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| author |   Eric Dumazet <edumazet@google.com> | 2015-11-08 10:54:07 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-11-08 20:56:38 -0500 |
| commit | 54abc686c2d111e98228943a7e1e51cc256e35d9 (patch) | |
| tree | 5ce71817a67798bdd4a669a63b110d83952c2feb /include/net | |
| parent | Merge tag 'nfc-fixes-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-fixes (diff) | |
| download | linux-dev-54abc686c2d111e98228943a7e1e51cc256e35d9.tar.xz linux-dev-54abc686c2d111e98228943a7e1e51cc256e35d9.zip | |
net: add skb_to_full_sk() helper and use it in selinux_netlbl_skbuff_setsid()
Generalize selinux_skb_sk() added in commit 212cd0895330
("selinux: fix random read in selinux_ip_postroute_compat()")
so that we can use it other contexts.
Use it right away in selinux_netlbl_skbuff_setsid()
Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/inet_sock.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h index f5bf7310e334..2134e6d815bc 100644 --- a/include/net/inet_sock.h +++ b/include/net/inet_sock.h @@ -210,6 +210,18 @@ struct inet_sock { #define IP_CMSG_ORIGDSTADDR BIT(6) #define IP_CMSG_CHECKSUM BIT(7) +/* SYNACK messages might be attached to request sockets. + * Some places want to reach the listener in this case. + */ +static inline struct sock *skb_to_full_sk(const struct sk_buff *skb) +{ + struct sock *sk = skb->sk; + + if (sk && sk->sk_state == TCP_NEW_SYN_RECV) + sk = inet_reqsk(sk)->rsk_listener; + return sk; +} + static inline struct inet_sock *inet_sk(const struct sock *sk) { return (struct inet_sock *)sk; |