_lan failed " |
1014 | "with rc=%ld\n", ret); | |
6e8ab30e SL |
1015 | return 1; |
1016 | } | |
1017 | ||
1018 | return 0; | |
1019 | } | |
60296d9e | 1020 | |
6e8ab30e SL |
1021 | static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb, |
1022 | struct net_device *netdev) | |
1023 | { | |
1024 | struct ibmveth_adapter *adapter = netdev_priv(netdev); | |
1025 | unsigned int desc_flags; | |
1026 | union ibmveth_buf_desc descs[6]; | |
1027 | int last, i; | |
1028 | int force_bounce = 0; | |
b93da27f | 1029 | dma_addr_t dma_addr; |
07e6a97d | 1030 | unsigned long mss = 0; |
6e8ab30e SL |
1031 | |
1032 | /* | |
1033 | * veth handles a maximum of 6 segments including the header, so | |
1034 | * we have to linearize the skb if there are more than this. | |
1035 | */ | |
1036 | if (skb_shinfo(skb)->nr_frags > 5 && __skb_linearize(skb)) { | |
1037 | netdev->stats.tx_dropped++; | |
1038 | goto out; | |
1039 | } | |
1da177e4 | 1040 | |
6e8ab30e | 1041 | /* veth can't checksum offload UDP */ |
f4ff2872 | 1042 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
ab78df75 SL |
1043 | ((skb->protocol == htons(ETH_P_IP) && |
1044 | ip_hdr(skb)->protocol != IPPROTO_TCP) || | |
1045 | (skb->protocol == htons(ETH_P_IPV6) && | |
1046 | ipv6_hdr(skb)->nexthdr != IPPROTO_TCP)) && | |
1047 | skb_checksum_help(skb)) { | |
1048 | ||
21c2dece | 1049 | netdev_err(netdev, "tx: failed to checksum packet\n"); |
6e8ab30e | 1050 | netdev->stats.tx_dropped++; |
f4ff2872 BK |
1051 | goto out; |
1052 | } | |
1053 | ||
6e8ab30e SL |
1054 | desc_flags = IBMVETH_BUF_VALID; |
1055 | ||
07e6a97d TF |
1056 | if (skb_is_gso(skb) && adapter->fw_large_send_support) |
1057 | desc_flags |= IBMVETH_BUF_LRG_SND; | |
1058 | ||
f4ff2872 | 1059 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
6e8ab30e SL |
1060 | unsigned char *buf = skb_transport_header(skb) + |
1061 | skb->csum_offset; | |
f4ff2872 | 1062 | |
6e8ab30e | 1063 | desc_flags |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD); |
f4ff2872 BK |
1064 | |
1065 | /* Need to zero out the checksum */ | |
1066 | buf[0] = 0; | |
1067 | buf[1] = 0; | |
1068 | } | |
1069 | ||
6e8ab30e SL |
1070 | retry_bounce: |
1071 | memset(descs, 0, sizeof(descs)); | |
c08cc3cc | 1072 | |
6e8ab30e SL |
1073 | /* |
1074 | * If a linear packet is below the rx threshold then | |
1075 | * copy it into the static bounce buffer. This avoids the | |
1076 | * cost of a TCE insert and remove. | |
1077 | */ | |
1078 | if (force_bounce || (!skb_is_nonlinear(skb) && | |
1079 | (skb->len < tx_copybreak))) { | |
1096d63d RJ |
1080 | skb_copy_from_linear_data(skb, adapter->bounce_buffer, |
1081 | skb->len); | |
1da177e4 | 1082 | |
6e8ab30e SL |
1083 | descs[0].fields.flags_len = desc_flags | skb->len; |
1084 | descs[0].fields.address = adapter->bounce_buffer_dma; | |
1085 | ||
07e6a97d | 1086 | if (ibmveth_send(adapter, descs, 0)) { |
6e8ab30e SL |
1087 | adapter->tx_send_failed++; |
1088 | netdev->stats.tx_dropped++; | |
1089 | } else { | |
1090 | netdev->stats.tx_packets++; | |
1091 | netdev->stats.tx_bytes += skb->len; | |
1092 | } | |
1093 | ||
1094 | goto out; | |
1095 | } | |
1096 | ||
1097 | /* Map the header */ | |
b93da27f AB |
1098 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
1099 | skb_headlen(skb), DMA_TO_DEVICE); | |
1100 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) | |
6e8ab30e SL |
1101 | goto map_failed; |
1102 | ||
1103 | descs[0].fields.flags_len = desc_flags | skb_headlen(skb); | |
b93da27f | 1104 | descs[0].fields.address = dma_addr; |
6e8ab30e SL |
1105 | |
1106 | /* Map the frags */ | |
1107 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
9e903e08 | 1108 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
6e8ab30e | 1109 | |
8838a538 | 1110 | dma_addr = skb_frag_dma_map(&adapter->vdev->dev, frag, 0, |
9e903e08 | 1111 | skb_frag_size(frag), DMA_TO_DEVICE); |
6e8ab30e SL |
1112 | |
