| /* bnx2fc_fcoe.c: QLogic Linux FCoE offload driver. |
| * This file contains the code that interacts with libfc, libfcoe, |
| * cnic modules to create FCoE instances, send/receive non-offloaded |
| * FIP/FCoE packets, listen to link events etc. |
| * |
| * Copyright (c) 2008-2013 Broadcom Corporation |
| * Copyright (c) 2014-2015 QLogic Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation. |
| * |
| * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) |
| */ |
| |
| #include "bnx2fc.h" |
| |
| static struct list_head adapter_list; |
| static struct list_head if_list; |
| static u32 adapter_count; |
| static DEFINE_MUTEX(bnx2fc_dev_lock); |
| DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); |
| |
| #define DRV_MODULE_NAME "bnx2fc" |
| #define DRV_MODULE_VERSION BNX2FC_VERSION |
| #define DRV_MODULE_RELDATE "October 15, 2015" |
| |
| |
| static char version[] = |
| "QLogic FCoE Driver " DRV_MODULE_NAME \ |
| " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; |
| |
| |
| MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); |
| MODULE_DESCRIPTION("QLogic FCoE Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_MODULE_VERSION); |
| |
| #define BNX2FC_MAX_QUEUE_DEPTH 256 |
| #define BNX2FC_MIN_QUEUE_DEPTH 32 |
| #define FCOE_WORD_TO_BYTE 4 |
| |
| static struct scsi_transport_template *bnx2fc_transport_template; |
| static struct scsi_transport_template *bnx2fc_vport_xport_template; |
| |
| struct workqueue_struct *bnx2fc_wq; |
| |
| /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. |
| * Here the io threads are per cpu but the l2 thread is just one |
| */ |
| struct fcoe_percpu_s bnx2fc_global; |
| DEFINE_SPINLOCK(bnx2fc_global_lock); |
| |
| static struct cnic_ulp_ops bnx2fc_cnic_cb; |
| static struct libfc_function_template bnx2fc_libfc_fcn_templ; |
| static struct scsi_host_template bnx2fc_shost_template; |
| static struct fc_function_template bnx2fc_transport_function; |
| static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ; |
| static struct fc_function_template bnx2fc_vport_xport_function; |
| static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode); |
| static void __bnx2fc_destroy(struct bnx2fc_interface *interface); |
| static int bnx2fc_destroy(struct net_device *net_device); |
| static int bnx2fc_enable(struct net_device *netdev); |
| static int bnx2fc_disable(struct net_device *netdev); |
| |
| /* fcoe_syfs control interface handlers */ |
| static int bnx2fc_ctlr_alloc(struct net_device *netdev); |
| static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev); |
| |
| static void bnx2fc_recv_frame(struct sk_buff *skb); |
| |
| static void bnx2fc_start_disc(struct bnx2fc_interface *interface); |
| static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); |
| static int bnx2fc_lport_config(struct fc_lport *lport); |
| static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba); |
| static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); |
| static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); |
| static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); |
| static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); |
| static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, |
| struct device *parent, int npiv); |
| static void bnx2fc_destroy_work(struct work_struct *work); |
| |
| static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); |
| static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device |
| *phys_dev); |
| static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface); |
| static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); |
| |
| static int bnx2fc_fw_init(struct bnx2fc_hba *hba); |
| static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); |
| |
| static void bnx2fc_port_shutdown(struct fc_lport *lport); |
| static void bnx2fc_stop(struct bnx2fc_interface *interface); |
| static int __init bnx2fc_mod_init(void); |
| static void __exit bnx2fc_mod_exit(void); |
| |
| unsigned int bnx2fc_debug_level; |
| module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); |
| MODULE_PARM_DESC(debug_logging, |
| "Option to enable extended logging,\n" |
| "\t\tDefault is 0 - no logging.\n" |
| "\t\t0x01 - SCSI cmd error, cleanup.\n" |
| "\t\t0x02 - Session setup, cleanup, etc.\n" |
| "\t\t0x04 - lport events, link, mtu, etc.\n" |
| "\t\t0x08 - ELS logs.\n" |
| "\t\t0x10 - fcoe L2 fame related logs.\n" |
| "\t\t0xff - LOG all messages."); |
| |
| uint bnx2fc_devloss_tmo; |
| module_param_named(devloss_tmo, bnx2fc_devloss_tmo, uint, S_IRUGO); |
| MODULE_PARM_DESC(devloss_tmo, " Change devloss_tmo for the remote ports " |
| "attached via bnx2fc."); |
| |
| uint bnx2fc_max_luns = BNX2FC_MAX_LUN; |
| module_param_named(max_luns, bnx2fc_max_luns, uint, S_IRUGO); |
| MODULE_PARM_DESC(max_luns, " Change the default max_lun per SCSI host. Default " |
| "0xffff."); |
| |
| uint bnx2fc_queue_depth; |
| module_param_named(queue_depth, bnx2fc_queue_depth, uint, S_IRUGO); |
| MODULE_PARM_DESC(queue_depth, " Change the default queue depth of SCSI devices " |
| "attached via bnx2fc."); |
| |
| uint bnx2fc_log_fka; |
| module_param_named(log_fka, bnx2fc_log_fka, uint, S_IRUGO|S_IWUSR); |
| MODULE_PARM_DESC(log_fka, " Print message to kernel log when fcoe is " |
| "initiating a FIP keep alive when debug logging is enabled."); |
| |
| static inline struct net_device *bnx2fc_netdev(const struct fc_lport *lport) |
| { |
| return ((struct bnx2fc_interface *) |
| ((struct fcoe_port *)lport_priv(lport))->priv)->netdev; |
| } |
| |
| static void bnx2fc_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) |
| { |
| struct fcoe_ctlr_device *ctlr_dev = |
| fcoe_fcf_dev_to_ctlr_dev(fcf_dev); |
| struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
| struct bnx2fc_interface *fcoe = fcoe_ctlr_priv(ctlr); |
| |
| fcf_dev->vlan_id = fcoe->vlan_id; |
| } |
| |
| static void bnx2fc_clean_rx_queue(struct fc_lport *lp) |
| { |
| struct fcoe_percpu_s *bg; |
| struct fcoe_rcv_info *fr; |
| struct sk_buff_head *list; |
| struct sk_buff *skb, *next; |
| struct sk_buff *head; |
| |
| bg = &bnx2fc_global; |
| spin_lock_bh(&bg->fcoe_rx_list.lock); |
| list = &bg->fcoe_rx_list; |
| head = list->next; |
| for (skb = head; skb != (struct sk_buff *)list; |
| skb = next) { |
| next = skb->next; |
| fr = fcoe_dev_from_skb(skb); |
| if (fr->fr_dev == lp) { |
| __skb_unlink(skb, list); |
| kfree_skb(skb); |
| } |
| } |
| spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| } |
| |
| int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) |
| { |
| int rc; |
| spin_lock(&bnx2fc_global_lock); |
| rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); |
| spin_unlock(&bnx2fc_global_lock); |
| |
| return rc; |
| } |
| |
| static void bnx2fc_abort_io(struct fc_lport *lport) |
| { |
| /* |
| * This function is no-op for bnx2fc, but we do |
| * not want to leave it as NULL either, as libfc |
| * can call the default function which is |
| * fc_fcp_abort_io. |
| */ |
| } |
| |
| static void bnx2fc_cleanup(struct fc_lport *lport) |
| { |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| struct bnx2fc_rport *tgt; |
| int i; |
| |
| BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| mutex_lock(&hba->hba_mutex); |
| spin_lock_bh(&hba->hba_lock); |
| for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { |
| tgt = hba->tgt_ofld_list[i]; |
| if (tgt) { |
| /* Cleanup IOs belonging to requested vport */ |
| if (tgt->port == port) { |
| spin_unlock_bh(&hba->hba_lock); |
| BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); |
| bnx2fc_flush_active_ios(tgt); |
| spin_lock_bh(&hba->hba_lock); |
| } |
| } |
| } |
| spin_unlock_bh(&hba->hba_lock); |
| mutex_unlock(&hba->hba_mutex); |
| } |
| |
| static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, |
| struct fc_frame *fp) |
| { |
| struct fc_rport_priv *rdata = tgt->rdata; |
| struct fc_frame_header *fh; |
| int rc = 0; |
| |
| fh = fc_frame_header_get(fp); |
| BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " |
| "r_ctl = 0x%x\n", rdata->ids.port_id, |
| ntohs(fh->fh_ox_id), fh->fh_r_ctl); |
| if ((fh->fh_type == FC_TYPE_ELS) && |
| (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
| |
| switch (fc_frame_payload_op(fp)) { |
| case ELS_ADISC: |
| rc = bnx2fc_send_adisc(tgt, fp); |
| break; |
| case ELS_LOGO: |
| rc = bnx2fc_send_logo(tgt, fp); |
| break; |
| case ELS_RLS: |
| rc = bnx2fc_send_rls(tgt, fp); |
| break; |
| default: |
| break; |
| } |
| } else if ((fh->fh_type == FC_TYPE_BLS) && |
| (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) |
| BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); |
| else { |
| BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " |
| "rctl 0x%x thru non-offload path\n", |
| fh->fh_type, fh->fh_r_ctl); |
| return -ENODEV; |
| } |
| if (rc) |
| return -ENOMEM; |
| else |
| return 0; |
| } |
| |
| /** |
| * bnx2fc_xmit - bnx2fc's FCoE frame transmit function |
| * |
| * @lport: the associated local port |
| * @fp: the fc_frame to be transmitted |
| */ |
| static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) |
| { |
| struct ethhdr *eh; |
| struct fcoe_crc_eof *cp; |
| struct sk_buff *skb; |
| struct fc_frame_header *fh; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| struct bnx2fc_hba *hba; |
| struct fcoe_port *port; |
| struct fcoe_hdr *hp; |
| struct bnx2fc_rport *tgt; |
| struct fc_stats *stats; |
| u8 sof, eof; |
| u32 crc; |
| unsigned int hlen, tlen, elen; |
| int wlen, rc = 0; |
| |
| port = (struct fcoe_port *)lport_priv(lport); |
| interface = port->priv; |
| ctlr = bnx2fc_to_ctlr(interface); |
| hba = interface->hba; |
| |
| fh = fc_frame_header_get(fp); |
| |
| skb = fp_skb(fp); |
| if (!lport->link_up) { |
| BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
| if (!ctlr->sel_fcf) { |
| BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); |
| kfree_skb(skb); |
| return -EINVAL; |
| } |
| if (fcoe_ctlr_els_send(ctlr, lport, skb)) |
| return 0; |
| } |
| |
| sof = fr_sof(fp); |
| eof = fr_eof(fp); |
| |
| /* |
| * Snoop the frame header to check if the frame is for |
| * an offloaded session |
| */ |
| /* |
| * tgt_ofld_list access is synchronized using |
| * both hba mutex and hba lock. Atleast hba mutex or |
| * hba lock needs to be held for read access. |
| */ |
| |
| spin_lock_bh(&hba->hba_lock); |
| tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); |
| if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { |
| /* This frame is for offloaded session */ |
| BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " |
| "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); |
| spin_unlock_bh(&hba->hba_lock); |
