15df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar/* 25df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * Copyright 2008 Cisco Systems, Inc. All rights reserved. 35df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * Copyright 2007 Nuova Systems, Inc. All rights reserved. 45df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * 55df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * This program is free software; you may redistribute it and/or modify 65df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * it under the terms of the GNU General Public License as published by 75df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * the Free Software Foundation; version 2 of the License. 85df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * 95df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 145df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 155df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 165df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * SOFTWARE. 175df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar */ 185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/errno.h> 195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/pci.h> 205a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 215df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/skbuff.h> 225df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/interrupt.h> 235df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/spinlock.h> 245df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/if_ether.h> 255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/if_vlan.h> 265df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <linux/workqueue.h> 2778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt#include <scsi/fc/fc_fip.h> 285df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <scsi/fc/fc_els.h> 295df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <scsi/fc/fc_fcoe.h> 305df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <scsi/fc_frame.h> 315df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include <scsi/libfc.h> 325df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include "fnic_io.h" 335df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include "fnic.h" 345df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include "cq_enet_desc.h" 355df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar#include "cq_exch_desc.h" 365df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 375df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarstruct workqueue_struct *fnic_event_queue; 385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtstatic void fnic_set_eth_mode(struct fnic *); 4078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarvoid fnic_handle_link(struct work_struct *work) 425df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 435df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = container_of(work, struct fnic, link_work); 445df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 455df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar int old_link_status; 465df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u32 old_link_down_cnt; 475df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 485df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->fnic_lock, flags); 495df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 505df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->stop_rx_link_events) { 515df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 525df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return; 535df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 545df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 555df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar old_link_down_cnt = fnic->link_down_cnt; 565df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar old_link_status = fnic->link_status; 575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->link_status = vnic_dev_link_status(fnic->vdev); 585df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev); 595df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (old_link_status == fnic->link_status) { 615df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (!fnic->link_status) 625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* DOWN -> DOWN */ 635df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 645df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar else { 655df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (old_link_down_cnt != fnic->link_down_cnt) { 665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* UP -> DOWN -> UP */ 675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->lport->host_stats.link_failure_count++; 685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 705df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "link down\n"); 7178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_link_down(&fnic->ctlr); 725df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 735df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "link up\n"); 7478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_link_up(&fnic->ctlr); 755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else 765df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* UP -> UP */ 775df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 785df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 795df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else if (fnic->link_status) { 805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* DOWN -> UP */ 815df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 825df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n"); 8378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_link_up(&fnic->ctlr); 845df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else { 855df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* UP -> DOWN */ 865df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->lport->host_stats.link_failure_count++; 875df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 885df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n"); 8978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_link_down(&fnic->ctlr); 905df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 915df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 925df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 935df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 945df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar/* 955df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * This function passes incoming fabric frames to libFC 965df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar */ 975df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarvoid fnic_handle_frame(struct work_struct *work) 985df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 995df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = container_of(work, struct fnic, frame_work); 1005df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_lport *lp = fnic->lport; 1015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 1025df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct sk_buff *skb; 1035df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp; 1045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 1055df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar while ((skb = skb_dequeue(&fnic->frame_queue))) { 1065df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 1075df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->fnic_lock, flags); 1085df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->stop_rx_link_events) { 1095df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 1105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb(skb); 1115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return; 1125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 1135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fp = (struct fc_frame *)skb; 11478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 11578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* 11678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * If we're in a transitional state, just re-queue and return. 11778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * The queue will be serviced when we get to a stable state. 11878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 11978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fnic->state != FNIC_IN_FC_MODE && 12078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic->state != FNIC_IN_ETH_MODE) { 12178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_queue_head(&fnic->frame_queue, skb); 12278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->fnic_lock, flags); 12378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 1245df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 1255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 1265df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 12752ff878c912215210f53c0a080552dd6ba3055a2Vasu Dev fc_exch_recv(lp, fp); 1285df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 1295df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 1305df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 13178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 13278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_import_rq_eth_pkt() - handle received FCoE or FIP frame. 