1113 | if (dma_mapping_error(&adapter->vdev->dev, dma_addr)) | |
1114 | goto map_failed_frags; | |
1115 | ||
9e903e08 | 1116 | descs[i+1].fields.flags_len = desc_flags | skb_frag_size(frag); |
6e8ab30e SL |
1117 | descs[i+1].fields.address = dma_addr; |
1118 | } | |
1119 | ||
07e6a97d TF |
1120 | if (skb_is_gso(skb)) { |
1121 | if (adapter->fw_large_send_support) { | |
1122 | mss = (unsigned long)skb_shinfo(skb)->gso_size; | |
1123 | adapter->tx_large_packets++; | |
1124 | } else if (!skb_is_gso_v6(skb)) { | |
1125 | /* Put -1 in the IP checksum to tell phyp it | |
1126 | * is a largesend packet. Put the mss in | |
1127 | * the TCP checksum. | |
1128 | */ | |
1129 | ip_hdr(skb)->check = 0xffff; | |
1130 | tcp_hdr(skb)->check = | |
1131 | cpu_to_be16(skb_shinfo(skb)->gso_size); | |
1132 | adapter->tx_large_packets++; | |
1133 | } | |
8641dd85 TF |
1134 | } |
1135 | ||
07e6a97d | 1136 | if (ibmveth_send(adapter, descs, mss)) { |
6e8ab30e SL |
1137 | adapter->tx_send_failed++; |
1138 | netdev->stats.tx_dropped++; | |
1da177e4 | 1139 | } else { |
6e8ab30e SL |
1140 | netdev->stats.tx_packets++; |
1141 | netdev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
1142 | } |
1143 | ||
33a48ab1 BK |
1144 | dma_unmap_single(&adapter->vdev->dev, |
1145 | descs[0].fields.address, | |
1146 | descs[0].fields.flags_len & IBMVETH_BUF_LEN_MASK, | |
1147 | DMA_TO_DEVICE); | |
1148 | ||
1149 | for (i = 1; i < skb_shinfo(skb)->nr_frags + 1; i++) | |
6e8ab30e SL |
1150 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, |
1151 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, | |
1152 | DMA_TO_DEVICE); | |
1da177e4 | 1153 | |
e8cb7eb4 | 1154 | out: |
26faa9d7 | 1155 | dev_consume_skb_any(skb); |
6ed10654 | 1156 | return NETDEV_TX_OK; |
6e8ab30e SL |
1157 | |
1158 | map_failed_frags: | |
1159 | last = i+1; | |
1160 | for (i = 0; i < last; i++) | |
1161 | dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address, | |
1162 | descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK, | |
1163 | DMA_TO_DEVICE); | |
1164 | ||
1165 | map_failed: | |
1166 | if (!firmware_has_feature(FW_FEATURE_CMO)) | |
21c2dece | 1167 | netdev_err(netdev, "tx: unable to map xmit buffer\n"); |
6e8ab30e | 1168 | adapter->tx_map_failed++; |
2c42bf4b TF |
1169 | if (skb_linearize(skb)) { |
1170 | netdev->stats.tx_dropped++; | |
1171 | goto out; | |
1172 | } | |
6e8ab30e SL |
1173 | force_bounce = 1; |
1174 | goto retry_bounce; | |
1da177e4 LT |
1175 | } |
1176 | ||
bea3348e | 1177 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
1da177e4 | 1178 | { |
f148f61d SL |
1179 | struct ibmveth_adapter *adapter = |
1180 | container_of(napi, struct ibmveth_adapter, napi); | |
bea3348e | 1181 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 1182 | int frames_processed = 0; |
1da177e4 | 1183 | unsigned long lpar_rc; |
9c7e8bc5 | 1184 | struct iphdr *iph; |
1da177e4 | 1185 | |
f148f61d | 1186 | restart_poll: |
cb013ea1 | 1187 | while (frames_processed < budget) { |
bea3348e SH |
1188 | if (!ibmveth_rxq_pending_buffer(adapter)) |
1189 | break; | |
1da177e4 | 1190 | |
f89e49e7 | 1191 | smp_rmb(); |
bea3348e SH |
1192 | if (!ibmveth_rxq_buffer_valid(adapter)) { |
1193 | wmb(); /* suggested by larson1 */ | |
1194 | adapter->rx_invalid_buffer++; | |
c43ced18 | 1195 | netdev_dbg(netdev, "recycling invalid buffer\n"); |
bea3348e SH |
1196 | ibmveth_rxq_recycle_buffer(adapter); |
1197 | } else { | |
8d86c61a | 1198 | struct sk_buff *skb, *new_skb; |
bea3348e SH |
1199 | int length = ibmveth_rxq_frame_length(adapter); |
1200 | int offset = ibmveth_rxq_frame_offset(adapter); | |
f4ff2872 BK |
1201 | int csum_good = ibmveth_rxq_csum_good(adapter); |
1202 | ||
bea3348e | 1203 | skb = ibmveth_rxq_get_buffer(adapter); |
1da177e4 | 1204 | |
8d86c61a SL |
1205 | new_skb = NULL; |
1206 | if (length < rx_copybreak) | |
1207 | new_skb = netdev_alloc_skb(netdev, length); | |
1208 | ||
