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01f2e4ea | 1 | /* |
29046f9b | 2 | * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. |
01f2e4ea SF |
3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
4 | * | |
5 | * This program is free software; you may redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
16 | * SOFTWARE. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/init.h> | |
a6b7a407 | 26 | #include <linux/interrupt.h> |
01f2e4ea SF |
27 | #include <linux/workqueue.h> |
28 | #include <linux/pci.h> | |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/etherdevice.h> | |
31 | #include <linux/if_ether.h> | |
32 | #include <linux/if_vlan.h> | |
33 | #include <linux/ethtool.h> | |
34 | #include <linux/in.h> | |
35 | #include <linux/ip.h> | |
36 | #include <linux/ipv6.h> | |
37 | #include <linux/tcp.h> | |
29046f9b | 38 | #include <linux/rtnetlink.h> |
70c71606 | 39 | #include <linux/prefetch.h> |
b7c6bfb7 | 40 | #include <net/ip6_checksum.h> |
01f2e4ea SF |
41 | |
42 | #include "cq_enet_desc.h" | |
43 | #include "vnic_dev.h" | |
44 | #include "vnic_intr.h" | |
45 | #include "vnic_stats.h" | |
f8bd9091 | 46 | #include "vnic_vic.h" |
01f2e4ea SF |
47 | #include "enic_res.h" |
48 | #include "enic.h" | |
51987461 | 49 | #include "enic_dev.h" |
b3abfbd2 | 50 | #include "enic_pp.h" |
01f2e4ea SF |
51 | |
52 | #define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) | |
ea0d7d91 SF |
53 | #define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) |
54 | #define MAX_TSO (1 << 16) | |
55 | #define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) | |
56 | ||
57 | #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ | |
f8bd9091 | 58 | #define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ |
01f2e4ea SF |
59 | |
60 | /* Supported devices */ | |
a3aa1884 | 61 | static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { |
ea0d7d91 | 62 | { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, |
f8bd9091 | 63 | { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, |
01f2e4ea SF |
64 | { 0, } /* end of table */ |
65 | }; | |
66 | ||
67 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
68 | MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>"); | |
69 | MODULE_LICENSE("GPL"); | |
70 | MODULE_VERSION(DRV_VERSION); | |
71 | MODULE_DEVICE_TABLE(pci, enic_id_table); | |
72 | ||
73 | struct enic_stat { | |
74 | char name[ETH_GSTRING_LEN]; | |
75 | unsigned int offset; | |
76 | }; | |
77 | ||
78 | #define ENIC_TX_STAT(stat) \ | |
79 | { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 } | |
80 | #define ENIC_RX_STAT(stat) \ | |
81 | { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 } | |
82 | ||
83 | static const struct enic_stat enic_tx_stats[] = { | |
84 | ENIC_TX_STAT(tx_frames_ok), | |
85 | ENIC_TX_STAT(tx_unicast_frames_ok), | |
86 | ENIC_TX_STAT(tx_multicast_frames_ok), | |
87 | ENIC_TX_STAT(tx_broadcast_frames_ok), | |
88 | ENIC_TX_STAT(tx_bytes_ok), | |
89 | ENIC_TX_STAT(tx_unicast_bytes_ok), | |
90 | ENIC_TX_STAT(tx_multicast_bytes_ok), | |
91 | ENIC_TX_STAT(tx_broadcast_bytes_ok), | |
92 | ENIC_TX_STAT(tx_drops), | |
93 | ENIC_TX_STAT(tx_errors), | |
94 | ENIC_TX_STAT(tx_tso), | |
95 | }; | |
96 | ||
97 | static const struct enic_stat enic_rx_stats[] = { | |
98 | ENIC_RX_STAT(rx_frames_ok), | |
99 | ENIC_RX_STAT(rx_frames_total), | |
100 | ENIC_RX_STAT(rx_unicast_frames_ok), | |
101 | ENIC_RX_STAT(rx_multicast_frames_ok), | |
102 | ENIC_RX_STAT(rx_broadcast_frames_ok), | |
103 | ENIC_RX_STAT(rx_bytes_ok), | |
104 | ENIC_RX_STAT(rx_unicast_bytes_ok), | |
105 | ENIC_RX_STAT(rx_multicast_bytes_ok), | |
106 | ENIC_RX_STAT(rx_broadcast_bytes_ok), | |
107 | ENIC_RX_STAT(rx_drop), | |
108 | ENIC_RX_STAT(rx_no_bufs), | |
109 | ENIC_RX_STAT(rx_errors), | |
110 | ENIC_RX_STAT(rx_rss), | |
111 | ENIC_RX_STAT(rx_crc_errors), | |
112 | ENIC_RX_STAT(rx_frames_64), | |
113 | ENIC_RX_STAT(rx_frames_127), | |
114 | ENIC_RX_STAT(rx_frames_255), | |
115 | ENIC_RX_STAT(rx_frames_511), | |
116 | ENIC_RX_STAT(rx_frames_1023), | |
117 | ENIC_RX_STAT(rx_frames_1518), | |
118 | ENIC_RX_STAT(rx_frames_to_max), | |
119 | }; | |
120 | ||
121 | static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats); | |
122 | static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats); | |
123 | ||
f8bd9091 SF |
124 | static int enic_is_dynamic(struct enic *enic) |
125 | { | |
126 | return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; | |
127 | } | |
128 | ||
717258ba VK |
129 | static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) |
130 | { | |
131 | return rq; | |
132 | } | |
133 | ||
134 | static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) | |
135 | { | |
136 | return enic->rq_count + wq; | |
137 | } | |
138 | ||
139 | static inline unsigned int enic_legacy_io_intr(void) | |
140 | { | |
141 | return 0; | |
142 | } | |
143 | ||
144 | static inline unsigned int enic_legacy_err_intr(void) | |
145 | { | |
146 | return 1; | |
147 | } | |
148 | ||
149 | static inline unsigned int enic_legacy_notify_intr(void) | |
150 | { | |
151 | return 2; | |
152 | } | |
153 | ||
154 | static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) | |
155 | { | |
7d260ec2 | 156 | return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; |
717258ba VK |
157 | } |
158 | ||
159 | static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) | |
160 | { | |
7d260ec2 | 161 | return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; |
717258ba VK |
162 | } |
163 | ||
164 | static inline unsigned int enic_msix_err_intr(struct enic *enic) | |
165 | { | |
166 | return enic->rq_count + enic->wq_count; | |
167 | } | |
168 | ||
169 | static inline unsigned int enic_msix_notify_intr(struct enic *enic) | |
170 | { | |
171 | return enic->rq_count + enic->wq_count + 1; | |
172 | } | |
173 | ||
01f2e4ea SF |
174 | static int enic_get_settings(struct net_device *netdev, |
175 | struct ethtool_cmd *ecmd) | |
176 | { | |
177 | struct enic *enic = netdev_priv(netdev); | |
178 | ||
179 | ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); | |
180 | ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE); | |
181 | ecmd->port = PORT_FIBRE; | |
182 | ecmd->transceiver = XCVR_EXTERNAL; | |
183 | ||
184 | if (netif_carrier_ok(netdev)) { | |
70739497 | 185 | ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev)); |
01f2e4ea SF |
186 | ecmd->duplex = DUPLEX_FULL; |
187 | } else { | |
70739497 | 188 | ethtool_cmd_speed_set(ecmd, -1); |
01f2e4ea SF |
189 | ecmd->duplex = -1; |
190 | } | |
191 | ||
192 | ecmd->autoneg = AUTONEG_DISABLE; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static void enic_get_drvinfo(struct net_device *netdev, | |
198 | struct ethtool_drvinfo *drvinfo) | |
199 | { | |
200 | struct enic *enic = netdev_priv(netdev); | |
201 | struct vnic_devcmd_fw_info *fw_info; | |
202 | ||
383ab92f | 203 | enic_dev_fw_info(enic, &fw_info); |
01f2e4ea SF |
204 | |
205 | strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); | |
206 | strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); | |
207 | strncpy(drvinfo->fw_version, fw_info->fw_version, | |
208 | sizeof(drvinfo->fw_version)); | |
209 | strncpy(drvinfo->bus_info, pci_name(enic->pdev), | |
210 | sizeof(drvinfo->bus_info)); | |
211 | } | |
212 | ||
213 | static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data) | |
214 | { | |
215 | unsigned int i; | |
216 | ||
217 | switch (stringset) { | |
218 | case ETH_SS_STATS: | |
219 | for (i = 0; i < enic_n_tx_stats; i++) { | |
220 | memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN); | |
221 | data += ETH_GSTRING_LEN; | |
222 | } | |
223 | for (i = 0; i < enic_n_rx_stats; i++) { | |
224 | memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN); | |
225 | data += ETH_GSTRING_LEN; | |
226 | } | |
227 | break; | |
228 | } | |
229 | } | |
230 | ||
25f0a061 | 231 | static int enic_get_sset_count(struct net_device *netdev, int sset) |
01f2e4ea | 232 | { |
25f0a061 SF |
233 | switch (sset) { |
234 | case ETH_SS_STATS: | |
235 | return enic_n_tx_stats + enic_n_rx_stats; | |
236 | default: | |
237 | return -EOPNOTSUPP; | |
238 | } | |
01f2e4ea SF |
239 | } |
240 | ||
241 | static void enic_get_ethtool_stats(struct net_device *netdev, | |
242 | struct ethtool_stats *stats, u64 *data) | |
243 | { | |
244 | struct enic *enic = netdev_priv(netdev); | |
245 | struct vnic_stats *vstats; | |
246 | unsigned int i; | |
247 | ||
383ab92f | 248 | enic_dev_stats_dump(enic, &vstats); |
01f2e4ea SF |
249 | |
250 | for (i = 0; i < enic_n_tx_stats; i++) | |
251 | *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset]; | |
252 | for (i = 0; i < enic_n_rx_stats; i++) | |
253 | *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset]; | |
254 | } | |
255 | ||
01f2e4ea SF |
256 | static u32 enic_get_msglevel(struct net_device *netdev) |
257 | { | |
258 | struct enic *enic = netdev_priv(netdev); | |
259 | return enic->msg_enable; | |
260 | } | |
261 | ||
262 | static void enic_set_msglevel(struct net_device *netdev, u32 value) | |
263 | { | |
264 | struct enic *enic = netdev_priv(netdev); | |
265 | enic->msg_enable = value; | |
266 | } | |
267 | ||
7c844599 SF |
268 | static int enic_get_coalesce(struct net_device *netdev, |
269 | struct ethtool_coalesce *ecmd) | |
270 | { | |
271 | struct enic *enic = netdev_priv(netdev); | |
272 | ||
273 | ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs; | |
274 | ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs; | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int enic_set_coalesce(struct net_device *netdev, | |
280 | struct ethtool_coalesce *ecmd) | |
281 | { | |
282 | struct enic *enic = netdev_priv(netdev); | |
283 | u32 tx_coalesce_usecs; | |
284 | u32 rx_coalesce_usecs; | |
717258ba | 285 | unsigned int i, intr; |
7c844599 SF |
286 | |
287 | tx_coalesce_usecs = min_t(u32, | |
288 | INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX), | |
289 | ecmd->tx_coalesce_usecs); | |
290 | rx_coalesce_usecs = min_t(u32, | |
291 | INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX), | |
292 | ecmd->rx_coalesce_usecs); | |
293 | ||
294 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
295 | case VNIC_DEV_INTR_MODE_INTX: | |
296 | if (tx_coalesce_usecs != rx_coalesce_usecs) | |
297 | return -EINVAL; | |
298 | ||
717258ba VK |
299 | intr = enic_legacy_io_intr(); |
300 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
7c844599 SF |
301 | INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs)); |
302 | break; | |
303 | case VNIC_DEV_INTR_MODE_MSI: | |
304 | if (tx_coalesce_usecs != rx_coalesce_usecs) | |
305 | return -EINVAL; | |
306 | ||
307 | vnic_intr_coalescing_timer_set(&enic->intr[0], | |
308 | INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs)); | |
309 | break; | |
310 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
311 | for (i = 0; i < enic->wq_count; i++) { |
312 | intr = enic_msix_wq_intr(enic, i); | |
313 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
314 | INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs)); | |
315 | } | |
316 | ||
317 | for (i = 0; i < enic->rq_count; i++) { | |
318 | intr = enic_msix_rq_intr(enic, i); | |
319 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
320 | INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs)); | |
321 | } | |
322 | ||
7c844599 SF |
323 | break; |
324 | default: | |
325 | break; | |
326 | } | |
327 | ||