13378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fnic: fnic instance. 13478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @skb: Ethernet Frame. 13578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 13678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtstatic inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb) 1375df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 1385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp; 1395df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct ethhdr *eh; 1405df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fcoe_hdr *fcoe_hdr; 1415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fcoe_crc_eof *ft; 1425df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 14378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* 14478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Undo VLAN encapsulation if present. 14578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 1465df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eh = (struct ethhdr *)skb->data; 14778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (eh->h_proto == htons(ETH_P_8021Q)) { 14878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 14978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 15078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_reset_mac_header(skb); 15178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 15278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (eh->h_proto == htons(ETH_P_FIP)) { 15378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_pull(skb, sizeof(*eh)); 15478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_recv(&fnic->ctlr, skb); 15578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return 1; /* let caller know packet was used */ 15678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 15778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (eh->h_proto != htons(ETH_P_FCOE)) 15878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt goto drop; 15978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_set_network_header(skb, sizeof(*eh)); 16078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_pull(skb, sizeof(*eh)); 1615df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 1625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe_hdr = (struct fcoe_hdr *)skb->data; 1635df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER) 16478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt goto drop; 1655df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 1665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fp = (struct fc_frame *)skb; 1675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fc_frame_init(fp); 1685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fr_sof(fp) = fcoe_hdr->fcoe_sof; 1695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_pull(skb, sizeof(struct fcoe_hdr)); 17078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_reset_transport_header(skb); 1715df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 17278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt ft = (struct fcoe_crc_eof *)(skb->data + skb->len - sizeof(*ft)); 1735df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fr_eof(fp) = ft->fcoe_eof; 17478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_trim(skb, skb->len - sizeof(*ft)); 1755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return 0; 17678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtdrop: 17778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt dev_kfree_skb_irq(skb); 17878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return -1; 1795df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 1805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 18178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 18278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_update_mac_locked() - set data MAC address and filters. 18378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fnic: fnic instance. 18478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @new: newly-assigned FCoE MAC address. 18578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 18678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Called with the fnic lock held. 18778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 18878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtvoid fnic_update_mac_locked(struct fnic *fnic, u8 *new) 1895df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 19078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt u8 *ctl = fnic->ctlr.ctl_src_addr; 19178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt u8 *data = fnic->data_src_addr; 1925df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 19378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (is_zero_ether_addr(new)) 19478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt new = ctl; 19578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!compare_ether_addr(data, new)) 19678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 19778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "update_mac %pM\n", new); 19878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!is_zero_ether_addr(data) && compare_ether_addr(data, ctl)) 19978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vnic_dev_del_addr(fnic->vdev, data); 20078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt memcpy(data, new, ETH_ALEN); 20178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (compare_ether_addr(new, ctl)) 20278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vnic_dev_add_addr(fnic->vdev, new); 20378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt} 2045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 20578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 20678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_update_mac() - set data MAC address and filters. 20778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @lport: local port. 20878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @new: newly-assigned FCoE MAC address. 20978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 21078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtvoid fnic_update_mac(struct fc_lport *lport, u8 *new) 21178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt{ 21278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct fnic *fnic = lport_priv(lport); 2135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 21478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irq(&fnic->fnic_lock); 21578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_update_mac_locked(fnic, new); 21678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irq(&fnic->fnic_lock); 21778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt} 2185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 21978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 22078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_set_port_id() - set the port_ID after successful FLOGI. 22178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @lport: local port. 22278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @port_id: assigned FC_ID. 22378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fp: received frame containing the FLOGI accept or NULL. 22478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 22578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * This is called from libfc when a new FC_ID has been assigned. 22678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * This causes us to reset the firmware to FC_MODE and setup the new MAC 22778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * address and FC_ID. 22878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 22978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * It is also called with FC_ID 0 when we're logged off. 23078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 23178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * If the FC_ID is due to point-to-point, fp may be NULL. 23278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 23378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtvoid fnic_set_port_id(struct fc_lport *lport, u32 port_id, struct fc_frame *fp) 23478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt{ 23578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct fnic *fnic = lport_priv(lport); 23678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt u8 *mac; 23778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt int ret; 2385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 23978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt FNIC_FCS_DBG(KERN_DEBUG, lport->host, "set port_id %x fp %p\n", 24078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt port_id, fp); 2415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 24278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* 24378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * If we're clearing the FC_ID, change to use the ctl_src_addr. 24478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Set ethernet mode to send FLOGI. 