diff options
Diffstat (limited to 'target/linux')
4 files changed, 130 insertions, 4 deletions
diff --git a/target/linux/generic/patches-3.10/120-bridge_allow_receiption_on_disabled_port.patch b/target/linux/generic/patches-3.10/120-bridge_allow_receiption_on_disabled_port.patch new file mode 100644 index 0000000000..5d1661c1b7 --- /dev/null +++ b/target/linux/generic/patches-3.10/120-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 +@@ -139,10 +139,14 @@ 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; + +- br_vlan_get_tag(skb, &vid); +- br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ if (p->state != BR_STATE_DISABLED) { ++ u16 vid = 0; ++ ++ br_vlan_get_tag(skb, &vid); ++ br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ } ++ + return 0; /* process further */ + } + +@@ -212,6 +216,18 @@ 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)) ++ goto drop; ++ ++ 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) { diff --git a/target/linux/generic/patches-3.10/644-bridge_optimize_netfilter_hooks.patch b/target/linux/generic/patches-3.10/644-bridge_optimize_netfilter_hooks.patch index bc56b71d37..30c036b712 100644 --- a/target/linux/generic/patches-3.10/644-bridge_optimize_netfilter_hooks.patch +++ b/target/linux/generic/patches-3.10/644-bridge_optimize_netfilter_hooks.patch @@ -38,7 +38,7 @@ netif_receive_skb); } -@@ -205,7 +205,7 @@ rx_handler_result_t br_handle_frame(stru +@@ -209,7 +209,7 @@ rx_handler_result_t br_handle_frame(stru } /* Deliver packet to local host only */ @@ -47,7 +47,16 @@ NULL, br_handle_local_finish)) { return RX_HANDLER_CONSUMED; /* consumed by filter */ } else { -@@ -230,7 +230,7 @@ forward: +@@ -224,7 +224,7 @@ forward: + if (!ether_addr_equal(p->br->dev->dev_addr, dest)) + goto drop; + +- if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, ++ if (BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, + br_handle_local_finish)) + break; + +@@ -246,7 +246,7 @@ forward: if (ether_addr_equal(p->br->dev->dev_addr, dest)) skb->pkt_type = PACKET_HOST; diff --git a/target/linux/generic/patches-3.9/120-bridge_allow_receiption_on_disabled_port.patch b/target/linux/generic/patches-3.9/120-bridge_allow_receiption_on_disabled_port.patch new file mode 100644 index 0000000000..5d1661c1b7 --- /dev/null +++ b/target/linux/generic/patches-3.9/120-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 +@@ -139,10 +139,14 @@ 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; + +- br_vlan_get_tag(skb, &vid); +- br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ if (p->state != BR_STATE_DISABLED) { ++ u16 vid = 0; ++ ++ br_vlan_get_tag(skb, &vid); ++ br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid); ++ } ++ + return 0; /* process further */ + } + +@@ -212,6 +216,18 @@ 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)) ++ goto drop; ++ ++ 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) { diff --git a/target/linux/generic/patches-3.9/644-bridge_optimize_netfilter_hooks.patch b/target/linux/generic/patches-3.9/644-bridge_optimize_netfilter_hooks.patch index 8204bba51b..986b3f843b 100644 --- a/target/linux/generic/patches-3.9/644-bridge_optimize_netfilter_hooks.patch +++ b/target/linux/generic/patches-3.9/644-bridge_optimize_netfilter_hooks.patch @@ -38,7 +38,7 @@ netif_receive_skb); } -@@ -205,7 +205,7 @@ rx_handler_result_t br_handle_frame(stru +@@ -209,7 +209,7 @@ rx_handler_result_t br_handle_frame(stru } /* Deliver packet to local host only */ @@ -47,7 +47,16 @@ NULL, br_handle_local_finish)) { return RX_HANDLER_CONSUMED; /* consumed by filter */ } else { -@@ -230,7 +230,7 @@ forward: +@@ -224,7 +224,7 @@ forward: + if (!ether_addr_equal(p->br->dev->dev_addr, dest)) + goto drop; + +- if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, ++ if (BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, + br_handle_local_finish)) + break; + +@@ -246,7 +246,7 @@ forward: if (ether_addr_equal(p->br->dev->dev_addr, dest)) skb->pkt_type = PACKET_HOST; |