diff options
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 398 | ||||
-rw-r--r-- | drivers/scsi/fcoe/fcoe.h | 25 | ||||
-rw-r--r-- | drivers/scsi/fcoe/libfcoe.c | 125 |
3 files changed, 304 insertions, 244 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 03e1926f40b5..0a5609bb5817 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -45,8 +45,6 @@ #include "fcoe.h" -static int debug_fcoe; - MODULE_AUTHOR("Open-FCoE.org"); MODULE_DESCRIPTION("FCoE"); MODULE_LICENSE("GPL v2"); @@ -54,7 +52,6 @@ MODULE_LICENSE("GPL v2"); /* fcoe host list */ LIST_HEAD(fcoe_hostlist); DEFINE_RWLOCK(fcoe_hostlist_lock); -DEFINE_TIMER(fcoe_timer, NULL, 0, 0); DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); /* Function Prototypes */ @@ -71,7 +68,7 @@ static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *); static int fcoe_hostlist_add(const struct fc_lport *); static int fcoe_hostlist_remove(const struct fc_lport *); -static int fcoe_check_wait_queue(struct fc_lport *); +static void fcoe_check_wait_queue(struct fc_lport *, struct sk_buff *); static int fcoe_device_notification(struct notifier_block *, ulong, void *); static void fcoe_dev_setup(void); static void fcoe_dev_cleanup(void); @@ -136,6 +133,58 @@ static struct scsi_host_template fcoe_shost_template = { }; /** + * fcoe_fip_recv - handle a received FIP frame. + * @skb: the receive 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 fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *ptype, + struct net_device *orig_dev) +{ + struct fcoe_softc *fc; + + fc = container_of(ptype, struct fcoe_softc, fip_packet_type); + fcoe_ctlr_recv(&fc->ctlr, skb); + return 0; +} + +/** + * fcoe_fip_send() - send an Ethernet-encapsulated FIP frame. + * @fip: FCoE controller. + * @skb: FIP Packet. + */ +static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) +{ + skb->dev = fcoe_from_ctlr(fip)->real_dev; + dev_queue_xmit(skb); +} + +/** + * fcoe_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 fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new) +{ + struct fcoe_softc *fc; + + fc = fcoe_from_ctlr(fip); + rtnl_lock(); + if (!is_zero_ether_addr(old)) + dev_unicast_delete(fc->real_dev, old); + dev_unicast_add(fc->real_dev, new); + rtnl_unlock(); +} + +/** * fcoe_lport_config() - sets up the fc_lport * @lp: ptr to the fc_lport * @@ -146,6 +195,7 @@ static int fcoe_lport_config(struct fc_lport *lp) lp->link_up = 0; lp->qfull = 0; lp->max_retry_count = 3; + lp->max_rport_retry_count = 3; lp->e_d_tov = 2 * 1000; /* FC-FS default */ lp->r_a_tov = 2 * 2 * 1000; lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | @@ -167,6 +217,42 @@ static int fcoe_lport_config(struct fc_lport *lp) } /** + * fcoe_netdev_cleanup() - clean up netdev configurations + * @fc: ptr to the fcoe_softc + */ +void fcoe_netdev_cleanup(struct fcoe_softc *fc) +{ + u8 flogi_maddr[ETH_ALEN]; + + /* Don't listen for Ethernet packets anymore */ + dev_remove_pack(&fc->fcoe_packet_type); + dev_remove_pack(&fc->fip_packet_type); + + /* Delete secondary MAC addresses */ + rtnl_lock(); + memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); + dev_unicast_delete(fc->real_dev, flogi_maddr); + if (!is_zero_ether_addr(fc->ctlr.data_src_addr)) + dev_unicast_delete(fc->real_dev, fc->ctlr.data_src_addr); + if (fc->ctlr.spma) + dev_unicast_delete(fc->real_dev, fc->ctlr.ctl_src_addr); + dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); + rtnl_unlock(); +} + +/** + * fcoe_queue_timer() - fcoe queue timer + * @lp: the fc_lport pointer + * + * Calls fcoe_check_wait_queue on timeout + * + */ +static void fcoe_queue_timer(ulong lp) +{ + fcoe_check_wait_queue((struct fc_lport *)lp, NULL); +} + +/** * fcoe_netdev_config() - Set up netdev for SW FCoE * @lp : ptr to the fc_lport * @netdev : ptr to the associated netdevice struct @@ -181,6 +267,7 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) u64 wwnn, wwpn; struct fcoe_softc *fc; u8 flogi_maddr[ETH_ALEN]; + struct netdev_hw_addr *ha; /* Setup lport private data to point to fcoe softc */ fc = lport_priv(lp); @@ -216,30 +303,44 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) #ifdef NETIF_F_FCOE_CRC if (netdev->features & NETIF_F_FCOE_CRC) { lp->crc_offload = 1; - printk(KERN_DEBUG "fcoe:%s supports FCCRC