From f07d46bbc9ba9a08b338dec7bb858977d4d822fb Mon Sep 17 00:00:00 2001 From: Neerav Parikh Date: Sat, 18 May 2013 05:12:28 +0000 Subject: fcoe: Fix smatch warning in fcoe_fdmi_info function This patch fixes a smatch warning as below: smatch warnings: drivers/scsi/fcoe/fcoe.c:782 fcoe_fdmi_info() warn: 'fdmi' puts 896 bytes on stack Reported-by: Fengguang Wu Signed-off-by: Neerav Parikh Tested-by: Jack Morgan Signed-off-by: Robert Love --- drivers/scsi/fcoe/fcoe.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) (limited to 'drivers/scsi/fcoe') diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 32ae6c67ea3a..3336e5754930 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -774,7 +774,6 @@ static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) struct fcoe_port *port; struct net_device *realdev; int rc; - struct netdev_fcoe_hbainfo fdmi; port = lport_priv(lport); fcoe = port->priv; @@ -788,9 +787,13 @@ static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) return; if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { - memset(&fdmi, 0, sizeof(fdmi)); + struct netdev_fcoe_hbainfo *fdmi; + fdmi = kzalloc(sizeof(*fdmi), GFP_KERNEL); + if (!fdmi) + return; + rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, - &fdmi); + fdmi); if (rc) { printk(KERN_INFO "fcoe: Failed to retrieve FDMI " "information from netdev.\n"); @@ -800,38 +803,39 @@ static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) snprintf(fc_host_serial_number(lport->host), FC_SERIAL_NUMBER_SIZE, "%s", - fdmi.serial_number); + fdmi->serial_number); snprintf(fc_host_manufacturer(lport->host), FC_SERIAL_NUMBER_SIZE, "%s", - fdmi.manufacturer); + fdmi->manufacturer); snprintf(fc_host_model(lport->host), FC_SYMBOLIC_NAME_SIZE, "%s", - fdmi.model); + fdmi->model); snprintf(fc_host_model_description(lport->host), FC_SYMBOLIC_NAME_SIZE, "%s", - fdmi.model_description); + fdmi->model_description); snprintf(fc_host_hardware_version(lport->host), FC_VERSION_STRING_SIZE, "%s", - fdmi.hardware_version); + fdmi->hardware_version); snprintf(fc_host_driver_version(lport->host), FC_VERSION_STRING_SIZE, "%s", - fdmi.driver_version); + fdmi->driver_version); snprintf(fc_host_optionrom_version(lport->host), FC_VERSION_STRING_SIZE, "%s", - fdmi.optionrom_version); + fdmi->optionrom_version); snprintf(fc_host_firmware_version(lport->host), FC_VERSION_STRING_SIZE, "%s", - fdmi.firmware_version); + fdmi->firmware_version); /* Enable FDMI lport states */ lport->fdmi_enabled = 1; + kfree(fdmi); } else { lport->fdmi_enabled = 0; printk(KERN_INFO "fcoe: No FDMI support.\n"); -- cgit v1.2.3 From 418a8cfe69c3b6bd4598e9870b9f412e2c247214 Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Sat, 18 May 2013 06:28:17 +0000 Subject: fcoe: fix the link error status block sparse warnings Both fcoe_fc_els_lesb and fc_els_lesb are in __be32 already, and both are exactly the same size in bytes, with somewhat different member names to reflect the fact the former is for Ethernet media the latter is for Fiber Channel, so, remove conversion and use __be32 directly. This fixes the warning from sparse check. Signed-off-by: Yi Zou Reported-by: Fengguang Wu Tested-by: Jack Morgan Signed-off-by: Robert Love --- drivers/scsi/fcoe/fcoe_transport.c | 22 ++++------------------ 1 file changed, 4 insertions(+), 18 deletions(-) (limited to 'drivers/scsi/fcoe') diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index f3a5a53e8631..bedd42211727 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -180,24 +180,10 @@ void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev) { struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev); struct