tcp: rename tcp_v4_err() skb parameter

This essentially reverts 4d1a2d9ec1c1 ("Revert Backoff [v3]:
Rename skb to icmp_skb in tcp_v4_err()")

Now we have tcp_ld_RTO_revert() helper, we can use the usual
name for sk_buff parameter, so that tcp_v4_err() and
tcp_v6_err() use similar names.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f32dcad..4eef5b8 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -458,23 +458,23 @@ static void tcp_ld_RTO_revert(struct sock *sk, u32 seq)
  *
  */
 
-int tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
+int tcp_v4_err(struct sk_buff *skb, u32 info)
 {
-       const struct iphdr *iph = (const struct iphdr *)icmp_skb->data;
-       struct tcphdr *th = (struct tcphdr *)(icmp_skb->data + (iph->ihl << 2));
+       const struct iphdr *iph = (const struct iphdr *)skb->data;
+       struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
        struct tcp_sock *tp;
        struct inet_sock *inet;
-       const int type = icmp_hdr(icmp_skb)->type;
-       const int code = icmp_hdr(icmp_skb)->code;
+       const int type = icmp_hdr(skb)->type;
+       const int code = icmp_hdr(skb)->code;
        struct sock *sk;
        struct request_sock *fastopen;
        u32 seq, snd_una;
        int err;
-       struct net *net = dev_net(icmp_skb->dev);
+       struct net *net = dev_net(skb->dev);
 
        sk = __inet_lookup_established(net, &tcp_hashinfo, iph->daddr,
                                       th->dest, iph->saddr, ntohs(th->source),
-                                      inet_iif(icmp_skb), 0);
+                                      inet_iif(skb), 0);
        if (!sk) {
                __ICMP_INC_STATS(net, ICMP_MIB_INERRORS);
                return -ENOENT;
@@ -524,7 +524,7 @@ int tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
        switch (type) {
        case ICMP_REDIRECT:
                if (!sock_owned_by_user(sk))
-                       do_redirect(icmp_skb, sk);
+                       do_redirect(skb, sk);
                goto out;
        case ICMP_SOURCE_QUENCH:
                /* Just silently ignore these. */
@@ -578,7 +578,7 @@ int tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
                if (fastopen && !fastopen->sk)
                        break;
 
-               ip_icmp_error(sk, icmp_skb, err, th->dest, info, (u8 *)th);
+               ip_icmp_error(sk, skb, err, th->dest, info, (u8 *)th);
 
                if (!sock_owned_by_user(sk)) {
                        sk->sk_err = err;