1209 | if (new_skb) { | |
1210 | skb_copy_to_linear_data(new_skb, | |
1211 | skb->data + offset, | |
1212 | length); | |
0c26b677 SL |
1213 | if (rx_flush) |
1214 | ibmveth_flush_buffer(skb->data, | |
1215 | length + offset); | |
c6f59d13 AB |
1216 | if (!ibmveth_rxq_recycle_buffer(adapter)) |
1217 | kfree_skb(skb); | |
8d86c61a | 1218 | skb = new_skb; |
8d86c61a SL |
1219 | } else { |
1220 | ibmveth_rxq_harvest_buffer(adapter); | |
1221 | skb_reserve(skb, offset); | |
1222 | } | |
1da177e4 | 1223 | |
bea3348e SH |
1224 | skb_put(skb, length); |
1225 | skb->protocol = eth_type_trans(skb, netdev); | |
1da177e4 | 1226 | |
9c7e8bc5 | 1227 | if (csum_good) { |
8d86c61a | 1228 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9c7e8bc5 TF |
1229 | if (be16_to_cpu(skb->protocol) == ETH_P_IP) { |
1230 | iph = (struct iphdr *)skb->data; | |
1231 | ||
1232 | /* If the IP checksum is not offloaded and if the packet | |
1233 | * is large send, the checksum must be rebuilt. | |
1234 | */ | |
1235 | if (iph->check == 0xffff) { | |
1236 | iph->check = 0; | |
1237 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
1238 | adapter->rx_large_packets++; | |
1239 | } | |
1240 | } | |
1241 | } | |
8d86c61a | 1242 | |
92ec8279 | 1243 | napi_gro_receive(napi, skb); /* send it up */ |
1da177e4 | 1244 | |
09f75cd7 JG |
1245 | netdev->stats.rx_packets++; |
1246 | netdev->stats.rx_bytes += length; | |
bea3348e | 1247 | frames_processed++; |
1da177e4 | 1248 | } |
cb013ea1 | 1249 | } |
1da177e4 | 1250 | |
e2adbcb4 | 1251 | ibmveth_replenish_task(adapter); |
1da177e4 | 1252 | |
bea3348e | 1253 | if (frames_processed < budget) { |
4736edc7 YP |
1254 | napi_complete(napi); |
1255 | ||
bea3348e SH |
1256 | /* We think we are done - reenable interrupts, |
1257 | * then check once more to make sure we are done. | |
1258 | */ | |
1259 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, | |
1260 | VIO_IRQ_ENABLE); | |
1da177e4 | 1261 | |
6485911a | 1262 | BUG_ON(lpar_rc != H_SUCCESS); |
1da177e4 | 1263 | |
bea3348e | 1264 | if (ibmveth_rxq_pending_buffer(adapter) && |
288379f0 | 1265 | napi_reschedule(napi)) { |
bea3348e SH |
1266 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1267 | VIO_IRQ_DISABLE); | |
1268 | goto restart_poll; | |
1269 | } | |
1da177e4 LT |
1270 | } |
1271 | ||
bea3348e | 1272 | return frames_processed; |
1da177e4 LT |
1273 | } |
1274 | ||
7d12e780 | 1275 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
d7fbeba6 | 1276 | { |
1da177e4 | 1277 | struct net_device *netdev = dev_instance; |
4cf1653a | 1278 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1279 | unsigned long lpar_rc; |
1280 | ||
288379f0 | 1281 | if (napi_schedule_prep(&adapter->napi)) { |
bea3348e SH |
1282 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
1283 | VIO_IRQ_DISABLE); | |
6485911a | 1284 | BUG_ON(lpar_rc != H_SUCCESS); |
288379f0 | 1285 | __napi_schedule(&adapter->napi); |
1da177e4 LT |
1286 | } |
1287 | return IRQ_HANDLED; | |
1288 | } | |
1289 | ||
1da177e4 LT |
1290 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
1291 | { | |
4cf1653a | 1292 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1293 | unsigned long lpar_rc; |
1294 | ||
4cd24eaf JP |
1295 | if ((netdev->flags & IFF_PROMISC) || |
1296 | (netdev_mc_count(netdev) > adapter->mcastFilterSize)) { | |
1da177e4 LT |
1297 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1298 | IbmVethMcastEnableRecv | | |
1299 | IbmVethMcastDisableFiltering, | |
1300 | 0); | |
f148f61d | 1301 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
1302 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
1303 | "entering promisc mode\n", lpar_rc); | |
1da177e4 LT |
1304 | } |
1305 | } else { | |
22bedad3 | 1306 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1307 | /* clear the filter table & disable filtering */ |
1308 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1309 | IbmVethMcastEnableRecv | | |
