1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2010 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
29 /******************************************************************************
30 Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code
31 ******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
35 #include <linux/netdevice.h>
36 #include <linux/vmalloc.h>
37 #include <linux/string.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/ethtool.h>
46 #include <linux/if_vlan.h>
50 char ixgbevf_driver_name[] = "ixgbevf";
51 static const char ixgbevf_driver_string[] =
52 "Intel(R) 82599 Virtual Function";
54 #define DRV_VERSION "1.1.0-k0"
55 const char ixgbevf_driver_version[] = DRV_VERSION;
56 static char ixgbevf_copyright[] =
57 "Copyright (c) 2009 - 2010 Intel Corporation.";
59 static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
60 [board_82599_vf] = &ixgbevf_82599_vf_info,
61 [board_X540_vf] = &ixgbevf_X540_vf_info,
64 /* ixgbevf_pci_tbl - PCI Device ID Table
66 * Wildcard entries (PCI_ANY_ID) should come last
67 * Last entry must be all 0s
69 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
70 * Class, Class Mask, private data (not used) }
72 static struct pci_device_id ixgbevf_pci_tbl[] = {
73 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF),
75 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF),
78 /* required last entry */
81 MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl);
83 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
84 MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
85 MODULE_LICENSE("GPL");
86 MODULE_VERSION(DRV_VERSION);
88 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
91 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector);
92 static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
95 static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw,
96 struct ixgbevf_ring *rx_ring,
100 * Force memory writes to complete before letting h/w
101 * know there are new descriptors to fetch. (Only
102 * applicable for weak-ordered memory model archs,
106 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val);
110 * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors
111 * @adapter: pointer to adapter struct
112 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
113 * @queue: queue to map the corresponding interrupt to
114 * @msix_vector: the vector to map to the corresponding queue
117 static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction,
118 u8 queue, u8 msix_vector)
121 struct ixgbe_hw *hw = &adapter->hw;
122 if (direction == -1) {
124 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
125 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
128 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
130 /* tx or rx causes */
131 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
132 index = ((16 * (queue & 1)) + (8 * direction));
133 ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1));
134 ivar &= ~(0xFF << index);
135 ivar |= (msix_vector << index);
136 IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar);
140 static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter,
141 struct ixgbevf_tx_buffer
144 if (tx_buffer_info->dma) {
145 if (tx_buffer_info->mapped_as_page)
146 dma_unmap_page(&adapter->pdev->dev,
148 tx_buffer_info->length,
151 dma_unmap_single(&adapter->pdev->dev,
153 tx_buffer_info->length,
155 tx_buffer_info->dma = 0;
157 if (tx_buffer_info->skb) {
158 dev_kfree_skb_any(tx_buffer_info->skb);
159 tx_buffer_info->skb = NULL;
161 tx_buffer_info->time_stamp = 0;
162 /* tx_buffer_info must be completely set up in the transmit path */
165 static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter,
166 struct ixgbevf_ring *tx_ring,
169 struct ixgbe_hw *hw = &adapter->hw;
172 /* Detect a transmit hang in hardware, this serializes the
173 * check with the clearing of time_stamp and movement of eop */
174 head = readl(hw->hw_addr + tx_ring->head);
175 tail = readl(hw->hw_addr + tx_ring->tail);
176 adapter->detect_tx_hung = false;
177 if ((head != tail) &&
178 tx_ring->tx_buffer_info[eop].time_stamp &&
179 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) {
180 /* detected Tx unit hang */
181 union ixgbe_adv_tx_desc *tx_desc;
182 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
183 printk(KERN_ERR "Detected Tx Unit Hang\n"
185 " TDH, TDT <%x>, <%x>\n"
186 " next_to_use <%x>\n"
187 " next_to_clean <%x>\n"
188 "tx_buffer_info[next_to_clean]\n"
189 " time_stamp <%lx>\n"
191 tx_ring->queue_index,
193 tx_ring->next_to_use, eop,
194 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
201 #define IXGBE_MAX_TXD_PWR 14
202 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
204 /* Tx Descriptors needed, worst case */
205 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
206 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
208 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
209 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
211 #define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD)
214 static void ixgbevf_tx_timeout(struct net_device *netdev);
217 * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
218 * @adapter: board private structure
219 * @tx_ring: tx ring to clean
221 static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter,
222 struct ixgbevf_ring *tx_ring)
224 struct net_device *netdev = adapter->netdev;
225 struct ixgbe_hw *hw = &adapter->hw;
226 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
227 struct ixgbevf_tx_buffer *tx_buffer_info;
228 unsigned int i, eop, count = 0;
229 unsigned int total_bytes = 0, total_packets = 0;
231 i = tx_ring->next_to_clean;
232 eop = tx_ring->tx_buffer_info[i].next_to_watch;
233 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
235 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
236 (count < tx_ring->work_limit)) {
237 bool cleaned = false;
238 rmb(); /* read buffer_info after eop_desc */
239 for ( ; !cleaned; count++) {
241 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
242 tx_buffer_info = &tx_ring->tx_buffer_info[i];
243 cleaned = (i == eop);
244 skb = tx_buffer_info->skb;
246 if (cleaned && skb) {
247 unsigned int segs, bytecount;
249 /* gso_segs is currently only valid for tcp */
250 segs = skb_shinfo(skb)->gso_segs ?: 1;
251 /* multiply data chunks by size of headers */
252 bytecount = ((segs - 1) * skb_headlen(skb)) +
254 total_packets += segs;
255 total_bytes += bytecount;
258 ixgbevf_unmap_and_free_tx_resource(adapter,
261 tx_desc->wb.status = 0;
264 if (i == tx_ring->count)
268 eop = tx_ring->tx_buffer_info[i].next_to_watch;
269 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
272 tx_ring->next_to_clean = i;
274 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
275 if (unlikely(count && netif_carrier_ok(netdev) &&
276 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
277 /* Make sure that anybody stopping the queue after this
278 * sees the new next_to_clean.
282 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
283 !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
284 netif_wake_subqueue(netdev, tx_ring->queue_index);
285 ++adapter->restart_queue;
288 if (netif_queue_stopped(netdev) &&
289 !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
290 netif_wake_queue(netdev);
291 ++adapter->restart_queue;
296 if (adapter->detect_tx_hung) {
297 if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) {
298 /* schedule immediate reset if we believe we hung */
300 "tx hang %d detected, resetting adapter\n",
301 adapter->tx_timeout_count + 1);
302 ixgbevf_tx_timeout(adapter->netdev);
306 /* re-arm the interrupt */
307 if ((count >= tx_ring->work_limit) &&
308 (!test_bit(__IXGBEVF_DOWN, &adapter->state))) {
309 IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx);
312 tx_ring->total_bytes += total_bytes;
313 tx_ring->total_packets += total_packets;
315 netdev->stats.tx_bytes += total_bytes;
316 netdev->stats.tx_packets += total_packets;
318 return count < tx_ring->work_limit;
322 * ixgbevf_receive_skb - Send a completed packet up the stack
323 * @q_vector: structure containing interrupt and ring information
324 * @skb: packet to send up
325 * @status: hardware indication of status of receive
326 * @rx_ring: rx descriptor ring (for a specific queue) to setup
327 * @rx_desc: rx descriptor
329 static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
330 struct sk_buff *skb, u8 status,
331 struct ixgbevf_ring *ring,
332 union ixgbe_adv_rx_desc *rx_desc)
334 struct ixgbevf_adapter *adapter = q_vector->adapter;
335 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
336 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
339 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
340 if (adapter->vlgrp && is_vlan)
341 vlan_gro_receive(&q_vector->napi,
345 napi_gro_receive(&q_vector->napi, skb);
347 if (adapter->vlgrp && is_vlan)
348 ret = vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
355 * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
356 * @adapter: address of board private structure
357 * @status_err: hardware indication of status of receive
358 * @skb: skb currently being received and modified
360 static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter,
361 u32 status_err, struct sk_buff *skb)
363 skb_checksum_none_assert(skb);
365 /* Rx csum disabled */
366 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
369 /* if IP and error */
370 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
371 (status_err & IXGBE_RXDADV_ERR_IPE)) {
372 adapter->hw_csum_rx_error++;
376 if (!(status_err & IXGBE_RXD_STAT_L4CS))
379 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
380 adapter->hw_csum_rx_error++;
384 /* It must be a TCP or UDP packet with a valid checksum */
385 skb->ip_summed = CHECKSUM_UNNECESSARY;
386 adapter->hw_csum_rx_good++;
390 * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
391 * @adapter: address of board private structure
393 static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter,
394 struct ixgbevf_ring *rx_ring,
397 struct pci_dev *pdev = adapter->pdev;
398 union ixgbe_adv_rx_desc *rx_desc;
399 struct ixgbevf_rx_buffer *bi;
402 unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN;
404 i = rx_ring->next_to_use;
405 bi = &rx_ring->rx_buffer_info[i];
407 while (cleaned_count--) {
408 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
411 (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) {
413 bi->page = netdev_alloc_page(adapter->netdev);
415 adapter->alloc_rx_page_failed++;
420 /* use a half page if we're re-using */
421 bi->page_offset ^= (PAGE_SIZE / 2);
424 bi->page_dma = dma_map_page(&pdev->dev, bi->page,
432 skb = netdev_alloc_skb(adapter->netdev,
436 adapter->alloc_rx_buff_failed++;
441 * Make buffer alignment 2 beyond a 16 byte boundary
442 * this will result in a 16 byte aligned IP header after
443 * the 14 byte MAC header is removed
445 skb_reserve(skb, NET_IP_ALIGN);
450 bi->dma = dma_map_single(&pdev->dev, skb->data,
454 /* Refresh the desc even if buffer_addrs didn't change because
