1/******************************************************************************
2
3 Copyright (c) 2001-2017, Intel Corporation
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
11
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
15
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
31
32******************************************************************************/
33/*$FreeBSD: stable/11/sys/dev/ixgbe/if_ixv.c 320897 2017-07-11 21:25:07Z erj $*/
34
35
36#ifndef IXGBE_STANDALONE_BUILD
37#include "opt_inet.h"
38#include "opt_inet6.h"
39#endif
40
41#include "ixgbe.h"
42
43/************************************************************************
44 * Driver version
45 ************************************************************************/
46char ixv_driver_version[] = "1.5.13-k";
47
48/************************************************************************
49 * PCI Device ID Table
50 *
51 * Used by probe to select devices to load on
52 * Last field stores an index into ixv_strings
53 * Last entry must be all 0s
54 *
55 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index }
56 ************************************************************************/
57static ixgbe_vendor_info_t ixv_vendor_info_array[] =
58{
59 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_82599_VF, 0, 0, 0},
60 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X540_VF, 0, 0, 0},
61 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550_VF, 0, 0, 0},
62 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_X_VF, 0, 0, 0},
63 {IXGBE_INTEL_VENDOR_ID, IXGBE_DEV_ID_X550EM_A_VF, 0, 0, 0},
64 /* required last entry */
65 {0, 0, 0, 0, 0}
66};
67
68/************************************************************************
69 * Table of branding strings
70 ************************************************************************/
71static char *ixv_strings[] = {
72 "Intel(R) PRO/10GbE Virtual Function Network Driver"
73};
74
75/************************************************************************
76 * Function prototypes
77 ************************************************************************/
78static int ixv_probe(device_t);
79static int ixv_attach(device_t);
80static int ixv_detach(device_t);
81static int ixv_shutdown(device_t);
82static int ixv_ioctl(struct ifnet *, u_long, caddr_t);
83static void ixv_init(void *);
84static void ixv_init_locked(struct adapter *);
85static void ixv_stop(void *);
86static uint64_t ixv_get_counter(struct ifnet *, ift_counter);
87static void ixv_init_device_features(struct adapter *);
88static void ixv_media_status(struct ifnet *, struct ifmediareq *);
89static int ixv_media_change(struct ifnet *);
90static int ixv_allocate_pci_resources(struct adapter *);
91static int ixv_allocate_msix(struct adapter *);
92static int ixv_configure_interrupts(struct adapter *);
93static void ixv_free_pci_resources(struct adapter *);
94static void ixv_local_timer(void *);
95static void ixv_setup_interface(device_t, struct adapter *);
96
97static void ixv_initialize_transmit_units(struct adapter *);
98static void ixv_initialize_receive_units(struct adapter *);
99static void ixv_initialize_rss_mapping(struct adapter *);
100static void ixv_check_link(struct adapter *);
101
102static void ixv_enable_intr(struct adapter *);
103static void ixv_disable_intr(struct adapter *);
104static void ixv_set_multi(struct adapter *);
105static void ixv_update_link_status(struct adapter *);
106static int ixv_sysctl_debug(SYSCTL_HANDLER_ARGS);
107static void ixv_set_ivar(struct adapter *, u8, u8, s8);
108static void ixv_configure_ivars(struct adapter *);
109static u8 *ixv_mc_array_itr(struct ixgbe_hw *, u8 **, u32 *);
110
111static void ixv_setup_vlan_support(struct adapter *);
112static void ixv_register_vlan(void *, struct ifnet *, u16);
113static void ixv_unregister_vlan(void *, struct ifnet *, u16);
114
115static void ixv_save_stats(struct adapter *);
116static void ixv_init_stats(struct adapter *);
117static void ixv_update_stats(struct adapter *);
118static void ixv_add_stats_sysctls(struct adapter *);
119static void ixv_set_sysctl_value(struct adapter *, const char *,
120 const char *, int *, int);
121
122/* The MSI-X Interrupt handlers */
123static void ixv_msix_que(void *);
124static void ixv_msix_mbx(void *);
125
126/* Deferred interrupt tasklets */
127static void ixv_handle_que(void *, int);
128static void ixv_handle_link(void *, int);
129
130/************************************************************************
131 * FreeBSD Device Interface Entry Points
132 ************************************************************************/
133static device_method_t ixv_methods[] = {
134 /* Device interface */
135 DEVMETHOD(device_probe, ixv_probe),
136 DEVMETHOD(device_attach, ixv_attach),
137 DEVMETHOD(device_detach, ixv_detach),
138 DEVMETHOD(device_shutdown, ixv_shutdown),
139 DEVMETHOD_END
140};
141
142static driver_t ixv_driver = {
143 "ixv", ixv_methods, sizeof(struct adapter),
144};
145
146devclass_t ixv_devclass;
147DRIVER_MODULE(ixv, pci, ixv_driver, ixv_devclass, 0, 0);
148MODULE_DEPEND(ixv, pci, 1, 1, 1);
149MODULE_DEPEND(ixv, ether, 1, 1, 1);
150MODULE_DEPEND(ixv, netmap, 1, 1, 1);
151
152/*
153 * TUNEABLE PARAMETERS:
154 */
155
156/* Number of Queues - do not exceed MSI-X vectors - 1 */
157static int ixv_num_queues = 1;
158TUNABLE_INT("hw.ixv.num_queues", &ixv_num_queues);
159
160/*
161 * AIM: Adaptive Interrupt Moderation
162 * which means that the interrupt rate
163 * is varied over time based on the
164 * traffic for that interrupt vector
165 */
166static int ixv_enable_aim = FALSE;
167TUNABLE_INT("hw.ixv.enable_aim", &ixv_enable_aim);
168
169/* How many packets rxeof tries to clean at a time */
170static int ixv_rx_process_limit = 256;
171TUNABLE_INT("hw.ixv.rx_process_limit", &ixv_rx_process_limit);
172
173/* How many packets txeof tries to clean at a time */

--- 9 unchanged lines hidden (view full) ---

183 * the header into a separate mbuf from the payload,
184 * it can be a performance win in some workloads, but
185 * in others it actually hurts, its off by default.
186 */
187static int ixv_header_split = FALSE;
188TUNABLE_INT("hw.ixv.hdr_split", &ixv_header_split);
189
190/*
191 * Number of TX descriptors per ring,
192 * setting higher than RX as this seems
193 * the better performing choice.
194 */
195static int ixv_txd = DEFAULT_TXD;
196TUNABLE_INT("hw.ixv.txd", &ixv_txd);
197
198/* Number of RX descriptors per ring */
199static int ixv_rxd = DEFAULT_RXD;
200TUNABLE_INT("hw.ixv.rxd", &ixv_rxd);
201
202/* Legacy Transmit (single queue) */
203static int ixv_enable_legacy_tx = 0;
204TUNABLE_INT("hw.ixv.enable_legacy_tx", &ixv_enable_legacy_tx);
205
206/*
207 * Shadow VFTA table, this is needed because
208 * the real filter table gets cleared during
209 * a soft reset and we need to repopulate it.
210 */
211static u32 ixv_shadow_vfta[IXGBE_VFTA_SIZE];
212
213static int (*ixv_start_locked)(struct ifnet *, struct tx_ring *);
214static int (*ixv_ring_empty)(struct ifnet *, struct buf_ring *);
215
216/************************************************************************
217 * ixv_probe - Device identification routine
218 *
219 * Determines if the driver should be loaded on
220 * adapter based on its PCI vendor/device ID.
221 *
222 * return BUS_PROBE_DEFAULT on success, positive on failure
223 ************************************************************************/
224static int
225ixv_probe(device_t dev)
226{
227 ixgbe_vendor_info_t *ent;
228 u16 pci_vendor_id = 0;
229 u16 pci_device_id = 0;
230 u16 pci_subvendor_id = 0;
231 u16 pci_subdevice_id = 0;
232 char adapter_name[256];
233
234
235 pci_vendor_id = pci_get_vendor(dev);
236 if (pci_vendor_id != IXGBE_INTEL_VENDOR_ID)
237 return (ENXIO);
238
239 pci_device_id = pci_get_device(dev);
240 pci_subvendor_id = pci_get_subvendor(dev);
241 pci_subdevice_id = pci_get_subdevice(dev);
242
243 ent = ixv_vendor_info_array;
244 while (ent->vendor_id != 0) {
245 if ((pci_vendor_id == ent->vendor_id) &&
246 (pci_device_id == ent->device_id) &&
247 ((pci_subvendor_id == ent->subvendor_id) ||
248 (ent->subvendor_id == 0)) &&
249 ((pci_subdevice_id == ent->subdevice_id) ||
250 (ent->subdevice_id == 0))) {
251 sprintf(adapter_name, "%s, Version - %s",
252 ixv_strings[ent->index], ixv_driver_version);
253 device_set_desc_copy(dev, adapter_name);
254 return (BUS_PROBE_DEFAULT);
255 }
256 ent++;
257 }
258
259 return (ENXIO);
260} /* ixv_probe */
261
262/************************************************************************
263 * ixv_attach - Device initialization routine
264 *
265 * Called when the driver is being loaded.
266 * Identifies the type of hardware, allocates all resources
267 * and initializes the hardware.
268 *
269 * return 0 on success, positive on failure
270 ************************************************************************/
271static int
272ixv_attach(device_t dev)
273{
274 struct adapter *adapter;
275 struct ixgbe_hw *hw;
276 int error = 0;
277
278 INIT_DEBUGOUT("ixv_attach: begin");
279
280 /*
281 * Make sure BUSMASTER is set, on a VM under
282 * KVM it may not be and will break things.