| rc = bnx2fc_xmit_l2_frame(tgt, fp); |
| if (rc != -ENODEV) { |
| kfree_skb(skb); |
| return rc; |
| } |
| } else { |
| spin_unlock_bh(&hba->hba_lock); |
| } |
| |
| elen = sizeof(struct ethhdr); |
| hlen = sizeof(struct fcoe_hdr); |
| tlen = sizeof(struct fcoe_crc_eof); |
| wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; |
| |
| skb->ip_summed = CHECKSUM_NONE; |
| crc = fcoe_fc_crc(fp); |
| |
| /* copy port crc and eof to the skb buff */ |
| if (skb_is_nonlinear(skb)) { |
| skb_frag_t *frag; |
| if (bnx2fc_get_paged_crc_eof(skb, tlen)) { |
| kfree_skb(skb); |
| return -ENOMEM; |
| } |
| frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; |
| cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; |
| } else { |
| cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); |
| } |
| |
| memset(cp, 0, sizeof(*cp)); |
| cp->fcoe_eof = eof; |
| cp->fcoe_crc32 = cpu_to_le32(~crc); |
| if (skb_is_nonlinear(skb)) { |
| kunmap_atomic(cp); |
| cp = NULL; |
| } |
| |
| /* adjust skb network/transport offsets to match mac/fcoe/port */ |
| skb_push(skb, elen + hlen); |
| skb_reset_mac_header(skb); |
| skb_reset_network_header(skb); |
| skb->mac_len = elen; |
| skb->protocol = htons(ETH_P_FCOE); |
| skb->dev = interface->netdev; |
| |
| /* fill up mac and fcoe headers */ |
| eh = eth_hdr(skb); |
| eh->h_proto = htons(ETH_P_FCOE); |
| if (ctlr->map_dest) |
| fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); |
| else |
| /* insert GW address */ |
| memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); |
| |
| if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) |
| memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); |
| else |
| memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
| |
| hp = (struct fcoe_hdr *)(eh + 1); |
| memset(hp, 0, sizeof(*hp)); |
| if (FC_FCOE_VER) |
| FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); |
| hp->fcoe_sof = sof; |
| |
| /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
| if (lport->seq_offload && fr_max_payload(fp)) { |
| skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
| skb_shinfo(skb)->gso_size = fr_max_payload(fp); |
| } else { |
| skb_shinfo(skb)->gso_type = 0; |
| skb_shinfo(skb)->gso_size = 0; |
| } |
| |
| /*update tx stats */ |
| stats = per_cpu_ptr(lport->stats, get_cpu()); |
| stats->TxFrames++; |
| stats->TxWords += wlen; |
| put_cpu(); |
| |
| /* send down to lld */ |
| fr_dev(fp) = lport; |
| if (port->fcoe_pending_queue.qlen) |
| fcoe_check_wait_queue(lport, skb); |
| else if (fcoe_start_io(skb)) |
| fcoe_check_wait_queue(lport, skb); |
| |
| return 0; |
| } |
| |
| /** |
| * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ |
| * |
| * @skb: the receive socket buffer |
| * @dev: associated net device |
| * @ptype: context |
| * @olddev: last device |
| * |
| * This function receives the packet and builds FC frame and passes it up |
| */ |
| static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, |
| struct packet_type *ptype, struct net_device *olddev) |
| { |
| struct fc_lport *lport; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| struct fc_frame_header *fh; |
| struct fcoe_rcv_info *fr; |
| struct fcoe_percpu_s *bg; |
| struct sk_buff *tmp_skb; |
| unsigned short oxid; |
| |
| interface = container_of(ptype, struct bnx2fc_interface, |
| fcoe_packet_type); |
| ctlr = bnx2fc_to_ctlr(interface); |
| lport = ctlr->lp; |
| |
| if (unlikely(lport == NULL)) { |
| printk(KERN_ERR PFX "bnx2fc_rcv: lport is NULL\n"); |
| goto err; |
| } |
| |
| tmp_skb = skb_share_check(skb, GFP_ATOMIC); |
| if (!tmp_skb) |
| goto err; |
| |
| skb = tmp_skb; |
| |
| if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { |
| printk(KERN_ERR PFX "bnx2fc_rcv: Wrong FC type frame\n"); |
| goto err; |
| } |
| |
| /* |
| * Check for minimum frame length, and make sure required FCoE |
| * and FC headers are pulled into the linear data area. |
| */ |
| if (unlikely((skb->len < FCOE_MIN_FRAME) || |
| !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
| goto err; |
| |
| skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); |
| fh = (struct fc_frame_header *) skb_transport_header(skb); |
| |
| oxid = ntohs(fh->fh_ox_id); |
| |
| fr = fcoe_dev_from_skb(skb); |
| fr->fr_dev = lport; |
| |
| bg = &bnx2fc_global; |
| spin_lock(&bg->fcoe_rx_list.lock); |
| |
| __skb_queue_tail(&bg->fcoe_rx_list, skb); |
| if (bg->fcoe_rx_list.qlen == 1) |
| wake_up_process(bg->kthread); |
| |
| spin_unlock(&bg->fcoe_rx_list.lock); |
| |
| return 0; |
| err: |
| kfree_skb(skb); |
| return -1; |
| } |
| |
| static int bnx2fc_l2_rcv_thread(void *arg) |
| { |
| struct fcoe_percpu_s *bg = arg; |
| struct sk_buff *skb; |
| |
| set_user_nice(current, MIN_NICE); |
| set_current_state(TASK_INTERRUPTIBLE); |
| while (!kthread_should_stop()) { |
| schedule(); |
| spin_lock_bh(&bg->fcoe_rx_list.lock); |
| while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { |
| spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| bnx2fc_recv_frame(skb); |
| spin_lock_bh(&bg->fcoe_rx_list.lock); |
| } |
| __set_current_state(TASK_INTERRUPTIBLE); |
| spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| } |
| __set_current_state(TASK_RUNNING); |
| return 0; |
| } |
| |
| |
| static void bnx2fc_recv_frame(struct sk_buff *skb) |
| { |
| u32 fr_len; |
| struct fc_lport *lport; |
| struct fcoe_rcv_info *fr; |
| struct fc_stats *stats; |
| struct fc_frame_header *fh; |
| struct fcoe_crc_eof crc_eof; |
| struct fc_frame *fp; |
| struct fc_lport *vn_port; |
| struct fcoe_port *port; |
| u8 *mac = NULL; |
| u8 *dest_mac = NULL; |
| struct fcoe_hdr *hp; |
| |
| fr = fcoe_dev_from_skb(skb); |
| lport = fr->fr_dev; |
| if (unlikely(lport == NULL)) { |
| printk(KERN_ERR PFX "Invalid lport struct\n"); |
| kfree_skb(skb); |
| return; |
| } |
| |
| if (skb_is_nonlinear(skb)) |
| skb_linearize(skb); |
| mac = eth_hdr(skb)->h_source; |
| dest_mac = eth_hdr(skb)->h_dest; |
| |
| /* Pull the header */ |
| hp = (struct fcoe_hdr *) skb_network_header(skb); |
| fh = (struct fc_frame_header *) skb_transport_header(skb); |
| skb_pull(skb, sizeof(struct fcoe_hdr)); |
| fr_len = skb->len - sizeof(struct fcoe_crc_eof); |
| |
| fp = (struct fc_frame *)skb; |
| fc_frame_init(fp); |
| fr_dev(fp) = lport; |
| fr_sof(fp) = hp->fcoe_sof; |
| if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { |
| kfree_skb(skb); |
| return; |
| } |
| fr_eof(fp) = crc_eof.fcoe_eof; |
| fr_crc(fp) = crc_eof.fcoe_crc32; |
| if (pskb_trim(skb, fr_len)) { |
| kfree_skb(skb); |
| return; |
| } |
| |
| fh = fc_frame_header_get(fp); |
| |
| vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); |
| if (vn_port) { |
| port = lport_priv(vn_port); |
| if (!ether_addr_equal(port->data_src_addr, dest_mac)) { |
| BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); |
| kfree_skb(skb); |
| return; |
| } |
| } |
| if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && |
| fh->fh_type == FC_TYPE_FCP) { |
| /* Drop FCP data. We dont this in L2 path */ |
| kfree_skb(skb); |
| return; |
| } |
| if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && |
| fh->fh_type == FC_TYPE_ELS) { |
| switch (fc_frame_payload_op(fp)) { |
| case ELS_LOGO: |
| if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
| /* drop non-FIP LOGO */ |
| kfree_skb(skb); |
| return; |
| } |
| break; |
| } |
| } |
| |
| if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { |
| /* Drop incoming ABTS */ |
| kfree_skb(skb); |
| return; |
| } |
| |
| stats = per_cpu_ptr(lport->stats, smp_processor_id()); |
| stats->RxFrames++; |
| stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; |
| |
| if (le32_to_cpu(fr_crc(fp)) != |
| ~crc32(~0, skb->data, fr_len)) { |
| if (stats->InvalidCRCCount < 5) |
| printk(KERN_WARNING PFX "dropping frame with " |
| "CRC error\n"); |
| stats->InvalidCRCCount++; |
| kfree_skb(skb); |
| return; |
| } |
| fc_exch_recv(lport, fp); |
| } |
| |
| /** |
| * bnx2fc_percpu_io_thread - thread per cpu for ios |
| * |
| * @arg: ptr to bnx2fc_percpu_info structure |
| */ |
| static int bnx2fc_percpu_io_thread(void *arg) |
| { |
| struct bnx2fc_percpu_s *p = arg; |
| struct bnx2fc_work *work, *tmp; |
| LIST_HEAD(work_list); |
| |
| set_user_nice(current, MIN_NICE); |
| set_current_state(TASK_INTERRUPTIBLE); |
| while (!kthread_should_stop()) { |
| schedule(); |
| spin_lock_bh(&p->fp_work_lock); |
| while (!list_empty(&p->work_list)) { |
| list_splice_init(&p->work_list, &work_list); |
| spin_unlock_bh(&p->fp_work_lock); |
| |
| list_for_each_entry_safe(work, tmp, &work_list, list) { |
| list_del_init(&work->list); |
| bnx2fc_process_cq_compl(work->tgt, work->wqe); |
| kfree(work); |
| } |
| |
| spin_lock_bh(&p->fp_work_lock); |
| } |
| __set_current_state(TASK_INTERRUPTIBLE); |
| spin_unlock_bh(&p->fp_work_lock); |
| } |
| __set_current_state(TASK_RUNNING); |
| |
| return 0; |
| } |
| |
| static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) |
| { |
| struct fc_host_statistics *bnx2fc_stats; |
| struct fc_lport *lport = shost_priv(shost); |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| struct fcoe_statistics_params *fw_stats; |
| int rc = 0; |
| |
| fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; |
| if (!fw_stats) |
| return NULL; |
| |
| bnx2fc_stats = fc_get_host_stats(shost); |
| |
| init_completion(&hba->stat_req_done); |
| if (bnx2fc_send_stat_req(hba)) |
| return bnx2fc_stats; |
| rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); |
| if (!rc) { |
| BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); |
| return bnx2fc_stats; |
| } |
| BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt); |
| bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt; |
| BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt); |
| bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt; |
| BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt); |
| bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4); |
| BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt); |
| bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt; |
| BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt); |
| bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4); |
| |
| bnx2fc_stats->dumped_frames = 0; |
| bnx2fc_stats->lip_count = 0; |
| bnx2fc_stats->nos_count = 0; |
| bnx2fc_stats->loss_of_sync_count = 0; |
| bnx2fc_stats->loss_of_signal_count = 0; |
| bnx2fc_stats->prim_seq_protocol_err_count = 0; |
| |
| memcpy(&hba->prev_stats, hba->stats_buffer, |
| sizeof(struct fcoe_statistics_params)); |
| return bnx2fc_stats; |
| } |
| |
| static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) |
| { |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| struct Scsi_Host *shost = lport->host; |