455 * each write-back erases this info. */
456 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
457 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
458 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
460 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
464 if (i == rx_ring->count)
466 bi = &rx_ring->rx_buffer_info[i];
470 if (rx_ring->next_to_use != i) {
471 rx_ring->next_to_use = i;
473 i = (rx_ring->count - 1);
475 ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i);
479 static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter,
483 struct ixgbe_hw *hw = &adapter->hw;
485 mask = (qmask & 0xFFFFFFFF);
486 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
489 static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
491 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
494 static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
496 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
499 static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
500 struct ixgbevf_ring *rx_ring,
501 int *work_done, int work_to_do)
503 struct ixgbevf_adapter *adapter = q_vector->adapter;
504 struct pci_dev *pdev = adapter->pdev;
505 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
506 struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer;
511 bool cleaned = false;
512 int cleaned_count = 0;
513 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
515 i = rx_ring->next_to_clean;
516 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
517 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
518 rx_buffer_info = &rx_ring->rx_buffer_info[i];
520 while (staterr & IXGBE_RXD_STAT_DD) {
522 if (*work_done >= work_to_do)
526 rmb(); /* read descriptor and rx_buffer_info after status DD */
527 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
528 hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc));
529 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
530 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
531 if (hdr_info & IXGBE_RXDADV_SPH)
532 adapter->rx_hdr_split++;
533 if (len > IXGBEVF_RX_HDR_SIZE)
534 len = IXGBEVF_RX_HDR_SIZE;
535 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
537 len = le16_to_cpu(rx_desc->wb.upper.length);
540 skb = rx_buffer_info->skb;
541 prefetch(skb->data - NET_IP_ALIGN);
542 rx_buffer_info->skb = NULL;
544 if (rx_buffer_info->dma) {
545 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
548 rx_buffer_info->dma = 0;
553 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
554 PAGE_SIZE / 2, DMA_FROM_DEVICE);
555 rx_buffer_info->page_dma = 0;
556 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
557 rx_buffer_info->page,
558 rx_buffer_info->page_offset,
561 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
562 (page_count(rx_buffer_info->page) != 1))
563 rx_buffer_info->page = NULL;
565 get_page(rx_buffer_info->page);
567 skb->len += upper_len;
568 skb->data_len += upper_len;
569 skb->truesize += upper_len;
573 if (i == rx_ring->count)
576 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
580 next_buffer = &rx_ring->rx_buffer_info[i];
582 if (!(staterr & IXGBE_RXD_STAT_EOP)) {
583 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
584 rx_buffer_info->skb = next_buffer->skb;
585 rx_buffer_info->dma = next_buffer->dma;
586 next_buffer->skb = skb;
587 next_buffer->dma = 0;
589 skb->next = next_buffer->skb;
590 skb->next->prev = skb;
592 adapter->non_eop_descs++;
596 /* ERR_MASK will only have valid bits if EOP set */
597 if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
598 dev_kfree_skb_irq(skb);
602 ixgbevf_rx_checksum(adapter, staterr, skb);
604 /* probably a little skewed due to removing CRC */
605 total_rx_bytes += skb->len;
609 * Work around issue of some types of VM to VM loop back
610 * packets not getting split correctly
612 if (staterr & IXGBE_RXD_STAT_LB) {
613 u32 header_fixup_len = skb_headlen(skb);
614 if (header_fixup_len < 14)
615 skb_push(skb, header_fixup_len);
617 skb->protocol = eth_type_trans(skb, adapter->netdev);
619 ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
622 rx_desc->wb.upper.status_error = 0;
624 /* return some buffers to hardware, one at a time is too slow */
625 if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) {
626 ixgbevf_alloc_rx_buffers(adapter, rx_ring,
631 /* use prefetched values */
633 rx_buffer_info = &rx_ring->rx_buffer_info[i];
635 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
638 rx_ring->next_to_clean = i;
639 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
642 ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
644 rx_ring->total_packets += total_rx_packets;
645 rx_ring->total_bytes += total_rx_bytes;
646 adapter->netdev->stats.rx_bytes += total_rx_bytes;
647 adapter->netdev->stats.rx_packets += total_rx_packets;
653 * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine
654 * @napi: napi struct with our devices info in it
655 * @budget: amount of work driver is allowed to do this pass, in packets
657 * This function is optimized for cleaning one queue only on a single
660 static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget)
662 struct ixgbevf_q_vector *q_vector =
663 container_of(napi, struct ixgbevf_q_vector, napi);
664 struct ixgbevf_adapter *adapter = q_vector->adapter;
665 struct ixgbevf_ring *rx_ring = NULL;
669 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
670 rx_ring = &(adapter->rx_ring[r_idx]);
672 ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
674 /* If all Rx work done, exit the polling mode */
675 if (work_done < budget) {
677 if (adapter->itr_setting & 1)
678 ixgbevf_set_itr_msix(q_vector);
679 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
680 ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx);
687 * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine
688 * @napi: napi struct with our devices info in it
689 * @budget: amount of work driver is allowed to do this pass, in packets
691 * This function will clean more than one rx queue associated with a
694 static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget)
696 struct ixgbevf_q_vector *q_vector =
697 container_of(napi, struct ixgbevf_q_vector, napi);
698 struct ixgbevf_adapter *adapter = q_vector->adapter;
699 struct ixgbevf_ring *rx_ring = NULL;
700 int work_done = 0, i;
704 /* attempt to distribute budget to each queue fairly, but don't allow
705 * the budget to go below 1 because we'll exit polling */
706 budget /= (q_vector->rxr_count ?: 1);
707 budget = max(budget, 1);
708 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
709 for (i = 0; i < q_vector->rxr_count; i++) {
710 rx_ring = &(adapter->rx_ring[r_idx]);
711 ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
712 enable_mask |= rx_ring->v_idx;
713 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
717 #ifndef HAVE_NETDEV_NAPI_LIST
718 if (!netif_running(adapter->netdev))
722 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
723 rx_ring = &(adapter->rx_ring[r_idx]);
725 /* If all Rx work done, exit the polling mode */
726 if (work_done < budget) {
728 if (adapter->itr_setting & 1)
729 ixgbevf_set_itr_msix(q_vector);
730 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
731 ixgbevf_irq_enable_queues(adapter, enable_mask);
739 * ixgbevf_configure_msix - Configure MSI-X hardware
740 * @adapter: board private structure
742 * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
745 static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter)
747 struct ixgbevf_q_vector *q_vector;
748 struct ixgbe_hw *hw = &adapter->hw;
749 int i, j, q_vectors, v_idx, r_idx;
752 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
755 * Populate the IVAR table and set the ITR values to the
756 * corresponding register.
758 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
759 q_vector = adapter->q_vector[v_idx];
760 /* XXX for_each_set_bit(...) */
761 r_idx = find_first_bit(q_vector->rxr_idx,
762 adapter->num_rx_queues);
764 for (i = 0; i < q_vector->rxr_count; i++) {
765 j = adapter->rx_ring[r_idx].reg_idx;
766 ixgbevf_set_ivar(adapter, 0, j, v_idx);
767 r_idx = find_next_bit(q_vector->rxr_idx,
768 adapter->num_rx_queues,
771 r_idx = find_first_bit(q_vector->txr_idx,
772 adapter->num_tx_queues);
774 for (i = 0; i < q_vector->txr_count; i++) {
775 j = adapter->tx_ring[r_idx].reg_idx;
776 ixgbevf_set_ivar(adapter, 1, j, v_idx);
777 r_idx = find_next_bit(q_vector->txr_idx,
778 adapter->num_tx_queues,
782 /* if this is a tx only vector halve the interrupt rate */
783 if (q_vector->txr_count && !q_vector->rxr_count)
784 q_vector->eitr = (adapter->eitr_param >> 1);
785 else if (q_vector->rxr_count)
787 q_vector->eitr = adapter->eitr_param;
789 ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr);
792 ixgbevf_set_ivar(adapter, -1, 1, v_idx);
794 /* set up to autoclear timer, and the vectors */
795 mask = IXGBE_EIMS_ENABLE_MASK;
796 mask &= ~IXGBE_EIMS_OTHER;
797 IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
804 latency_invalid = 255
808 * ixgbevf_update_itr - update the dynamic ITR value based on statistics
809 * @adapter: pointer to adapter
810 * @eitr: eitr setting (ints per sec) to give last timeslice
811 * @itr_setting: current throttle rate in ints/second
812 * @packets: the number of packets during this measurement interval
813 * @bytes: the number of bytes during this measurement interval
815 * Stores a new ITR value based on packets and byte
816 * counts during the last interrupt. The advantage of per interrupt
817 * computation is faster updates and more accurate ITR for the current
818 * traffic pattern. Constants in this function were computed
819 * based on theoretical maximum wire speed and thresholds were set based
820 * on testing data as well as attempting to minimize response time
821 * while increasing bulk throughput.
823 static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter,
824 u32 eitr, u8 itr_setting,
825 int packets, int bytes)
827 unsigned int retval = itr_setting;
832 goto update_itr_done;
835 /* simple throttlerate management
836 * 0-20MB/s lowest (100000 ints/s)
837 * 20-100MB/s low (20000 ints/s)
838 * 100-1249MB/s bulk (8000 ints/s)
840 /* what was last interrupt timeslice? */
841 timepassed_us = 1000000/eitr;
842 bytes_perint = bytes / timepassed_us; /* bytes/usec */
844 switch (itr_setting) {
846 if (bytes_perint > adapter->eitr_low)
847 retval = low_latency;
850 if (bytes_perint > adapter->eitr_high)
851 retval = bulk_latency;
852 else if (bytes_perint <= adapter->eitr_low)
853 retval = lowest_latency;
856 if (bytes_perint <= adapter->eitr_high)
857 retval = low_latency;
866 * ixgbevf_write_eitr - write VTEITR register in hardware specific way
867 * @adapter: pointer to adapter struct
868 * @v_idx: vector index into q_vector array
869 * @itr_reg: new value to be written in *register* format, not ints/s
871 * This function is made to be called by ethtool and by the driver
872 * when it needs to update VTEITR registers at runtime. Hardware
873 * specific quirks/differences are taken care of here.
