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Commit 968d7018 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

ppp: avoid false drop_monitor false positives 



Call consume_skb() in place of kfree_skb() were appropriate.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a50feda5

drivers/net/ppp/ppp_async.c

+1 −1
Original line number Diff line number Diff line
@@ -613,7 +613,7 @@ ppp_async_encode(struct asyncppp *ap) 
	*buf++ = PPP_FLAG;

	ap->olim = buf;



	kfree_skb(ap->tpkt);

	consume_skb(ap->tpkt);

	ap->tpkt = NULL;

	return 1;

}

drivers/net/ppp/ppp_generic.c

+7 −7
Original line number Diff line number Diff line
@@ -1092,13 +1092,13 @@ pad_compress_skb(struct ppp *ppp, struct sk_buff *skb) 
				   new_skb->data, skb->len + 2,

				   compressor_skb_size);

	if (len > 0 && (ppp->flags & SC_CCP_UP)) {

		kfree_skb(skb);

		consume_skb(skb);

		skb = new_skb;

		skb_put(skb, len);

		skb_pull(skb, 2);	/* pull off A/C bytes */

	} else if (len == 0) {

		/* didn't compress, or CCP not up yet */

		kfree_skb(new_skb);

		consume_skb(new_skb);

		new_skb = skb;

	} else {

		/*
@@ -1112,7 +1112,7 @@ pad_compress_skb(struct ppp *ppp, struct sk_buff *skb) 
		if (net_ratelimit())

			netdev_err(ppp->dev, "ppp: compressor dropped pkt\n");

		kfree_skb(skb);

		kfree_skb(new_skb);

		consume_skb(new_skb);

		new_skb = NULL;

	}

	return new_skb;
@@ -1178,7 +1178,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) 
				    !(ppp->flags & SC_NO_TCP_CCID));

		if (cp == skb->data + 2) {

			/* didn't compress */

			kfree_skb(new_skb);

			consume_skb(new_skb);

		} else {

			if (cp[0] & SL_TYPE_COMPRESSED_TCP) {

				proto = PPP_VJC_COMP;
@@ -1187,7 +1187,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) 
				proto = PPP_VJC_UNCOMP;

				cp[0] = skb->data[2];

			}

			kfree_skb(skb);

			consume_skb(skb);

			skb = new_skb;

			cp = skb_put(skb, len + 2);

			cp[0] = 0;
@@ -1703,7 +1703,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb) 
			}

			skb_reserve(ns, 2);

			skb_copy_bits(skb, 0, skb_put(ns, skb->len), skb->len);

			kfree_skb(skb);

			consume_skb(skb);

			skb = ns;

		}

		else
@@ -1851,7 +1851,7 @@ ppp_decompress_frame(struct ppp *ppp, struct sk_buff *skb) 
			goto err;

		}



		kfree_skb(skb);

		consume_skb(skb);

		skb = ns;

		skb_put(skb, len);

		skb_pull(skb, 2);	/* pull off the A/C bytes */

drivers/net/ppp/ppp_synctty.c

+2 −2
Original line number Diff line number Diff line
@@ -588,7 +588,7 @@ ppp_sync_txmunge(struct syncppp *ap, struct sk_buff *skb) 
			skb_reserve(npkt,2);

			skb_copy_from_linear_data(skb,

				      skb_put(npkt, skb->len), skb->len);

			kfree_skb(skb);

			consume_skb(skb);

			skb = npkt;

		}

		skb_push(skb,2);
@@ -656,7 +656,7 @@ ppp_sync_push(struct syncppp *ap) 
			if (sent < ap->tpkt->len) {

				tty_stuffed = 1;

			} else {

				kfree_skb(ap->tpkt);

				consume_skb(ap->tpkt);

				ap->tpkt = NULL;

				clear_bit(XMIT_FULL, &ap->xmit_flags);

				done = 1;

drivers/net/ppp/pppoe.c

+4 −2
Original line number Diff line number Diff line
@@ -984,8 +984,10 @@ static int pppoe_recvmsg(struct kiocb *iocb, struct socket *sock, 
	if (skb) {

		total_len = min_t(size_t, total_len, skb->len);

		error = skb_copy_datagram_iovec(skb, 0, m->msg_iov, total_len);

		if (error == 0)

			error = total_len;

		if (error == 0) {

			consume_skb(skb);

			return total_len;

		}

	}



	kfree_skb(skb);

drivers/net/ppp/pptp.c

+1 −1
Original line number Diff line number Diff line
@@ -209,7 +209,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb) 
		}

		if (skb->sk)

			skb_set_owner_w(new_skb, skb->sk);

		kfree_skb(skb);

		consume_skb(skb);

		skb = new_skb;

	}