1310 | IbmVethMcastDisableFiltering | | |
1311 | IbmVethMcastClearFilterTable, | |
1312 | 0); | |
f148f61d | 1313 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
1314 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
1315 | "attempting to clear filter table\n", | |
1316 | lpar_rc); | |
1da177e4 LT |
1317 | } |
1318 | /* add the addresses to the filter table */ | |
22bedad3 | 1319 | netdev_for_each_mc_addr(ha, netdev) { |
f148f61d | 1320 | /* add the multicast address to the filter table */ |
d746ca95 AB |
1321 | u64 mcast_addr; |
1322 | mcast_addr = ibmveth_encode_mac_addr(ha->addr); | |
1da177e4 LT |
1323 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
1324 | IbmVethMcastAddFilter, | |
1325 | mcast_addr); | |
f148f61d | 1326 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
1327 | netdev_err(netdev, "h_multicast_ctrl rc=%ld " |
1328 | "when adding an entry to the filter " | |
1329 | "table\n", lpar_rc); | |
1da177e4 LT |
1330 | } |
1331 | } | |
d7fbeba6 | 1332 | |
1da177e4 LT |
1333 | /* re-enable filtering */ |
1334 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, | |
1335 | IbmVethMcastEnableFiltering, | |
1336 | 0); | |
f148f61d | 1337 | if (lpar_rc != H_SUCCESS) { |
21c2dece SL |
1338 | netdev_err(netdev, "h_multicast_ctrl rc=%ld when " |
1339 | "enabling filtering\n", lpar_rc); | |
1da177e4 LT |
1340 | } |
1341 | } | |
1342 | } | |
1343 | ||
1344 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) | |
1345 | { | |
4cf1653a | 1346 | struct ibmveth_adapter *adapter = netdev_priv(dev); |
1096d63d | 1347 | struct vio_dev *viodev = adapter->vdev; |
860f242e | 1348 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
0645bab7 RJ |
1349 | int i, rc; |
1350 | int need_restart = 0; | |
b6d35182 | 1351 | |
517e80e6 | 1352 | if (new_mtu < IBMVETH_MIN_MTU) |
1da177e4 | 1353 | return -EINVAL; |
b6d35182 | 1354 | |
517e80e6 | 1355 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
4fce1482 | 1356 | if (new_mtu_oh <= adapter->rx_buff_pool[i].buff_size) |
ce6eea58 BK |
1357 | break; |
1358 | ||
517e80e6 | 1359 | if (i == IBMVETH_NUM_BUFF_POOLS) |
ce6eea58 BK |
1360 | return -EINVAL; |
1361 | ||
ea866e65 SL |
1362 | /* Deactivate all the buffer pools so that the next loop can activate |
1363 | only the buffer pools necessary to hold the new MTU */ | |
0645bab7 RJ |
1364 | if (netif_running(adapter->netdev)) { |
1365 | need_restart = 1; | |
1366 | adapter->pool_config = 1; | |
1367 | ibmveth_close(adapter->netdev); | |
1368 | adapter->pool_config = 0; | |
1369 | } | |
ea866e65 | 1370 | |
860f242e | 1371 | /* Look for an active buffer pool that can hold the new MTU */ |
f148f61d | 1372 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
ea866e65 | 1373 | adapter->rx_buff_pool[i].active = 1; |
ce6eea58 | 1374 | |
4fce1482 | 1375 | if (new_mtu_oh <= adapter->rx_buff_pool[i].buff_size) { |
1096d63d RJ |
1376 | dev->mtu = new_mtu; |
1377 | vio_cmo_set_dev_desired(viodev, | |
1378 | ibmveth_get_desired_dma | |
1379 | (viodev)); | |
0645bab7 RJ |
1380 | if (need_restart) { |
1381 | return ibmveth_open(adapter->netdev); | |
1382 | } | |
860f242e | 1383 | return 0; |
b6d35182 | 1384 | } |
b6d35182 | 1385 | } |
0645bab7 RJ |
1386 | |
1387 | if (need_restart && (rc = ibmveth_open(adapter->netdev))) | |
1388 | return rc; | |
1389 | ||
860f242e | 1390 | return -EINVAL; |
1da177e4 LT |
1391 | } |
1392 | ||
6b422374 SL |
1393 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1394 | static void ibmveth_poll_controller(struct net_device *dev) | |
1395 | { | |
4cf1653a | 1396 | ibmveth_replenish_task(netdev_priv(dev)); |
5f77113c | 1397 | ibmveth_interrupt(dev->irq, dev); |
6b422374 SL |
1398 | } |
1399 | #endif | |
1400 | ||
1096d63d RJ |
1401 | /** |
1402 | * ibmveth_get_desired_dma - Calculate IO memory desired by the driver | |
1403 | * | |
1404 | * @vdev: struct vio_dev for the device whose desired IO mem is to be returned | |