283 */
284 pci_enable_busmaster(dev);
285
286 /* Allocate, clear, and link in our adapter structure */
287 adapter = device_get_softc(dev);
288 adapter->dev = dev;
289 adapter->hw.back = adapter;
290 hw = &adapter->hw;
291
292 adapter->init_locked = ixv_init_locked;
293 adapter->stop_locked = ixv_stop;
294
295 /* Core Lock Init*/
296 IXGBE_CORE_LOCK_INIT(adapter, device_get_nameunit(dev));
297
298 /* Do base PCI setup - map BAR0 */
299 if (ixv_allocate_pci_resources(adapter)) {
300 device_printf(dev, "ixv_allocate_pci_resources() failed!\n");
301 error = ENXIO;
302 goto err_out;
303 }
304
305 /* SYSCTL APIs */
306 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
307 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "debug",
308 CTLTYPE_INT | CTLFLAG_RW, adapter, 0, ixv_sysctl_debug, "I",
309 "Debug Info");
310
311 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
312 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
313 "enable_aim", CTLFLAG_RW, &ixv_enable_aim, 1,
314 "Interrupt Moderation");
315
316 /* Set up the timer callout */
317 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0);
318
319 /* Save off the information about this board */
320 hw->vendor_id = pci_get_vendor(dev);
321 hw->device_id = pci_get_device(dev);
322 hw->revision_id = pci_get_revid(dev);
323 hw->subsystem_vendor_id = pci_get_subvendor(dev);
324 hw->subsystem_device_id = pci_get_subdevice(dev);
325
326 /* A subset of set_mac_type */
327 switch (hw->device_id) {
328 case IXGBE_DEV_ID_82599_VF:
329 hw->mac.type = ixgbe_mac_82599_vf;
330 break;
331 case IXGBE_DEV_ID_X540_VF:
332 hw->mac.type = ixgbe_mac_X540_vf;
333 break;
334 case IXGBE_DEV_ID_X550_VF:
335 hw->mac.type = ixgbe_mac_X550_vf;
336 break;
337 case IXGBE_DEV_ID_X550EM_X_VF:
338 hw->mac.type = ixgbe_mac_X550EM_x_vf;
339 break;
340 case IXGBE_DEV_ID_X550EM_A_VF:
341 hw->mac.type = ixgbe_mac_X550EM_a_vf;
342 break;
343 default:
344 /* Shouldn't get here since probe succeeded */
345 device_printf(dev, "Unknown device ID!\n");
346 error = ENXIO;
347 goto err_out;
348 break;
349 }
350
351 ixv_init_device_features(adapter);
352
353 /* Initialize the shared code */
354 error = ixgbe_init_ops_vf(hw);
355 if (error) {
356 device_printf(dev, "ixgbe_init_ops_vf() failed!\n");
357 error = EIO;
358 goto err_out;
359 }
360
361 /* Setup the mailbox */
362 ixgbe_init_mbx_params_vf(hw);
363
364 /* Set the right number of segments */
365 adapter->num_segs = IXGBE_82599_SCATTER;
366
367 error = hw->mac.ops.reset_hw(hw);
368 if (error == IXGBE_ERR_RESET_FAILED)
369 device_printf(dev, "...reset_hw() failure: Reset Failed!\n");
370 else if (error)
371 device_printf(dev, "...reset_hw() failed with error %d\n",
372 error);
373 if (error) {
374 error = EIO;
375 goto err_out;
376 }
377
378 error = hw->mac.ops.init_hw(hw);
379 if (error) {
380 device_printf(dev, "...init_hw() failed with error %d\n",
381 error);
382 error = EIO;
383 goto err_out;
384 }
385
386 /* Negotiate mailbox API version */
387 error = ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_12);
388 if (error) {
389 device_printf(dev, "MBX API 1.2 negotiation failed! Error %d\n",
390 error);
391 error = EIO;
392 goto err_out;
393 }
394
395 /* If no mac address was assigned, make a random one */
396 if (!ixv_check_ether_addr(hw->mac.addr)) {
397 u8 addr[ETHER_ADDR_LEN];
398 arc4rand(&addr, sizeof(addr), 0);
399 addr[0] &= 0xFE;
400 addr[0] |= 0x02;
401 bcopy(addr, hw->mac.addr, sizeof(addr));
402 bcopy(addr, hw->mac.perm_addr, sizeof(addr));
403 }
404
405 /* Register for VLAN events */
406 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
407 ixv_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
408 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
409 ixv_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
410
411 /* Sysctls for limiting the amount of work done in the taskqueues */
412 ixv_set_sysctl_value(adapter, "rx_processing_limit",
413 "max number of rx packets to process",
414 &adapter->rx_process_limit, ixv_rx_process_limit);
415
416 ixv_set_sysctl_value(adapter, "tx_processing_limit",
417 "max number of tx packets to process",
418 &adapter->tx_process_limit, ixv_tx_process_limit);

--- 8 unchanged lines hidden (view full) ---

427
428 if (((ixv_rxd * sizeof(union ixgbe_adv_rx_desc)) % DBA_ALIGN) != 0 ||
429 ixv_rxd < MIN_RXD || ixv_rxd > MAX_RXD) {
430 device_printf(dev, "RXD config issue, using default!\n");
431 adapter->num_rx_desc = DEFAULT_RXD;
432 } else
433 adapter->num_rx_desc = ixv_rxd;
434
435 /* Setup MSI-X */
436 error = ixv_configure_interrupts(adapter);
437 if (error)
438 goto err_out;
439
440 /* Allocate our TX/RX Queues */
441 if (ixgbe_allocate_queues(adapter)) {
442 device_printf(dev, "ixgbe_allocate_queues() failed!\n");
443 error = ENOMEM;
444 goto err_out;
445 }
446
447 /* Setup OS specific network interface */
448 ixv_setup_interface(dev, adapter);
449
450 error = ixv_allocate_msix(adapter);
451 if (error) {
452 device_printf(dev, "ixv_allocate_msix() failed!\n");
453 goto err_late;
454 }
455
456 /* Do the stats setup */
457 ixv_save_stats(adapter);
458 ixv_init_stats(adapter);
459 ixv_add_stats_sysctls(adapter);
460
461 if (adapter->feat_en & IXGBE_FEATURE_NETMAP)
462 ixgbe_netmap_attach(adapter);
463
464 INIT_DEBUGOUT("ixv_attach: end");
465
466 return (0);
467
468err_late:
469 ixgbe_free_transmit_structures(adapter);
470 ixgbe_free_receive_structures(adapter);
471 free(adapter->queues, M_DEVBUF);
472err_out:
473 ixv_free_pci_resources(adapter);
474 IXGBE_CORE_LOCK_DESTROY(adapter);
475
476 return (error);
477} /* ixv_attach */
478
479/************************************************************************
480 * ixv_detach - Device removal routine
481 *
482 * Called when the driver is being removed.
483 * Stops the adapter and deallocates all the resources
484 * that were allocated for driver operation.
485 *
486 * return 0 on success, positive on failure
487 ************************************************************************/
488static int
489ixv_detach(device_t dev)
490{
491 struct adapter *adapter = device_get_softc(dev);
492 struct ix_queue *que = adapter->queues;
493
494 INIT_DEBUGOUT("ixv_detach: begin");
495
496 /* Make sure VLANS are not using driver */
497 if (adapter->ifp->if_vlantrunk != NULL) {
498 device_printf(dev, "Vlan in use, detach first\n");
499 return (EBUSY);
500 }
501
502 ether_ifdetach(adapter->ifp);
503 IXGBE_CORE_LOCK(adapter);
504 ixv_stop(adapter);
505 IXGBE_CORE_UNLOCK(adapter);
506
507 for (int i = 0; i < adapter->num_queues; i++, que++) {
508 if (que->tq) {
509 struct tx_ring *txr = que->txr;
510 taskqueue_drain(que->tq, &txr->txq_task);

--- 9 unchanged lines hidden (view full) ---

520 }
521
522 /* Unregister VLAN events */
523 if (adapter->vlan_attach != NULL)
524 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach);
525 if (adapter->vlan_detach != NULL)
526 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach);
527
528 callout_drain(&adapter->timer);
529
530 if (adapter->feat_en & IXGBE_FEATURE_NETMAP)
531 netmap_detach(adapter->ifp);
532
533 ixv_free_pci_resources(adapter);
534 bus_generic_detach(dev);
535 if_free(adapter->ifp);
536
537 ixgbe_free_transmit_structures(adapter);
538 ixgbe_free_receive_structures(adapter);
539 free(adapter->queues, M_DEVBUF);
540
541 IXGBE_CORE_LOCK_DESTROY(adapter);
542
543 return (0);
544} /* ixv_detach */
545
546/************************************************************************
547 * ixv_init_locked - Init entry point
548 *
549 * Used in two ways: It is used by the stack as an init entry
550 * point in network interface structure. It is also used
551 * by the driver as a hw/sw initialization routine to get
552 * to a consistent state.
553 *
554 * return 0 on success, positive on failure
555 ************************************************************************/
556void
557ixv_init_locked(struct adapter *adapter)
558{
559 struct ifnet *ifp = adapter->ifp;
560 device_t dev = adapter->dev;
561 struct ixgbe_hw *hw = &adapter->hw;
562 int error = 0;
563
564 INIT_DEBUGOUT("ixv_init_locked: begin");
565 mtx_assert(&adapter->core_mtx, MA_OWNED);
566 hw->adapter_stopped = FALSE;
567 hw->mac.ops.stop_adapter(hw);
568 callout_stop(&adapter->timer);
569
570 /* reprogram the RAR[0] in case user changed it. */
571 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
572
573 /* Get the latest mac address, User can use a LAA */
574 bcopy(IF_LLADDR(adapter->ifp), hw->mac.addr,
575 IXGBE_ETH_LENGTH_OF_ADDRESS);
576 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, 1);
577
578 /* Prepare transmit descriptors and buffers */
579 if (ixgbe_setup_transmit_structures(adapter)) {
580 device_printf(dev, "Could not setup transmit structures\n");
581 ixv_stop(adapter);
582 return;
583 }
584
585 /* Reset VF and renegotiate mailbox API version */
586 hw->mac.ops.reset_hw(hw);
587 error = ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_12);
588 if (error)
589 device_printf(dev, "MBX API 1.2 negotiation failed! Error %d\n",
590 error);
591
592 ixv_initialize_transmit_units(adapter);
593
594 /* Setup Multicast table */
595 ixv_set_multi(adapter);
596
597 /*
598 * Determine the correct mbuf pool
599 * for doing jumbo/headersplit
600 */
601 if (ifp->if_mtu > ETHERMTU)
602 adapter->rx_mbuf_sz = MJUMPAGESIZE;
603 else
604 adapter->rx_mbuf_sz = MCLBYTES;
605
606 /* Prepare receive descriptors and buffers */
607 if (ixgbe_setup_receive_structures(adapter)) {
608 device_printf(dev, "Could not setup receive structures\n");

--- 9 unchanged lines hidden (view full) ---

618 if (ifp->if_capenable & IFCAP_TSO4)
619 ifp->if_hwassist |= CSUM_TSO;
620 if (ifp->if_capenable & IFCAP_TXCSUM) {
621 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP);
622#if __FreeBSD_version >= 800000
623 ifp->if_hwassist |= CSUM_SCTP;
624#endif
625 }
626
627 /* Set up VLAN offload and filter */
628 ixv_setup_vlan_support(adapter);
629
630 /* Set up MSI-X routing */
631 ixv_configure_ivars(adapter);
632
633 /* Set up auto-mask */
634 IXGBE_WRITE_REG(hw, IXGBE_VTEIAM, IXGBE_EICS_RTX_QUEUE);
635
636 /* Set moderation on the Link interrupt */
637 IXGBE_WRITE_REG(hw, IXGBE_VTEITR(adapter->vector), IXGBE_LINK_ITR);
638
639 /* Stats init */
640 ixv_init_stats(adapter);
641
642 /* Config/Enable Link */
643 hw->mac.ops.check_link(hw, &adapter->link_speed, &adapter->link_up,
644 FALSE);
645
646 /* Start watchdog */
647 callout_reset(&adapter->timer, hz, ixv_local_timer, adapter);
648
649 /* And now turn on interrupts */
650 ixv_enable_intr(adapter);
651
652 /* Now inform the stack we're ready */
653 ifp->if_drv_flags |= IFF_DRV_RUNNING;
654 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
655
656 return;
657} /* ixv_init_locked */
658
659/*
660 * MSI-X Interrupt Handlers and Tasklets
661 */
662
663static inline void
664ixv_enable_queue(struct adapter *adapter, u32 vector)
665{
666 struct ixgbe_hw *hw = &adapter->hw;
667 u32 queue = 1 << vector;
668 u32 mask;
669
670 mask = (IXGBE_EIMS_RTX_QUEUE & queue);
671 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
672} /* ixv_enable_queue */
673
674static inline void
675ixv_disable_queue(struct adapter *adapter, u32 vector)
676{
677 struct ixgbe_hw *hw = &adapter->hw;
678 u64 queue = (u64)(1 << vector);
679 u32 mask;
680
681 mask = (IXGBE_EIMS_RTX_QUEUE & queue);
682 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, mask);
683} /* ixv_disable_queue */
684
685static inline void
686ixv_rearm_queues(struct adapter *adapter, u64 queues)
687{
688 u32 mask = (IXGBE_EIMS_RTX_QUEUE & queues);
689 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEICS, mask);
690} /* ixv_rearm_queues */
691
692
693/************************************************************************
694 * ixv_msix_que - MSI Queue Interrupt Service routine
695 ************************************************************************/
696void
697ixv_msix_que(void *arg)
698{
699 struct ix_queue *que = arg;
700 struct adapter *adapter = que->adapter;
701 struct ifnet *ifp = adapter->ifp;
702 struct tx_ring *txr = que->txr;
703 struct rx_ring *rxr = que->rxr;
704 bool more;
705 u32 newitr = 0;
706
707 ixv_disable_queue(adapter, que->msix);
708 ++que->irqs;
709
710 more = ixgbe_rxeof(que);
711
712 IXGBE_TX_LOCK(txr);
713 ixgbe_txeof(txr);
714 /*
715 * Make certain that if the stack
716 * has anything queued the task gets
717 * scheduled to handle it.