875 static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
878 struct ixgbe_hw *hw = &adapter->hw;
880 itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg);
883 * set the WDIS bit to not clear the timer bits and cause an
884 * immediate assertion of the interrupt
886 itr_reg |= IXGBE_EITR_CNT_WDIS;
888 IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg);
891 static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector)
893 struct ixgbevf_adapter *adapter = q_vector->adapter;
895 u8 current_itr, ret_itr;
896 int i, r_idx, v_idx = q_vector->v_idx;
897 struct ixgbevf_ring *rx_ring, *tx_ring;
899 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
900 for (i = 0; i < q_vector->txr_count; i++) {
901 tx_ring = &(adapter->tx_ring[r_idx]);
902 ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
904 tx_ring->total_packets,
905 tx_ring->total_bytes);
906 /* if the result for this queue would decrease interrupt
907 * rate for this vector then use that result */
908 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
909 q_vector->tx_itr - 1 : ret_itr);
910 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
914 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
915 for (i = 0; i < q_vector->rxr_count; i++) {
916 rx_ring = &(adapter->rx_ring[r_idx]);
917 ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
919 rx_ring->total_packets,
920 rx_ring->total_bytes);
921 /* if the result for this queue would decrease interrupt
922 * rate for this vector then use that result */
923 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
924 q_vector->rx_itr - 1 : ret_itr);
925 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
929 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
931 switch (current_itr) {
932 /* counts and packets in update_itr are dependent on these numbers */
937 new_itr = 20000; /* aka hwitr = ~200 */
945 if (new_itr != q_vector->eitr) {
948 /* save the algorithm value here, not the smoothed one */
949 q_vector->eitr = new_itr;
950 /* do an exponential smoothing */
951 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
952 itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
953 ixgbevf_write_eitr(adapter, v_idx, itr_reg);
957 static irqreturn_t ixgbevf_msix_mbx(int irq, void *data)
959 struct net_device *netdev = data;
960 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
961 struct ixgbe_hw *hw = &adapter->hw;
965 eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS);
966 IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr);
968 if (!hw->mbx.ops.check_for_ack(hw)) {
970 * checking for the ack clears the PFACK bit. Place
971 * it back in the v2p_mailbox cache so that anyone
972 * polling for an ack will not miss it. Also
973 * avoid the read below because the code to read
974 * the mailbox will also clear the ack bit. This was
975 * causing lost acks. Just cache the bit and exit
978 hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFACK;
982 /* Not an ack interrupt, go ahead and read the message */
983 hw->mbx.ops.read(hw, &msg, 1);
985 if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG)
986 mod_timer(&adapter->watchdog_timer,
987 round_jiffies(jiffies + 1));
993 static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data)
995 struct ixgbevf_q_vector *q_vector = data;
996 struct ixgbevf_adapter *adapter = q_vector->adapter;
997 struct ixgbevf_ring *tx_ring;
1000 if (!q_vector->txr_count)
1003 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1004 for (i = 0; i < q_vector->txr_count; i++) {
1005 tx_ring = &(adapter->tx_ring[r_idx]);
1006 tx_ring->total_bytes = 0;
1007 tx_ring->total_packets = 0;
1008 ixgbevf_clean_tx_irq(adapter, tx_ring);
1009 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1013 if (adapter->itr_setting & 1)
1014 ixgbevf_set_itr_msix(q_vector);
1020 * ixgbevf_msix_clean_rx - single unshared vector rx clean (all queues)
1022 * @data: pointer to our q_vector struct for this interrupt vector
1024 static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data)
1026 struct ixgbevf_q_vector *q_vector = data;
1027 struct ixgbevf_adapter *adapter = q_vector->adapter;
1028 struct ixgbe_hw *hw = &adapter->hw;
1029 struct ixgbevf_ring *rx_ring;
1033 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1034 for (i = 0; i < q_vector->rxr_count; i++) {
1035 rx_ring = &(adapter->rx_ring[r_idx]);
1036 rx_ring->total_bytes = 0;
1037 rx_ring->total_packets = 0;
1038 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1042 if (!q_vector->rxr_count)
1045 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1046 rx_ring = &(adapter->rx_ring[r_idx]);
1047 /* disable interrupts on this vector only */
1048 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx);
1049 napi_schedule(&q_vector->napi);
1055 static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data)
1057 ixgbevf_msix_clean_rx(irq, data);
1058 ixgbevf_msix_clean_tx(irq, data);
1063 static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx,
1066 struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
1068 set_bit(r_idx, q_vector->rxr_idx);
1069 q_vector->rxr_count++;
1070 a->rx_ring[r_idx].v_idx = 1 << v_idx;
1073 static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx,
1076 struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
1078 set_bit(t_idx, q_vector->txr_idx);
1079 q_vector->txr_count++;
1080 a->tx_ring[t_idx].v_idx = 1 << v_idx;
1084 * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
1085 * @adapter: board private structure to initialize
1087 * This function maps descriptor rings to the queue-specific vectors
1088 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1089 * one vector per ring/queue, but on a constrained vector budget, we
1090 * group the rings as "efficiently" as possible. You would add new
1091 * mapping configurations in here.
1093 static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter)
1097 int rxr_idx = 0, txr_idx = 0;
1098 int rxr_remaining = adapter->num_rx_queues;
1099 int txr_remaining = adapter->num_tx_queues;
1104 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1107 * The ideal configuration...
1108 * We have enough vectors to map one per queue.
1110 if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
1111 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
1112 map_vector_to_rxq(adapter, v_start, rxr_idx);
1114 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
1115 map_vector_to_txq(adapter, v_start, txr_idx);
1120 * If we don't have enough vectors for a 1-to-1
1121 * mapping, we'll have to group them so there are
1122 * multiple queues per vector.
1124 /* Re-adjusting *qpv takes care of the remainder. */
1125 for (i = v_start; i < q_vectors; i++) {
1126 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
1127 for (j = 0; j < rqpv; j++) {
1128 map_vector_to_rxq(adapter, i, rxr_idx);
1133 for (i = v_start; i < q_vectors; i++) {
1134 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
1135 for (j = 0; j < tqpv; j++) {
1136 map_vector_to_txq(adapter, i, txr_idx);
1147 * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
1148 * @adapter: board private structure
1150 * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
1151 * interrupts from the kernel.
1153 static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter)
1155 struct net_device *netdev = adapter->netdev;
1156 irqreturn_t (*handler)(int, void *);
1157 int i, vector, q_vectors, err;
1160 /* Decrement for Other and TCP Timer vectors */
1161 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1163 #define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
1164 ? &ixgbevf_msix_clean_many : \
1165 (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \
1166 (_v)->txr_count ? &ixgbevf_msix_clean_tx : \
1168 for (vector = 0; vector < q_vectors; vector++) {
1169 handler = SET_HANDLER(adapter->q_vector[vector]);
1171 if (handler == &ixgbevf_msix_clean_rx) {
1172 sprintf(adapter->name[vector], "%s-%s-%d",
1173 netdev->name, "rx", ri++);
1174 } else if (handler == &ixgbevf_msix_clean_tx) {
1175 sprintf(adapter->name[vector], "%s-%s-%d",
1176 netdev->name, "tx", ti++);
1177 } else if (handler == &ixgbevf_msix_clean_many) {
1178 sprintf(adapter->name[vector], "%s-%s-%d",
1179 netdev->name, "TxRx", vector);
1181 /* skip this unused q_vector */
1184 err = request_irq(adapter->msix_entries[vector].vector,
1185 handler, 0, adapter->name[vector],
1186 adapter->q_vector[vector]);
1188 hw_dbg(&adapter->hw,
1189 "request_irq failed for MSIX interrupt "
1190 "Error: %d\n", err);
1191 goto free_queue_irqs;
1195 sprintf(adapter->name[vector], "%s:mbx", netdev->name);
1196 err = request_irq(adapter->msix_entries[vector].vector,
1197 &ixgbevf_msix_mbx, 0, adapter->name[vector], netdev);
1199 hw_dbg(&adapter->hw,
1200 "request_irq for msix_mbx failed: %d\n", err);
1201 goto free_queue_irqs;
1207 for (i = vector - 1; i >= 0; i--)
1208 free_irq(adapter->msix_entries[--vector].vector,
1209 &(adapter->q_vector[i]));
1210 pci_disable_msix(adapter->pdev);
1211 kfree(adapter->msix_entries);
1212 adapter->msix_entries = NULL;
1216 static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter)
1218 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1220 for (i = 0; i < q_vectors; i++) {
1221 struct ixgbevf_q_vector *q_vector = adapter->q_vector[i];
1222 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
1223 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
1224 q_vector->rxr_count = 0;
1225 q_vector->txr_count = 0;
1226 q_vector->eitr = adapter->eitr_param;
1231 * ixgbevf_request_irq - initialize interrupts
1232 * @adapter: board private structure
1234 * Attempts to configure interrupts using the best available
1235 * capabilities of the hardware and kernel.
1237 static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter)
1241 err = ixgbevf_request_msix_irqs(adapter);
1244 hw_dbg(&adapter->hw,
1245 "request_irq failed, Error %d\n", err);
1250 static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter)
1252 struct net_device *netdev = adapter->netdev;
1255 q_vectors = adapter->num_msix_vectors;
1259 free_irq(adapter->msix_entries[i].vector, netdev);
1262 for (; i >= 0; i--) {
1263 free_irq(adapter->msix_entries[i].vector,
1264 adapter->q_vector[i]);
1267 ixgbevf_reset_q_vectors(adapter);
1271 * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
1272 * @adapter: board private structure
1274 static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter)
1277 struct ixgbe_hw *hw = &adapter->hw;
1279 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0);
1281 IXGBE_WRITE_FLUSH(hw);
1283 for (i = 0; i < adapter->num_msix_vectors; i++)
1284 synchronize_irq(adapter->msix_entries[i].vector);
1288 * ixgbevf_irq_enable - Enable default interrupt generation settings
1289 * @adapter: board private structure
1291 static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter,
1292 bool queues, bool flush)
1294 struct ixgbe_hw *hw = &adapter->hw;
1298 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
1301 IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
1304 ixgbevf_irq_enable_queues(adapter, qmask);
1307 IXGBE_WRITE_FLUSH(hw);
1311 * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
1312 * @adapter: board private structure
1314 * Configure the Tx unit of the MAC after a reset.
1316 static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter)
1319 struct ixgbe_hw *hw = &adapter->hw;
1320 u32 i, j, tdlen, txctrl;
1322 /* Setup the HW Tx Head and Tail descriptor pointers */
1323 for (i = 0; i < adapter->num_tx_queues; i++) {
1324 struct ixgbevf_ring *ring = &adapter->tx_ring[i];
1327 tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
1328 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j),
1329 (tdba & DMA_BIT_MASK(32)));
1330 IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32));
1331 IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen);
1332 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0);
1333 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0);
1334 adapter->tx_ring[i].head = IXGBE_VFTDH(j);
1335 adapter->tx_ring[i].tail = IXGBE_VFTDT(j);
1336 /* Disable Tx Head Writeback RO bit, since this hoses
1337 * bookkeeping if things aren't delivered in order.
1339 txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j));
1340 txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
1341 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl);
1345 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1347 static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index)
1349 struct ixgbevf_ring *rx_ring;
1350 struct ixgbe_hw *hw = &adapter->hw;
1353 rx_ring = &adapter->rx_ring[index];
1355 srrctl = IXGBE_SRRCTL_DROP_EN;
1357 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
1358 u16 bufsz = IXGBEVF_RXBUFFER_2048;
1359 /* grow the amount we can receive on large page machines */
1360 if (bufsz < (PAGE_SIZE / 2))
1361 bufsz = (PAGE_SIZE / 2);
1362 /* cap the bufsz at our largest descriptor size */
1363 bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz);
1365 srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1366 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
1367 srrctl |= ((IXGBEVF_RX_HDR_SIZE <<
1368 IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
1369 IXGBE_SRRCTL_BSIZEHDR_MASK);
1371 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
1373 if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
1374 srrctl |= IXGBEVF_RXBUFFER_2048 >>
1375 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1377 srrctl |= rx_ring->rx_buf_len >>
1378 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
1380 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl);
1384 * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
1385 * @adapter: board private structure
1387 * Configure the Rx unit of the MAC after a reset.
