summaryrefslogtreecommitdiffstats
path: root/net/ipv6/mcast.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv6/mcast.c')
-rw-r--r--net/ipv6/mcast.c56
1 files changed, 47 insertions, 9 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 6c05c79..4420948 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1252,8 +1252,7 @@ int igmp6_event_query(struct sk_buff *skb)
}
} else {
for (ma = idev->mc_list; ma; ma=ma->next) {
- if (group_type != IPV6_ADDR_ANY &&
- !ipv6_addr_equal(group, &ma->mca_addr))
+ if (!ipv6_addr_equal(group, &ma->mca_addr))
continue;
spin_lock_bh(&ma->mca_lock);
if (ma->mca_flags & MAF_TIMER_RUNNING) {
@@ -1268,11 +1267,10 @@ int igmp6_event_query(struct sk_buff *skb)
ma->mca_flags &= ~MAF_GSQUERY;
}
if (!(ma->mca_flags & MAF_GSQUERY) ||
- mld_marksources(ma, ntohs(mlh2->nsrcs), mlh2->srcs))
+ mld_marksources(ma, ntohs(mlh2->nsrcs), mlh2->srcs))
igmp6_group_queried(ma, max_delay);
spin_unlock_bh(&ma->mca_lock);
- if (group_type != IPV6_ADDR_ANY)
- break;
+ break;
}
}
read_unlock_bh(&idev->lock);
@@ -1351,7 +1349,7 @@ static int is_in(struct ifmcaddr6 *pmc, struct ip6_sf_list *psf, int type,
* in all filters
*/
if (psf->sf_count[MCAST_INCLUDE])
- return 0;
+ return type == MLD2_MODE_IS_INCLUDE;
return pmc->mca_sfcount[MCAST_EXCLUDE] ==
psf->sf_count[MCAST_EXCLUDE];
}
@@ -1966,7 +1964,7 @@ static void sf_markstate(struct ifmcaddr6 *pmc)
static int sf_setstate(struct ifmcaddr6 *pmc)
{
- struct ip6_sf_list *psf;
+ struct ip6_sf_list *psf, *dpsf;
int mca_xcount = pmc->mca_sfcount[MCAST_EXCLUDE];
int qrv = pmc->idev->mc_qrv;
int new_in, rv;
@@ -1978,8 +1976,48 @@ static int sf_setstate(struct ifmcaddr6 *pmc)
!psf->sf_count[MCAST_INCLUDE];
} else
new_in = psf->sf_count[MCAST_INCLUDE] != 0;
- if (new_in != psf->sf_oldin) {
- psf->sf_crcount = qrv;
+ if (new_in) {
+ if (!psf->sf_oldin) {
+ struct ip6_sf_list *prev = 0;
+
+ for (dpsf=pmc->mca_tomb; dpsf;
+ dpsf=dpsf->sf_next) {
+ if (ipv6_addr_equal(&dpsf->sf_addr,
+ &psf->sf_addr))
+ break;
+ prev = dpsf;
+ }
+ if (dpsf) {
+ if (prev)
+ prev->sf_next = dpsf->sf_next;
+ else
+ pmc->mca_tomb = dpsf->sf_next;
+ kfree(dpsf);
+ }
+ psf->sf_crcount = qrv;
+ rv++;
+ }
+ } else if (psf->sf_oldin) {
+ psf->sf_crcount = 0;
+ /*
+ * add or update "delete" records if an active filter
+ * is now inactive
+ */
+ for (dpsf=pmc->mca_tomb; dpsf; dpsf=dpsf->sf_next)
+ if (ipv6_addr_equal(&dpsf->sf_addr,
+ &psf->sf_addr))
+ break;
+ if (!dpsf) {
+ dpsf = (struct ip6_sf_list *)
+ kmalloc(sizeof(*dpsf), GFP_ATOMIC);
+ if (!dpsf)
+ continue;
+ *dpsf = *psf;
+ /* pmc->mca_lock held by callers */
+ dpsf->sf_next = pmc->mca_tomb;
+ pmc->mca_tomb = dpsf;
+ }
+ dpsf->sf_crcount = qrv;
rv++;
}
}
OpenPOWER on IntegriCloud