1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux 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 #ifdef CONFIG_IXGBE_DCB
30 #include "ixgbe_dcb_82599.h"
31 #endif /* CONFIG_IXGBE_DCB */
32 #include <linux/if_ether.h>
33 #include <linux/gfp.h>
34 #include <linux/if_vlan.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <scsi/scsi_device.h>
37 #include <scsi/fc/fc_fs.h>
38 #include <scsi/fc/fc_fcoe.h>
39 #include <scsi/libfc.h>
40 #include <scsi/libfcoe.h>
43 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
44 * @rx_desc: advanced rx descriptor
46 * Returns : true if it is FCoE pkt
48 static inline bool ixgbe_rx_is_fcoe(union ixgbe_adv_rx_desc *rx_desc)
52 p = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info);
53 if (p & IXGBE_RXDADV_PKTTYPE_ETQF) {
54 p &= IXGBE_RXDADV_PKTTYPE_ETQF_MASK;
55 p >>= IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT;
56 return p == IXGBE_ETQF_FILTER_FCOE;
62 * ixgbe_fcoe_clear_ddp - clear the given ddp context
63 * @ddp - ptr to the ixgbe_fcoe_ddp
68 static inline void ixgbe_fcoe_clear_ddp(struct ixgbe_fcoe_ddp *ddp)
79 * ixgbe_fcoe_ddp_put - free the ddp context for a given xid
80 * @netdev: the corresponding net_device
81 * @xid: the xid that corresponding ddp will be freed
83 * This is the implementation of net_device_ops.ndo_fcoe_ddp_done
84 * and it is expected to be called by ULD, i.e., FCP layer of libfc
85 * to release the corresponding ddp context when the I/O is done.
87 * Returns : data length already ddp-ed in bytes
89 int ixgbe_fcoe_ddp_put(struct net_device *netdev, u16 xid)
92 struct ixgbe_fcoe *fcoe;
93 struct ixgbe_adapter *adapter;
94 struct ixgbe_fcoe_ddp *ddp;
99 if (xid >= IXGBE_FCOE_DDP_MAX)
102 adapter = netdev_priv(netdev);
103 fcoe = &adapter->fcoe;
104 ddp = &fcoe->ddp[xid];
109 /* if there an error, force to invalidate ddp context */
111 spin_lock_bh(&fcoe->lock);
112 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCFLT, 0);
113 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCFLTRW,
114 (xid | IXGBE_FCFLTRW_WE));
115 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCBUFF, 0);
116 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCDMARW,
117 (xid | IXGBE_FCDMARW_WE));
118 spin_unlock_bh(&fcoe->lock);
121 pci_unmap_sg(adapter->pdev, ddp->sgl, ddp->sgc,
123 pci_pool_free(fcoe->pool, ddp->udl, ddp->udp);
124 ixgbe_fcoe_clear_ddp(ddp);
131 * ixgbe_fcoe_ddp_get - called to set up ddp context
132 * @netdev: the corresponding net_device
133 * @xid: the exchange id requesting ddp
134 * @sgl: the scatter-gather list for this request
135 * @sgc: the number of scatter-gather items
137 * This is the implementation of net_device_ops.ndo_fcoe_ddp_setup
138 * and is expected to be called from ULD, e.g., FCP layer of libfc
139 * to set up ddp for the corresponding xid of the given sglist for
140 * the corresponding I/O.