1389 static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
1392 struct ixgbe_hw *hw = &adapter->hw;
1393 struct net_device *netdev = adapter->netdev;
1394 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
1399 /* Decide whether to use packet split mode or not */
1400 if (netdev->mtu > ETH_DATA_LEN) {
1401 if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE)
1402 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
1404 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
1406 if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE)
1407 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
1409 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
1412 /* Set the RX buffer length according to the mode */
1413 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
1414 /* PSRTYPE must be initialized in 82599 */
1415 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
1416 IXGBE_PSRTYPE_UDPHDR |
1417 IXGBE_PSRTYPE_IPV4HDR |
1418 IXGBE_PSRTYPE_IPV6HDR |
1419 IXGBE_PSRTYPE_L2HDR;
1420 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
1421 rx_buf_len = IXGBEVF_RX_HDR_SIZE;
1423 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
1424 if (netdev->mtu <= ETH_DATA_LEN)
1425 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1427 rx_buf_len = ALIGN(max_frame, 1024);
1430 rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
1431 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1432 * the Base and Length of the Rx Descriptor Ring */
1433 for (i = 0; i < adapter->num_rx_queues; i++) {
1434 rdba = adapter->rx_ring[i].dma;
1435 j = adapter->rx_ring[i].reg_idx;
1436 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j),
1437 (rdba & DMA_BIT_MASK(32)));
1438 IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32));
1439 IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen);
1440 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0);
1441 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0);
1442 adapter->rx_ring[i].head = IXGBE_VFRDH(j);
1443 adapter->rx_ring[i].tail = IXGBE_VFRDT(j);
1444 adapter->rx_ring[i].rx_buf_len = rx_buf_len;
1446 ixgbevf_configure_srrctl(adapter, j);
1450 static void ixgbevf_vlan_rx_register(struct net_device *netdev,
1451 struct vlan_group *grp)
1453 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1454 struct ixgbe_hw *hw = &adapter->hw;
1458 adapter->vlgrp = grp;
1460 for (i = 0; i < adapter->num_rx_queues; i++) {
1461 j = adapter->rx_ring[i].reg_idx;
1462 ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
1463 ctrl |= IXGBE_RXDCTL_VME;
1464 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), ctrl);
1468 static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1470 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1471 struct ixgbe_hw *hw = &adapter->hw;
1473 /* add VID to filter table */
1474 if (hw->mac.ops.set_vfta)
1475 hw->mac.ops.set_vfta(hw, vid, 0, true);
1478 static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1480 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1481 struct ixgbe_hw *hw = &adapter->hw;
1483 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
1484 ixgbevf_irq_disable(adapter);
1486 vlan_group_set_device(adapter->vlgrp, vid, NULL);
1488 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
1489 ixgbevf_irq_enable(adapter, true, true);
1491 /* remove VID from filter table */
1492 if (hw->mac.ops.set_vfta)
1493 hw->mac.ops.set_vfta(hw, vid, 0, false);
1496 static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)
1498 ixgbevf_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1500 if (adapter->vlgrp) {
1502 for (vid = 0; vid < VLAN_N_VID; vid++) {
1503 if (!vlan_group_get_device(adapter->vlgrp, vid))
1505 ixgbevf_vlan_rx_add_vid(adapter->netdev, vid);
1511 * ixgbevf_set_rx_mode - Multicast set
1512 * @netdev: network interface device structure
1514 * The set_rx_method entry point is called whenever the multicast address
1515 * list or the network interface flags are updated. This routine is
1516 * responsible for configuring the hardware for proper multicast mode.
1518 static void ixgbevf_set_rx_mode(struct net_device *netdev)
1520 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
1521 struct ixgbe_hw *hw = &adapter->hw;
1523 /* reprogram multicast list */
1524 if (hw->mac.ops.update_mc_addr_list)
1525 hw->mac.ops.update_mc_addr_list(hw, netdev);
1528 static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter)
1531 struct ixgbevf_q_vector *q_vector;
1532 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1534 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1535 struct napi_struct *napi;
1536 q_vector = adapter->q_vector[q_idx];
1537 if (!q_vector->rxr_count)
1539 napi = &q_vector->napi;
1540 if (q_vector->rxr_count > 1)
1541 napi->poll = &ixgbevf_clean_rxonly_many;
1547 static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter)
1550 struct ixgbevf_q_vector *q_vector;
1551 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1553 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1554 q_vector = adapter->q_vector[q_idx];
1555 if (!q_vector->rxr_count)
1557 napi_disable(&q_vector->napi);
1561 static void ixgbevf_configure(struct ixgbevf_adapter *adapter)
1563 struct net_device *netdev = adapter->netdev;
1566 ixgbevf_set_rx_mode(netdev);
1568 ixgbevf_restore_vlan(adapter);
1570 ixgbevf_configure_tx(adapter);
1571 ixgbevf_configure_rx(adapter);
1572 for (i = 0; i < adapter->num_rx_queues; i++) {
1573 struct ixgbevf_ring *ring = &adapter->rx_ring[i];
1574 ixgbevf_alloc_rx_buffers(adapter, ring, ring->count);
1575 ring->next_to_use = ring->count - 1;
1576 writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail);
1580 #define IXGBE_MAX_RX_DESC_POLL 10
1581 static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter,
1584 struct ixgbe_hw *hw = &adapter->hw;
1585 int j = adapter->rx_ring[rxr].reg_idx;
1588 for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
1589 if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
1594 if (k >= IXGBE_MAX_RX_DESC_POLL) {
1595 hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d "
1596 "not set within the polling period\n", rxr);
1599 ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr],
1600 (adapter->rx_ring[rxr].count - 1));
1603 static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter)
1605 /* Only save pre-reset stats if there are some */
1606 if (adapter->stats.vfgprc || adapter->stats.vfgptc) {
1607 adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc -
1608 adapter->stats.base_vfgprc;
1609 adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc -
1610 adapter->stats.base_vfgptc;
1611 adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc -
1612 adapter->stats.base_vfgorc;
1613 adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc -
1614 adapter->stats.base_vfgotc;
1615 adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc -
1616 adapter->stats.base_vfmprc;
1620 static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
1622 struct ixgbe_hw *hw = &adapter->hw;
1624 adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
1625 adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
1626 adapter->stats.last_vfgorc |=
1627 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
1628 adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
1629 adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
1630 adapter->stats.last_vfgotc |=
1631 (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
1632 adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
1634 adapter->stats.base_vfgprc = adapter->stats.last_vfgprc;
1635 adapter->stats.base_vfgorc = adapter->stats.last_vfgorc;
1636 adapter->stats.base_vfgptc = adapter->stats.last_vfgptc;
1637 adapter->stats.base_vfgotc = adapter->stats.last_vfgotc;
1638 adapter->stats.base_vfmprc = adapter->stats.last_vfmprc;
1641 static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
1643 struct net_device *netdev = adapter->netdev;
1644 struct ixgbe_hw *hw = &adapter->hw;
1646 int num_rx_rings = adapter->num_rx_queues;
1649 for (i = 0; i < adapter->num_tx_queues; i++) {
1650 j = adapter->tx_ring[i].reg_idx;
1651 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1652 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
1653 txdctl |= (8 << 16);
1654 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1657 for (i = 0; i < adapter->num_tx_queues; i++) {
1658 j = adapter->tx_ring[i].reg_idx;
1659 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1660 txdctl |= IXGBE_TXDCTL_ENABLE;
1661 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
1664 for (i = 0; i < num_rx_rings; i++) {
1665 j = adapter->rx_ring[i].reg_idx;
1666 rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
1667 rxdctl |= IXGBE_RXDCTL_ENABLE;
1668 if (hw->mac.type == ixgbe_mac_X540_vf) {
1669 rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK;
1670 rxdctl |= ((netdev->mtu + ETH_HLEN + ETH_FCS_LEN) |
1671 IXGBE_RXDCTL_RLPML_EN);
1673 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
1674 ixgbevf_rx_desc_queue_enable(adapter, i);
1677 ixgbevf_configure_msix(adapter);
1679 if (hw->mac.ops.set_rar) {
1680 if (is_valid_ether_addr(hw->mac.addr))
1681 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
1683 hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0);
1686 clear_bit(__IXGBEVF_DOWN, &adapter->state);
1687 ixgbevf_napi_enable_all(adapter);
1689 /* enable transmits */
1690 netif_tx_start_all_queues(netdev);
1692 ixgbevf_save_reset_stats(adapter);
1693 ixgbevf_init_last_counter_stats(adapter);
1695 /* bring the link up in the watchdog, this could race with our first
1696 * link up interrupt but shouldn't be a problem */
1697 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1698 adapter->link_check_timeout = jiffies;
1699 mod_timer(&adapter->watchdog_timer, jiffies);
1703 int ixgbevf_up(struct ixgbevf_adapter *adapter)
1706 struct ixgbe_hw *hw = &adapter->hw;
1708 ixgbevf_configure(adapter);
1710 err = ixgbevf_up_complete(adapter);
1712 /* clear any pending interrupts, may auto mask */
1713 IXGBE_READ_REG(hw, IXGBE_VTEICR);
1715 ixgbevf_irq_enable(adapter, true, true);
1721 * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
1722 * @adapter: board private structure
1723 * @rx_ring: ring to free buffers from
1725 static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter,
1726 struct ixgbevf_ring *rx_ring)
1728 struct pci_dev *pdev = adapter->pdev;
1732 if (!rx_ring->rx_buffer_info)
1735 /* Free all the Rx ring sk_buffs */
1736 for (i = 0; i < rx_ring->count; i++) {
1737 struct ixgbevf_rx_buffer *rx_buffer_info;
1739 rx_buffer_info = &rx_ring->rx_buffer_info[i];
1740 if (rx_buffer_info->dma) {
1741 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
1742 rx_ring->rx_buf_len,
1744 rx_buffer_info->dma = 0;
1746 if (rx_buffer_info->skb) {
1747 struct sk_buff *skb = rx_buffer_info->skb;
1748 rx_buffer_info->skb = NULL;
1750 struct sk_buff *this = skb;
1752 dev_kfree_skb(this);
1755 if (!rx_buffer_info->page)
1757 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
1758 PAGE_SIZE / 2, DMA_FROM_DEVICE);
1759 rx_buffer_info->page_dma = 0;
1760 put_page(rx_buffer_info->page);
1761 rx_buffer_info->page = NULL;
1762 rx_buffer_info->page_offset = 0;
1765 size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
1766 memset(rx_ring->rx_buffer_info, 0, size);
1768 /* Zero out the descriptor ring */
1769 memset(rx_ring->desc, 0, rx_ring->size);
1771 rx_ring->next_to_clean = 0;
1772 rx_ring->next_to_use = 0;
1775 writel(0, adapter->hw.hw_addr + rx_ring->head);
1777 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1781 * ixgbevf_clean_tx_ring - Free Tx Buffers
1782 * @adapter: board private structure
1783 * @tx_ring: ring to be cleaned
1785 static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter,
1786 struct ixgbevf_ring *tx_ring)
1788 struct ixgbevf_tx_buffer *tx_buffer_info;
1792 if (!tx_ring->tx_buffer_info)
1795 /* Free all the Tx ring sk_buffs */
1797 for (i = 0; i < tx_ring->count; i++) {
1798 tx_buffer_info = &tx_ring->tx_buffer_info[i];
1799 ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
1802 size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
1803 memset(tx_ring->tx_buffer_info, 0, size);
1805 memset(tx_ring->desc, 0, tx_ring->size);
1807 tx_ring->next_to_use = 0;
1808 tx_ring->next_to_clean = 0;
1811 writel(0, adapter->hw.hw_addr + tx_ring->head);
1813 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1817 * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
1818 * @adapter: board private structure
1820 static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter)
1824 for (i = 0; i < adapter->num_rx_queues; i++)
1825 ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]);
1829 * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
1830 * @adapter: board private structure
1832 static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter)
1836 for (i = 0; i < adapter->num_tx_queues; i++)
1837 ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1840 void ixgbevf_down(struct ixgbevf_adapter *adapter)
1842 struct net_device *netdev = adapter->netdev;
1843 struct ixgbe_hw *hw = &adapter->hw;
1847 /* signal that we are down to the interrupt handler */
1848 set_bit(__IXGBEVF_DOWN, &adapter->state);
1849 /* disable receives */
1851 netif_tx_disable(netdev);
1855 netif_tx_stop_all_queues(netdev);
1857 ixgbevf_irq_disable(adapter);
1859 ixgbevf_napi_disable_all(adapter);
1861 del_timer_sync(&adapter->watchdog_timer);
1862 /* can't call flush scheduled work here because it can deadlock
1863 * if linkwatch_event tries to acquire the rtnl_lock which we are
1865 while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK)
1868 /* disable transmits in the hardware now that interrupts are off */
1869 for (i = 0; i < adapter->num_tx_queues; i++) {
1870 j = adapter->tx_ring[i].reg_idx;
1871 txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
1872 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j),
1873 (txdctl & ~IXGBE_TXDCTL_ENABLE));
1876 netif_carrier_off(netdev);
1878 if (!pci_channel_offline(adapter->pdev))
1879 ixgbevf_reset(adapter);
1881 ixgbevf_clean_all_tx_rings(adapter);
1882 ixgbevf_clean_all_rx_rings(adapter);
1885 void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
1887 struct ixgbe_hw *hw = &adapter->hw;
1889 WARN_ON(in_interrupt());
1891 while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
1895 * Check if PF is up before re-init. If not then skip until
1896 * later when the PF is up and ready to service requests from
1897 * the VF via mailbox. If the VF is up and running then the
1898 * watchdog task will continue to schedule reset tasks until
1899 * the PF is up and running.