offload\n", - netdev->name); + FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); } #endif #ifdef NETIF_F_FSO if (netdev->features & NETIF_F_FSO) { lp->seq_offload = 1; lp->lso_max = netdev->gso_max_size; - printk(KERN_DEBUG "fcoe:%s supports LSO for max len 0x%x\n", - netdev->name, lp->lso_max); + FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", + lp->lso_max); } #endif if (netdev->fcoe_ddp_xid) { lp->lro_enabled = 1; lp->lro_xid = netdev->fcoe_ddp_xid; - printk(KERN_DEBUG "fcoe:%s supports LRO for max xid 0x%x\n", - netdev->name, lp->lro_xid); + FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", + lp->lro_xid); } skb_queue_head_init(&fc->fcoe_pending_queue); fc->fcoe_pending_queue_active = 0; + setup_timer(&fc->timer, fcoe_queue_timer, (unsigned long)lp); + + /* look for SAN MAC address, if multiple SAN MACs exist, only + * use the first one for SPMA */ + rcu_read_lock(); + for_each_dev_addr(netdev, ha) { + if ((ha->type == NETDEV_HW_ADDR_T_SAN) && + (is_valid_ether_addr(fc->ctlr.ctl_src_addr))) { + memcpy(fc->ctlr.ctl_src_addr, ha->addr, ETH_ALEN); + fc->ctlr.spma = 1; + break; + } + } + rcu_read_unlock(); /* setup Source Mac Address */ - memcpy(fc->ctlr.ctl_src_addr, fc->real_dev->dev_addr, - fc->real_dev->addr_len); + if (!fc->ctlr.spma) + memcpy(fc->ctlr.ctl_src_addr, fc->real_dev->dev_addr, + fc->real_dev->addr_len); wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0); fc_set_wwnn(lp, wwnn); @@ -254,7 +355,9 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) */ rtnl_lock(); memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); - dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN); + dev_unicast_add(fc->real_dev, flogi_maddr); + if (fc->ctlr.spma) + dev_unicast_add(fc->real_dev, fc->ctlr.ctl_src_addr); dev_mc_add(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); rtnl_unlock(); @@ -267,6 +370,11 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) fc->fcoe_packet_type.dev = fc->real_dev; dev_add_pack(&fc->fcoe_packet_type); + fc->fip_packet_type.func = fcoe_fip_recv; + fc->fip_packet_type.type = htons(ETH_P_FIP); + fc->fip_packet_type.dev = fc->real_dev; + dev_add_pack(&fc->fip_packet_type); + return 0; } @@ -296,7 +404,8 @@ static int fcoe_shost_config(struct fc_lport *lp, struct Scsi_Host *shost, /* add the new host to the SCSI-ml */ rc = scsi_add_host(lp->host, dev); if (rc) { - FC_DBG("fcoe_shost_config:error on scsi_add_host\n"); + FCOE_NETDEV_DBG(fcoe_netdev(lp), "fcoe_shost_config: " + "error on scsi_add_host\n"); return rc; } sprintf(fc_host_symbolic_name(lp->host), "%s v%s over %s", @@ -334,12 +443,10 @@ static int fcoe_if_destroy(struct net_device *netdev) { struct fc_lport *lp = NULL; struct fcoe_softc *fc; - u8 flogi_maddr[ETH_ALEN]; BUG_ON(!netdev); - printk(KERN_DEBUG "fcoe_if_destroy:interface on %s\n", - netdev->name); + FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); lp = fcoe_hostlist_lookup(netdev); if (!lp) @@ -353,9 +460,10 @@ static int fcoe_if_destroy(struct net_device *netdev) /* Remove the instance from fcoe's list */ fcoe_hostlist_remove(lp); - /* Don't listen for Ethernet packets anymore */ - dev_remove_pack(&fc->fcoe_packet_type); - dev_remove_pack(&fc->fip_packet_type); + /* clean up netdev configurations */ + fcoe_netdev_cleanup(fc); + + /* tear-down the FCoE controller */ fcoe_ctlr_destroy(&fc->ctlr); /* Cleanup the fc_lport */ @@ -370,22 +478,15 @@ static int fcoe_if_destroy(struct net_device *netdev) if (lp->emp) fc_exch_mgr_free(lp->emp); - /* Delete secondary MAC addresses */ - rtnl_lock(); - memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); - dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN); - if (!is_zero_ether_addr(fc->ctlr.data_src_addr)) - dev_unicast_delete(fc->real_dev, - fc->ctlr.data_src_addr, ETH_ALEN); - dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); - rtnl_unlock(); - /* Free the per-CPU receive threads */ fcoe_percpu_clean(lp); /* Free existing skbs */ fcoe_clean_pending_queue(lp); + /* Stop the timer */ + del_timer_sync(&fc->timer); + /* Free memory used by statistical counters */ fc_lport_free_stats(lp); @@ -439,58 +540,6 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = { }; /** - * fcoe_fip_recv - handle a received FIP frame. - * @skb: the receive 