328 | enic->tx_coalesce_usecs = tx_coalesce_usecs; | |
329 | enic->rx_coalesce_usecs = rx_coalesce_usecs; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
0fc0b732 | 334 | static const struct ethtool_ops enic_ethtool_ops = { |
01f2e4ea SF |
335 | .get_settings = enic_get_settings, |
336 | .get_drvinfo = enic_get_drvinfo, | |
337 | .get_msglevel = enic_get_msglevel, | |
338 | .set_msglevel = enic_set_msglevel, | |
339 | .get_link = ethtool_op_get_link, | |
340 | .get_strings = enic_get_strings, | |
25f0a061 | 341 | .get_sset_count = enic_get_sset_count, |
01f2e4ea | 342 | .get_ethtool_stats = enic_get_ethtool_stats, |
7c844599 SF |
343 | .get_coalesce = enic_get_coalesce, |
344 | .set_coalesce = enic_set_coalesce, | |
01f2e4ea SF |
345 | }; |
346 | ||
347 | static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) | |
348 | { | |
349 | struct enic *enic = vnic_dev_priv(wq->vdev); | |
350 | ||
351 | if (buf->sop) | |
352 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
353 | buf->len, PCI_DMA_TODEVICE); | |
354 | else | |
355 | pci_unmap_page(enic->pdev, buf->dma_addr, | |
356 | buf->len, PCI_DMA_TODEVICE); | |
357 | ||
358 | if (buf->os_buf) | |
359 | dev_kfree_skb_any(buf->os_buf); | |
360 | } | |
361 | ||
362 | static void enic_wq_free_buf(struct vnic_wq *wq, | |
363 | struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) | |
364 | { | |
365 | enic_free_wq_buf(wq, buf); | |
366 | } | |
367 | ||
368 | static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, | |
369 | u8 type, u16 q_number, u16 completed_index, void *opaque) | |
370 | { | |
371 | struct enic *enic = vnic_dev_priv(vdev); | |
372 | ||
373 | spin_lock(&enic->wq_lock[q_number]); | |
374 | ||
375 | vnic_wq_service(&enic->wq[q_number], cq_desc, | |
376 | completed_index, enic_wq_free_buf, | |
377 | opaque); | |
378 | ||
379 | if (netif_queue_stopped(enic->netdev) && | |
ea0d7d91 SF |
380 | vnic_wq_desc_avail(&enic->wq[q_number]) >= |
381 | (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) | |
01f2e4ea SF |
382 | netif_wake_queue(enic->netdev); |
383 | ||
384 | spin_unlock(&enic->wq_lock[q_number]); | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | static void enic_log_q_error(struct enic *enic) | |
390 | { | |
391 | unsigned int i; | |
392 | u32 error_status; | |
393 | ||
394 | for (i = 0; i < enic->wq_count; i++) { | |
395 | error_status = vnic_wq_error_status(&enic->wq[i]); | |
396 | if (error_status) | |
a7a79deb VK |
397 | netdev_err(enic->netdev, "WQ[%d] error_status %d\n", |
398 | i, error_status); | |
01f2e4ea SF |
399 | } |
400 | ||
401 | for (i = 0; i < enic->rq_count; i++) { | |
402 | error_status = vnic_rq_error_status(&enic->rq[i]); | |
403 | if (error_status) | |
a7a79deb VK |
404 | netdev_err(enic->netdev, "RQ[%d] error_status %d\n", |
405 | i, error_status); | |
01f2e4ea SF |
406 | } |
407 | } | |
408 | ||
383ab92f | 409 | static void enic_msglvl_check(struct enic *enic) |
01f2e4ea | 410 | { |
383ab92f | 411 | u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); |
01f2e4ea | 412 | |
383ab92f | 413 | if (msg_enable != enic->msg_enable) { |
a7a79deb VK |
414 | netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", |
415 | enic->msg_enable, msg_enable); | |
383ab92f | 416 | enic->msg_enable = msg_enable; |
01f2e4ea SF |
417 | } |
418 | } | |
419 | ||
420 | static void enic_mtu_check(struct enic *enic) | |
421 | { | |
422 | u32 mtu = vnic_dev_mtu(enic->vdev); | |
a7a79deb | 423 | struct net_device *netdev = enic->netdev; |
01f2e4ea | 424 | |
491598a4 | 425 | if (mtu && mtu != enic->port_mtu) { |
7c844599 | 426 | enic->port_mtu = mtu; |
c97c894d RP |
427 | if (enic_is_dynamic(enic)) { |
428 | mtu = max_t(int, ENIC_MIN_MTU, | |
429 | min_t(int, ENIC_MAX_MTU, mtu)); | |
430 | if (mtu != netdev->mtu) | |
431 | schedule_work(&enic->change_mtu_work); | |
432 | } else { | |
433 | if (mtu < netdev->mtu) | |
434 | netdev_warn(netdev, | |
435 | "interface MTU (%d) set higher " | |
436 | "than switch port MTU (%d)\n", | |
437 | netdev->mtu, mtu); | |
438 | } | |
01f2e4ea SF |
439 | } |
440 | } | |
441 | ||
383ab92f | 442 | static void enic_link_check(struct enic *enic) |
01f2e4ea | 443 | { |
383ab92f VK |
444 | int link_status = vnic_dev_link_status(enic->vdev); |
445 | int carrier_ok = netif_carrier_ok(enic->netdev); | |
01f2e4ea | 446 | |
383ab92f | 447 | if (link_status && !carrier_ok) { |
a7a79deb | 448 | netdev_info(enic->netdev, "Link UP\n"); |
383ab92f VK |
449 | netif_carrier_on(enic->netdev); |
450 | } else if (!link_status && carrier_ok) { | |
a7a79deb | 451 | netdev_info(enic->netdev, "Link DOWN\n"); |
383ab92f | 452 | netif_carrier_off(enic->netdev); |
01f2e4ea SF |
453 | } |
454 | } | |
455 | ||
456 | static void enic_notify_check(struct enic *enic) | |
457 | { | |
458 | enic_msglvl_check(enic); | |
459 | enic_mtu_check(enic); | |
460 | enic_link_check(enic); | |
461 | } | |
462 | ||
463 | #define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) | |
464 | ||
465 | static irqreturn_t enic_isr_legacy(int irq, void *data) | |
466 | { | |
467 | struct net_device *netdev = data; | |
468 | struct enic *enic = netdev_priv(netdev); | |
717258ba VK |
469 | unsigned int io_intr = enic_legacy_io_intr(); |
470 | unsigned int err_intr = enic_legacy_err_intr(); | |
471 | unsigned int notify_intr = enic_legacy_notify_intr(); | |
01f2e4ea SF |
472 | u32 pba; |
473 | ||
717258ba | 474 | vnic_intr_mask(&enic->intr[io_intr]); |
01f2e4ea SF |
475 | |
476 | pba = vnic_intr_legacy_pba(enic->legacy_pba); | |
477 | if (!pba) { | |
717258ba | 478 | vnic_intr_unmask(&enic->intr[io_intr]); |
01f2e4ea SF |
479 | return IRQ_NONE; /* not our interrupt */ |
480 | } | |
481 | ||
717258ba VK |
482 | if (ENIC_TEST_INTR(pba, notify_intr)) { |
483 | vnic_intr_return_all_credits(&enic->intr[notify_intr]); | |
01f2e4ea | 484 | enic_notify_check(enic); |
ed8af6b2 | 485 | } |
01f2e4ea | 486 | |
717258ba VK |
487 | if (ENIC_TEST_INTR(pba, err_intr)) { |
488 | vnic_intr_return_all_credits(&enic->intr[err_intr]); | |
01f2e4ea SF |
489 | enic_log_q_error(enic); |
490 | /* schedule recovery from WQ/RQ error */ | |
491 | schedule_work(&enic->reset); | |
492 | return IRQ_HANDLED; | |
493 | } | |
494 | ||
717258ba VK |
495 | if (ENIC_TEST_INTR(pba, io_intr)) { |
496 | if (napi_schedule_prep(&enic->napi[0])) | |
497 | __napi_schedule(&enic->napi[0]); | |
01f2e4ea | 498 | } else { |
717258ba | 499 | vnic_intr_unmask(&enic->intr[io_intr]); |
01f2e4ea SF |
500 | } |
501 | ||
502 | return IRQ_HANDLED; | |
503 | } | |
504 | ||
505 | static irqreturn_t enic_isr_msi(int irq, void *data) | |
506 | { | |
507 | struct enic *enic = data; | |
508 | ||
509 | /* With MSI, there is no sharing of interrupts, so this is | |
510 | * our interrupt and there is no need to ack it. The device | |
511 | * is not providing per-vector masking, so the OS will not | |
512 | * write to PCI config space to mask/unmask the interrupt. | |
513 | * We're using mask_on_assertion for MSI, so the device | |
514 | * automatically masks the interrupt when the interrupt is | |
515 | * generated. Later, when exiting polling, the interrupt | |
516 | * will be unmasked (see enic_poll). | |
517 | * | |
518 | * Also, the device uses the same PCIe Traffic Class (TC) | |
519 | * for Memory Write data and MSI, so there are no ordering | |
520 | * issues; the MSI will always arrive at the Root Complex | |
521 | * _after_ corresponding Memory Writes (i.e. descriptor | |
522 | * writes). | |
523 | */ | |
524 | ||
717258ba | 525 | napi_schedule(&enic->napi[0]); |
01f2e4ea SF |
526 | |
527 | return IRQ_HANDLED; | |
528 | } | |
529 | ||
530 | static irqreturn_t enic_isr_msix_rq(int irq, void *data) | |
531 | { | |
717258ba | 532 | struct napi_struct *napi = data; |
01f2e4ea SF |
533 | |
534 | /* schedule NAPI polling for RQ cleanup */ | |
717258ba | 535 | napi_schedule(napi); |
01f2e4ea SF |
536 | |
537 | return IRQ_HANDLED; | |
538 | } | |
539 | ||
540 | static irqreturn_t enic_isr_msix_wq(int irq, void *data) | |
541 | { | |
542 | struct enic *enic = data; | |
717258ba VK |
543 | unsigned int cq = enic_cq_wq(enic, 0); |
544 | unsigned int intr = enic_msix_wq_intr(enic, 0); | |
01f2e4ea SF |
545 | unsigned int wq_work_to_do = -1; /* no limit */ |
546 | unsigned int wq_work_done; | |
547 | ||
717258ba | 548 | wq_work_done = vnic_cq_service(&enic->cq[cq], |
01f2e4ea SF |
549 | wq_work_to_do, enic_wq_service, NULL); |
550 | ||
717258ba | 551 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
552 | wq_work_done, |
553 | 1 /* unmask intr */, | |
554 | 1 /* reset intr timer */); | |
555 | ||
556 | return IRQ_HANDLED; | |
557 | } | |
558 | ||
559 | static irqreturn_t enic_isr_msix_err(int irq, void *data) | |
560 | { | |
561 | struct enic *enic = data; | |
717258ba | 562 | unsigned int intr = enic_msix_err_intr(enic); |
01f2e4ea | 563 | |
717258ba | 564 | vnic_intr_return_all_credits(&enic->intr[intr]); |
ed8af6b2 | 565 | |
01f2e4ea SF |
566 | enic_log_q_error(enic); |
567 | ||
568 | /* schedule recovery from WQ/RQ error */ | |
569 | schedule_work(&enic->reset); | |
570 | ||
571 | return IRQ_HANDLED; | |
572 | } | |
573 | ||
574 | static irqreturn_t enic_isr_msix_notify(int irq, void *data) | |
575 | { | |
576 | struct enic *enic = data; | |
717258ba | 577 | unsigned int intr = enic_msix_notify_intr(enic); |
01f2e4ea | 578 | |
717258ba | 579 | vnic_intr_return_all_credits(&enic->intr[intr]); |
01f2e4ea | 580 | enic_notify_check(enic); |
01f2e4ea SF |
581 | |
582 | return IRQ_HANDLED; | |
583 | } | |
584 | ||
585 | static inline void enic_queue_wq_skb_cont(struct enic *enic, | |
586 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 587 | unsigned int len_left, int loopback) |
01f2e4ea SF |
588 | { |
589 | skb_frag_t *frag; | |
590 | ||
591 | /* Queue additional data fragments */ | |
592 | for (frag = skb_shinfo(skb)->frags; len_left; frag++) { | |
593 | len_left -= frag->size; | |
594 | enic_queue_wq_desc_cont(wq, skb, | |
595 | pci_map_page(enic->pdev, frag->page, | |
596 | frag->page_offset, frag->size, | |
597 | PCI_DMA_TODEVICE), | |
598 | frag->size, | |
1825aca6 VK |
599 | (len_left == 0), /* EOP? */ |
600 | loopback); | |
01f2e4ea SF |
601 | } |
602 | } | |
603 | ||
604 | static inline void enic_queue_wq_skb_vlan(struct enic *enic, | |
605 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 606 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea SF |
607 | { |
608 | unsigned int head_len = skb_headlen(skb); | |
609 | unsigned int len_left = skb->len - head_len; | |
610 | int eop = (len_left == 0); | |
611 | ||
ea0d7d91 SF |
612 | /* Queue the main skb fragment. The fragments are no larger |
613 | * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less | |
614 | * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor | |
615 | * per fragment is queued. | |
616 | */ | |
01f2e4ea SF |
617 | enic_queue_wq_desc(wq, skb, |
618 | pci_map_single(enic->pdev, skb->data, | |
619 | head_len, PCI_DMA_TODEVICE), | |
620 | head_len, | |
621 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 622 | eop, loopback); |
01f2e4ea SF |
623 | |
624 | if (!eop) | |
1825aca6 | 625 | enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); |
01f2e4ea SF |
626 | } |
627 | ||
628 | static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, | |
629 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 630 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea SF |
631 | { |