| int rc = 0; |
| |
| shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; |
| shost->max_lun = bnx2fc_max_luns; |
| shost->max_id = BNX2FC_MAX_FCP_TGT; |
| shost->max_channel = 0; |
| if (lport->vport) |
| shost->transportt = bnx2fc_vport_xport_template; |
| else |
| shost->transportt = bnx2fc_transport_template; |
| |
| /* Add the new host to SCSI-ml */ |
| rc = scsi_add_host(lport->host, dev); |
| if (rc) { |
| printk(KERN_ERR PFX "Error on scsi_add_host\n"); |
| return rc; |
| } |
| if (!lport->vport) |
| fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
| snprintf(fc_host_symbolic_name(lport->host), 256, |
| "%s (QLogic %s) v%s over %s", |
| BNX2FC_NAME, hba->chip_num, BNX2FC_VERSION, |
| interface->netdev->name); |
| |
| return 0; |
| } |
| |
| static int bnx2fc_link_ok(struct fc_lport *lport) |
| { |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| struct net_device *dev = hba->phys_dev; |
| int rc = 0; |
| |
| if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) |
| clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| else { |
| set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| rc = -1; |
| } |
| return rc; |
| } |
| |
| /** |
| * bnx2fc_get_link_state - get network link state |
| * |
| * @hba: adapter instance pointer |
| * |
| * updates adapter structure flag based on netdev state |
| */ |
| void bnx2fc_get_link_state(struct bnx2fc_hba *hba) |
| { |
| if (test_bit(__LINK_STATE_NOCARRIER, &hba->phys_dev->state)) |
| set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| else |
| clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| } |
| |
| static int bnx2fc_net_config(struct fc_lport *lport, struct net_device *netdev) |
| { |
| struct bnx2fc_hba *hba; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| struct fcoe_port *port; |
| u64 wwnn, wwpn; |
| |
| port = lport_priv(lport); |
| interface = port->priv; |
| ctlr = bnx2fc_to_ctlr(interface); |
| hba = interface->hba; |
| |
| /* require support for get_pauseparam ethtool op. */ |
| if (!hba->phys_dev->ethtool_ops || |
| !hba->phys_dev->ethtool_ops->get_pauseparam) |
| return -EOPNOTSUPP; |
| |
| if (fc_set_mfs(lport, BNX2FC_MFS)) |
| return -EINVAL; |
| |
| skb_queue_head_init(&port->fcoe_pending_queue); |
| port->fcoe_pending_queue_active = 0; |
| setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); |
| |
| fcoe_link_speed_update(lport); |
| |
| if (!lport->vport) { |
| if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) |
| wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
| 1, 0); |
| BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); |
| fc_set_wwnn(lport, wwnn); |
| |
| if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) |
| wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
| 2, 0); |
| |
| BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); |
| fc_set_wwpn(lport, wwpn); |
| } |
| |
| return 0; |
| } |
| |
| static void bnx2fc_destroy_timer(unsigned long data) |
| { |
| struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; |
| |
| printk(KERN_ERR PFX "ERROR:bnx2fc_destroy_timer - " |
| "Destroy compl not received!!\n"); |
| set_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); |
| wake_up_interruptible(&hba->destroy_wait); |
| } |
| |
| /** |
| * bnx2fc_indicate_netevent - Generic netdev event handler |
| * |
| * @context: adapter structure pointer |
| * @event: event type |
| * @vlan_id: vlan id - associated vlan id with this event |
| * |
| * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and |
| * NETDEV_CHANGE_MTU events. Handle NETDEV_UNREGISTER only for vlans. |
| */ |
| static void bnx2fc_indicate_netevent(void *context, unsigned long event, |
| u16 vlan_id) |
| { |
| struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; |
| struct fcoe_ctlr_device *cdev; |
| struct fc_lport *lport; |
| struct fc_lport *vport; |
| struct bnx2fc_interface *interface, *tmp; |
| struct fcoe_ctlr *ctlr; |
| int wait_for_upload = 0; |
| u32 link_possible = 1; |
| |
| if (vlan_id != 0 && event != NETDEV_UNREGISTER) |
| return; |
| |
| switch (event) { |
| case NETDEV_UP: |
| if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) |
| printk(KERN_ERR "indicate_netevent: "\ |
| "hba is not UP!!\n"); |
| break; |
| |
| case NETDEV_DOWN: |
| clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| link_possible = 0; |
| break; |
| |
| case NETDEV_GOING_DOWN: |
| set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| link_possible = 0; |
| break; |
| |
| case NETDEV_CHANGE: |
| break; |
| |
| case NETDEV_UNREGISTER: |
| if (!vlan_id) |
| return; |
| mutex_lock(&bnx2fc_dev_lock); |
| list_for_each_entry_safe(interface, tmp, &if_list, list) { |
| if (interface->hba == hba && |
| interface->vlan_id == (vlan_id & VLAN_VID_MASK)) |
| __bnx2fc_destroy(interface); |
| } |
| mutex_unlock(&bnx2fc_dev_lock); |
| |
| /* Ensure ALL destroy work has been completed before return */ |
| flush_workqueue(bnx2fc_wq); |
| return; |
| |
| default: |
| return; |
| } |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| list_for_each_entry(interface, &if_list, list) { |
| |
| if (interface->hba != hba) |
| continue; |
| |
| ctlr = bnx2fc_to_ctlr(interface); |
| lport = ctlr->lp; |
| BNX2FC_HBA_DBG(lport, "netevent handler - event=%s %ld\n", |
| interface->netdev->name, event); |
| |
| fcoe_link_speed_update(lport); |
| |
| cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
| |
| if (link_possible && !bnx2fc_link_ok(lport)) { |
| switch (cdev->enabled) { |
| case FCOE_CTLR_DISABLED: |
| pr_info("Link up while interface is disabled.\n"); |
| break; |
| case FCOE_CTLR_ENABLED: |
| case FCOE_CTLR_UNUSED: |
| /* Reset max recv frame size to default */ |
| fc_set_mfs(lport, BNX2FC_MFS); |
| /* |
| * ctlr link up will only be handled during |
| * enable to avoid sending discovery |
| * solicitation on a stale vlan |
| */ |
| if (interface->enabled) |
| fcoe_ctlr_link_up(ctlr); |
| }; |
| } else if (fcoe_ctlr_link_down(ctlr)) { |
| switch (cdev->enabled) { |
| case FCOE_CTLR_DISABLED: |
| pr_info("Link down while interface is disabled.\n"); |
| break; |
| case FCOE_CTLR_ENABLED: |
| case FCOE_CTLR_UNUSED: |
| mutex_lock(&lport->lp_mutex); |
| list_for_each_entry(vport, &lport->vports, list) |
| fc_host_port_type(vport->host) = |
| FC_PORTTYPE_UNKNOWN; |
| mutex_unlock(&lport->lp_mutex); |
| fc_host_port_type(lport->host) = |
| FC_PORTTYPE_UNKNOWN; |
| per_cpu_ptr(lport->stats, |
| get_cpu())->LinkFailureCount++; |
| put_cpu(); |
| fcoe_clean_pending_queue(lport); |
| wait_for_upload = 1; |
| }; |
| } |
| } |
| mutex_unlock(&bnx2fc_dev_lock); |
| |
| if (wait_for_upload) { |
| clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); |
| init_waitqueue_head(&hba->shutdown_wait); |
| BNX2FC_MISC_DBG("indicate_netevent " |
| "num_ofld_sess = %d\n", |
| hba->num_ofld_sess); |
| hba->wait_for_link_down = 1; |
| wait_event_interruptible(hba->shutdown_wait, |
| (hba->num_ofld_sess == 0)); |
| BNX2FC_MISC_DBG("wakeup - num_ofld_sess = %d\n", |
| hba->num_ofld_sess); |
| hba->wait_for_link_down = 0; |
| |
| if (signal_pending(current)) |
| flush_signals(current); |
| } |
| } |
| |
| static int bnx2fc_libfc_config(struct fc_lport *lport) |
| { |
| |
| /* Set the function pointers set by bnx2fc driver */ |
| memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, |
| sizeof(struct libfc_function_template)); |
| fc_elsct_init(lport); |
| fc_exch_init(lport); |
| fc_disc_init(lport); |
| fc_disc_config(lport, lport); |
| return 0; |
| } |
| |
| static int bnx2fc_em_config(struct fc_lport *lport, struct bnx2fc_hba *hba) |
| { |
| int fcoe_min_xid, fcoe_max_xid; |
| |
| fcoe_min_xid = hba->max_xid + 1; |
| if (nr_cpu_ids <= 2) |
| fcoe_max_xid = hba->max_xid + FCOE_XIDS_PER_CPU_OFFSET; |
| else |
| fcoe_max_xid = hba->max_xid + FCOE_MAX_XID_OFFSET; |
| if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, fcoe_min_xid, |
| fcoe_max_xid, NULL)) { |
| printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static int bnx2fc_lport_config(struct fc_lport *lport) |
| { |
| lport->link_up = 0; |
| lport->qfull = 0; |
| lport->max_retry_count = BNX2FC_MAX_RETRY_CNT; |
| lport->max_rport_retry_count = BNX2FC_MAX_RPORT_RETRY_CNT; |
| lport->e_d_tov = 2 * 1000; |
| lport->r_a_tov = 10 * 1000; |
| |
| lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
| FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); |
| lport->does_npiv = 1; |
| |
| memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); |
| lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; |
| |
| /* alloc stats structure */ |
| if (fc_lport_init_stats(lport)) |
| return -ENOMEM; |
| |
| /* Finish fc_lport configuration */ |
| fc_lport_config(lport); |
| |
| return 0; |
| } |
| |
| /** |
| * bnx2fc_fip_recv - handle a received FIP frame. |
| * |
| * @skb: the received skb |
| * @dev: associated &net_device |
| * @ptype: the &packet_type structure which was used to register this handler. |
| * @orig_dev: original receive &net_device, in case @ dev is a bond. |
| * |
| * Returns: 0 for success |
| */ |
| static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, |
| struct packet_type *ptype, |
| struct net_device *orig_dev) |
| { |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| interface = container_of(ptype, struct bnx2fc_interface, |
| fip_packet_type); |
| ctlr = bnx2fc_to_ctlr(interface); |
| fcoe_ctlr_recv(ctlr, skb); |
| return 0; |
| } |
| |
| /** |
| * bnx2fc_update_src_mac - Update Ethernet MAC filters. |
| * |
| * @fip: FCoE controller. |
| * @old: Unicast MAC address to delete if the MAC is non-zero. |
| * @new: Unicast MAC address to add. |
| * |
| * Remove any previously-set unicast MAC filter. |
| * Add secondary FCoE MAC address filter for our OUI. |
| */ |
| static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) |
| { |
| struct fcoe_port *port = lport_priv(lport); |
| |
| memcpy(port->data_src_addr, addr, ETH_ALEN); |
| } |
| |
| /** |
| * bnx2fc_get_src_mac - return the ethernet source address for an lport |
| * |
| * @lport: libfc port |
| */ |
| static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) |
| { |
| struct fcoe_port *port; |
| |
| port = (struct fcoe_port *)lport_priv(lport); |
| return port->data_src_addr; |
| } |
| |
| /** |
| * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. |
| * |
| * @fip: FCoE controller. |
| * @skb: FIP Packet. |
| */ |
| static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) |
| { |
| struct fip_header *fiph; |
| struct ethhdr *eth_hdr; |
| u16 op; |
| u8 sub; |
| |
| fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); |
| eth_hdr = (struct ethhdr *)skb_mac_header(skb); |
