From 39f57f6799cdd437277122d4cd1c470c08f527c0 Mon Sep 17 00:00:00 2001 From: William Tu Date: Mon, 5 Feb 2018 13:35:35 -0800 Subject: [PATCH] net: erspan: fix erspan config overwrite When an erspan tunnel device receives an erpsan packet with different tunnel metadata (ex: version, index, hwid, direction), existing code overwrites the tunnel device's erspan configuration with the received packet's metadata. The patch fixes it. Fixes: 1a66a836da63 ("gre: add collect_md mode to ERSPAN tunnel") Fixes: f551c91de262 ("net: erspan: introduce erspan v2 for ip_gre") Fixes: ef7baf5e083c ("ip6_gre: add ip6 erspan collect_md mode") Fixes: 94d7d8f29287 ("ip6_gre: add erspan v2 support") Signed-off-by: William Tu Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 9 --------- net/ipv6/ip6_gre.c | 9 --------- 2 files changed, 18 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 9b50eddd1882..45d97e9b2759 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -322,15 +322,6 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi, info = &tun_dst->u.tun_info; info->key.tun_flags |= TUNNEL_ERSPAN_OPT; info->options_len = sizeof(*md); - } else { - tunnel->erspan_ver = ver; - if (ver == 1) { - tunnel->index = ntohl(pkt_md->u.index); - } else { - tunnel->dir = pkt_md->u.md2.dir; - tunnel->hwid = get_hwid(&pkt_md->u.md2); - } - } skb_reset_mac_header(skb); diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 50913dbd0612..3c353125546d 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -562,15 +562,6 @@ static int ip6erspan_rcv(struct sk_buff *skb, int gre_hdr_len, ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); } else { - tunnel->parms.erspan_ver = ver; - - if (ver == 1) { - tunnel->parms.index = ntohl(pkt_md->u.index); - } else { - tunnel->parms.dir = pkt_md->u.md2.dir; - tunnel->parms.hwid = get_hwid(&pkt_md->u.md2); - } - ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error); } -- 2.30.2