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 fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev, - struct packet_type *ptype, - struct net_device *orig_dev) -{ - struct fcoe_softc *fc; - - fc = container_of(ptype, struct fcoe_softc, fip_packet_type); - fcoe_ctlr_recv(&fc->ctlr, skb); - return 0; -} - -/** - * fcoe_fip_send() - send an Ethernet-encapsulated FIP frame. - * @fip: FCoE controller. - * @skb: FIP Packet. - */ -static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) -{ - skb->dev = fcoe_from_ctlr(fip)->real_dev; - dev_queue_xmit(skb); -} - -/** - * fcoe_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 fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new) -{ - struct fcoe_softc *fc; - - fc = fcoe_from_ctlr(fip); - rtnl_lock(); - if (!is_zero_ether_addr(old)) - dev_unicast_delete(fc->real_dev, old, ETH_ALEN); - dev_unicast_add(fc->real_dev, new, ETH_ALEN); - rtnl_unlock(); -} - -/** * fcoe_if_create() - this function creates the fcoe interface * @netdev: pointer the associated netdevice * @@ -508,8 +557,7 @@ static int fcoe_if_create(struct net_device *netdev) BUG_ON(!netdev); - printk(KERN_DEBUG "fcoe_if_create:interface on %s\n", - netdev->name); + FCOE_NETDEV_DBG(netdev, "Create Interface\n"); lp = fcoe_hostlist_lookup(netdev); if (lp) @@ -518,7 +566,7 @@ static int fcoe_if_create(struct net_device *netdev) shost = libfc_host_alloc(&fcoe_shost_template, sizeof(struct fcoe_softc)); if (!shost) { - FC_DBG("Could not allocate host structure\n"); + FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); return -ENOMEM; } lp = shost_priv(shost); @@ -527,14 +575,8 @@ static int fcoe_if_create(struct net_device *netdev) /* configure fc_lport, e.g., em */ rc = fcoe_lport_config(lp); if (rc) { - FC_DBG("Could not configure lport\n"); - goto out_host_put; - } - - /* configure lport network properties */ - rc = fcoe_netdev_config(lp, netdev); - if (rc) { - FC_DBG("Could not configure netdev for lport\n"); + FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " + "interface\n"); goto out_host_put; } @@ -545,29 +587,35 @@ static int fcoe_if_create(struct net_device *netdev) fc->ctlr.send = fcoe_fip_send; fc->ctlr.update_mac = fcoe_update_src_mac; - fc->fip_packet_type.func = fcoe_fip_recv; - fc->fip_packet_type.type = htons(ETH_P_FIP); - fc->fip_packet_type.dev = fc->real_dev; - dev_add_pack(&fc->fip_packet_type); + /* configure lport network properties */ + rc = fcoe_netdev_config(lp, netdev); + if (rc) { + FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " + "interface\n"); + goto out_netdev_cleanup; + } /* configure lport scsi host properties */ rc = fcoe_shost_config(lp, shost, &netdev->dev); if (rc) { - FC_DBG("Could not configure shost for lport\n"); - goto out_host_put; + FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " + "interface\n"); + goto out_netdev_cleanup; } /* lport exch manager allocation */ rc = fcoe_em_config(lp); if (rc) { - FC_DBG("Could not configure em for lport\n"); - goto out_host_put; + FCOE_NETDEV_DBG(netdev, "Could not configure the EM for the " + "interface\n"); + goto out_netdev_cleanup; } /* Initialize the library */ rc = fcoe_libfc_config(lp, &fcoe_libfc_fcn_templ); if (rc) { - FC_DBG("Could not configure libfc for lport!\n"); + FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " + "interface\n"); goto out_lp_destroy; } @@ -587,6 +635,8 @@ static int fcoe_if_create(struct net_device *netdev) out_lp_destroy: fc_exch_mgr_free(lp->emp); /* Free the EM */ +out_netdev_cleanup: + fcoe_netdev_cleanup(fc); out_host_put: scsi_host_put(lp->host); return rc; @@ -604,7 +654,7 @@ static int __init fcoe_if_init(void) fc_attach_transport(&fcoe_transport_function); if (!scsi_transport_fcoe_sw) { - printk(KERN_ERR "fcoe_init:fc_attach_transport() failed\n"); + printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n"); return -ENODEV; } @@ -665,7 +715,7 @@ static void fcoe_percpu_thread_destroy(unsigned int cpu) unsigned targ_cpu = smp_processor_id(); #endif /* CONFIG_SMP */ - printk(KERN_DEBUG "fcoe: Destroying receive thread for CPU %d\n", cpu); + FCOE_DBG("Destroying receive thread for CPU %d\n", cpu); /* Prevent any new skbs from being queued for this CPU. */ p = &per_cpu(fcoe_percpu, cpu); @@ -687,8 +737,8 @@ static void