632 | unsigned int head_len = skb_headlen(skb); | |
633 | unsigned int len_left = skb->len - head_len; | |
0d0b1672 | 634 | unsigned int hdr_len = skb_checksum_start_offset(skb); |
01f2e4ea SF |
635 | unsigned int csum_offset = hdr_len + skb->csum_offset; |
636 | int eop = (len_left == 0); | |
637 | ||
ea0d7d91 SF |
638 | /* Queue the main skb fragment. The fragments are no larger |
639 | * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less | |
640 | * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor | |
641 | * per fragment is queued. | |
642 | */ | |
01f2e4ea SF |
643 | enic_queue_wq_desc_csum_l4(wq, skb, |
644 | pci_map_single(enic->pdev, skb->data, | |
645 | head_len, PCI_DMA_TODEVICE), | |
646 | head_len, | |
647 | csum_offset, | |
648 | hdr_len, | |
649 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 650 | eop, loopback); |
01f2e4ea SF |
651 | |
652 | if (!eop) | |
1825aca6 | 653 | enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); |
01f2e4ea SF |
654 | } |
655 | ||
656 | static inline void enic_queue_wq_skb_tso(struct enic *enic, | |
657 | struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, | |
1825aca6 | 658 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea | 659 | { |
ea0d7d91 SF |
660 | unsigned int frag_len_left = skb_headlen(skb); |
661 | unsigned int len_left = skb->len - frag_len_left; | |
01f2e4ea SF |
662 | unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
663 | int eop = (len_left == 0); | |
ea0d7d91 SF |
664 | unsigned int len; |
665 | dma_addr_t dma_addr; | |
666 | unsigned int offset = 0; | |
667 | skb_frag_t *frag; | |
01f2e4ea SF |
668 | |
669 | /* Preload TCP csum field with IP pseudo hdr calculated | |
670 | * with IP length set to zero. HW will later add in length | |
671 | * to each TCP segment resulting from the TSO. | |
672 | */ | |
673 | ||
09640e63 | 674 | if (skb->protocol == cpu_to_be16(ETH_P_IP)) { |
01f2e4ea SF |
675 | ip_hdr(skb)->check = 0; |
676 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, | |
677 | ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); | |
09640e63 | 678 | } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { |
01f2e4ea SF |
679 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
680 | &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); | |
681 | } | |
682 | ||
ea0d7d91 SF |
683 | /* Queue WQ_ENET_MAX_DESC_LEN length descriptors |
684 | * for the main skb fragment | |
685 | */ | |
686 | while (frag_len_left) { | |
687 | len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); | |
688 | dma_addr = pci_map_single(enic->pdev, skb->data + offset, | |
689 | len, PCI_DMA_TODEVICE); | |
690 | enic_queue_wq_desc_tso(wq, skb, | |
691 | dma_addr, | |
692 | len, | |
693 | mss, hdr_len, | |
694 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 695 | eop && (len == frag_len_left), loopback); |
ea0d7d91 SF |
696 | frag_len_left -= len; |
697 | offset += len; | |
698 | } | |
01f2e4ea | 699 | |
ea0d7d91 SF |
700 | if (eop) |
701 | return; | |
702 | ||
703 | /* Queue WQ_ENET_MAX_DESC_LEN length descriptors | |
704 | * for additional data fragments | |
705 | */ | |
706 | for (frag = skb_shinfo(skb)->frags; len_left; frag++) { | |
707 | len_left -= frag->size; | |
708 | frag_len_left = frag->size; | |
709 | offset = frag->page_offset; | |
710 | ||
711 | while (frag_len_left) { | |
712 | len = min(frag_len_left, | |
713 | (unsigned int)WQ_ENET_MAX_DESC_LEN); | |
714 | dma_addr = pci_map_page(enic->pdev, frag->page, | |
715 | offset, len, | |
716 | PCI_DMA_TODEVICE); | |
717 | enic_queue_wq_desc_cont(wq, skb, | |
718 | dma_addr, | |
719 | len, | |
720 | (len_left == 0) && | |
1825aca6 VK |
721 | (len == frag_len_left), /* EOP? */ |
722 | loopback); | |
ea0d7d91 SF |
723 | frag_len_left -= len; |
724 | offset += len; | |
725 | } | |
726 | } | |
01f2e4ea SF |
727 | } |
728 | ||
729 | static inline void enic_queue_wq_skb(struct enic *enic, | |
730 | struct vnic_wq *wq, struct sk_buff *skb) | |
731 | { | |
732 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
733 | unsigned int vlan_tag = 0; | |
734 | int vlan_tag_insert = 0; | |
1825aca6 | 735 | int loopback = 0; |
01f2e4ea | 736 | |
eab6d18d | 737 | if (vlan_tx_tag_present(skb)) { |
01f2e4ea SF |
738 | /* VLAN tag from trunking driver */ |
739 | vlan_tag_insert = 1; | |
740 | vlan_tag = vlan_tx_tag_get(skb); | |
1825aca6 VK |
741 | } else if (enic->loop_enable) { |
742 | vlan_tag = enic->loop_tag; | |
743 | loopback = 1; | |
01f2e4ea SF |
744 | } |
745 | ||
746 | if (mss) | |
747 | enic_queue_wq_skb_tso(enic, wq, skb, mss, | |
1825aca6 | 748 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
749 | else if (skb->ip_summed == CHECKSUM_PARTIAL) |
750 | enic_queue_wq_skb_csum_l4(enic, wq, skb, | |
1825aca6 | 751 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
752 | else |
753 | enic_queue_wq_skb_vlan(enic, wq, skb, | |
1825aca6 | 754 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
755 | } |
756 | ||
ed8af6b2 | 757 | /* netif_tx_lock held, process context with BHs disabled, or BH */ |
61357325 | 758 | static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, |
d87fd25d | 759 | struct net_device *netdev) |
01f2e4ea SF |
760 | { |
761 | struct enic *enic = netdev_priv(netdev); | |
762 | struct vnic_wq *wq = &enic->wq[0]; | |
763 | unsigned long flags; | |
764 | ||
765 | if (skb->len <= 0) { | |
766 | dev_kfree_skb(skb); | |
767 | return NETDEV_TX_OK; | |
768 | } | |
769 | ||
770 | /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, | |
771 | * which is very likely. In the off chance it's going to take | |
772 | * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. | |
773 | */ | |
774 | ||
775 | if (skb_shinfo(skb)->gso_size == 0 && | |
776 | skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && | |
777 | skb_linearize(skb)) { | |
778 | dev_kfree_skb(skb); | |
779 | return NETDEV_TX_OK; | |
780 | } | |
781 | ||
782 | spin_lock_irqsave(&enic->wq_lock[0], flags); | |
783 | ||
ea0d7d91 SF |
784 | if (vnic_wq_desc_avail(wq) < |
785 | skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { | |
01f2e4ea SF |
786 | netif_stop_queue(netdev); |
787 | /* This is a hard error, log it */ | |
a7a79deb | 788 | netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); |
01f2e4ea SF |
789 | spin_unlock_irqrestore(&enic->wq_lock[0], flags); |
790 | return NETDEV_TX_BUSY; | |
791 | } | |
792 | ||
793 | enic_queue_wq_skb(enic, wq, skb); | |
794 | ||
ea0d7d91 | 795 | if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) |
01f2e4ea SF |
796 | netif_stop_queue(netdev); |
797 | ||
01f2e4ea SF |
798 | spin_unlock_irqrestore(&enic->wq_lock[0], flags); |
799 | ||
800 | return NETDEV_TX_OK; | |
801 | } | |
802 | ||
803 | /* dev_base_lock rwlock held, nominally process context */ | |
f20530bc | 804 | static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, |
805 | struct rtnl_link_stats64 *net_stats) | |
01f2e4ea SF |
806 | { |
807 | struct enic *enic = netdev_priv(netdev); | |
808 | struct vnic_stats *stats; | |
809 | ||
383ab92f | 810 | enic_dev_stats_dump(enic, &stats); |
01f2e4ea | 811 | |
25f0a061 SF |
812 | net_stats->tx_packets = stats->tx.tx_frames_ok; |
813 | net_stats->tx_bytes = stats->tx.tx_bytes_ok; | |
814 | net_stats->tx_errors = stats->tx.tx_errors; | |
815 | net_stats->tx_dropped = stats->tx.tx_drops; | |
01f2e4ea | 816 | |
25f0a061 SF |
817 | net_stats->rx_packets = stats->rx.rx_frames_ok; |
818 | net_stats->rx_bytes = stats->rx.rx_bytes_ok; | |
819 | net_stats->rx_errors = stats->rx.rx_errors; | |
820 | net_stats->multicast = stats->rx.rx_multicast_frames_ok; | |
350991e1 | 821 | net_stats->rx_over_errors = enic->rq_truncated_pkts; |
bd9fb1a4 | 822 | net_stats->rx_crc_errors = enic->rq_bad_fcs; |
350991e1 | 823 | net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; |
01f2e4ea | 824 | |
25f0a061 | 825 | return net_stats; |
01f2e4ea SF |
826 | } |
827 | ||
b3abfbd2 | 828 | void enic_reset_addr_lists(struct enic *enic) |
01f2e4ea SF |
829 | { |
830 | enic->mc_count = 0; | |
e0afe53f | 831 | enic->uc_count = 0; |
99ef5639 | 832 | enic->flags = 0; |
01f2e4ea SF |
833 | } |
834 | ||
835 | static int enic_set_mac_addr(struct net_device *netdev, char *addr) | |
836 | { | |
f8bd9091 SF |
837 | struct enic *enic = netdev_priv(netdev); |
838 | ||
839 | if (enic_is_dynamic(enic)) { | |
840 | if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) | |
841 | return -EADDRNOTAVAIL; | |
842 | } else { | |
843 | if (!is_valid_ether_addr(addr)) | |
844 | return -EADDRNOTAVAIL; | |
845 | } | |
01f2e4ea SF |
846 | |
847 | memcpy(netdev->dev_addr, addr, netdev->addr_len); | |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
f8bd9091 SF |
852 | static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) |
853 | { | |
854 | struct enic *enic = netdev_priv(netdev); | |
855 | struct sockaddr *saddr = p; | |
856 | char *addr = saddr->sa_data; | |
857 | int err; | |
858 | ||
859 | if (netif_running(enic->netdev)) { | |
860 | err = enic_dev_del_station_addr(enic); | |
861 | if (err) | |
862 | return err; | |
863 | } | |
864 | ||
865 | err = enic_set_mac_addr(netdev, addr); | |
866 | if (err) | |
867 | return err; | |
868 | ||
869 | if (netif_running(enic->netdev)) { | |
870 | err = enic_dev_add_station_addr(enic); | |
871 | if (err) | |
872 | return err; | |
873 | } | |
874 | ||
875 | return err; | |
876 | } | |
877 | ||
878 | static int enic_set_mac_address(struct net_device *netdev, void *p) | |
879 | { | |
294dab25 | 880 | struct sockaddr *saddr = p; |
c76fd32d VK |
881 | char *addr = saddr->sa_data; |
882 | struct enic *enic = netdev_priv(netdev); | |
883 | int err; | |
884 | ||
885 | err = enic_dev_del_station_addr(enic); | |
886 | if (err) | |
887 | return err; | |
888 | ||
889 | err = enic_set_mac_addr(netdev, addr); | |
890 | if (err) | |
891 | return err; | |
294dab25 | 892 | |
c76fd32d | 893 | return enic_dev_add_station_addr(enic); |
f8bd9091 SF |
894 | } |
895 | ||
e0afe53f | 896 | static void enic_update_multicast_addr_list(struct enic *enic) |
01f2e4ea | 897 | { |
319d7e84 | 898 | struct net_device *netdev = enic->netdev; |
22bedad3 | 899 | struct netdev_hw_addr *ha; |
4cd24eaf | 900 | unsigned int mc_count = netdev_mc_count(netdev); |
01f2e4ea | 901 | u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; |
01f2e4ea SF |
902 | unsigned int i, j; |
903 | ||
319d7e84 RP |
904 | if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { |
905 | netdev_warn(netdev, "Registering only %d out of %d " | |
906 | "multicast addresses\n", | |
907 | ENIC_MULTICAST_PERFECT_FILTERS, mc_count); | |
01f2e4ea | 908 | mc_count = ENIC_MULTICAST_PERFECT_FILTERS; |
9959a185 | 909 | } |
01f2e4ea SF |
910 | |
911 | /* Is there an easier way? Trying to minimize to | |
912 | * calls to add/del multicast addrs. We keep the | |
913 | * addrs from the last call in enic->mc_addr and | |
914 | * look for changes to add/del. | |
915 | */ | |
916 | ||
48e2f183 | 917 | i = 0; |
22bedad3 | 918 | netdev_for_each_mc_addr(ha, netdev) { |
48e2f183 JP |
919 | if (i == mc_count) |
920 | break; | |
22bedad3 | 921 | memcpy(mc_addr[i++], ha->addr, ETH_ALEN); |
01f2e4ea SF |
922 | } |
923 | ||
924 | for (i = 0; i < enic->mc_count; i++) { | |
925 | for (j = 0; j < mc_count; j++) | |
926 | if (compare_ether_addr(enic->mc_addr[i], | |
927 | mc_addr[j]) == 0) | |
928 | break; | |
929 | if (j == mc_count) | |
319d7e84 | 930 | enic_dev_del_addr(enic, enic->mc_addr[i]); |