24578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 24678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!port_id) { 24778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_update_mac(lport, fnic->ctlr.ctl_src_addr); 24878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_set_eth_mode(fnic); 24978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 25078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 2515df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 25278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fp) { 25378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt mac = fr_cb(fp)->granted_mac; 25478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (is_zero_ether_addr(mac)) { 25578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* non-FIP - FLOGI already accepted - ignore return */ 25678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_recv_flogi(&fnic->ctlr, lport, fp); 2575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 25878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_update_mac(lport, mac); 25978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 2605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 26178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* Change state to reflect transition to FC mode */ 26278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irq(&fnic->fnic_lock); 26378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fnic->state == FNIC_IN_ETH_MODE || fnic->state == FNIC_IN_FC_MODE) 2645df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->state = FNIC_IN_ETH_TRANS_FC_MODE; 26578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt else { 2665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 2675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "Unexpected fnic state %s while" 2685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar " processing flogi resp\n", 2695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_state_to_str(fnic->state)); 27078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irq(&fnic->fnic_lock); 27178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 2725df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 27378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irq(&fnic->fnic_lock); 2745df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 2755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* 27678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Send FLOGI registration to firmware to set up FC mode. 27778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * The new address will be set up when registration completes. 2785df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar */ 27978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt ret = fnic_flogi_reg_handler(fnic, port_id); 2805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 2815df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (ret < 0) { 28278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irq(&fnic->fnic_lock); 2835df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) 2845df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->state = FNIC_IN_ETH_MODE; 28578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irq(&fnic->fnic_lock); 2865df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 2875df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 2885df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 2895df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarstatic void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc 2905df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar *cq_desc, struct vnic_rq_buf *buf, 2915df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar int skipped __attribute__((unused)), 2925df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar void *opaque) 2935df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 2945df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(rq->vdev); 2955df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct sk_buff *skb; 2965df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp; 2975df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned int eth_hdrs_stripped; 2985df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 type, color, eop, sop, ingress_port, vlan_stripped; 2995df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 fcoe = 0, fcoe_sof, fcoe_eof; 3005df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0; 3015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; 3025df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc; 3035df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 fcs_ok = 1, packet_error = 0; 3045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u16 q_number, completed_index, bytes_written = 0, vlan, checksum; 3055df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u32 rss_hash; 3065df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u16 exchange_id, tmpl; 3075df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 sof = 0; 3085df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u8 eof = 0; 3095df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u32 fcp_bytes_written = 0; 3105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 3115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len, 3135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar PCI_DMA_FROMDEVICE); 3145df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb = buf->os_buf; 31578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fp = (struct fc_frame *)skb; 3165df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->os_buf = NULL; 3175df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index); 3195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (type == CQ_DESC_TYPE_RQ_FCP) { 3205df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc, 3215df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &type, &color, &q_number, &completed_index, 3225df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &eop, &sop, &fcoe_fc_crc_ok, &exchange_id, 3235df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &tmpl, &fcp_bytes_written, &sof, &eof, 3245df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &ingress_port, &packet_error, 3255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &fcoe_enc_error, &fcs_ok, &vlan_stripped, 3265df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &vlan); 3275df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdrs_stripped = 1; 32878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_trim(skb, fcp_bytes_written); 32978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fr_sof(fp) = sof; 33078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fr_eof(fp) = eof; 3315df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3325df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else if (type == CQ_DESC_TYPE_RQ_ENET) { 3335df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, 3345df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &type, &color, &q_number, &completed_index, 3355df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &ingress_port, &fcoe, &eop, &sop, 3365df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &rss_type, &csum_not_calc, &rss_hash, 3375df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &bytes_written, &packet_error, 3385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &vlan_stripped, &vlan, &checksum, 3395df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &fcoe_sof, &fcoe_fc_crc_ok, 3405df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &fcoe_enc_error, &fcoe_eof, 3415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &tcp_udp_csum_ok, &udp, &tcp, 3425df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &ipv4_csum_ok, &ipv6, &ipv4, 3435df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar &ipv4_fragment, &fcs_ok); 3445df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdrs_stripped = 0; 34578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_trim(skb, bytes_written); 34678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!fcs_ok) { 34778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 34878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt "fcs error. dropping packet.