142 * Returns : 1 for success and 0 for no ddp
144 int ixgbe_fcoe_ddp_get(struct net_device *netdev, u16 xid,
145 struct scatterlist *sgl, unsigned int sgc)
147 struct ixgbe_adapter *adapter;
149 struct ixgbe_fcoe *fcoe;
150 struct ixgbe_fcoe_ddp *ddp;
151 struct scatterlist *sg;
152 unsigned int i, j, dmacount;
154 static const unsigned int bufflen = 4096;
155 unsigned int firstoff = 0;
156 unsigned int lastsize;
157 unsigned int thisoff = 0;
158 unsigned int thislen = 0;
159 u32 fcbuff, fcdmarw, fcfltrw;
165 adapter = netdev_priv(netdev);
166 if (xid >= IXGBE_FCOE_DDP_MAX) {
167 e_warn(drv, "xid=0x%x out-of-range\n", xid);
171 /* no DDP if we are already down or resetting */
172 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
173 test_bit(__IXGBE_RESETTING, &adapter->state))
176 fcoe = &adapter->fcoe;
178 e_warn(drv, "xid=0x%x no ddp pool for fcoe\n", xid);
182 ddp = &fcoe->ddp[xid];
184 e_err(drv, "xid 0x%x w/ non-null sgl=%p nents=%d\n",
185 xid, ddp->sgl, ddp->sgc);
188 ixgbe_fcoe_clear_ddp(ddp);
190 /* setup dma from scsi command sgl */
191 dmacount = pci_map_sg(adapter->pdev, sgl, sgc, DMA_FROM_DEVICE);
193 e_err(drv, "xid 0x%x DMA map error\n", xid);
197 /* alloc the udl from our ddp pool */
198 ddp->udl = pci_pool_alloc(fcoe->pool, GFP_ATOMIC, &ddp->udp);
200 e_err(drv, "failed allocated ddp context\n");
201 goto out_noddp_unmap;
207 for_each_sg(sgl, sg, dmacount, i) {
208 addr = sg_dma_address(sg);
209 len = sg_dma_len(sg);
211 /* max number of buffers allowed in one DDP context */
212 if (j >= IXGBE_BUFFCNT_MAX) {
213 e_err(drv, "xid=%x:%d,%d,%d:addr=%llx "
214 "not enough descriptors\n",
215 xid, i, j, dmacount, (u64)addr);
219 /* get the offset of length of current buffer */
220 thisoff = addr & ((dma_addr_t)bufflen - 1);
221 thislen = min((bufflen - thisoff), len);
223 * all but the 1st buffer (j == 0)
224 * must be aligned on bufflen
226 if ((j != 0) && (thisoff))
229 * all but the last buffer
230 * ((i == (dmacount - 1)) && (thislen == len))
231 * must end at bufflen
233 if (((i != (dmacount - 1)) || (thislen != len))
234 && ((thislen + thisoff) != bufflen))
237 ddp->udl[j] = (u64)(addr - thisoff);
238 /* only the first buffer may have none-zero offset */
246 /* only the last buffer may have non-full bufflen */
247 lastsize = thisoff + thislen;
249 fcbuff = (IXGBE_FCBUFF_4KB << IXGBE_FCBUFF_BUFFSIZE_SHIFT);
250 fcbuff |= ((j & 0xff) << IXGBE_FCBUFF_BUFFCNT_SHIFT);
251 fcbuff |= (firstoff << IXGBE_FCBUFF_OFFSET_SHIFT);
252 fcbuff |= (IXGBE_FCBUFF_VALID);
255 fcdmarw |= IXGBE_FCDMARW_WE;
256 fcdmarw |= (lastsize << IXGBE_FCDMARW_LASTSIZE_SHIFT);
259 fcfltrw |= IXGBE_FCFLTRW_WE;
261 /* program DMA context */
263 spin_lock_bh(&fcoe->lock);
264 IXGBE_WRITE_REG(hw, IXGBE_FCPTRL, ddp->udp & DMA_BIT_MASK(32));
265 IXGBE_WRITE_REG(hw, IXGBE_FCPTRH, (u64)ddp->udp >> 32);
266 IXGBE_WRITE_REG(hw, IXGBE_FCBUFF, fcbuff);
267 IXGBE_WRITE_REG(hw, IXGBE_FCDMARW, fcdmarw);
268 /* program filter context */
269 IXGBE_WRITE_REG(hw, IXGBE_FCPARAM, 0);
270 IXGBE_WRITE_REG(hw, IXGBE_FCFLT, IXGBE_FCFLT_VALID);
271 IXGBE_WRITE_REG(hw, IXGBE_FCFLTRW, fcfltrw);
272 spin_unlock_bh(&fcoe->lock);
277 pci_pool_free(fcoe->pool, ddp->udl, ddp->udp);
278 ixgbe_fcoe_clear_ddp(ddp);
281 pci_unmap_sg(adapter->pdev, sgl, sgc, DMA_FROM_DEVICE);
286 * ixgbe_fcoe_ddp - check ddp status and mark it done
287 * @adapter: ixgbe adapter
288 * @rx_desc: advanced rx descriptor
289 * @skb: the skb holding the received data
291 * This checks ddp status.