01f2e4ea SF |
931 | } |
932 | ||
933 | for (i = 0; i < mc_count; i++) { | |
934 | for (j = 0; j < enic->mc_count; j++) | |
935 | if (compare_ether_addr(mc_addr[i], | |
936 | enic->mc_addr[j]) == 0) | |
937 | break; | |
938 | if (j == enic->mc_count) | |
319d7e84 | 939 | enic_dev_add_addr(enic, mc_addr[i]); |
01f2e4ea SF |
940 | } |
941 | ||
942 | /* Save the list to compare against next time | |
943 | */ | |
944 | ||
945 | for (i = 0; i < mc_count; i++) | |
946 | memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); | |
947 | ||
948 | enic->mc_count = mc_count; | |
01f2e4ea SF |
949 | } |
950 | ||
e0afe53f | 951 | static void enic_update_unicast_addr_list(struct enic *enic) |
319d7e84 RP |
952 | { |
953 | struct net_device *netdev = enic->netdev; | |
954 | struct netdev_hw_addr *ha; | |
955 | unsigned int uc_count = netdev_uc_count(netdev); | |
956 | u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; | |
957 | unsigned int i, j; | |
958 | ||
959 | if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { | |
960 | netdev_warn(netdev, "Registering only %d out of %d " | |
961 | "unicast addresses\n", | |
962 | ENIC_UNICAST_PERFECT_FILTERS, uc_count); | |
963 | uc_count = ENIC_UNICAST_PERFECT_FILTERS; | |
964 | } | |
965 | ||
966 | /* Is there an easier way? Trying to minimize to | |
967 | * calls to add/del unicast addrs. We keep the | |
968 | * addrs from the last call in enic->uc_addr and | |
969 | * look for changes to add/del. | |
970 | */ | |
971 | ||
972 | i = 0; | |
973 | netdev_for_each_uc_addr(ha, netdev) { | |
974 | if (i == uc_count) | |
975 | break; | |
976 | memcpy(uc_addr[i++], ha->addr, ETH_ALEN); | |
977 | } | |
978 | ||
979 | for (i = 0; i < enic->uc_count; i++) { | |
980 | for (j = 0; j < uc_count; j++) | |
981 | if (compare_ether_addr(enic->uc_addr[i], | |
982 | uc_addr[j]) == 0) | |
983 | break; | |
984 | if (j == uc_count) | |
985 | enic_dev_del_addr(enic, enic->uc_addr[i]); | |
986 | } | |
987 | ||
988 | for (i = 0; i < uc_count; i++) { | |
989 | for (j = 0; j < enic->uc_count; j++) | |
990 | if (compare_ether_addr(uc_addr[i], | |
991 | enic->uc_addr[j]) == 0) | |
992 | break; | |
993 | if (j == enic->uc_count) | |
994 | enic_dev_add_addr(enic, uc_addr[i]); | |
995 | } | |
996 | ||
997 | /* Save the list to compare against next time | |
998 | */ | |
999 | ||
1000 | for (i = 0; i < uc_count; i++) | |
1001 | memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); | |
1002 | ||
1003 | enic->uc_count = uc_count; | |
1004 | } | |
1005 | ||
1006 | /* netif_tx_lock held, BHs disabled */ | |
1007 | static void enic_set_rx_mode(struct net_device *netdev) | |
1008 | { | |
1009 | struct enic *enic = netdev_priv(netdev); | |
1010 | int directed = 1; | |
1011 | int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; | |
1012 | int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; | |
1013 | int promisc = (netdev->flags & IFF_PROMISC) || | |
1014 | netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; | |
1015 | int allmulti = (netdev->flags & IFF_ALLMULTI) || | |
1016 | netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; | |
1017 | unsigned int flags = netdev->flags | | |
1018 | (allmulti ? IFF_ALLMULTI : 0) | | |
1019 | (promisc ? IFF_PROMISC : 0); | |
1020 | ||
1021 | if (enic->flags != flags) { | |
1022 | enic->flags = flags; | |
1023 | enic_dev_packet_filter(enic, directed, | |
1024 | multicast, broadcast, promisc, allmulti); | |
1025 | } | |
1026 | ||
1027 | if (!promisc) { | |
e0afe53f | 1028 | enic_update_unicast_addr_list(enic); |
319d7e84 | 1029 | if (!allmulti) |
e0afe53f | 1030 | enic_update_multicast_addr_list(enic); |
319d7e84 RP |
1031 | } |
1032 | } | |
1033 | ||
01f2e4ea SF |
1034 | /* rtnl lock is held */ |
1035 | static void enic_vlan_rx_register(struct net_device *netdev, | |
1036 | struct vlan_group *vlan_group) | |
1037 | { | |
1038 | struct enic *enic = netdev_priv(netdev); | |
1039 | enic->vlan_group = vlan_group; | |
1040 | } | |
1041 | ||
01f2e4ea SF |
1042 | /* netif_tx_lock held, BHs disabled */ |
1043 | static void enic_tx_timeout(struct net_device *netdev) | |
1044 | { | |
1045 | struct enic *enic = netdev_priv(netdev); | |
1046 | schedule_work(&enic->reset); | |
1047 | } | |
1048 | ||
0b1c00fc RP |
1049 | static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
1050 | { | |
1051 | struct enic *enic = netdev_priv(netdev); | |
1052 | ||
1053 | if (vf != PORT_SELF_VF) | |
1054 | return -EOPNOTSUPP; | |
1055 | ||
1056 | /* Ignore the vf argument for now. We can assume the request | |
1057 | * is coming on a vf. | |
1058 | */ | |
1059 | if (is_valid_ether_addr(mac)) { | |
1060 | memcpy(enic->pp.vf_mac, mac, ETH_ALEN); | |
1061 | return 0; | |
1062 | } else | |
1063 | return -EINVAL; | |
1064 | } | |
1065 | ||
f8bd9091 SF |
1066 | static int enic_set_vf_port(struct net_device *netdev, int vf, |
1067 | struct nlattr *port[]) | |
1068 | { | |
1069 | struct enic *enic = netdev_priv(netdev); | |
b3abfbd2 RP |
1070 | struct enic_port_profile prev_pp; |
1071 | int err = 0, restore_pp = 1; | |
08f382eb | 1072 | |
b3abfbd2 RP |
1073 | /* don't support VFs, yet */ |
1074 | if (vf != PORT_SELF_VF) | |
1075 | return -EOPNOTSUPP; | |
08f382eb | 1076 | |
b3abfbd2 RP |
1077 | if (!port[IFLA_PORT_REQUEST]) |
1078 | return -EOPNOTSUPP; | |
1079 | ||
1080 | memcpy(&prev_pp, &enic->pp, sizeof(enic->pp)); | |
1081 | memset(&enic->pp, 0, sizeof(enic->pp)); | |
1082 | ||
1083 | enic->pp.set |= ENIC_SET_REQUEST; | |
1084 | enic->pp.request = nla_get_u8(port[IFLA_PORT_REQUEST]); | |
08f382eb SF |
1085 | |
1086 | if (port[IFLA_PORT_PROFILE]) { | |
b3abfbd2 RP |
1087 | enic->pp.set |= ENIC_SET_NAME; |
1088 | memcpy(enic->pp.name, nla_data(port[IFLA_PORT_PROFILE]), | |
08f382eb SF |
1089 | PORT_PROFILE_MAX); |
1090 | } | |
1091 | ||
1092 | if (port[IFLA_PORT_INSTANCE_UUID]) { | |
b3abfbd2 RP |
1093 | enic->pp.set |= ENIC_SET_INSTANCE; |
1094 | memcpy(enic->pp.instance_uuid, | |
08f382eb SF |
1095 | nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); |
1096 | } | |
1097 | ||
1098 | if (port[IFLA_PORT_HOST_UUID]) { | |
b3abfbd2 RP |
1099 | enic->pp.set |= ENIC_SET_HOST; |
1100 | memcpy(enic->pp.host_uuid, | |
08f382eb SF |
1101 | nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); |
1102 | } | |
f8bd9091 | 1103 | |
b3abfbd2 RP |
1104 | /* Special case handling: mac came from IFLA_VF_MAC */ |
1105 | if (!is_zero_ether_addr(prev_pp.vf_mac)) | |
1106 | memcpy(enic->pp.mac_addr, prev_pp.vf_mac, ETH_ALEN); | |
418c437d SF |
1107 | |
1108 | if (is_zero_ether_addr(netdev->dev_addr)) | |
1109 | random_ether_addr(netdev->dev_addr); | |
f8bd9091 | 1110 | |
b3abfbd2 RP |
1111 | err = enic_process_set_pp_request(enic, &prev_pp, &restore_pp); |
1112 | if (err) { | |
1113 | if (restore_pp) { | |
1114 | /* Things are still the way they were: Implicit | |
1115 | * DISASSOCIATE failed | |
1116 | */ | |
1117 | memcpy(&enic->pp, &prev_pp, sizeof(enic->pp)); | |
1118 | } else { | |
1119 | memset(&enic->pp, 0, sizeof(enic->pp)); | |
1120 | memset(netdev->dev_addr, 0, ETH_ALEN); | |
1121 | } | |
1122 | } else { | |
1123 | /* Set flag to indicate that the port assoc/disassoc | |
1124 | * request has been sent out to fw | |
1125 | */ | |
1126 | enic->pp.set |= ENIC_PORT_REQUEST_APPLIED; | |
1127 | ||
1128 | /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ | |
1129 | if (enic->pp.request == PORT_REQUEST_DISASSOCIATE) { | |
1130 | memset(enic->pp.mac_addr, 0, ETH_ALEN); | |
1131 | memset(netdev->dev_addr, 0, ETH_ALEN); | |
1132 | } | |
1133 | } | |
29639059 | 1134 | |
29639059 RP |
1135 | memset(enic->pp.vf_mac, 0, ETH_ALEN); |
1136 | ||
29639059 | 1137 | return err; |
f8bd9091 SF |
1138 | } |
1139 | ||
1140 | static int enic_get_vf_port(struct net_device *netdev, int vf, | |
1141 | struct sk_buff *skb) | |
1142 | { | |
1143 | struct enic *enic = netdev_priv(netdev); | |
f8bd9091 | 1144 | u16 response = PORT_PROFILE_RESPONSE_SUCCESS; |
b3abfbd2 | 1145 | int err; |
f8bd9091 | 1146 | |
4dce2396 | 1147 | if (!(enic->pp.set & ENIC_PORT_REQUEST_APPLIED)) |
08f382eb | 1148 | return -ENODATA; |
f8bd9091 | 1149 | |
b3abfbd2 | 1150 | err = enic_process_get_pp_request(enic, enic->pp.request, &response); |
f8bd9091 | 1151 | if (err) |
b3abfbd2 | 1152 | return err; |
f8bd9091 SF |
1153 | |
1154 | NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request); | |
1155 | NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response); | |
08f382eb SF |
1156 | if (enic->pp.set & ENIC_SET_NAME) |
1157 | NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, | |
1158 | enic->pp.name); | |
1159 | if (enic->pp.set & ENIC_SET_INSTANCE) | |
1160 | NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, | |
1161 | enic->pp.instance_uuid); | |
1162 | if (enic->pp.set & ENIC_SET_HOST) | |
1163 | NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, | |
1164 | enic->pp.host_uuid); | |
f8bd9091 SF |
1165 | |
1166 | return 0; | |
1167 | ||
1168 | nla_put_failure: | |
1169 | return -EMSGSIZE; | |
1170 | } | |
1171 | ||
01f2e4ea SF |
1172 | static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) |
1173 | { | |
1174 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
1175 | ||
1176 | if (!buf->os_buf) | |
1177 | return; | |
1178 | ||
1179 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
1180 | buf->len, PCI_DMA_FROMDEVICE); | |
1181 | dev_kfree_skb_any(buf->os_buf); | |
1182 | } | |
1183 | ||
01f2e4ea SF |
1184 | static int enic_rq_alloc_buf(struct vnic_rq *rq) |
1185 | { | |
1186 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
d19e22dc | 1187 | struct net_device *netdev = enic->netdev; |
01f2e4ea | 1188 | struct sk_buff *skb; |
1825aca6 | 1189 | unsigned int len = netdev->mtu + VLAN_ETH_HLEN; |
01f2e4ea SF |
1190 | unsigned int os_buf_index = 0; |
1191 | dma_addr_t dma_addr; | |
1192 | ||
89d71a66 | 1193 | skb = netdev_alloc_skb_ip_align(netdev, len); |
01f2e4ea SF |
1194 | if (!skb) |
1195 | return -ENOMEM; | |
1196 | ||
1197 | dma_addr = pci_map_single(enic->pdev, skb->data, | |
1198 | len, PCI_DMA_FROMDEVICE); | |
1199 | ||
1200 | enic_queue_rq_desc(rq, skb, os_buf_index, | |
1201 | dma_addr, len); | |
1202 | ||
1203 | return 0; | |
1204 | } | |
1205 | ||
01f2e4ea SF |
1206 | static void enic_rq_indicate_buf(struct vnic_rq *rq, |
1207 | struct cq_desc *cq_desc, struct vnic_rq_buf *buf, | |
1208 | int skipped, void *opaque) | |
1209 | { | |
1210 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
86ca9db7 | 1211 | struct net_device *netdev = enic->netdev; |
01f2e4ea SF |
1212 | struct sk_buff *skb; |
1213 | ||
1214 | u8 type, color, eop, sop, ingress_port, vlan_stripped; | |
1215 | u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; | |
1216 | u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; | |
1217 | u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; | |
1218 | u8 packet_error; | |
f8cac14a | 1219 | u16 q_number, completed_index, bytes_written, vlan_tci, checksum; |
01f2e4ea SF |
1220 | u32 rss_hash; |
1221 | ||
1222 | if (skipped) | |
1223 | return; | |
1224 | ||
1225 | skb = buf->os_buf; | |
1226 | prefetch(skb->data - NET_IP_ALIGN); | |
1227 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
1228 | buf->len, PCI_DMA_FROMDEVICE); | |
1229 | ||
1230 | cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, | |
1231 | &type, &color, &q_number, &completed_index, | |
1232 | &ingress_port, &fcoe, &eop, &sop, &rss_type, | |