net_device *netdev = fcoe_get_netdev(fip->lp); - struct fcoe_fc_els_lesb *fcoe_lesb; - struct fc_els_lesb fc_lesb; - - __fcoe_get_lesb(fip->lp, &fc_lesb, netdev); - fcoe_lesb = (struct fcoe_fc_els_lesb *)(&fc_lesb); - - ctlr_dev->lesb.lesb_link_fail = - ntohl(fcoe_lesb->lesb_link_fail); - ctlr_dev->lesb.lesb_vlink_fail = - ntohl(fcoe_lesb->lesb_vlink_fail); - ctlr_dev->lesb.lesb_miss_fka = - ntohl(fcoe_lesb->lesb_miss_fka); - ctlr_dev->lesb.lesb_symb_err = - ntohl(fcoe_lesb->lesb_symb_err); - ctlr_dev->lesb.lesb_err_block = - ntohl(fcoe_lesb->lesb_err_block); - ctlr_dev->lesb.lesb_fcs_error = - ntohl(fcoe_lesb->lesb_fcs_error); + struct fc_els_lesb *fc_lesb; + + fc_lesb = (struct fc_els_lesb *)(&ctlr_dev->lesb); + __fcoe_get_lesb(fip->lp, fc_lesb, netdev); } EXPORT_SYMBOL_GPL(fcoe_ctlr_get_lesb); -- cgit v1.2.3 From a2ceb1fbaa875172345f611a3d37c3662f7e5082 Mon Sep 17 00:00:00 2001 From: Robert Love Date: Tue, 11 Jun 2013 07:28:19 +0000 Subject: libfcoe: Fix meaningless log statement ctlr_dev was initialized to NULL, and never re-assigned. This caused the log statement to always report failure. This patch removes the unused variable and fixes the log statement to always report 'success', as that is what should be logged if the code reaches this point. Signed-off-by: Robert Love Tested-by: Jack Morgan Acked-by: Neil Horman --- drivers/scsi/fcoe/fcoe_transport.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/scsi/fcoe') diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index bedd42211727..f1ae5edb2de1 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -707,7 +707,6 @@ ssize_t fcoe_ctlr_create_store(struct bus_type *bus, { struct net_device *netdev = NULL; struct fcoe_transport *ft = NULL; - struct fcoe_ctlr_device *ctlr_dev = NULL; int rc = 0; int err; @@ -754,9 +753,8 @@ ssize_t fcoe_ctlr_create_store(struct bus_type *bus, goto out_putdev; } - LIBFCOE_TRANSPORT_DBG("transport %s %s to create fcoe on %s.\n", - ft->name, (ctlr_dev) ? "succeeded" : "failed", - netdev->name); + LIBFCOE_TRANSPORT_DBG("transport %s succeeded to create fcoe on %s.\n", + ft->name, netdev->name); out_putdev: dev_put(netdev); -- cgit v1.2.3 From d17efa001aacaa774581972230b1a9db1e618ded Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Sat, 18 May 2013 04:10:07 +0000 Subject: fcoe: Stop fc_rport_priv structure leak When repeatedly doing rmmod and modprobe on the ixgbe driver while FCoE is active in a VN2VN configuration, memory leaks would be discovered by kmemleak with the following backtrace: unreferenced object 0xffff88003d076000 (size 1024): comm "kworker/0:3", pid 2998, jiffies 4295436448 (age 1015.332s) hex dump (first 32 bytes): 48 8a fe 6f 00 88 ff ff 00 00 00 00 00 00 00 00 H..o............ 01 00 00 00 02 00 00 00 7b ac 87 21 1b 00 00 10 ........{..!.... backtrace: [] kmemleak_alloc+0x5b/0xc0 [] __kmalloc+0xd8/0x1b0 [] fc_rport_create+0x48/0x1f0 [libfc] [] fcoe_ctlr_vn_add.isra.10+0x56/0x1a0 [libfcoe] [] fcoe_ctlr_vn_recv+0x8b0/0xab0 [libfcoe] [] fcoe_ctlr_recv_work+0x4c6/0xf60 [libfcoe] [] process_one_work+0x1e4/0x4d0 [] worker_thread+0x10f/0x380 [] kthread+0xea/0xf0 [] ret_from_fork+0x7c/0xb0 [] 0xffffffffffffffff This patch stops the leak of the fc_rport_priv structure. Signed-off-by: Mark Rustad Tested-by: Jack Morgan Signed-off-by: Robert Love --- drivers/scsi/fcoe/fcoe_ctlr.