net: Remove __skb_insert() calls outside of skbuff internals.

This minor cleanup simplifies later changes which will convert
struct sk_buff and friends over to using struct list_head.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 85627f8..cbfe13d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4156,7 +4156,7 @@
 				skb1 = skb1->prev;
 			}
 		}
-		__skb_insert(skb, skb1, skb1->next, &tp->out_of_order_queue);
+		__skb_queue_after(&tp->out_of_order_queue, skb1, skb);
 
 		/* And clean segments covered by new one as whole. */
 		while ((skb1 = skb->next) !=
@@ -4254,7 +4254,7 @@
 		memcpy(nskb->head, skb->head, header);
 		memcpy(nskb->cb, skb->cb, sizeof(skb->cb));
 		TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(nskb)->end_seq = start;
-		__skb_insert(nskb, skb->prev, skb, list);
+		__skb_queue_before(list, skb, nskb);
 		skb_set_owner_r(nskb, sk);
 
 		/* Copy data, releasing collapsed skbs. */
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index 5061a26..7b23803 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -317,7 +317,7 @@
 	}
 
 	/* Insert before pos. */
-	__skb_insert(sctp_event2skb(event), pos->prev, pos, &ulpq->reasm);
+	__skb_queue_before(&ulpq->reasm, pos, sctp_event2skb(event));
 
 }
 
@@ -825,8 +825,7 @@
 
 
 	/* Insert before pos. */
-	__skb_insert(sctp_event2skb(event), pos->prev, pos, &ulpq->lobby);
-
+	__skb_queue_before(&ulpq->lobby, pos, sctp_event2skb(event));
 }
 
 static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,