| op = ntohs(fiph->fip_op); |
| sub = fiph->fip_subcode; |
| |
| if (op == FIP_OP_CTRL && sub == FIP_SC_SOL && bnx2fc_log_fka) |
| BNX2FC_MISC_DBG("Sending FKA from %pM to %pM.\n", |
| eth_hdr->h_source, eth_hdr->h_dest); |
| |
| skb->dev = bnx2fc_from_ctlr(fip)->netdev; |
| dev_queue_xmit(skb); |
| } |
| |
| static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) |
| { |
| struct Scsi_Host *shost = vport_to_shost(vport); |
| struct fc_lport *n_port = shost_priv(shost); |
| struct fcoe_port *port = lport_priv(n_port); |
| struct bnx2fc_interface *interface = port->priv; |
| struct net_device *netdev = interface->netdev; |
| struct fc_lport *vn_port; |
| int rc; |
| char buf[32]; |
| |
| rc = fcoe_validate_vport_create(vport); |
| if (rc) { |
| fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); |
| printk(KERN_ERR PFX "Failed to create vport, " |
| "WWPN (0x%s) already exists\n", |
| buf); |
| return rc; |
| } |
| |
| if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { |
| printk(KERN_ERR PFX "vn ports cannot be created on" |
| "this interface\n"); |
| return -EIO; |
| } |
| rtnl_lock(); |
| mutex_lock(&bnx2fc_dev_lock); |
| vn_port = bnx2fc_if_create(interface, &vport->dev, 1); |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| |
| if (!vn_port) { |
| printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", |
| netdev->name); |
| return -EIO; |
| } |
| |
| if (bnx2fc_devloss_tmo) |
| fc_host_dev_loss_tmo(vn_port->host) = bnx2fc_devloss_tmo; |
| |
| if (disabled) { |
| fc_vport_set_state(vport, FC_VPORT_DISABLED); |
| } else { |
| vn_port->boot_time = jiffies; |
| fc_lport_init(vn_port); |
| fc_fabric_login(vn_port); |
| fc_vport_setlink(vn_port); |
| } |
| return 0; |
| } |
| |
| static void bnx2fc_free_vport(struct bnx2fc_hba *hba, struct fc_lport *lport) |
| { |
| struct bnx2fc_lport *blport, *tmp; |
| |
| spin_lock_bh(&hba->hba_lock); |
| list_for_each_entry_safe(blport, tmp, &hba->vports, list) { |
| if (blport->lport == lport) { |
| list_del(&blport->list); |
| kfree(blport); |
| } |
| } |
| spin_unlock_bh(&hba->hba_lock); |
| } |
| |
| static int bnx2fc_vport_destroy(struct fc_vport *vport) |
| { |
| struct Scsi_Host *shost = vport_to_shost(vport); |
| struct fc_lport *n_port = shost_priv(shost); |
| struct fc_lport *vn_port = vport->dd_data; |
| struct fcoe_port *port = lport_priv(vn_port); |
| struct bnx2fc_interface *interface = port->priv; |
| struct fc_lport *v_port; |
| bool found = false; |
| |
| mutex_lock(&n_port->lp_mutex); |
| list_for_each_entry(v_port, &n_port->vports, list) |
| if (v_port->vport == vport) { |
| found = true; |
| break; |
| } |
| |
| if (!found) { |
| mutex_unlock(&n_port->lp_mutex); |
| return -ENOENT; |
| } |
| list_del(&vn_port->list); |
| mutex_unlock(&n_port->lp_mutex); |
| bnx2fc_free_vport(interface->hba, port->lport); |
| bnx2fc_port_shutdown(port->lport); |
| bnx2fc_interface_put(interface); |
| queue_work(bnx2fc_wq, &port->destroy_work); |
| return 0; |
| } |
| |
| static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) |
| { |
| struct fc_lport *lport = vport->dd_data; |
| |
| if (disable) { |
| fc_vport_set_state(vport, FC_VPORT_DISABLED); |
| fc_fabric_logoff(lport); |
| } else { |
| lport->boot_time = jiffies; |
| fc_fabric_login(lport); |
| fc_vport_setlink(lport); |
| } |
| return 0; |
| } |
| |
| |
| static int bnx2fc_interface_setup(struct bnx2fc_interface *interface) |
| { |
| struct net_device *netdev = interface->netdev; |
| struct net_device *physdev = interface->hba->phys_dev; |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct netdev_hw_addr *ha; |
| int sel_san_mac = 0; |
| |
| /* setup Source MAC Address */ |
| rcu_read_lock(); |
| for_each_dev_addr(physdev, ha) { |
| BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", |
| ha->type); |
| printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], |
| ha->addr[1], ha->addr[2], ha->addr[3], |
| ha->addr[4], ha->addr[5]); |
| |
| if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
| (is_valid_ether_addr(ha->addr))) { |
| memcpy(ctlr->ctl_src_addr, ha->addr, |
| ETH_ALEN); |
| sel_san_mac = 1; |
| BNX2FC_MISC_DBG("Found SAN MAC\n"); |
| } |
| } |
| rcu_read_unlock(); |
| |
| if (!sel_san_mac) |
| return -ENODEV; |
| |
| interface->fip_packet_type.func = bnx2fc_fip_recv; |
| interface->fip_packet_type.type = htons(ETH_P_FIP); |
| interface->fip_packet_type.dev = netdev; |
| dev_add_pack(&interface->fip_packet_type); |
| |
| interface->fcoe_packet_type.func = bnx2fc_rcv; |
| interface->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); |
| interface->fcoe_packet_type.dev = netdev; |
| dev_add_pack(&interface->fcoe_packet_type); |
| |
| return 0; |
| } |
| |
| static int bnx2fc_attach_transport(void) |
| { |
| bnx2fc_transport_template = |
| fc_attach_transport(&bnx2fc_transport_function); |
| |
| if (bnx2fc_transport_template == NULL) { |
| printk(KERN_ERR PFX "Failed to attach FC transport\n"); |
| return -ENODEV; |
| } |
| |
| bnx2fc_vport_xport_template = |
| fc_attach_transport(&bnx2fc_vport_xport_function); |
| if (bnx2fc_vport_xport_template == NULL) { |
| printk(KERN_ERR PFX |
| "Failed to attach FC transport for vport\n"); |
| fc_release_transport(bnx2fc_transport_template); |
| bnx2fc_transport_template = NULL; |
| return -ENODEV; |
| } |
| return 0; |
| } |
| static void bnx2fc_release_transport(void) |
| { |
| fc_release_transport(bnx2fc_transport_template); |
| fc_release_transport(bnx2fc_vport_xport_template); |
| bnx2fc_transport_template = NULL; |
| bnx2fc_vport_xport_template = NULL; |
| } |
| |
| static void bnx2fc_interface_release(struct kref *kref) |
| { |
| struct fcoe_ctlr_device *ctlr_dev; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| struct net_device *netdev; |
| |
| interface = container_of(kref, struct bnx2fc_interface, kref); |
| BNX2FC_MISC_DBG("Interface is being released\n"); |
| |
| ctlr = bnx2fc_to_ctlr(interface); |
| ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); |
| netdev = interface->netdev; |
| |
| /* tear-down FIP controller */ |
| if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags)) |
| fcoe_ctlr_destroy(ctlr); |
| |
| fcoe_ctlr_device_delete(ctlr_dev); |
| |
| dev_put(netdev); |
| module_put(THIS_MODULE); |
| } |
| |
| static inline void bnx2fc_interface_get(struct bnx2fc_interface *interface) |
| { |
| kref_get(&interface->kref); |
| } |
| |
| static inline void bnx2fc_interface_put(struct bnx2fc_interface *interface) |
| { |
| kref_put(&interface->kref, bnx2fc_interface_release); |
| } |
| static void bnx2fc_hba_destroy(struct bnx2fc_hba *hba) |
| { |
| /* Free the command manager */ |
| if (hba->cmd_mgr) { |
| bnx2fc_cmd_mgr_free(hba->cmd_mgr); |
| hba->cmd_mgr = NULL; |
| } |
| kfree(hba->tgt_ofld_list); |
| bnx2fc_unbind_pcidev(hba); |
| kfree(hba); |
| } |
| |
| /** |
| * bnx2fc_hba_create - create a new bnx2fc hba |
| * |
| * @cnic: pointer to cnic device |
| * |
| * Creates a new FCoE hba on the given device. |
| * |
| */ |
| static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) |
| { |
| struct bnx2fc_hba *hba; |
| struct fcoe_capabilities *fcoe_cap; |
| int rc; |
| |
| hba = kzalloc(sizeof(*hba), GFP_KERNEL); |
| if (!hba) { |
| printk(KERN_ERR PFX "Unable to allocate hba structure\n"); |
| return NULL; |
| } |
| spin_lock_init(&hba->hba_lock); |
| mutex_init(&hba->hba_mutex); |
| |
| hba->cnic = cnic; |
| |
| hba->max_tasks = cnic->max_fcoe_exchanges; |
| hba->elstm_xids = (hba->max_tasks / 2); |
| hba->max_outstanding_cmds = hba->elstm_xids; |
| hba->max_xid = (hba->max_tasks - 1); |
| |
| rc = bnx2fc_bind_pcidev(hba); |
| if (rc) { |
| printk(KERN_ERR PFX "create_adapter: bind error\n"); |
| goto bind_err; |
| } |
| hba->phys_dev = cnic->netdev; |
| hba->next_conn_id = 0; |
| |
| hba->tgt_ofld_list = |
| kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, |
| GFP_KERNEL); |
| if (!hba->tgt_ofld_list) { |
| printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); |
| goto tgtofld_err; |
| } |
| |
| hba->num_ofld_sess = 0; |
| |
| hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba); |
| if (!hba->cmd_mgr) { |
| printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); |
| goto cmgr_err; |
| } |
| fcoe_cap = &hba->fcoe_cap; |
| |
| fcoe_cap->capability1 = BNX2FC_TM_MAX_SQES << |
| FCOE_IOS_PER_CONNECTION_SHIFT; |
| fcoe_cap->capability1 |= BNX2FC_NUM_MAX_SESS << |
| FCOE_LOGINS_PER_PORT_SHIFT; |
| fcoe_cap->capability2 = hba->max_outstanding_cmds << |
| FCOE_NUMBER_OF_EXCHANGES_SHIFT; |
| fcoe_cap->capability2 |= BNX2FC_MAX_NPIV << |
| FCOE_NPIV_WWN_PER_PORT_SHIFT; |
| fcoe_cap->capability3 = BNX2FC_NUM_MAX_SESS << |
| FCOE_TARGETS_SUPPORTED_SHIFT; |
| fcoe_cap->capability3 |= hba->max_outstanding_cmds << |
| FCOE_OUTSTANDING_COMMANDS_SHIFT; |
| fcoe_cap->capability4 = FCOE_CAPABILITY4_STATEFUL; |
| |
| init_waitqueue_head(&hba->shutdown_wait); |
| init_waitqueue_head(&hba->destroy_wait); |
| INIT_LIST_HEAD(&hba->vports); |
| |
| return hba; |
| |
| cmgr_err: |
| kfree(hba->tgt_ofld_list); |
| tgtofld_err: |
| bnx2fc_unbind_pcidev(hba); |
| bind_err: |
| kfree(hba); |
| return NULL; |
| } |
| |
| static struct bnx2fc_interface * |
| bnx2fc_interface_create(struct bnx2fc_hba *hba, |
| struct net_device *netdev, |
| enum fip_state fip_mode) |
| { |
| struct fcoe_ctlr_device *ctlr_dev; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| int size; |
| int rc = 0; |
| |
| size = (sizeof(*interface) + sizeof(struct fcoe_ctlr)); |
| ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &bnx2fc_fcoe_sysfs_templ, |
| size); |
| if (!ctlr_dev) { |
| printk(KERN_ERR PFX "Unable to allocate interface structure\n"); |
| return NULL; |
| } |
| ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
| ctlr->cdev = ctlr_dev; |
| interface = fcoe_ctlr_priv(ctlr); |
| dev_hold(netdev); |
| kref_init(&interface->kref); |
| interface->hba = hba; |
| interface->netdev = netdev; |
| |
| /* Initialize FIP */ |
| fcoe_ctlr_init(ctlr, fip_mode); |
| ctlr->send = bnx2fc_fip_send; |
| ctlr->update_mac = bnx2fc_update_src_mac; |
| ctlr->get_src_addr = bnx2fc_get_src_mac; |
| set_bit(BNX2FC_CTLR_INIT_DONE, &interface->if_flags); |
| |
| rc = bnx2fc_interface_setup(interface); |
| if (!rc) |
| return interface; |
| |
| fcoe_ctlr_destroy(ctlr); |
| dev_put(netdev); |
| fcoe_ctlr_device_delete(ctlr_dev); |
| return NULL; |
| } |
| |
| /** |
| * bnx2fc_if_create - Create FCoE instance on a given interface |
| * |
| * @interface: FCoE interface to create a local port on |
| * @parent: Device pointer to be the parent in sysfs for the SCSI host |
| * @npiv: Indicates if the port is vport or not |
| * |
| * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
| * |
| * Returns: Allocated fc_lport or an error pointer |
| */ |
| static struct fc_lport *bnx2fc_if_create(struct bnx2fc_interface *interface, |
| struct device *parent, int npiv) |
| { |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct fc_lport *lport, *n_port; |
| struct fcoe_port *port; |
| struct Scsi_Host *shost; |
| struct fc_vport *vport = dev_to_vport(parent); |
| struct bnx2fc_lport *blport; |
| struct bnx2fc_hba *hba = interface->hba; |
| int rc = 0; |
| |
| blport = kzalloc(sizeof(struct bnx2fc_lport), GFP_KERNEL); |
| if (!blport) { |
| BNX2FC_HBA_DBG(ctlr->lp, "Unable to alloc blport\n"); |
| return NULL; |
| } |
| |
| /* Allocate Scsi_Host structure */ |
| bnx2fc_shost_template.can_queue = hba->max_outstanding_cmds; |
| if (!npiv) |
| lport = libfc_host_alloc(&bnx2fc_shost_template, sizeof(*port)); |
| else |
| lport = libfc_vport_create(vport, sizeof(*port)); |
| |
| if (!lport) { |
| printk(KERN_ERR PFX "could not allocate scsi host structure\n"); |
| goto free_blport; |
| } |
| shost = lport->host; |
| port = lport_priv(lport); |
| port->lport = lport; |
| port->priv = interface; |
| port->get_netdev = bnx2fc_netdev; |
| INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); |
| |
| /* Configure fcoe_port */ |
| rc = bnx2fc_lport_config(lport); |
| if (rc) |
| goto lp_config_err; |
| |
| if (npiv) { |
| printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", |
| vport->node_name, vport->port_name); |
| fc_set_wwnn(lport, vport->node_name); |
| fc_set_wwpn(lport, vport->port_name); |
| } |
| /* Configure netdev and networking properties of the lport */ |
| rc = bnx2fc_net_config(lport, interface->netdev); |
| if (rc) { |
| printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); |
| goto lp_config_err; |
| } |
| |
| rc = bnx2fc_shost_config(lport, parent); |
| if (rc) { |
| printk(KERN_ERR PFX "Couldnt configure shost for %s\n", |
| interface->netdev->name); |
| goto lp_config_err; |
| } |
| |
| /* Initialize the libfc library */ |
| rc = bnx2fc_libfc_config(lport); |
| if (rc) { |
| printk(KERN_ERR PFX "Couldnt configure libfc\n"); |
| goto shost_err; |
| } |
| fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; |
| |
| if (bnx2fc_devloss_tmo) |
| fc_host_dev_loss_tmo(shost) = bnx2fc_devloss_tmo; |
| |
| /* Allocate exchange manager */ |
| if (!npiv) |
| rc = bnx2fc_em_config(lport, hba); |
| else { |
| shost = vport_to_shost(vport); |
| n_port = shost_priv(shost); |
| rc = fc_exch_mgr_list_clone(n_port, lport); |
| } |
| |
| if (rc) { |
| printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); |
| goto shost_err; |
| } |
| |
| bnx2fc_interface_get(interface); |
| |
| spin_lock_bh(&hba->hba_lock); |
| blport->lport = lport; |
| list_add_tail(&blport->list, &hba->vports); |
| spin_unlock_bh(&hba->hba_lock); |
| |
| return lport; |
| |
| shost_err: |
| scsi_remove_host(shost); |
| lp_config_err: |
| scsi_host_put(lport->host); |
| free_blport: |
| kfree(blport); |
| return NULL; |
| } |
| |
| static void bnx2fc_net_cleanup(struct bnx2fc_interface *interface) |
| { |
| /* Dont listen for Ethernet packets anymore */ |
| __dev_remove_pack(&interface->fcoe_packet_type); |
| __dev_remove_pack(&interface->fip_packet_type); |
| synchronize_net(); |
| } |
| |
| static void bnx2fc_interface_cleanup(struct bnx2fc_interface *interface) |
| { |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct fc_lport *lport = ctlr->lp; |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_hba *hba = interface->hba; |
| |
| /* Stop the transmit retry timer */ |
| del_timer_sync(&port->timer); |
| |
| /* Free existing transmit skbs */ |
| fcoe_clean_pending_queue(lport); |
| |
| bnx2fc_net_cleanup(interface); |
| |
| bnx2fc_free_vport(hba, lport); |
| } |
| |
| static void bnx2fc_if_destroy(struct fc_lport *lport) |
| { |
| |
| /* Free queued packets for the receive thread */ |
| bnx2fc_clean_rx_queue(lport); |
| |
| /* Detach from scsi-ml */ |
| fc_remove_host(lport->host); |
| scsi_remove_host(lport->host); |
| |
| /* |
| * Note that only the physical lport will have the exchange manager. |
| * for vports, this function is NOP |
| */ |
| fc_exch_mgr_free(lport); |
| |
| /* Free memory used by statistical counters */ |
| fc_lport_free_stats(lport); |
| |
| /* Release Scsi_Host */ |
| scsi_host_put(lport->host); |
| } |
| |
| static void __bnx2fc_destroy(struct bnx2fc_interface *interface) |
| { |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct fc_lport *lport = ctlr->lp; |
| struct fcoe_port *port = lport_priv(lport); |
| |
| bnx2fc_interface_cleanup(interface); |
| bnx2fc_stop(interface); |
| list_del(&interface->list); |
| bnx2fc_interface_put(interface); |
| queue_work(bnx2fc_wq, &port->destroy_work); |
| } |
| |
| /** |
| * bnx2fc_destroy - Destroy a bnx2fc FCoE interface |
| * |
| * @buffer: The name of the Ethernet interface to be destroyed |
| * @kp: The associated kernel parameter |
| * |
| * Called from sysfs. |
| * |
| * Returns: 0 for success |
| */ |
| static int bnx2fc_destroy(struct net_device *netdev) |
| { |
| struct bnx2fc_interface *interface = NULL; |
| struct workqueue_struct *timer_work_queue; |
| struct fcoe_ctlr *ctlr; |
| int rc = 0; |
| |
| rtnl_lock(); |
| mutex_lock(&bnx2fc_dev_lock); |
| |
| interface = bnx2fc_interface_lookup(netdev); |
| ctlr = bnx2fc_to_ctlr(interface); |
| if (!interface || !ctlr->lp) { |
| rc = -ENODEV; |
| printk(KERN_ERR PFX "bnx2fc_destroy: interface or lport not found\n"); |
| goto netdev_err; |
| } |
| |
| timer_work_queue = interface->timer_work_queue; |
| __bnx2fc_destroy(interface); |
| destroy_workqueue(timer_work_queue); |
| |
| netdev_err: |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| return rc; |
| } |
| |
| static void bnx2fc_destroy_work(struct work_struct *work) |
| { |
| struct fcoe_port *port; |
| struct fc_lport *lport; |
| |
| port = container_of(work, struct fcoe_port, destroy_work); |
| lport = port->lport; |
| |
| BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); |
| |
| bnx2fc_if_destroy(lport); |
| } |
| |
| static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) |
| { |
| bnx2fc_free_fw_resc(hba); |
| bnx2fc_free_task_ctx(hba); |
| } |
| |
| /** |
| * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated |
| * pci structure |
| * |
| * @hba: Adapter instance |
| */ |
| static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) |
| { |
| if (bnx2fc_setup_task_ctx(hba)) |
| goto mem_err; |
| |
| if (bnx2fc_setup_fw_resc(hba)) |
| goto mem_err; |
| |
| return 0; |
| mem_err: |
| bnx2fc_unbind_adapter_devices(hba); |
| return -ENOMEM; |
| } |
| |
| static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) |
| { |
| struct cnic_dev *cnic; |
| struct pci_dev *pdev; |
| |
| if (!hba->cnic) { |
| printk(KERN_ERR PFX "cnic is NULL\n"); |
| return -ENODEV; |
| } |
| cnic = hba->cnic; |
| pdev = hba->pcidev = cnic->pcidev; |
| if (!hba->pcidev) |
| return -ENODEV; |
| |
| switch (pdev->device) { |
| case PCI_DEVICE_ID_NX2_57710: |
| strncpy(hba->chip_num, "BCM57710", BCM_CHIP_LEN); |
| break; |
| case PCI_DEVICE_ID_NX2_57711: |
| strncpy(hba->chip_num, "BCM57711", BCM_CHIP_LEN); |
| break; |
| case PCI_DEVICE_ID_NX2_57712: |
| case PCI_DEVICE_ID_NX2_57712_MF: |
| case PCI_DEVICE_ID_NX2_57712_VF: |
| strncpy(hba->chip_num, "BCM57712", BCM_CHIP_LEN); |
| break; |
| case PCI_DEVICE_ID_NX2_57800: |
| case PCI_DEVICE_ID_NX2_57800_MF: |
| case PCI_DEVICE_ID_NX2_57800_VF: |
| strncpy(hba->chip_num, "BCM57800", BCM_CHIP_LEN); |
| break; |
| case PCI_DEVICE_ID_NX2_57810: |
| case PCI_DEVICE_ID_NX2_57810_MF: |
| case PCI_DEVICE_ID_NX2_57810_VF: |
| strncpy(hba->chip_num, "BCM57810", BCM_CHIP_LEN); |
| break; |
| case PCI_DEVICE_ID_NX2_57840: |
| case PCI_DEVICE_ID_NX2_57840_MF: |
| case PCI_DEVICE_ID_NX2_57840_VF: |
| case PCI_DEVICE_ID_NX2_57840_2_20: |
| case PCI_DEVICE_ID_NX2_57840_4_10: |
| strncpy(hba->chip_num, "BCM57840", BCM_CHIP_LEN); |
| break; |
| default: |
| pr_err(PFX "Unknown device id 0x%x\n", pdev->device); |
| break; |
| } |
| pci_dev_get(hba->pcidev); |
| return 0; |
| } |
| |
| static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) |
| { |
| if (hba->pcidev) { |
| hba->chip_num[0] = '\0'; |
| pci_dev_put(hba->pcidev); |
| } |
| hba->pcidev = NULL; |
| } |
| |
| /** |
| * bnx2fc_ulp_get_stats - cnic callback to populate FCoE stats |
| * |
| * @handle: transport handle pointing to adapter struture |
| */ |
| static int bnx2fc_ulp_get_stats(void *handle) |
| { |
| struct bnx2fc_hba *hba = handle; |
| struct cnic_dev *cnic; |
| struct fcoe_stats_info *stats_addr; |
| |
| if (!hba) |
| return -EINVAL; |
| |
| cnic = hba->cnic; |
| stats_addr = &cnic->stats_addr->fcoe_stat; |
| if (!stats_addr) |
| return -EINVAL; |
| |
| strncpy(stats_addr->version, BNX2FC_VERSION, |
| sizeof(stats_addr->version)); |
| stats_addr->txq_size = BNX2FC_SQ_WQES_MAX; |
| stats_addr->rxq_size = BNX2FC_CQ_WQES_MAX; |
| |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance |
| * |
| * @handle: transport handle pointing to adapter structure |
| * |
| * This function maps adapter structure to pcidev structure and initiates |
| * firmware handshake to enable/initialize on-chip FCoE components. |
| * This bnx2fc - cnic interface api callback is used after following |
| * conditions are met - |
| * a) underlying network interface is up (marked by event NETDEV_UP |
| * from netdev |
| * b) bnx2fc adatper structure is registered. |
| */ |
| static void bnx2fc_ulp_start(void *handle) |
| { |
| struct bnx2fc_hba *hba = handle; |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| struct fc_lport *lport; |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| |
| if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) |
| bnx2fc_fw_init(hba); |
| |
| BNX2FC_MISC_DBG("bnx2fc started.\n"); |
| |
| list_for_each_entry(interface, &if_list, list) { |
| if (interface->hba == hba) { |
| ctlr = bnx2fc_to_ctlr(interface); |
| lport = ctlr->lp; |
| /* Kick off Fabric discovery*/ |
| printk(KERN_ERR PFX "ulp_init: start discovery\n"); |
| lport->tt.frame_send = bnx2fc_xmit; |
| bnx2fc_start_disc(interface); |
| } |
| } |
| |
| mutex_unlock(&bnx2fc_dev_lock); |
| } |
| |
| static void bnx2fc_port_shutdown(struct fc_lport *lport) |
| { |
| BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| fc_fabric_logoff(lport); |
| fc_lport_destroy(lport); |
| } |
| |
| static void bnx2fc_stop(struct bnx2fc_interface *interface) |
| { |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct fc_lport *lport; |
| struct fc_lport *vport; |
| |
| if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) |
| return; |
| |
| lport = ctlr->lp; |