1233 | &csum_not_calc, &rss_hash, &bytes_written, | |
f8cac14a | 1234 | &packet_error, &vlan_stripped, &vlan_tci, &checksum, |
01f2e4ea SF |
1235 | &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, |
1236 | &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, | |
1237 | &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, | |
1238 | &fcs_ok); | |
1239 | ||
1240 | if (packet_error) { | |
1241 | ||
350991e1 SF |
1242 | if (!fcs_ok) { |
1243 | if (bytes_written > 0) | |
1244 | enic->rq_bad_fcs++; | |
1245 | else if (bytes_written == 0) | |
1246 | enic->rq_truncated_pkts++; | |
1247 | } | |
01f2e4ea SF |
1248 | |
1249 | dev_kfree_skb_any(skb); | |
1250 | ||
1251 | return; | |
1252 | } | |
1253 | ||
1254 | if (eop && bytes_written > 0) { | |
1255 | ||
1256 | /* Good receive | |
1257 | */ | |
1258 | ||
1259 | skb_put(skb, bytes_written); | |
86ca9db7 | 1260 | skb->protocol = eth_type_trans(skb, netdev); |
01f2e4ea | 1261 | |
5ec8f9b8 | 1262 | if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { |
01f2e4ea SF |
1263 | skb->csum = htons(checksum); |
1264 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1265 | } | |
1266 | ||
86ca9db7 | 1267 | skb->dev = netdev; |
01f2e4ea | 1268 | |
8757446d | 1269 | if (vlan_stripped) { |
01f2e4ea | 1270 | |
88132f55 | 1271 | if (netdev->features & NETIF_F_GRO) |
717258ba VK |
1272 | vlan_gro_receive(&enic->napi[q_number], |
1273 | enic->vlan_group, vlan_tci, skb); | |
01f2e4ea SF |
1274 | else |
1275 | vlan_hwaccel_receive_skb(skb, | |
f8cac14a | 1276 | enic->vlan_group, vlan_tci); |
01f2e4ea SF |
1277 | |
1278 | } else { | |
1279 | ||
88132f55 | 1280 | if (netdev->features & NETIF_F_GRO) |
717258ba | 1281 | napi_gro_receive(&enic->napi[q_number], skb); |
01f2e4ea SF |
1282 | else |
1283 | netif_receive_skb(skb); | |
1284 | ||
1285 | } | |
01f2e4ea SF |
1286 | } else { |
1287 | ||
1288 | /* Buffer overflow | |
1289 | */ | |
1290 | ||
1291 | dev_kfree_skb_any(skb); | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, | |
1296 | u8 type, u16 q_number, u16 completed_index, void *opaque) | |
1297 | { | |
1298 | struct enic *enic = vnic_dev_priv(vdev); | |
1299 | ||
1300 | vnic_rq_service(&enic->rq[q_number], cq_desc, | |
1301 | completed_index, VNIC_RQ_RETURN_DESC, | |
1302 | enic_rq_indicate_buf, opaque); | |
1303 | ||
1304 | return 0; | |
1305 | } | |
1306 | ||
01f2e4ea SF |
1307 | static int enic_poll(struct napi_struct *napi, int budget) |
1308 | { | |
717258ba VK |
1309 | struct net_device *netdev = napi->dev; |
1310 | struct enic *enic = netdev_priv(netdev); | |
1311 | unsigned int cq_rq = enic_cq_rq(enic, 0); | |
1312 | unsigned int cq_wq = enic_cq_wq(enic, 0); | |
1313 | unsigned int intr = enic_legacy_io_intr(); | |
01f2e4ea SF |
1314 | unsigned int rq_work_to_do = budget; |
1315 | unsigned int wq_work_to_do = -1; /* no limit */ | |
1316 | unsigned int work_done, rq_work_done, wq_work_done; | |
2d6ddced | 1317 | int err; |
01f2e4ea SF |
1318 | |
1319 | /* Service RQ (first) and WQ | |
1320 | */ | |
1321 | ||
717258ba | 1322 | rq_work_done = vnic_cq_service(&enic->cq[cq_rq], |
01f2e4ea SF |
1323 | rq_work_to_do, enic_rq_service, NULL); |
1324 | ||
717258ba | 1325 | wq_work_done = vnic_cq_service(&enic->cq[cq_wq], |
01f2e4ea SF |
1326 | wq_work_to_do, enic_wq_service, NULL); |
1327 | ||
1328 | /* Accumulate intr event credits for this polling | |
1329 | * cycle. An intr event is the completion of a | |
1330 | * a WQ or RQ packet. | |
1331 | */ | |
1332 | ||
1333 | work_done = rq_work_done + wq_work_done; | |
1334 | ||
1335 | if (work_done > 0) | |
717258ba | 1336 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
1337 | work_done, |
1338 | 0 /* don't unmask intr */, | |
1339 | 0 /* don't reset intr timer */); | |
1340 | ||
0eb26022 | 1341 | err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); |
01f2e4ea | 1342 | |
2d6ddced SF |
1343 | /* Buffer allocation failed. Stay in polling |
1344 | * mode so we can try to fill the ring again. | |
1345 | */ | |
01f2e4ea | 1346 | |
2d6ddced SF |
1347 | if (err) |
1348 | rq_work_done = rq_work_to_do; | |
01f2e4ea | 1349 | |
2d6ddced | 1350 | if (rq_work_done < rq_work_to_do) { |
01f2e4ea | 1351 | |
2d6ddced | 1352 | /* Some work done, but not enough to stay in polling, |
88132f55 | 1353 | * exit polling |
01f2e4ea SF |
1354 | */ |
1355 | ||
288379f0 | 1356 | napi_complete(napi); |
717258ba | 1357 | vnic_intr_unmask(&enic->intr[intr]); |
01f2e4ea SF |
1358 | } |
1359 | ||
1360 | return rq_work_done; | |
1361 | } | |
1362 | ||
1363 | static int enic_poll_msix(struct napi_struct *napi, int budget) | |
1364 | { | |
717258ba VK |
1365 | struct net_device *netdev = napi->dev; |
1366 | struct enic *enic = netdev_priv(netdev); | |
1367 | unsigned int rq = (napi - &enic->napi[0]); | |
1368 | unsigned int cq = enic_cq_rq(enic, rq); | |
1369 | unsigned int intr = enic_msix_rq_intr(enic, rq); | |
01f2e4ea SF |
1370 | unsigned int work_to_do = budget; |
1371 | unsigned int work_done; | |
2d6ddced | 1372 | int err; |
01f2e4ea SF |
1373 | |
1374 | /* Service RQ | |
1375 | */ | |
1376 | ||
717258ba | 1377 | work_done = vnic_cq_service(&enic->cq[cq], |
01f2e4ea SF |
1378 | work_to_do, enic_rq_service, NULL); |
1379 | ||
2d6ddced SF |
1380 | /* Return intr event credits for this polling |
1381 | * cycle. An intr event is the completion of a | |
1382 | * RQ packet. | |
1383 | */ | |
01f2e4ea | 1384 | |
2d6ddced | 1385 | if (work_done > 0) |
717258ba | 1386 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
1387 | work_done, |
1388 | 0 /* don't unmask intr */, | |
1389 | 0 /* don't reset intr timer */); | |
01f2e4ea | 1390 | |
0eb26022 | 1391 | err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); |
2d6ddced SF |
1392 | |
1393 | /* Buffer allocation failed. Stay in polling mode | |
1394 | * so we can try to fill the ring again. | |
1395 | */ | |
1396 | ||
1397 | if (err) | |
1398 | work_done = work_to_do; | |
1399 | ||
1400 | if (work_done < work_to_do) { | |
1401 | ||
1402 | /* Some work done, but not enough to stay in polling, | |
88132f55 | 1403 | * exit polling |
01f2e4ea SF |
1404 | */ |
1405 | ||
288379f0 | 1406 | napi_complete(napi); |
717258ba | 1407 | vnic_intr_unmask(&enic->intr[intr]); |
01f2e4ea SF |
1408 | } |
1409 | ||
1410 | return work_done; | |
1411 | } | |
1412 | ||
1413 | static void enic_notify_timer(unsigned long data) | |
1414 | { | |
1415 | struct enic *enic = (struct enic *)data; | |
1416 | ||
1417 | enic_notify_check(enic); | |
1418 | ||
25f0a061 SF |
1419 | mod_timer(&enic->notify_timer, |
1420 | round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); | |
01f2e4ea SF |
1421 | } |
1422 | ||
1423 | static void enic_free_intr(struct enic *enic) | |
1424 | { | |
1425 | struct net_device *netdev = enic->netdev; | |
1426 | unsigned int i; | |
1427 | ||
1428 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1429 | case VNIC_DEV_INTR_MODE_INTX: | |
01f2e4ea SF |
1430 | free_irq(enic->pdev->irq, netdev); |
1431 | break; | |
8f4d248c SF |
1432 | case VNIC_DEV_INTR_MODE_MSI: |
1433 | free_irq(enic->pdev->irq, enic); | |
1434 | break; | |
01f2e4ea SF |
1435 | case VNIC_DEV_INTR_MODE_MSIX: |
1436 | for (i = 0; i < ARRAY_SIZE(enic->msix); i++) | |
1437 | if (enic->msix[i].requested) | |
1438 | free_irq(enic->msix_entry[i].vector, | |
1439 | enic->msix[i].devid); | |
1440 | break; | |
1441 | default: | |
1442 | break; | |
1443 | } | |
1444 | } | |
1445 | ||
1446 | static int enic_request_intr(struct enic *enic) | |
1447 | { | |
1448 | struct net_device *netdev = enic->netdev; | |
717258ba | 1449 | unsigned int i, intr; |
01f2e4ea SF |
1450 | int err = 0; |
1451 | ||
1452 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1453 | ||
1454 | case VNIC_DEV_INTR_MODE_INTX: | |
1455 | ||
1456 | err = request_irq(enic->pdev->irq, enic_isr_legacy, | |
1457 | IRQF_SHARED, netdev->name, netdev); | |
1458 | break; | |
1459 | ||
1460 | case VNIC_DEV_INTR_MODE_MSI: | |
1461 | ||
1462 | err = request_irq(enic->pdev->irq, enic_isr_msi, | |
1463 | 0, netdev->name, enic); | |
1464 | break; | |
1465 | ||
1466 | case VNIC_DEV_INTR_MODE_MSIX: | |
1467 | ||
717258ba VK |
1468 | for (i = 0; i < enic->rq_count; i++) { |
1469 | intr = enic_msix_rq_intr(enic, i); | |
1470 | sprintf(enic->msix[intr].devname, | |
1471 | "%.11s-rx-%d", netdev->name, i); | |
1472 | enic->msix[intr].isr = enic_isr_msix_rq; | |
1473 | enic->msix[intr].devid = &enic->napi[i]; | |
1474 | } | |
01f2e4ea | 1475 | |
717258ba VK |
1476 | for (i = 0; i < enic->wq_count; i++) { |
1477 | intr = enic_msix_wq_intr(enic, i); | |
1478 | sprintf(enic->msix[intr].devname, | |
1479 | "%.11s-tx-%d", netdev->name, i); | |
1480 | enic->msix[intr].isr = enic_isr_msix_wq; | |
1481 | enic->msix[intr].devid = enic; | |
1482 | } | |
01f2e4ea | 1483 | |
717258ba VK |
1484 | intr = enic_msix_err_intr(enic); |
1485 | sprintf(enic->msix[intr].devname, | |
01f2e4ea | 1486 | "%.11s-err", netdev->name); |
717258ba VK |
1487 | enic->msix[intr].isr = enic_isr_msix_err; |
1488 | enic->msix[intr].devid = enic; | |
01f2e4ea | 1489 | |
717258ba VK |
1490 | intr = enic_msix_notify_intr(enic); |
1491 | sprintf(enic->msix[intr].devname, | |
01f2e4ea | 1492 | "%.11s-notify", netdev->name); |
717258ba VK |
1493 | enic->msix[intr].isr = enic_isr_msix_notify; |
1494 | enic->msix[intr].devid = enic; | |
1495 | ||
1496 | for (i = 0; i < ARRAY_SIZE(enic->msix); i++) | |
1497 | enic->msix[i].requested = 0; | |
01f2e4ea | 1498 | |
717258ba | 1499 | for (i = 0; i < enic->intr_count; i++) { |
01f2e4ea SF |
1500 | err = request_irq(enic->msix_entry[i].vector, |
1501 | enic->msix[i].isr, 0, | |
1502 | enic->msix[i].devname, | |
1503 | enic->msix[i].devid); | |
1504 | if (err) { | |
1505 | enic_free_intr(enic); | |
1506 | break; | |
1507 | } | |
1508 | enic->msix[i].requested = 1; | |
1509 | } | |
1510 | ||
1511 | break; | |
1512 | ||
1513 | default: | |
1514 | break; | |
1515 | } | |
1516 | ||
1517 | return err; | |
1518 | } | |
1519 | ||
b3d18d19 SF |
1520 | static void enic_synchronize_irqs(struct enic *enic) |
1521 | { | |
1522 | unsigned int i; | |
1523 | ||
1524 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1525 | case VNIC_DEV_INTR_MODE_INTX: | |
1526 | case VNIC_DEV_INTR_MODE_MSI: | |
1527 | synchronize_irq(enic->pdev->irq); | |
1528 | break; | |
1529 | case VNIC_DEV_INTR_MODE_MSIX: | |
1530 | for (i = 0; i < enic->intr_count; i++) | |
1531 | synchronize_irq(enic->msix_entry[i].vector); | |
1532 | break; | |
1533 | default: | |
1534 | break; | |
1535 | } | |
1536 | } | |
1537 | ||
383ab92f | 1538 | static int enic_dev_notify_set(struct enic *enic) |
01f2e4ea SF |
1539 | { |
1540 | int err; | |
1541 | ||
56ac88b3 | 1542 | spin_lock(&enic->devcmd_lock); |
01f2e4ea SF |
1543 | switch (vnic_dev_get_intr_mode(enic->vdev)) { |
1544 | case VNIC_DEV_INTR_MODE_INTX: | |
717258ba VK |
1545 | err = vnic_dev_notify_set(enic->vdev, |
1546 | enic_legacy_notify_intr()); | |
01f2e4ea SF |
1547 | break; |
1548 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
1549 | err = vnic_dev_notify_set(enic->vdev, |
1550 | enic_msix_notify_intr(enic)); | |
01f2e4ea SF |
1551 | break; |
1552 | default: | |
1553 | err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); | |
1554 | break; | |
1555 | } | |
56ac88b3 | 1556 | spin_unlock(&enic->devcmd_lock); |
01f2e4ea SF |
1557 | |
1558 | return err; | |
1559 | } | |
1560 | ||
1561 | static void enic_notify_timer_start(struct enic *enic) | |
1562 | { | |
