domenico/openwrt-R7800-nss
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

broadcom-wl: fix crash when starting multiple virtual interfaces

Browse Source 
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
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);