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| author |   Xin Long <lucien.xin@gmail.com> | 2019-11-06 17:01:03 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-11-06 21:14:21 -0800 |
| commit | f52f11ec8ad49f697e5158ff87c39b44dab45f51 (patch) | |
| tree | 7c3cae3491a797602578604ced2666e8a1374a2d /net/ipv4/ip_tunnel_core.c | |
| parent | tipc: reduce sensitive to retransmit failures (diff) | |
| download | linux-dev-f52f11ec8ad49f697e5158ff87c39b44dab45f51.tar.xz linux-dev-f52f11ec8ad49f697e5158ff87c39b44dab45f51.zip | |
lwtunnel: add options process for arp request
Without options copied to the dst tun_info in iptunnel_metadata_reply()
called by arp_process for handling arp_request, the generated arp_reply
packet may be dropped or sent out with wrong options for some tunnels
like erspan and vxlan, and the traffic will break.
Fixes: 63d008a4e9ee ("ipv4: send arp replies to the correct tunnel")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_tunnel_core.c')
| -rw-r--r-- | net/ipv4/ip_tunnel_core.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index 1452a97914a0..10f08481b003 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -126,15 +126,14 @@ struct metadata_dst *iptunnel_metadata_reply(struct metadata_dst *md, if (!md || md->type != METADATA_IP_TUNNEL || md->u.tun_info.mode & IP_TUNNEL_INFO_TX) - return NULL; - res = metadata_dst_alloc(0, METADATA_IP_TUNNEL, flags); + src = &md->u.tun_info; + res = metadata_dst_alloc(src->options_len, METADATA_IP_TUNNEL, flags); if (!res) return NULL; dst = &res->u.tun_info; - src = &md->u.tun_info; dst->key.tun_id = src->key.tun_id; if (src->mode & IP_TUNNEL_INFO_IPV6) memcpy(&dst->key.u.ipv6.dst, &src->key.u.ipv6.src, @@ -143,6 +142,8 @@ struct metadata_dst *iptunnel_metadata_reply(struct metadata_dst *md, dst->key.u.ipv4.dst = src->key.u.ipv4.src; dst->key.tun_flags = src->key.tun_flags; dst->mode = src->mode | IP_TUNNEL_INFO_TX; + ip_tunnel_info_opts_set(dst, ip_tunnel_info_opts(src), + src->options_len, 0); return res; } |