1563 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1564 | case VNIC_DEV_INTR_MODE_MSI: | |
1565 | mod_timer(&enic->notify_timer, jiffies); | |
1566 | break; | |
1567 | default: | |
1568 | /* Using intr for notification for INTx/MSI-X */ | |
1569 | break; | |
6403eab1 | 1570 | } |
01f2e4ea SF |
1571 | } |
1572 | ||
1573 | /* rtnl lock is held, process context */ | |
1574 | static int enic_open(struct net_device *netdev) | |
1575 | { | |
1576 | struct enic *enic = netdev_priv(netdev); | |
1577 | unsigned int i; | |
1578 | int err; | |
1579 | ||
4b75a442 SF |
1580 | err = enic_request_intr(enic); |
1581 | if (err) { | |
a7a79deb | 1582 | netdev_err(netdev, "Unable to request irq.\n"); |
4b75a442 SF |
1583 | return err; |
1584 | } | |
1585 | ||
383ab92f | 1586 | err = enic_dev_notify_set(enic); |
4b75a442 | 1587 | if (err) { |
a7a79deb VK |
1588 | netdev_err(netdev, |
1589 | "Failed to alloc notify buffer, aborting.\n"); | |
4b75a442 SF |
1590 | goto err_out_free_intr; |
1591 | } | |
1592 | ||
01f2e4ea | 1593 | for (i = 0; i < enic->rq_count; i++) { |
0eb26022 | 1594 | vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); |
2d6ddced SF |
1595 | /* Need at least one buffer on ring to get going */ |
1596 | if (vnic_rq_desc_used(&enic->rq[i]) == 0) { | |
a7a79deb | 1597 | netdev_err(netdev, "Unable to alloc receive buffers\n"); |
2d6ddced | 1598 | err = -ENOMEM; |
4b75a442 | 1599 | goto err_out_notify_unset; |
01f2e4ea SF |
1600 | } |
1601 | } | |
1602 | ||
1603 | for (i = 0; i < enic->wq_count; i++) | |
1604 | vnic_wq_enable(&enic->wq[i]); | |
1605 | for (i = 0; i < enic->rq_count; i++) | |
1606 | vnic_rq_enable(&enic->rq[i]); | |
1607 | ||
29639059 RP |
1608 | if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) |
1609 | enic_dev_add_addr(enic, enic->pp.mac_addr); | |
1610 | else | |
1611 | enic_dev_add_station_addr(enic); | |
319d7e84 | 1612 | enic_set_rx_mode(netdev); |
01f2e4ea SF |
1613 | |
1614 | netif_wake_queue(netdev); | |
717258ba VK |
1615 | |
1616 | for (i = 0; i < enic->rq_count; i++) | |
1617 | napi_enable(&enic->napi[i]); | |
1618 | ||
383ab92f | 1619 | enic_dev_enable(enic); |
01f2e4ea SF |
1620 | |
1621 | for (i = 0; i < enic->intr_count; i++) | |
1622 | vnic_intr_unmask(&enic->intr[i]); | |
1623 | ||
1624 | enic_notify_timer_start(enic); | |
1625 | ||
1626 | return 0; | |
4b75a442 SF |
1627 | |
1628 | err_out_notify_unset: | |
383ab92f | 1629 | enic_dev_notify_unset(enic); |
4b75a442 SF |
1630 | err_out_free_intr: |
1631 | enic_free_intr(enic); | |
1632 | ||
1633 | return err; | |
01f2e4ea SF |
1634 | } |
1635 | ||
1636 | /* rtnl lock is held, process context */ | |
1637 | static int enic_stop(struct net_device *netdev) | |
1638 | { | |
1639 | struct enic *enic = netdev_priv(netdev); | |
1640 | unsigned int i; | |
1641 | int err; | |
1642 | ||
29046f9b | 1643 | for (i = 0; i < enic->intr_count; i++) { |
b3d18d19 | 1644 | vnic_intr_mask(&enic->intr[i]); |
29046f9b VK |
1645 | (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ |
1646 | } | |
b3d18d19 SF |
1647 | |
1648 | enic_synchronize_irqs(enic); | |
1649 | ||
01f2e4ea SF |
1650 | del_timer_sync(&enic->notify_timer); |
1651 | ||
383ab92f | 1652 | enic_dev_disable(enic); |
717258ba VK |
1653 | |
1654 | for (i = 0; i < enic->rq_count; i++) | |
1655 | napi_disable(&enic->napi[i]); | |
1656 | ||
b3d18d19 SF |
1657 | netif_carrier_off(netdev); |
1658 | netif_tx_disable(netdev); | |
29639059 RP |
1659 | if (enic_is_dynamic(enic) && !is_zero_ether_addr(enic->pp.mac_addr)) |
1660 | enic_dev_del_addr(enic, enic->pp.mac_addr); | |
1661 | else | |
1662 | enic_dev_del_station_addr(enic); | |
f8bd9091 | 1663 | |
01f2e4ea SF |
1664 | for (i = 0; i < enic->wq_count; i++) { |
1665 | err = vnic_wq_disable(&enic->wq[i]); | |
1666 | if (err) | |
1667 | return err; | |
1668 | } | |
1669 | for (i = 0; i < enic->rq_count; i++) { | |
1670 | err = vnic_rq_disable(&enic->rq[i]); | |
1671 | if (err) | |
1672 | return err; | |
1673 | } | |
1674 | ||
383ab92f | 1675 | enic_dev_notify_unset(enic); |
4b75a442 SF |
1676 | enic_free_intr(enic); |
1677 | ||
01f2e4ea SF |
1678 | for (i = 0; i < enic->wq_count; i++) |
1679 | vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); | |
1680 | for (i = 0; i < enic->rq_count; i++) | |
1681 | vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); | |
1682 | for (i = 0; i < enic->cq_count; i++) | |
1683 | vnic_cq_clean(&enic->cq[i]); | |
1684 | for (i = 0; i < enic->intr_count; i++) | |
1685 | vnic_intr_clean(&enic->intr[i]); | |
1686 | ||
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | static int enic_change_mtu(struct net_device *netdev, int new_mtu) | |
1691 | { | |
1692 | struct enic *enic = netdev_priv(netdev); | |
1693 | int running = netif_running(netdev); | |
1694 | ||
25f0a061 SF |
1695 | if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) |
1696 | return -EINVAL; | |
1697 | ||
c97c894d RP |
1698 | if (enic_is_dynamic(enic)) |
1699 | return -EOPNOTSUPP; | |
1700 | ||
01f2e4ea SF |
1701 | if (running) |
1702 | enic_stop(netdev); | |
1703 | ||
01f2e4ea SF |
1704 | netdev->mtu = new_mtu; |
1705 | ||
1706 | if (netdev->mtu > enic->port_mtu) | |
a7a79deb VK |
1707 | netdev_warn(netdev, |
1708 | "interface MTU (%d) set higher than port MTU (%d)\n", | |
1709 | netdev->mtu, enic->port_mtu); | |
01f2e4ea SF |
1710 | |
1711 | if (running) | |
1712 | enic_open(netdev); | |
1713 | ||
1714 | return 0; | |
1715 | } | |
1716 | ||
c97c894d RP |
1717 | static void enic_change_mtu_work(struct work_struct *work) |
1718 | { | |
1719 | struct enic *enic = container_of(work, struct enic, change_mtu_work); | |
1720 | struct net_device *netdev = enic->netdev; | |
1721 | int new_mtu = vnic_dev_mtu(enic->vdev); | |
1722 | int err; | |
1723 | unsigned int i; | |
1724 | ||
1725 | new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); | |
1726 | ||
1727 | rtnl_lock(); | |
1728 | ||
1729 | /* Stop RQ */ | |
1730 | del_timer_sync(&enic->notify_timer); | |
1731 | ||
1732 | for (i = 0; i < enic->rq_count; i++) | |
1733 | napi_disable(&enic->napi[i]); | |
1734 | ||
1735 | vnic_intr_mask(&enic->intr[0]); | |
1736 | enic_synchronize_irqs(enic); | |
1737 | err = vnic_rq_disable(&enic->rq[0]); | |
1738 | if (err) { | |
1739 | netdev_err(netdev, "Unable to disable RQ.\n"); | |
1740 | return; | |
1741 | } | |
1742 | vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); | |
1743 | vnic_cq_clean(&enic->cq[0]); | |
1744 | vnic_intr_clean(&enic->intr[0]); | |
1745 | ||
1746 | /* Fill RQ with new_mtu-sized buffers */ | |
1747 | netdev->mtu = new_mtu; | |
1748 | vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); | |
1749 | /* Need at least one buffer on ring to get going */ | |
1750 | if (vnic_rq_desc_used(&enic->rq[0]) == 0) { | |
1751 | netdev_err(netdev, "Unable to alloc receive buffers.\n"); | |
1752 | return; | |
1753 | } | |
1754 | ||
1755 | /* Start RQ */ | |
1756 | vnic_rq_enable(&enic->rq[0]); | |
1757 | napi_enable(&enic->napi[0]); | |
1758 | vnic_intr_unmask(&enic->intr[0]); | |
1759 | enic_notify_timer_start(enic); | |
1760 | ||
1761 | rtnl_unlock(); | |
1762 | ||
1763 | netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); | |
1764 | } | |
1765 | ||
01f2e4ea SF |
1766 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1767 | static void enic_poll_controller(struct net_device *netdev) | |
1768 | { | |
1769 | struct enic *enic = netdev_priv(netdev); | |
1770 | struct vnic_dev *vdev = enic->vdev; | |
717258ba | 1771 | unsigned int i, intr; |
01f2e4ea SF |
1772 | |
1773 | switch (vnic_dev_get_intr_mode(vdev)) { | |
1774 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
1775 | for (i = 0; i < enic->rq_count; i++) { |
1776 | intr = enic_msix_rq_intr(enic, i); | |
79aeec58 VK |
1777 | enic_isr_msix_rq(enic->msix_entry[intr].vector, |
1778 | &enic->napi[i]); | |
717258ba VK |
1779 | } |
1780 | intr = enic_msix_wq_intr(enic, i); | |
1781 | enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); | |
01f2e4ea SF |
1782 | break; |
1783 | case VNIC_DEV_INTR_MODE_MSI: | |
1784 | enic_isr_msi(enic->pdev->irq, enic); | |
1785 | break; | |
1786 | case VNIC_DEV_INTR_MODE_INTX: | |
1787 | enic_isr_legacy(enic->pdev->irq, netdev); | |
1788 | break; | |
1789 | default: | |
1790 | break; | |
1791 | } | |
1792 | } | |
1793 | #endif | |
1794 | ||
1795 | static int enic_dev_wait(struct vnic_dev *vdev, | |
1796 | int (*start)(struct vnic_dev *, int), | |
1797 | int (*finished)(struct vnic_dev *, int *), | |
1798 | int arg) | |
1799 | { | |
1800 | unsigned long time; | |
1801 | int done; | |
1802 | int err; | |
1803 | ||
1804 | BUG_ON(in_interrupt()); | |
1805 | ||
1806 | err = start(vdev, arg); | |
1807 | if (err) | |
1808 | return err; | |
1809 | ||
1810 | /* Wait for func to complete...2 seconds max | |
1811 | */ | |
1812 | ||
1813 | time = jiffies + (HZ * 2); | |
1814 | do { | |
1815 | ||
1816 | err = finished(vdev, &done); | |
1817 | if (err) | |
1818 | return err; | |
1819 | ||
1820 | if (done) | |
1821 | return 0; | |
1822 | ||
1823 | schedule_timeout_uninterruptible(HZ / 10); | |
1824 | ||
1825 | } while (time_after(time, jiffies)); | |
1826 | ||
1827 | return -ETIMEDOUT; | |
1828 | } | |
1829 | ||
1830 | static int enic_dev_open(struct enic *enic) | |
1831 | { | |
1832 | int err; | |
1833 | ||
1834 | err = enic_dev_wait(enic->vdev, vnic_dev_open, | |
1835 | vnic_dev_open_done, 0); | |
1836 | if (err) | |
a7a79deb VK |
1837 | dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", |
1838 | err); | |
01f2e4ea SF |
1839 | |
1840 | return err; | |
1841 | } | |
1842 | ||
99ef5639 | 1843 | static int enic_dev_hang_reset(struct enic *enic) |
01f2e4ea SF |
1844 | { |
1845 | int err; | |
1846 | ||
99ef5639 VK |
1847 | err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, |
1848 | vnic_dev_hang_reset_done, 0); | |
01f2e4ea | 1849 | if (err) |
a7a79deb VK |
1850 | netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", |
1851 | err); | |
01f2e4ea SF |
1852 | |
1853 | return err; | |
1854 | } | |
1855 | ||
717258ba VK |
1856 | static int enic_set_rsskey(struct enic *enic) |
1857 | { | |
1f4f067f | 1858 | dma_addr_t rss_key_buf_pa; |
717258ba VK |
1859 | union vnic_rss_key *rss_key_buf_va = NULL; |
1860 | union vnic_rss_key rss_key = { | |
1861 | .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, | |
1862 | .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, | |
1863 | .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, | |
1864 | .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, | |
1865 | }; | |
1866 | int err; | |
1867 | ||
1868 | rss_key_buf_va = pci_alloc_consistent(enic->pdev, | |
1869 | sizeof(union vnic_rss_key), &rss_key_buf_pa); | |
1870 | if (!rss_key_buf_va) | |
1871 | return -ENOMEM; | |
1872 | ||
1873 | memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); | |
1874 | ||
1875 | spin_lock(&enic->devcmd_lock); | |
1876 | err = enic_set_rss_key(enic, | |
1877 | rss_key_buf_pa, | |
1878 | sizeof(union vnic_rss_key)); | |
1879 | spin_unlock(&enic->devcmd_lock); | |
1880 | ||
1881 | pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), | |
1882 | rss_key_buf_va, rss_key_buf_pa); | |
1883 | ||
1884 | return err; | |
1885 | } | |
1886 | ||
1887 | static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) | |
1888 | { | |
1f4f067f | 1889 | dma_addr_t rss_cpu_buf_pa; |
717258ba VK |
1890 | union vnic_rss_cpu *rss_cpu_buf_va = NULL; |
1891 | unsigned int i; | |
1892 | int err; | |
