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path: root/drivers/scsi/fcoe/fcoe.c
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Diffstat (limited to 'drivers/scsi/fcoe/fcoe.c')
-rw-r--r--drivers/scsi/fcoe/fcoe.c59
1 files changed, 22 insertions, 37 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 94e1e3189773..03e1926f40b5 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -57,7 +57,7 @@ DEFINE_RWLOCK(fcoe_hostlist_lock);
57DEFINE_TIMER(fcoe_timer, NULL, 0, 0); 57DEFINE_TIMER(fcoe_timer, NULL, 0, 0);
58DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); 58DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu);
59 59
60/* Function Prototyes */ 60/* Function Prototypes */
61static int fcoe_reset(struct Scsi_Host *shost); 61static int fcoe_reset(struct Scsi_Host *shost);
62static int fcoe_xmit(struct fc_lport *, struct fc_frame *); 62static int fcoe_xmit(struct fc_lport *, struct fc_frame *);
63static int fcoe_rcv(struct sk_buff *, struct net_device *, 63static int fcoe_rcv(struct sk_buff *, struct net_device *,
@@ -138,7 +138,6 @@ static struct scsi_host_template fcoe_shost_template = {
138/** 138/**
139 * fcoe_lport_config() - sets up the fc_lport 139 * fcoe_lport_config() - sets up the fc_lport
140 * @lp: ptr to the fc_lport 140 * @lp: ptr to the fc_lport
141 * @shost: ptr to the parent scsi host
142 * 141 *
143 * Returns: 0 for success 142 * Returns: 0 for success
144 */ 143 */
@@ -256,6 +255,7 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev)
256 rtnl_lock(); 255 rtnl_lock();
257 memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); 256 memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);
258 dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN); 257 dev_unicast_add(fc->real_dev, flogi_maddr, ETH_ALEN);
258 dev_mc_add(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
259 rtnl_unlock(); 259 rtnl_unlock();
260 260
261 /* 261 /*
@@ -380,7 +380,7 @@ static int fcoe_if_destroy(struct net_device *netdev)
380 dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); 380 dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
381 rtnl_unlock(); 381 rtnl_unlock();
382 382
383 /* Free the per-CPU revieve threads */ 383 /* Free the per-CPU receive threads */
384 fcoe_percpu_clean(lp); 384 fcoe_percpu_clean(lp);
385 385
386 /* Free existing skbs */ 386 /* Free existing skbs */
@@ -720,7 +720,7 @@ static void fcoe_percpu_thread_destroy(unsigned int cpu)
720 } 720 }
721#else 721#else
722 /* 722 /*
723 * This a non-SMP scenario where the singluar Rx thread is 723 * This a non-SMP scenario where the singular Rx thread is
724 * being removed. Free all skbs and stop the thread. 724 * being removed. Free all skbs and stop the thread.