293 * Returns : < 0 indicates an error or not a FCiE ddp, 0 indicates
294 * not passing the skb to ULD, > 0 indicates is the length of data
297 int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter,
298 union ixgbe_adv_rx_desc *rx_desc,
303 u32 sterr, fceofe, fcerr, fcstat;
305 struct ixgbe_fcoe *fcoe;
306 struct ixgbe_fcoe_ddp *ddp;
307 struct fc_frame_header *fh;
309 if (!ixgbe_rx_is_fcoe(rx_desc))
312 sterr = le32_to_cpu(rx_desc->wb.upper.status_error);
313 fcerr = (sterr & IXGBE_RXDADV_ERR_FCERR);
314 fceofe = (sterr & IXGBE_RXDADV_ERR_FCEOFE);
315 if (fcerr == IXGBE_FCERR_BADCRC)
316 skb_checksum_none_assert(skb);
318 skb->ip_summed = CHECKSUM_UNNECESSARY;
320 if (eth_hdr(skb)->h_proto == htons(ETH_P_8021Q))
321 fh = (struct fc_frame_header *)(skb->data +
322 sizeof(struct vlan_hdr) + sizeof(struct fcoe_hdr));
324 fh = (struct fc_frame_header *)(skb->data +
325 sizeof(struct fcoe_hdr));
326 fctl = ntoh24(fh->fh_f_ctl);
327 if (fctl & FC_FC_EX_CTX)
328 xid = be16_to_cpu(fh->fh_ox_id);
330 xid = be16_to_cpu(fh->fh_rx_id);
332 if (xid >= IXGBE_FCOE_DDP_MAX)
335 fcoe = &adapter->fcoe;
336 ddp = &fcoe->ddp[xid];
340 ddp->err = (fcerr | fceofe);
344 fcstat = (sterr & IXGBE_RXDADV_STAT_FCSTAT);
346 /* update length of DDPed data */
347 ddp->len = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
348 /* unmap the sg list when FCP_RSP is received */
349 if (fcstat == IXGBE_RXDADV_STAT_FCSTAT_FCPRSP) {
350 pci_unmap_sg(adapter->pdev, ddp->sgl,
351 ddp->sgc, DMA_FROM_DEVICE);
355 /* return 0 to bypass going to ULD for DDPed data */
356 if (fcstat == IXGBE_RXDADV_STAT_FCSTAT_DDP)
367 * ixgbe_fso - ixgbe FCoE Sequence Offload (FSO)
368 * @adapter: ixgbe adapter
369 * @tx_ring: tx desc ring
370 * @skb: associated skb
371 * @tx_flags: tx flags
372 * @hdr_len: hdr_len to be returned
374 * This sets up large send offload for FCoE
376 * Returns : 0 indicates no FSO, > 0 for FSO, < 0 for error
378 int ixgbe_fso(struct ixgbe_adapter *adapter,
379 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
380 u32 tx_flags, u8 *hdr_len)
389 struct ixgbe_tx_buffer *tx_buffer_info;
390 struct ixgbe_adv_tx_context_desc *context_desc;
391 struct fc_frame_header *fh;
393 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_type != SKB_GSO_FCOE)) {
394 e_err(drv, "Wrong gso type %d:expecting SKB_GSO_FCOE\n",
395 skb_shinfo(skb)->gso_type);
399 /* resets the header to point fcoe/fc */
400 skb_set_network_header(skb, skb->mac_len);
401 skb_set_transport_header(skb, skb->mac_len +
402 sizeof(struct fcoe_hdr));
404 /* sets up SOF and ORIS */
406 sof = ((struct fcoe_hdr *)skb_network_header(skb))->fcoe_sof;
409 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_ORIS;
412 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_SOF;
413 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_ORIS;
418 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_SOF;
421 e_warn(drv, "unknown sof = 0x%x\n", sof);
425 /* the first byte of the last dword is EOF */
426 skb_copy_bits(skb, skb->len - 4, &eof, 1);
427 /* sets up EOF and ORIE */
