diff options
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 256 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe.h | 3 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe_ctlr.c | 38 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe_transport.c | 9 |
4 files changed, 182 insertions, 124 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index e9599600aa2..335e8519280 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -168,6 +168,14 @@ static struct fc_function_template fcoe_nport_fc_functions = { .show_host_supported_fc4s = 1, .show_host_active_fc4s = 1, .show_host_maxframe_size = 1, + .show_host_serial_number = 1, + .show_host_manufacturer = 1, + .show_host_model = 1, + .show_host_model_description = 1, + .show_host_hardware_version = 1, + .show_host_driver_version = 1, + .show_host_firmware_version = 1, + .show_host_optionrom_version = 1, .show_host_port_id = 1, .show_host_supported_speeds = 1, @@ -208,6 +216,14 @@ static struct fc_function_template fcoe_vport_fc_functions = { .show_host_supported_fc4s = 1, .show_host_active_fc4s = 1, .show_host_maxframe_size = 1, + .show_host_serial_number = 1, + .show_host_manufacturer = 1, + .show_host_model = 1, + .show_host_model_description = 1, + .show_host_hardware_version = 1, + .show_host_driver_version = 1, + .show_host_firmware_version = 1, + .show_host_optionrom_version = 1, .show_host_port_id = 1, .show_host_supported_speeds = 1, @@ -364,11 +380,10 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, if (!fcoe) { FCOE_NETDEV_DBG(netdev, "Could not allocate fcoe structure\n"); fcoe = ERR_PTR(-ENOMEM); - goto out_nomod; + goto out_putmod; } dev_hold(netdev); - kref_init(&fcoe->kref); /* * Initialize FIP. @@ -384,54 +399,18 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, kfree(fcoe); dev_put(netdev); fcoe = ERR_PTR(err); - goto out_nomod; + goto out_putmod; } goto out; -out_nomod: +out_putmod: module_put(THIS_MODULE); out: return fcoe; } /** - * fcoe_interface_release() - fcoe_port kref release function - * @kref: Embedded reference count in an fcoe_interface struct - */ -static void fcoe_interface_release(struct kref *kref) -{ - struct fcoe_interface *fcoe; - struct net_device *netdev; - - fcoe = container_of(kref, struct fcoe_interface, kref); - netdev = fcoe->netdev; - /* tear-down the FCoE controller */ - fcoe_ctlr_destroy(&fcoe->ctlr); - kfree(fcoe); - dev_put(netdev); - module_put(THIS_MODULE); -} - -/** - * fcoe_interface_get() - Get a reference to a FCoE interface - * @fcoe: The FCoE interface to be held - */ -static inline void fcoe_interface_get(struct fcoe_interface *fcoe) -{ - kref_get(&fcoe->kref); -} - -/** - * fcoe_interface_put() - Put a reference to a FCoE interface - * @fcoe: The FCoE interface to be released - */ -static inline void fcoe_interface_put(struct fcoe_interface *fcoe) -{ - kref_put(&fcoe->kref, fcoe_interface_release); -} - -/** * fcoe_interface_cleanup() - Clean up a FCoE interface * @fcoe: The FCoE interface to be cleaned up * @@ -478,7 +457,11 @@ static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) rtnl_unlock(); /* Release the self-reference taken during fcoe_interface_create() */ - fcoe_interface_put(fcoe); + /* tear-down the FCoE controller */ + fcoe_ctlr_destroy(fip); + kfree(fcoe); + dev_put(netdev); + module_put(THIS_MODULE); } /** @@ -734,6 +717,85 @@ static int fcoe_shost_config(struct