725 */ 725 */
726 spin_lock_bh(&p->fcoe_rx_list.lock); 726 spin_lock_bh(&p->fcoe_rx_list.lock);
@@ -777,7 +777,7 @@ static struct notifier_block fcoe_cpu_notifier = {
777 * @skb: the receive skb 777 * @skb: the receive skb
778 * @dev: associated net device 778 * @dev: associated net device
779 * @ptype: context 779 * @ptype: context
780 * @odldev: last device 780 * @olddev: last device
781 * 781 *
782 * this function will receive the packet and build fc frame and pass it up 782 * this function will receive the packet and build fc frame and pass it up
783 * 783 *
@@ -884,7 +884,6 @@ err2:
884 kfree_skb(skb); 884 kfree_skb(skb);
885 return -1; 885 return -1;
886} 886}
887EXPORT_SYMBOL_GPL(fcoe_rcv);
888 887
889/** 888/**
890 * fcoe_start_io() - pass to netdev to start xmit for fcoe 889 * fcoe_start_io() - pass to netdev to start xmit for fcoe
@@ -905,7 +904,7 @@ static inline int fcoe_start_io(struct sk_buff *skb)
905} 904}
906 905
907/** 906/**
908 * fcoe_get_paged_crc_eof() - in case we need alloc a page for crc_eof 907 * fcoe_get_paged_crc_eof() - in case we need to alloc a page for crc_eof
909 * @skb: the skb to be xmitted 908 * @skb: the skb to be xmitted
910 * @tlen: total len 909 * @tlen: total len
911 * 910 *
@@ -947,7 +946,7 @@ static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen)
947 946
948/** 947/**
949 * fcoe_fc_crc() - calculates FC CRC in this fcoe skb 948 * fcoe_fc_crc() - calculates FC CRC in this fcoe skb
950 * @fp: the fc_frame containg data to be checksummed 949 * @fp: the fc_frame containing data to be checksummed
951 * 950 *
952 * This uses crc32() to calculate the crc for fc frame 951 * This uses crc32() to calculate the crc for fc frame
953 * Return : 32 bit crc 952 * Return : 32 bit crc
@@ -1011,7 +1010,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
1011 wlen = skb->len / FCOE_WORD_TO_BYTE; 1010 wlen = skb->len / FCOE_WORD_TO_BYTE;
1012 1011
1013 if (!lp->link_up) { 1012 if (!lp->link_up) {
1014 kfree(skb); 1013 kfree_skb(skb);
1015 return 0; 1014 return 0;
1016 } 1015 }
1017 1016
@@ -1062,7 +1061,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
1062 cp = NULL; 1061 cp = NULL;
1063 } 1062 }
1064 1063
1065 /* adjust skb netowrk/transport offsets to match mac/fcoe/fc */ 1064 /* adjust skb network/transport offsets to match mac/fcoe/fc */
1066 skb_push(skb, elen + hlen); 1065 skb_push(skb, elen + hlen);
1067 skb_reset_mac_header(skb); 1066 skb_reset_mac_header(skb);
1068 skb_reset_network_header(skb); 1067 skb_reset_network_header(skb);
@@ -1123,7 +1122,6 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
1123 1122
1124 return 0; 1123 return 0;
1125} 1124}
1126EXPORT_SYMBOL_GPL(fcoe_xmit);
1127 1125
1128/** 1126/**
1129 * fcoe_percpu_receive_thread() - recv thread per cpu 1127 * fcoe_percpu_receive_thread() - recv thread per cpu
@@ -1296,17 +1294,16 @@ void fcoe_watchdog(ulong vp)
1296 1294
1297 1295
1298/** 1296/**
1299 * fcoe_check_wait_queue() - put the skb into fcoe pending xmit queue 1297 * fcoe_check_wait_queue() - attempt to clear the transmit backlog
1300 * @lp: the fc_port for this skb 1298 * @lp: the fc_lport
1301 * @skb: the associated skb to be xmitted
1302 * 1299 *
1303 * This empties the wait_queue, dequeue the head of the wait_queue queue 1300 * This empties the wait_queue, dequeue the head of the wait_queue queue
1304 * and calls fcoe_start_io() for each packet, if all skb have been 1301 * and calls fcoe_start_io() for each packet, if all skb have been
1305 * transmitted, return qlen or -1 if a error occurs, then restore 1302 * transmitted, return qlen or -1 if a error occurs, then restore
1306 * wait_queue and try again later. 1303 * wait_queue and try again later.
1307 * 1304 *
1308 * The wait_queue is used when the skb transmit fails. skb will go 1305 * The wait_queue is used when the skb transmit fails. skb will go
1309 * in the wait_queue which will be emptied by the time function OR 1306 * in the wait_queue which will be emptied by the timer function or
1310 * by the next skb transmit. 1307 * by the next skb transmit.