430 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_EOF_N;
434 if (skb_is_gso(skb)) {
435 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_EOF_N;
436 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_ORIE;
438 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_EOF_T;
442 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_EOF_NI;
445 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_EOF_A;
448 e_warn(drv, "unknown eof = 0x%x\n", eof);
452 /* sets up PARINC indicating data offset */
453 fh = (struct fc_frame_header *)skb_transport_header(skb);
454 if (fh->fh_f_ctl[2] & FC_FC_REL_OFF)
455 fcoe_sof_eof |= IXGBE_ADVTXD_FCOEF_PARINC;
457 /* hdr_len includes fc_hdr if FCoE lso is enabled */
458 *hdr_len = sizeof(struct fcoe_crc_eof);
460 *hdr_len += (skb_transport_offset(skb) +
461 sizeof(struct fc_frame_header));
462 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
463 vlan_macip_lens = (skb_transport_offset(skb) +
464 sizeof(struct fc_frame_header));
465 vlan_macip_lens |= ((skb_transport_offset(skb) - 4)
466 << IXGBE_ADVTXD_MACLEN_SHIFT);
467 vlan_macip_lens |= (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
469 /* type_tycmd and mss: set TUCMD.FCoE to enable offload */
470 type_tucmd = IXGBE_TXD_CMD_DEXT | IXGBE_ADVTXD_DTYP_CTXT |
471 IXGBE_ADVTXT_TUCMD_FCOE;
473 mss = skb_shinfo(skb)->gso_size;
474 /* mss_l4len_id: use 1 for FSO as TSO, no need for L4LEN */
475 mss_l4len_idx = (mss << IXGBE_ADVTXD_MSS_SHIFT) |
476 (1 << IXGBE_ADVTXD_IDX_SHIFT);
478 /* write context desc */
479 i = tx_ring->next_to_use;
480 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
481 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
482 context_desc->seqnum_seed = cpu_to_le32(fcoe_sof_eof);
483 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd);
484 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
486 tx_buffer_info = &tx_ring->tx_buffer_info[i];
487 tx_buffer_info->time_stamp = jiffies;
488 tx_buffer_info->next_to_watch = i;
491 if (i == tx_ring->count)
493 tx_ring->next_to_use = i;
495 return skb_is_gso(skb);
499 * ixgbe_configure_fcoe - configures registers for fcoe at start
500 * @adapter: ptr to ixgbe adapter
502 * This sets up FCoE related registers
506 void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter)
508 int i, fcoe_q, fcoe_i;
509 struct ixgbe_hw *hw = &adapter->hw;
510 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
511 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
512 #ifdef CONFIG_IXGBE_DCB
517 /* create the pool for ddp if not created yet */
519 /* allocate ddp pool */
520 fcoe->pool = pci_pool_create("ixgbe_fcoe_ddp",
521 adapter->pdev, IXGBE_FCPTR_MAX,
522 IXGBE_FCPTR_ALIGN, PAGE_SIZE);
524 e_err(drv, "failed to allocated FCoE DDP pool\n");
526 spin_lock_init(&fcoe->lock);
529 /* Enable L2 eth type filter for FCoE */
530 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FCOE),
531 (ETH_P_FCOE | IXGBE_ETQF_FCOE | IXGBE_ETQF_FILTER_EN));
532 /* Enable L2 eth type filter for FIP */
533 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FIP),
534 (ETH_P_FIP | IXGBE_ETQF_FILTER_EN));