1405 | * | |
1406 | * Return value: | |
1407 | * Number of bytes of IO data the driver will need to perform well. | |
1408 | */ | |
1409 | static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev) | |
1410 | { | |
1411 | struct net_device *netdev = dev_get_drvdata(&vdev->dev); | |
1412 | struct ibmveth_adapter *adapter; | |
d0847757 | 1413 | struct iommu_table *tbl; |
1096d63d RJ |
1414 | unsigned long ret; |
1415 | int i; | |
1416 | int rxqentries = 1; | |
1417 | ||
d0847757 AP |
1418 | tbl = get_iommu_table_base(&vdev->dev); |
1419 | ||
1096d63d RJ |
1420 | /* netdev inits at probe time along with the structures we need below*/ |
1421 | if (netdev == NULL) | |
d0847757 | 1422 | return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT, tbl); |
1096d63d RJ |
1423 | |
1424 | adapter = netdev_priv(netdev); | |
1425 | ||
1426 | ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE; | |
d0847757 | 1427 | ret += IOMMU_PAGE_ALIGN(netdev->mtu, tbl); |
1096d63d | 1428 | |
517e80e6 | 1429 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
1096d63d RJ |
1430 | /* add the size of the active receive buffers */ |
1431 | if (adapter->rx_buff_pool[i].active) | |
1432 | ret += | |
1433 | adapter->rx_buff_pool[i].size * | |
1434 | IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i]. | |
d0847757 | 1435 | buff_size, tbl); |
1096d63d RJ |
1436 | rxqentries += adapter->rx_buff_pool[i].size; |
1437 | } | |
1438 | /* add the size of the receive queue entries */ | |
d0847757 AP |
1439 | ret += IOMMU_PAGE_ALIGN( |
1440 | rxqentries * sizeof(struct ibmveth_rx_q_entry), tbl); | |
1096d63d RJ |
1441 | |
1442 | return ret; | |
1443 | } | |
1444 | ||
c77c761f TF |
1445 | static int ibmveth_set_mac_addr(struct net_device *dev, void *p) |
1446 | { | |
1447 | struct ibmveth_adapter *adapter = netdev_priv(dev); | |
1448 | struct sockaddr *addr = p; | |
1449 | u64 mac_address; | |
1450 | int rc; | |
1451 | ||
1452 | if (!is_valid_ether_addr(addr->sa_data)) | |
1453 | return -EADDRNOTAVAIL; | |
1454 | ||
1455 | mac_address = ibmveth_encode_mac_addr(addr->sa_data); | |
1456 | rc = h_change_logical_lan_mac(adapter->vdev->unit_address, mac_address); | |
1457 | if (rc) { | |
1458 | netdev_err(adapter->netdev, "h_change_logical_lan_mac failed with rc=%d\n", rc); | |
1459 | return rc; | |
1460 | } | |
1461 | ||
1462 | ether_addr_copy(dev->dev_addr, addr->sa_data); | |
1463 | ||
1464 | return 0; | |
1465 | } | |
1466 | ||
e186d174 AB |
1467 | static const struct net_device_ops ibmveth_netdev_ops = { |
1468 | .ndo_open = ibmveth_open, | |
1469 | .ndo_stop = ibmveth_close, | |
1470 | .ndo_start_xmit = ibmveth_start_xmit, | |
afc4b13d | 1471 | .ndo_set_rx_mode = ibmveth_set_multicast_list, |
e186d174 AB |
1472 | .ndo_do_ioctl = ibmveth_ioctl, |
1473 | .ndo_change_mtu = ibmveth_change_mtu, | |
b9367bf3 MM |
1474 | .ndo_fix_features = ibmveth_fix_features, |
1475 | .ndo_set_features = ibmveth_set_features, | |
e186d174 | 1476 | .ndo_validate_addr = eth_validate_addr, |
c77c761f | 1477 | .ndo_set_mac_address = ibmveth_set_mac_addr, |
e186d174 AB |
1478 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1479 | .ndo_poll_controller = ibmveth_poll_controller, | |
1480 | #endif | |
1481 | }; | |
1482 | ||
1dd06ae8 | 1483 | static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
1da177e4 | 1484 | { |
13f85203 | 1485 | int rc, i, mac_len; |
1da177e4 | 1486 | struct net_device *netdev; |
9dc83afd | 1487 | struct ibmveth_adapter *adapter; |
1da177e4 LT |
1488 | unsigned char *mac_addr_p; |
1489 | unsigned int *mcastFilterSize_p; | |
07e6a97d TF |
1490 | long ret; |
1491 | unsigned long ret_attr; | |
1da177e4 | 1492 | |
c43ced18 SL |
1493 | dev_dbg(&dev->dev, "entering ibmveth_probe for UA 0x%x\n", |
1494 | dev->unit_address); | |
1da177e4 | 1495 | |
f148f61d | 1496 | mac_addr_p = (unsigned char *)vio_get_attribute(dev, VETH_MAC_ADDR, |
