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ixgbe: further flow director performance optimizations
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ixgbe / ixgbe_sriov.c
CommitLineData
17367270
GR		 1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
3a338cbb 4 Copyright(c) 1999 - 2010 Intel Corporation.
17367270
GR		 5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
17367270
GR		 28#include <linux/types.h>
29#include <linux/module.h>
30#include <linux/pci.h>
31#include <linux/netdevice.h>
32#include <linux/vmalloc.h>
33#include <linux/string.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/tcp.h>
37#include <linux/ipv6.h>
38#ifdef NETIF_F_HW_VLAN_TX
39#include <linux/if_vlan.h>
40#endif
41
42#include "ixgbe.h"
43
44#include "ixgbe_sriov.h"
45
5d5b7c39
ET		 46static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
47 int entries, u16 *hash_list, u32 vf)
17367270
GR		 48{
49 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
8a07a22d 50 struct ixgbe_hw *hw = &adapter->hw;
17367270 51 int i;
8a07a22d
GR		 52 u32 vector_bit;
53 u32 vector_reg;
54 u32 mta_reg;
17367270
GR		 55
56 /* only so many hash values supported */
57 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
58
59 /*
60 * salt away the number of multi cast addresses assigned
61 * to this VF for later use to restore when the PF multi cast
62 * list changes
63 */
64 vfinfo->num_vf_mc_hashes = entries;
65
66 /*
67 * VFs are limited to using the MTA hash table for their multicast
68 * addresses
69 */
70 for (i = 0; i < entries; i++) {
e81a1ba8 71 vfinfo->vf_mc_hashes[i] = hash_list[i];
17367270
GR		 72 }
73
8a07a22d
GR		 74 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
75 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
76 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
77 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
78 mta_reg |= (1 << vector_bit);
79 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
80 }
17367270
GR		 81
82 return 0;
83}
84
85void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
86{
87 struct ixgbe_hw *hw = &adapter->hw;
88 struct vf_data_storage *vfinfo;
89 int i, j;
90 u32 vector_bit;
91 u32 vector_reg;
92 u32 mta_reg;
93
94 for (i = 0; i < adapter->num_vfs; i++) {
95 vfinfo = &adapter->vfinfo[i];
96 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
97 hw->addr_ctrl.mta_in_use++;
98 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
99 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
100 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
101 mta_reg |= (1 << vector_bit);
102 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
103 }
104 }
105}
106
5d5b7c39
ET		 107static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
108 u32 vf)
17367270 109{
17367270
GR		 110 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
111}
112
113
5d5b7c39 114static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
17367270
GR		 115{
116 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
f0412776 117 vmolr |= (IXGBE_VMOLR_ROMPE |
17367270
GR		 118 IXGBE_VMOLR_ROPE |
119 IXGBE_VMOLR_BAM);
f0412776
GR		 120 if (aupe)
121 vmolr |= IXGBE_VMOLR_AUPE;
122 else
123 vmolr &= ~IXGBE_VMOLR_AUPE;
17367270
GR		 124 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
125}
126
7f01648a
GR		 127static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf)
128{
129 struct ixgbe_hw *hw = &adapter->hw;
130
131 if (vid)
132 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf),
133 (vid | IXGBE_VMVIR_VLANA_DEFAULT));
134 else
135 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
136}
137
5d5b7c39 138static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
17367270
GR		 139{
140 struct ixgbe_hw *hw = &adapter->hw;
2850062a 141 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
17367270
GR		 142
143 /* reset offloads to defaults */
7f01648a
GR		 144 if (adapter->vfinfo[vf].pf_vlan) {
145 ixgbe_set_vf_vlan(adapter, true,
146 adapter->vfinfo[vf].pf_vlan, vf);
147 ixgbe_set_vmvir(adapter,
148 (adapter->vfinfo[vf].pf_vlan |
149 (adapter->vfinfo[vf].pf_qos <<
150 VLAN_PRIO_SHIFT)), vf);
151 ixgbe_set_vmolr(hw, vf, false);
152 } else {
153 ixgbe_set_vmvir(adapter, 0, vf);
154 ixgbe_set_vmolr(hw, vf, true);
155 }
17367270
GR		 156
157 /* reset multicast table array for vf */
158 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
159
160 /* Flush and reset the mta with the new values */
161 ixgbe_set_rx_mode(adapter->netdev);
162
2850062a 163 hw->mac.ops.clear_rar(hw, rar_entry);
17367270
GR		 164}
165
5d5b7c39
ET		 166static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
167 int vf, unsigned char *mac_addr)
17367270
GR		 168{
169 struct ixgbe_hw *hw = &adapter->hw;
2850062a 170 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
17367270
GR		 171
172 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
2850062a 173 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
17367270
GR		 174
175 return 0;
176}
177
178int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
179{
180 unsigned char vf_mac_addr[6];
c60fbb00 181 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
17367270
GR		 182 unsigned int vfn = (event_mask & 0x3f);
183
184 bool enable = ((event_mask & 0x10000000U) != 0);
185
186 if (enable) {
187 random_ether_addr(vf_mac_addr);
396e799c
ET		 188 e_info(probe, "IOV: VF %d is enabled MAC %pM\n",
189 vfn, vf_mac_addr);
17367270
GR		 190 /*
191 * Store away the VF "permananet" MAC address, it will ask
192 * for it later.