1901 if (!hw->mac.ops.reset_hw(hw)) {
1902 ixgbevf_down(adapter);
1903 ixgbevf_up(adapter);
1906 clear_bit(__IXGBEVF_RESETTING, &adapter->state);
1909 void ixgbevf_reset(struct ixgbevf_adapter *adapter)
1911 struct ixgbe_hw *hw = &adapter->hw;
1912 struct net_device *netdev = adapter->netdev;
1914 if (hw->mac.ops.reset_hw(hw))
1915 hw_dbg(hw, "PF still resetting\n");
1917 hw->mac.ops.init_hw(hw);
1919 if (is_valid_ether_addr(adapter->hw.mac.addr)) {
1920 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
1922 memcpy(netdev->perm_addr, adapter->hw.mac.addr,
1927 static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
1930 int err, vector_threshold;
1932 /* We'll want at least 3 (vector_threshold):
1935 * 3) Other (Link Status Change, etc.)
1937 vector_threshold = MIN_MSIX_COUNT;
1939 /* The more we get, the more we will assign to Tx/Rx Cleanup
1940 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1941 * Right now, we simply care about how many we'll get; we'll
1942 * set them up later while requesting irq's.
1944 while (vectors >= vector_threshold) {
1945 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1947 if (!err) /* Success in acquiring all requested vectors. */
1950 vectors = 0; /* Nasty failure, quit now */
1951 else /* err == number of vectors we should try again with */
1955 if (vectors < vector_threshold) {
1956 /* Can't allocate enough MSI-X interrupts? Oh well.
1957 * This just means we'll go with either a single MSI
1958 * vector or fall back to legacy interrupts.
1960 hw_dbg(&adapter->hw,
1961 "Unable to allocate MSI-X interrupts\n");
1962 kfree(adapter->msix_entries);
1963 adapter->msix_entries = NULL;
1966 * Adjust for only the vectors we'll use, which is minimum
1967 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
1968 * vectors we were allocated.
1970 adapter->num_msix_vectors = vectors;
1975 * ixgbevf_set_num_queues: Allocate queues for device, feature dependant
1976 * @adapter: board private structure to initialize
1978 * This is the top level queue allocation routine. The order here is very
1979 * important, starting with the "most" number of features turned on at once,
1980 * and ending with the smallest set of features. This way large combinations
1981 * can be allocated if they're turned on, and smaller combinations are the
1982 * fallthrough conditions.
1985 static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
1987 /* Start with base case */
1988 adapter->num_rx_queues = 1;
1989 adapter->num_tx_queues = 1;
1990 adapter->num_rx_pools = adapter->num_rx_queues;
1991 adapter->num_rx_queues_per_pool = 1;
1995 * ixgbevf_alloc_queues - Allocate memory for all rings
1996 * @adapter: board private structure to initialize
1998 * We allocate one ring per queue at run-time since we don't know the
1999 * number of queues at compile-time. The polling_netdev array is
2000 * intended for Multiqueue, but should work fine with a single queue.
2002 static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
2006 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
2007 sizeof(struct ixgbevf_ring), GFP_KERNEL);
2008 if (!adapter->tx_ring)
2009 goto err_tx_ring_allocation;
2011 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
2012 sizeof(struct ixgbevf_ring), GFP_KERNEL);
2013 if (!adapter->rx_ring)
2014 goto err_rx_ring_allocation;
2016 for (i = 0; i < adapter->num_tx_queues; i++) {
2017 adapter->tx_ring[i].count = adapter->tx_ring_count;
2018 adapter->tx_ring[i].queue_index = i;
2019 adapter->tx_ring[i].reg_idx = i;
2022 for (i = 0; i < adapter->num_rx_queues; i++) {
2023 adapter->rx_ring[i].count = adapter->rx_ring_count;
2024 adapter->rx_ring[i].queue_index = i;
2025 adapter->rx_ring[i].reg_idx = i;
2030 err_rx_ring_allocation:
2031 kfree(adapter->tx_ring);
2032 err_tx_ring_allocation:
2037 * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
2038 * @adapter: board private structure to initialize
2040 * Attempt to configure the interrupts using the best available
2041 * capabilities of the hardware and the kernel.
2043 static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
2046 int vector, v_budget;
2049 * It's easy to be greedy for MSI-X vectors, but it really
2050 * doesn't do us much good if we have a lot more vectors
2051 * than CPU's. So let's be conservative and only ask for
2052 * (roughly) twice the number of vectors as there are CPU's.
2054 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
2055 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
2057 /* A failure in MSI-X entry allocation isn't fatal, but it does
2058 * mean we disable MSI-X capabilities of the adapter. */
2059 adapter->msix_entries = kcalloc(v_budget,
2060 sizeof(struct msix_entry), GFP_KERNEL);
2061 if (!adapter->msix_entries) {
2066 for (vector = 0; vector < v_budget; vector++)
2067 adapter->msix_entries[vector].entry = vector;
2069 ixgbevf_acquire_msix_vectors(adapter, v_budget);
2076 * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
2077 * @adapter: board private structure to initialize
2079 * We allocate one q_vector per queue interrupt. If allocation fails we
2082 static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter)
2084 int q_idx, num_q_vectors;
2085 struct ixgbevf_q_vector *q_vector;
2087 int (*poll)(struct napi_struct *, int);
2089 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2090 napi_vectors = adapter->num_rx_queues;
2091 poll = &ixgbevf_clean_rxonly;
2093 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
2094 q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL);
2097 q_vector->adapter = adapter;
2098 q_vector->v_idx = q_idx;
2099 q_vector->eitr = adapter->eitr_param;
2100 if (q_idx < napi_vectors)
2101 netif_napi_add(adapter->netdev, &q_vector->napi,
2103 adapter->q_vector[q_idx] = q_vector;
2111 q_vector = adapter->q_vector[q_idx];
2112 netif_napi_del(&q_vector->napi);
2114 adapter->q_vector[q_idx] = NULL;
2120 * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
2121 * @adapter: board private structure to initialize
2123 * This function frees the memory allocated to the q_vectors. In addition if
2124 * NAPI is enabled it will delete any references to the NAPI struct prior
2125 * to freeing the q_vector.
2127 static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter)
2129 int q_idx, num_q_vectors;
2132 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2133 napi_vectors = adapter->num_rx_queues;
2135 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
2136 struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx];
2138 adapter->q_vector[q_idx] = NULL;
2139 if (q_idx < napi_vectors)
2140 netif_napi_del(&q_vector->napi);
2146 * ixgbevf_reset_interrupt_capability - Reset MSIX setup
2147 * @adapter: board private structure
2150 static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter)
2152 pci_disable_msix(adapter->pdev);
2153 kfree(adapter->msix_entries);
2154 adapter->msix_entries = NULL;
2158 * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
2159 * @adapter: board private structure to initialize
2162 static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter)
2166 /* Number of supported queues */
2167 ixgbevf_set_num_queues(adapter);
2169 err = ixgbevf_set_interrupt_capability(adapter);
2171 hw_dbg(&adapter->hw,
2172 "Unable to setup interrupt capabilities\n");
2173 goto err_set_interrupt;
2176 err = ixgbevf_alloc_q_vectors(adapter);
2178 hw_dbg(&adapter->hw, "Unable to allocate memory for queue "
2180 goto err_alloc_q_vectors;
2183 err = ixgbevf_alloc_queues(adapter);
2185 printk(KERN_ERR "Unable to allocate memory for queues\n");
2186 goto err_alloc_queues;
2189 hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, "
2190 "Tx Queue count = %u\n",
2191 (adapter->num_rx_queues > 1) ? "Enabled" :
2192 "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
2194 set_bit(__IXGBEVF_DOWN, &adapter->state);
2198 ixgbevf_free_q_vectors(adapter);
2199 err_alloc_q_vectors:
2200 ixgbevf_reset_interrupt_capability(adapter);
2206 * ixgbevf_sw_init - Initialize general software structures
2207 * (struct ixgbevf_adapter)
2208 * @adapter: board private structure to initialize
2210 * ixgbevf_sw_init initializes the Adapter private data structure.
2211 * Fields are initialized based on PCI device information and
2212 * OS network device settings (MTU size).
2214 static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
2216 struct ixgbe_hw *hw = &adapter->hw;
2217 struct pci_dev *pdev = adapter->pdev;
2220 /* PCI config space info */
2222 hw->vendor_id = pdev->vendor;
2223 hw->device_id = pdev->device;
2224 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2225 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2226 hw->subsystem_device_id = pdev->subsystem_device;
2228 hw->mbx.ops.init_params(hw);
2229 hw->mac.max_tx_queues = MAX_TX_QUEUES;
2230 hw->mac.max_rx_queues = MAX_RX_QUEUES;
2231 err = hw->mac.ops.reset_hw(hw);
2233 dev_info(&pdev->dev,
2234 "PF still in reset state, assigning new address\n");
2235 dev_hw_addr_random(adapter->netdev, hw->mac.addr);
2237 err = hw->mac.ops.init_hw(hw);
2239 printk(KERN_ERR "init_shared_code failed: %d\n", err);
2244 /* Enable dynamic interrupt throttling rates */
2245 adapter->eitr_param = 20000;
2246 adapter->itr_setting = 1;
2248 /* set defaults for eitr in MegaBytes */
2249 adapter->eitr_low = 10;
2250 adapter->eitr_high = 20;
2252 /* set default ring sizes */
2253 adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD;
2254 adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD;
2256 /* enable rx csum by default */
2257 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
2259 set_bit(__IXGBEVF_DOWN, &adapter->state);
2265 #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
2267 u32 current_counter = IXGBE_READ_REG(hw, reg); \
2268 if (current_counter < last_counter) \
2269 counter += 0x100000000LL; \
2270 last_counter = current_counter; \
2271 counter &= 0xFFFFFFFF00000000LL; \
2272 counter |= current_counter; \
2275 #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
2277 u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
2278 u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
2279 u64 current_counter = (current_counter_msb << 32) | \
2280 current_counter_lsb; \
2281 if (current_counter < last_counter) \
2282 counter += 0x1000000000LL; \
2283 last_counter = current_counter; \
2284 counter &= 0xFFFFFFF000000000LL; \
2285 counter |= current_counter; \
2288 * ixgbevf_update_stats - Update the board statistics counters.