1311 * 1308 *
1312 * Returns: 0 for success 1309 * Returns: 0 for success
@@ -1355,10 +1352,6 @@ out:
1355 */ 1352 */
1356static void fcoe_dev_setup() 1353static void fcoe_dev_setup()
1357{ 1354{
1358 /*
1359 * here setup a interface specific wd time to
1360 * monitor the link state
1361 */
1362 register_netdevice_notifier(&fcoe_notifier); 1355 register_netdevice_notifier(&fcoe_notifier);
1363} 1356}
1364 1357
@@ -1437,10 +1430,9 @@ out:
1437 1430
1438/** 1431/**
1439 * fcoe_if_to_netdev() - parse a name buffer to get netdev 1432 * fcoe_if_to_netdev() - parse a name buffer to get netdev
1440 * @ifname: fixed array for output parsed ifname
1441 * @buffer: incoming buffer to be copied 1433 * @buffer: incoming buffer to be copied
1442 * 1434 *
1443 * Returns: NULL or ptr to netdeive 1435 * Returns: NULL or ptr to net_device
1444 */ 1436 */
1445static struct net_device *fcoe_if_to_netdev(const char *buffer) 1437static struct net_device *fcoe_if_to_netdev(const char *buffer)
1446{ 1438{
@@ -1458,7 +1450,7 @@ static struct net_device *fcoe_if_to_netdev(const char *buffer)
1458} 1450}
1459 1451
1460/** 1452/**
1461 * fcoe_netdev_to_module_owner() - finds out the nic drive moddule of the netdev 1453 * fcoe_netdev_to_module_owner() - finds out the driver module of the netdev
1462 * @netdev: the target netdev 1454 * @netdev: the target netdev
1463 * 1455 *
1464 * Returns: ptr to the struct module, NULL for failure 1456 * Returns: ptr to the struct module, NULL for failure
@@ -1488,7 +1480,7 @@ fcoe_netdev_to_module_owner(const struct net_device *netdev)
1488 * Holds the Ethernet driver module by try_module_get() for 1480 * Holds the Ethernet driver module by try_module_get() for
1489 * the corresponding netdev. 1481 * the corresponding netdev.
1490 * 1482 *
1491 * Returns: 0 for succsss 1483 * Returns: 0 for success
1492 */ 1484 */
1493static int fcoe_ethdrv_get(const struct net_device *netdev) 1485static int fcoe_ethdrv_get(const struct net_device *netdev)
1494{ 1486{
@@ -1510,7 +1502,7 @@ static int fcoe_ethdrv_get(const struct net_device *netdev)
1510 * Releases the Ethernet driver module by module_put for 1502 * Releases the Ethernet driver module by module_put for
1511 * the corresponding netdev. 1503 * the corresponding netdev.
1512 * 1504 *
1513 * Returns: 0 for succsss 1505 * Returns: 0 for success
1514 */ 1506 */
1515static int fcoe_ethdrv_put(const struct net_device *netdev) 1507static int fcoe_ethdrv_put(const struct net_device *netdev)
1516{ 1508{
@@ -1528,7 +1520,7 @@ static int fcoe_ethdrv_put(const struct net_device *netdev)
1528 1520
1529/** 1521/**
1530 * fcoe_destroy() - handles the destroy from sysfs 1522 * fcoe_destroy() - handles the destroy from sysfs
1531 * @buffer: expcted to be a eth if name 1523 * @buffer: expected to be an eth if name
1532 * @kp: associated kernel param 1524 * @kp: associated kernel param
1533 * 1525 *
1534 * Returns: 0 for success 1526 * Returns: 0 for success
@@ -1565,7 +1557,7 @@ out_nodev:
1565 1557
1566/** 1558/**
1567 * fcoe_create() - Handles the create call from sysfs 1559 * fcoe_create() - Handles the create call from sysfs
1568 * @buffer: expcted to be a eth if name 1560 * @buffer: expected to be an eth if name
