diff options
author | Felix Fietkau <nbd@nbd.name> | 2017-01-27 14:32:10 +0100 |
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committer | Felix Fietkau <nbd@nbd.name> | 2017-02-04 20:28:14 +0100 |
commit | f791fb4af45032a653ba7c850f4564923871cb16 (patch) | |
tree | c1fc4e564c8e27faad582e5b55a9ce91816a241c /target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch | |
parent | 7d00cfe9bb693e376ac9d035e13f8ce8a5ff572c (diff) | |
download | upstream-f791fb4af45032a653ba7c850f4564923871cb16.tar.gz upstream-f791fb4af45032a653ba7c850f4564923871cb16.tar.bz2 upstream-f791fb4af45032a653ba7c850f4564923871cb16.zip |
kernel: add linux 4.9 support
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Tim Harvey <tharvey@gateworks.com> [fixes]
Diffstat (limited to 'target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch')
-rw-r--r-- | target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch b/target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch new file mode 100644 index 0000000000..062cc87e46 --- /dev/null +++ b/target/linux/generic/patches-4.9/150-bridge_allow_receiption_on_disabled_port.patch @@ -0,0 +1,43 @@ +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@nbd.name> + +--- a/net/bridge/br_input.c ++++ b/net/bridge/br_input.c +@@ -232,7 +232,8 @@ static int br_handle_local_finish(struct + { + struct net_bridge_port *p = br_port_get_rcu(skb->dev); + +- __br_handle_local_finish(skb); ++ if (p->state != BR_STATE_DISABLED) ++ __br_handle_local_finish(skb); + + BR_INPUT_SKB_CB(skb)->brdev = p->br->dev; + br_pass_frame_up(skb); +@@ -315,6 +316,15 @@ 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; ++ ++ NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, ++ dev_net(skb->dev), NULL, skb, skb->dev, NULL, ++ br_handle_local_finish); ++ break; ++ + case BR_STATE_FORWARDING: + rhook = rcu_dereference(br_should_route_hook); + if (rhook) { |