718 */
719 if (!ixv_ring_empty(adapter->ifp, txr->br))
720 ixv_start_locked(ifp, txr);
721 IXGBE_TX_UNLOCK(txr);
722
723 /* Do AIM now? */
724
725 if (ixv_enable_aim == FALSE)
726 goto no_calc;
727 /*
728 * Do Adaptive Interrupt Moderation:
729 * - Write out last calculated setting
730 * - Calculate based on average size over
731 * the last interval.
732 */
733 if (que->eitr_setting)
734 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEITR(que->msix),
735 que->eitr_setting);
736
737 que->eitr_setting = 0;
738
739 /* Idle, do nothing */
740 if ((txr->bytes == 0) && (rxr->bytes == 0))
741 goto no_calc;
742
743 if ((txr->bytes) && (txr->packets))
744 newitr = txr->bytes/txr->packets;
745 if ((rxr->bytes) && (rxr->packets))
746 newitr = max(newitr, (rxr->bytes / rxr->packets));
747 newitr += 24; /* account for hardware frame, crc */
748
749 /* set an upper boundary */
750 newitr = min(newitr, 3000);
751
752 /* Be nice to the mid range */
753 if ((newitr > 300) && (newitr < 1200))
754 newitr = (newitr / 3);
755 else
756 newitr = (newitr / 2);
757
758 newitr |= newitr << 16;
759
760 /* save for next interrupt */
761 que->eitr_setting = newitr;
762
763 /* Reset state */
764 txr->bytes = 0;
765 txr->packets = 0;
766 rxr->bytes = 0;
767 rxr->packets = 0;
768
769no_calc:
770 if (more)
771 taskqueue_enqueue(que->tq, &que->que_task);
772 else /* Re-enable this interrupt */
773 ixv_enable_queue(adapter, que->msix);
774
775 return;
776} /* ixv_msix_que */
777
778/************************************************************************
779 * ixv_msix_mbx
780 ************************************************************************/
781static void
782ixv_msix_mbx(void *arg)
783{
784 struct adapter *adapter = arg;
785 struct ixgbe_hw *hw = &adapter->hw;
786 u32 reg;
787
788 ++adapter->link_irq;
789
790 /* First get the cause */
791 reg = IXGBE_READ_REG(hw, IXGBE_VTEICS);
792 /* Clear interrupt with write */
793 IXGBE_WRITE_REG(hw, IXGBE_VTEICR, reg);
794
795 /* Link status change */
796 if (reg & IXGBE_EICR_LSC)
797 taskqueue_enqueue(adapter->tq, &adapter->link_task);
798
799 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, IXGBE_EIMS_OTHER);
800
801 return;
802} /* ixv_msix_mbx */
803
804/************************************************************************
805 * ixv_media_status - Media Ioctl callback
806 *
807 * Called whenever the user queries the status of
808 * the interface using ifconfig.
809 ************************************************************************/
810static void
811ixv_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
812{
813 struct adapter *adapter = ifp->if_softc;
814
815 INIT_DEBUGOUT("ixv_media_status: begin");
816 IXGBE_CORE_LOCK(adapter);
817 ixv_update_link_status(adapter);
818
819 ifmr->ifm_status = IFM_AVALID;

--- 6 unchanged lines hidden (view full) ---

826
827 ifmr->ifm_status |= IFM_ACTIVE;
828
829 switch (adapter->link_speed) {
830 case IXGBE_LINK_SPEED_1GB_FULL:
831 ifmr->ifm_active |= IFM_1000_T | IFM_FDX;
832 break;
833 case IXGBE_LINK_SPEED_10GB_FULL:
834 ifmr->ifm_active |= IFM_10G_T | IFM_FDX;
835 break;
836 case IXGBE_LINK_SPEED_100_FULL:
837 ifmr->ifm_active |= IFM_100_TX | IFM_FDX;
838 break;
839 case IXGBE_LINK_SPEED_10_FULL:
840 ifmr->ifm_active |= IFM_10_T | IFM_FDX;
841 break;
842 }
843
844 IXGBE_CORE_UNLOCK(adapter);
845
846 return;
847} /* ixv_media_status */
848
849/************************************************************************
850 * ixv_media_change - Media Ioctl callback
851 *
852 * Called when the user changes speed/duplex using
853 * media/mediopt option with ifconfig.
854 ************************************************************************/
855static int
856ixv_media_change(struct ifnet *ifp)
857{
858 struct adapter *adapter = ifp->if_softc;
859 struct ifmedia *ifm = &adapter->media;
860
861 INIT_DEBUGOUT("ixv_media_change: begin");
862
863 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
864 return (EINVAL);
865
866 switch (IFM_SUBTYPE(ifm->ifm_media)) {
867 case IFM_AUTO:
868 break;
869 default:
870 device_printf(adapter->dev, "Only auto media type\n");
871 return (EINVAL);
872 }
873
874 return (0);
875} /* ixv_media_change */
876
877
878/************************************************************************
879 * ixv_set_multi - Multicast Update
880 *
881 * Called whenever multicast address list is updated.
882 ************************************************************************/
883static void
884ixv_set_multi(struct adapter *adapter)
885{
886 u8 mta[MAX_NUM_MULTICAST_ADDRESSES * IXGBE_ETH_LENGTH_OF_ADDRESS];
887 u8 *update_ptr;
888 struct ifmultiaddr *ifma;
889 struct ifnet *ifp = adapter->ifp;
890 int mcnt = 0;
891
892 IOCTL_DEBUGOUT("ixv_set_multi: begin");
893
894#if __FreeBSD_version < 800000
895 IF_ADDR_LOCK(ifp);
896#else
897 if_maddr_rlock(ifp);
898#endif
899 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
900 if (ifma->ifma_addr->sa_family != AF_LINK)
901 continue;
902 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
903 &mta[mcnt * IXGBE_ETH_LENGTH_OF_ADDRESS],
904 IXGBE_ETH_LENGTH_OF_ADDRESS);
905 mcnt++;
906 }
907#if __FreeBSD_version < 800000
908 IF_ADDR_UNLOCK(ifp);
909#else
910 if_maddr_runlock(ifp);
911#endif
912
913 update_ptr = mta;
914
915 adapter->hw.mac.ops.update_mc_addr_list(&adapter->hw, update_ptr, mcnt,
916 ixv_mc_array_itr, TRUE);
917
918 return;
919} /* ixv_set_multi */
920
921/************************************************************************
922 * ixv_mc_array_itr
923 *
924 * An iterator function needed by the multicast shared code.
925 * It feeds the shared code routine the addresses in the
926 * array of ixv_set_multi() one by one.
927 ************************************************************************/
928static u8 *
929ixv_mc_array_itr(struct ixgbe_hw *hw, u8 **update_ptr, u32 *vmdq)
930{
931 u8 *addr = *update_ptr;
932 u8 *newptr;
933 *vmdq = 0;
934
935 newptr = addr + IXGBE_ETH_LENGTH_OF_ADDRESS;
936 *update_ptr = newptr;
937
938 return addr;
939} /* ixv_mc_array_itr */
940
941/************************************************************************
942 * ixv_local_timer - Timer routine
943 *
944 * Checks for link status, updates statistics,
945 * and runs the watchdog check.
946 ************************************************************************/
947static void
948ixv_local_timer(void *arg)
949{
950 struct adapter *adapter = arg;
951 device_t dev = adapter->dev;
952 struct ix_queue *que = adapter->queues;
953 u64 queues = 0;
954 int hung = 0;
955
956 mtx_assert(&adapter->core_mtx, MA_OWNED);
957
958 ixv_check_link(adapter);
959
960 /* Stats Update */
961 ixv_update_stats(adapter);
962
963 /*
964 * Check the TX queues status
965 * - mark hung queues so we don't schedule on them
966 * - watchdog only if all queues show hung
967 */
968 for (int i = 0; i < adapter->num_queues; i++, que++) {
969 /* Keep track of queues with work for soft irq */
970 if (que->txr->busy)
971 queues |= ((u64)1 << que->me);
972 /*
973 * Each time txeof runs without cleaning, but there
974 * are uncleaned descriptors it increments busy. If
975 * we get to the MAX we declare it hung.