| bnx2fc_port_shutdown(lport); |
| |
| mutex_lock(&lport->lp_mutex); |
| list_for_each_entry(vport, &lport->vports, list) |
| fc_host_port_type(vport->host) = |
| FC_PORTTYPE_UNKNOWN; |
| mutex_unlock(&lport->lp_mutex); |
| fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; |
| fcoe_ctlr_link_down(ctlr); |
| fcoe_clean_pending_queue(lport); |
| } |
| |
| static int bnx2fc_fw_init(struct bnx2fc_hba *hba) |
| { |
| #define BNX2FC_INIT_POLL_TIME (1000 / HZ) |
| int rc = -1; |
| int i = HZ; |
| |
| rc = bnx2fc_bind_adapter_devices(hba); |
| if (rc) { |
| printk(KERN_ALERT PFX |
| "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); |
| goto err_out; |
| } |
| |
| rc = bnx2fc_send_fw_fcoe_init_msg(hba); |
| if (rc) { |
| printk(KERN_ALERT PFX |
| "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); |
| goto err_unbind; |
| } |
| |
| /* |
| * Wait until the adapter init message is complete, and adapter |
| * state is UP. |
| */ |
| while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) |
| msleep(BNX2FC_INIT_POLL_TIME); |
| |
| if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { |
| printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " |
| "Ignoring...\n", |
| hba->cnic->netdev->name); |
| rc = -1; |
| goto err_unbind; |
| } |
| |
| |
| set_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags); |
| return 0; |
| |
| err_unbind: |
| bnx2fc_unbind_adapter_devices(hba); |
| err_out: |
| return rc; |
| } |
| |
| static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) |
| { |
| if (test_and_clear_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) { |
| if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { |
| init_timer(&hba->destroy_timer); |
| hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + |
| jiffies; |
| hba->destroy_timer.function = bnx2fc_destroy_timer; |
| hba->destroy_timer.data = (unsigned long)hba; |
| add_timer(&hba->destroy_timer); |
| wait_event_interruptible(hba->destroy_wait, |
| test_bit(BNX2FC_FLAG_DESTROY_CMPL, |
| &hba->flags)); |
| clear_bit(BNX2FC_FLAG_DESTROY_CMPL, &hba->flags); |
| /* This should never happen */ |
| if (signal_pending(current)) |
| flush_signals(current); |
| |
| del_timer_sync(&hba->destroy_timer); |
| } |
| bnx2fc_unbind_adapter_devices(hba); |
| } |
| } |
| |
| /** |
| * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance |
| * |
| * @handle: transport handle pointing to adapter structure |
| * |
| * Driver checks if adapter is already in shutdown mode, if not start |
| * the shutdown process. |
| */ |
| static void bnx2fc_ulp_stop(void *handle) |
| { |
| struct bnx2fc_hba *hba = handle; |
| struct bnx2fc_interface *interface; |
| |
| printk(KERN_ERR "ULP_STOP\n"); |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &hba->flags)) |
| goto exit; |
| list_for_each_entry(interface, &if_list, list) { |
| if (interface->hba == hba) |
| bnx2fc_stop(interface); |
| } |
| BUG_ON(hba->num_ofld_sess != 0); |
| |
| mutex_lock(&hba->hba_mutex); |
| clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| clear_bit(ADAPTER_STATE_GOING_DOWN, |
| &hba->adapter_state); |
| |
| clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); |
| mutex_unlock(&hba->hba_mutex); |
| |
| bnx2fc_fw_destroy(hba); |
| exit: |
| mutex_unlock(&bnx2fc_dev_lock); |
| } |
| |
| static void bnx2fc_start_disc(struct bnx2fc_interface *interface) |
| { |
| struct fcoe_ctlr *ctlr = bnx2fc_to_ctlr(interface); |
| struct fc_lport *lport; |
| int wait_cnt = 0; |
| |
| BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| /* Kick off FIP/FLOGI */ |
| if (!test_bit(BNX2FC_FLAG_FW_INIT_DONE, &interface->hba->flags)) { |
| printk(KERN_ERR PFX "Init not done yet\n"); |
| return; |
| } |
| |
| lport = ctlr->lp; |
| BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); |
| |
| if (!bnx2fc_link_ok(lport) && interface->enabled) { |
| BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); |
| fcoe_ctlr_link_up(ctlr); |
| fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; |
| set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); |
| } |
| |
| /* wait for the FCF to be selected before issuing FLOGI */ |
| while (!ctlr->sel_fcf) { |
| msleep(250); |
| /* give up after 3 secs */ |
| if (++wait_cnt > 12) |
| break; |
| } |
| |
| /* Reset max receive frame size to default */ |
| if (fc_set_mfs(lport, BNX2FC_MFS)) |
| return; |
| |
| fc_lport_init(lport); |
| fc_fabric_login(lport); |
| } |
| |
| |
| /** |
| * bnx2fc_ulp_init - Initialize an adapter instance |
| * |
| * @dev : cnic device handle |
| * Called from cnic_register_driver() context to initialize all |
| * enumerated cnic devices. This routine allocates adapter structure |
| * and other device specific resources. |
| */ |
| static void bnx2fc_ulp_init(struct cnic_dev *dev) |
| { |
| struct bnx2fc_hba *hba; |
| int rc = 0; |
| |
| BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| /* bnx2fc works only when bnx2x is loaded */ |
| if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) || |
| (dev->max_fcoe_conn == 0)) { |
| printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," |
| " flags: %lx fcoe_conn: %d\n", |
| dev->netdev->name, dev->flags, dev->max_fcoe_conn); |
| return; |
| } |
| |
| hba = bnx2fc_hba_create(dev); |
| if (!hba) { |
| printk(KERN_ERR PFX "hba initialization failed\n"); |
| return; |
| } |
| |
| pr_info(PFX "FCoE initialized for %s.\n", dev->netdev->name); |
| |
| /* Add HBA to the adapter list */ |
| mutex_lock(&bnx2fc_dev_lock); |
| list_add_tail(&hba->list, &adapter_list); |
| adapter_count++; |
| mutex_unlock(&bnx2fc_dev_lock); |
| |
| dev->fcoe_cap = &hba->fcoe_cap; |
| clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); |
| rc = dev->register_device(dev, CNIC_ULP_FCOE, |
| (void *) hba); |
| if (rc) |
| printk(KERN_ERR PFX "register_device failed, rc = %d\n", rc); |
| else |
| set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); |
| } |
| |
| /* Assumes rtnl_lock and the bnx2fc_dev_lock are already taken */ |
| static int __bnx2fc_disable(struct fcoe_ctlr *ctlr) |
| { |
| struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); |
| |
| if (interface->enabled == true) { |
| if (!ctlr->lp) { |
| pr_err(PFX "__bnx2fc_disable: lport not found\n"); |
| return -ENODEV; |
| } else { |
| interface->enabled = false; |
| fcoe_ctlr_link_down(ctlr); |
| fcoe_clean_pending_queue(ctlr->lp); |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * Deperecated: Use bnx2fc_enabled() |
| */ |
| static int bnx2fc_disable(struct net_device *netdev) |
| { |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| int rc = 0; |
| |
| rtnl_lock(); |
| mutex_lock(&bnx2fc_dev_lock); |
| |
| interface = bnx2fc_interface_lookup(netdev); |
| ctlr = bnx2fc_to_ctlr(interface); |
| |
| if (!interface) { |
| rc = -ENODEV; |
| pr_err(PFX "bnx2fc_disable: interface not found\n"); |
| } else { |
| rc = __bnx2fc_disable(ctlr); |
| } |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| return rc; |
| } |
| |
| static uint bnx2fc_npiv_create_vports(struct fc_lport *lport, |
| struct cnic_fc_npiv_tbl *npiv_tbl) |
| { |
| struct fc_vport_identifiers vpid; |
| uint i, created = 0; |
| |
| if (npiv_tbl->count > MAX_NPIV_ENTRIES) { |
| BNX2FC_HBA_DBG(lport, "Exceeded count max of npiv table\n"); |
| goto done; |
| } |
| |
| /* Sanity check the first entry to make sure it's not 0 */ |
| if (wwn_to_u64(npiv_tbl->wwnn[0]) == 0 && |
| wwn_to_u64(npiv_tbl->wwpn[0]) == 0) { |
| BNX2FC_HBA_DBG(lport, "First NPIV table entries invalid.\n"); |
| goto done; |
| } |
| |
| vpid.roles = FC_PORT_ROLE_FCP_INITIATOR; |
| vpid.vport_type = FC_PORTTYPE_NPIV; |
| vpid.disable = false; |
| |
| for (i = 0; i < npiv_tbl->count; i++) { |
| vpid.node_name = wwn_to_u64(npiv_tbl->wwnn[i]); |
| vpid.port_name = wwn_to_u64(npiv_tbl->wwpn[i]); |
| scnprintf(vpid.symbolic_name, sizeof(vpid.symbolic_name), |
| "NPIV[%u]:%016llx-%016llx", |
| created, vpid.port_name, vpid.node_name); |
| if (fc_vport_create(lport->host, 0, &vpid)) |
| created++; |
| else |
| BNX2FC_HBA_DBG(lport, "Failed to create vport\n"); |
| } |
| done: |
| return created; |
| } |
| |
| static int __bnx2fc_enable(struct fcoe_ctlr *ctlr) |
| { |
| struct bnx2fc_interface *interface = fcoe_ctlr_priv(ctlr); |
| struct bnx2fc_hba *hba; |
| struct cnic_fc_npiv_tbl *npiv_tbl; |
| struct fc_lport *lport; |
| |
| if (interface->enabled == false) { |
| if (!ctlr->lp) { |
| pr_err(PFX "__bnx2fc_enable: lport not found\n"); |
| return -ENODEV; |
| } else if (!bnx2fc_link_ok(ctlr->lp)) { |
| fcoe_ctlr_link_up(ctlr); |
| interface->enabled = true; |
| } |
| } |
| |
| /* Create static NPIV ports if any are contained in NVRAM */ |
| hba = interface->hba; |
| lport = ctlr->lp; |
| |
| if (!hba) |
| goto done; |
| |
| if (!hba->cnic) |
| goto done; |
| |
| if (!lport) |
| goto done; |
| |
| if (!lport->host) |
| goto done; |
| |
| if (!hba->cnic->get_fc_npiv_tbl) |
| goto done; |
| |
| npiv_tbl = kzalloc(sizeof(struct cnic_fc_npiv_tbl), GFP_KERNEL); |
| if (!npiv_tbl) |
| goto done; |
| |
| if (hba->cnic->get_fc_npiv_tbl(hba->cnic, npiv_tbl)) |
| goto done_free; |
| |
| bnx2fc_npiv_create_vports(lport, npiv_tbl); |
| done_free: |
| kfree(npiv_tbl); |
| done: |
| return 0; |
| } |
| |
| /** |
| * Deprecated: Use bnx2fc_enabled() |
| */ |
| static int bnx2fc_enable(struct net_device *netdev) |
| { |
| struct bnx2fc_interface *interface; |
| struct fcoe_ctlr *ctlr; |
| int rc = 0; |
| |
| rtnl_lock(); |
| mutex_lock(&bnx2fc_dev_lock); |
| |
| interface = bnx2fc_interface_lookup(netdev); |
| ctlr = bnx2fc_to_ctlr(interface); |
| if (!interface) { |
| rc = -ENODEV; |
| pr_err(PFX "bnx2fc_enable: interface not found\n"); |
| } else { |
| rc = __bnx2fc_enable(ctlr); |
| } |
| |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| return rc; |
| } |
| |
| /** |
| * bnx2fc_ctlr_enabled() - Enable or disable an FCoE Controller |
| * @cdev: The FCoE Controller that is being enabled or disabled |
| * |
| * fcoe_sysfs will ensure that the state of 'enabled' has |
| * changed, so no checking is necessary here. This routine simply |
| * calls fcoe_enable or fcoe_disable, both of which are deprecated. |
| * When those routines are removed the functionality can be merged |
| * here. |
| */ |
| static int bnx2fc_ctlr_enabled(struct fcoe_ctlr_device *cdev) |
| { |
| struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); |
| |
| switch (cdev->enabled) { |
| case FCOE_CTLR_ENABLED: |
| return __bnx2fc_enable(ctlr); |
| case FCOE_CTLR_DISABLED: |
| return __bnx2fc_disable(ctlr); |
| case FCOE_CTLR_UNUSED: |
| default: |
| return -ENOTSUPP; |
| }; |
| } |
| |
| enum bnx2fc_create_link_state { |
| BNX2FC_CREATE_LINK_DOWN, |