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/scsi/fcoe') diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 795843dde8ec..203415e02518 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2090,7 +2090,11 @@ static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = { */ static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport) { + struct fc_rport_priv *rdata; + mutex_lock(&lport->disc.disc_mutex); + list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) + lport->tt.rport_logoff(rdata); lport->disc.disc_callback = NULL; mutex_unlock(&lport->disc.disc_mutex); } -- cgit v1.2.3 From 7a5ed75a782a1f2de7fc773981ecd88bfa7595b1 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 25 Jun 2013 17:49:40 +0000 Subject: fcoe: Reduce number of sparse warnings Declare local variables and functions 'static'. This patch does not change any functionality. Signed-off-by: Bart Van Assche Signed-off-by: Robert Love --- drivers/scsi/fcoe/fcoe_sysfs.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) (limited to 'drivers/scsi/fcoe') diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c index 8c05ae017f5b..c9382d6eee78 100644 --- a/drivers/scsi/fcoe/fcoe_sysfs.c +++ b/drivers/scsi/fcoe/fcoe_sysfs.c @@ -507,7 +507,7 @@ static const struct attribute_group *fcoe_fcf_attr_groups[] = { NULL, }; -struct bus_type fcoe_bus_type; +static struct bus_type fcoe_bus_type; static int fcoe_bus_match(struct device *dev, struct device_driver *drv) @@ -541,25 +541,25 @@ static void fcoe_fcf_device_release(struct device *dev) kfree(fcf); } -struct device_type fcoe_ctlr_device_type = { +static struct device_type fcoe_ctlr_device_type = { .name = "fcoe_ctlr", .groups = fcoe_ctlr_attr_groups, .release = fcoe_ctlr_device_release, }; -struct device_type fcoe_fcf_device_type = { +static struct device_type fcoe_fcf_device_type = { .name = "fcoe_fcf", .groups = fcoe_fcf_attr_groups, .release = fcoe_fcf_device_release, }; -struct bus_attribute fcoe_bus_attr_group[] = { +static struct bus_attribute fcoe_bus_attr_group[] = { __ATTR(ctlr_create, S_IWUSR, NULL, fcoe_ctlr_create_store), __ATTR(ctlr_destroy, S_IWUSR, NULL, fcoe_ctlr_destroy_store), __ATTR_NULL }; -struct bus_type fcoe_bus_type = { +static struct bus_type fcoe_bus_type = { .name = "fcoe", .match = &fcoe_bus_match, .bus_attrs = fcoe_bus_attr_group, @@ -569,7 +569,7 @@ struct bus_type fcoe_bus_type = { * fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue * @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed */ -void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) +static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) { if (!fcoe_ctlr_work_q(ctlr)) { printk(KERN_ERR @@ -590,8 +590,8 @@ void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) * Return value: * 1 on success / 0 already queued / < 0 for error */ -int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, - struct work_struct *work) +static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, + struct work_struct *work) { if (unlikely(!fcoe_ctlr_work_q(ctlr))) { printk(KERN_ERR @@ -609,7 +609,7 @@ int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, * fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue * @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed */ -void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) +static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) { if (!fcoe_ctlr_devloss_work_q(ctlr)) { printk(KERN_ERR @@ -631,9 +631,9 @@ void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) * Return value: * 1 on success / 0 already queued / < 0 for error */ -int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, - struct delayed_work *work, - unsigned long delay) +static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, + struct delayed_work *work, + unsigned long delay) { if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) { printk(KERN_ERR -- cgit v1.2.3