2455 	struct sk_buff *next_skb = tcp_write_queue_next(sk, skb);  in tcp_collapse_retrans()  local
2459 	next_skb_size = next_skb->len;  in tcp_collapse_retrans()
2461 	BUG_ON(tcp_skb_pcount(skb) != 1 || tcp_skb_pcount(next_skb) != 1);  in tcp_collapse_retrans()
2463 	tcp_highest_sack_combine(sk, next_skb, skb);  in tcp_collapse_retrans()
2465 	tcp_unlink_write_queue(next_skb, sk);  in tcp_collapse_retrans()
2467 	skb_copy_from_linear_data(next_skb, skb_put(skb, next_skb_size),  in tcp_collapse_retrans()
2470 	if (next_skb->ip_summed == CHECKSUM_PARTIAL)  in tcp_collapse_retrans()
2474 		skb->csum = csum_block_add(skb->csum, next_skb->csum, skb_size);  in tcp_collapse_retrans()
2477 	TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(next_skb)->end_seq;  in tcp_collapse_retrans()
2480 	TCP_SKB_CB(skb)->tcp_flags |= TCP_SKB_CB(next_skb)->tcp_flags;  in tcp_collapse_retrans()
2485 	TCP_SKB_CB(skb)->sacked |= TCP_SKB_CB(next_skb)->sacked & TCPCB_EVER_RETRANS;  in tcp_collapse_retrans()
2489 	if (next_skb == tp->retransmit_skb_hint)  in tcp_collapse_retrans()
2492 	tcp_adjust_pcount(sk, next_skb, tcp_skb_pcount(next_skb));  in tcp_collapse_retrans()
2494 	sk_wmem_free_skb(sk, next_skb);  in tcp_collapse_retrans()