535 if (adapter->ring_feature[RING_F_FCOE].indices) {
536 /* Use multiple rx queues for FCoE by redirection table */
537 for (i = 0; i < IXGBE_FCRETA_SIZE; i++) {
538 fcoe_i = f->mask + i % f->indices;
539 fcoe_i &= IXGBE_FCRETA_ENTRY_MASK;
540 fcoe_q = adapter->rx_ring[fcoe_i]->reg_idx;
541 IXGBE_WRITE_REG(hw, IXGBE_FCRETA(i), fcoe_q);
543 IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, IXGBE_FCRECTL_ENA);
544 IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE), 0);
546 /* Use single rx queue for FCoE */
548 fcoe_q = adapter->rx_ring[fcoe_i]->reg_idx;
549 IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, 0);
550 IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE),
551 IXGBE_ETQS_QUEUE_EN |
552 (fcoe_q << IXGBE_ETQS_RX_QUEUE_SHIFT));
554 /* send FIP frames to the first FCoE queue */
556 fcoe_q = adapter->rx_ring[fcoe_i]->reg_idx;
557 IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FIP),
558 IXGBE_ETQS_QUEUE_EN |
559 (fcoe_q << IXGBE_ETQS_RX_QUEUE_SHIFT));
561 IXGBE_WRITE_REG(hw, IXGBE_FCRXCTRL,
562 IXGBE_FCRXCTRL_FCOELLI |
563 IXGBE_FCRXCTRL_FCCRCBO |
564 (FC_FCOE_VER << IXGBE_FCRXCTRL_FCOEVER_SHIFT));
565 #ifdef CONFIG_IXGBE_DCB
566 up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC);
567 for (i = 0; i < MAX_USER_PRIORITY; i++) {
568 tc = (u8)(up2tc >> (i * IXGBE_RTTUP2TC_UP_SHIFT));
569 tc &= (MAX_TRAFFIC_CLASS - 1);
570 if (fcoe->tc == tc) {
579 * ixgbe_cleanup_fcoe - release all fcoe ddp context resources
580 * @adapter : ixgbe adapter
582 * Cleans up outstanding ddp context resources
586 void ixgbe_cleanup_fcoe(struct ixgbe_adapter *adapter)
589 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
591 /* release ddp resource */
593 for (i = 0; i < IXGBE_FCOE_DDP_MAX; i++)
594 ixgbe_fcoe_ddp_put(adapter->netdev, i);
595 pci_pool_destroy(fcoe->pool);
601 * ixgbe_fcoe_enable - turn on FCoE offload feature
602 * @netdev: the corresponding netdev
604 * Turns on FCoE offload feature in 82599.
606 * Returns : 0 indicates success or -EINVAL on failure
608 int ixgbe_fcoe_enable(struct net_device *netdev)
611 struct ixgbe_adapter *adapter = netdev_priv(netdev);
612 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
615 if (!(adapter->flags & IXGBE_FLAG_FCOE_CAPABLE))
618 atomic_inc(&fcoe->refcnt);
619 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
622 e_info(drv, "Enabling FCoE offload features.\n");
623 if (netif_running(netdev))
624 netdev->netdev_ops->ndo_stop(netdev);
626 ixgbe_clear_interrupt_scheme(adapter);
628 adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
629 adapter->ring_feature[RING_F_FCOE].indices = IXGBE_FCRETA_SIZE;
630 netdev->features |= NETIF_F_FCOE_CRC;
631 netdev->features |= NETIF_F_FSO;
632 netdev->features |= NETIF_F_FCOE_MTU;
633 netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
635 ixgbe_init_interrupt_scheme(adapter);
636 netdev_features_change(netdev);
638 if (netif_running(netdev))
639 netdev->netdev_ops->ndo_open(netdev);
647 * ixgbe_fcoe_disable - turn off FCoE offload feature
648 * @netdev: the corresponding netdev
650 * Turns off FCoE offload feature in 82599.