fcoe_percpu_thread_destroy(unsigned int cpu) p0 = &per_cpu(fcoe_percpu, targ_cpu); spin_lock_bh(&p0->fcoe_rx_list.lock); if (p0->thread) { - FC_DBG("Moving frames from CPU %d to CPU %d\n", - cpu, targ_cpu); + FCOE_DBG("Moving frames from CPU %d to CPU %d\n", + cpu, targ_cpu); while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL) __skb_queue_tail(&p0->fcoe_rx_list, skb); @@ -754,12 +804,12 @@ static int fcoe_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_ONLINE: case CPU_ONLINE_FROZEN: - FC_DBG("CPU %x online: Create Rx thread\n", cpu); + FCOE_DBG("CPU %x online: Create Rx thread\n", cpu); fcoe_percpu_thread_create(cpu); break; case CPU_DEAD: case CPU_DEAD_FROZEN: - FC_DBG("CPU %x offline: Remove Rx thread\n", cpu); + FCOE_DBG("CPU %x offline: Remove Rx thread\n", cpu); fcoe_percpu_thread_destroy(cpu); break; default: @@ -797,24 +847,21 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *dev, fc = container_of(ptype, struct fcoe_softc, fcoe_packet_type); lp = fc->ctlr.lp; if (unlikely(lp == NULL)) { - FC_DBG("cannot find hba structure"); + FCOE_NETDEV_DBG(dev, "Cannot find hba structure"); goto err2; } if (!lp->link_up) goto err2; - if (unlikely(debug_fcoe)) { - FC_DBG("skb_info: len:%d data_len:%d head:%p data:%p tail:%p " - "end:%p sum:%d dev:%s", skb->len, skb->data_len, - skb->head, skb->data, skb_tail_pointer(skb), - skb_end_pointer(skb), skb->csum, - skb->dev ? skb->dev->name : "<NULL>"); - - } + FCOE_NETDEV_DBG(dev, "skb_info: len:%d data_len:%d head:%p " + "data:%p tail:%p end:%p sum:%d dev:%s", + skb->len, skb->data_len, skb->head, skb->data, + skb_tail_pointer(skb), skb_end_pointer(skb), + skb->csum, skb->dev ? skb->dev->name : "<NULL>"); /* check for FCOE packet type */ if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { - FC_DBG("wrong FC type frame"); + FCOE_NETDEV_DBG(dev, "Wrong FC type frame"); goto err; } @@ -852,8 +899,9 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *dev, * the first CPU now. For non-SMP systems this * will check the same CPU twice. */ - FC_DBG("CPU is online, but no receive thread ready " - "for incoming skb- using first online CPU.\n"); + FCOE_NETDEV_DBG(dev, "CPU is online, but no receive thread " + "ready for incoming skb- using first online " + "CPU.\n"); spin_unlock_bh(&fps->fcoe_rx_list.lock); cpu = first_cpu(cpu_online_map); @@ -988,7 +1036,7 @@ u32 fcoe_fc_crc(struct fc_frame *fp) */ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) { - int wlen, rc = 0; + int wlen; u32 crc; struct ethhdr *eh; struct fcoe_crc_eof *cp; @@ -1021,8 +1069,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) sof = fr_sof(fp); eof = fr_eof(fp); - elen = (fc->real_dev->priv_flags & IFF_802_1Q_VLAN) ? - sizeof(struct vlan_ethhdr) : sizeof(struct ethhdr); + 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; @@ -1107,18 +1154,9 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) /* send down to lld */ fr_dev(fp) = lp; if (fc->fcoe_pending_queue.qlen) - rc = fcoe_check_wait_queue(lp); - - if (rc == 0) - rc = fcoe_start_io(skb); - - if (rc) { - spin_lock_bh(&fc->fcoe_pending_queue.lock); - __skb_queue_tail(&fc->fcoe_pending_queue, skb); - spin_unlock_bh(&fc->fcoe_pending_queue.lock); - if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH) - lp->qfull = 1; - } + fcoe_check_wait_queue(lp, skb); + else if (fcoe_start_io(skb)) + fcoe_check_wait_queue(lp, skb); return 0; } @@ -1162,19 +1200,17 @@ int fcoe_percpu_receive_thread(void *arg) fr = fcoe_dev_from_skb(skb); lp = fr->fr_dev; if (unlikely(lp == NULL)) { - FC_DBG("invalid HBA Structure"); + FCOE_NETDEV_DBG(skb->dev, "Invalid HBA Structure"); kfree_skb(skb); continue; } - if (unlikely(debug_fcoe)) { - FC_DBG("skb_info: len:%d data_len:%d head:%p data:%p " - "tail:%p end:%p sum:%d dev:%s", - skb->len, skb->data_len, - skb->head, skb->data, skb_tail_pointer(skb), - skb_end_pointer(skb), skb->csum, - skb->dev ? skb->dev->name : "<NULL>"); - } + FCOE_NETDEV_DBG(skb->dev, "skb_info: len:%d data_len:%d " + "head:%p data:%p tail:%p end:%p sum:%d dev:%s", + skb->len, skb->data_len, + skb->head, skb->data, skb_tail_pointer(skb), + skb_end_pointer(skb), skb->csum, + skb->dev ? skb->dev->name : "<NULL>"); /* * Save source MAC address before discarding header. @@ -1194,7 +1230,7 @@ int