1893 | ||
1894 | rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, | |
1895 | sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); | |
1896 | if (!rss_cpu_buf_va) | |
1897 | return -ENOMEM; | |
1898 | ||
1899 | for (i = 0; i < (1 << rss_hash_bits); i++) | |
1900 | (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; | |
1901 | ||
1902 | spin_lock(&enic->devcmd_lock); | |
1903 | err = enic_set_rss_cpu(enic, | |
1904 | rss_cpu_buf_pa, | |
1905 | sizeof(union vnic_rss_cpu)); | |
1906 | spin_unlock(&enic->devcmd_lock); | |
1907 | ||
1908 | pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), | |
1909 | rss_cpu_buf_va, rss_cpu_buf_pa); | |
1910 | ||
1911 | return err; | |
1912 | } | |
1913 | ||
1914 | static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, | |
1915 | u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) | |
68f71708 | 1916 | { |
68f71708 SF |
1917 | const u8 tso_ipid_split_en = 0; |
1918 | const u8 ig_vlan_strip_en = 1; | |
383ab92f | 1919 | int err; |
68f71708 | 1920 | |
717258ba VK |
1921 | /* Enable VLAN tag stripping. |
1922 | */ | |
68f71708 | 1923 | |
383ab92f VK |
1924 | spin_lock(&enic->devcmd_lock); |
1925 | err = enic_set_nic_cfg(enic, | |
68f71708 SF |
1926 | rss_default_cpu, rss_hash_type, |
1927 | rss_hash_bits, rss_base_cpu, | |
1928 | rss_enable, tso_ipid_split_en, | |
1929 | ig_vlan_strip_en); | |
383ab92f VK |
1930 | spin_unlock(&enic->devcmd_lock); |
1931 | ||
1932 | return err; | |
1933 | } | |
1934 | ||
717258ba VK |
1935 | static int enic_set_rss_nic_cfg(struct enic *enic) |
1936 | { | |
1937 | struct device *dev = enic_get_dev(enic); | |
1938 | const u8 rss_default_cpu = 0; | |
1939 | const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | | |
1940 | NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | | |
1941 | NIC_CFG_RSS_HASH_TYPE_IPV6 | | |
1942 | NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; | |
1943 | const u8 rss_hash_bits = 7; | |
1944 | const u8 rss_base_cpu = 0; | |
1945 | u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); | |
1946 | ||
1947 | if (rss_enable) { | |
1948 | if (!enic_set_rsskey(enic)) { | |
1949 | if (enic_set_rsscpu(enic, rss_hash_bits)) { | |
1950 | rss_enable = 0; | |
1951 | dev_warn(dev, "RSS disabled, " | |
1952 | "Failed to set RSS cpu indirection table."); | |
1953 | } | |
1954 | } else { | |
1955 | rss_enable = 0; | |
1956 | dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); | |
1957 | } | |
1958 | } | |
1959 | ||
1960 | return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, | |
1961 | rss_hash_bits, rss_base_cpu, rss_enable); | |
f8cac14a VK |
1962 | } |
1963 | ||
01f2e4ea SF |
1964 | static void enic_reset(struct work_struct *work) |
1965 | { | |
1966 | struct enic *enic = container_of(work, struct enic, reset); | |
1967 | ||
1968 | if (!netif_running(enic->netdev)) | |
1969 | return; | |
1970 | ||
1971 | rtnl_lock(); | |
1972 | ||
383ab92f | 1973 | enic_dev_hang_notify(enic); |
01f2e4ea | 1974 | enic_stop(enic->netdev); |
99ef5639 | 1975 | enic_dev_hang_reset(enic); |
e0afe53f | 1976 | enic_reset_addr_lists(enic); |
01f2e4ea | 1977 | enic_init_vnic_resources(enic); |
717258ba | 1978 | enic_set_rss_nic_cfg(enic); |
f8cac14a | 1979 | enic_dev_set_ig_vlan_rewrite_mode(enic); |
01f2e4ea SF |
1980 | enic_open(enic->netdev); |
1981 | ||
1982 | rtnl_unlock(); | |
1983 | } | |
1984 | ||
1985 | static int enic_set_intr_mode(struct enic *enic) | |
1986 | { | |
717258ba | 1987 | unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); |
1cbb1a61 | 1988 | unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); |
01f2e4ea SF |
1989 | unsigned int i; |
1990 | ||
1991 | /* Set interrupt mode (INTx, MSI, MSI-X) depending | |
717258ba | 1992 | * on system capabilities. |
01f2e4ea SF |
1993 | * |
1994 | * Try MSI-X first | |
1995 | * | |
1996 | * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs | |
1997 | * (the second to last INTR is used for WQ/RQ errors) | |
1998 | * (the last INTR is used for notifications) | |
1999 | */ | |
2000 | ||
2001 | BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); | |
2002 | for (i = 0; i < n + m + 2; i++) | |
2003 | enic->msix_entry[i].entry = i; | |
2004 | ||
717258ba VK |
2005 | /* Use multiple RQs if RSS is enabled |
2006 | */ | |
2007 | ||
2008 | if (ENIC_SETTING(enic, RSS) && | |
2009 | enic->config.intr_mode < 1 && | |
01f2e4ea SF |
2010 | enic->rq_count >= n && |
2011 | enic->wq_count >= m && | |
2012 | enic->cq_count >= n + m && | |
717258ba | 2013 | enic->intr_count >= n + m + 2) { |
01f2e4ea | 2014 | |
717258ba | 2015 | if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { |
01f2e4ea | 2016 | |
717258ba VK |
2017 | enic->rq_count = n; |
2018 | enic->wq_count = m; | |
2019 | enic->cq_count = n + m; | |
2020 | enic->intr_count = n + m + 2; | |
01f2e4ea | 2021 | |
717258ba VK |
2022 | vnic_dev_set_intr_mode(enic->vdev, |
2023 | VNIC_DEV_INTR_MODE_MSIX); | |
2024 | ||
2025 | return 0; | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | if (enic->config.intr_mode < 1 && | |
2030 | enic->rq_count >= 1 && | |
2031 | enic->wq_count >= m && | |
2032 | enic->cq_count >= 1 + m && | |
2033 | enic->intr_count >= 1 + m + 2) { | |
2034 | if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { | |
2035 | ||
2036 | enic->rq_count = 1; | |
2037 | enic->wq_count = m; | |
2038 | enic->cq_count = 1 + m; | |
2039 | enic->intr_count = 1 + m + 2; | |
2040 | ||
2041 | vnic_dev_set_intr_mode(enic->vdev, | |
2042 | VNIC_DEV_INTR_MODE_MSIX); | |
2043 | ||
2044 | return 0; | |
2045 | } | |
01f2e4ea SF |
2046 | } |
2047 | ||
2048 | /* Next try MSI | |
2049 | * | |
2050 | * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR | |
2051 | */ | |
2052 | ||
2053 | if (enic->config.intr_mode < 2 && | |
2054 | enic->rq_count >= 1 && | |
2055 | enic->wq_count >= 1 && | |
2056 | enic->cq_count >= 2 && | |
2057 | enic->intr_count >= 1 && | |
2058 | !pci_enable_msi(enic->pdev)) { | |
2059 | ||
2060 | enic->rq_count = 1; | |
2061 | enic->wq_count = 1; | |
2062 | enic->cq_count = 2; | |
2063 | enic->intr_count = 1; | |
2064 | ||
2065 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); | |
2066 | ||
2067 | return 0; | |
2068 | } | |
2069 | ||
2070 | /* Next try INTx | |
2071 | * | |
2072 | * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs | |
2073 | * (the first INTR is used for WQ/RQ) | |
2074 | * (the second INTR is used for WQ/RQ errors) | |
2075 | * (the last INTR is used for notifications) | |
2076 | */ | |
2077 | ||
2078 | if (enic->config.intr_mode < 3 && | |
2079 | enic->rq_count >= 1 && | |
2080 | enic->wq_count >= 1 && | |
2081 | enic->cq_count >= 2 && | |
2082 | enic->intr_count >= 3) { | |
2083 | ||
2084 | enic->rq_count = 1; | |
2085 | enic->wq_count = 1; | |
2086 | enic->cq_count = 2; | |
2087 | enic->intr_count = 3; | |
2088 | ||
2089 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); | |
2090 | ||
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); | |
2095 | ||
2096 | return -EINVAL; | |
2097 | } | |
2098 | ||
2099 | static void enic_clear_intr_mode(struct enic *enic) | |
2100 | { | |
2101 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
2102 | case VNIC_DEV_INTR_MODE_MSIX: | |
2103 | pci_disable_msix(enic->pdev); | |
2104 | break; | |
2105 | case VNIC_DEV_INTR_MODE_MSI: | |
2106 | pci_disable_msi(enic->pdev); | |
2107 | break; | |
2108 | default: | |
2109 | break; | |
2110 | } | |
2111 | ||
2112 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); | |
2113 | } | |
2114 | ||
f8bd9091 SF |
2115 | static const struct net_device_ops enic_netdev_dynamic_ops = { |
2116 | .ndo_open = enic_open, | |
2117 | .ndo_stop = enic_stop, | |
2118 | .ndo_start_xmit = enic_hard_start_xmit, | |
f20530bc | 2119 | .ndo_get_stats64 = enic_get_stats, |
f8bd9091 | 2120 | .ndo_validate_addr = eth_validate_addr, |
319d7e84 RP |
2121 | .ndo_set_rx_mode = enic_set_rx_mode, |
2122 | .ndo_set_multicast_list = enic_set_rx_mode, | |
f8bd9091 SF |
2123 | .ndo_set_mac_address = enic_set_mac_address_dynamic, |
2124 | .ndo_change_mtu = enic_change_mtu, | |
2125 | .ndo_vlan_rx_register = enic_vlan_rx_register, | |
2126 | .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, | |
2127 | .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, | |
2128 | .ndo_tx_timeout = enic_tx_timeout, | |
2129 | .ndo_set_vf_port = enic_set_vf_port, | |
2130 | .ndo_get_vf_port = enic_get_vf_port, | |
0b1c00fc | 2131 | .ndo_set_vf_mac = enic_set_vf_mac, |
f8bd9091 SF |
2132 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2133 | .ndo_poll_controller = enic_poll_controller, | |
2134 | #endif | |
2135 | }; | |
2136 | ||
afe29f7a SH |
2137 | static const struct net_device_ops enic_netdev_ops = { |
2138 | .ndo_open = enic_open, | |
2139 | .ndo_stop = enic_stop, | |
00829823 | 2140 | .ndo_start_xmit = enic_hard_start_xmit, |
f20530bc | 2141 | .ndo_get_stats64 = enic_get_stats, |
afe29f7a | 2142 | .ndo_validate_addr = eth_validate_addr, |
f8bd9091 | 2143 | .ndo_set_mac_address = enic_set_mac_address, |
319d7e84 RP |
2144 | .ndo_set_rx_mode = enic_set_rx_mode, |
2145 | .ndo_set_multicast_list = enic_set_rx_mode, | |
afe29f7a SH |
2146 | .ndo_change_mtu = enic_change_mtu, |
2147 | .ndo_vlan_rx_register = enic_vlan_rx_register, | |
2148 | .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, | |
2149 | .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, | |
2150 | .ndo_tx_timeout = enic_tx_timeout, | |
2151 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2152 | .ndo_poll_controller = enic_poll_controller, | |
2153 | #endif | |
2154 | }; | |
2155 | ||
2fdba388 | 2156 | static void enic_dev_deinit(struct enic *enic) |
6fdfa970 | 2157 | { |
717258ba VK |
2158 | unsigned int i; |
2159 | ||
2160 | for (i = 0; i < enic->rq_count; i++) | |
2161 | netif_napi_del(&enic->napi[i]); | |
2162 | ||
6fdfa970 SF |
2163 | enic_free_vnic_resources(enic); |
2164 | enic_clear_intr_mode(enic); | |
2165 | } | |
2166 | ||
2fdba388 | 2167 | static int enic_dev_init(struct enic *enic) |
6fdfa970 | 2168 | { |
a7a79deb | 2169 | struct device *dev = enic_get_dev(enic); |
6fdfa970 | 2170 | struct net_device *netdev = enic->netdev; |
717258ba | 2171 | unsigned int i; |
6fdfa970 SF |
2172 | int err; |
2173 | ||
2174 | /* Get vNIC configuration | |
2175 | */ | |
2176 | ||
2177 | err = enic_get_vnic_config(enic); | |
2178 | if (err) { | |
a7a79deb | 2179 | dev_err(dev, "Get vNIC configuration failed, aborting\n"); |
6fdfa970 SF |
2180 | return err; |
2181 | } | |
2182 | ||
2183 | /* Get available resource counts | |
2184 | */ | |
2185 | ||
2186 | enic_get_res_counts(enic); | |
2187 | ||
2188 | /* Set interrupt mode based on resource counts and system | |
2189 | * capabilities | |
2190 | */ | |
2191 | ||
2192 | err = enic_set_intr_mode(enic); | |
2193 | if (err) { | |
a7a79deb VK |
2194 | dev_err(dev, "Failed to set intr mode based on resource " |
2195 | "counts and system capabilities, aborting\n"); | |
6fdfa970 SF |
2196 | return err; |
2197 | } | |
2198 | ||
2199 | /* Allocate and configure vNIC resources | |
2200 | */ | |
2201 | ||
2202 | err = enic_alloc_vnic_resources(enic); | |
2203 | if (err) { | |
a7a79deb | 2204 | dev_err(dev, "Failed to alloc vNIC resources, aborting\n"); |
6fdfa970 SF |
2205 | goto err_out_free_vnic_resources; |
2206 | } | |
2207 | ||
2208 | enic_init_vnic_resources(enic); | |
2209 | ||
717258ba | 2210 | err = enic_set_rss_nic_cfg(enic); |
6fdfa970 | 2211 | if (err) { |