976 */
977 if (que->busy == IXGBE_QUEUE_HUNG) {
978 ++hung;
979 /* Mark the queue as inactive */
980 adapter->active_queues &= ~((u64)1 << que->me);
981 continue;
982 } else {
983 /* Check if we've come back from hung */
984 if ((adapter->active_queues & ((u64)1 << que->me)) == 0)
985 adapter->active_queues |= ((u64)1 << que->me);
986 }
987 if (que->busy >= IXGBE_MAX_TX_BUSY) {
988 device_printf(dev,
989 "Warning queue %d appears to be hung!\n", i);
990 que->txr->busy = IXGBE_QUEUE_HUNG;
991 ++hung;
992 }
993
994 }
995
996 /* Only truly watchdog if all queues show hung */
997 if (hung == adapter->num_queues)
998 goto watchdog;
999 else if (queues != 0) { /* Force an IRQ on queues with work */
1000 ixv_rearm_queues(adapter, queues);
1001 }
1002
1003 callout_reset(&adapter->timer, hz, ixv_local_timer, adapter);
1004
1005 return;
1006
1007watchdog:
1008
1009 device_printf(adapter->dev, "Watchdog timeout -- resetting\n");
1010 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1011 adapter->watchdog_events++;
1012 ixv_init_locked(adapter);
1013} /* ixv_local_timer */
1014
1015/************************************************************************
1016 * ixv_update_link_status - Update OS on link state
1017 *
1018 * Note: Only updates the OS on the cached link state.
1019 * The real check of the hardware only happens with
1020 * a link interrupt.
1021 ************************************************************************/
1022static void
1023ixv_update_link_status(struct adapter *adapter)
1024{
1025 struct ifnet *ifp = adapter->ifp;
1026 device_t dev = adapter->dev;
1027
1028 if (adapter->link_up) {
1029 if (adapter->link_active == FALSE) {
1030 if (bootverbose)
1031 device_printf(dev,"Link is up %d Gbps %s \n",
1032 ((adapter->link_speed == 128) ? 10 : 1),
1033 "Full Duplex");
1034 adapter->link_active = TRUE;
1035 if_link_state_change(ifp, LINK_STATE_UP);
1036 }
1037 } else { /* Link down */
1038 if (adapter->link_active == TRUE) {
1039 if (bootverbose)
1040 device_printf(dev,"Link is Down\n");
1041 if_link_state_change(ifp, LINK_STATE_DOWN);
1042 adapter->link_active = FALSE;
1043 }
1044 }
1045
1046 return;
1047} /* ixv_update_link_status */
1048
1049
1050/************************************************************************
1051 * ixv_stop - Stop the hardware
1052 *
1053 * Disables all traffic on the adapter by issuing a
1054 * global reset on the MAC and deallocates TX/RX buffers.
1055 ************************************************************************/
1056static void
1057ixv_stop(void *arg)
1058{
1059 struct ifnet *ifp;
1060 struct adapter *adapter = arg;
1061 struct ixgbe_hw *hw = &adapter->hw;
1062
1063 ifp = adapter->ifp;
1064
1065 mtx_assert(&adapter->core_mtx, MA_OWNED);
1066
1067 INIT_DEBUGOUT("ixv_stop: begin\n");
1068 ixv_disable_intr(adapter);
1069
1070 /* Tell the stack that the interface is no longer active */
1071 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1072
1073 hw->mac.ops.reset_hw(hw);
1074 adapter->hw.adapter_stopped = FALSE;
1075 hw->mac.ops.stop_adapter(hw);
1076 callout_stop(&adapter->timer);
1077
1078 /* reprogram the RAR[0] in case user changed it. */
1079 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1080
1081 return;
1082} /* ixv_stop */
1083
1084
1085/************************************************************************
1086 * ixv_allocate_pci_resources
1087 ************************************************************************/
1088static int
1089ixv_allocate_pci_resources(struct adapter *adapter)
1090{
1091 device_t dev = adapter->dev;
1092 int rid;
1093
1094 rid = PCIR_BAR(0);
1095 adapter->pci_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1096 RF_ACTIVE);
1097
1098 if (!(adapter->pci_mem)) {
1099 device_printf(dev, "Unable to allocate bus resource: memory\n");
1100 return (ENXIO);
1101 }
1102
1103 adapter->osdep.mem_bus_space_tag = rman_get_bustag(adapter->pci_mem);
1104 adapter->osdep.mem_bus_space_handle =
1105 rman_get_bushandle(adapter->pci_mem);
1106 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle;
1107
1108 /* Pick up the tuneable queues */
1109 adapter->num_queues = ixv_num_queues;
1110
1111 return (0);
1112} /* ixv_allocate_pci_resources */
1113
1114/************************************************************************
1115 * ixv_free_pci_resources
1116 ************************************************************************/
1117static void
1118ixv_free_pci_resources(struct adapter * adapter)
1119{
1120 struct ix_queue *que = adapter->queues;
1121 device_t dev = adapter->dev;
1122 int rid, memrid;
1123
1124 memrid = PCIR_BAR(MSIX_82598_BAR);
1125
1126 /*
1127 * There is a slight possibility of a failure mode
1128 * in attach that will result in entering this function
1129 * before interrupt resources have been initialized, and
1130 * in that case we do not want to execute the loops below
1131 * We can detect this reliably by the state of the adapter
1132 * res pointer.
1133 */
1134 if (adapter->res == NULL)
1135 goto mem;
1136
1137 /*
1138 * Release all msix queue resources:
1139 */
1140 for (int i = 0; i < adapter->num_queues; i++, que++) {
1141 rid = que->msix + 1;
1142 if (que->tag != NULL) {
1143 bus_teardown_intr(dev, que->res, que->tag);
1144 que->tag = NULL;
1145 }
1146 if (que->res != NULL)
1147 bus_release_resource(dev, SYS_RES_IRQ, rid, que->res);
1148 }
1149
1150
1151 /* Clean the Mailbox interrupt last */
1152 rid = adapter->vector + 1;
1153
1154 if (adapter->tag != NULL) {
1155 bus_teardown_intr(dev, adapter->res, adapter->tag);
1156 adapter->tag = NULL;
1157 }
1158 if (adapter->res != NULL)
1159 bus_release_resource(dev, SYS_RES_IRQ, rid, adapter->res);
1160
1161mem:
1162 pci_release_msi(dev);
1163
1164 if (adapter->msix_mem != NULL)
1165 bus_release_resource(dev, SYS_RES_MEMORY, memrid,
1166 adapter->msix_mem);
1167
1168 if (adapter->pci_mem != NULL)
1169 bus_release_resource(dev, SYS_RES_MEMORY, PCIR_BAR(0),
1170 adapter->pci_mem);
1171
1172 return;
1173} /* ixv_free_pci_resources */
1174
1175/************************************************************************
1176 * ixv_setup_interface
1177 *
1178 * Setup networking device structure and register an interface.
1179 ************************************************************************/
1180static void
1181ixv_setup_interface(device_t dev, struct adapter *adapter)
1182{
1183 struct ifnet *ifp;
1184
1185 INIT_DEBUGOUT("ixv_setup_interface: begin");
1186
1187 ifp = adapter->ifp = if_alloc(IFT_ETHER);
1188 if (ifp == NULL)
1189 panic("%s: can not if_alloc()\n", device_get_nameunit(dev));
1190 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1191 ifp->if_baudrate = 1000000000;
1192 ifp->if_init = ixv_init;
1193 ifp->if_softc = adapter;
1194 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1195 ifp->if_ioctl = ixv_ioctl;
1196 if_setgetcounterfn(ifp, ixv_get_counter);
1197 /* TSO parameters */
1198 ifp->if_hw_tsomax = 65518;
1199 ifp->if_hw_tsomaxsegcount = IXGBE_82599_SCATTER;
1200 ifp->if_hw_tsomaxsegsize = 2048;
1201 if (adapter->feat_en & IXGBE_FEATURE_LEGACY_TX) {
1202 ifp->if_start = ixgbe_legacy_start;
1203 ixv_start_locked = ixgbe_legacy_start_locked;
1204 ixv_ring_empty = ixgbe_legacy_ring_empty;
1205 } else {
1206 ifp->if_transmit = ixgbe_mq_start;
1207 ifp->if_qflush = ixgbe_qflush;
1208 ixv_start_locked = ixgbe_mq_start_locked;
1209 ixv_ring_empty = drbr_empty;
1210 }
1211 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 2);
1212
1213 ether_ifattach(ifp, adapter->hw.mac.addr);
1214
1215 adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR;
1216
1217 /*
1218 * Tell the upper layer(s) we support long frames.
1219 */
1220 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
1221
1222 /* Set capability flags */
1223 ifp->if_capabilities |= IFCAP_HWCSUM
1224 | IFCAP_HWCSUM_IPV6
1225 | IFCAP_TSO
1226 | IFCAP_LRO
1227 | IFCAP_VLAN_HWTAGGING
1228 | IFCAP_VLAN_HWTSO
1229 | IFCAP_VLAN_HWCSUM
1230 | IFCAP_JUMBO_MTU
1231 | IFCAP_VLAN_MTU;
1232
1233 /* Enable the above capabilities by default */
1234 ifp->if_capenable = ifp->if_capabilities;
1235
1236 /*
1237 * Specify the media types supported by this adapter and register
1238 * callbacks to update media and link information
1239 */
1240 ifmedia_init(&adapter->media, IFM_IMASK, ixv_media_change,
1241 ixv_media_status);
1242 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1243 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
1244
1245 return;
1246} /* ixv_setup_interface */
1247
1248
1249/************************************************************************
1250 * ixv_initialize_transmit_units - Enable transmit unit.
1251 ************************************************************************/
1252static void
1253ixv_initialize_transmit_units(struct adapter *adapter)
1254{
1255 struct tx_ring *txr = adapter->tx_rings;
1256 struct ixgbe_hw *hw = &adapter->hw;
1257
1258
1259 for (int i = 0; i < adapter->num_queues; i++, txr++) {
1260 u64 tdba = txr->txdma.dma_paddr;
1261 u32 txctrl, txdctl;
1262
1263 /* Set WTHRESH to 8, burst writeback */
1264 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
1265 txdctl |= (8 << 16);
1266 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
1267
1268 /* Set the HW Tx Head and Tail indices */
1269 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDH(i), 0);
1270 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VFTDT(i), 0);
1271
1272 /* Set Tx Tail register */
1273 txr->tail = IXGBE_VFTDT(i);
1274
1275 /* Set Ring parameters */
1276 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i),
1277 (tdba & 0x00000000ffffffffULL));
1278 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i), (tdba >> 32));
1279 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i),
1280 adapter->num_tx_desc * sizeof(struct ixgbe_legacy_tx_desc));
1281 txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(i));
1282 txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
1283 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), txctrl);
1284
1285 /* Now enable */
1286 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
1287 txdctl |= IXGBE_TXDCTL_ENABLE;
1288 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl);
1289 }
1290
1291 return;
1292} /* ixv_initialize_transmit_units */
1293
1294
1295/************************************************************************
1296 * ixv_initialize_rss_mapping
1297 ************************************************************************/
1298static void
1299ixv_initialize_rss_mapping(struct adapter *adapter)
1300{
1301 struct ixgbe_hw *hw = &adapter->hw;
1302 u32 reta = 0, mrqc, rss_key[10];
1303 int queue_id;
1304 int i, j;
1305 u32 rss_hash_config;
1306
1307 if (adapter->feat_en & IXGBE_FEATURE_RSS) {
1308 /* Fetch the configured RSS key */
1309 rss_getkey((uint8_t *)&rss_key);
1310 } else {
1311 /* set up random bits */
1312 arc4rand(&rss_key, sizeof(rss_key), 0);
1313 }
1314
1315 /* Now fill out hash function seeds */
1316 for (i = 0; i < 10; i++)
1317 IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), rss_key[i]);
1318
1319 /* Set up the redirection table */
1320 for (i = 0, j = 0; i < 64; i++, j++) {
1321 if (j == adapter->num_queues)
1322 j = 0;
1323
1324 if (adapter->feat_en & IXGBE_FEATURE_RSS) {
1325 /*
1326 * Fetch the RSS bucket id for the given indirection
1327 * entry. Cap it at the number of configured buckets
1328 * (which is num_queues.)
