tcp: remove redundant argument from tcp_rcv_established()

The last (4th) argument of tcp_rcv_established() is redundant as it
always equals to skb->len and the skb itself is always passed as 2th
agrument. There is no reason to have it.

Signed-off-by: Ilya V. Matveychikov <matvejchikov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 4f056ea..12d6833 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -362,7 +362,7 @@ void tcp_delack_timer_handler(struct sock *sk);
 int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg);
 int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb);
 void tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                        const struct tcphdr *th, unsigned int len);
+                        const struct tcphdr *th);
 void tcp_rcv_space_adjust(struct sock *sk);
 int tcp_twsk_unique(struct sock *sk, struct sock *sktw, void *twp);
 void tcp_twsk_destructor(struct sock *sk);

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 2920e0c..adc3f3e 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5358,8 +5358,9 @@ discard:
  *     tcp_data_queue when everything is OK.
  */
 void tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                        const struct tcphdr *th, unsigned int len)
+                        const struct tcphdr *th)
 {
+       unsigned int len = skb->len;
        struct tcp_sock *tp = tcp_sk(sk);
 
        tcp_mstamp_refresh(tp);

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index a20e7f0..3a19ea2 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1458,7 +1458,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
                                sk->sk_rx_dst = NULL;
                        }
                }
-               tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len);
+               tcp_rcv_established(sk, skb, tcp_hdr(skb));
                return 0;
        }
 

diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index f6c50af..697f4c6 100644 (file)
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -105,8 +105,9 @@ static inline int tcp_probe_avail(void)
  * Note: arguments must match tcp_rcv_established()!
  */
 static void jtcp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                                const struct tcphdr *th, unsigned int len)
+                                const struct tcphdr *th)
 {
+       unsigned int len = skb->len;
        const struct tcp_sock *tp = tcp_sk(sk);
        const struct inet_sock *inet = inet_sk(sk);
 
@@ -145,7 +146,7 @@ static void jtcp_rcv_established(struct sock *sk, struct sk_buff *skb,
                                BUG();
                        }
 
-                       p->length = skb->len;
+                       p->length = len;
                        p->snd_nxt = tp->snd_nxt;
                        p->snd_una = tp->snd_una;
                        p->snd_cwnd = tp->snd_cwnd;

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 2521690..90a3257 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1296,7 +1296,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
                        }
                }
 
-               tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len);
+               tcp_rcv_established(sk, skb, tcp_hdr(skb));
                if (opt_skb)
                        goto ipv6_pktoptions;
                return 0;