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authorRongQing.Li <roy.qing.li@gmail.com>2012-07-01 17:18:59 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-05 03:11:15 -0700
commit43264e0bd96304092062c013b0612cc944508288 (patch)
tree49f253e1ca2afa4829f19bad3e9eaf05e412c97a /net/ipv6
parent30e80b55dd250b17c2570e234d2be34a0718063e (diff)
ipv6: remove unnecessary codes in tcp_ipv6.c
opt always equals np->opts, so it is meaningless to define opt, and check if opt does not equal np->opts and then try to free opt. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/tcp_ipv6.c16
1 files changed, 3 insertions, 13 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 9c06eafaf695..6cc67ed6c2e6 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -486,7 +486,6 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
struct inet6_request_sock *treq = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff * skb;
- struct ipv6_txoptions *opt = np->opt;
int err = -ENOMEM;
/* First, grab a route. */
@@ -500,13 +499,11 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
fl6->daddr = treq->rmt_addr;
skb_set_queue_mapping(skb, queue_mapping);
- err = ip6_xmit(sk, skb, fl6, opt, np->tclass);
+ err = ip6_xmit(sk, skb, fl6, np->opt, np->tclass);
err = net_xmit_eval(err);
}
done:
- if (opt && opt != np->opt)
- sock_kfree_s(sk, opt, opt->tot_len);
return err;
}
@@ -1229,7 +1226,6 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
struct inet_sock *newinet;
struct tcp_sock *newtp;
struct sock *newsk;
- struct ipv6_txoptions *opt;
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *key;
#endif
@@ -1290,7 +1286,6 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
}
treq = inet6_rsk(req);
- opt = np->opt;
if (sk_acceptq_is_full(sk))
goto out_overflow;
@@ -1359,11 +1354,8 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
but we make one more one thing there: reattach optmem
to newsk.
*/
- if (opt) {
- newnp->opt = ipv6_dup_options(newsk, opt);
- if (opt != np->opt)
- sock_kfree_s(sk, opt, opt->tot_len);
- }
+ if (np->opt)
+ newnp->opt = ipv6_dup_options(newsk, np->opt);
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt)
@@ -1410,8 +1402,6 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out_nonewsk:
- if (opt && opt != np->opt)
- sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);