This is a note to let you know that I've just added the patch titled
vxlan: Use ip_tunnel_key flow flags in route lookups
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
vxlan-use-ip_tunnel_key-flow-flags-in-route-lookups.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7e2fb8bc7ef6c7a63ca95751b90162dece0b3f4c Mon Sep 17 00:00:00 2001
From: Paul Chaignon <paul@xxxxxxxxxxxxx>
Date: Mon, 25 Jul 2022 16:31:58 +0200
Subject: vxlan: Use ip_tunnel_key flow flags in route lookups
From: Paul Chaignon <paul@xxxxxxxxxxxxx>
commit 7e2fb8bc7ef6c7a63ca95751b90162dece0b3f4c upstream.
Use the new ip_tunnel_key field with the flow flags in the IPv4 route
lookups for the encapsulated packet. This will be used by the
bpf_skb_set_tunnel_key helper in a subsequent commit.
Signed-off-by: Paul Chaignon <paul@xxxxxxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Reviewed-by: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>
Acked-by: Martin KaFai Lau <kafai@xxxxxx>
Link: https://lore.kernel.org/bpf/1ffc95c3d60182fd5ec0cf6602083f8f68afe98f.1658759380.git.paul@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/vxlan/vxlan_core.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2243,7 +2243,7 @@ static struct rtable *vxlan_get_route(st
struct vxlan_sock *sock4,
struct sk_buff *skb, int oif, u8 tos,
__be32 daddr, __be32 *saddr, __be16 dport, __be16 sport,
- struct dst_cache *dst_cache,
+ __u8 flow_flags, struct dst_cache *dst_cache,
const struct ip_tunnel_info *info)
{
bool use_cache = ip_tunnel_dst_cache_usable(skb, info);
@@ -2270,6 +2270,7 @@ static struct rtable *vxlan_get_route(st
fl4.saddr = *saddr;
fl4.fl4_dport = dport;
fl4.fl4_sport = sport;
+ fl4.flowi4_flags = flow_flags;
rt = ip_route_output_key(vxlan->net, &fl4);
if (!IS_ERR(rt)) {
@@ -2459,7 +2460,7 @@ static void vxlan_xmit_one(struct sk_buf
unsigned int pkt_len = skb->len;
__be16 src_port = 0, dst_port;
struct dst_entry *ndst = NULL;
- __u8 tos, ttl;
+ __u8 tos, ttl, flow_flags = 0;
int ifindex;
int err;
u32 flags = vxlan->cfg.flags;
@@ -2525,6 +2526,7 @@ static void vxlan_xmit_one(struct sk_buf
}
dst = &remote_ip;
dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port;
+ flow_flags = info->key.flow_flags;
vni = tunnel_id_to_key32(info->key.tun_id);
ifindex = 0;
dst_cache = &info->dst_cache;
@@ -2555,7 +2557,7 @@ static void vxlan_xmit_one(struct sk_buf
rt = vxlan_get_route(vxlan, dev, sock4, skb, ifindex, tos,
dst->sin.sin_addr.s_addr,
&local_ip.sin.sin_addr.s_addr,
- dst_port, src_port,
+ dst_port, src_port, flow_flags,
dst_cache, info);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
@@ -3061,7 +3063,8 @@ static int vxlan_fill_metadata_dst(struc
rt = vxlan_get_route(vxlan, dev, sock4, skb, 0, info->key.tos,
info->key.u.ipv4.dst,
&info->key.u.ipv4.src, dport, sport,
- &info->dst_cache, info);
+ info->key.flow_flags, &info->dst_cache,
+ info);
if (IS_ERR(rt))
return PTR_ERR(rt);
ip_rt_put(rt);
Patches currently in stable-queue which might be from paul@xxxxxxxxxxxxx are
queue-5.19/bpf-set-flow-flag-to-allow-any-source-ip-in-bpf_tunn.patch
queue-5.19/ip_tunnels-add-new-flow-flags-field-to-ip_tunnel_key.patch
queue-5.19/vxlan-use-ip_tunnel_key-flow-flags-in-route-lookups.patch
queue-5.19/geneve-use-ip_tunnel_key-flow-flags-in-route-lookups.patch