fc_lport *lport, struct device *dev) return 0; } + +/** + * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE + * @lport: The local port that is associated with the net device + * @netdev: The associated net device + * + * Must be called after fcoe_shost_config() as it will use local port mutex + * + */ +static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) +{ + struct fcoe_interface *fcoe; + struct fcoe_port *port; + struct net_device *realdev; + int rc; + struct netdev_fcoe_hbainfo fdmi; + + port = lport_priv(lport); + fcoe = port->priv; + realdev = fcoe->realdev; + + if (!realdev) + return; + + /* No FDMI state m/c for NPIV ports */ + if (lport->vport) + return; + + if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { + memset(&fdmi, 0, sizeof(fdmi)); + rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, + &fdmi); + if (rc) { + printk(KERN_INFO "fcoe: Failed to retrieve FDMI " + "information from netdev.\n"); + return; + } + + snprintf(fc_host_serial_number(lport->host), + FC_SERIAL_NUMBER_SIZE, + "%s", + fdmi.serial_number); + snprintf(fc_host_manufacturer(lport->host), + FC_SERIAL_NUMBER_SIZE, + "%s", + fdmi.manufacturer); + snprintf(fc_host_model(lport->host), + FC_SYMBOLIC_NAME_SIZE, + "%s", + fdmi.model); + snprintf(fc_host_model_description(lport->host), + FC_SYMBOLIC_NAME_SIZE, + "%s", + fdmi.model_description); + snprintf(fc_host_hardware_version(lport->host), + FC_VERSION_STRING_SIZE, + "%s", + fdmi.hardware_version); + snprintf(fc_host_driver_version(lport->host), + FC_VERSION_STRING_SIZE, + "%s", + fdmi.driver_version); + snprintf(fc_host_optionrom_version(lport->host), + FC_VERSION_STRING_SIZE, + "%s", + fdmi.optionrom_version); + snprintf(fc_host_firmware_version(lport->host), + FC_VERSION_STRING_SIZE, + "%s", + fdmi.firmware_version); + + /* Enable FDMI lport states */ + lport->fdmi_enabled = 1; + } else { + lport->fdmi_enabled = 0; + printk(KERN_INFO "fcoe: No FDMI support.\n"); + } +} + /** * fcoe_oem_match() - The match routine for the offloaded exchange manager * @fp: The I/O frame @@ -881,9 +943,6 @@ static void fcoe_if_destroy(struct fc_lport *lport) dev_uc_del(netdev, port->data_src_addr); rtnl_unlock(); - /* Release reference held in fcoe_if_create() */ - fcoe_interface_put(fcoe); - /* Free queued packets for the per-CPU receive threads */ fcoe_percpu_clean(lport); @@ -1047,6 +1106,9 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, goto out_lp_destroy; } + /* Initialized FDMI information */ + fcoe_fdmi_info(lport, netdev); + /* * fcoe_em_alloc() and fcoe_hostlist_add() both * need to be atomic with respect to other changes to the @@ -1070,7 +1132,6 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, goto out_lp_destroy; } - fcoe_interface_get(fcoe); return lport; out_lp_destroy: @@ -1375,7 +1436,7 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, goto err; fps = &per_cpu(fcoe_percpu, cpu); - spin_lock_bh(&fps->fcoe_rx_list.lock); + spin_lock(&fps->fcoe_rx_list.lock); if (unlikely(!fps->thread)) { /* * The targeted CPU is not ready, let's target @@ -1386,12 +1447,12 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, "ready for incoming skb- using first online " "CPU.