13f85203 | 1497 | &mac_len); |
f148f61d | 1498 | if (!mac_addr_p) { |
21c2dece | 1499 | dev_err(&dev->dev, "Can't find VETH_MAC_ADDR attribute\n"); |
be35ae9e | 1500 | return -EINVAL; |
1da177e4 | 1501 | } |
13f85203 BH |
1502 | /* Workaround for old/broken pHyp */ |
1503 | if (mac_len == 8) | |
1504 | mac_addr_p += 2; | |
1505 | else if (mac_len != 6) { | |
1506 | dev_err(&dev->dev, "VETH_MAC_ADDR attribute wrong len %d\n", | |
1507 | mac_len); | |
1508 | return -EINVAL; | |
1509 | } | |
d7fbeba6 | 1510 | |
f148f61d | 1511 | mcastFilterSize_p = (unsigned int *)vio_get_attribute(dev, |
493a684a | 1512 | VETH_MCAST_FILTER_SIZE, NULL); |
f148f61d | 1513 | if (!mcastFilterSize_p) { |
21c2dece SL |
1514 | dev_err(&dev->dev, "Can't find VETH_MCAST_FILTER_SIZE " |
1515 | "attribute\n"); | |
be35ae9e | 1516 | return -EINVAL; |
1da177e4 | 1517 | } |
d7fbeba6 | 1518 | |
1da177e4 LT |
1519 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
1520 | ||
f148f61d | 1521 | if (!netdev) |
1da177e4 LT |
1522 | return -ENOMEM; |
1523 | ||
4cf1653a | 1524 | adapter = netdev_priv(netdev); |
c7ae011d | 1525 | dev_set_drvdata(&dev->dev, netdev); |
1da177e4 LT |
1526 | |
1527 | adapter->vdev = dev; | |
1528 | adapter->netdev = netdev; | |
f148f61d | 1529 | adapter->mcastFilterSize = *mcastFilterSize_p; |
860f242e | 1530 | adapter->pool_config = 0; |
d7fbeba6 | 1531 | |
bea3348e SH |
1532 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
1533 | ||
1da177e4 | 1534 | netdev->irq = dev->irq; |
e186d174 AB |
1535 | netdev->netdev_ops = &ibmveth_netdev_ops; |
1536 | netdev->ethtool_ops = &netdev_ethtool_ops; | |
1da177e4 | 1537 | SET_NETDEV_DEV(netdev, &dev->dev); |
b9367bf3 MM |
1538 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
1539 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; | |
07e6a97d | 1540 | |
b9367bf3 | 1541 | netdev->features |= netdev->hw_features; |
1da177e4 | 1542 | |
07e6a97d TF |
1543 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr); |
1544 | ||
1545 | /* If running older firmware, TSO should not be enabled by default */ | |
1546 | if (ret == H_SUCCESS && (ret_attr & IBMVETH_ILLAN_LRG_SND_SUPPORT) && | |
1547 | !old_large_send) { | |
1548 | netdev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; | |
1549 | netdev->features |= netdev->hw_features; | |
1550 | } else { | |
1551 | netdev->hw_features |= NETIF_F_TSO; | |
1552 | } | |
8641dd85 | 1553 | |
d746ca95 | 1554 | memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN); |
1da177e4 | 1555 | |
cd7c7ec3 TF |
1556 | if (firmware_has_feature(FW_FEATURE_CMO)) |
1557 | memcpy(pool_count, pool_count_cmo, sizeof(pool_count)); | |
1558 | ||
f148f61d | 1559 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
860f242e | 1560 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; |
8dde2a96 GKH |
1561 | int error; |
1562 | ||
d7fbeba6 JG |
1563 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
1564 | pool_count[i], pool_size[i], | |
860f242e | 1565 | pool_active[i]); |
8dde2a96 GKH |
1566 | error = kobject_init_and_add(kobj, &ktype_veth_pool, |
1567 | &dev->dev.kobj, "pool%d", i); | |
1568 | if (!error) | |
1569 | kobject_uevent(kobj, KOBJ_ADD); | |
860f242e | 1570 | } |
1da177e4 | 1571 | |
c43ced18 | 1572 | netdev_dbg(netdev, "adapter @ 0x%p\n", adapter); |
1da177e4 | 1573 | |
1da177e4 LT |
1574 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
1575 | adapter->filter_list_dma = DMA_ERROR_CODE; | |
1576 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; | |
1577 | ||
c43ced18 | 1578 | netdev_dbg(netdev, "registering netdev...\n"); |
1da177e4 | 1579 | |
b801a4e7 MM |
1580 | ibmveth_set_features(netdev, netdev->features); |
1581 | ||
1da177e4 LT |
1582 | rc = register_netdev(netdev); |
1583 | ||
f148f61d | 1584 | if (rc) { |
c43ced18 | 1585 | netdev_dbg(netdev, "failed to register netdev rc=%d\n", rc); |
1da177e4 LT |
1586 | free_netdev(netdev); |
1587 | return rc; | |
