netdev - [PATCH net-next] net: remove useless check in napi_gro

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Message-ID: <1447962170.22599.240.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Thu, 19 Nov 2015 11:42:50 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [PATCH net-next] net: remove useless check in napi_gro_frags()

From: Eric Dumazet <edumazet@...gle.com>

Checking if skb is NULL in napi_gro_frags() is too late.

If skb was NULL, we would crash earlier in napi_frags_skb()

Drivers normally catch napi_get_frags() NULL return value
before calling napi_gro_frags()

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/core/dev.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 41cef3e3f558b857a9093a83f6b0c73f32b8b45f..8d8d34ff68f5800dbcb2958b6a937b9db478e359 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4465,9 +4465,6 @@ gro_result_t napi_gro_frags(struct napi_struct *napi)
 {
 	struct sk_buff *skb = napi_frags_skb(napi);
 
-	if (!skb)
-		return GRO_DROP;
-
 	trace_napi_gro_frags_entry(skb);
 
 	return napi_frags_finish(napi, skb, dev_gro_receive(napi, skb));


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