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| author | Felix Fietkau | 2025-02-17 11:29:27 +0000 |
|---|---|---|
| committer | Felix Fietkau | 2025-02-17 11:30:12 +0000 |
| commit | 38c21271d2b5749f135d662c2b28ef2bbdf607b8 (patch) | |
| tree | 0c98b585330d3fc451d47d5f28a03332e1499074 | |
| parent | 51d485ef315c943885216865582741fe4bbdf633 (diff) | |
| download | openwrt-38c21271d2b5749f135d662c2b28ef2bbdf607b8.tar.gz | |
kernel: receive all bridged multicast packets if IFF_ALLMULTI is set
Fixes issues with odhcpd, especially in relay mode
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2 files changed, 25 insertions, 1 deletions
diff --git a/target/linux/generic/pending-6.6/642-net-bridge-locally-receive-all-multicast-packets-if-.patch b/target/linux/generic/pending-6.6/642-net-bridge-locally-receive-all-multicast-packets-if-.patch new file mode 100644 index 0000000000..98edb315b1 --- /dev/null +++ b/target/linux/generic/pending-6.6/642-net-bridge-locally-receive-all-multicast-packets-if-.patch @@ -0,0 +1,24 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Mon, 17 Feb 2025 12:21:08 +0100 +Subject: [PATCH] net: bridge: locally receive all multicast packets if + IFF_ALLMULTI is set + +If multicast snooping is enabled, multicast packets may not always end up on +the local bridge interface, if the host is not a member of the multicast +group. Similar to how IFF_PROMISC allows all packets to be received locally, +let IFF_ALLMULTI allow all multicast packets to be received. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/bridge/br_input.c ++++ b/net/bridge/br_input.c +@@ -152,6 +152,8 @@ int br_handle_frame_finish(struct net *n + pkt_type = BR_PKT_MULTICAST; + if (br_multicast_rcv(&brmctx, &pmctx, vlan, skb, vid)) + goto drop; ++ if (br->dev->flags & IFF_ALLMULTI) ++ local_rcv = true; + } + } + diff --git a/target/linux/generic/pending-6.6/710-bridge-add-knob-for-filtering-rx-tx-BPDU-pack.patch b/target/linux/generic/pending-6.6/710-bridge-add-knob-for-filtering-rx-tx-BPDU-pack.patch index 96e1a19db4..31e29c447e 100644 --- a/target/linux/generic/pending-6.6/710-bridge-add-knob-for-filtering-rx-tx-BPDU-pack.patch +++ b/target/linux/generic/pending-6.6/710-bridge-add-knob-for-filtering-rx-tx-BPDU-pack.patch @@ -45,7 +45,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name> if (!(p->flags & BR_BCAST_FLOOD) && skb->dev != br->dev) --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c -@@ -367,6 +367,8 @@ static rx_handler_result_t br_handle_fra +@@ -369,6 +369,8 @@ static rx_handler_result_t br_handle_fra fwd_mask |= p->group_fwd_mask; switch (dest[5]) { case 0x00: /* Bridge Group Address */ |