1588 | } | |
1589 | ||
c43ced18 | 1590 | netdev_dbg(netdev, "registered\n"); |
1da177e4 | 1591 | |
1da177e4 LT |
1592 | return 0; |
1593 | } | |
1594 | ||
e11787a2 | 1595 | static int ibmveth_remove(struct vio_dev *dev) |
1da177e4 | 1596 | { |
c7ae011d | 1597 | struct net_device *netdev = dev_get_drvdata(&dev->dev); |
4cf1653a | 1598 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1599 | int i; |
1600 | ||
f148f61d | 1601 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) |
c10997f6 | 1602 | kobject_put(&adapter->rx_buff_pool[i].kobj); |
1da177e4 LT |
1603 | |
1604 | unregister_netdev(netdev); | |
1605 | ||
1da177e4 | 1606 | free_netdev(netdev); |
1096d63d RJ |
1607 | dev_set_drvdata(&dev->dev, NULL); |
1608 | ||
1da177e4 LT |
1609 | return 0; |
1610 | } | |
1611 | ||
860f242e SL |
1612 | static struct attribute veth_active_attr; |
1613 | static struct attribute veth_num_attr; | |
1614 | static struct attribute veth_size_attr; | |
1615 | ||
f148f61d SL |
1616 | static ssize_t veth_pool_show(struct kobject *kobj, |
1617 | struct attribute *attr, char *buf) | |
860f242e | 1618 | { |
d7fbeba6 | 1619 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1620 | struct ibmveth_buff_pool, |
1621 | kobj); | |
1622 | ||
1623 | if (attr == &veth_active_attr) | |
1624 | return sprintf(buf, "%d\n", pool->active); | |
1625 | else if (attr == &veth_num_attr) | |
1626 | return sprintf(buf, "%d\n", pool->size); | |
1627 | else if (attr == &veth_size_attr) | |
1628 | return sprintf(buf, "%d\n", pool->buff_size); | |
1629 | return 0; | |
1630 | } | |
1631 | ||
f148f61d SL |
1632 | static ssize_t veth_pool_store(struct kobject *kobj, struct attribute *attr, |
1633 | const char *buf, size_t count) | |
860f242e | 1634 | { |
d7fbeba6 | 1635 | struct ibmveth_buff_pool *pool = container_of(kobj, |
860f242e SL |
1636 | struct ibmveth_buff_pool, |
1637 | kobj); | |
c7ae011d GKH |
1638 | struct net_device *netdev = dev_get_drvdata( |
1639 | container_of(kobj->parent, struct device, kobj)); | |
4cf1653a | 1640 | struct ibmveth_adapter *adapter = netdev_priv(netdev); |
860f242e SL |
1641 | long value = simple_strtol(buf, NULL, 10); |
1642 | long rc; | |
1643 | ||
1644 | if (attr == &veth_active_attr) { | |
1645 | if (value && !pool->active) { | |
4aa9c93e | 1646 | if (netif_running(netdev)) { |
f148f61d | 1647 | if (ibmveth_alloc_buffer_pool(pool)) { |
21c2dece SL |
1648 | netdev_err(netdev, |
1649 | "unable to alloc pool\n"); | |
4aa9c93e BK |
1650 | return -ENOMEM; |
1651 | } | |
1652 | pool->active = 1; | |
1653 | adapter->pool_config = 1; | |
1654 | ibmveth_close(netdev); | |
1655 | adapter->pool_config = 0; | |
1656 | if ((rc = ibmveth_open(netdev))) | |
1657 | return rc; | |
f148f61d | 1658 | } else { |
4aa9c93e | 1659 | pool->active = 1; |
f148f61d | 1660 | } |
860f242e SL |
1661 | } else if (!value && pool->active) { |
1662 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; | |
1663 | int i; | |
1664 | /* Make sure there is a buffer pool with buffers that | |
1665 | can hold a packet of the size of the MTU */ | |
517e80e6 | 1666 | for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) { |
860f242e SL |
1667 | if (pool == &adapter->rx_buff_pool[i]) |
1668 | continue; | |
1669 | if (!adapter->rx_buff_pool[i].active) | |
1670 | continue; | |
76b9cfcc BK |
1671 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
1672 | break; | |
860f242e | 1673 | } |
76b9cfcc | 1674 | |
517e80e6 | 1675 | if (i == IBMVETH_NUM_BUFF_POOLS) { |
21c2dece | 1676 | netdev_err(netdev, "no active pool >= MTU\n"); |
860f242e SL |
1677 | return -EPERM; |
1678 | } | |
76b9cfcc | 1679 | |
76b9cfcc BK |
1680 | if (netif_running(netdev)) { |
1681 | adapter->pool_config = 1; | |
1682 | ibmveth_close(netdev); | |
ea866e65 | 1683 | pool->active = 0; |
76b9cfcc BK |
1684 | adapter->pool_config = 0; |
1685 | if ((rc = ibmveth_open(netdev))) | |
1686 | return rc; | |