| BNX2FC_CREATE_LINK_UP, |
| }; |
| |
| /** |
| * _bnx2fc_create() - Create bnx2fc FCoE interface |
| * @netdev : The net_device object the Ethernet interface to create on |
| * @fip_mode: The FIP mode for this creation |
| * @link_state: The ctlr link state on creation |
| * |
| * Called from either the libfcoe 'create' module parameter |
| * via fcoe_create or from fcoe_syfs's ctlr_create file. |
| * |
| * libfcoe's 'create' module parameter is deprecated so some |
| * consolidation of code can be done when that interface is |
| * removed. |
| * |
| * Returns: 0 for success |
| */ |
| static int _bnx2fc_create(struct net_device *netdev, |
| enum fip_mode fip_mode, |
| enum bnx2fc_create_link_state link_state) |
| { |
| struct fcoe_ctlr_device *cdev; |
| struct fcoe_ctlr *ctlr; |
| struct bnx2fc_interface *interface; |
| struct bnx2fc_hba *hba; |
| struct net_device *phys_dev = netdev; |
| struct fc_lport *lport; |
| struct ethtool_drvinfo drvinfo; |
| int rc = 0; |
| int vlan_id = 0; |
| |
| BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); |
| if (fip_mode != FIP_MODE_FABRIC) { |
| printk(KERN_ERR "fip mode not FABRIC\n"); |
| return -EIO; |
| } |
| |
| rtnl_lock(); |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| |
| if (!try_module_get(THIS_MODULE)) { |
| rc = -EINVAL; |
| goto mod_err; |
| } |
| |
| /* obtain physical netdev */ |
| if (netdev->priv_flags & IFF_802_1Q_VLAN) |
| phys_dev = vlan_dev_real_dev(netdev); |
| |
| /* verify if the physical device is a netxtreme2 device */ |
| if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { |
| memset(&drvinfo, 0, sizeof(drvinfo)); |
| phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); |
| if (strncmp(drvinfo.driver, "bnx2x", strlen("bnx2x"))) { |
| printk(KERN_ERR PFX "Not a netxtreme2 device\n"); |
| rc = -EINVAL; |
| goto netdev_err; |
| } |
| } else { |
| printk(KERN_ERR PFX "unable to obtain drv_info\n"); |
| rc = -EINVAL; |
| goto netdev_err; |
| } |
| |
| /* obtain interface and initialize rest of the structure */ |
| hba = bnx2fc_hba_lookup(phys_dev); |
| if (!hba) { |
| rc = -ENODEV; |
| printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); |
| goto netdev_err; |
| } |
| |
| if (bnx2fc_interface_lookup(netdev)) { |
| rc = -EEXIST; |
| goto netdev_err; |
| } |
| |
| interface = bnx2fc_interface_create(hba, netdev, fip_mode); |
| if (!interface) { |
| printk(KERN_ERR PFX "bnx2fc_interface_create failed\n"); |
| rc = -ENOMEM; |
| goto ifput_err; |
| } |
| |
| if (netdev->priv_flags & IFF_802_1Q_VLAN) { |
| vlan_id = vlan_dev_vlan_id(netdev); |
| interface->vlan_enabled = 1; |
| } |
| |
| ctlr = bnx2fc_to_ctlr(interface); |
| cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
| interface->vlan_id = vlan_id; |
| interface->tm_timeout = BNX2FC_TM_TIMEOUT; |
| |
| interface->timer_work_queue = |
| create_singlethread_workqueue("bnx2fc_timer_wq"); |
| if (!interface->timer_work_queue) { |
| printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); |
| rc = -EINVAL; |
| goto ifput_err; |
| } |
| |
| lport = bnx2fc_if_create(interface, &cdev->dev, 0); |
| if (!lport) { |
| printk(KERN_ERR PFX "Failed to create interface (%s)\n", |
| netdev->name); |
| rc = -EINVAL; |
| goto if_create_err; |
| } |
| |
| /* Add interface to if_list */ |
| list_add_tail(&interface->list, &if_list); |
| |
| lport->boot_time = jiffies; |
| |
| /* Make this master N_port */ |
| ctlr->lp = lport; |
| |
| if (link_state == BNX2FC_CREATE_LINK_UP) |
| cdev->enabled = FCOE_CTLR_ENABLED; |
| else |
| cdev->enabled = FCOE_CTLR_DISABLED; |
| |
| if (link_state == BNX2FC_CREATE_LINK_UP && |
| !bnx2fc_link_ok(lport)) { |
| fcoe_ctlr_link_up(ctlr); |
| fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; |
| set_bit(ADAPTER_STATE_READY, &interface->hba->adapter_state); |
| } |
| |
| BNX2FC_HBA_DBG(lport, "create: START DISC\n"); |
| bnx2fc_start_disc(interface); |
| |
| if (link_state == BNX2FC_CREATE_LINK_UP) |
| interface->enabled = true; |
| |
| /* |
| * Release from kref_init in bnx2fc_interface_setup, on success |
| * lport should be holding a reference taken in bnx2fc_if_create |
| */ |
| bnx2fc_interface_put(interface); |
| /* put netdev that was held while calling dev_get_by_name */ |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| return 0; |
| |
| if_create_err: |
| destroy_workqueue(interface->timer_work_queue); |
| ifput_err: |
| bnx2fc_net_cleanup(interface); |
| bnx2fc_interface_put(interface); |
| goto mod_err; |
| netdev_err: |
| module_put(THIS_MODULE); |
| mod_err: |
| mutex_unlock(&bnx2fc_dev_lock); |
| rtnl_unlock(); |
| return rc; |
| } |
| |
| /** |
| * bnx2fc_create() - Create a bnx2fc interface |
| * @netdev : The net_device object the Ethernet interface to create on |
| * @fip_mode: The FIP mode for this creation |
| * |
| * Called from fcoe transport |
| * |
| * Returns: 0 for success |
| */ |
| static int bnx2fc_create(struct net_device *netdev, enum fip_mode fip_mode) |
| { |
| return _bnx2fc_create(netdev, fip_mode, BNX2FC_CREATE_LINK_UP); |
| } |
| |
| /** |
| * bnx2fc_ctlr_alloc() - Allocate a bnx2fc interface from fcoe_sysfs |
| * @netdev: The net_device to be used by the allocated FCoE Controller |
| * |
| * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr |
| * in a link_down state. The allows the user an opportunity to configure |
| * the FCoE Controller from sysfs before enabling the FCoE Controller. |
| * |
| * Creating in with this routine starts the FCoE Controller in Fabric |
| * mode. The user can change to VN2VN or another mode before enabling. |
| */ |
| static int bnx2fc_ctlr_alloc(struct net_device *netdev) |
| { |
| return _bnx2fc_create(netdev, FIP_MODE_FABRIC, |
| BNX2FC_CREATE_LINK_DOWN); |
| } |
| |
| /** |
| * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc hba instance |
| * |
| * @cnic: Pointer to cnic device instance |
| * |
| **/ |
| static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) |
| { |
| struct bnx2fc_hba *hba; |
| |
| /* Called with bnx2fc_dev_lock held */ |
| list_for_each_entry(hba, &adapter_list, list) { |
| if (hba->cnic == cnic) |
| return hba; |
| } |
| return NULL; |
| } |
| |
| static struct bnx2fc_interface *bnx2fc_interface_lookup(struct net_device |
| *netdev) |
| { |
| struct bnx2fc_interface *interface; |
| |
| /* Called with bnx2fc_dev_lock held */ |
| list_for_each_entry(interface, &if_list, list) { |
| if (interface->netdev == netdev) |
| return interface; |
| } |
| return NULL; |
| } |
| |
| static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device |
| *phys_dev) |
| { |
| struct bnx2fc_hba *hba; |
| |
| /* Called with bnx2fc_dev_lock held */ |
| list_for_each_entry(hba, &adapter_list, list) { |
| if (hba->phys_dev == phys_dev) |
| return hba; |
| } |
| printk(KERN_ERR PFX "adapter_lookup: hba NULL\n"); |
| return NULL; |
| } |
| |
| /** |
| * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources |
| * |
| * @dev cnic device handle |
| */ |
| static void bnx2fc_ulp_exit(struct cnic_dev *dev) |
| { |
| struct bnx2fc_hba *hba; |
| struct bnx2fc_interface *interface, *tmp; |
| |
| BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); |
| |
| if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", |
| dev->netdev->name, dev->flags); |
| return; |
| } |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| hba = bnx2fc_find_hba_for_cnic(dev); |
| if (!hba) { |
| printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", |
| dev); |
| mutex_unlock(&bnx2fc_dev_lock); |
| return; |
| } |
| |
| list_del_init(&hba->list); |
| adapter_count--; |
| |
| list_for_each_entry_safe(interface, tmp, &if_list, list) |
| /* destroy not called yet, move to quiesced list */ |
| if (interface->hba == hba) |
| __bnx2fc_destroy(interface); |
| mutex_unlock(&bnx2fc_dev_lock); |
| |
| /* Ensure ALL destroy work has been completed before return */ |
| flush_workqueue(bnx2fc_wq); |
| |
| bnx2fc_ulp_stop(hba); |
| /* unregister cnic device */ |
| if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) |
| hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); |
| bnx2fc_hba_destroy(hba); |
| } |
| |
| /** |
| * bnx2fc_fcoe_reset - Resets the fcoe |
| * |
| * @shost: shost the reset is from |
| * |
| * Returns: always 0 |
| */ |
| static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) |
| { |
| struct fc_lport *lport = shost_priv(shost); |
| fc_lport_reset(lport); |
| return 0; |
| } |
| |
| |
| static bool bnx2fc_match(struct net_device *netdev) |
| { |
| struct net_device *phys_dev = netdev; |
| |
| mutex_lock(&bnx2fc_dev_lock); |
| if (netdev->priv_flags & IFF_802_1Q_VLAN) |
| phys_dev = vlan_dev_real_dev(netdev); |
| |
| if (bnx2fc_hba_lookup(phys_dev)) { |
| mutex_unlock(&bnx2fc_dev_lock); |
| return true; |
| } |
| |
| mutex_unlock(&bnx2fc_dev_lock); |
| return false; |
| } |
| |
| |
| static struct fcoe_transport bnx2fc_transport = { |
| .name = {"bnx2fc"}, |
| .attached = false, |
| .list = LIST_HEAD_INIT(bnx2fc_transport.list), |
| .alloc = bnx2fc_ctlr_alloc, |
| .match = bnx2fc_match, |
| .create = bnx2fc_create, |
| .destroy = bnx2fc_destroy, |
| .enable = bnx2fc_enable, |
| .disable = bnx2fc_disable, |
| }; |
| |
| /** |
| * bnx2fc_percpu_thread_create - Create a receive thread for an |
| * online CPU |
| * |
| * @cpu: cpu index for the online cpu |
| */ |
| static void bnx2fc_percpu_thread_create(unsigned int cpu) |
| { |
| struct bnx2fc_percpu_s *p; |
| struct task_struct *thread; |
| |
| p = &per_cpu(bnx2fc_percpu, cpu); |
| |
| thread = kthread_create_on_node(bnx2fc_percpu_io_thread, |
| (void *)p, cpu_to_node(cpu), |
| "bnx2fc_thread/%d", cpu); |
| /* bind thread to the cpu */ |
| if (likely(!IS_ERR(thread))) { |
| kthread_bind(thread, cpu); |
| p->iothread = thread; |
| wake_up_process(thread); |
| } |
| } |
| |
| static void bnx2fc_percpu_thread_destroy(unsigned int cpu) |
| { |
| struct bnx2fc_percpu_s *p; |
| struct task_struct *thread; |
| struct bnx2fc_work *work, *tmp; |
| |
| BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); |
| |
| /* Prevent any new work from being queued for this CPU */ |
| p = &per_cpu(bnx2fc_percpu, cpu); |
| spin_lock_bh(&p->fp_work_lock); |
| thread = p->iothread; |
| p->iothread = NULL; |
| |
| |
| /* Free all work in the list */ |
| list_for_each_entry_safe(work, tmp, &p->work_list, list) { |
| list_del_init(&work->list); |
| bnx2fc_process_cq_compl(work->tgt, work->wqe); |
| kfree(work); |
| } |
| |
| spin_unlock_bh(&p->fp_work_lock); |
| |
| if (thread) |
| kthread_stop(thread); |
| } |
| |
| |
| static int bnx2fc_cpu_online(unsigned int cpu) |
| { |
| printk(PFX "CPU %x online: Create Rx thread\n", cpu); |
| bnx2fc_percpu_thread_create(cpu); |
