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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 12:25:38 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 12:25:38 +0900
commit0d522ee7499e4abe7189b2f1728e838959b8ddde (patch)
tree094f60e8bdb0083b58a43a0decbca59443a66e39 /drivers/scsi/fcoe
parent5eea9be8b2478dbc2f9fb1cd6228a90e8dba804e (diff)
parent323f6226a816f0b01514d25fba5529e0e68636c3 (diff)
Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull first round of SCSI updates from James Bottomley: "This patch set is driver updates for qla4xxx, scsi_debug, pm80xx, fcoe/libfc, eas2r, lpfc, be2iscsi and megaraid_sas plus some assorted bug fixes and cleanups" * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (106 commits) [SCSI] scsi_error: Escalate to LUN reset if abort fails [SCSI] Add 'eh_deadline' to limit SCSI EH runtime [SCSI] remove check for 'resetting' [SCSI] dc395: Move 'last_reset' into internal host structure [SCSI] tmscsim: Move 'last_reset' into host structure [SCSI] advansys: Remove 'last_reset' references [SCSI] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in reset [SCSI] dpt_i2o: Remove DPTI_STATE_IOCTL [SCSI] megaraid_sas: Fix synchronization problem between sysPD IO path and AEN path [SCSI] lpfc: Fix typo on NULL assignment [SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning [SCSI] scsi_dh_alua: ALUA check sense should retry device internal reset unit attention [SCSI] esas2r: Cleanup snprinf formatting of firmware version [SCSI] esas2r: Remove superfluous mask of pcie_cap_reg [SCSI] esas2r: Fixes for big-endian platforms [SCSI] esas2r: Directly call kernel functions for atomic bit operations [SCSI] lpfc 8.3.43: Update lpfc version to driver version 8.3.43 [SCSI] lpfc 8.3.43: Fixed not processing task management IOCB response status [SCSI] lpfc 8.3.43: Fixed spinlock hang. [SCSI] lpfc 8.3.43: Fixed invalid Total_Data_Placed value received for els and ct command responses ...
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r--drivers/scsi/fcoe/fcoe.c25
-rw-r--r--drivers/scsi/fcoe/fcoe_ctlr.c148
-rw-r--r--drivers/scsi/fcoe/fcoe_sysfs.c14
3 files changed, 118 insertions, 69 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 07453bbf05e..f3170008ae7 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -408,6 +408,7 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev,
}
ctlr = fcoe_ctlr_device_priv(ctlr_dev);
+ ctlr->cdev = ctlr_dev;
fcoe = fcoe_ctlr_priv(ctlr);
dev_hold(netdev);
@@ -1440,22 +1441,28 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
ctlr = fcoe_to_ctlr(fcoe);
lport = ctlr->lp;
if (unlikely(!lport)) {
- FCOE_NETDEV_DBG(netdev, "Cannot find hba structure");
+ FCOE_NETDEV_DBG(netdev, "Cannot find hba structure\n");
goto err2;
}
if (!lport->link_up)
goto err2;
- FCOE_NETDEV_DBG(netdev, "skb_info: len:%d data_len:%d head:%p "
- "data:%p tail:%p end:%p sum:%d dev:%s",
+ FCOE_NETDEV_DBG(netdev,
+ "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
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>");
+
+ skb = skb_share_check(skb, GFP_ATOMIC);
+
+ if (skb == NULL)
+ return NET_RX_DROP;
+
eh = eth_hdr(skb);
if (is_fip_mode(ctlr) &&
- compare_ether_addr(eh->h_source, ctlr->dest_addr)) {
+ !ether_addr_equal(eh->h_source, ctlr->dest_addr)) {
FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n",
