diff options
| author | Haishuang Yan <yanhaishuang@cmss.chinamobile.com> | 2016-05-11 10:48:32 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-12 20:53:58 (GMT) |
| commit | da73b4e9538b9be96498241ab3f13eab94181e96 (patch) | |
| tree | b22bf974053d15e37a25aa8dcf9c18a51bbd0181 | |
| parent | 23f72215bc030d1eea437713abfef91c635e2e1f (diff) | |
| download | linux-da73b4e9538b9be96498241ab3f13eab94181e96.tar.xz | |
gre: Fix wrong tpi->proto in WCCP
When dealing with WCCP in gre6 tunnel, it sets the wrong tpi->protocol,
that is, ETH_P_IP instead of ETH_P_IPV6 for the encapuslated traffic.
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/gre.h | 2 | ||||
| -rw-r--r-- | net/ipv4/gre_demux.c | 6 | ||||
| -rw-r--r-- | net/ipv4/ip_gre.c | 4 | ||||
| -rw-r--r-- | net/ipv6/ip6_gre.c | 2 |
4 files changed, 7 insertions, 7 deletions
diff --git a/include/net/gre.h b/include/net/gre.h index a14093c..5dce30a 100644 --- a/include/net/gre.h +++ b/include/net/gre.h @@ -26,7 +26,7 @@ int gre_del_protocol(const struct gre_protocol *proto, u8 version); struct net_device *gretap_fb_dev_create(struct net *net, const char *name, u8 name_assign_type); int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi, - bool *csum_err); + bool *csum_err, __be16 proto); static inline int gre_calc_hlen(__be16 o_flags) { diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c index d78e2ee..4c39f4f 100644 --- a/net/ipv4/gre_demux.c +++ b/net/ipv4/gre_demux.c @@ -62,7 +62,7 @@ EXPORT_SYMBOL_GPL(gre_del_protocol); /* Fills in tpi and returns header length to be pulled. */ int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi, - bool *csum_err) + bool *csum_err, __be16 proto) { const struct gre_base_hdr *greh; __be32 *options; @@ -109,11 +109,11 @@ int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi, tpi->seq = 0; } /* WCCP version 1 and 2 protocol decoding. - * - Change protocol to IP + * - Change protocol to IPv4/IPv6 * - When dealing with WCCPv2, Skip extra 4 bytes in GRE header */ if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) { - tpi->proto = htons(ETH_P_IP); + tpi->proto = proto; if ((*(u8 *)options & 0xF0) != 0x40) hdr_len += 4; } diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 2b267e7..aaeb478 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -222,7 +222,7 @@ static void gre_err(struct sk_buff *skb, u32 info) struct tnl_ptk_info tpi; bool csum_err = false; - if (gre_parse_header(skb, &tpi, &csum_err) < 0) { + if (gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP)) < 0) { if (!csum_err) /* ignore csum errors. */ return; } @@ -335,7 +335,7 @@ static int gre_rcv(struct sk_buff *skb) } #endif - hdr_len = gre_parse_header(skb, &tpi, &csum_err); + hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP)); if (hdr_len < 0) goto drop; diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 3c25fe6..4541fa5 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -468,7 +468,7 @@ static int gre_rcv(struct sk_buff *skb) bool csum_err = false; int hdr_len; - hdr_len = gre_parse_header(skb, &tpi, &csum_err); + hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IPV6)); if (hdr_len < 0) goto drop; |