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broadcom-wl: fix crash when starting multiple virtual interfaces

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When enabling multiple VIFS, the driver sometimes crashes.  The frequency
of the crash increases as more VIFS are enabled.

Signed-off-by: Nathan Hintz <nlhintz@hotmail.com>

SVN-Revision: 38762
This commit is contained in:
Hauke Mehrtens 2013-11-11 22:04:26 +00:00
parent b98f77f3d9
commit 697f4a19e5
6 changed files with 131 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

123
package/kernel/broadcom-wl/patches/008-fix_virtual_interfaces.patch
View File

@ -1,6 +1,117 @@
--- a/driver/wl_linux.c
+++ b/driver/wl_linux.c
@@ -1545,6 +1545,8 @@ wl_add_if(wl_info_t *wl, struct wlc_if*
@@ -354,6 +354,7 @@ static int wl_read_proc(char *buffer, ch
static int wl_dump(wl_info_t *wl, struct bcmstrbuf *b);
#endif /* BCMDBG */
struct wl_if *wl_alloc_if(wl_info_t *wl, int iftype, uint unit, struct wlc_if* wlc_if);
+static void wl_link_if(wl_info_t *wl, wl_if_t *wlif);
static void wl_free_if(wl_info_t *wl, wl_if_t *wlif);
@@ -566,6 +567,9 @@ wl_attach(uint16 vendor, uint16 device,
wl->dev = dev;
wl_if_setup(dev);
+ /* add the interface to the interface linked list */
+ wl_link_if(wl, wlif);
+
/* map chip registers (47xx: and sprom) */
dev->base_addr = regs;
@@ -1106,10 +1110,14 @@ wl_free(wl_info_t *wl)
free_irq(wl->dev->irq, wl);
}
- if (wl->dev) {
- wl_free_if(wl, WL_DEV_IF(wl->dev));
- wl->dev = NULL;
+ /* free all interfaces */
+ while (wl->if_list) {
+ if ((wl->if_list->dev != wl->dev) || wl->if_list->next == NULL)
+ wl_free_if(wl, wl->if_list);
+ else
+ wl_free_if(wl, wl->if_list->next);
}
+ wl->dev = NULL;
#ifdef TOE
wl_toe_detach(wl->toei);
@@ -1355,10 +1363,12 @@ wl_txflowcontrol(wl_info_t *wl, bool sta
ASSERT(prio == ALLPRIO);
for (wlif = wl->if_list; wlif != NULL; wlif = wlif->next) {
- if (state == ON)
- netif_stop_queue(wlif->dev);
- else
- netif_wake_queue(wlif->dev);
+ if (wlif->dev_registed) {
+ if (state == ON)
+ netif_stop_queue(wlif->dev);
+ else
+ netif_wake_queue(wlif->dev);
+ }
}
}
@@ -1398,7 +1408,6 @@ wl_alloc_if(wl_info_t *wl, int iftype, u
{
struct net_device *dev;
wl_if_t *wlif;
- wl_if_t *p;
dev = alloc_etherdev(sizeof(wl_if_t));
wlif = netdev_priv(dev);
@@ -1411,9 +1420,13 @@ wl_alloc_if(wl_info_t *wl, int iftype, u
wlif->wlcif = wlcif;
wlif->subunit = subunit;
- /* match current flow control state */
- if (iftype != WL_IFTYPE_MON && wl->dev && netif_queue_stopped(wl->dev))
- netif_stop_queue(dev);
+ return wlif;
+}
+
+static void
+wl_link_if(wl_info_t *wl, wl_if_t *wlif)
+{
+ wl_if_t *p;
/* add the interface to the interface linked list */
if (wl->if_list == NULL)
@@ -1424,7 +1437,6 @@ wl_alloc_if(wl_info_t *wl, int iftype, u
p = p->next;
p->next = wlif;
}
- return wlif;
}
static void
@@ -1504,6 +1516,9 @@ _wl_add_if(wl_task_t *task)
wl_info_t *wl = wlif->wl;
struct net_device *dev = wlif->dev;
+ /* add the interface to the interface linked list */
+ wl_link_if(wl, wlif);
+
if (wlif->type == WL_IFTYPE_WDS)
dev->netdev_ops = &wl_wds_ops;
@@ -1516,6 +1531,14 @@ _wl_add_if(wl_task_t *task)
}
wlif->dev_registed = TRUE;
+ /* match current flow control state */
+ if (wl->dev) {
+ if (netif_queue_stopped(wl->dev))
+ netif_stop_queue(dev);
+ else
+ netif_wake_queue(dev);
+ }
+
done:
MFREE(wl->osh, task, sizeof(wl_task_t));
atomic_dec(&wl->callbacks);
@@ -1545,6 +1568,8 @@ wl_add_if(wl_info_t *wl, struct wlc_if*
return NULL;
}
@ -9,3 +120,13 @@
sprintf(wlif->dev->name, "%s%d.%d", devname, wl->pub->unit, wlif->subunit);
if (remote)
bcopy(remote, &wlif->remote, ETHER_ADDR_LEN);
@@ -2778,6 +2803,9 @@ wl_add_monitor(wl_task_t *task)
dev = wlif->dev;
wl->monitor = dev;
+ /* add the interface to the interface linked list */
+ wl_link_if(wl, wlif);
+
/* override some fields */
sprintf(dev->name, "prism%d", wl->pub->unit);
bcopy(wl->dev->dev_addr, dev->dev_addr, ETHER_ADDR_LEN);