\n"); - spin_unlock_bh(&fps->fcoe_rx_list.lock); + spin_unlock(&fps->fcoe_rx_list.lock); cpu = cpumask_first(cpu_online_mask); fps = &per_cpu(fcoe_percpu, cpu); - spin_lock_bh(&fps->fcoe_rx_list.lock); + spin_lock(&fps->fcoe_rx_list.lock); if (!fps->thread) { - spin_unlock_bh(&fps->fcoe_rx_list.lock); + spin_unlock(&fps->fcoe_rx_list.lock); goto err; } } @@ -1402,24 +1463,17 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, * so we're free to queue skbs into it's queue. */ - /* If this is a SCSI-FCP frame, and this is already executing on the - * correct CPU, and the queue for this CPU is empty, then go ahead - * and process the frame directly in the softirq context. - * This lets us process completions without context switching from the - * NET_RX softirq, to our receive processing thread, and then back to - * BLOCK softirq context. + /* + * Note: We used to have a set of conditions under which we would + * call fcoe_recv_frame directly, rather than queuing to the rx list + * as it could save a few cycles, but doing so is prohibited, as + * fcoe_recv_frame has several paths that may sleep, which is forbidden + * in softirq context. */ - if (fh->fh_type == FC_TYPE_FCP && - cpu == smp_processor_id() && - skb_queue_empty(&fps->fcoe_rx_list)) { - spin_unlock_bh(&fps->fcoe_rx_list.lock); - fcoe_recv_frame(skb); - } else { - __skb_queue_tail(&fps->fcoe_rx_list, skb); - if (fps->fcoe_rx_list.qlen == 1) - wake_up_process(fps->thread); - spin_unlock_bh(&fps->fcoe_rx_list.lock); - } + __skb_queue_tail(&fps->fcoe_rx_list, skb); + if (fps->thread->state == TASK_INTERRUPTIBLE) + wake_up_process(fps->thread); + spin_unlock(&fps->fcoe_rx_list.lock); return 0; err: @@ -1498,7 +1552,7 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) /* crc offload */ if (likely(lport->crc_offload)) { - skb->ip_summed = CHECKSUM_PARTIAL; + skb->ip_summed = CHECKSUM_UNNECESSARY; skb->csum_start = skb_headroom(skb); skb->csum_offset = skb->len; crc = 0; @@ -1515,7 +1569,7 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) return -ENOMEM; } frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; - cp = kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ) + cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; } else { cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); @@ -1526,7 +1580,7 @@ static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) cp->fcoe_crc32 = cpu_to_le32(~crc); if (skb_is_nonlinear(skb)) { - kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ); + kunmap_atomic(cp); cp = NULL; } @@ -1736,23 +1790,29 @@ static int fcoe_percpu_receive_thread(void *arg) { struct fcoe_percpu_s *p = arg; struct sk_buff *skb; + struct sk_buff_head tmp; + + skb_queue_head_init(&tmp); set_user_nice(current, -20); while (!kthread_should_stop()) { spin_lock_bh(&p->fcoe_rx_list.lock); - while ((skb = __skb_dequeue(&p->fcoe_rx_list)) == NULL) { + skb_queue_splice_init(&p->fcoe_rx_list, &tmp); + spin_unlock_bh(&p->fcoe_rx_list.lock); + + while ((skb = __skb_dequeue(&tmp)) != NULL) + fcoe_recv_frame(skb); + + spin_lock_bh(&p->fcoe_rx_list.lock); + if (!skb_queue_len(&p->fcoe_rx_list)) { set_current_state(TASK_INTERRUPTIBLE); spin_unlock_bh(&p->fcoe_rx_list.lock); schedule(); set_current_state(TASK_RUNNING); - if (kthread_should_stop()) - return 0; - spin_lock_bh(&p->fcoe_rx_list.lock); - } - spin_unlock_bh(&p->fcoe_rx_list.lock); - fcoe_recv_frame(skb); + } else + spin_unlock_bh(&p->fcoe_rx_list.lock); } return 0; } @@ -2009,20 +2069,13 @@ static void fcoe_destroy_work(struct work_struct *work) { struct fcoe_port *port; struct fcoe_interface *fcoe; - int npiv = 0; port = container_of(work, struct fcoe_port, destroy_work); mutex_lock(&fcoe_config_mutex); - /* set if this is an NPIV port */ - npiv = port->lport->vport ? 