fcoe_percpu_receive_thread(void *arg) stats = fc_lport_get_stats(lp); if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { if (stats->ErrorFrames < 5) - printk(KERN_WARNING "FCoE version " + printk(KERN_WARNING "fcoe: FCoE version " "mismatch: The frame has " "version %x, but the " "initiator supports version " @@ -1247,7 +1283,7 @@ int fcoe_percpu_receive_thread(void *arg) if (fr_flags(fp) & FCPHF_CRC_UNCHECKED) { if (le32_to_cpu(fr_crc(fp)) != ~crc32(~0, skb->data, fr_len)) { - if (debug_fcoe || stats->InvalidCRCCount < 5) + if (stats->InvalidCRCCount < 5) printk(KERN_WARNING "fcoe: dropping " "frame with CRC error\n"); stats->InvalidCRCCount++; @@ -1268,32 +1304,6 @@ int fcoe_percpu_receive_thread(void *arg) } /** - * fcoe_watchdog() - fcoe timer callback - * @vp: - * - * This checks the pending queue length for fcoe and set lport qfull - * if the FCOE_MAX_QUEUE_DEPTH is reached. This is done for all fc_lport on the - * fcoe_hostlist. - * - * Returns: 0 for success - */ -void fcoe_watchdog(ulong vp) -{ - struct fcoe_softc *fc; - - read_lock(&fcoe_hostlist_lock); - list_for_each_entry(fc, &fcoe_hostlist, list) { - if (fc->ctlr.lp) - fcoe_check_wait_queue(fc->ctlr.lp); - } - read_unlock(&fcoe_hostlist_lock); - - fcoe_timer.expires = jiffies + (1 * HZ); - add_timer(&fcoe_timer); -} - - -/** * fcoe_check_wait_queue() - attempt to clear the transmit backlog * @lp: the fc_lport * @@ -1305,16 +1315,17 @@ void fcoe_watchdog(ulong vp) * The wait_queue is used when the skb transmit fails. skb will go * in the wait_queue which will be emptied by the timer function or * by the next skb transmit. - * - * Returns: 0 for success */ -static int fcoe_check_wait_queue(struct fc_lport *lp) +static void fcoe_check_wait_queue(struct fc_lport *lp, struct sk_buff *skb) { struct fcoe_softc *fc = lport_priv(lp); - struct sk_buff *skb; - int rc = -1; + int rc; spin_lock_bh(&fc->fcoe_pending_queue.lock); + + if (skb) + __skb_queue_tail(&fc->fcoe_pending_queue, skb); + if (fc->fcoe_pending_queue_active) goto out; fc->fcoe_pending_queue_active = 1; @@ -1340,23 +1351,26 @@ static int fcoe_check_wait_queue(struct fc_lport *lp) if (fc->fcoe_pending_queue.qlen < FCOE_LOW_QUEUE_DEPTH) lp->qfull = 0; + if (fc->fcoe_pending_queue.qlen && !timer_pending(&fc->timer)) + mod_timer(&fc->timer, jiffies + 2); fc->fcoe_pending_queue_active = 0; - rc = fc->fcoe_pending_queue.qlen; out: + if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH) + lp->qfull = 1; spin_unlock_bh(&fc->fcoe_pending_queue.lock); - return rc; + return; } /** * fcoe_dev_setup() - setup link change notification interface */ -static void fcoe_dev_setup() +static void fcoe_dev_setup(void) { register_netdevice_notifier(&fcoe_notifier); } /** - * fcoe_dev_setup() - cleanup link change notification interface + * fcoe_dev_cleanup() - cleanup link change notification interface */ static void fcoe_dev_cleanup(void) { @@ -1415,7 +1429,8 @@ static int fcoe_device_notification(struct notifier_block *notifier, case NETDEV_REGISTER: break; default: - FC_DBG("Unknown event %ld from netdev netlink\n", event); + FCOE_NETDEV_DBG(real_dev, "Unknown event %ld " + "from netdev netlink\n", event); } if (link_possible && !fcoe_link_ok(lp)) fcoe_ctlr_link_up(&fc->ctlr); @@ -1488,8 +1503,8 @@ static int fcoe_ethdrv_get(const struct net_device *netdev) owner = fcoe_netdev_to_module_owner(netdev); if (owner) { - printk(KERN_DEBUG "fcoe:hold driver module %s for %s\n", - module_name(owner), netdev->name); + FCOE_NETDEV_DBG(netdev, "Hold driver module %s\n", + module_name(owner)); return try_module_get(owner); } return -ENODEV; @@ -1510,8 +1525,8 @@ static int fcoe_ethdrv_put(const struct net_device *netdev) owner = fcoe_netdev_to_module_owner(netdev); if (owner) { - printk(KERN_DEBUG "fcoe:release driver module %s for %s\n", - module_name(owner), netdev->name); + FCOE_NETDEV_DBG(netdev, "Release driver module %s\n", + module_name(owner)); module_put(owner); return 0; } @@ -1542,7 +1557,7 @@ static int fcoe_destroy(const char *buffer, struct kernel_param *kp) } rc = fcoe_if_destroy(netdev); if (rc) { - printk(KERN_ERR "fcoe: fcoe_if_destroy(%s) failed\n", + printk(KERN_ERR "fcoe: Failed to destroy interface (%s)\n", netdev->name); rc = -EIO; goto out_putdev; @@ -1581,7 +1596,7 @@ static