diff options
| author | Nikolay Aleksandrov | 2021-08-13 17:59:59 +0300 |
|---|---|---|
| committer | David S. Miller | 2021-08-14 14:02:43 +0100 |
| commit | c3fb3698f935381161101d2479d66dd48c106183 (patch) | |
| tree | a0b9fd56dba1ac4af2ee90867629108cffb07a27 /net/bridge | |
| parent | 67b746f94ff39d8b998c4ea9493c6ab2d6c225d4 (diff) | |
net: bridge: mcast: consolidate querier selection for ipv4 and ipv6
We can consolidate both functions as they share almost the same logic.
This is easier to maintain and we have a single querier update function.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_multicast.c | 67 |
1 files changed, 29 insertions, 38 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 701cf46b89de..3705b7ace62d 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -2864,55 +2864,46 @@ unlock_continue: } #endif -static bool br_ip4_multicast_select_querier(struct net_bridge_mcast *brmctx, - struct net_bridge_mcast_port *pmctx, - struct br_ip *saddr) +static bool br_multicast_select_querier(struct net_bridge_mcast *brmctx, + struct net_bridge_mcast_port *pmctx, + struct br_ip *saddr) { int port_ifidx = pmctx ? pmctx->port->dev->ifindex : 0; + struct timer_list *own_timer, *other_timer; + struct bridge_mcast_querier *querier; - if (!timer_pending(&brmctx->ip4_own_query.timer) && - !timer_pending(&brmctx->ip4_other_query.timer)) - goto update; - - if (!brmctx->ip4_querier.addr.src.ip4) - goto update; - - if (ntohl(saddr->src.ip4) <= ntohl(brmctx->ip4_querier.addr.src.ip4)) - goto update; - - return false; - -update: - br_multicast_update_querier(brmctx, &brmctx->ip4_querier, port_ifidx, - saddr); - - return true; -} - + switch (saddr->proto) { + case htons(ETH_P_IP): + querier = &brmctx->ip4_querier; + own_timer = &brmctx->ip4_own_query.timer; + other_timer = &brmctx->ip4_other_query.timer; + if (!querier->addr.src.ip4 || + ntohl(saddr->src.ip4) <= ntohl(querier->addr.src.ip4)) + goto update; + break; #if IS_ENABLED(CONFIG_IPV6) -static bool br_ip6_multicast_select_querier(struct net_bridge_mcast *brmctx, - struct net_bridge_mcast_port *pmctx, - struct br_ip *saddr) -{ - int port_ifidx = pmctx ? pmctx->port->dev->ifindex : 0; - - if (!timer_pending(&brmctx->ip6_own_query.timer) && - !timer_pending(&brmctx->ip6_other_query.timer)) - goto update; + case htons(ETH_P_IPV6): + querier = &brmctx->ip6_querier; + own_timer = &brmctx->ip6_own_query.timer; + other_timer = &brmctx->ip6_other_query.timer; + if (ipv6_addr_cmp(&saddr->src.ip6, &querier->addr.src.ip6) <= 0) + goto update; + break; +#endif + default: + return false; + } - if (ipv6_addr_cmp(&saddr->src.ip6, - &brmctx->ip6_querier.addr.src.ip6) <= 0) + if (!timer_pending(own_timer) && !timer_pending(other_timer)) goto update; return false; update: - br_multicast_update_querier(brmctx, &brmctx->ip6_querier, port_ifidx, - saddr); + br_multicast_update_querier(brmctx, querier, port_ifidx, saddr); return true; } -#endif static void br_multicast_update_query_timer(struct net_bridge_mcast *brmctx, @@ -3115,7 +3106,7 @@ br_ip4_multicast_query_received(struct net_bridge_mcast *brmctx, struct br_ip *saddr, unsigned long max_delay) { - if (!br_ip4_multicast_select_querier(brmctx, pmctx, saddr)) + if (!br_multicast_select_querier(brmctx, pmctx, saddr)) return; br_multicast_update_query_timer(brmctx, query, max_delay); @@ -3130,7 +3121,7 @@ br_ip6_multicast_query_received(struct net_bridge_mcast *brmctx, struct br_ip *saddr, unsigned long max_delay) { - if (!br_ip6_multicast_select_querier(brmctx, pmctx, saddr)) + if (!br_multicast_select_querier(brmctx, pmctx, saddr)) return; br_multicast_update_query_timer(brmctx, query, max_delay); |