netdev - [PATCH 2/4] VSOCK: Return VMCI_ERROR_NO

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Message-Id: <1371720033-19714-3-git-send-email-asias@redhat.com>
Date:	Thu, 20 Jun 2013 17:20:31 +0800
From:	Asias He <asias@...hat.com>
To:	netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Andy King <acking@...are.com>,
	Dmitry Torokhov <dtor@...are.com>,
	Reilly Grant <grantr@...are.com>, Asias He <asias@...hat.com>
Subject: [PATCH 2/4] VSOCK: Return VMCI_ERROR_NO_MEM when fails to allocate skb

vmci_transport_recv_dgram_cb always return VMCI_SUCESS even if we fail
to allocate skb, return VMCI_ERROR_NO_MEM instead.

Signed-off-by: Asias He <asias@...hat.com>
---
 net/vmw_vsock/vmci_transport.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index daff752..99b511d 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -625,13 +625,14 @@ static int vmci_transport_recv_dgram_cb(void *data, struct vmci_datagram *dg)
 
 	/* Attach the packet to the socket's receive queue as an sk_buff. */
 	skb = alloc_skb(size, GFP_ATOMIC);
-	if (skb) {
-		/* sk_receive_skb() will do a sock_put(), so hold here. */
-		sock_hold(sk);
-		skb_put(skb, size);
-		memcpy(skb->data, dg, size);
-		sk_receive_skb(sk, skb, 0);
-	}
+	if (!skb)
+		return VMCI_ERROR_NO_MEM;
+
+	/* sk_receive_skb() will do a sock_put(), so hold here. */
+	sock_hold(sk);
+	skb_put(skb, size);
+	memcpy(skb->data, dg, size);
+	sk_receive_skb(sk, skb, 0);
 
 	return VMCI_SUCCESS;
 }
-- 
1.8.1.4

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