Re: [PATCH] VSOCK: Only check error on skb_recv_datagram when skb is NULL

[David Miller]

From: Jorgen Hansen 
Date: Mon, 18 Apr 2016 23:58:52 -0700

> If skb_recv_datagram returns an skb, we should ignore the err
> value returned. Otherwise, datagram receives will return EAGAIN
> when they have to wait for a datagram.
> 
> Acked-by: Adit Ranadive 
> Signed-off-by: Jorgen Hansen 

Applied.
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[PATCH] VSOCK: Only check error on skb_recv_datagram when skb is NULL

[Jorgen Hansen]

If skb_recv_datagram returns an skb, we should ignore the err
value returned. Otherwise, datagram receives will return EAGAIN
when they have to wait for a datagram.

Acked-by: Adit Ranadive 
Signed-off-by: Jorgen Hansen 
---
 net/vmw_vsock/vmci_transport.c |7 ++-
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index 662bdd2..5621473 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -1735,11 +1735,8 @@ static int vmci_transport_dgram_dequeue(struct 
vsock_sock *vsk,
/* Retrieve the head sk_buff from the socket's receive queue. */
err = 0;
skb = skb_recv_datagram(>sk, flags, noblock, );
-   if (err)
-   return err;
-
if (!skb)
-   return -EAGAIN;
+   return err;
 
dg = (struct vmci_datagram *)skb->data;
if (!dg)
@@ -2154,7 +2151,7 @@ module_exit(vmci_transport_exit);
 
 MODULE_AUTHOR("VMware, Inc.");
 MODULE_DESCRIPTION("VMCI transport for Virtual Sockets");
-MODULE_VERSION("1.0.3.0-k");
+MODULE_VERSION("1.0.4.0-k");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("vmware_vsock");
 MODULE_ALIAS_NETPROTO(PF_VSOCK);
-- 
1.7.0

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