1 : 0; - fcoe = port->priv; fcoe_if_destroy(port->lport); - - /* Do not tear down the fcoe interface for NPIV port */ - if (!npiv) - fcoe_interface_cleanup(fcoe); + fcoe_interface_cleanup(fcoe); mutex_unlock(&fcoe_config_mutex); } @@ -2133,8 +2186,12 @@ static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode) /* start FIP Discovery and FLOGI */ lport->boot_time = jiffies; fc_fabric_login(lport); - if (!fcoe_link_ok(lport)) + if (!fcoe_link_ok(lport)) { + rtnl_unlock(); fcoe_ctlr_link_up(&fcoe->ctlr); + mutex_unlock(&fcoe_config_mutex); + return rc; + } out_nodev: rtnl_unlock(); @@ -2207,31 +2264,14 @@ static int fcoe_link_ok(struct fc_lport *lport) static void fcoe_percpu_clean(struct fc_lport *lport) { struct fcoe_percpu_s *pp; - struct fcoe_rcv_info *fr; - struct sk_buff_head *list; - struct sk_buff *skb, *next; - struct sk_buff *head; + struct sk_buff *skb; unsigned int cpu; for_each_possible_cpu(cpu) { pp = &per_cpu(fcoe_percpu, cpu); - spin_lock_bh(&pp->fcoe_rx_list.lock); - list = &pp->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 == lport) { - __skb_unlink(skb, list); - kfree_skb(skb); - } - } - if (!pp->thread || !cpu_online(cpu)) { - spin_unlock_bh(&pp->fcoe_rx_list.lock); + if (!pp->thread || !cpu_online(cpu)) continue; - } skb = dev_alloc_skb(0); if (!skb) { @@ -2240,6 +2280,7 @@ static void fcoe_percpu_clean(struct fc_lport *lport) } skb->destructor = fcoe_percpu_flush_done; + spin_lock_bh(&pp->fcoe_rx_list.lock); __skb_queue_tail(&pp->fcoe_rx_list, skb); if (pp->fcoe_rx_list.qlen == 1) wake_up_process(pp->thread); @@ -2593,12 +2634,15 @@ static int fcoe_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); mutex_lock(&n_port->lp_mutex); list_del(&vn_port->list); mutex_unlock(&n_port->lp_mutex); - queue_work(fcoe_wq, &port->destroy_work); + + mutex_lock(&fcoe_config_mutex); + fcoe_if_destroy(vn_port); + mutex_unlock(&fcoe_config_mutex); + return 0; } diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h index bcc89e63949..3c2733a12aa 100644 --- a/drivers/scsi/fcoe/fcoe.h +++ b/drivers/scsi/fcoe/fcoe.h @@ -71,8 +71,6 @@ do { \ * @ctlr: The FCoE controller (for FIP) * @oem: The offload exchange manager for all local port * instances associated with this port - * @kref: The kernel reference - * * This structure is 1:1 with a net devive. */ struct fcoe_interface { @@ -83,7 +81,6 @@ struct fcoe_interface { struct packet_type fip_packet_type; struct fcoe_ctlr ctlr; struct fc_exch_mgr *oem; - struct kref kref; }; #define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr) diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index e7522dcc296..249a106888d 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -242,7 +242,7 @@ static void fcoe_ctlr_announce(struct fcoe_ctlr *fip) printk(KERN_INFO "libfcoe: host%d: FIP selected " "Fibre-Channel Forwarder MAC %pM\n", fip->lp->host->host_no, sel->fcf_mac); - memcpy(fip->dest_addr, sel->fcf_mac, ETH_ALEN); + memcpy(fip->dest_addr, sel->fcoe_mac, ETH_ALEN); fip->map_dest = 0; } unlock: @@ -824,6 +824,7 @@ static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip, memcpy(fcf->fcf_mac, ((struct fip_mac_desc *)desc)->fd_mac, ETH_ALEN); + memcpy(fcf->fcoe_mac, fcf->fcf_mac, ETH_ALEN); if (!is_valid_ether_addr(fcf->fcf_mac)) { LIBFCOE_FIP_DBG(fip, "Invalid MAC addr %pM in FIP adv\n", @@ -1013,6 +1014,7 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) struct fip_desc *desc; struct fip_encaps *els; struct fcoe_dev_stats *stats; + struct fcoe_fcf *sel; enum fip_desc_type els_dtype = 0; u8 els_op; u8 sub; @@ -1040,7 +1042,8 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) goto drop; /* Drop ELS if there are duplicate critical descriptors */ if (desc->fip_dtype < 32) { - if (desc_mask & 1U << desc->fip_dtype) { + if ((desc->fip_dtype != FIP_DT_MAC) && + (desc_mask & 1U << desc->fip_dtype)) { LIBFCOE_FIP_DBG(fip, "Duplicate Critical " "Descriptors in FIP ELS\n"); goto drop; @@ -1049,17 +1052,32 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) } switch (desc->fip_dtype) { case FIP_DT_MAC: + sel = fip->sel_fcf; if (desc_cnt == 1) { LIBFCOE_FIP_DBG(fip, "FIP descriptors " "received out of order\n"); goto drop; } + /* + * Some switch implementations send two MAC descriptors, + * with first MAC(granted_mac) being the FPMA, and the + * second one(fcoe_mac) is used as destination address + * for sending/receiving FCoE packets. FIP traffic is + * sent using fip_mac. For regular switches, both + * fip_mac and fcoe_mac would be the same. + */ + if (desc_cnt == 2) + memcpy(granted_mac, + ((struct fip_mac_desc *)desc)->fd_mac, + ETH_ALEN); if (dlen != sizeof(struct fip_mac_desc)) goto len_err; - memcpy(granted_mac, - ((struct fip_mac_desc *)desc)->fd_mac, - ETH_ALEN); + + if ((desc_cnt == 3) && (sel)) + memcpy(sel->fcoe_mac, + ((struct fip_mac_desc *)desc)->fd_mac, + ETH_ALEN); break; case FIP_DT_FLOGI: case FIP_DT_FDISC: @@ -1273,11 +1291,6 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip, * No Vx_Port description. Clear all NPIV ports, * followed by physical port */ - mutex_lock(&lport->lp_mutex); - list_for_each_entry(vn_port, &lport->vports, list) - fc_lport_reset(vn_port); - mutex_unlock(&lport->lp_mutex); - mutex_lock(&fip->ctlr_mutex); per_cpu_ptr(lport->dev_stats, get_cpu())->VLinkFailureCount++; @@ -1285,6 +1298,11 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip, fcoe_ctlr_reset(fip); mutex_unlock(&fip->ctlr_mutex); + mutex_lock(&lport->lp_mutex); + list_for_each_entry(vn_port, &lport->vports, list) + fc_lport_reset(vn_port); + mutex_unlock(&lport->lp_mutex); + fc_lport_reset(fip->lp); fcoe_ctlr_solicit(fip, NULL); } else { diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index bd97b2273f2..710e149d41b 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -210,10 +210,9 @@ u32 fcoe_fc_crc(struct fc_frame *fp) while (len > 0) { clen = min(len, PAGE_SIZE - (off & ~PAGE_MASK)); data = kmap_atomic( - skb_frag_page(frag) + (off >> PAGE_SHIFT), - KM_SKB_DATA_SOFTIRQ); + skb_frag_page(frag) + (off >> PAGE_SHIFT)); crc = crc32(crc, data + (off & ~PAGE_MASK), clen); - kunmap_atomic(data, KM_SKB_DATA_SOFTIRQ); + kunmap_atomic(data); off += clen; len -= clen; } @@ -620,8 +619,8 @@ static int libfcoe_device_notification(struct notifier_block *notifier, switch (event) { case NETDEV_UNREGISTER: - printk(KERN_ERR "libfcoe_device_notification: NETDEV_UNREGISTER %s\n", - netdev->name); + LIBFCOE_TRANSPORT_DBG("NETDEV_UNREGISTER %s\n", + netdev->name); fcoe_del_netdev_mapping(netdev); break; } |