2289 * @adapter: board private structure
2291 void ixgbevf_update_stats(struct ixgbevf_adapter *adapter)
2293 struct ixgbe_hw *hw = &adapter->hw;
2295 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc,
2296 adapter->stats.vfgprc);
2297 UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc,
2298 adapter->stats.vfgptc);
2299 UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
2300 adapter->stats.last_vfgorc,
2301 adapter->stats.vfgorc);
2302 UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
2303 adapter->stats.last_vfgotc,
2304 adapter->stats.vfgotc);
2305 UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc,
2306 adapter->stats.vfmprc);
2308 /* Fill out the OS statistics structure */
2309 adapter->netdev->stats.multicast = adapter->stats.vfmprc -
2310 adapter->stats.base_vfmprc;
2314 * ixgbevf_watchdog - Timer Call-back
2315 * @data: pointer to adapter cast into an unsigned long
2317 static void ixgbevf_watchdog(unsigned long data)
2319 struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data;
2320 struct ixgbe_hw *hw = &adapter->hw;
2325 * Do the watchdog outside of interrupt context due to the lovely
2326 * delays that some of the newer hardware requires
2329 if (test_bit(__IXGBEVF_DOWN, &adapter->state))
2330 goto watchdog_short_circuit;
2332 /* get one bit for every active tx/rx interrupt vector */
2333 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
2334 struct ixgbevf_q_vector *qv = adapter->q_vector[i];
2335 if (qv->rxr_count || qv->txr_count)
2339 IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics);
2341 watchdog_short_circuit:
2342 schedule_work(&adapter->watchdog_task);
2346 * ixgbevf_tx_timeout - Respond to a Tx Hang
2347 * @netdev: network interface device structure
2349 static void ixgbevf_tx_timeout(struct net_device *netdev)
2351 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2353 /* Do the reset outside of interrupt context */
2354 schedule_work(&adapter->reset_task);
2357 static void ixgbevf_reset_task(struct work_struct *work)
2359 struct ixgbevf_adapter *adapter;
2360 adapter = container_of(work, struct ixgbevf_adapter, reset_task);
2362 /* If we're already down or resetting, just bail */
2363 if (test_bit(__IXGBEVF_DOWN, &adapter->state) ||
2364 test_bit(__IXGBEVF_RESETTING, &adapter->state))
2367 adapter->tx_timeout_count++;
2369 ixgbevf_reinit_locked(adapter);
2373 * ixgbevf_watchdog_task - worker thread to bring link up
2374 * @work: pointer to work_struct containing our data
2376 static void ixgbevf_watchdog_task(struct work_struct *work)
2378 struct ixgbevf_adapter *adapter = container_of(work,
2379 struct ixgbevf_adapter,
2381 struct net_device *netdev = adapter->netdev;
2382 struct ixgbe_hw *hw = &adapter->hw;
2383 u32 link_speed = adapter->link_speed;
2384 bool link_up = adapter->link_up;
2386 adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
2389 * Always check the link on the watchdog because we have
2392 if (hw->mac.ops.check_link) {
2393 if ((hw->mac.ops.check_link(hw, &link_speed,
2394 &link_up, false)) != 0) {
2395 adapter->link_up = link_up;
2396 adapter->link_speed = link_speed;
2397 netif_carrier_off(netdev);
2398 netif_tx_stop_all_queues(netdev);
2399 schedule_work(&adapter->reset_task);
2403 /* always assume link is up, if no check link
2405 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
2408 adapter->link_up = link_up;
2409 adapter->link_speed = link_speed;
2412 if (!netif_carrier_ok(netdev)) {
2413 hw_dbg(&adapter->hw, "NIC Link is Up, %u Gbps\n",
2414 (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
2416 netif_carrier_on(netdev);
2417 netif_tx_wake_all_queues(netdev);
2419 /* Force detection of hung controller */
2420 adapter->detect_tx_hung = true;
2423 adapter->link_up = false;
2424 adapter->link_speed = 0;
2425 if (netif_carrier_ok(netdev)) {
2426 hw_dbg(&adapter->hw, "NIC Link is Down\n");
2427 netif_carrier_off(netdev);
2428 netif_tx_stop_all_queues(netdev);
2432 ixgbevf_update_stats(adapter);
2435 /* Force detection of hung controller every watchdog period */
2436 adapter->detect_tx_hung = true;
2438 /* Reset the timer */
2439 if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
2440 mod_timer(&adapter->watchdog_timer,
2441 round_jiffies(jiffies + (2 * HZ)));
2443 adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
2447 * ixgbevf_free_tx_resources - Free Tx Resources per Queue
2448 * @adapter: board private structure
2449 * @tx_ring: Tx descriptor ring for a specific queue
2451 * Free all transmit software resources
2453 void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter,
2454 struct ixgbevf_ring *tx_ring)
2456 struct pci_dev *pdev = adapter->pdev;
2458 ixgbevf_clean_tx_ring(adapter, tx_ring);
2460 vfree(tx_ring->tx_buffer_info);
2461 tx_ring->tx_buffer_info = NULL;
2463 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2466 tx_ring->desc = NULL;
2470 * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
2471 * @adapter: board private structure
2473 * Free all transmit software resources
2475 static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter)
2479 for (i = 0; i < adapter->num_tx_queues; i++)
2480 if (adapter->tx_ring[i].desc)
2481 ixgbevf_free_tx_resources(adapter,
2482 &adapter->tx_ring[i]);
2487 * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
2488 * @adapter: board private structure
2489 * @tx_ring: tx descriptor ring (for a specific queue) to setup
2491 * Return 0 on success, negative on failure
2493 int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter,
2494 struct ixgbevf_ring *tx_ring)
2496 struct pci_dev *pdev = adapter->pdev;
2499 size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
2500 tx_ring->tx_buffer_info = vzalloc(size);
2501 if (!tx_ring->tx_buffer_info)
2504 /* round up to nearest 4K */
2505 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
2506 tx_ring->size = ALIGN(tx_ring->size, 4096);
2508 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
2509 &tx_ring->dma, GFP_KERNEL);
2513 tx_ring->next_to_use = 0;
2514 tx_ring->next_to_clean = 0;
2515 tx_ring->work_limit = tx_ring->count;
2519 vfree(tx_ring->tx_buffer_info);
2520 tx_ring->tx_buffer_info = NULL;
2521 hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit "
2522 "descriptor ring\n");
2527 * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
2528 * @adapter: board private structure
2530 * If this function returns with an error, then it's possible one or
2531 * more of the rings is populated (while the rest are not). It is the
2532 * callers duty to clean those orphaned rings.
2534 * Return 0 on success, negative on failure
2536 static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
2540 for (i = 0; i < adapter->num_tx_queues; i++) {
2541 err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]);
2544 hw_dbg(&adapter->hw,
2545 "Allocation for Tx Queue %u failed\n", i);
2553 * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
2554 * @adapter: board private structure
2555 * @rx_ring: rx descriptor ring (for a specific queue) to setup
2557 * Returns 0 on success, negative on failure
2559 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter,
2560 struct ixgbevf_ring *rx_ring)
2562 struct pci_dev *pdev = adapter->pdev;
2565 size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
2566 rx_ring->rx_buffer_info = vzalloc(size);
2567 if (!rx_ring->rx_buffer_info) {
2568 hw_dbg(&adapter->hw,
2569 "Unable to vmalloc buffer memory for "
2570 "the receive descriptor ring\n");
2574 /* Round up to nearest 4K */
2575 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
2576 rx_ring->size = ALIGN(rx_ring->size, 4096);
2578 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
2579 &rx_ring->dma, GFP_KERNEL);
2581 if (!rx_ring->desc) {
2582 hw_dbg(&adapter->hw,
2583 "Unable to allocate memory for "
2584 "the receive descriptor ring\n");
2585 vfree(rx_ring->rx_buffer_info);
2586 rx_ring->rx_buffer_info = NULL;
2590 rx_ring->next_to_clean = 0;
2591 rx_ring->next_to_use = 0;
2599 * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
2600 * @adapter: board private structure
2602 * If this function returns with an error, then it's possible one or
2603 * more of the rings is populated (while the rest are not). It is the
2604 * callers duty to clean those orphaned rings.
2606 * Return 0 on success, negative on failure
2608 static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter)
2612 for (i = 0; i < adapter->num_rx_queues; i++) {
2613 err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]);
2616 hw_dbg(&adapter->hw,
2617 "Allocation for Rx Queue %u failed\n", i);
2624 * ixgbevf_free_rx_resources - Free Rx Resources
2625 * @adapter: board private structure
2626 * @rx_ring: ring to clean the resources from
2628 * Free all receive software resources
2630 void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter,
2631 struct ixgbevf_ring *rx_ring)
2633 struct pci_dev *pdev = adapter->pdev;
2635 ixgbevf_clean_rx_ring(adapter, rx_ring);
2637 vfree(rx_ring->rx_buffer_info);
2638 rx_ring->rx_buffer_info = NULL;
2640 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2643 rx_ring->desc = NULL;
2647 * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
2648 * @adapter: board private structure
2650 * Free all receive software resources
2652 static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter)
2656 for (i = 0; i < adapter->num_rx_queues; i++)
2657 if (adapter->rx_ring[i].desc)
2658 ixgbevf_free_rx_resources(adapter,
2659 &adapter->rx_ring[i]);
2663 * ixgbevf_open - Called when a network interface is made active
2664 * @netdev: network interface device structure
2666 * Returns 0 on success, negative value on failure
2668 * The open entry point is called when a network interface is made
2669 * active by the system (IFF_UP). At this point all resources needed
2670 * for transmit and receive operations are allocated, the interrupt
2671 * handler is registered with the OS, the watchdog timer is started,
2672 * and the stack is notified that the interface is ready.