1687 | } | |
ea866e65 | 1688 | pool->active = 0; |
860f242e SL |
1689 | } |
1690 | } else if (attr == &veth_num_attr) { | |
f148f61d | 1691 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) { |
860f242e | 1692 | return -EINVAL; |
f148f61d | 1693 | } else { |
4aa9c93e BK |
1694 | if (netif_running(netdev)) { |
1695 | adapter->pool_config = 1; | |
1696 | ibmveth_close(netdev); | |
1697 | adapter->pool_config = 0; | |
1698 | pool->size = value; | |
1699 | if ((rc = ibmveth_open(netdev))) | |
1700 | return rc; | |
f148f61d | 1701 | } else { |
4aa9c93e | 1702 | pool->size = value; |
f148f61d | 1703 | } |
860f242e SL |
1704 | } |
1705 | } else if (attr == &veth_size_attr) { | |
f148f61d | 1706 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) { |
860f242e | 1707 | return -EINVAL; |
f148f61d | 1708 | } else { |
4aa9c93e BK |
1709 | if (netif_running(netdev)) { |
1710 | adapter->pool_config = 1; | |
1711 | ibmveth_close(netdev); | |
1712 | adapter->pool_config = 0; | |
1713 | pool->buff_size = value; | |
1714 | if ((rc = ibmveth_open(netdev))) | |
1715 | return rc; | |
f148f61d | 1716 | } else { |
4aa9c93e | 1717 | pool->buff_size = value; |
f148f61d | 1718 | } |
860f242e SL |
1719 | } |
1720 | } | |
1721 | ||
1722 | /* kick the interrupt handler to allocate/deallocate pools */ | |
7d12e780 | 1723 | ibmveth_interrupt(netdev->irq, netdev); |
860f242e SL |
1724 | return count; |
1725 | } | |
1726 | ||
1727 | ||
f148f61d SL |
1728 | #define ATTR(_name, _mode) \ |
1729 | struct attribute veth_##_name##_attr = { \ | |
1730 | .name = __stringify(_name), .mode = _mode, \ | |
1731 | }; | |
860f242e SL |
1732 | |
1733 | static ATTR(active, 0644); | |
1734 | static ATTR(num, 0644); | |
1735 | static ATTR(size, 0644); | |
1736 | ||
f148f61d | 1737 | static struct attribute *veth_pool_attrs[] = { |
860f242e SL |
1738 | &veth_active_attr, |
1739 | &veth_num_attr, | |
1740 | &veth_size_attr, | |
1741 | NULL, | |
1742 | }; | |
1743 | ||
52cf25d0 | 1744 | static const struct sysfs_ops veth_pool_ops = { |
860f242e SL |
1745 | .show = veth_pool_show, |
1746 | .store = veth_pool_store, | |
1747 | }; | |
1748 | ||
1749 | static struct kobj_type ktype_veth_pool = { | |
1750 | .release = NULL, | |
1751 | .sysfs_ops = &veth_pool_ops, | |
1752 | .default_attrs = veth_pool_attrs, | |
1753 | }; | |
1754 | ||
e7a3af5d BK |
1755 | static int ibmveth_resume(struct device *dev) |
1756 | { | |
1757 | struct net_device *netdev = dev_get_drvdata(dev); | |
1758 | ibmveth_interrupt(netdev->irq, netdev); | |
1759 | return 0; | |
1760 | } | |
860f242e | 1761 | |
e11787a2 | 1762 | static struct vio_device_id ibmveth_device_table[] = { |
1da177e4 | 1763 | { "network", "IBM,l-lan"}, |
fb120da6 | 1764 | { "", "" } |
1da177e4 | 1765 | }; |
1da177e4 LT |
1766 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
1767 | ||
e7a3af5d BK |
1768 | static struct dev_pm_ops ibmveth_pm_ops = { |
1769 | .resume = ibmveth_resume | |
1770 | }; | |
1771 | ||
1da177e4 | 1772 | static struct vio_driver ibmveth_driver = { |
6fdf5392 SR |
1773 | .id_table = ibmveth_device_table, |
1774 | .probe = ibmveth_probe, | |
1775 | .remove = ibmveth_remove, | |
1096d63d | 1776 | .get_desired_dma = ibmveth_get_desired_dma, |
cb52d897 BH |
1777 | .name = ibmveth_driver_name, |
1778 | .pm = &ibmveth_pm_ops, | |
1da177e4 LT |
1779 | }; |
1780 | ||
1781 | static int __init ibmveth_module_init(void) | |
1782 | { | |
21c2dece SL |
1783 | printk(KERN_DEBUG "%s: %s %s\n", ibmveth_driver_name, |
1784 | ibmveth_driver_string, ibmveth_driver_version); | |
1da177e4 | 1785 | |
1da177e4 LT |
1786 | return vio_register_driver(&ibmveth_driver); |
1787 | } | |
1788 | ||
1789 | static void __exit ibmveth_module_exit(void) | |
1790 | { | |
1791 | vio_unregister_driver(&ibmveth_driver); | |
d7fbeba6 | 1792 | } |
1da177e4 LT |
1793 | |
1794 | module_init(ibmveth_module_init); | |
1795 | module_exit(ibmveth_module_exit); |