652 * Returns : 0 indicates success or -EINVAL on failure
654 int ixgbe_fcoe_disable(struct net_device *netdev)
657 struct ixgbe_adapter *adapter = netdev_priv(netdev);
658 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
660 if (!(adapter->flags & IXGBE_FLAG_FCOE_CAPABLE))
663 if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
666 if (!atomic_dec_and_test(&fcoe->refcnt))
669 e_info(drv, "Disabling FCoE offload features.\n");
670 netdev->features &= ~NETIF_F_FCOE_CRC;
671 netdev->features &= ~NETIF_F_FSO;
672 netdev->features &= ~NETIF_F_FCOE_MTU;
673 netdev->fcoe_ddp_xid = 0;
674 netdev_features_change(netdev);
676 if (netif_running(netdev))
677 netdev->netdev_ops->ndo_stop(netdev);
679 ixgbe_clear_interrupt_scheme(adapter);
680 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
681 adapter->ring_feature[RING_F_FCOE].indices = 0;
682 ixgbe_cleanup_fcoe(adapter);
683 ixgbe_init_interrupt_scheme(adapter);
685 if (netif_running(netdev))
686 netdev->netdev_ops->ndo_open(netdev);
693 #ifdef CONFIG_IXGBE_DCB
695 * ixgbe_fcoe_getapp - retrieves current user priority bitmap for FCoE
696 * @adapter : ixgbe adapter
698 * Finds out the corresponding user priority bitmap from the current
699 * traffic class that FCoE belongs to. Returns 0 as the invalid user
700 * priority bitmap to indicate an error.
702 * Returns : 802.1p user priority bitmap for FCoE
704 u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter)
706 return 1 << adapter->fcoe.up;
710 * ixgbe_fcoe_setapp - sets the user priority bitmap for FCoE
711 * @adapter : ixgbe adapter
712 * @up : 802.1p user priority bitmap
714 * Finds out the traffic class from the input user priority
717 * Returns : 0 on success otherwise returns 1 on error
719 u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up)
724 /* valid user priority bitmap must not be 0 */
726 /* from user priority to the corresponding traffic class */
727 up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC);
728 for (i = 0; i < MAX_USER_PRIORITY; i++) {
730 up2tc >>= (i * IXGBE_RTTUP2TC_UP_SHIFT);
731 up2tc &= (MAX_TRAFFIC_CLASS - 1);
732 adapter->fcoe.tc = (u8)up2tc;
733 adapter->fcoe.up = i;
741 #endif /* CONFIG_IXGBE_DCB */
744 * ixgbe_fcoe_get_wwn - get world wide name for the node or the port
745 * @netdev : ixgbe adapter
746 * @wwn : the world wide name
747 * @type: the type of world wide name
749 * Returns the node or port world wide name if both the prefix and the san
750 * mac address are valid, then the wwn is formed based on the NAA-2 for
751 * IEEE Extended name identifier (ref. to T10 FC-LS Spec., Sec. 15.3).
753 * Returns : 0 on success
755 int ixgbe_fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type)
759 struct ixgbe_adapter *adapter = netdev_priv(netdev);
760 struct ixgbe_mac_info *mac = &adapter->hw.mac;
763 case NETDEV_FCOE_WWNN:
764 prefix = mac->wwnn_prefix;
766 case NETDEV_FCOE_WWPN:
767 prefix = mac->wwpn_prefix;
773 if ((prefix != 0xffff) &&
774 is_valid_ether_addr(mac->san_addr)) {
775 *wwn = ((u64) prefix << 48) |
776 ((u64) mac->san_addr[0] << 40) |
777 ((u64) mac->san_addr[1] << 32) |
778 ((u64) mac->san_addr[2] << 24) |
779 ((u64) mac->san_addr[3] << 16) |
780 ((u64) mac->san_addr[4] << 8) |
781 ((u64) mac->san_addr[5]);