\n"); 34978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt goto drop; 35078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 35178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fnic_import_rq_eth_pkt(fnic, skb)) 35278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 3535df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3545df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else { 3555df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar /* wrong CQ type*/ 3565df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar shost_printk(KERN_ERR, fnic->lport->host, 3575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "fnic rq_cmpl wrong cq type x%x\n", type); 3585df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar goto drop; 3595df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 3605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3615df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) { 3625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 3635df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "fnic rq_cmpl fcoe x%x fcsok x%x" 3645df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar " pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err" 3655df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar " x%x\n", 3665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe, fcs_ok, packet_error, 3675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe_fc_crc_ok, fcoe_enc_error); 3685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar goto drop; 3695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 3705df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3715df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->fnic_lock, flags); 3725df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->stop_rx_link_events) { 3735df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 3745df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar goto drop; 3755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 3765df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fr_dev(fp) = fnic->lport; 3775df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 3785df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3795df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_queue_tail(&fnic->frame_queue, skb); 3805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar queue_work(fnic_event_queue, &fnic->frame_work); 3815df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3825df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return; 3835df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekardrop: 3845df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb_irq(skb); 3855df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 3865df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3875df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarstatic int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev, 3885df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct cq_desc *cq_desc, u8 type, 3895df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u16 q_number, u16 completed_index, 3905df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar void *opaque) 3915df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 3925df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(vdev); 3935df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 3945df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index, 3955df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv, 3965df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar NULL); 3975df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return 0; 3985df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 3995df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4005df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarint fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do) 4015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 4025df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned int tot_rq_work_done = 0, cur_work_done; 4035df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned int i; 4045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar int err; 4055df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4065df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar for (i = 0; i < fnic->rq_count; i++) { 4075df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do, 4085df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_rq_cmpl_handler_cont, 4095df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar NULL); 4105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (cur_work_done) { 4115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 4125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (err) 4135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar shost_printk(KERN_ERR, fnic->lport->host, 41425985edcedea6396277003854657b5f3cb31a628Lucas De Marchi "fnic_alloc_rq_frame can't alloc" 4155df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar " frame\n"); 4165df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 4175df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar tot_rq_work_done += cur_work_done; 4185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 4195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4205df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return tot_rq_work_done; 4215df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 4225df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4235df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar/* 4245df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * This function is called once at init time to allocate and fill RQ 4255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * buffers. Subsequently, it is called in the interrupt context after RQ 4265df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * buffer processing to replenish the buffers in the RQ 4275df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar */ 4285df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarint fnic_alloc_rq_frame(struct vnic_rq *rq) 4295df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 4305df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(rq->vdev); 4315df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct sk_buff *skb; 4325df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u16 len; 4335df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dma_addr_t pa; 4345df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4355df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM; 4365df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb = dev_alloc_skb(len); 4375df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (!skb) { 4385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, 4395df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar "Unable to allocate RQ sk_buff\n"); 4405df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return -ENOMEM; 4415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 4425df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_reset_mac_header(skb); 4435df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_reset_transport_header(skb); 4445df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_reset_network_header(skb); 4455df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb_put(skb, len); 4465df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE); 4475df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_queue_rq_desc(rq, skb, pa, len); 4485df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return 0; 4495df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 4505df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4515df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarvoid fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) 4525df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 4535df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp = buf->os_buf; 4545df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(rq->vdev); 4555df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4565df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len, 4575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar PCI_DMA_FROMDEVICE); 4585df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 4595df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb(fp_skb(fp)); 4605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->os_buf = NULL; 4615df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 4625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 46378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 46478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_eth_send() - Send Ethernet frame. 46578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fip: fcoe_ctlr instance. 46678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @skb: Ethernet Frame, FIP, without VLAN encapsulation. 