From: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Date: Tue, 21 Jul 2009 01:57:59 +0000 (+0000)
Subject: Phonet: account for dropped RX packets
X-Git-Tag: firefly_0821_release~12983^2~577
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2e2fb4b33d62c742019774c5e6e47711a3d60505;p=firefly-linux-kernel-4.4.55.git

Phonet: account for dropped RX packets

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index eef833ea6d7b..b8252d289cd7 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -346,8 +346,10 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb)
 		break;
 
 	case PNS_PEP_CTRL_REQ:
-		if (skb_queue_len(&pn->ctrlreq_queue) >= PNPIPE_CTRLREQ_MAX)
+		if (skb_queue_len(&pn->ctrlreq_queue) >= PNPIPE_CTRLREQ_MAX) {
+			atomic_inc(&sk->sk_drops);
 			break;
+		}
 		__skb_pull(skb, 4);
 		queue = &pn->ctrlreq_queue;
 		goto queue;
@@ -358,10 +360,13 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb)
 			err = sock_queue_rcv_skb(sk, skb);
 			if (!err)
 				return 0;
+			if (err == -ENOMEM)
+				atomic_inc(&sk->sk_drops);
 			break;
 		}
 
 		if (pn->rx_credits == 0) {
+			atomic_inc(&sk->sk_drops);
 			err = -ENOBUFS;
 			break;
 		}