| return 0; |
| } |
| |
| static int bnx2fc_cpu_dead(unsigned int cpu) |
| { |
| printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); |
| bnx2fc_percpu_thread_destroy(cpu); |
| return 0; |
| } |
| |
| static int bnx2fc_slave_configure(struct scsi_device *sdev) |
| { |
| if (!bnx2fc_queue_depth) |
| return 0; |
| |
| scsi_change_queue_depth(sdev, bnx2fc_queue_depth); |
| return 0; |
| } |
| |
| static enum cpuhp_state bnx2fc_online_state; |
| |
| /** |
| * bnx2fc_mod_init - module init entry point |
| * |
| * Initialize driver wide global data structures, and register |
| * with cnic module |
| **/ |
| static int __init bnx2fc_mod_init(void) |
| { |
| struct fcoe_percpu_s *bg; |
| struct task_struct *l2_thread; |
| int rc = 0; |
| unsigned int cpu = 0; |
| struct bnx2fc_percpu_s *p; |
| |
| printk(KERN_INFO PFX "%s", version); |
| |
| /* register as a fcoe transport */ |
| rc = fcoe_transport_attach(&bnx2fc_transport); |
| if (rc) { |
| printk(KERN_ERR "failed to register an fcoe transport, check " |
| "if libfcoe is loaded\n"); |
| goto out; |
| } |
| |
| INIT_LIST_HEAD(&adapter_list); |
| INIT_LIST_HEAD(&if_list); |
| mutex_init(&bnx2fc_dev_lock); |
| adapter_count = 0; |
| |
| /* Attach FC transport template */ |
| rc = bnx2fc_attach_transport(); |
| if (rc) |
| goto detach_ft; |
| |
| bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); |
| if (!bnx2fc_wq) { |
| rc = -ENOMEM; |
| goto release_bt; |
| } |
| |
| bg = &bnx2fc_global; |
| skb_queue_head_init(&bg->fcoe_rx_list); |
| l2_thread = kthread_create(bnx2fc_l2_rcv_thread, |
| (void *)bg, |
| "bnx2fc_l2_thread"); |
| if (IS_ERR(l2_thread)) { |
| rc = PTR_ERR(l2_thread); |
| goto free_wq; |
| } |
| wake_up_process(l2_thread); |
| spin_lock_bh(&bg->fcoe_rx_list.lock); |
| bg->kthread = l2_thread; |
| spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| |
| for_each_possible_cpu(cpu) { |
| p = &per_cpu(bnx2fc_percpu, cpu); |
| INIT_LIST_HEAD(&p->work_list); |
| spin_lock_init(&p->fp_work_lock); |
| } |
| |
| get_online_cpus(); |
| |
| for_each_online_cpu(cpu) |
| bnx2fc_percpu_thread_create(cpu); |
| |
| rc = cpuhp_setup_state_nocalls(CPUHP_AP_ONLINE_DYN, |
| "scsi/bnx2fc:online", |
| bnx2fc_cpu_online, NULL); |
| if (rc < 0) |
| goto stop_threads; |
| bnx2fc_online_state = rc; |
| |
| cpuhp_setup_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD, "scsi/bnx2fc:dead", |
| NULL, bnx2fc_cpu_dead); |
| put_online_cpus(); |
| |
| cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); |
| |
| return 0; |
| |
| stop_threads: |
| for_each_online_cpu(cpu) |
| bnx2fc_percpu_thread_destroy(cpu); |
| put_online_cpus(); |
| kthread_stop(l2_thread); |
| free_wq: |
| destroy_workqueue(bnx2fc_wq); |
| release_bt: |
| bnx2fc_release_transport(); |
| detach_ft: |
| fcoe_transport_detach(&bnx2fc_transport); |
| out: |
| return rc; |
| } |
| |
| static void __exit bnx2fc_mod_exit(void) |
| { |
| LIST_HEAD(to_be_deleted); |
| struct bnx2fc_hba *hba, *next; |
| struct fcoe_percpu_s *bg; |
| struct task_struct *l2_thread; |
| struct sk_buff *skb; |
| unsigned int cpu = 0; |
| |
| /* |
| * NOTE: Since cnic calls register_driver routine rtnl_lock, |
| * it will have higher precedence than bnx2fc_dev_lock. |
| * unregister_device() cannot be called with bnx2fc_dev_lock |
| * held. |
| */ |
| mutex_lock(&bnx2fc_dev_lock); |
| list_splice_init(&adapter_list, &to_be_deleted); |
| adapter_count = 0; |
| mutex_unlock(&bnx2fc_dev_lock); |
| |
| /* Unregister with cnic */ |
| list_for_each_entry_safe(hba, next, &to_be_deleted, list) { |
| list_del_init(&hba->list); |
| printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p\n", |
| hba); |
| bnx2fc_ulp_stop(hba); |
| /* unregister cnic device */ |
| if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, |
| &hba->reg_with_cnic)) |
| hba->cnic->unregister_device(hba->cnic, |
| CNIC_ULP_FCOE); |
| bnx2fc_hba_destroy(hba); |
| } |
| cnic_unregister_driver(CNIC_ULP_FCOE); |
| |
| /* Destroy global thread */ |
| bg = &bnx2fc_global; |
| spin_lock_bh(&bg->fcoe_rx_list.lock); |
| l2_thread = bg->kthread; |
| bg->kthread = NULL; |
| while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) |
| kfree_skb(skb); |
| |
| spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| |
| if (l2_thread) |
| kthread_stop(l2_thread); |
| |
| get_online_cpus(); |
| /* Destroy per cpu threads */ |
| for_each_online_cpu(cpu) { |
| bnx2fc_percpu_thread_destroy(cpu); |
| } |
| |
| cpuhp_remove_state_nocalls(bnx2fc_online_state); |
| cpuhp_remove_state_nocalls(CPUHP_SCSI_BNX2FC_DEAD); |
| |
| put_online_cpus(); |
| |
| destroy_workqueue(bnx2fc_wq); |
| /* |
| * detach from scsi transport |
| * must happen after all destroys are done |
| */ |
| bnx2fc_release_transport(); |
| |
| /* detach from fcoe transport */ |
| fcoe_transport_detach(&bnx2fc_transport); |
| } |
| |
| module_init(bnx2fc_mod_init); |
| module_exit(bnx2fc_mod_exit); |
| |
| static struct fcoe_sysfs_function_template bnx2fc_fcoe_sysfs_templ = { |
| .set_fcoe_ctlr_enabled = bnx2fc_ctlr_enabled, |
| .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, |
| .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, |
| .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, |
| .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, |
| .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, |
| .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, |
| |
| .get_fcoe_fcf_selected = fcoe_fcf_get_selected, |
| .get_fcoe_fcf_vlan_id = bnx2fc_fcf_get_vlan_id, |
| }; |
| |
| static struct fc_function_template bnx2fc_transport_function = { |
| .show_host_node_name = 1, |
| .show_host_port_name = 1, |
| .show_host_supported_classes = 1, |
| .show_host_supported_fc4s = 1, |
| .show_host_active_fc4s = 1, |
| .show_host_maxframe_size = 1, |
| |
| .show_host_port_id = 1, |
| .show_host_supported_speeds = 1, |
| .get_host_speed = fc_get_host_speed, |
| .show_host_speed = 1, |
| .show_host_port_type = 1, |
| .get_host_port_state = fc_get_host_port_state, |
| .show_host_port_state = 1, |
| .show_host_symbolic_name = 1, |
| |
| .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
| sizeof(struct bnx2fc_rport)), |
| .show_rport_maxframe_size = 1, |
| .show_rport_supported_classes = 1, |
| |
| .show_host_fabric_name = 1, |
| .show_starget_node_name = 1, |
| .show_starget_port_name = 1, |
| .show_starget_port_id = 1, |
| .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
| .show_rport_dev_loss_tmo = 1, |
| .get_fc_host_stats = bnx2fc_get_host_stats, |
| |
| .issue_fc_host_lip = bnx2fc_fcoe_reset, |
| |
| .terminate_rport_io = fc_rport_terminate_io, |
| |
| .vport_create = bnx2fc_vport_create, |
| .vport_delete = bnx2fc_vport_destroy, |
| .vport_disable = bnx2fc_vport_disable, |
| .bsg_request = fc_lport_bsg_request, |
| }; |
| |
| static struct fc_function_template bnx2fc_vport_xport_function = { |
| .show_host_node_name = 1, |
| .show_host_port_name = 1, |
| .show_host_supported_classes = 1, |
| .show_host_supported_fc4s = 1, |
| .show_host_active_fc4s = 1, |
| .show_host_maxframe_size = 1, |
| |
| .show_host_port_id = 1, |
| .show_host_supported_speeds = 1, |
| .get_host_speed = fc_get_host_speed, |
| .show_host_speed = 1, |
| .show_host_port_type = 1, |
| .get_host_port_state = fc_get_host_port_state, |
| .show_host_port_state = 1, |
| .show_host_symbolic_name = 1, |
| |
| .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
| sizeof(struct bnx2fc_rport)), |
| .show_rport_maxframe_size = 1, |
| .show_rport_supported_classes = 1, |
| |
| .show_host_fabric_name = 1, |
| .show_starget_node_name = 1, |
| .show_starget_port_name = 1, |
| .show_starget_port_id = 1, |
| .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
| .show_rport_dev_loss_tmo = 1, |
| .get_fc_host_stats = fc_get_host_stats, |
| .issue_fc_host_lip = bnx2fc_fcoe_reset, |
| .terminate_rport_io = fc_rport_terminate_io, |
| .bsg_request = fc_lport_bsg_request, |
| }; |
| |
| /* |
| * Additional scsi_host attributes. |
| */ |
| static ssize_t |
| bnx2fc_tm_timeout_show(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct Scsi_Host *shost = class_to_shost(dev); |
| struct fc_lport *lport = shost_priv(shost); |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| |
| sprintf(buf, "%u\n", interface->tm_timeout); |
| return strlen(buf); |
| } |
| |
| static ssize_t |
| bnx2fc_tm_timeout_store(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = class_to_shost(dev); |
| struct fc_lport *lport = shost_priv(shost); |
| struct fcoe_port *port = lport_priv(lport); |
| struct bnx2fc_interface *interface = port->priv; |
| int rval, val; |
| |
| rval = kstrtouint(buf, 10, &val); |
| if (rval) |
| return rval; |
| if (val > 255) |
| return -ERANGE; |
| |
| interface->tm_timeout = (u8)val; |
| return strlen(buf); |
| } |
| |
| static DEVICE_ATTR(tm_timeout, S_IRUGO|S_IWUSR, bnx2fc_tm_timeout_show, |
| bnx2fc_tm_timeout_store); |
| |
| static struct device_attribute *bnx2fc_host_attrs[] = { |
| &dev_attr_tm_timeout, |
| NULL, |
| }; |
| |
| /** |
| * scsi_host_template structure used while registering with SCSI-ml |
| */ |
| static struct scsi_host_template bnx2fc_shost_template = { |
| .module = THIS_MODULE, |
| .name = "QLogic Offload FCoE Initiator", |
| .queuecommand = bnx2fc_queuecommand, |
| .eh_abort_handler = bnx2fc_eh_abort, /* abts */ |
| .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ |
| .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ |
| .eh_host_reset_handler = fc_eh_host_reset, |
| .slave_alloc = fc_slave_alloc, |
| .change_queue_depth = scsi_change_queue_depth, |
| .this_id = -1, |
| .cmd_per_lun = 3, |
| .use_clustering = ENABLE_CLUSTERING, |
| .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, |
| .max_sectors = 1024, |
| .track_queue_depth = 1, |
| .slave_configure = bnx2fc_slave_configure, |
| .shost_attrs = bnx2fc_host_attrs, |
| }; |
| |
| static struct libfc_function_template bnx2fc_libfc_fcn_templ = { |
| .frame_send = bnx2fc_xmit, |
| .elsct_send = bnx2fc_elsct_send, |
| .fcp_abort_io = bnx2fc_abort_io, |
| .fcp_cleanup = bnx2fc_cleanup, |
| .get_lesb = fcoe_get_lesb, |
| .rport_event_callback = bnx2fc_rport_event_handler, |
| }; |
| |
| /** |
| * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface |
| * structure carrying callback function pointers |
| */ |
| static struct cnic_ulp_ops bnx2fc_cnic_cb = { |
| .owner = THIS_MODULE, |
| .cnic_init = bnx2fc_ulp_init, |
| .cnic_exit = bnx2fc_ulp_exit, |
| .cnic_start = bnx2fc_ulp_start, |
| .cnic_stop = bnx2fc_ulp_stop, |
| .indicate_kcqes = bnx2fc_indicate_kcqe, |
| .indicate_netevent = bnx2fc_indicate_netevent, |
| .cnic_get_stats = bnx2fc_ulp_get_stats, |
| }; |