46778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 46878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtvoid fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb) 4695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 47078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct fnic *fnic = fnic_from_ctlr(fip); 47178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct vnic_wq *wq = &fnic->wq[0]; 47278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt dma_addr_t pa; 47378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct ethhdr *eth_hdr; 47478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct vlan_ethhdr *vlan_hdr; 47578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt unsigned long flags; 47678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 47778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!fnic->vlan_hw_insert) { 47878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt eth_hdr = (struct ethhdr *)skb_mac_header(skb); 47978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, 48078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt sizeof(*vlan_hdr) - sizeof(*eth_hdr)); 48178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN); 48278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); 48378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto; 48478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id); 48578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 48678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 48778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); 48878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 48978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irqsave(&fnic->wq_lock[0], flags); 49078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (!vnic_wq_desc_avail(wq)) { 49178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE); 49278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->wq_lock[0], flags); 49378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt kfree_skb(skb); 49478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return; 49578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 49678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 49778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_queue_wq_eth_desc(wq, skb, pa, skb->len, 49878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic->vlan_hw_insert, fnic->vlan_id, 1); 49978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->wq_lock[0], flags); 5005df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 5015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 50278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/* 50378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Send FC frame. 50478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 50578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtstatic int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp) 5065df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 5075df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct vnic_wq *wq = &fnic->wq[0]; 5085df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct sk_buff *skb; 5095df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dma_addr_t pa; 5105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct ethhdr *eth_hdr; 5115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct vlan_ethhdr *vlan_hdr; 5125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fcoe_hdr *fcoe_hdr; 5135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame_header *fh; 5145df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u32 tot_len, eth_hdr_len; 5155df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar int ret = 0; 5165df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 5175df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fh = fc_frame_header_get(fp); 5195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar skb = fp_skb(fp); 5205df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 52178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) && 52278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fcoe_ctlr_els_send(&fnic->ctlr, fnic->lport, skb)) 52378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return 0; 52478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 5255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (!fnic->vlan_hw_insert) { 5265df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr); 5275df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, eth_hdr_len); 5285df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdr = (struct ethhdr *)vlan_hdr; 5295df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); 5305df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE); 5315df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id); 5325df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1); 5335df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } else { 5345df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr); 5355df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdr = (struct ethhdr *)skb_push(skb, eth_hdr_len); 5365df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar eth_hdr->h_proto = htons(ETH_P_FCOE); 5375df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1); 5385df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 5395df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 54078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fnic->ctlr.map_dest) 5415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id); 54278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt else 54378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt memcpy(eth_hdr->h_dest, fnic->ctlr.dest_addr, ETH_ALEN); 54478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN); 5455df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5465df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar tot_len = skb->len; 5475df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar BUG_ON(tot_len % 4); 5485df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5495df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar memset(fcoe_hdr, 0, sizeof(*fcoe_hdr)); 5505df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fcoe_hdr->fcoe_sof = fr_sof(fp); 5515df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (FC_FCOE_VER) 5525df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER); 5535df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5545df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE); 5555df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5565df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->wq_lock[0], flags); 5575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5585df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (!vnic_wq_desc_avail(wq)) { 5595df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pci_unmap_single(fnic->pdev, pa, 5605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar tot_len, PCI_DMA_TODEVICE); 5615df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar ret = -1; 5625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar goto fnic_send_frame_end; 5635df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 5645df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5655df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp), 5665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->vlan_hw_insert, fnic->vlan_id, 1, 1, 1); 5675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarfnic_send_frame_end: 5685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->wq_lock[0], flags); 5695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5705df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (ret) 5715df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb_any(fp_skb(fp)); 5725df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5735df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return ret; 5745df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 5755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5765df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar/* 5775df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * fnic_send 5785df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar * Routine to send a raw frame 5795df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar */ 5805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarint fnic_send(struct fc_lport *lp, struct fc_frame *fp) 5815df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 5825df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = lport_priv(lp); 5835df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 5845df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 5855df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->in_remove) { 5865df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb(fp_skb(fp)); 58778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return -1; 5885df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 5895df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 59078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt /* 59178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Queue frame if in a transitional state. 59278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * This occurs while registering the Port_ID / MAC address after FLOGI. 59378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 59478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irqsave(&fnic->fnic_lock, flags); 59578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (fnic->state != FNIC_IN_FC_MODE && fnic->state != FNIC_IN_ETH_MODE) { 59678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt skb_queue_tail(&fnic->tx_queue, fp_skb(fp)); 59778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->fnic_lock, flags); 59878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return 0; 59978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 60078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->fnic_lock, flags); 6015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 60278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt return fnic_send_frame(fnic, fp); 60378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt} 6045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 60578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 60678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_flush_tx() - send queued frames. 