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authorNikolay Aleksandrov <nikolay@nvidia.com>2021-01-20 17:52:01 +0300
committerJakub Kicinski <kuba@kernel.org>2021-01-23 06:39:57 +0300
commitc9739016a03244e32f48c7f01176cd3b6ac1d916 (patch)
treef1b6ae8ec5f4ba6825d37b53d6e3991079a16a56 /net
parentb66bf55bbc1c1c985d136980fb21dfe9ffd6bf4c (diff)
downloadlinux-c9739016a03244e32f48c7f01176cd3b6ac1d916.tar.xz
net: bridge: multicast: add EHT host filter_mode handling
We should be able to handle host filter mode changing. For exclude mode we must create a zero-src entry so the group will be kept even without any S,G entries (non-zero source sets). That entry doesn't count to the entry limit and can always be created, its timer is refreshed on new exclude reports and if we change the host filter mode to include then it gets removed and we rely only on the non-zero source sets. Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_multicast_eht.c42
1 files changed, 38 insertions, 4 deletions
diff --git a/net/bridge/br_multicast_eht.c b/net/bridge/br_multicast_eht.c
index fee3060d0495..64ccbd4ae9d9 100644
--- a/net/bridge/br_multicast_eht.c
+++ b/net/bridge/br_multicast_eht.c
@@ -381,6 +381,30 @@ static void br_multicast_ip_src_to_eht_addr(const struct br_ip *src,
}
}
+static void br_eht_convert_host_filter_mode(struct net_bridge_port_group *pg,
+ union net_bridge_eht_addr *h_addr,
+ int filter_mode)
+{
+ struct net_bridge_group_eht_host *eht_host;
+ union net_bridge_eht_addr zero_addr;
+
+ eht_host = br_multicast_eht_host_lookup(pg, h_addr);
+ if (eht_host)
+ eht_host->filter_mode = filter_mode;
+
+ memset(&zero_addr, 0, sizeof(zero_addr));
+ switch (filter_mode) {
+ case MCAST_INCLUDE:
+ br_multicast_del_eht_set_entry(pg, &zero_addr, h_addr);
+ break;
+ case MCAST_EXCLUDE:
+ br_multicast_create_eht_set_entry(pg, &zero_addr, h_addr,
+ MCAST_EXCLUDE,
+ true);
+ break;
+ }
+}
+
static void br_multicast_create_eht_set_entry(struct net_bridge_port_group *pg,
union net_bridge_eht_addr *src_addr,
union net_bridge_eht_addr *h_addr,
@@ -701,8 +725,13 @@ static bool br_multicast_eht_inc(struct net_bridge_port_group *pg,
size_t addr_size,
bool to_report)
{
- return __eht_inc_exc(pg, h_addr, srcs, nsrcs, addr_size, MCAST_INCLUDE,
- to_report);
+ bool changed;
+
+ changed = __eht_inc_exc(pg, h_addr, srcs, nsrcs, addr_size,
+ MCAST_INCLUDE, to_report);
+ br_eht_convert_host_filter_mode(pg, h_addr, MCAST_INCLUDE);
+
+ return changed;
}
static bool br_multicast_eht_exc(struct net_bridge_port_group *pg,
@@ -712,8 +741,13 @@ static bool br_multicast_eht_exc(struct net_bridge_port_group *pg,
size_t addr_size,
bool to_report)
{
- return __eht_inc_exc(pg, h_addr, srcs, nsrcs, addr_size, MCAST_EXCLUDE,
- to_report);
+ bool changed;
+
+ changed = __eht_inc_exc(pg, h_addr, srcs, nsrcs, addr_size,
+ MCAST_EXCLUDE, to_report);
+ br_eht_convert_host_filter_mode(pg, h_addr, MCAST_EXCLUDE);
+
+ return changed;
}
static bool __eht_ip4_handle(struct net_bridge_port_group *pg,