From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=blackwall-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0U8ioPcKzi2jt/DpEgccopIlJARByWOltx48kXuPcYI=; b=kh5L/JWBjVVX4qw5w0ujY9XuKUAA07r7Ic8m9ki46oKaf5YlGdAEMySZlKZgUbRi3f eLwBWw9M4TM+6HB+b8qpu0bC6jQgO8MWZqsbQM2mgBa9ZLfGx+98t07ah13JqfnuyR2r Lb9YtCbNJD1sDLzN4hcoTjRZZ8lsqRuvLhSNja9Ny3ZAVd9jilDt96cBJfMTw+KL6n0g EOY5zVt36u07rbleTpuvtCD6cb0M5HEFFgo9r1WUQarzEiTZCF3RFf6hXKF15MXhYcSS +hl4SO7x1yCOuCNNi7dkHVDY+KO4KR+zoAUSoHoH1ujbK/9YZ3BcoBwSNo6m8znFUO1J M5Pw== From: Nikolay Aleksandrov Date: Tue, 10 Aug 2021 18:29:33 +0300 Message-Id: <20210810152933.178325-16-razor@blackwall.org> In-Reply-To: <20210810152933.178325-1-razor@blackwall.org> References: <20210810152933.178325-1-razor@blackwall.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Bridge] [PATCH net-next 15/15] net: bridge: vlan: use br_rports_fill_info() to export mcast router ports List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: netdev@vger.kernel.org Cc: bridge@lists.linux-foundation.org, Nikolay Aleksandrov , roopa@nvidia.com From: Nikolay Aleksandrov Embed the standard multicast router port export by br_rports_fill_info() into a new global vlan attribute BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS. In order to have the same format for the global bridge mcast context and the per-vlan mcast context we need a double-nesting: - BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS - MDBA_ROUTER Currently we don't compare router lists, if any router port exists in the bridge mcast contexts we consider their option sets as different and export them separately. In addition we export the router port vlan id when dumping similar to the router port notification format. Signed-off-by: Nikolay Aleksandrov --- include/uapi/linux/if_bridge.h | 1 + net/bridge/br_mdb.c | 17 ++++------------- net/bridge/br_private.h | 15 +++++++++++++++ net/bridge/br_vlan_options.c | 18 ++++++++++++++++++ 4 files changed, 38 insertions(+), 13 deletions(-) diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 716ce30b3ca8..4a57d063768d 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -562,6 +562,7 @@ enum { BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER, BRIDGE_VLANDB_GOPTS_MCAST_ROUTER, + BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS, __BRIDGE_VLANDB_GOPTS_MAX }; #define BRIDGE_VLANDB_GOPTS_MAX (__BRIDGE_VLANDB_GOPTS_MAX - 1) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 7c16e2c76220..389ff3c1e9d9 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -16,16 +16,6 @@ #include "br_private.h" -static bool br_rports_have_mc_router(const struct net_bridge_mcast *brmctx) -{ -#if IS_ENABLED(CONFIG_IPV6) - return !hlist_empty(&brmctx->ip4_mc_router_list) || - !hlist_empty(&brmctx->ip6_mc_router_list); -#else - return !hlist_empty(&brmctx->ip4_mc_router_list); -#endif -} - static bool br_ip4_rports_get_timer(struct net_bridge_mcast_port *pmctx, unsigned long *timer) @@ -47,8 +37,8 @@ br_ip6_rports_get_timer(struct net_bridge_mcast_port *pmctx, #endif } -static int br_rports_fill_info(struct sk_buff *skb, - const struct net_bridge_mcast *brmctx) +int br_rports_fill_info(struct sk_buff *skb, + const struct net_bridge_mcast *brmctx) { u16 vid = brmctx->vlan ? brmctx->vlan->vid : 0; bool have_ip4_mc_rtr, have_ip6_mc_rtr; @@ -97,7 +87,8 @@ static int br_rports_fill_info(struct sk_buff *skb, ip4_timer)) || (have_ip6_mc_rtr && nla_put_u32(skb, MDBA_ROUTER_PATTR_INET6_TIMER, - ip6_timer))) { + ip6_timer)) || + (vid && nla_put_u16(skb, MDBA_ROUTER_PATTR_VID, vid))) { nla_nest_cancel(skb, port_nest); goto fail; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index f5af6b56be8f..6f5106ab6f20 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -958,6 +958,8 @@ bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, const void *ctx, bool adding, struct notifier_block *nb, struct netlink_ext_ack *extack); +int br_rports_fill_info(struct sk_buff *skb, + const struct net_bridge_mcast *brmctx); static inline bool br_group_is_l2(const struct br_ip *group) { @@ -1181,6 +1183,17 @@ br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) pmctx->vlan->state == BR_STATE_BLOCKING); } +static inline bool +br_rports_have_mc_router(const struct net_bridge_mcast *brmctx) +{ +#if IS_ENABLED(CONFIG_IPV6) + return !hlist_empty(&brmctx->ip4_mc_router_list) || + !hlist_empty(&brmctx->ip6_mc_router_list); +#else + return !hlist_empty(&brmctx->ip4_mc_router_list); +#endif +} + static inline bool br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, const struct net_bridge_mcast *brmctx2) @@ -1205,6 +1218,8 @@ br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, brmctx2->multicast_startup_query_interval && brmctx1->multicast_querier == brmctx2->multicast_querier && brmctx1->multicast_router == brmctx2->multicast_router && + !br_rports_have_mc_router(brmctx1) && + !br_rports_have_mc_router(brmctx2) && #if IS_ENABLED(CONFIG_IPV6) brmctx1->multicast_mld_version == brmctx2->multicast_mld_version && diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c index 6ba45b73931f..b4fd5fa441b7 100644 --- a/net/bridge/br_vlan_options.c +++ b/net/bridge/br_vlan_options.c @@ -272,6 +272,7 @@ bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, const struct net_bridge_vlan *v_opts) { + struct nlattr *nest2 __maybe_unused; u64 clockval __maybe_unused; struct nlattr *nest; @@ -326,6 +327,23 @@ bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, clockval, BRIDGE_VLANDB_GOPTS_PAD)) goto out_err; + if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) { + nest2 = nla_nest_start(skb, + BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS); + if (!nest2) + goto out_err; + + rcu_read_lock(); + if (br_rports_fill_info(skb, &v_opts->br_mcast_ctx)) { + rcu_read_unlock(); + nla_nest_cancel(skb, nest2); + goto out_err; + } + rcu_read_unlock(); + + nla_nest_end(skb, nest2); + } + #if IS_ENABLED(CONFIG_IPV6) if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION, v_opts->br_mcast_ctx.multicast_mld_version)) -- 2.31.1