1329 */
1330 queue_id = rss_get_indirection_to_bucket(i);
1331 queue_id = queue_id % adapter->num_queues;
1332 } else
1333 queue_id = j;
1334
1335 /*
1336 * The low 8 bits are for hash value (n+0);
1337 * The next 8 bits are for hash value (n+1), etc.
1338 */
1339 reta >>= 8;
1340 reta |= ((uint32_t)queue_id) << 24;
1341 if ((i & 3) == 3) {
1342 IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), reta);
1343 reta = 0;
1344 }
1345 }
1346
1347 /* Perform hash on these packet types */
1348 if (adapter->feat_en & IXGBE_FEATURE_RSS)
1349 rss_hash_config = rss_gethashconfig();
1350 else {
1351 /*
1352 * Disable UDP - IP fragments aren't currently being handled
1353 * and so we end up with a mix of 2-tuple and 4-tuple
1354 * traffic.
1355 */
1356 rss_hash_config = RSS_HASHTYPE_RSS_IPV4
1357 | RSS_HASHTYPE_RSS_TCP_IPV4
1358 | RSS_HASHTYPE_RSS_IPV6
1359 | RSS_HASHTYPE_RSS_TCP_IPV6;
1360 }
1361
1362 mrqc = IXGBE_MRQC_RSSEN;
1363 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV4)
1364 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4;
1365 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV4)
1366 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP;
1367 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6)
1368 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6;
1369 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6)
1370 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
1371 if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6_EX)
1372 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_IPV6_EX defined, but not supported\n",
1373 __func__);
1374 if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6_EX)
1375 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_TCP_IPV6_EX defined, but not supported\n",
1376 __func__);
1377 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4)
1378 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
1379 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV4_EX)
1380 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_UDP_IPV4_EX defined, but not supported\n",
1381 __func__);
1382 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6)
1383 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
1384 if (rss_hash_config & RSS_HASHTYPE_RSS_UDP_IPV6_EX)
1385 device_printf(adapter->dev, "%s: RSS_HASHTYPE_RSS_UDP_IPV6_EX defined, but not supported\n",
1386 __func__);
1387 IXGBE_WRITE_REG(hw, IXGBE_VFMRQC, mrqc);
1388} /* ixv_initialize_rss_mapping */
1389
1390
1391/************************************************************************
1392 * ixv_initialize_receive_units - Setup receive registers and features.
1393 ************************************************************************/
1394static void
1395ixv_initialize_receive_units(struct adapter *adapter)
1396{
1397 struct rx_ring *rxr = adapter->rx_rings;
1398 struct ixgbe_hw *hw = &adapter->hw;
1399 struct ifnet *ifp = adapter->ifp;
1400 u32 bufsz, rxcsum, psrtype;
1401
1402 if (ifp->if_mtu > ETHERMTU)
1403 bufsz = 4096 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1404 else
1405 bufsz = 2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1406
1407 psrtype = IXGBE_PSRTYPE_TCPHDR
1408 | IXGBE_PSRTYPE_UDPHDR
1409 | IXGBE_PSRTYPE_IPV4HDR
1410 | IXGBE_PSRTYPE_IPV6HDR
1411 | IXGBE_PSRTYPE_L2HDR;
1412
1413 if (adapter->num_queues > 1)
1414 psrtype |= 1 << 29;
1415
1416 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
1417
1418 /* Tell PF our max_frame size */
1419 if (ixgbevf_rlpml_set_vf(hw, adapter->max_frame_size) != 0) {
1420 device_printf(adapter->dev, "There is a problem with the PF setup. It is likely the receive unit for this VF will not function correctly.\n");
1421 }
1422
1423 for (int i = 0; i < adapter->num_queues; i++, rxr++) {
1424 u64 rdba = rxr->rxdma.dma_paddr;
1425 u32 reg, rxdctl;
1426
1427 /* Disable the queue */
1428 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
1429 rxdctl &= ~IXGBE_RXDCTL_ENABLE;

--- 4 unchanged lines hidden (view full) ---

1434 msec_delay(1);
1435 else
1436 break;
1437 }
1438 wmb();
1439 /* Setup the Base and Length of the Rx Descriptor Ring */
1440 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i),
1441 (rdba & 0x00000000ffffffffULL));
1442 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i), (rdba >> 32));
1443 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i),
1444 adapter->num_rx_desc * sizeof(union ixgbe_adv_rx_desc));
1445
1446 /* Reset the ring indices */
1447 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(rxr->me), 0);
1448 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), 0);
1449
1450 /* Set up the SRRCTL register */

--- 9 unchanged lines hidden (view full) ---

1460
1461 /* Do the queue enabling last */
1462 rxdctl |= IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME;
1463 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl);
1464 for (int k = 0; k < 10; k++) {
1465 if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)) &
1466 IXGBE_RXDCTL_ENABLE)
1467 break;
1468 msec_delay(1);
1469 }
1470 wmb();
1471
1472 /* Set the Tail Pointer */
1473 /*
1474 * In netmap mode, we must preserve the buffers made
1475 * available to userspace before the if_init()
1476 * (this is true by default on the TX side, because
1477 * init makes all buffers available to userspace).
1478 *
1479 * netmap_reset() and the device specific routines
1480 * (e.g. ixgbe_setup_receive_rings()) map these
1481 * buffers at the end of the NIC ring, so here we
1482 * must set the RDT (tail) register to make sure
1483 * they are not overwritten.
1484 *
1485 * In this driver the NIC ring starts at RDH = 0,
1486 * RDT points to the last slot available for reception (?),
1487 * so RDT = num_rx_desc - 1 means the whole ring is available.
1488 */
1489#ifdef DEV_NETMAP
1490 if ((adapter->feat_en & IXGBE_FEATURE_NETMAP) &&
1491 (ifp->if_capenable & IFCAP_NETMAP)) {
1492 struct netmap_adapter *na = NA(adapter->ifp);
1493 struct netmap_kring *kring = &na->rx_rings[i];
1494 int t = na->num_rx_desc - 1 - nm_kr_rxspace(kring);
1495
1496 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), t);
1497 } else
1498#endif /* DEV_NETMAP */
1499 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me),
1500 adapter->num_rx_desc - 1);
1501 }
1502
1503 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
1504
1505 ixv_initialize_rss_mapping(adapter);
1506
1507 if (adapter->num_queues > 1) {
1508 /* RSS and RX IPP Checksum are mutually exclusive */
1509 rxcsum |= IXGBE_RXCSUM_PCSD;
1510 }
1511
1512 if (ifp->if_capenable & IFCAP_RXCSUM)
1513 rxcsum |= IXGBE_RXCSUM_PCSD;
1514
1515 if (!(rxcsum & IXGBE_RXCSUM_PCSD))
1516 rxcsum |= IXGBE_RXCSUM_IPPCSE;
1517
1518 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
1519
1520 return;
1521} /* ixv_initialize_receive_units */
1522
1523/************************************************************************
1524 * ixv_setup_vlan_support
1525 ************************************************************************/
1526static void
1527ixv_setup_vlan_support(struct adapter *adapter)
1528{
1529 struct ixgbe_hw *hw = &adapter->hw;
1530 u32 ctrl, vid, vfta, retry;
1531
1532 /*
1533 * We get here thru init_locked, meaning
1534 * a soft reset, this has already cleared
1535 * the VFTA and other state, so if there
1536 * have been no vlan's registered do nothing.
1537 */
1538 if (adapter->num_vlans == 0)
1539 return;
1540
1541 /* Enable the queues */
1542 for (int i = 0; i < adapter->num_queues; i++) {
1543 ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
1544 ctrl |= IXGBE_RXDCTL_VME;
1545 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), ctrl);
1546 /*
1547 * Let Rx path know that it needs to store VLAN tag
1548 * as part of extra mbuf info.
1549 */
1550 adapter->rx_rings[i].vtag_strip = TRUE;
1551 }
1552
1553 /*
1554 * A soft reset zero's out the VFTA, so
1555 * we need to repopulate it now.
1556 */
1557 for (int i = 0; i < IXGBE_VFTA_SIZE; i++) {
1558 if (ixv_shadow_vfta[i] == 0)
1559 continue;
1560 vfta = ixv_shadow_vfta[i];
1561 /*
1562 * Reconstruct the vlan id's
1563 * based on the bits set in each
1564 * of the array ints.
1565 */
1566 for (int j = 0; j < 32; j++) {
1567 retry = 0;
1568 if ((vfta & (1 << j)) == 0)
1569 continue;
1570 vid = (i * 32) + j;
1571 /* Call the shared code mailbox routine */
1572 while (hw->mac.ops.set_vfta(hw, vid, 0, TRUE, FALSE)) {
1573 if (++retry > 5)
1574 break;
1575 }
1576 }
1577 }
1578} /* ixv_setup_vlan_support */
1579
1580/************************************************************************
1581 * ixv_register_vlan
1582 *
1583 * Run via a vlan config EVENT, it enables us to use the
1584 * HW Filter table since we can get the vlan id. This just
1585 * creates the entry in the soft version of the VFTA, init
1586 * will repopulate the real table.
1587 ************************************************************************/
1588static void
1589ixv_register_vlan(void *arg, struct ifnet *ifp, u16 vtag)
1590{
1591 struct adapter *adapter = ifp->if_softc;
1592 u16 index, bit;
1593
1594 if (ifp->if_softc != arg) /* Not our event */
1595 return;
1596
1597 if ((vtag == 0) || (vtag > 4095)) /* Invalid */
1598 return;
1599
1600 IXGBE_CORE_LOCK(adapter);
1601 index = (vtag >> 5) & 0x7F;
1602 bit = vtag & 0x1F;
1603 ixv_shadow_vfta[index] |= (1 << bit);
1604 ++adapter->num_vlans;
1605 /* Re-init to load the changes */
1606 ixv_init_locked(adapter);
1607 IXGBE_CORE_UNLOCK(adapter);
1608} /* ixv_register_vlan */
1609
1610/************************************************************************
1611 * ixv_unregister_vlan
1612 *
1613 * Run via a vlan unconfig EVENT, remove our entry
1614 * in the soft vfta.