60778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fnic: fnic device 60878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 60978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Send frames that were waiting to go out in FC or Ethernet mode. 61078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Whenever changing modes we purge queued frames, so these frames should 61178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * be queued for the stable mode that we're in, either FC or Ethernet. 61278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 61378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Called without fnic_lock held. 61478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 61578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtvoid fnic_flush_tx(struct fnic *fnic) 61678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt{ 61778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct sk_buff *skb; 61878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt struct fc_frame *fp; 6195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 620d9e9ab56b687da0b3ecb29f7a77f25aa7ae078fbBrian Uchino while ((skb = skb_dequeue(&fnic->tx_queue))) { 62178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fp = (struct fc_frame *)skb; 62278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt fnic_send_frame(fnic, fp); 62378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt } 62478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt} 6255df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 62678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt/** 62778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * fnic_set_eth_mode() - put fnic into ethernet mode. 62878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * @fnic: fnic device 62978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * 63078112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt * Called without fnic lock held. 63178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt */ 63278112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtstatic void fnic_set_eth_mode(struct fnic *fnic) 63378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt{ 63478112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt unsigned long flags; 63578112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt enum fnic_state old_state; 63678112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt int ret; 63778112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt 63878112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_lock_irqsave(&fnic->fnic_lock, flags); 63978112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholtagain: 6405df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar old_state = fnic->state; 6415df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar switch (old_state) { 6425df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar case FNIC_IN_FC_MODE: 6435df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar case FNIC_IN_ETH_TRANS_FC_MODE: 6445df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar default: 6455df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; 6465df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->fnic_lock, flags); 6475df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6485df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar ret = fnic_fw_reset_handler(fnic); 6495df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6505df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->fnic_lock, flags); 6515df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE) 6525df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar goto again; 65378112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt if (ret) 6545df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic->state = old_state; 6555df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar break; 6565df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6575df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar case FNIC_IN_FC_TRANS_ETH_MODE: 6585df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar case FNIC_IN_ETH_MODE: 6595df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar break; 6605df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 66178112e5558064cb4d2e355aed87b2036fcdfe3ddJoe Eykholt spin_unlock_irqrestore(&fnic->fnic_lock, flags); 6625df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 6635df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6645df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarstatic void fnic_wq_complete_frame_send(struct vnic_wq *wq, 6655df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct cq_desc *cq_desc, 6665df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct vnic_wq_buf *buf, void *opaque) 6675df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 6685df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct sk_buff *skb = buf->os_buf; 6695df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp = (struct fc_frame *)skb; 6705df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(wq->vdev); 6715df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6725df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pci_unmap_single(fnic->pdev, buf->dma_addr, 6735df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->len, PCI_DMA_TODEVICE); 6745df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb_irq(fp_skb(fp)); 6755df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->os_buf = NULL; 6765df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 6775df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6785df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarstatic int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev, 6795df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct cq_desc *cq_desc, u8 type, 6805df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar u16 q_number, u16 completed_index, 6815df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar void *opaque) 6825df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 6835df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(vdev); 6845df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned long flags; 6855df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6865df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_lock_irqsave(&fnic->wq_lock[q_number], flags); 6875df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index, 6885df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_wq_complete_frame_send, NULL); 6895df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags); 6905df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6915df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return 0; 6925df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 6935df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6945df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarint fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do) 6955df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 6965df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned int wq_work_done = 0; 6975df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar unsigned int i; 6985df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 6995df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar for (i = 0; i < fnic->raw_wq_count; i++) { 7005df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i], 7015df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar work_to_do, 7025df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar fnic_wq_cmpl_handler_cont, 7035df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar NULL); 7045df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar } 7055df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 7065df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar return wq_work_done; 7075df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 7085df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 7095df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 7105df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekarvoid fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) 7115df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar{ 7125df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fc_frame *fp = buf->os_buf; 7135df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar struct fnic *fnic = vnic_dev_priv(wq->vdev); 7145df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 7155df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar pci_unmap_single(fnic->pdev, buf->dma_addr, 7165df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->len, PCI_DMA_TODEVICE); 7175df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar 7185df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar dev_kfree_skb(fp_skb(fp)); 7195df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar buf->os_buf = NULL; 7205df6d737dd4b0fe9eccf943abb3677cfea05a6c4Abhijeet Joglekar} 721