[TCP]: Rename tcp_skb_psize() to tcp_skb_mss().

On request from Herbert Xu.
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tcp.h

@@ -1167,7 +1167,7 @@ static inline int tcp_skb_pcount(struct sk_buff *skb)
 }
 
 /* This is valid iff tcp_skb_pcount() > 1. */
-static inline int tcp_skb_psize(struct sk_buff *skb)
+static inline int tcp_skb_mss(struct sk_buff *skb)
 {
 	return skb_shinfo(skb)->tso_size;
 }

net/ipv4/tcp_input.c

@@ -2369,7 +2369,7 @@ static int tcp_tso_acked(struct sock *sk, struct sk_buff *skb,
 {
 	struct tcp_opt *tp = tcp_sk(sk);
 	struct tcp_skb_cb *scb = TCP_SKB_CB(skb); 
-	__u32 mss = tcp_skb_psize(skb);
+	__u32 mss = tcp_skb_mss(skb);
 	__u32 snd_una = tp->snd_una;
 	__u32 orig_seq, seq;
 	__u32 packets_acked = 0;