int fcoe_create(const char *buffer, struct kernel_param *kp) rc = fcoe_if_create(netdev); if (rc) { - printk(KERN_ERR "fcoe: fcoe_if_create(%s) failed\n", + printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", netdev->name); fcoe_ethdrv_put(netdev); rc = -EIO; @@ -1815,10 +1830,6 @@ static int __init fcoe_init(void) /* Setup link change notification */ fcoe_dev_setup(); - setup_timer(&fcoe_timer, fcoe_watchdog, 0); - - mod_timer(&fcoe_timer, jiffies + (10 * HZ)); - fcoe_if_init(); return 0; @@ -1844,9 +1855,6 @@ static void __exit fcoe_exit(void) fcoe_dev_cleanup(); - /* Stop the timer */ - del_timer_sync(&fcoe_timer); - /* releases the associated fcoe hosts */ list_for_each_entry_safe(fc, tmp, &fcoe_hostlist, list) fcoe_if_destroy(fc->real_dev); diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h index 917aae886897..0d724fa0898f 100644 --- a/drivers/scsi/fcoe/fcoe.h +++ b/drivers/scsi/fcoe/fcoe.h @@ -40,6 +40,30 @@ #define FCOE_MIN_XID 0x0001 /* the min xid supported by fcoe_sw */ #define FCOE_MAX_XID 0x07ef /* the max xid supported by fcoe_sw */ +unsigned int fcoe_debug_logging; +module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); + +#define FCOE_LOGGING 0x01 /* General logging, not categorized */ +#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */ + +#define FCOE_CHECK_LOGGING(LEVEL, CMD) \ +do { \ + if (unlikely(fcoe_debug_logging & LEVEL)) \ + do { \ + CMD; \ + } while (0); \ +} while (0); + +#define FCOE_DBG(fmt, args...) \ + FCOE_CHECK_LOGGING(FCOE_LOGGING, \ + printk(KERN_INFO "fcoe: " fmt, ##args);) + +#define FCOE_NETDEV_DBG(netdev, fmt, args...) \ + FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \ + printk(KERN_INFO "fcoe: %s" fmt, \ + netdev->name, ##args);) + /* * this percpu struct for fcoe */ @@ -61,6 +85,7 @@ struct fcoe_softc { struct packet_type fip_packet_type; struct sk_buff_head fcoe_pending_queue; u8 fcoe_pending_queue_active; + struct timer_list timer; /* queue timer */ struct fcoe_ctlr ctlr; }; diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c index 62ba0f39c6bd..f544340d318b 100644 --- a/drivers/scsi/fcoe/libfcoe.c +++ b/drivers/scsi/fcoe/libfcoe.c @@ -56,15 +56,28 @@ static void fcoe_ctlr_recv_work(struct work_struct *); static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS; -static u32 fcoe_ctlr_debug; /* 1 for basic, 2 for noisy debug */ +unsigned int libfcoe_debug_logging; +module_param_named(debug_logging, libfcoe_debug_logging, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); -#define FIP_DBG_LVL(level, fmt, args...) \ +#define LIBFCOE_LOGGING 0x01 /* General logging, not categorized */ +#define LIBFCOE_FIP_LOGGING 0x02 /* FIP logging */ + +#define LIBFCOE_CHECK_LOGGING(LEVEL, CMD) \ +do { \ + if (unlikely(libfcoe_debug_logging & LEVEL)) \ do { \ - if (fcoe_ctlr_debug >= (level)) \ - FC_DBG(fmt, ##args); \ - } while (0) + CMD; \ + } while (0); \ +} while (0); + +#define LIBFCOE_DBG(fmt, args...) \ + LIBFCOE_CHECK_LOGGING(LIBFCOE_LOGGING, \ + printk(KERN_INFO "libfcoe: " fmt, ##args);) -#define FIP_DBG(fmt, args...) FIP_DBG_LVL(1, fmt, ##args) +#define LIBFCOE_FIP_DBG(fmt, args...) \ + LIBFCOE_CHECK_LOGGING(LIBFCOE_FIP_LOGGING, \ + printk(KERN_INFO "fip: " fmt, ##args);) /* * Return non-zero if FCF fcoe_size has been validated. @@ -198,6 +211,8 @@ static void fcoe_ctlr_solicit(struct fcoe_ctlr *fip, struct fcoe_fcf *fcf) sol->fip.fip_subcode = FIP_SC_SOL; sol->fip.fip_dl_len = htons(sizeof(sol->desc) / FIP_BPW); sol->fip.fip_flags = htons(FIP_FL_FPMA); + if (fip->spma) + sol->fip.fip_flags |= htons(FIP_FL_SPMA); sol->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC; sol->desc.mac.fd_desc.fip_dlen = sizeof(sol->desc.mac) / FIP_BPW; @@ -213,7 +228,7 @@ static void fcoe_ctlr_solicit(struct fcoe_ctlr *fip, struct fcoe_fcf *fcf) sol->desc.size.fd_size = htons(fcoe_size); skb_put(skb, sizeof(*sol)); - skb->protocol = htons(ETH_P_802_3); + skb->protocol = htons(ETH_P_FIP); skb_reset_mac_header(skb); skb_reset_network_header(skb); fip->send(fip, skb); @@ -241,7 +256,7 @@ void fcoe_ctlr_link_up(struct fcoe_ctlr *fip) fip->last_link = 1; fip->link = 1; spin_unlock_bh(&fip->lock); - FIP_DBG("%s", "setting AUTO mode.\n"); + LIBFCOE_FIP_DBG("%s", "setting AUTO mode.