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| author | KOVACS Krisztian <hidden@sch.bme.hu> | 2008-10-01 07:41:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-01 07:41:00 -0700 |
| commit | 88ef4a5a78e63420dd1dd770f1bd1dc198926b04 (patch) | |
| tree | 42409d6d26fb6f954c501ac156d34265437d18f9 /include/net | |
| parent | 79876874ce20d37ecdc7f481ebf142466999152f (diff) | |
| download | kernel-crypto-88ef4a5a78e63420dd1dd770f1bd1dc198926b04.tar.gz kernel-crypto-88ef4a5a78e63420dd1dd770f1bd1dc198926b04.tar.xz kernel-crypto-88ef4a5a78e63420dd1dd770f1bd1dc198926b04.zip | |
tcp: Handle TCP SYN+ACK/ACK/RST transparency
The TCP stack sends out SYN+ACK/ACK/RST reply packets in response to
incoming packets. The non-local source address check on output bites
us again, as replies for transparently redirected traffic won't have a
chance to leave the node.
This patch selectively sets the FLOWI_FLAG_ANYSRC flag when doing the
route lookup for those replies. Transparent replies are enabled if the
listening socket has the transparent socket flag set.
Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/inet_sock.h | 8 | ||||
| -rw-r--r-- | include/net/ip.h | 3 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h index 139b78b4dfe..dced3f64f97 100644 --- a/include/net/inet_sock.h +++ b/include/net/inet_sock.h @@ -72,7 +72,8 @@ struct inet_request_sock { sack_ok : 1, wscale_ok : 1, ecn_ok : 1, - acked : 1; + acked : 1, + no_srccheck: 1; struct ip_options *opt; }; @@ -204,4 +205,9 @@ static inline struct request_sock *inet_reqsk_alloc(struct request_sock_ops *ops return req; } +static inline __u8 inet_sk_flowi_flags(const struct sock *sk) +{ + return inet_sk(sk)->transparent ? FLOWI_FLAG_ANYSRC : 0; +} + #endif /* _INET_SOCK_H */ diff --git a/include/net/ip.h b/include/net/ip.h index 250e6ef025a..90b27f634b7 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -140,12 +140,15 @@ static inline void ip_tr_mc_map(__be32 addr, char *buf) struct ip_reply_arg { struct kvec iov[1]; + int flags; __wsum csum; int csumoffset; /* u16 offset of csum in iov[0].iov_base */ /* -1 if not needed */ int bound_dev_if; }; +#define IP_REPLY_ARG_NOSRCCHECK 1 + void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg, unsigned int len); |