2674 static int ixgbevf_open(struct net_device *netdev)
2676 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2677 struct ixgbe_hw *hw = &adapter->hw;
2680 /* disallow open during test */
2681 if (test_bit(__IXGBEVF_TESTING, &adapter->state))
2684 if (hw->adapter_stopped) {
2685 ixgbevf_reset(adapter);
2686 /* if adapter is still stopped then PF isn't up and
2687 * the vf can't start. */
2688 if (hw->adapter_stopped) {
2689 err = IXGBE_ERR_MBX;
2690 printk(KERN_ERR "Unable to start - perhaps the PF"
2691 " Driver isn't up yet\n");
2692 goto err_setup_reset;
2696 /* allocate transmit descriptors */
2697 err = ixgbevf_setup_all_tx_resources(adapter);
2701 /* allocate receive descriptors */
2702 err = ixgbevf_setup_all_rx_resources(adapter);
2706 ixgbevf_configure(adapter);
2709 * Map the Tx/Rx rings to the vectors we were allotted.
2710 * if request_irq will be called in this function map_rings
2711 * must be called *before* up_complete
2713 ixgbevf_map_rings_to_vectors(adapter);
2715 err = ixgbevf_up_complete(adapter);
2719 /* clear any pending interrupts, may auto mask */
2720 IXGBE_READ_REG(hw, IXGBE_VTEICR);
2721 err = ixgbevf_request_irq(adapter);
2725 ixgbevf_irq_enable(adapter, true, true);
2730 ixgbevf_down(adapter);
2732 ixgbevf_free_irq(adapter);
2734 ixgbevf_free_all_rx_resources(adapter);
2736 ixgbevf_free_all_tx_resources(adapter);
2737 ixgbevf_reset(adapter);
2745 * ixgbevf_close - Disables a network interface
2746 * @netdev: network interface device structure
2748 * Returns 0, this is not allowed to fail
2750 * The close entry point is called when an interface is de-activated
2751 * by the OS. The hardware is still under the drivers control, but
2752 * needs to be disabled. A global MAC reset is issued to stop the
2753 * hardware, and all transmit and receive resources are freed.
2755 static int ixgbevf_close(struct net_device *netdev)
2757 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
2759 ixgbevf_down(adapter);
2760 ixgbevf_free_irq(adapter);
2762 ixgbevf_free_all_tx_resources(adapter);
2763 ixgbevf_free_all_rx_resources(adapter);
2768 static int ixgbevf_tso(struct ixgbevf_adapter *adapter,
2769 struct ixgbevf_ring *tx_ring,
2770 struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
2772 struct ixgbe_adv_tx_context_desc *context_desc;
2775 struct ixgbevf_tx_buffer *tx_buffer_info;
2776 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
2777 u32 mss_l4len_idx, l4len;
2779 if (skb_is_gso(skb)) {
2780 if (skb_header_cloned(skb)) {
2781 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2785 l4len = tcp_hdrlen(skb);
2788 if (skb->protocol == htons(ETH_P_IP)) {
2789 struct iphdr *iph = ip_hdr(skb);
2792 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2796 adapter->hw_tso_ctxt++;
2797 } else if (skb_is_gso_v6(skb)) {
2798 ipv6_hdr(skb)->payload_len = 0;
2799 tcp_hdr(skb)->check =
2800 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2801 &ipv6_hdr(skb)->daddr,
2803 adapter->hw_tso6_ctxt++;
2806 i = tx_ring->next_to_use;
2808 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2809 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
2811 /* VLAN MACLEN IPLEN */
2812 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
2814 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
2815 vlan_macip_lens |= ((skb_network_offset(skb)) <<
2816 IXGBE_ADVTXD_MACLEN_SHIFT);
2817 *hdr_len += skb_network_offset(skb);
2819 (skb_transport_header(skb) - skb_network_header(skb));
2821 (skb_transport_header(skb) - skb_network_header(skb));
2822 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
2823 context_desc->seqnum_seed = 0;
2825 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2826 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
2827 IXGBE_ADVTXD_DTYP_CTXT);
2829 if (skb->protocol == htons(ETH_P_IP))
2830 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
2831 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
2832 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
2836 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
2837 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
2838 /* use index 1 for TSO */
2839 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
2840 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
2842 tx_buffer_info->time_stamp = jiffies;
2843 tx_buffer_info->next_to_watch = i;
2846 if (i == tx_ring->count)
2848 tx_ring->next_to_use = i;
2856 static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter,
2857 struct ixgbevf_ring *tx_ring,
2858 struct sk_buff *skb, u32 tx_flags)
2860 struct ixgbe_adv_tx_context_desc *context_desc;
2862 struct ixgbevf_tx_buffer *tx_buffer_info;
2863 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
2865 if (skb->ip_summed == CHECKSUM_PARTIAL ||
2866 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
2867 i = tx_ring->next_to_use;
2868 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2869 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
2871 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
2872 vlan_macip_lens |= (tx_flags &
2873 IXGBE_TX_FLAGS_VLAN_MASK);
2874 vlan_macip_lens |= (skb_network_offset(skb) <<
2875 IXGBE_ADVTXD_MACLEN_SHIFT);
2876 if (skb->ip_summed == CHECKSUM_PARTIAL)
2877 vlan_macip_lens |= (skb_transport_header(skb) -
2878 skb_network_header(skb));
2880 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
2881 context_desc->seqnum_seed = 0;
2883 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
2884 IXGBE_ADVTXD_DTYP_CTXT);
2886 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2887 switch (skb->protocol) {
2888 case __constant_htons(ETH_P_IP):
2889 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
2890 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2892 IXGBE_ADVTXD_TUCMD_L4T_TCP;
2894 case __constant_htons(ETH_P_IPV6):
2895 /* XXX what about other V6 headers?? */
2896 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2898 IXGBE_ADVTXD_TUCMD_L4T_TCP;
2901 if (unlikely(net_ratelimit())) {
2903 "partial checksum but "
2911 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
2912 /* use index zero for tx checksum offload */
2913 context_desc->mss_l4len_idx = 0;
2915 tx_buffer_info->time_stamp = jiffies;
2916 tx_buffer_info->next_to_watch = i;
2918 adapter->hw_csum_tx_good++;
2920 if (i == tx_ring->count)
2922 tx_ring->next_to_use = i;
2930 static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter,
2931 struct ixgbevf_ring *tx_ring,
2932 struct sk_buff *skb, u32 tx_flags,
2935 struct pci_dev *pdev = adapter->pdev;
2936 struct ixgbevf_tx_buffer *tx_buffer_info;
2938 unsigned int total = skb->len;
2939 unsigned int offset = 0, size;
2941 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
2945 i = tx_ring->next_to_use;
2947 len = min(skb_headlen(skb), total);
2949 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2950 size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
2952 tx_buffer_info->length = size;
2953 tx_buffer_info->mapped_as_page = false;
2954 tx_buffer_info->dma = dma_map_single(&adapter->pdev->dev,
2956 size, DMA_TO_DEVICE);
2957 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
2959 tx_buffer_info->time_stamp = jiffies;
2960 tx_buffer_info->next_to_watch = i;
2967 if (i == tx_ring->count)
2971 for (f = 0; f < nr_frags; f++) {
2972 struct skb_frag_struct *frag;
2974 frag = &skb_shinfo(skb)->frags[f];
2975 len = min((unsigned int)frag->size, total);
2976 offset = frag->page_offset;
2979 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2980 size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
2982 tx_buffer_info->length = size;
2983 tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
2988 tx_buffer_info->mapped_as_page = true;
2989 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
2991 tx_buffer_info->time_stamp = jiffies;
2992 tx_buffer_info->next_to_watch = i;
2999 if (i == tx_ring->count)
3007 i = tx_ring->count - 1;
3010 tx_ring->tx_buffer_info[i].skb = skb;
3011 tx_ring->tx_buffer_info[first].next_to_watch = i;
3016 dev_err(&pdev->dev, "TX DMA map failed\n");
3018 /* clear timestamp and dma mappings for failed tx_buffer_info map */
3019 tx_buffer_info->dma = 0;
3020 tx_buffer_info->time_stamp = 0;
3021 tx_buffer_info->next_to_watch = 0;
3024 /* clear timestamp and dma mappings for remaining portion of packet */
3025 while (count >= 0) {
3029 i += tx_ring->count;
3030 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3031 ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3037 static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter,
3038 struct ixgbevf_ring *tx_ring, int tx_flags,
3039 int count, u32 paylen, u8 hdr_len)
3041 union ixgbe_adv_tx_desc *tx_desc = NULL;
3042 struct ixgbevf_tx_buffer *tx_buffer_info;
3043 u32 olinfo_status = 0, cmd_type_len = 0;
3046 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
3048 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
3050 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
3052 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
3053 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
3055 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
3056 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
3058 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
3059 IXGBE_ADVTXD_POPTS_SHIFT;
3061 /* use index 1 context for tso */
3062 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
3063 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
3064 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
3065 IXGBE_ADVTXD_POPTS_SHIFT;
3067 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
3068 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
3069 IXGBE_ADVTXD_POPTS_SHIFT;
3071 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
3073 i = tx_ring->next_to_use;
3075 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3076 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
3077 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
3078 tx_desc->read.cmd_type_len =
3079 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
3080 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
3082 if (i == tx_ring->count)
3086 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
3089 * Force memory writes to complete before letting h/w
3090 * know there are new descriptors to fetch. (Only
3091 * applicable for weak-ordered memory model archs,
3096 tx_ring->next_to_use = i;
3097 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3100 static int __ixgbevf_maybe_stop_tx(struct net_device *netdev,
3101 struct ixgbevf_ring *tx_ring, int size)
3103 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3105 netif_stop_subqueue(netdev, tx_ring->queue_index);
3106 /* Herbert's original patch had:
3107 * smp_mb__after_netif_stop_queue();
3108 * but since that doesn't exist yet, just open code it. */
3111 /* We need to check again in a case another CPU has just
3112 * made room available. */
3113 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
3116 /* A reprieve! - use start_queue because it doesn't call schedule */
3117 netif_start_subqueue(netdev, tx_ring->queue_index);
3118 ++adapter->restart_queue;
3122 static int ixgbevf_maybe_stop_tx(struct net_device *netdev,
3123 struct ixgbevf_ring *tx_ring, int size)
3125 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