193 */
194 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
195 }
196
197 return 0;
198}
199
5d5b7c39 200static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
17367270
GR		 201{
202 struct ixgbe_hw *hw = &adapter->hw;
203 u32 reg;
204 u32 reg_offset, vf_shift;
205
206 vf_shift = vf % 32;
207 reg_offset = vf / 32;
208
209 /* enable transmit and receive for vf */
210 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
211 reg |= (reg | (1 << vf_shift));
212 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
213
214 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
215 reg |= (reg | (1 << vf_shift));
216 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
217
a985b6c3
GR		 218 /* Enable counting of spoofed packets in the SSVPC register */
219 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
220 reg |= (1 << vf_shift);
221 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
222
17367270
GR		 223 ixgbe_vf_reset_event(adapter, vf);
224}
225
226static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
227{
228 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
229 u32 msgbuf[mbx_size];
230 struct ixgbe_hw *hw = &adapter->hw;
231 s32 retval;
232 int entries;
233 u16 *hash_list;
234 int add, vid;
d3306c29 235 u8 *new_mac;
17367270
GR		 236
237 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
238
239 if (retval)
849c4542 240 pr_err("Error receiving message from VF\n");
17367270
GR		 241
242 /* this is a message we already processed, do nothing */
243 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
244 return retval;
245
246 /*
247 * until the vf completes a virtual function reset it should not be
248 * allowed to start any configuration.
249 */
250
251 if (msgbuf[0] == IXGBE_VF_RESET) {
252 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
d3306c29 253 new_mac = (u8 *)(&msgbuf[1]);
396e799c 254 e_info(probe, "VF Reset msg received from vf %d\n", vf);
17367270
GR		 255 adapter->vfinfo[vf].clear_to_send = false;
256 ixgbe_vf_reset_msg(adapter, vf);
257 adapter->vfinfo[vf].clear_to_send = true;
258
d3306c29
GR		 259 if (is_valid_ether_addr(new_mac) &&
260 !adapter->vfinfo[vf].pf_set_mac)
261 ixgbe_set_vf_mac(adapter, vf, vf_mac);
262 else
263 ixgbe_set_vf_mac(adapter,
264 vf, adapter->vfinfo[vf].vf_mac_addresses);
265
17367270
GR		 266 /* reply to reset with ack and vf mac address */
267 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
d3306c29 268 memcpy(new_mac, vf_mac, IXGBE_ETH_LENGTH_OF_ADDRESS);
17367270
GR		 269 /*
270 * Piggyback the multicast filter type so VF can compute the
271 * correct vectors
272 */
273 msgbuf[3] = hw->mac.mc_filter_type;
274 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
275
276 return retval;
277 }
278
279 if (!adapter->vfinfo[vf].clear_to_send) {
280 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
281 ixgbe_write_mbx(hw, msgbuf, 1, vf);
282 return retval;
283 }
284
285 switch ((msgbuf[0] & 0xFFFF)) {
286 case IXGBE_VF_SET_MAC_ADDR:
d3306c29
GR		 287 new_mac = ((u8 *)(&msgbuf[1]));
288 if (is_valid_ether_addr(new_mac) &&
289 !adapter->vfinfo[vf].pf_set_mac) {
290 ixgbe_set_vf_mac(adapter, vf, new_mac);
291 } else if (memcmp(adapter->vfinfo[vf].vf_mac_addresses,
292 new_mac, ETH_ALEN)) {
293 e_warn(drv, "VF %d attempted to override "
294 "administratively set MAC address\nReload "
295 "the VF driver to resume operations\n", vf);
296 retval = -1;
17367270
GR		 297 }
298 break;
299 case IXGBE_VF_SET_MULTICAST:
300 entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
301 >> IXGBE_VT_MSGINFO_SHIFT;
302 hash_list = (u16 *)&msgbuf[1];
303 retval = ixgbe_set_vf_multicasts(adapter, entries,
304 hash_list, vf);
305 break;
306 case IXGBE_VF_SET_LPE:
307 WARN_ON((msgbuf[0] & 0xFFFF) == IXGBE_VF_SET_LPE);
308 break;
309 case IXGBE_VF_SET_VLAN:
310 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
311 >> IXGBE_VT_MSGINFO_SHIFT;
312 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
d3306c29
GR		 313 if (adapter->vfinfo[vf].pf_vlan) {
314 e_warn(drv, "VF %d attempted to override "
315 "administratively set VLAN configuration\n"
316 "Reload the VF driver to resume operations\n",
317 vf);
318 retval = -1;
319 } else {
320 retval = ixgbe_set_vf_vlan(adapter, add, vid, vf);
321 }
17367270
GR		 322 break;
323 default:
396e799c 324 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
17367270
GR		 325 retval = IXGBE_ERR_MBX;
326 break;
327 }
328
329 /* notify the VF of the results of what it sent us */
330 if (retval)
331 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