1615 ************************************************************************/
1616static void
1617ixv_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag)
1618{
1619 struct adapter *adapter = ifp->if_softc;
1620 u16 index, bit;
1621
1622 if (ifp->if_softc != arg)
1623 return;
1624
1625 if ((vtag == 0) || (vtag > 4095)) /* Invalid */
1626 return;
1627
1628 IXGBE_CORE_LOCK(adapter);
1629 index = (vtag >> 5) & 0x7F;
1630 bit = vtag & 0x1F;
1631 ixv_shadow_vfta[index] &= ~(1 << bit);
1632 --adapter->num_vlans;
1633 /* Re-init to load the changes */
1634 ixv_init_locked(adapter);
1635 IXGBE_CORE_UNLOCK(adapter);
1636} /* ixv_unregister_vlan */
1637
1638/************************************************************************
1639 * ixv_enable_intr
1640 ************************************************************************/
1641static void
1642ixv_enable_intr(struct adapter *adapter)
1643{
1644 struct ixgbe_hw *hw = &adapter->hw;
1645 struct ix_queue *que = adapter->queues;
1646 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
1647
1648
1649 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
1650
1651 mask = IXGBE_EIMS_ENABLE_MASK;
1652 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
1653 IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
1654
1655 for (int i = 0; i < adapter->num_queues; i++, que++)
1656 ixv_enable_queue(adapter, que->msix);
1657
1658 IXGBE_WRITE_FLUSH(hw);
1659
1660 return;
1661} /* ixv_enable_intr */
1662
1663/************************************************************************
1664 * ixv_disable_intr
1665 ************************************************************************/
1666static void
1667ixv_disable_intr(struct adapter *adapter)
1668{
1669 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIAC, 0);
1670 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEIMC, ~0);
1671 IXGBE_WRITE_FLUSH(&adapter->hw);
1672
1673 return;
1674} /* ixv_disable_intr */
1675
1676/************************************************************************
1677 * ixv_set_ivar
1678 *
1679 * Setup the correct IVAR register for a particular MSI-X interrupt
1680 * - entry is the register array entry
1681 * - vector is the MSI-X vector for this queue
1682 * - type is RX/TX/MISC
1683 ************************************************************************/
1684static void
1685ixv_set_ivar(struct adapter *adapter, u8 entry, u8 vector, s8 type)
1686{
1687 struct ixgbe_hw *hw = &adapter->hw;
1688 u32 ivar, index;
1689
1690 vector |= IXGBE_IVAR_ALLOC_VAL;
1691
1692 if (type == -1) { /* MISC IVAR */
1693 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
1694 ivar &= ~0xFF;
1695 ivar |= vector;
1696 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
1697 } else { /* RX/TX IVARS */
1698 index = (16 * (entry & 1)) + (8 * type);
1699 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(entry >> 1));
1700 ivar &= ~(0xFF << index);
1701 ivar |= (vector << index);
1702 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(entry >> 1), ivar);
1703 }
1704} /* ixv_set_ivar */
1705
1706/************************************************************************
1707 * ixv_configure_ivars
1708 ************************************************************************/
1709static void
1710ixv_configure_ivars(struct adapter *adapter)
1711{
1712 struct ix_queue *que = adapter->queues;
1713
1714 for (int i = 0; i < adapter->num_queues; i++, que++) {
1715 /* First the RX queue entry */
1716 ixv_set_ivar(adapter, i, que->msix, 0);
1717 /* ... and the TX */
1718 ixv_set_ivar(adapter, i, que->msix, 1);
1719 /* Set an initial value in EITR */
1720 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VTEITR(que->msix),
1721 IXGBE_EITR_DEFAULT);
1722 }
1723
1724 /* For the mailbox interrupt */
1725 ixv_set_ivar(adapter, 1, adapter->vector, -1);
1726} /* ixv_configure_ivars */
1727
1728
1729/************************************************************************
1730 * ixv_get_counter
1731 ************************************************************************/
1732static uint64_t
1733ixv_get_counter(struct ifnet *ifp, ift_counter cnt)
1734{
1735 struct adapter *adapter;
1736
1737 adapter = if_getsoftc(ifp);
1738
1739 switch (cnt) {
1740 case IFCOUNTER_IPACKETS:
1741 return (adapter->ipackets);
1742 case IFCOUNTER_OPACKETS:
1743 return (adapter->opackets);
1744 case IFCOUNTER_IBYTES:
1745 return (adapter->ibytes);
1746 case IFCOUNTER_OBYTES:
1747 return (adapter->obytes);
1748 case IFCOUNTER_IMCASTS:
1749 return (adapter->imcasts);
1750 default:
1751 return (if_get_counter_default(ifp, cnt));
1752 }
1753} /* ixv_get_counter */
1754
1755/************************************************************************
1756 * ixv_save_stats
1757 *
1758 * The VF stats registers never have a truly virgin
1759 * starting point, so this routine tries to make an
1760 * artificial one, marking ground zero on attach as
1761 * it were.
1762 ************************************************************************/
1763static void
1764ixv_save_stats(struct adapter *adapter)
1765{
1766 if (adapter->stats.vf.vfgprc || adapter->stats.vf.vfgptc) {
1767 adapter->stats.vf.saved_reset_vfgprc +=
1768 adapter->stats.vf.vfgprc - adapter->stats.vf.base_vfgprc;
1769 adapter->stats.vf.saved_reset_vfgptc +=
1770 adapter->stats.vf.vfgptc - adapter->stats.vf.base_vfgptc;
1771 adapter->stats.vf.saved_reset_vfgorc +=
1772 adapter->stats.vf.vfgorc - adapter->stats.vf.base_vfgorc;
1773 adapter->stats.vf.saved_reset_vfgotc +=
1774 adapter->stats.vf.vfgotc - adapter->stats.vf.base_vfgotc;
1775 adapter->stats.vf.saved_reset_vfmprc +=
1776 adapter->stats.vf.vfmprc - adapter->stats.vf.base_vfmprc;
1777 }
1778} /* ixv_save_stats */
1779
1780/************************************************************************
1781 * ixv_init_stats
1782 ************************************************************************/
1783static void
1784ixv_init_stats(struct adapter *adapter)
1785{
1786 struct ixgbe_hw *hw = &adapter->hw;
1787
1788 adapter->stats.vf.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
1789 adapter->stats.vf.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
1790 adapter->stats.vf.last_vfgorc |=
1791 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
1792
1793 adapter->stats.vf.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
1794 adapter->stats.vf.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
1795 adapter->stats.vf.last_vfgotc |=
1796 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
1797
1798 adapter->stats.vf.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
1799
1800 adapter->stats.vf.base_vfgprc = adapter->stats.vf.last_vfgprc;
1801 adapter->stats.vf.base_vfgorc = adapter->stats.vf.last_vfgorc;
1802 adapter->stats.vf.base_vfgptc = adapter->stats.vf.last_vfgptc;
1803 adapter->stats.vf.base_vfgotc = adapter->stats.vf.last_vfgotc;
1804 adapter->stats.vf.base_vfmprc = adapter->stats.vf.last_vfmprc;
1805} /* ixv_init_stats */
1806
1807#define UPDATE_STAT_32(reg, last, count) \
1808{ \
1809 u32 current = IXGBE_READ_REG(hw, reg); \
1810 if (current < last) \
1811 count += 0x100000000LL; \
1812 last = current; \
1813 count &= 0xFFFFFFFF00000000LL; \
1814 count |= current; \
1815}
1816
1817#define UPDATE_STAT_36(lsb, msb, last, count) \
1818{ \
1819 u64 cur_lsb = IXGBE_READ_REG(hw, lsb); \
1820 u64 cur_msb = IXGBE_READ_REG(hw, msb); \
1821 u64 current = ((cur_msb << 32) | cur_lsb); \
1822 if (current < last) \
1823 count += 0x1000000000LL; \
1824 last = current; \
1825 count &= 0xFFFFFFF000000000LL; \
1826 count |= current; \
1827}
1828
1829/************************************************************************
1830 * ixv_update_stats - Update the board statistics counters.
1831 ************************************************************************/
1832void
1833ixv_update_stats(struct adapter *adapter)
1834{
1835 struct ixgbe_hw *hw = &adapter->hw;
1836 struct ixgbevf_hw_stats *stats = &adapter->stats.vf;
1837
1838 UPDATE_STAT_32(IXGBE_VFGPRC, adapter->stats.vf.last_vfgprc,
1839 adapter->stats.vf.vfgprc);
1840 UPDATE_STAT_32(IXGBE_VFGPTC, adapter->stats.vf.last_vfgptc,
1841 adapter->stats.vf.vfgptc);
1842 UPDATE_STAT_36(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
1843 adapter->stats.vf.last_vfgorc, adapter->stats.vf.vfgorc);
1844 UPDATE_STAT_36(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
1845 adapter->stats.vf.last_vfgotc, adapter->stats.vf.vfgotc);
1846 UPDATE_STAT_32(IXGBE_VFMPRC, adapter->stats.vf.last_vfmprc,
1847 adapter->stats.vf.vfmprc);
1848
1849 /* Fill out the OS statistics structure */
1850 IXGBE_SET_IPACKETS(adapter, stats->vfgprc);
1851 IXGBE_SET_OPACKETS(adapter, stats->vfgptc);
1852 IXGBE_SET_IBYTES(adapter, stats->vfgorc);
1853 IXGBE_SET_OBYTES(adapter, stats->vfgotc);
1854 IXGBE_SET_IMCASTS(adapter, stats->vfmprc);
1855} /* ixv_update_stats */
1856
1857/************************************************************************
1858 * ixv_add_stats_sysctls - Add statistic sysctls for the VF.