eh->h_source);
goto err;
@@ -1540,13 +1547,13 @@ static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
wake_up_process(fps->thread);
spin_unlock(&fps->fcoe_rx_list.lock);
- return 0;
+ return NET_RX_SUCCESS;
err:
per_cpu_ptr(lport->stats, get_cpu())->ErrorFrames++;
put_cpu();
err2:
kfree_skb(skb);
- return -1;
+ return NET_RX_DROP;
}
/**
@@ -1788,13 +1795,13 @@ static void fcoe_recv_frame(struct sk_buff *skb)
lport = fr->fr_dev;
if (unlikely(!lport)) {
if (skb->destructor != fcoe_percpu_flush_done)
- FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb");
+ FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb\n");
kfree_skb(skb);
return;
}
- FCOE_NETDEV_DBG(skb->dev, "skb_info: len:%d data_len:%d "
- "head:%p data:%p tail:%p end:%p sum:%d dev:%s",
+ FCOE_NETDEV_DBG(skb->dev,
+ "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n",
skb->len, skb->data_len,
skb->head, skb->data, skb_tail_pointer(skb),
skb_end_pointer(skb), skb->csum,
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index 203415e0251..34a1b1f333b 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -160,74 +160,113 @@ void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_state mode)
}
EXPORT_SYMBOL(fcoe_ctlr_init);
+/**
+ * fcoe_sysfs_fcf_add() - Add a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
+ * @new: The newly discovered FCF
+ *
+ * Called with fip->ctlr_mutex held
+ */
static int fcoe_sysfs_fcf_add(struct fcoe_fcf *new)
{
struct fcoe_ctlr *fip = new->fip;
- struct fcoe_ctlr_device *ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip);
- struct fcoe_fcf_device temp, *fcf_dev;
- int rc = 0;
+ struct fcoe_ctlr_device *ctlr_dev;
+ struct fcoe_fcf_device *temp, *fcf_dev;
+ int rc = -ENOMEM;
LIBFCOE_FIP_DBG(fip, "New FCF fab %16.16llx mac %pM\n",
new->fabric_name, new->fcf_mac);
- mutex_lock(&ctlr_dev->lock);
-
- temp.fabric_name = new->fabric_name;
- temp.switch_name = new->switch_name;
- temp.fc_map = new->fc_map;
- temp.vfid = new->vfid;
- memcpy(temp.mac, new->fcf_mac, ETH_ALEN);
- temp.priority = new->pri;
- temp.fka_period = new->fka_period;
- temp.selected = 0; /* default to unselected */
-
- fcf_dev = fcoe_fcf_device_add(ctlr_dev, &temp);
- if (unlikely(!fcf_dev)) {
- rc = -ENOMEM;
+ temp = kzalloc(sizeof(*temp), GFP_KERNEL);
+ if (!temp)
goto out;
- }
+
+ temp->fabric_name = new->fabric_name;
+ temp->switch_name = new->switch_name;
+ temp->fc_map = new->fc_map;
+ temp->vfid = new->vfid;
+ memcpy(temp->mac, new->fcf_mac, ETH_ALEN);
+ temp->priority = new->pri;
+ temp->fka_period = new->fka_period;
+ temp->selected = 0; /* default to unselected */
/*
- * The fcoe_sysfs layer can return a CONNECTED fcf that
- * has a priv (fcf was never deleted) or a CONNECTED fcf
- * that doesn't have a priv (fcf was deleted). However,
- * libfcoe will always delete FCFs before trying to add
- * them. This is ensured because both recv_adv and
- * age_fcfs are protected by the the fcoe_ctlr's mutex.
- * This means that we should never get a FCF with a
- * non-NULL priv pointer.
+ * If ctlr_dev doesn't exist then it means we're a libfcoe user
+ * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device.
+ * fnic would be an example of a driver with this behavior. In this
+ * case we want to add the fcoe_fcf to the fcoe_ctlr list, but we
+ * don't want to make sysfs changes.
