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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-07-10 19:47:37 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-07-10 19:47:37 +0000 |
| commit | 4f007a4360e1bf2879e39de021e81cb013c50466 (patch) | |
| tree | 502477ef2ef13ee5af457368fd5a6b473067b228 /nuttx/net/uip/uip_igmpleave.c | |
| parent | c4680a4704fd377f4c89e0b8f6149f3aec8b39fb (diff) | |
| download | px4-nuttx-4f007a4360e1bf2879e39de021e81cb013c50466.tar.gz px4-nuttx-4f007a4360e1bf2879e39de021e81cb013c50466.tar.bz2 px4-nuttx-4f007a4360e1bf2879e39de021e81cb013c50466.zip | |
Add IGMP timer logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2782 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/net/uip/uip_igmpleave.c')
| -rwxr-xr-x | nuttx/net/uip/uip_igmpleave.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/nuttx/net/uip/uip_igmpleave.c b/nuttx/net/uip/uip_igmpleave.c index 22775ede8..a220662fd 100755 --- a/nuttx/net/uip/uip_igmpleave.c +++ b/nuttx/net/uip/uip_igmpleave.c @@ -130,15 +130,25 @@ void igmp_leavegroup(struct uip_driver_s *dev, uip_ipaddr_t *grpaddr)
{
struct igmp_group_s *group;
+ irqstate_t flags;
/* Find the entry corresponding to the address leaving the group */
group = uip_grpfind(dev, grpaddr);
if (group)
{
- /* Cancel the timer */
+ /* Cancel the timer and discard any queued Membership Reports. Canceling
+ * the timer will prevent any new Membership Reports from being sent;
+ * clearing the flags will discard any pending Membership Reports that
+ * could interfere with the Leave Group.
+ */
+ flags = irqsave();
wd_cancel(group->wdog);
+ CLR_SCHEDMSG(group->flags);
+ CLR_WAITMSG(group->flags);
+ irqrestore(flags);
+
IGMP_STATINCR(uip_stat.igmp.leaves);
/* Send a leave if the flag is set according to the state diagram */
|