1859 ************************************************************************/
1860static void
1861ixv_add_stats_sysctls(struct adapter *adapter)
1862{
1863 device_t dev = adapter->dev;
1864 struct tx_ring *txr = adapter->tx_rings;
1865 struct rx_ring *rxr = adapter->rx_rings;
1866 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev);
1867 struct sysctl_oid *tree = device_get_sysctl_tree(dev);
1868 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
1869 struct ixgbevf_hw_stats *stats = &adapter->stats.vf;
1870 struct sysctl_oid *stat_node, *queue_node;
1871 struct sysctl_oid_list *stat_list, *queue_list;
1872
1873#define QUEUE_NAME_LEN 32
1874 char namebuf[QUEUE_NAME_LEN];
1875
1876 /* Driver Statistics */
1877 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped",
1878 CTLFLAG_RD, &adapter->dropped_pkts, "Driver dropped packets");
1879 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_defrag_failed",
1880 CTLFLAG_RD, &adapter->mbuf_defrag_failed, "m_defrag() failed");
1881 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_events",
1882 CTLFLAG_RD, &adapter->watchdog_events, "Watchdog timeouts");
1883 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "link_irq",
1884 CTLFLAG_RD, &adapter->link_irq, "Link MSI-X IRQ Handled");
1885
1886 for (int i = 0; i < adapter->num_queues; i++, txr++) {
1887 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
1888 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
1889 CTLFLAG_RD, NULL, "Queue Name");
1890 queue_list = SYSCTL_CHILDREN(queue_node);
1891
1892 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "irqs",
1893 CTLFLAG_RD, &(adapter->queues[i].irqs), "IRQs on queue");
1894 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "no_tx_dma_setup",
1895 CTLFLAG_RD, &(txr->no_tx_dma_setup),
1896 "Driver Tx DMA failure in Tx");
1897 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tx_no_desc",
1898 CTLFLAG_RD, &(txr->no_desc_avail),
1899 "Not-enough-descriptors count: TX");
1900 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "tx_packets",
1901 CTLFLAG_RD, &(txr->total_packets), "TX Packets");
1902 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "br_drops",
1903 CTLFLAG_RD, &(txr->br->br_drops),
1904 "Packets dropped in buf_ring");
1905 }
1906
1907 for (int i = 0; i < adapter->num_queues; i++, rxr++) {
1908 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
1909 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf,
1910 CTLFLAG_RD, NULL, "Queue Name");
1911 queue_list = SYSCTL_CHILDREN(queue_node);
1912
1913 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_packets",
1914 CTLFLAG_RD, &(rxr->rx_packets), "RX packets");
1915 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_bytes",
1916 CTLFLAG_RD, &(rxr->rx_bytes), "RX bytes");
1917 SYSCTL_ADD_UQUAD(ctx, queue_list, OID_AUTO, "rx_discarded",
1918 CTLFLAG_RD, &(rxr->rx_discarded), "Discarded RX packets");
1919 }
1920
1921 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac",
1922 CTLFLAG_RD, NULL, "VF Statistics (read from HW registers)");
1923 stat_list = SYSCTL_CHILDREN(stat_node);
1924
1925 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_rcvd",
1926 CTLFLAG_RD, &stats->vfgprc, "Good Packets Received");
1927 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_rcvd",
1928 CTLFLAG_RD, &stats->vfgorc, "Good Octets Received");
1929 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_rcvd",
1930 CTLFLAG_RD, &stats->vfmprc, "Multicast Packets Received");
1931 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd",
1932 CTLFLAG_RD, &stats->vfgptc, "Good Packets Transmitted");
1933 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd",
1934 CTLFLAG_RD, &stats->vfgotc, "Good Octets Transmitted");
1935} /* ixv_add_stats_sysctls */
1936
1937/************************************************************************
1938 * ixv_set_sysctl_value
1939 ************************************************************************/
1940static void
1941ixv_set_sysctl_value(struct adapter *adapter, const char *name,
1942 const char *description, int *limit, int value)
1943{
1944 *limit = value;
1945 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev),
1946 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)),
1947 OID_AUTO, name, CTLFLAG_RW, limit, value, description);
1948} /* ixv_set_sysctl_value */
1949
1950/************************************************************************
1951 * ixv_print_debug_info
1952 *
1953 * Called only when em_display_debug_stats is enabled.
1954 * Provides a way to take a look at important statistics
1955 * maintained by the driver and hardware.
1956 ************************************************************************/
1957static void
1958ixv_print_debug_info(struct adapter *adapter)
1959{
1960 device_t dev = adapter->dev;
1961 struct ixgbe_hw *hw = &adapter->hw;
1962 struct ix_queue *que = adapter->queues;
1963 struct rx_ring *rxr;
1964 struct tx_ring *txr;
1965 struct lro_ctrl *lro;
1966
1967 device_printf(dev, "Error Byte Count = %u \n",
1968 IXGBE_READ_REG(hw, IXGBE_ERRBC));
1969
1970 for (int i = 0; i < adapter->num_queues; i++, que++) {
1971 txr = que->txr;
1972 rxr = que->rxr;
1973 lro = &rxr->lro;
1974 device_printf(dev, "QUE(%d) IRQs Handled: %lu\n",
1975 que->msix, (long)que->irqs);
1976 device_printf(dev, "RX(%d) Packets Received: %lld\n",
1977 rxr->me, (long long)rxr->rx_packets);
1978 device_printf(dev, "RX(%d) Bytes Received: %lu\n",
1979 rxr->me, (long)rxr->rx_bytes);
1980 device_printf(dev, "RX(%d) LRO Queued= %lld\n",
1981 rxr->me, (long long)lro->lro_queued);
1982 device_printf(dev, "RX(%d) LRO Flushed= %lld\n",
1983 rxr->me, (long long)lro->lro_flushed);
1984 device_printf(dev, "TX(%d) Packets Sent: %lu\n",
1985 txr->me, (long)txr->total_packets);
1986 device_printf(dev, "TX(%d) NO Desc Avail: %lu\n",
1987 txr->me, (long)txr->no_desc_avail);
1988 }
1989
1990 device_printf(dev, "MBX IRQ Handled: %lu\n", (long)adapter->link_irq);
1991} /* ixv_print_debug_info */
1992
1993/************************************************************************
1994 * ixv_sysctl_debug
1995 ************************************************************************/
1996static int
1997ixv_sysctl_debug(SYSCTL_HANDLER_ARGS)
1998{
1999 struct adapter *adapter;
2000 int error, result;
2001
2002 result = -1;
2003 error = sysctl_handle_int(oidp, &result, 0, req);
2004
2005 if (error || !req->newptr)
2006 return (error);
2007
2008 if (result == 1) {
2009 adapter = (struct adapter *)arg1;
2010 ixv_print_debug_info(adapter);
2011 }
2012
2013 return error;
2014} /* ixv_sysctl_debug */
2015
2016/************************************************************************
2017 * ixv_init_device_features
2018 ************************************************************************/
2019static void
2020ixv_init_device_features(struct adapter *adapter)
2021{
2022 adapter->feat_cap = IXGBE_FEATURE_NETMAP
2023 | IXGBE_FEATURE_VF
2024 | IXGBE_FEATURE_RSS
2025 | IXGBE_FEATURE_LEGACY_TX;
2026
2027 /* A tad short on feature flags for VFs, atm. */
2028 switch (adapter->hw.mac.type) {
2029 case ixgbe_mac_82599_vf:
2030 break;
2031 case ixgbe_mac_X540_vf:
2032 break;
2033 case ixgbe_mac_X550_vf:
2034 case ixgbe_mac_X550EM_x_vf:
2035 case ixgbe_mac_X550EM_a_vf:
2036 adapter->feat_cap |= IXGBE_FEATURE_NEEDS_CTXD;
2037 break;
2038 default:
2039 break;
2040 }
2041
2042 /* Enabled by default... */
2043 /* Is a virtual function (VF) */
2044 if (adapter->feat_cap & IXGBE_FEATURE_VF)
2045 adapter->feat_en |= IXGBE_FEATURE_VF;
2046 /* Netmap */
2047 if (adapter->feat_cap & IXGBE_FEATURE_NETMAP)
2048 adapter->feat_en |= IXGBE_FEATURE_NETMAP;
2049 /* Receive-Side Scaling (RSS) */
2050 if (adapter->feat_cap & IXGBE_FEATURE_RSS)
2051 adapter->feat_en |= IXGBE_FEATURE_RSS;
2052 /* Needs advanced context descriptor regardless of offloads req'd */
2053 if (adapter->feat_cap & IXGBE_FEATURE_NEEDS_CTXD)
2054 adapter->feat_en |= IXGBE_FEATURE_NEEDS_CTXD;
2055
2056 /* Enabled via sysctl... */
2057 /* Legacy (single queue) transmit */
2058 if ((adapter->feat_cap & IXGBE_FEATURE_LEGACY_TX) &&
2059 ixv_enable_legacy_tx)
2060 adapter->feat_en |= IXGBE_FEATURE_LEGACY_TX;
2061} /* ixv_init_device_features */
2062
2063/************************************************************************
2064 * ixv_shutdown - Shutdown entry point
2065 ************************************************************************/
2066static int
2067ixv_shutdown(device_t dev)
2068{
2069 struct adapter *adapter = device_get_softc(dev);
2070 IXGBE_CORE_LOCK(adapter);
2071 ixv_stop(adapter);
2072 IXGBE_CORE_UNLOCK(adapter);
2073
2074 return (0);
2075} /* ixv_shutdown */
2076
2077
2078/************************************************************************
2079 * ixv_ioctl - Ioctl entry point
2080 *
2081 * Called when the user wants to configure the interface.
2082 *
2083 * return 0 on success, positive on failure
2084 ************************************************************************/
2085static int
2086ixv_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
2087{
2088 struct adapter *adapter = ifp->if_softc;
2089 struct ifreq *ifr = (struct ifreq *)data;
2090#if defined(INET) || defined(INET6)
2091 struct ifaddr *ifa = (struct ifaddr *)data;
2092 bool avoid_reset = FALSE;
2093#endif
2094 int error = 0;
2095
2096 switch (command) {
2097
2098 case SIOCSIFADDR:
2099#ifdef INET
2100 if (ifa->ifa_addr->sa_family == AF_INET)
2101 avoid_reset = TRUE;
2102#endif
2103#ifdef INET6
2104 if (ifa->ifa_addr->sa_family == AF_INET6)
2105 avoid_reset = TRUE;
2106#endif
2107#if defined(INET) || defined(INET6)
2108 /*
2109 * Calling init results in link renegotiation,
2110 * so we avoid doing it when possible.