3127 return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size);
3130 static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3132 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3133 struct ixgbevf_ring *tx_ring;
3135 unsigned int tx_flags = 0;
3142 tx_ring = &adapter->tx_ring[r_idx];
3144 if (vlan_tx_tag_present(skb)) {
3145 tx_flags |= vlan_tx_tag_get(skb);
3146 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
3147 tx_flags |= IXGBE_TX_FLAGS_VLAN;
3150 /* four things can cause us to need a context descriptor */
3151 if (skb_is_gso(skb) ||
3152 (skb->ip_summed == CHECKSUM_PARTIAL) ||
3153 (tx_flags & IXGBE_TX_FLAGS_VLAN))
3156 count += TXD_USE_COUNT(skb_headlen(skb));
3157 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
3158 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
3160 if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) {
3162 return NETDEV_TX_BUSY;
3165 first = tx_ring->next_to_use;
3167 if (skb->protocol == htons(ETH_P_IP))
3168 tx_flags |= IXGBE_TX_FLAGS_IPV4;
3169 tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
3171 dev_kfree_skb_any(skb);
3172 return NETDEV_TX_OK;
3176 tx_flags |= IXGBE_TX_FLAGS_TSO;
3177 else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
3178 (skb->ip_summed == CHECKSUM_PARTIAL))
3179 tx_flags |= IXGBE_TX_FLAGS_CSUM;
3181 ixgbevf_tx_queue(adapter, tx_ring, tx_flags,
3182 ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first),
3185 ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
3187 return NETDEV_TX_OK;
3191 * ixgbevf_set_mac - Change the Ethernet Address of the NIC
3192 * @netdev: network interface device structure
3193 * @p: pointer to an address structure
3195 * Returns 0 on success, negative on failure
3197 static int ixgbevf_set_mac(struct net_device *netdev, void *p)
3199 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3200 struct ixgbe_hw *hw = &adapter->hw;
3201 struct sockaddr *addr = p;
3203 if (!is_valid_ether_addr(addr->sa_data))
3204 return -EADDRNOTAVAIL;
3206 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
3207 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
3209 if (hw->mac.ops.set_rar)
3210 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
3216 * ixgbevf_change_mtu - Change the Maximum Transfer Unit
3217 * @netdev: network interface device structure
3218 * @new_mtu: new value for maximum frame size
3220 * Returns 0 on success, negative on failure
3222 static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
3224 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3225 struct ixgbe_hw *hw = &adapter->hw;
3226 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3227 int max_possible_frame = MAXIMUM_ETHERNET_VLAN_SIZE;
3230 if (adapter->hw.mac.type == ixgbe_mac_X540_vf)
3231 max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE;
3233 /* MTU < 68 is an error and causes problems on some kernels */
3234 if ((new_mtu < 68) || (max_frame > max_possible_frame))
3237 hw_dbg(&adapter->hw, "changing MTU from %d to %d\n",
3238 netdev->mtu, new_mtu);
3239 /* must set new MTU before calling down or up */
3240 netdev->mtu = new_mtu;
3242 msg[0] = IXGBE_VF_SET_LPE;
3244 hw->mbx.ops.write_posted(hw, msg, 2);
3246 if (netif_running(netdev))
3247 ixgbevf_reinit_locked(adapter);
3252 static void ixgbevf_shutdown(struct pci_dev *pdev)
3254 struct net_device *netdev = pci_get_drvdata(pdev);
3255 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3257 netif_device_detach(netdev);
3259 if (netif_running(netdev)) {
3260 ixgbevf_down(adapter);
3261 ixgbevf_free_irq(adapter);
3262 ixgbevf_free_all_tx_resources(adapter);
3263 ixgbevf_free_all_rx_resources(adapter);
3267 pci_save_state(pdev);
3270 pci_disable_device(pdev);
3273 static const struct net_device_ops ixgbe_netdev_ops = {
3274 .ndo_open = &ixgbevf_open,
3275 .ndo_stop = &ixgbevf_close,
3276 .ndo_start_xmit = &ixgbevf_xmit_frame,
3277 .ndo_set_rx_mode = &ixgbevf_set_rx_mode,
3278 .ndo_set_multicast_list = &ixgbevf_set_rx_mode,
3279 .ndo_validate_addr = eth_validate_addr,
3280 .ndo_set_mac_address = &ixgbevf_set_mac,
3281 .ndo_change_mtu = &ixgbevf_change_mtu,
3282 .ndo_tx_timeout = &ixgbevf_tx_timeout,
3283 .ndo_vlan_rx_register = &ixgbevf_vlan_rx_register,
3284 .ndo_vlan_rx_add_vid = &ixgbevf_vlan_rx_add_vid,
3285 .ndo_vlan_rx_kill_vid = &ixgbevf_vlan_rx_kill_vid,
3288 static void ixgbevf_assign_netdev_ops(struct net_device *dev)
3290 struct ixgbevf_adapter *adapter;
3291 adapter = netdev_priv(dev);
3292 dev->netdev_ops = &ixgbe_netdev_ops;
3293 ixgbevf_set_ethtool_ops(dev);
3294 dev->watchdog_timeo = 5 * HZ;
3298 * ixgbevf_probe - Device Initialization Routine
3299 * @pdev: PCI device information struct
3300 * @ent: entry in ixgbevf_pci_tbl
3302 * Returns 0 on success, negative on failure
3304 * ixgbevf_probe initializes an adapter identified by a pci_dev structure.
3305 * The OS initialization, configuring of the adapter private structure,
3306 * and a hardware reset occur.
3308 static int __devinit ixgbevf_probe(struct pci_dev *pdev,
3309 const struct pci_device_id *ent)
3311 struct net_device *netdev;
3312 struct ixgbevf_adapter *adapter = NULL;
3313 struct ixgbe_hw *hw = NULL;
3314 const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data];
3315 static int cards_found;
3316 int err, pci_using_dac;
3318 err = pci_enable_device(pdev);
3322 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
3323 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
3326 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
3328 err = dma_set_coherent_mask(&pdev->dev,
3331 dev_err(&pdev->dev, "No usable DMA "
3332 "configuration, aborting\n");
3339 err = pci_request_regions(pdev, ixgbevf_driver_name);
3341 dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err);
3345 pci_set_master(pdev);
3348 netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter),
3351 netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter));
3355 goto err_alloc_etherdev;
3358 SET_NETDEV_DEV(netdev, &pdev->dev);
3360 pci_set_drvdata(pdev, netdev);
3361 adapter = netdev_priv(netdev);
3363 adapter->netdev = netdev;
3364 adapter->pdev = pdev;
3367 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
3370 * call save state here in standalone driver because it relies on
3371 * adapter struct to exist, and needs to call netdev_priv
3373 pci_save_state(pdev);
3375 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
3376 pci_resource_len(pdev, 0));
3382 ixgbevf_assign_netdev_ops(netdev);
3384 adapter->bd_number = cards_found;
3387 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
3388 hw->mac.type = ii->mac;
3390 memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops,
3391 sizeof(struct ixgbe_mac_operations));
3393 adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE;
3394 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
3395 adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE;
3397 /* setup the private structure */
3398 err = ixgbevf_sw_init(adapter);
3400 netdev->features = NETIF_F_SG |
3402 NETIF_F_HW_VLAN_TX |
3403 NETIF_F_HW_VLAN_RX |
3404 NETIF_F_HW_VLAN_FILTER;
3406 netdev->features |= NETIF_F_IPV6_CSUM;
3407 netdev->features |= NETIF_F_TSO;
3408 netdev->features |= NETIF_F_TSO6;
3409 netdev->features |= NETIF_F_GRO;
3410 netdev->vlan_features |= NETIF_F_TSO;
3411 netdev->vlan_features |= NETIF_F_TSO6;
3412 netdev->vlan_features |= NETIF_F_IP_CSUM;
3413 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
3414 netdev->vlan_features |= NETIF_F_SG;
3417 netdev->features |= NETIF_F_HIGHDMA;
3419 /* The HW MAC address was set and/or determined in sw_init */
3420 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
3421 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
3423 if (!is_valid_ether_addr(netdev->dev_addr)) {
3424 printk(KERN_ERR "invalid MAC address\n");
3429 init_timer(&adapter->watchdog_timer);
3430 adapter->watchdog_timer.function = ixgbevf_watchdog;
3431 adapter->watchdog_timer.data = (unsigned long)adapter;
3433 INIT_WORK(&adapter->reset_task, ixgbevf_reset_task);
3434 INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task);
3436 err = ixgbevf_init_interrupt_scheme(adapter);
3440 /* pick up the PCI bus settings for reporting later */
3441 if (hw->mac.ops.get_bus_info)
3442 hw->mac.ops.get_bus_info(hw);
3444 strcpy(netdev->name, "eth%d");
3446 err = register_netdev(netdev);
3450 adapter->netdev_registered = true;
3452 netif_carrier_off(netdev);
3454 ixgbevf_init_last_counter_stats(adapter);
3456 /* print the MAC address */
3457 hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
3458 netdev->dev_addr[0],
3459 netdev->dev_addr[1],
3460 netdev->dev_addr[2],
3461 netdev->dev_addr[3],
3462 netdev->dev_addr[4],
3463 netdev->dev_addr[5]);
3465 hw_dbg(hw, "MAC: %d\n", hw->mac.type);
3467 hw_dbg(hw, "LRO is disabled\n");
3469 hw_dbg(hw, "Intel(R) 82599 Virtual Function\n");
3475 ixgbevf_reset_interrupt_capability(adapter);
3476 iounmap(hw->hw_addr);
3478 free_netdev(netdev);
3480 pci_release_regions(pdev);
3483 pci_disable_device(pdev);
3488 * ixgbevf_remove - Device Removal Routine
3489 * @pdev: PCI device information struct
3491 * ixgbevf_remove is called by the PCI subsystem to alert the driver
3492 * that it should release a PCI device. The could be caused by a
3493 * Hot-Plug event, or because the driver is going to be removed from
3496 static void __devexit ixgbevf_remove(struct pci_dev *pdev)
3498 struct net_device *netdev = pci_get_drvdata(pdev);
3499 struct ixgbevf_adapter *adapter = netdev_priv(netdev);
3501 set_bit(__IXGBEVF_DOWN, &adapter->state);
3503 del_timer_sync(&adapter->watchdog_timer);
3505 cancel_work_sync(&adapter->reset_task);
3506 cancel_work_sync(&adapter->watchdog_task);
3508 if (adapter->netdev_registered) {
3509 unregister_netdev(netdev);
3510 adapter->netdev_registered = false;
3513 ixgbevf_reset_interrupt_capability(adapter);
3515 iounmap(adapter->hw.hw_addr);
3516 pci_release_regions(pdev);
3518 hw_dbg(&adapter->hw, "Remove complete\n");
3520 kfree(adapter->tx_ring);
3521 kfree(adapter->rx_ring);
3523 free_netdev(netdev);
3525 pci_disable_device(pdev);
3528 static struct pci_driver ixgbevf_driver = {
3529 .name = ixgbevf_driver_name,
3530 .id_table = ixgbevf_pci_tbl,
3531 .probe = ixgbevf_probe,
3532 .remove = __devexit_p(ixgbevf_remove),
3533 .shutdown = ixgbevf_shutdown,
3537 * ixgbevf_init_module - Driver Registration Routine
3539 * ixgbevf_init_module is the first routine called when the driver is
3540 * loaded. All it does is register with the PCI subsystem.
3542 static int __init ixgbevf_init_module(void)
3545 printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string,
3546 ixgbevf_driver_version);
3548 printk(KERN_INFO "%s\n", ixgbevf_copyright);
3550 ret = pci_register_driver(&ixgbevf_driver);
3554 module_init(ixgbevf_init_module);
3557 * ixgbevf_exit_module - Driver Exit Cleanup Routine
3559 * ixgbevf_exit_module is called just before the driver is removed
3562 static void __exit ixgbevf_exit_module(void)
3564 pci_unregister_driver(&ixgbevf_driver);
3569 * ixgbevf_get_hw_dev_name - return device name string
3570 * used by hardware layer to print debugging information
3572 char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw)
3574 struct ixgbevf_adapter *adapter = hw->back;
3575 return adapter->netdev->name;
3579 module_exit(ixgbevf_exit_module);
3581 /* ixgbevf_main.c */