From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 22 Oct 2010 04:38:26 +0000 (+0000)
Subject: net: NETIF_F_HW_CSUM does not imply FCoE CRC offload
X-Git-Tag: firefly_0821_release~10186^2~716
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0785ba875cf1728a62c91856d312f5d89f8d2679;p=firefly-linux-kernel-4.4.55.git

net: NETIF_F_HW_CSUM does not imply FCoE CRC offload

commit 66c68bcc489fadd4f5e8839e966e3a366e50d1d5 upstream.

NETIF_F_HW_CSUM indicates the ability to update an TCP/IP-style 16-bit
checksum with the checksum of an arbitrary part of the packet data,
whereas the FCoE CRC is something entirely different.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/net/core/dev.c b/net/core/dev.c
index 915d0aeb4616..d04cd93f22b5 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1484,10 +1484,10 @@ EXPORT_SYMBOL(netif_device_attach);
 
 static bool can_checksum_protocol(unsigned long features, __be16 protocol)
 {
-	return ((features & NETIF_F_GEN_CSUM) ||
-		((features & NETIF_F_IP_CSUM) &&
+	return ((features & NETIF_F_NO_CSUM) ||
+		((features & NETIF_F_V4_CSUM) &&
 		 protocol == htons(ETH_P_IP)) ||
-		((features & NETIF_F_IPV6_CSUM) &&
+		((features & NETIF_F_V6_CSUM) &&
 		 protocol == htons(ETH_P_IPV6)) ||
 		((features & NETIF_F_FCOE_CRC) &&
 		 protocol == htons(ETH_P_FCOE)));