*/
- BUG_ON(fcf_dev->priv);
- fcf_dev->priv = new;
- new->fcf_dev = fcf_dev;
+ ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip);
+ if (ctlr_dev) {
+ mutex_lock(&ctlr_dev->lock);
+ fcf_dev = fcoe_fcf_device_add(ctlr_dev, temp);
+ if (unlikely(!fcf_dev)) {
+ rc = -ENOMEM;
+ mutex_unlock(&ctlr_dev->lock);
+ goto out;
+ }
+
+ /*
+ * The fcoe_sysfs layer can return a CONNECTED fcf that
+ * has a priv (fcf was never deleted) or a CONNECTED fcf
+ * that doesn't have a priv (fcf was deleted). However,
+ * libfcoe will always delete FCFs before trying to add
+ * them. This is ensured because both recv_adv and
+ * age_fcfs are protected by the the fcoe_ctlr's mutex.
+ * This means that we should never get a FCF with a
+ * non-NULL priv pointer.
+ */
+ BUG_ON(fcf_dev->priv);
+
+ fcf_dev->priv = new;
+ new->fcf_dev = fcf_dev;
+ mutex_unlock(&ctlr_dev->lock);
+ }
list_add(&new->list, &fip->fcfs);
fip->fcf_count++;
+ rc = 0;
out:
- mutex_unlock(&ctlr_dev->lock);
+ kfree(temp);
return rc;
}
+/**
+ * fcoe_sysfs_fcf_del() - Remove a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
+ * @new: The FCF to be removed
+ *
+ * Called with fip->ctlr_mutex held
+ */
static void fcoe_sysfs_fcf_del(struct fcoe_fcf *new)
{
struct fcoe_ctlr *fip = new->fip;
- struct fcoe_ctlr_device *ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip);
+ struct fcoe_ctlr_device *cdev;
struct fcoe_fcf_device *fcf_dev;
list_del(&new->list);
fip->fcf_count--;
- mutex_lock(&ctlr_dev->lock);
-
- fcf_dev = fcoe_fcf_to_fcf_dev(new);
- WARN_ON(!fcf_dev);
- new->fcf_dev = NULL;
- fcoe_fcf_device_delete(fcf_dev);
- kfree(new);
-
- mutex_unlock(&ctlr_dev->lock);
+ /*
+ * If ctlr_dev doesn't exist then it means we're a libfcoe user
+ * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device
+ * or a fcoe_fcf_device.
+ *
+ * fnic would be an example of a driver with this behavior. In this
+ * case we want to remove the fcoe_fcf from the fcoe_ctlr list (above),
+ * but we don't want to make sysfs changes.
+ */
+ cdev = fcoe_ctlr_to_ctlr_dev(fip);
+ if (cdev) {
+ mutex_lock(&cdev->lock);
+ fcf_dev = fcoe_fcf_to_fcf_dev(new);
+ WARN_ON(!fcf_dev);
+ new->fcf_dev = NULL;
+ fcoe_fcf_device_delete(fcf_dev);
+ kfree(new);
+ mutex_unlock(&cdev->lock);
+ }
}
/**
@@ -300,7 +339,7 @@ static void fcoe_ctlr_announce(struct fcoe_ctlr *fip)
spin_unlock_bh(&fip->ctlr_lock);
sel = fip->sel_fcf;
- if (sel && !compare_ether_addr(sel->fcf_mac, fip->dest_addr))
+ if (sel && ether_addr_equal(sel->fcf_mac, fip->dest_addr))
goto unlock;
if (!is_zero_ether_addr(fip->dest_addr)) {
printk(KERN_NOTICE "libfcoe: host%d: "
@@ -1000,7 +1039,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
if (fcf->switch_name == new.switch_name &&
fcf->fabric_name == new.fabric_name &&
fcf->fc_map == new.fc_map &&
- compare_ether_addr(fcf->fcf_mac, new.fcf_mac) == 0) {
+ ether_addr_equal(fcf->fcf_mac, new.fcf_mac)) {
found = 1;
break;
}
@@ -1340,7 +1379,7 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
mp = (struct fip_mac_desc *)desc;
if (dlen < sizeof(*mp))
goto err;
- if (compare_ether_addr(mp->fd_mac, fcf->fcf_mac))
+ if (!ether_addr_equal(mp->fd_mac, fcf->fcf_mac))
goto err;
desc_mask &= ~BIT(FIP_DT_MAC);
break;
@@ -1418,8 +1457,8 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
* 'port_id' is already validated, check MAC address and
* wwpn
*/
- if (compare_ether_addr(fip->get_src_addr(vn_port),