332 else
333 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
334
335 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
336
337 ixgbe_write_mbx(hw, msgbuf, 1, vf);
338
339 return retval;
340}
341
342static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
343{
344 struct ixgbe_hw *hw = &adapter->hw;
345 u32 msg = IXGBE_VT_MSGTYPE_NACK;
346
347 /* if device isn't clear to send it shouldn't be reading either */
348 if (!adapter->vfinfo[vf].clear_to_send)
349 ixgbe_write_mbx(hw, &msg, 1, vf);
350}
351
352void ixgbe_msg_task(struct ixgbe_adapter *adapter)
353{
354 struct ixgbe_hw *hw = &adapter->hw;
355 u32 vf;
356
357 for (vf = 0; vf < adapter->num_vfs; vf++) {
358 /* process any reset requests */
359 if (!ixgbe_check_for_rst(hw, vf))
360 ixgbe_vf_reset_event(adapter, vf);
361
362 /* process any messages pending */
363 if (!ixgbe_check_for_msg(hw, vf))
364 ixgbe_rcv_msg_from_vf(adapter, vf);
365
366 /* process any acks */
367 if (!ixgbe_check_for_ack(hw, vf))
368 ixgbe_rcv_ack_from_vf(adapter, vf);
369 }
370}
371
767081ad
GR		 372void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
373{
374 struct ixgbe_hw *hw = &adapter->hw;
375
376 /* disable transmit and receive for all vfs */
377 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
378 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
379
380 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
381 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
382}
383
384void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
385{
386 struct ixgbe_hw *hw = &adapter->hw;
387 u32 ping;
388 int i;
389
390 for (i = 0 ; i < adapter->num_vfs; i++) {
391 ping = IXGBE_PF_CONTROL_MSG;
392 if (adapter->vfinfo[i].clear_to_send)
393 ping |= IXGBE_VT_MSGTYPE_CTS;
394 ixgbe_write_mbx(hw, &ping, 1, i);
395 }
396}
397
7f01648a
GR		 398int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
399{
400 struct ixgbe_adapter *adapter = netdev_priv(netdev);
401 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
402 return -EINVAL;
403 adapter->vfinfo[vf].pf_set_mac = true;
404 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
405 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
406 " change effective.");
407 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
408 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
409 " but the PF device is not up.\n");
410 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
411 " attempting to use the VF device.\n");
412 }
413 return ixgbe_set_vf_mac(adapter, vf, mac);
414}
415
416int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
417{
418 int err = 0;
419 struct ixgbe_adapter *adapter = netdev_priv(netdev);
a985b6c3 420 struct ixgbe_hw *hw = &adapter->hw;
7f01648a
GR		 421
422 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
423 return -EINVAL;
424 if (vlan || qos) {
425 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
426 if (err)
427 goto out;
428 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
a985b6c3
GR		 429 ixgbe_set_vmolr(hw, vf, false);
430 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
7f01648a
GR		 431 adapter->vfinfo[vf].pf_vlan = vlan;
432 adapter->vfinfo[vf].pf_qos = qos;
433 dev_info(&adapter->pdev->dev,
434 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
435 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
436 dev_warn(&adapter->pdev->dev,
437 "The VF VLAN has been set,"
438 " but the PF device is not up.\n");
439 dev_warn(&adapter->pdev->dev,
440 "Bring the PF device up before"
441 " attempting to use the VF device.\n");
442 }
443 } else {
444 err = ixgbe_set_vf_vlan(adapter, false,
445 adapter->vfinfo[vf].pf_vlan, vf);
446 ixgbe_set_vmvir(adapter, vlan, vf);
a985b6c3
GR		 447 ixgbe_set_vmolr(hw, vf, true);
448 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
7f01648a
GR		 449 adapter->vfinfo[vf].pf_vlan = 0;
450 adapter->vfinfo[vf].pf_qos = 0;
451 }
452out:
453 return err;
454}
455
456int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
457{
458 return -EOPNOTSUPP;
459}
460
461int ixgbe_ndo_get_vf_config(struct net_device *netdev,
462 int vf, struct ifla_vf_info *ivi)
463{
464 struct ixgbe_adapter *adapter = netdev_priv(netdev);
465 if (vf >= adapter->num_vfs)
466 return -EINVAL;
467 ivi->vf = vf;
468 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
469 ivi->tx_rate = 0;
470 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
471 ivi->qos = adapter->vfinfo[vf].pf_qos;
472 return 0;
473}
kernel source for telekom puls (alcatel/mediatek)