4
package/kernel/broadcom-wl/patches/009-fix_compile_3_2.patch
View File

@ -1,6 +1,6 @@
--- a/driver/wl_linux.c
+++ b/driver/wl_linux.c
@@ -462,6 +462,16 @@ wl_schedule_fn(wl_info_t *wl, void (*fn)
@@ -463,6 +463,16 @@ wl_schedule_fn(wl_info_t *wl, void (*fn)
}
#endif /* DSLCPE_DELAY */
@ -17,7 +17,7 @@
#define WL_DEFAULT_OPS \
.ndo_open = wl_open, \
.ndo_stop = wl_close, \
@@ -470,6 +480,7 @@ wl_schedule_fn(wl_info_t *wl, void (*fn)
@@ -471,6 +481,7 @@ wl_schedule_fn(wl_info_t *wl, void (*fn)
.ndo_set_mac_address = wl_set_mac_address, \
.ndo_set_multicast_list = wl_set_multicast_list, \
.ndo_do_ioctl = wl_ioctl

2
package/kernel/broadcom-wl/patches/010-remove_irqf_samble_random.patch
View File

@ -1,6 +1,6 @@
--- a/driver/wl_linux.c 2012-09-26 20:51:48.099454971 -0400
+++ b/driver/wl_linux.c 2012-09-26 20:53:24.115453441 -0400
@@ -691,7 +691,7 @@
@@ -695,7 +695,7 @@
if (wl->bustype != JTAG_BUS)
#endif /* BCMJTAG */
{

8
package/kernel/broadcom-wl/patches/012-compat-3.10.patch
View File

@ -9,7 +9,7 @@
static int wl_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data);
#endif /* defined(CONFIG_PROC_FS) */
#ifdef BCMDBG
@@ -516,7 +516,7 @@ wl_attach(uint16 vendor, uint16 device,
@@ -517,7 +517,7 @@ wl_attach(uint16 vendor, uint16 device,
struct net_device *dev;
wl_if_t *wlif;
wl_info_t *wl;
@ -18,7 +18,7 @@
char tmp[128];
#endif
osl_t *osh;
@@ -660,7 +660,7 @@ wl_attach(uint16 vendor, uint16 device,
@@ -664,7 +664,7 @@ wl_attach(uint16 vendor, uint16 device,
WL_ERROR(("wl%d: Error setting MPC variable to 0\n", unit));
}
}
@ -27,7 +27,7 @@
/* create /proc/net/wl<unit> */
sprintf(tmp, "net/wl%d", wl->pub->unit);
create_proc_read_entry(tmp, 0, 0, wl_read_proc, (void*)wl);
@@ -806,7 +806,7 @@ wl_dbus_disconnect_cb(void *arg)
@@ -810,7 +810,7 @@ wl_dbus_disconnect_cb(void *arg)
}
#endif /* BCMDBUS */
@ -36,7 +36,7 @@
static int
wl_read_proc(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
{
@@ -1141,7 +1141,7 @@ wl_free(wl_info_t *wl)
@@ -1149,7 +1149,7 @@ wl_free(wl_info_t *wl)
/* free common resources */
if (wl->wlc) {

2
package/kernel/broadcom-wl/patches/013-interface-name.patch
View File

@ -1,6 +1,6 @@
--- a/driver/wl_linux.c
+++ b/driver/wl_linux.c
@@ -1560,7 +1560,7 @@ wl_add_if(wl_info_t *wl, struct wlc_if*
@@ -1583,7 +1583,7 @@ wl_add_if(wl_info_t *wl, struct wlc_if*
wl_if_setup(wlif->dev);

2
package/kernel/broadcom-wl/patches/110-add_number_to_dev_name.patch
View File

@ -1,6 +1,6 @@
--- a/driver/wl_linux.c
+++ b/driver/wl_linux.c
@@ -1416,7 +1416,7 @@ wl_alloc_if(wl_info_t *wl, int iftype, u
@@ -1425,7 +1425,7 @@ wl_alloc_if(wl_info_t *wl, int iftype, u
dev = alloc_etherdev(sizeof(wl_if_t));
wlif = netdev_priv(dev);
bzero(wlif, sizeof(wl_if_t));