net: NETIF_F_HW_CSUM does not imply FCoE CRC offload (66c68bcc) · Commits · 戴 / test

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> Cc: stable@kernel.org [2.6.32+] Signed-off-by:

David S. Miller <davem@davemloft.net>

net/core/dev.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -1685,10 +1685,10 @@ 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)));

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