- vp->fd_mac) != 0 ||
+ if (!ether_addr_equal(fip->get_src_addr(vn_port),
+ vp->fd_mac) ||
get_unaligned_be64(&vp->fd_wwpn) !=
vn_port->wwpn)
continue;
@@ -1453,6 +1492,9 @@ err:
*/
void fcoe_ctlr_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
{
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return;
skb_queue_tail(&fip->fip_recv_list, skb);
schedule_work(&fip->recv_work);
}
@@ -1479,12 +1521,12 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
goto drop;
eh = eth_hdr(skb);
if (fip->mode == FIP_MODE_VN2VN) {
- if (compare_ether_addr(eh->h_dest, fip->ctl_src_addr) &&
- compare_ether_addr(eh->h_dest, fcoe_all_vn2vn) &&
- compare_ether_addr(eh->h_dest, fcoe_all_p2p))
+ if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
+ !ether_addr_equal(eh->h_dest, fcoe_all_vn2vn) &&
+ !ether_addr_equal(eh->h_dest, fcoe_all_p2p))
goto drop;
- } else if (compare_ether_addr(eh->h_dest, fip->ctl_src_addr) &&
- compare_ether_addr(eh->h_dest, fcoe_all_enode))
+ } else if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
+ !ether_addr_equal(eh->h_dest, fcoe_all_enode))
goto drop;
fiph = (struct fip_header *)skb->data;
op = ntohs(fiph->fip_op);
@@ -1856,7 +1898,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport,
* address_mode flag to use FC_OUI-based Ethernet DA.
* Otherwise we use the FCoE gateway addr
*/
- if (!compare_ether_addr(sa, (u8[6])FC_FCOE_FLOGI_MAC)) {
+ if (ether_addr_equal(sa, (u8[6])FC_FCOE_FLOGI_MAC)) {
fcoe_ctlr_map_dest(fip);
} else {
memcpy(fip->dest_addr, sa, ETH_ALEN);
@@ -2825,8 +2867,8 @@ unlock:
* disabled, so that should ensure that this routine is only called
* when nothing is happening.
*/
-void fcoe_ctlr_mode_set(struct fc_lport *lport, struct fcoe_ctlr *fip,
- enum fip_state fip_mode)
+static void fcoe_ctlr_mode_set(struct fc_lport *lport, struct fcoe_ctlr *fip,
+ enum fip_state fip_mode)
{
void *priv;
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index 1f4f22fe828..045c4e11ee5 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -300,29 +300,29 @@ static ssize_t store_ctlr_mode(struct device *dev,
switch (ctlr->enabled) {
case FCOE_CTLR_ENABLED:
- LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.");
+ LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.\n");
return -EBUSY;
case FCOE_CTLR_DISABLED:
if (!ctlr->f->set_fcoe_ctlr_mode) {
LIBFCOE_SYSFS_DBG(ctlr,
- "Mode change not supported by LLD.");
+ "Mode change not supported by LLD.\n");
return -ENOTSUPP;
}
ctlr->mode = fcoe_parse_mode(mode);
if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) {
- LIBFCOE_SYSFS_DBG(ctlr,
- "Unknown mode %s provided.", buf);
+ LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n",
+ buf);
return -EINVAL;
}
ctlr->f->set_fcoe_ctlr_mode(ctlr);
- LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.", buf);
+ LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n", buf);
return count;
case FCOE_CTLR_UNUSED:
default:
- LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.");
+ LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n");
return -ENOTSUPP;
};
}
@@ -657,7 +657,7 @@ static int fcoe_fcf_device_match(struct fcoe_fcf_device *new,
if (new->switch_name == old->switch_name &&
new->fabric_name == old->fabric_name &&
new->fc_map == old->fc_map &&
- compare_ether_addr(new->mac, old->mac) == 0)
+ ether_addr_equal(new->mac, old->mac))
return 1;
return 0;
}