a7a79deb | 2212 | dev_err(dev, "Failed to config nic, aborting\n"); |
6fdfa970 SF |
2213 | goto err_out_free_vnic_resources; |
2214 | } | |
2215 | ||
2216 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
2217 | default: | |
717258ba | 2218 | netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); |
6fdfa970 SF |
2219 | break; |
2220 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
2221 | for (i = 0; i < enic->rq_count; i++) |
2222 | netif_napi_add(netdev, &enic->napi[i], | |
2223 | enic_poll_msix, 64); | |
6fdfa970 SF |
2224 | break; |
2225 | } | |
2226 | ||
2227 | return 0; | |
2228 | ||
2229 | err_out_free_vnic_resources: | |
2230 | enic_clear_intr_mode(enic); | |
2231 | enic_free_vnic_resources(enic); | |
2232 | ||
2233 | return err; | |
2234 | } | |
2235 | ||
27e6c7d3 SF |
2236 | static void enic_iounmap(struct enic *enic) |
2237 | { | |
2238 | unsigned int i; | |
2239 | ||
2240 | for (i = 0; i < ARRAY_SIZE(enic->bar); i++) | |
2241 | if (enic->bar[i].vaddr) | |
2242 | iounmap(enic->bar[i].vaddr); | |
2243 | } | |
2244 | ||
01f2e4ea SF |
2245 | static int __devinit enic_probe(struct pci_dev *pdev, |
2246 | const struct pci_device_id *ent) | |
2247 | { | |
a7a79deb | 2248 | struct device *dev = &pdev->dev; |
01f2e4ea SF |
2249 | struct net_device *netdev; |
2250 | struct enic *enic; | |
2251 | int using_dac = 0; | |
2252 | unsigned int i; | |
2253 | int err; | |
2254 | ||
01f2e4ea SF |
2255 | /* Allocate net device structure and initialize. Private |
2256 | * instance data is initialized to zero. | |
2257 | */ | |
2258 | ||
2259 | netdev = alloc_etherdev(sizeof(struct enic)); | |
2260 | if (!netdev) { | |
a7a79deb | 2261 | pr_err("Etherdev alloc failed, aborting\n"); |
01f2e4ea SF |
2262 | return -ENOMEM; |
2263 | } | |
2264 | ||
01f2e4ea SF |
2265 | pci_set_drvdata(pdev, netdev); |
2266 | ||
2267 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2268 | ||
2269 | enic = netdev_priv(netdev); | |
2270 | enic->netdev = netdev; | |
2271 | enic->pdev = pdev; | |
2272 | ||
2273 | /* Setup PCI resources | |
2274 | */ | |
2275 | ||
29046f9b | 2276 | err = pci_enable_device_mem(pdev); |
01f2e4ea | 2277 | if (err) { |
a7a79deb | 2278 | dev_err(dev, "Cannot enable PCI device, aborting\n"); |
01f2e4ea SF |
2279 | goto err_out_free_netdev; |
2280 | } | |
2281 | ||
2282 | err = pci_request_regions(pdev, DRV_NAME); | |
2283 | if (err) { | |
a7a79deb | 2284 | dev_err(dev, "Cannot request PCI regions, aborting\n"); |
01f2e4ea SF |
2285 | goto err_out_disable_device; |
2286 | } | |
2287 | ||
2288 | pci_set_master(pdev); | |
2289 | ||
2290 | /* Query PCI controller on system for DMA addressing | |
2291 | * limitation for the device. Try 40-bit first, and | |
2292 | * fail to 32-bit. | |
2293 | */ | |
2294 | ||
50cf156a | 2295 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); |
01f2e4ea | 2296 | if (err) { |
284901a9 | 2297 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
01f2e4ea | 2298 | if (err) { |
a7a79deb | 2299 | dev_err(dev, "No usable DMA configuration, aborting\n"); |
01f2e4ea SF |
2300 | goto err_out_release_regions; |
2301 | } | |
284901a9 | 2302 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
01f2e4ea | 2303 | if (err) { |
a7a79deb VK |
2304 | dev_err(dev, "Unable to obtain %u-bit DMA " |
2305 | "for consistent allocations, aborting\n", 32); | |
01f2e4ea SF |
2306 | goto err_out_release_regions; |
2307 | } | |
2308 | } else { | |
50cf156a | 2309 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); |
01f2e4ea | 2310 | if (err) { |
a7a79deb VK |
2311 | dev_err(dev, "Unable to obtain %u-bit DMA " |
2312 | "for consistent allocations, aborting\n", 40); | |
01f2e4ea SF |
2313 | goto err_out_release_regions; |
2314 | } | |
2315 | using_dac = 1; | |
2316 | } | |
2317 | ||
27e6c7d3 | 2318 | /* Map vNIC resources from BAR0-5 |
01f2e4ea SF |
2319 | */ |
2320 | ||
27e6c7d3 SF |
2321 | for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { |
2322 | if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) | |
2323 | continue; | |
2324 | enic->bar[i].len = pci_resource_len(pdev, i); | |
2325 | enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); | |
2326 | if (!enic->bar[i].vaddr) { | |
a7a79deb | 2327 | dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); |
27e6c7d3 SF |
2328 | err = -ENODEV; |
2329 | goto err_out_iounmap; | |
2330 | } | |
2331 | enic->bar[i].bus_addr = pci_resource_start(pdev, i); | |
01f2e4ea SF |
2332 | } |
2333 | ||
2334 | /* Register vNIC device | |
2335 | */ | |
2336 | ||
27e6c7d3 SF |
2337 | enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, |
2338 | ARRAY_SIZE(enic->bar)); | |
01f2e4ea | 2339 | if (!enic->vdev) { |
a7a79deb | 2340 | dev_err(dev, "vNIC registration failed, aborting\n"); |
01f2e4ea SF |
2341 | err = -ENODEV; |
2342 | goto err_out_iounmap; | |
2343 | } | |
2344 | ||
2345 | /* Issue device open to get device in known state | |
2346 | */ | |
2347 | ||
2348 | err = enic_dev_open(enic); | |
2349 | if (err) { | |
a7a79deb | 2350 | dev_err(dev, "vNIC dev open failed, aborting\n"); |
01f2e4ea SF |
2351 | goto err_out_vnic_unregister; |
2352 | } | |
2353 | ||
69161425 VK |
2354 | /* Setup devcmd lock |
2355 | */ | |
2356 | ||
2357 | spin_lock_init(&enic->devcmd_lock); | |
2358 | ||
2359 | /* | |
2360 | * Set ingress vlan rewrite mode before vnic initialization | |
2361 | */ | |
2362 | ||
2363 | err = enic_dev_set_ig_vlan_rewrite_mode(enic); | |
2364 | if (err) { | |
2365 | dev_err(dev, | |
2366 | "Failed to set ingress vlan rewrite mode, aborting.\n"); | |
2367 | goto err_out_dev_close; | |
2368 | } | |
2369 | ||
01f2e4ea SF |
2370 | /* Issue device init to initialize the vnic-to-switch link. |
2371 | * We'll start with carrier off and wait for link UP | |
2372 | * notification later to turn on carrier. We don't need | |
2373 | * to wait here for the vnic-to-switch link initialization | |
2374 | * to complete; link UP notification is the indication that | |
2375 | * the process is complete. | |
2376 | */ | |
2377 | ||
2378 | netif_carrier_off(netdev); | |
2379 | ||
a7a79deb VK |
2380 | /* Do not call dev_init for a dynamic vnic. |
2381 | * For a dynamic vnic, init_prov_info will be | |
2382 | * called later by an upper layer. | |
2383 | */ | |
2384 | ||
f8bd9091 SF |
2385 | if (!enic_is_dynamic(enic)) { |
2386 | err = vnic_dev_init(enic->vdev, 0); | |
2387 | if (err) { | |
a7a79deb | 2388 | dev_err(dev, "vNIC dev init failed, aborting\n"); |
f8bd9091 SF |
2389 | goto err_out_dev_close; |
2390 | } | |
01f2e4ea SF |
2391 | } |
2392 | ||
6fdfa970 | 2393 | err = enic_dev_init(enic); |
01f2e4ea | 2394 | if (err) { |
a7a79deb | 2395 | dev_err(dev, "Device initialization failed, aborting\n"); |
01f2e4ea SF |
2396 | goto err_out_dev_close; |
2397 | } | |
2398 | ||
383ab92f | 2399 | /* Setup notification timer, HW reset task, and wq locks |
01f2e4ea SF |
2400 | */ |
2401 | ||
2402 | init_timer(&enic->notify_timer); | |
2403 | enic->notify_timer.function = enic_notify_timer; | |
2404 | enic->notify_timer.data = (unsigned long)enic; | |
2405 | ||
2406 | INIT_WORK(&enic->reset, enic_reset); | |
c97c894d | 2407 | INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); |
01f2e4ea SF |
2408 | |
2409 | for (i = 0; i < enic->wq_count; i++) | |
2410 | spin_lock_init(&enic->wq_lock[i]); | |
2411 | ||
01f2e4ea SF |
2412 | /* Register net device |
2413 | */ | |
2414 | ||
2415 | enic->port_mtu = enic->config.mtu; | |
2416 | (void)enic_change_mtu(netdev, enic->port_mtu); | |
2417 | ||
2418 | err = enic_set_mac_addr(netdev, enic->mac_addr); | |
2419 | if (err) { | |
a7a79deb | 2420 | dev_err(dev, "Invalid MAC address, aborting\n"); |
6fdfa970 | 2421 | goto err_out_dev_deinit; |
01f2e4ea SF |
2422 | } |
2423 | ||
7c844599 SF |
2424 | enic->tx_coalesce_usecs = enic->config.intr_timer_usec; |
2425 | enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; | |
2426 | ||
f8bd9091 SF |
2427 | if (enic_is_dynamic(enic)) |
2428 | netdev->netdev_ops = &enic_netdev_dynamic_ops; | |
2429 | else | |
2430 | netdev->netdev_ops = &enic_netdev_ops; | |
2431 | ||
01f2e4ea SF |
2432 | netdev->watchdog_timeo = 2 * HZ; |
2433 | netdev->ethtool_ops = &enic_ethtool_ops; | |
01f2e4ea | 2434 | |
73c1ea9b | 2435 | netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; |
1825aca6 VK |
2436 | if (ENIC_SETTING(enic, LOOP)) { |
2437 | netdev->features &= ~NETIF_F_HW_VLAN_TX; | |
2438 | enic->loop_enable = 1; | |
2439 | enic->loop_tag = enic->config.loop_tag; | |
2440 | dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); | |
2441 | } | |
01f2e4ea | 2442 | if (ENIC_SETTING(enic, TXCSUM)) |
5ec8f9b8 | 2443 | netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; |
01f2e4ea | 2444 | if (ENIC_SETTING(enic, TSO)) |
5ec8f9b8 | 2445 | netdev->hw_features |= NETIF_F_TSO | |
01f2e4ea | 2446 | NETIF_F_TSO6 | NETIF_F_TSO_ECN; |
5ec8f9b8 MM |
2447 | if (ENIC_SETTING(enic, RXCSUM)) |
2448 | netdev->hw_features |= NETIF_F_RXCSUM; | |
2449 | ||
2450 | netdev->features |= netdev->hw_features; | |
2451 | ||
01f2e4ea SF |
2452 | if (using_dac) |
2453 | netdev->features |= NETIF_F_HIGHDMA; | |
2454 | ||
01f2e4ea SF |
2455 | err = register_netdev(netdev); |
2456 | if (err) { | |
a7a79deb | 2457 | dev_err(dev, "Cannot register net device, aborting\n"); |
6fdfa970 | 2458 | goto err_out_dev_deinit; |
01f2e4ea SF |
2459 | } |
2460 | ||
2461 | return 0; | |
2462 | ||
6fdfa970 SF |
2463 | err_out_dev_deinit: |
2464 | enic_dev_deinit(enic); | |
01f2e4ea SF |
2465 | err_out_dev_close: |
2466 | vnic_dev_close(enic->vdev); | |
2467 | err_out_vnic_unregister: | |
01f2e4ea SF |
2468 | vnic_dev_unregister(enic->vdev); |
2469 | err_out_iounmap: | |
2470 | enic_iounmap(enic); | |
2471 | err_out_release_regions: | |
2472 | pci_release_regions(pdev); | |
2473 | err_out_disable_device: | |
2474 | pci_disable_device(pdev); | |
2475 | err_out_free_netdev: | |
2476 | pci_set_drvdata(pdev, NULL); | |
2477 | free_netdev(netdev); | |
2478 | ||
2479 | return err; | |
2480 | } | |
2481 | ||
2482 | static void __devexit enic_remove(struct pci_dev *pdev) | |
2483 | { | |
2484 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2485 | ||
2486 | if (netdev) { | |
2487 | struct enic *enic = netdev_priv(netdev); | |
2488 | ||
23f333a2 | 2489 | cancel_work_sync(&enic->reset); |
c97c894d | 2490 | cancel_work_sync(&enic->change_mtu_work); |
01f2e4ea | 2491 | unregister_netdev(netdev); |
6fdfa970 | 2492 | enic_dev_deinit(enic); |
01f2e4ea | 2493 | vnic_dev_close(enic->vdev); |
01f2e4ea SF |
2494 | vnic_dev_unregister(enic->vdev); |
2495 | enic_iounmap(enic); | |
2496 | pci_release_regions(pdev); | |
2497 | pci_disable_device(pdev); | |
2498 | pci_set_drvdata(pdev, NULL); | |
2499 | free_netdev(netdev); | |
2500 | } | |
2501 | } | |
2502 | ||
2503 | static struct pci_driver enic_driver = { | |
2504 | .name = DRV_NAME, | |
2505 | .id_table = enic_id_table, | |
2506 | .probe = enic_probe, | |
2507 | .remove = __devexit_p(enic_remove), | |
2508 | }; | |
2509 | ||
2510 | static int __init enic_init_module(void) | |
2511 | { | |
a7a79deb | 2512 | pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); |
01f2e4ea SF |
2513 | |
2514 | return pci_register_driver(&enic_driver); | |
2515 | } | |
2516 | ||
2517 | static void __exit enic_cleanup_module(void) | |
2518 | { | |
2519 | pci_unregister_driver(&enic_driver); | |
2520 | } | |
2521 | ||
2522 | module_init(enic_init_module); | |
2523 | module_exit(enic_cleanup_module); |