diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-08-03 23:54:41 +1000 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2006-08-04 14:57:19 -0400 |
| commit | 782a6675119c76c071e74e2ddd98268f47770cba (patch) | |
| tree | 83815eb8984242ec93a632694d0d243ec8ccd691 /net/core | |
| parent | efe78cda3596f8a6d1c2d4a6b1a221bafa3e1a48 (diff) | |
[PATCH] Send wireless netlink events with a clean slate
Drivers expect to be able to call wireless_send_event in arbitrary
contexts. On the other hand, netlink really doesn't like being
invoked in an IRQ context. So we need to postpone the sending of
netlink skb's to a tasklet.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/wireless.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/net/core/wireless.c b/net/core/wireless.c index d2bc72d318f..de0bde4b51d 100644 --- a/net/core/wireless.c +++ b/net/core/wireless.c @@ -82,6 +82,7 @@ #include <linux/init.h> /* for __init */ #include <linux/if_arp.h> /* ARPHRD_ETHER */ #include <linux/etherdevice.h> /* compare_ether_addr */ +#include <linux/interrupt.h> #include <linux/wireless.h> /* Pretty obvious */ #include <net/iw_handler.h> /* New driver API */ @@ -1842,6 +1843,18 @@ int wireless_rtnetlink_set(struct net_device * dev, */ #ifdef WE_EVENT_RTNETLINK +static struct sk_buff_head wireless_nlevent_queue; + +static void wireless_nlevent_process(unsigned long data) +{ + struct sk_buff *skb; + + while ((skb = skb_dequeue(&wireless_nlevent_queue))) + netlink_broadcast(rtnl, skb, 0, RTNLGRP_LINK, GFP_ATOMIC); +} + +static DECLARE_TASKLET(wireless_nlevent_tasklet, wireless_nlevent_process, 0); + /* ---------------------------------------------------------------- */ /* * Fill a rtnetlink message with our event data. @@ -1904,8 +1917,17 @@ static inline void rtmsg_iwinfo(struct net_device * dev, return; } NETLINK_CB(skb).dst_group = RTNLGRP_LINK; - netlink_broadcast(rtnl, skb, 0, RTNLGRP_LINK, GFP_ATOMIC); + skb_queue_tail(&wireless_nlevent_queue, skb); + tasklet_schedule(&wireless_nlevent_tasklet); +} + +static int __init wireless_nlevent_init(void) +{ + skb_queue_head_init(&wireless_nlevent_queue); + return 0; } + +subsys_initcall(wireless_nlevent_init); #endif /* WE_EVENT_RTNETLINK */ /* ---------------------------------------------------------------- */ |