diff options
| author | Cong Wang <cwang@twopensource.com> | 2014-10-15 23:33:21 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-17 18:02:57 +0200 |
| commit | e25f866fbc8a4bf387b5dbe8e25aa5b07e55c74f (patch) | |
| tree | df2c77e0b95e195dc496bba98155e2c62b9a80cd /net/ipv4/syncookies.c | |
| parent | ipv4: call __ip_options_echo() in cookie_v4_check() (diff) | |
| download | linux-e25f866fbc8a4bf387b5dbe8e25aa5b07e55c74f.tar.xz linux-e25f866fbc8a4bf387b5dbe8e25aa5b07e55c74f.zip | |
ipv4: share tcp_v4_save_options() with cookie_v4_check()
cookie_v4_check() allocates ip_options_rcu in the same way
with tcp_v4_save_options(), we can just make it a helper function.
Cc: Krzysztof Kolasa <kkolasa@winsoft.pl>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/syncookies.c')
| -rw-r--r-- | net/ipv4/syncookies.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 7e7401cdb9d7..c68d0a1a468e 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -317,15 +317,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, /* We throwed the options of the initial SYN away, so we hope * the ACK carries the same options again (see RFC1122 4.2.3.8) */ - if (opt && opt->optlen) { - int opt_size = sizeof(struct ip_options_rcu) + opt->optlen; - - ireq->opt = kmalloc(opt_size, GFP_ATOMIC); - if (ireq->opt != NULL && __ip_options_echo(&ireq->opt->opt, skb, opt)) { - kfree(ireq->opt); - ireq->opt = NULL; - } - } + ireq->opt = tcp_v4_save_options(skb); if (security_inet_conn_request(sk, skb, req)) { reqsk_free(req); |