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author | Imre Kaloz <kaloz@openwrt.org> | 2013-10-24 13:50:11 +0000 |
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committer | Imre Kaloz <kaloz@openwrt.org> | 2013-10-24 13:50:11 +0000 |
commit | e72c7e17a475c00134c56f4392578ddc16a47a2e (patch) | |
tree | 842835f958f9c9ed315cb853173d51e43f76bbf5 /target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch | |
parent | 4341ea40379ed24c103e37b75661c62bfc3270f6 (diff) | |
download | mtk-20170518-e72c7e17a475c00134c56f4392578ddc16a47a2e.zip mtk-20170518-e72c7e17a475c00134c56f4392578ddc16a47a2e.tar.gz mtk-20170518-e72c7e17a475c00134c56f4392578ddc16a47a2e.tar.bz2 |
preliminary 3.12 support
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
SVN-Revision: 38528
Diffstat (limited to 'target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch')
-rw-r--r-- | target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch b/target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch new file mode 100644 index 0000000..8a2fb41 --- /dev/null +++ b/target/linux/generic/patches-3.12/120-bridge_allow_receiption_on_disabled_port.patch @@ -0,0 +1,54 @@ +From: Stephen Hemminger <stephen@networkplumber.org> +Subject: bridge: allow receiption on disabled port + +When an ethernet device is enslaved to a bridge, and the bridge STP +detects loss of carrier (or operational state down), then normally +packet receiption is blocked. + +This breaks control applications like WPA which maybe expecting to +receive packets to negotiate to bring link up. The bridge needs to +block forwarding packets from these disabled ports, but there is no +hard requirement to not allow local packet delivery. + +Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> +Signed-off-by: Felix Fietkau <nbd@openwrt.org> + +--- a/net/bridge/br_input.c ++++ b/net/bridge/br_input.c +@@ -144,11 +144,13 @@ drop: + static int br_handle_local_finish(struct sk_buff *skb) + { + struct net_bridge_port *p = br_port_get_rcu(skb->dev); +- u16 vid = 0; ++ if (p->state != BR_STATE_DISABLED) { ++ u16 vid = 0; + +- br_vlan_get_tag(skb, &vid); +- if (p->flags & BR_LEARNING) +- br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ br_vlan_get_tag(skb, &vid); ++ if (p->flags & BR_LEARNING) ++ br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ } + return 0; /* process further */ + } + +@@ -218,6 +220,18 @@ rx_handler_result_t br_handle_frame(stru + + forward: + switch (p->state) { ++ case BR_STATE_DISABLED: ++ if (ether_addr_equal(p->br->dev->dev_addr, dest)) ++ skb->pkt_type = PACKET_HOST; ++ ++ if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, ++ br_handle_local_finish)) ++ break; ++ ++ BR_INPUT_SKB_CB(skb)->brdev = p->br->dev; ++ br_pass_frame_up(skb); ++ break; ++ + case BR_STATE_FORWARDING: + rhook = rcu_dereference(br_should_route_hook); + if (rhook) { |