1569 * @kp: associated kernel param 1561 * @kp: associated kernel param
1570 * 1562 *
1571 * Returns: 0 for success 1563 * Returns: 0 for success
@@ -1652,7 +1644,6 @@ int fcoe_link_ok(struct fc_lport *lp)
1652 1644
1653 return rc; 1645 return rc;
1654} 1646}
1655EXPORT_SYMBOL_GPL(fcoe_link_ok);
1656 1647
1657/** 1648/**
1658 * fcoe_percpu_clean() - Clear the pending skbs for an lport 1649 * fcoe_percpu_clean() - Clear the pending skbs for an lport
@@ -1684,7 +1675,6 @@ void fcoe_percpu_clean(struct fc_lport *lp)
1684 spin_unlock_bh(&pp->fcoe_rx_list.lock); 1675 spin_unlock_bh(&pp->fcoe_rx_list.lock);
1685 } 1676 }
1686} 1677}
1687EXPORT_SYMBOL_GPL(fcoe_percpu_clean);
1688 1678
1689/** 1679/**
1690 * fcoe_clean_pending_queue() - Dequeue a skb and free it 1680 * fcoe_clean_pending_queue() - Dequeue a skb and free it
@@ -1705,7 +1695,6 @@ void fcoe_clean_pending_queue(struct fc_lport *lp)
1705 } 1695 }
1706 spin_unlock_bh(&fc->fcoe_pending_queue.lock); 1696 spin_unlock_bh(&fc->fcoe_pending_queue.lock);
1707} 1697}
1708EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
1709 1698
1710/** 1699/**
1711 * fcoe_reset() - Resets the fcoe 1700 * fcoe_reset() - Resets the fcoe
@@ -1719,11 +1708,10 @@ int fcoe_reset(struct Scsi_Host *shost)
1719 fc_lport_reset(lport); 1708 fc_lport_reset(lport);
1720 return 0; 1709 return 0;
1721} 1710}
1722EXPORT_SYMBOL_GPL(fcoe_reset);
1723 1711
1724/** 1712/**
1725 * fcoe_hostlist_lookup_softc() - find the corresponding lport by a given device 1713 * fcoe_hostlist_lookup_softc() - find the corresponding lport by a given device
1726 * @device: this is currently ptr to net_device 1714 * @dev: this is currently ptr to net_device
1727 * 1715 *
1728 * Returns: NULL or the located fcoe_softc 1716 * Returns: NULL or the located fcoe_softc
1729 */ 1717 */
@@ -1757,11 +1745,10 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
1757 1745
1758 return (fc) ? fc->ctlr.lp : NULL; 1746 return (fc) ? fc->ctlr.lp : NULL;
1759} 1747}
1760EXPORT_SYMBOL_GPL(fcoe_hostlist_lookup);
1761 1748
1762/** 1749/**
1763 * fcoe_hostlist_add() - Add a lport to lports list 1750 * fcoe_hostlist_add() - Add a lport to lports list
1764 * @lp: ptr to the fc_lport to badded 1751 * @lp: ptr to the fc_lport to be added
1765 * 1752 *
1766 * Returns: 0 for success 1753 * Returns: 0 for success
1767 */ 1754 */
@@ -1778,11 +1765,10 @@ int fcoe_hostlist_add(const struct fc_lport *lp)
1778 } 1765 }
1779 return 0; 1766 return 0;
1780} 1767}
1781EXPORT_SYMBOL_GPL(fcoe_hostlist_add);
1782 1768
1783/** 1769/**
1784 * fcoe_hostlist_remove() - remove a lport from lports list 1770 * fcoe_hostlist_remove() - remove a lport from lports list
1785 * @lp: ptr to the fc_lport to badded 1771 * @lp: ptr to the fc_lport to be removed
1786 * 1772 *
1787 * Returns: 0 for success 1773 * Returns: 0 for success
1788 */ 1774 */
@@ -1798,7 +1784,6 @@ int fcoe_hostlist_remove(const struct fc_lport *lp)
1798 1784
1799 return 0; 1785 return 0;
1800} 1786}
1801EXPORT_SYMBOL_GPL(fcoe_hostlist_remove);
1802 1787
1803/** 1788/**
1804 * fcoe_init() - fcoe module loading initialization 1789 * fcoe_init() - fcoe module loading initialization