From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 118B360B30 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 38F7C60D72 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=4GfMsVv6H7/hWq1qWkAPKSCxsToaIVqZEZ1kBwsImrQ=; b=PhYRMTQovditbP548tRdVDJzY2e8EfqMG4uh6SqYYJIvBwSvJ13gXMtW4cj7IBSGdssDSrzkYDpc3vzxRKdw75Vkp/IHc4Jhbuxs6+ZvefYGo4pRVsa3psv+zZS1oHXUbDEQqy9D9szTBU+fv0JfbtkTnx1yTr22u8sTlYtBBfKTWvlcguEoI2NpwDOEsFm2+Zt4xyhz4NdS117u9CwpXwiHaQHJbN60elA5RnaZAKlz6n8gn4Dbfz6h7jQ88I6ja0KG4NEPsZ39ZvKwOAQ+NlhBghg1QqRaek3zlwtgEPeBbjkyOoNsarMms6GFC0nSL2nYAUFxIwmRyZLwUubtdQ== From: Ido Schimmel Date: Mon, 5 Dec 2022 09:42:50 +0200 Message-Id: <20221205074251.4049275-8-idosch@nvidia.com> In-Reply-To: <20221205074251.4049275-1-idosch@nvidia.com> References: <20221205074251.4049275-1-idosch@nvidia.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain MIME-Version: 1.0 Subject: [Bridge] [PATCH net-next 7/8] bridge: mcast: Move checks out of critical section List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: netdev@vger.kernel.org, bridge@lists.linux-foundation.org Cc: mlxsw@nvidia.com, razor@blackwall.org, Ido Schimmel , edumazet@google.com, roopa@nvidia.com, kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net The checks only require information parsed from the RTM_NEWMDB netlink message and do not rely on any state stored in the bridge driver. Therefore, there is no need to perform the checks in the critical section under the multicast lock. Move the checks out of the critical section. Signed-off-by: Ido Schimmel --- net/bridge/br_mdb.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 67b6bc7272d3..aa5faccf09f8 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -805,24 +805,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port, if (!brmctx) return -EINVAL; - /* host join errors which can happen before creating the group */ - if (!port && !br_group_is_l2(&group)) { - /* don't allow any flags for host-joined IP groups */ - if (entry->state) { - NL_SET_ERR_MSG_MOD(extack, "Flags are not allowed for host groups"); - return -EINVAL; - } - if (!br_multicast_is_star_g(&group)) { - NL_SET_ERR_MSG_MOD(extack, "Groups with sources cannot be manually host joined"); - return -EINVAL; - } - } - - if (br_group_is_l2(&group) && entry->state != MDB_PERMANENT) { - NL_SET_ERR_MSG_MOD(extack, "Only permanent L2 entries allowed"); - return -EINVAL; - } - mp = br_multicast_new_group(br, &group); if (IS_ERR(mp)) return PTR_ERR(mp); @@ -1026,6 +1008,24 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, if (err) return err; + /* host join errors which can happen before creating the group */ + if (!cfg.p && !br_group_is_l2(&cfg.group)) { + /* don't allow any flags for host-joined IP groups */ + if (cfg.entry->state) { + NL_SET_ERR_MSG_MOD(extack, "Flags are not allowed for host groups"); + return -EINVAL; + } + if (!br_multicast_is_star_g(&cfg.group)) { + NL_SET_ERR_MSG_MOD(extack, "Groups with sources cannot be manually host joined"); + return -EINVAL; + } + } + + if (br_group_is_l2(&cfg.group) && cfg.entry->state != MDB_PERMANENT) { + NL_SET_ERR_MSG_MOD(extack, "Only permanent L2 entries allowed"); + return -EINVAL; + } + if (cfg.p) { if (cfg.p->state == BR_STATE_DISABLED && cfg.entry->state != MDB_PERMANENT) { NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state and entry is not permanent"); -- 2.37.3