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net: bridge: mcast: add support for group query retransmit

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We need to be able to retransmit group-specific and group-and-source
specific queries. The new timer takes care of those.

v3: add IPv6 support

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nikolay Aleksandrov
2020-09-07 12:56:10 +03:00
committed by Jakub Kicinski
parent 438ef2d027
commit 42c11ccfe8
2 changed files with 71 additions and 10 deletions
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8
net/bridge/br_private.h
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@@ -240,10 +240,12 @@ struct net_bridge_port_group {
unsigned char eth_addr[ETH_ALEN] __aligned(2);
unsigned char flags;
unsigned char filter_mode;
unsigned char grp_query_rexmit_cnt;
struct hlist_head src_list;
unsigned int src_ents;
struct timer_list timer;
struct timer_list rexmit_timer;
struct hlist_node mglist;
struct rcu_head rcu;
@@ -868,6 +870,12 @@ static inline int br_multicast_igmp_type(const struct sk_buff *skb)
{
return BR_INPUT_SKB_CB(skb)->igmp;
}
static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
{
return br->multicast_last_member_interval *
br->multicast_last_member_count;
}
#else
static inline int br_multicast_rcv(struct net_bridge *br,
struct net_bridge_port *port,