\n"); fc_linkup(fip->lp); fcoe_ctlr_solicit(fip, NULL); } else @@ -350,6 +365,8 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip, int ports, u8 *sa) kal->fip.fip_dl_len = htons((sizeof(kal->mac) + ports * sizeof(*vn)) / FIP_BPW); kal->fip.fip_flags = htons(FIP_FL_FPMA); + if (fip->spma) + kal->fip.fip_flags |= htons(FIP_FL_SPMA); kal->mac.fd_desc.fip_dtype = FIP_DT_MAC; kal->mac.fd_desc.fip_dlen = sizeof(kal->mac) / FIP_BPW; @@ -365,7 +382,7 @@ static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip, int ports, u8 *sa) } skb_put(skb, len); - skb->protocol = htons(ETH_P_802_3); + skb->protocol = htons(ETH_P_FIP); skb_reset_mac_header(skb); skb_reset_network_header(skb); fip->send(fip, skb); @@ -413,6 +430,8 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, cap->fip.fip_subcode = FIP_SC_REQ; cap->fip.fip_dl_len = htons((dlen + sizeof(*mac)) / FIP_BPW); cap->fip.fip_flags = htons(FIP_FL_FPMA); + if (fip->spma) + cap->fip.fip_flags |= htons(FIP_FL_SPMA); cap->encaps.fd_desc.fip_dtype = dtype; cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW; @@ -421,10 +440,12 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, memset(mac, 0, sizeof(mac)); mac->fd_desc.fip_dtype = FIP_DT_MAC; mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW; - if (dtype != ELS_FLOGI) + if (dtype != FIP_DT_FLOGI) memcpy(mac->fd_mac, fip->data_src_addr, ETH_ALEN); + else if (fip->spma) + memcpy(mac->fd_mac, fip->ctl_src_addr, ETH_ALEN); - skb->protocol = htons(ETH_P_802_3); + skb->protocol = htons(ETH_P_FIP); skb_reset_mac_header(skb); skb_reset_network_header(skb); return 0; @@ -447,14 +468,10 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct sk_buff *skb) u16 old_xid; u8 op; - if (fip->state == FIP_ST_NON_FIP) - return 0; - fh = (struct fc_frame_header *)skb->data; op = *(u8 *)(fh + 1); - switch (op) { - case ELS_FLOGI: + if (op == ELS_FLOGI) { old_xid = fip->flogi_oxid; fip->flogi_oxid = ntohs(fh->fh_ox_id); if (fip->state == FIP_ST_AUTO) { @@ -466,6 +483,15 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct sk_buff *skb) fip->map_dest = 1; return 0; } + if (fip->state == FIP_ST_NON_FIP) + fip->map_dest = 1; + } + + if (fip->state == FIP_ST_NON_FIP) + return 0; + + switch (op) { + case ELS_FLOGI: op = FIP_DT_FLOGI; break; case ELS_FDISC: @@ -601,7 +627,8 @@ static int fcoe_ctlr_parse_adv(struct sk_buff *skb, struct fcoe_fcf *fcf) ((struct fip_mac_desc *)desc)->fd_mac, ETH_ALEN); if (!is_valid_ether_addr(fcf->fcf_mac)) { - FIP_DBG("invalid MAC addr in FIP adv\n"); + LIBFCOE_FIP_DBG("Invalid MAC address " + "in FIP adv\n"); return -EINVAL; } break; @@ -634,8 +661,8 @@ static int fcoe_ctlr_parse_adv(struct sk_buff *skb, struct fcoe_fcf *fcf) case FIP_DT_LOGO: case FIP_DT_ELP: default: - FIP_DBG("unexpected descriptor type %x in FIP adv\n", - desc->fip_dtype); + LIBFCOE_FIP_DBG("unexpected descriptor type %x " + "in FIP adv\n", desc->fip_dtype); /* standard says ignore unknown descriptors >= 128 */ if (desc->fip_dtype < FIP_DT_VENDOR_BASE) return -EINVAL; @@ -651,8 +678,8 @@ static int fcoe_ctlr_parse_adv(struct sk_buff *skb, struct fcoe_fcf *fcf) return 0; len_err: - FIP_DBG("FIP length error in descriptor type %x len %zu\n", - desc->fip_dtype, dlen); + LIBFCOE_FIP_DBG("FIP length error in descriptor type %x len %zu\n", + desc->fip_dtype, dlen); return -EINVAL; } @@ -715,9 +742,10 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb) } mtu_valid = fcoe_ctlr_mtu_valid(fcf); fcf->time = jiffies; - FIP_DBG_LVL(found ? 2 : 1, "%s FCF for fab %llx map %x val %d\n", - found ? "old" : "new", - fcf->fabric_name, fcf->fc_map, mtu_valid); + if (!found) { + LIBFCOE_FIP_DBG("New FCF for fab %llx map %x val %d\n", + fcf->fabric_name, fcf->fc_map, mtu_valid); + } /* * If this advertisement is not solicited and our max receive size @@ -794,7 +822,8 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) ((struct fip_mac_desc *)desc)->fd_mac, ETH_ALEN); if (!is_valid_ether_addr(granted_mac)) { - FIP_DBG("invalid MAC addrs in FIP ELS\n"); + LIBFCOE_FIP_DBG("Invalid MAC address " + "in FIP ELS\n"); goto drop; } break; @@ -812,8 +841,8 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) els_dtype = desc->fip_dtype; break; default: - FIP_DBG("unexpected descriptor type %x " - "in FIP adv\n", desc->fip_dtype); + LIBFCOE_FIP_DBG("unexpected