kernel: update and move net bridge patch to backport folder

Update patch 642-net-bridge-locally-receive-all-multicast-packets-if-.patch to upstream version
and move to backport folder as 625-v6.16-net-bridge-locally-receive-all-multicast-packets-if-.patch
because kernel 6.16 already includes it.

Link: https://lore.kernel.org/all/OSZPR01MB8434308370ACAFA90A22980798B32@OSZPR01MB8434.jpnprd01.prod.outlook.com/
Link: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a496d2f0fd612ab9e10700afe00dc9267bad788b

Signed-off-by: Mieczyslaw Nalewaj <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19875
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/generic/backport-6.12/625-v6.16-net-bridge-locally-receive-all-multicast-packets-if-.patch

@@ -0,0 +1,41 @@
+From a496d2f0fd612ab9e10700afe00dc9267bad788b Mon Sep 17 00:00:00 2001
+From: Shengyu Qu <[email protected]>
+Date: Mon, 14 Apr 2025 18:56:01 +0800
+Subject: 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.
+
+OpenWrt uses a user space daemon for DHCPv6/RA/NDP handling, and in relay
+mode it sets the ALLMULTI flag in order to receive all relevant queries on
+the network.
+
+This works for normal network interfaces and non-snooping bridges, but not
+snooping bridges (unless multicast routing is enabled).
+
+Reported-by: Felix Fietkau <[email protected]>
+Closes: https://github.com/openwrt/openwrt/issues/15857#issuecomment-2662851243
+Signed-off-by: Shengyu Qu <[email protected]>
+Reviewed-by: Ido Schimmel <[email protected]>
+Acked-by: Nikolay Aleksandrov <[email protected]>
+Link: https://patch.msgid.link/OSZPR01MB8434308370ACAFA90A22980798B32@OSZPR01MB8434.jpnprd01.prod.outlook.com
+Signed-off-by: Jakub Kicinski <[email protected]>
+---
+ net/bridge/br_input.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -184,7 +184,8 @@ int br_handle_frame_finish(struct net *n
+ 		if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) &&
+ 		    br_multicast_querier_exists(brmctx, eth_hdr(skb), mdst)) {
+ 			if ((mdst && mdst->host_joined) ||
+-			    br_multicast_is_router(brmctx, skb)) {
++			    br_multicast_is_router(brmctx, skb) ||
++			    br->dev->flags & IFF_ALLMULTI) {
+ 				local_rcv = true;
+ 				DEV_STATS_INC(br->dev, multicast);
+ 			}

target/linux/generic/backport-6.6/625-v6.16-net-bridge-locally-receive-all-multicast-packets-if-.patch

@@ -0,0 +1,41 @@
+From a496d2f0fd612ab9e10700afe00dc9267bad788b Mon Sep 17 00:00:00 2001
+From: Shengyu Qu <[email protected]>
+Date: Mon, 14 Apr 2025 18:56:01 +0800
+Subject: 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.
+
+OpenWrt uses a user space daemon for DHCPv6/RA/NDP handling, and in relay
+mode it sets the ALLMULTI flag in order to receive all relevant queries on
+the network.
+
+This works for normal network interfaces and non-snooping bridges, but not
+snooping bridges (unless multicast routing is enabled).
+
+Reported-by: Felix Fietkau <[email protected]>
+Closes: https://github.com/openwrt/openwrt/issues/15857#issuecomment-2662851243
+Signed-off-by: Shengyu Qu <[email protected]>
+Reviewed-by: Ido Schimmel <[email protected]>
+Acked-by: Nikolay Aleksandrov <[email protected]>
+Link: https://patch.msgid.link/OSZPR01MB8434308370ACAFA90A22980798B32@OSZPR01MB8434.jpnprd01.prod.outlook.com
+Signed-off-by: Jakub Kicinski <[email protected]>
+---
+ net/bridge/br_input.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -184,7 +184,8 @@ int br_handle_frame_finish(struct net *n
+ 		if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) &&
+ 		    br_multicast_querier_exists(brmctx, eth_hdr(skb), mdst)) {
+ 			if ((mdst && mdst->host_joined) ||
+-			    br_multicast_is_router(brmctx, skb)) {
++			    br_multicast_is_router(brmctx, skb) ||
++			    br->dev->flags & IFF_ALLMULTI) {
+ 				local_rcv = true;
+ 				DEV_STATS_INC(br->dev, multicast);
+ 			}

