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Commit d52344a7 authored by David S. Miller's avatar David S. Miller
Browse files

ppp: Use SKB queue abstraction interfaces in fragment processing. 



No more direct references to SKB queue and list implementation
details.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 686a2955

drivers/net/ppp_generic.c

+16 −15
Original line number Diff line number Diff line
@@ -1998,7 +1998,7 @@ ppp_mp_reconstruct(struct ppp *ppp) 
	u32 seq = ppp->nextseq;

	u32 minseq = ppp->minseq;

	struct sk_buff_head *list = &ppp->mrq;

	struct sk_buff *p, *next;

	struct sk_buff *p, *tmp;

	struct sk_buff *head, *tail;

	struct sk_buff *skb = NULL;

	int lost = 0, len = 0;
@@ -2007,14 +2007,15 @@ ppp_mp_reconstruct(struct ppp *ppp) 
		return NULL;

	head = list->next;

	tail = NULL;

	for (p = head; p != (struct sk_buff *) list; p = next) {

		next = p->next;

	skb_queue_walk_safe(list, p, tmp) {

	again:

		if (seq_before(PPP_MP_CB(p)->sequence, seq)) {

			/* this can't happen, anyway ignore the skb */

			netdev_err(ppp->dev, "ppp_mp_reconstruct bad "

				   "seq %u < %u\n",

				   PPP_MP_CB(p)->sequence, seq);

			head = next;

			__skb_unlink(p, list);

			kfree_skb(p);

			continue;

		}

		if (PPP_MP_CB(p)->sequence != seq) {
@@ -2026,8 +2027,7 @@ ppp_mp_reconstruct(struct ppp *ppp) 
			lost = 1;

			seq = seq_before(minseq, PPP_MP_CB(p)->sequence)?

				minseq + 1: PPP_MP_CB(p)->sequence;

			next = p;

			continue;

			goto again;

		}



		/*
@@ -2067,9 +2067,17 @@ ppp_mp_reconstruct(struct ppp *ppp) 
		 * and we haven't found a complete valid packet yet,

		 * we can discard up to and including this fragment.

		 */

		if (PPP_MP_CB(p)->BEbits & E)

			head = next;

		if (PPP_MP_CB(p)->BEbits & E) {

			struct sk_buff *tmp2;



			skb_queue_reverse_walk_from_safe(list, p, tmp2) {

				__skb_unlink(p, list);

				kfree_skb(p);

			}

			head = skb_peek(list);

			if (!head)

				break;

		}

		++seq;

	}
@@ -2110,13 +2118,6 @@ ppp_mp_reconstruct(struct ppp *ppp) 
		}



		ppp->nextseq = PPP_MP_CB(tail)->sequence + 1;

		head = tail->next;

	}



	/* Discard all the skbuffs that we can't use. */

	while ((p = list->next) != head) {

		__skb_unlink(p, list);

		kfree_skb(p);

	}



	return skb;