descriptor type %x " + "in FIP adv\n", desc->fip_dtype); /* standard says ignore unknown descriptors >= 128 */ if (desc->fip_dtype < FIP_DT_VENDOR_BASE) goto drop; @@ -854,8 +883,8 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) return; len_err: - FIP_DBG("FIP length error in descriptor type %x len %zu\n", - desc->fip_dtype, dlen); + LIBFCOE_FIP_DBG("FIP length error in descriptor type %x len %zu\n", + desc->fip_dtype, dlen); drop: kfree_skb(skb); } @@ -881,7 +910,7 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip, struct fc_lport *lp = fip->lp; u32 desc_mask; - FIP_DBG("Clear Virtual Link received\n"); + LIBFCOE_FIP_DBG("Clear Virtual Link received\n"); if (!fcf) return; if (!fcf || !fc_host_port_id(lp->host)) @@ -939,9 +968,9 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip, * reset only if all required descriptors were present and valid. */ if (desc_mask) { - FIP_DBG("missing descriptors mask %x\n", desc_mask); + LIBFCOE_FIP_DBG("missing descriptors mask %x\n", desc_mask); } else { - FIP_DBG("performing Clear Virtual Link\n"); + LIBFCOE_FIP_DBG("performing Clear Virtual Link\n"); fcoe_ctlr_reset(fip, FIP_ST_ENABLED); } } @@ -989,10 +1018,6 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb) op = ntohs(fiph->fip_op); sub = fiph->fip_subcode; - FIP_DBG_LVL(2, "ver %x op %x/%x dl %x fl %x\n", - FIP_VER_DECAPS(fiph->fip_ver), op, sub, - ntohs(fiph->fip_dl_len), ntohs(fiph->fip_flags)); - if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER) goto drop; if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len) @@ -1004,7 +1029,7 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb) fip->map_dest = 0; fip->state = FIP_ST_ENABLED; state = FIP_ST_ENABLED; - FIP_DBG("using FIP mode\n"); + LIBFCOE_FIP_DBG("Using FIP mode\n"); } spin_unlock_bh(&fip->lock); if (state != FIP_ST_ENABLED) @@ -1039,14 +1064,15 @@ static void fcoe_ctlr_select(struct fcoe_ctlr *fip) struct fcoe_fcf *best = NULL; list_for_each_entry(fcf, &fip->fcfs, list) { - FIP_DBG("consider FCF for fab %llx VFID %d map %x val %d\n", - fcf->fabric_name, fcf->vfid, - fcf->fc_map, fcoe_ctlr_mtu_valid(fcf)); + LIBFCOE_FIP_DBG("consider FCF for fab %llx VFID %d map %x " + "val %d\n", fcf->fabric_name, fcf->vfid, + fcf->fc_map, fcoe_ctlr_mtu_valid(fcf)); if (!fcoe_ctlr_fcf_usable(fcf)) { - FIP_DBG("FCF for fab %llx map %x %svalid %savailable\n", - fcf->fabric_name, fcf->fc_map, - (fcf->flags & FIP_FL_SOL) ? "" : "in", - (fcf->flags & FIP_FL_AVAIL) ? "" : "un"); + LIBFCOE_FIP_DBG("FCF for fab %llx map %x %svalid " + "%savailable\n", fcf->fabric_name, + fcf->fc_map, (fcf->flags & FIP_FL_SOL) + ? "" : "in", (fcf->flags & FIP_FL_AVAIL) + ? "" : "un"); continue; } if (!best) { @@ -1056,7 +1082,8 @@ static void fcoe_ctlr_select(struct fcoe_ctlr *fip) if (fcf->fabric_name != best->fabric_name || fcf->vfid != best->vfid || fcf->fc_map != best->fc_map) { - FIP_DBG("conflicting fabric, VFID, or FC-MAP\n"); + LIBFCOE_FIP_DBG("Conflicting fabric, VFID, " + "or FC-MAP\n"); return; } if (fcf->pri < best->pri) @@ -1100,7 +1127,7 @@ static void fcoe_ctlr_timeout(unsigned long arg) if (sel != fcf) { fcf = sel; /* the old FCF may have been freed */ if (sel) { - printk(KERN_INFO "host%d: FIP selected " + printk(KERN_INFO "libfcoe: host%d: FIP selected " "Fibre-Channel Forwarder MAC %s\n", fip->lp->host->host_no, print_mac(buf, sel->fcf_mac)); @@ -1110,7 +1137,7 @@ static void fcoe_ctlr_timeout(unsigned long arg) fip->ctlr_ka_time = jiffies + sel->fka_period; fip->link = 1; } else { - printk(KERN_NOTICE "host%d: " + printk(KERN_NOTICE "libfcoe: host%d: " "FIP Fibre-Channel Forwarder timed out. " "Starting FCF discovery.\n", fip->lp->host->host_no); @@ -1234,7 +1261,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_frame *fp, u8 *sa) return -EINVAL; } fip->state = FIP_ST_NON_FIP; - FIP_DBG("received FLOGI LS_ACC using non-FIP mode\n"); + LIBFCOE_FIP_DBG("received FLOGI LS_ACC using non-FIP mode\n"); /* * FLOGI accepted. @@ -1263,7 +1290,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_frame *fp, u8 *sa) memcpy(fip->dest_addr, sa, ETH_ALEN); fip->map_dest = 0; if (fip->state == FIP_ST_NON_FIP) - FIP_DBG("received FLOGI REQ, " + LIBFCOE_FIP_DBG("received FLOGI REQ, " "using non-FIP mode\n"); fip->state = FIP_ST_NON_FIP; } |