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kernel: add remaining kernel patch accidentally left out of r47963

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 47966
This commit is contained in:
Felix Fietkau 2015-12-23 11:40:53 +00:00
parent dbf2ec47a6
commit 10afb1bd8c
1 changed files with 45 additions and 0 deletions
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45
target/linux/generic/patches-3.18/081-06-ppp-don-t-set-sk_state-to-PPPOX_ZOMBIE-in-pppoe_disc.patch
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@ -0,0 +1,45 @@
From: Guillaume Nault <g.nault@alphalink.fr>
Date: Thu, 19 Nov 2015 12:52:56 +0100
Subject: [PATCH] ppp: don't set sk_state to PPPOX_ZOMBIE in pppoe_disc_rcv()
Since 287f3a943fef ("pppoe: Use workqueue to die properly when a PADT
is received"), pppoe_disc_rcv() disconnects the socket by scheduling
pppoe_unbind_sock_work(). This is enough to stop socket transmission
and makes the PPPOX_ZOMBIE state uncessary.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c
@@ -500,27 +500,9 @@ static int pppoe_disc_rcv(struct sk_buff
pn = pppoe_pernet(dev_net(dev));
po = get_item(pn, ph->sid, eth_hdr(skb)->h_source, dev->ifindex);
- if (po) {
- struct sock *sk = sk_pppox(po);
-
- bh_lock_sock(sk);
-
- /* If the user has locked the socket, just ignore
- * the packet. With the way two rcv protocols hook into
- * one socket family type, we cannot (easily) distinguish
- * what kind of SKB it is during backlog rcv.
- */
- if (sock_owned_by_user(sk) == 0) {
- /* We're no longer connect at the PPPOE layer,
- * and must wait for ppp channel to disconnect us.
- */
- sk->sk_state = PPPOX_ZOMBIE;
- }
-
- bh_unlock_sock(sk);
+ if (po)
if (!schedule_work(&po->proto.pppoe.padt_work))
- sock_put(sk);
- }
+ sock_put(sk_pppox(po));
abort:
kfree_skb(skb);