From: Qing Deng <i@moy.cat>
To: "David S. Miller" <davem@davemloft.net>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
David Ahern <dsahern@kernel.org>,
Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ip6_tunnel: allow routing IPv4 traffic in NBMA mode
Date: Sun, 23 Jan 2022 14:00:00 +0800 [thread overview]
Message-ID: <20220123060000.GA12551@devbox> (raw)
Since IPv4 routes support IPv6 gateways now, we can route IPv4 traffic in
NBMA tunnels.
Signed-off-by: Qing Deng <i@moy.cat>
---
net/ipv6/ip6_tunnel.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index fe786df4f849..2bcffc3fc4ae 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1121,6 +1121,11 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
memcpy(&fl6->daddr, addr6, sizeof(fl6->daddr));
neigh_release(neigh);
+ } else if (skb->protocol == htons(ETH_P_IP)) {
+ struct rtable *rt = skb_rtable(skb);
+
+ if (rt->rt_gw_family == AF_INET6)
+ memcpy(&fl6->daddr, &rt->rt_gw6, sizeof(fl6->daddr));
}
} else if (t->parms.proto != 0 && !(t->parms.flags &
(IP6_TNL_F_USE_ORIG_TCLASS |
base-commit: 1f40caa080474d0420e0b0e6c896e455acb6e236
--
2.32.0 (Apple Git-132)
next reply other threads:[~2022-01-23 6:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-23 6:00 Qing Deng [this message]
2022-01-25 18:07 ` [PATCH] ip6_tunnel: allow routing IPv4 traffic in NBMA mode Jakub Kicinski
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