target/linux/generic/pending-6.12/150-bridge_allow_receiption_on_disabled_port.patch

@@ -15,7 +15,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
 
 --- a/net/bridge/br_input.c
 +++ b/net/bridge/br_input.c
-@@ -244,6 +244,9 @@ static void __br_handle_local_finish(str
+@@ -245,6 +245,9 @@ static void __br_handle_local_finish(str
  /* note: already called with rcu_read_lock */
  static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
  {
@@ -25,7 +25,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
  	__br_handle_local_finish(skb);
  
  	/* return 1 to signal the okfn() was called so it's ok to use the skb */
-@@ -415,6 +418,17 @@ forward:
+@@ -416,6 +419,17 @@ forward:
  		goto defer_stp_filtering;
  
  	switch (p->state) {

target/linux/generic/pending-6.12/642-net-bridge-locally-receive-all-multicast-packets-if-.patch

@@ -1,24 +0,0 @@
-From: Felix Fietkau <[email protected]>
-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 <[email protected]>
----
-
---- 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;
- 		}
- 	}
- 

target/linux/generic/pending-6.12/710-bridge-add-knob-for-filtering-rx-tx-BPDU-pack.patch

@@ -45,7 +45,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
  			if (!(p->flags & BR_BCAST_FLOOD) && skb->dev != br->dev)
 --- a/net/bridge/br_input.c
 +++ b/net/bridge/br_input.c
-@@ -369,6 +369,8 @@ static rx_handler_result_t br_handle_fra
+@@ -368,6 +368,8 @@ static rx_handler_result_t br_handle_fra
  		fwd_mask |= p->group_fwd_mask;
  		switch (dest[5]) {
  		case 0x00:	/* Bridge Group Address */

target/linux/generic/pending-6.6/150-bridge_allow_receiption_on_disabled_port.patch

@@ -15,7 +15,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
 
 --- a/net/bridge/br_input.c
 +++ b/net/bridge/br_input.c
-@@ -244,6 +244,9 @@ static void __br_handle_local_finish(str
+@@ -245,6 +245,9 @@ static void __br_handle_local_finish(str
  /* note: already called with rcu_read_lock */
  static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
  {
@@ -25,7 +25,7 @@ Signed-off-by: Felix Fietkau <[email protected]>
  	__br_handle_local_finish(skb);
  
  	/* return 1 to signal the okfn() was called so it's ok to use the skb */
-@@ -415,6 +418,17 @@ forward:
+@@ -416,6 +419,17 @@ forward:
  		goto defer_stp_filtering;
  
  	switch (p->state) {

target/linux/generic/pending-6.6/642-net-bridge-locally-receive-all-multicast-packets-if-.patch

@@ -1,24 +0,0 @@
-From: Felix Fietkau <[email protected]>
-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 <[email protected]>
----
-
---- 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;
- 		}
- 	}
- 

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 <[email protected]>
  			if (!(p->flags & BR_BCAST_FLOOD) && skb->dev != br->dev)
 --- a/net/bridge/br_input.c
 +++ b/net/bridge/br_input.c
-@@ -369,6 +369,8 @@ static rx_handler_result_t br_handle_fra
+@@ -368,6 +368,8 @@ static rx_handler_result_t br_handle_fra
  		fwd_mask |= p->group_fwd_mask;
  		switch (dest[5]) {
  		case 0x00:	/* Bridge Group Address */