2111 */
2112 if (avoid_reset) {
2113 ifp->if_flags |= IFF_UP;
2114 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
2115 ixv_init(adapter);
2116 if (!(ifp->if_flags & IFF_NOARP))
2117 arp_ifinit(ifp, ifa);
2118 } else
2119 error = ether_ioctl(ifp, command, data);
2120 break;
2121#endif
2122 case SIOCSIFMTU:
2123 IOCTL_DEBUGOUT("ioctl: SIOCSIFMTU (Set Interface MTU)");
2124 if (ifr->ifr_mtu > IXGBE_MAX_MTU) {
2125 error = EINVAL;
2126 } else {
2127 IXGBE_CORE_LOCK(adapter);
2128 ifp->if_mtu = ifr->ifr_mtu;
2129 adapter->max_frame_size = ifp->if_mtu + IXGBE_MTU_HDR;
2130 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2131 ixv_init_locked(adapter);
2132 IXGBE_CORE_UNLOCK(adapter);
2133 }
2134 break;
2135 case SIOCSIFFLAGS:
2136 IOCTL_DEBUGOUT("ioctl: SIOCSIFFLAGS (Set Interface Flags)");
2137 IXGBE_CORE_LOCK(adapter);
2138 if (ifp->if_flags & IFF_UP) {
2139 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
2140 ixv_init_locked(adapter);
2141 } else
2142 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2143 ixv_stop(adapter);
2144 adapter->if_flags = ifp->if_flags;
2145 IXGBE_CORE_UNLOCK(adapter);
2146 break;
2147 case SIOCADDMULTI:
2148 case SIOCDELMULTI:
2149 IOCTL_DEBUGOUT("ioctl: SIOC(ADD|DEL)MULTI");
2150 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2151 IXGBE_CORE_LOCK(adapter);
2152 ixv_disable_intr(adapter);
2153 ixv_set_multi(adapter);
2154 ixv_enable_intr(adapter);
2155 IXGBE_CORE_UNLOCK(adapter);
2156 }
2157 break;
2158 case SIOCSIFMEDIA:
2159 case SIOCGIFMEDIA:
2160 IOCTL_DEBUGOUT("ioctl: SIOCxIFMEDIA (Get/Set Interface Media)");
2161 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command);
2162 break;
2163 case SIOCSIFCAP:
2164 {
2165 int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2166 IOCTL_DEBUGOUT("ioctl: SIOCSIFCAP (Set Capabilities)");
2167 if (mask & IFCAP_HWCSUM)
2168 ifp->if_capenable ^= IFCAP_HWCSUM;
2169 if (mask & IFCAP_TSO4)
2170 ifp->if_capenable ^= IFCAP_TSO4;
2171 if (mask & IFCAP_LRO)
2172 ifp->if_capenable ^= IFCAP_LRO;
2173 if (mask & IFCAP_VLAN_HWTAGGING)
2174 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2175 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2176 IXGBE_CORE_LOCK(adapter);
2177 ixv_init_locked(adapter);
2178 IXGBE_CORE_UNLOCK(adapter);
2179 }
2180 VLAN_CAPABILITIES(ifp);
2181 break;
2182 }
2183
2184 default:
2185 IOCTL_DEBUGOUT1("ioctl: UNKNOWN (0x%X)\n", (int)command);
2186 error = ether_ioctl(ifp, command, data);
2187 break;
2188 }
2189
2190 return (error);
2191} /* ixv_ioctl */
2192
2193/************************************************************************
2194 * ixv_init
2195 ************************************************************************/
2196static void
2197ixv_init(void *arg)
2198{
2199 struct adapter *adapter = arg;
2200
2201 IXGBE_CORE_LOCK(adapter);
2202 ixv_init_locked(adapter);
2203 IXGBE_CORE_UNLOCK(adapter);
2204
2205 return;
2206} /* ixv_init */
2207
2208
2209/************************************************************************
2210 * ixv_handle_que
2211 ************************************************************************/
2212static void
2213ixv_handle_que(void *context, int pending)
2214{
2215 struct ix_queue *que = context;
2216 struct adapter *adapter = que->adapter;
2217 struct tx_ring *txr = que->txr;
2218 struct ifnet *ifp = adapter->ifp;
2219 bool more;
2220
2221 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
2222 more = ixgbe_rxeof(que);
2223 IXGBE_TX_LOCK(txr);
2224 ixgbe_txeof(txr);
2225 if (!ixv_ring_empty(ifp, txr->br))
2226 ixv_start_locked(ifp, txr);
2227 IXGBE_TX_UNLOCK(txr);
2228 if (more) {
2229 taskqueue_enqueue(que->tq, &que->que_task);
2230 return;
2231 }
2232 }
2233
2234 /* Re-enable this interrupt */
2235 ixv_enable_queue(adapter, que->msix);
2236
2237 return;
2238} /* ixv_handle_que */
2239
2240/************************************************************************
2241 * ixv_allocate_msix - Setup MSI-X Interrupt resources and handlers
2242 ************************************************************************/
2243static int
2244ixv_allocate_msix(struct adapter *adapter)
2245{
2246 device_t dev = adapter->dev;
2247 struct ix_queue *que = adapter->queues;
2248 struct tx_ring *txr = adapter->tx_rings;
2249 int error, msix_ctrl, rid, vector = 0;
2250
2251 for (int i = 0; i < adapter->num_queues; i++, vector++, que++, txr++) {
2252 rid = vector + 1;
2253 que->res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
2254 RF_SHAREABLE | RF_ACTIVE);
2255 if (que->res == NULL) {
2256 device_printf(dev, "Unable to allocate bus resource: que interrupt [%d]\n",
2257 vector);
2258 return (ENXIO);
2259 }
2260 /* Set the handler function */
2261 error = bus_setup_intr(dev, que->res,
2262 INTR_TYPE_NET | INTR_MPSAFE, NULL,
2263 ixv_msix_que, que, &que->tag);
2264 if (error) {
2265 que->res = NULL;
2266 device_printf(dev, "Failed to register QUE handler");
2267 return (error);
2268 }
2269#if __FreeBSD_version >= 800504
2270 bus_describe_intr(dev, que->res, que->tag, "que %d", i);
2271#endif
2272 que->msix = vector;
2273 adapter->active_queues |= (u64)(1 << que->msix);
2274 /*
2275 * Bind the MSI-X vector, and thus the
2276 * ring to the corresponding CPU.
2277 */
2278 if (adapter->num_queues > 1)
2279 bus_bind_intr(dev, que->res, i);
2280 TASK_INIT(&txr->txq_task, 0, ixgbe_deferred_mq_start, txr);
2281 TASK_INIT(&que->que_task, 0, ixv_handle_que, que);
2282 que->tq = taskqueue_create_fast("ixv_que", M_NOWAIT,
2283 taskqueue_thread_enqueue, &que->tq);
2284 taskqueue_start_threads(&que->tq, 1, PI_NET, "%s que",
2285 device_get_nameunit(adapter->dev));
2286 }
2287
2288 /* and Mailbox */
2289 rid = vector + 1;
2290 adapter->res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
2291 RF_SHAREABLE | RF_ACTIVE);
2292 if (!adapter->res) {
2293 device_printf(dev,
2294 "Unable to allocate bus resource: MBX interrupt [%d]\n",
2295 rid);
2296 return (ENXIO);
2297 }
2298 /* Set the mbx handler function */
2299 error = bus_setup_intr(dev, adapter->res, INTR_TYPE_NET | INTR_MPSAFE,
2300 NULL, ixv_msix_mbx, adapter, &adapter->tag);
2301 if (error) {
2302 adapter->res = NULL;
2303 device_printf(dev, "Failed to register LINK handler");
2304 return (error);
2305 }
2306#if __FreeBSD_version >= 800504
2307 bus_describe_intr(dev, adapter->res, adapter->tag, "mbx");
2308#endif
2309 adapter->vector = vector;
2310 /* Tasklets for Mailbox */
2311 TASK_INIT(&adapter->link_task, 0, ixv_handle_link, adapter);
2312 adapter->tq = taskqueue_create_fast("ixv_mbx", M_NOWAIT,
2313 taskqueue_thread_enqueue, &adapter->tq);
2314 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s mbxq",
2315 device_get_nameunit(adapter->dev));
2316 /*
2317 * Due to a broken design QEMU will fail to properly
2318 * enable the guest for MSI-X unless the vectors in
2319 * the table are all set up, so we must rewrite the
2320 * ENABLE in the MSI-X control register again at this
2321 * point to cause it to successfully initialize us.
2322 */
2323 if (adapter->hw.mac.type == ixgbe_mac_82599_vf) {
2324 pci_find_cap(dev, PCIY_MSIX, &rid);
2325 rid += PCIR_MSIX_CTRL;
2326 msix_ctrl = pci_read_config(dev, rid, 2);
2327 msix_ctrl |= PCIM_MSIXCTRL_MSIX_ENABLE;
2328 pci_write_config(dev, rid, msix_ctrl, 2);
2329 }
2330
2331 return (0);
2332} /* ixv_allocate_msix */
2333
2334/************************************************************************
2335 * ixv_configure_interrupts - Setup MSI-X resources
2336 *
2337 * Note: The VF device MUST use MSI-X, there is no fallback.
2338 ************************************************************************/
2339static int
2340ixv_configure_interrupts(struct adapter *adapter)
2341{
2342 device_t dev = adapter->dev;
2343 int rid, want, msgs;
2344
2345 /* Must have at least 2 MSI-X vectors */
2346 msgs = pci_msix_count(dev);
2347 if (msgs < 2)
2348 goto out;
2349 rid = PCIR_BAR(3);
2350 adapter->msix_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
2351 RF_ACTIVE);
2352 if (adapter->msix_mem == NULL) {
2353 device_printf(adapter->dev, "Unable to map MSI-X table \n");
2354 goto out;
2355 }
2356
2357 /*
2358 * Want vectors for the queues,
2359 * plus an additional for mailbox.
2360 */
2361 want = adapter->num_queues + 1;
2362 if (want > msgs) {
2363 want = msgs;
2364 adapter->num_queues = msgs - 1;
2365 } else
2366 msgs = want;
2367 if ((pci_alloc_msix(dev, &msgs) == 0) && (msgs == want)) {
2368 device_printf(adapter->dev,
2369 "Using MSI-X interrupts with %d vectors\n", want);
2370 /* reflect correct sysctl value */
2371 ixv_num_queues = adapter->num_queues;
2372
2373 return (0);
2374 }
2375 /* Release in case alloc was insufficient */
2376 pci_release_msi(dev);
2377out:
2378 if (adapter->msix_mem != NULL) {
2379 bus_release_resource(dev, SYS_RES_MEMORY, rid,
2380 adapter->msix_mem);
2381 adapter->msix_mem = NULL;
2382 }
2383 device_printf(adapter->dev, "MSI-X config error\n");
2384
2385 return (ENXIO);
2386} /* ixv_configure_interrupts */
2387
2388
2389/************************************************************************
2390 * ixv_handle_link - Tasklet handler for MSI-X MBX interrupts
2391 *
2392 * Done outside of interrupt context since the driver might sleep
2393 ************************************************************************/
2394static void
2395ixv_handle_link(void *context, int pending)
2396{
2397 struct adapter *adapter = context;
2398
2399 adapter->hw.mac.ops.check_link(&adapter->hw, &adapter->link_speed,
2400 &adapter->link_up, FALSE);
2401 ixv_update_link_status(adapter);
2402} /* ixv_handle_link */
2403
2404/************************************************************************
2405 * ixv_check_link - Used in the local timer to poll for link changes
2406 ************************************************************************/
2407static void
2408ixv_check_link(struct adapter *adapter)
2409{
2410 adapter->hw.mac.get_link_status = TRUE;
2411
2412 adapter->hw.mac.ops.check_link(&adapter->hw, &adapter->link_speed,
2413 &adapter->link_up, FALSE);
2414 ixv_update_link_status(adapter);
2415} /* ixv_check_link */
2416