From: Yi Zou Date: Mon, 19 Mar 2012 11:12:41 +0000 (+0000) Subject: net: update the usage of CHECKSUM_UNNECESSARY X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3af79302b400e05b45e377993a8870869500466b;p=openwrt%2Fstaging%2Fblogic.git net: update the usage of CHECKSUM_UNNECESSARY As suggested by Ben, this adds the clarification on the usage of CHECKSUM_UNNECESSARY on the outgoing patch. Also add the usage description of NETIF_F_FCOE_CRC and CHECKSUM_UNNECESSARY for the kernel FCoE protocol driver. This is a follow-up to the following: http://patchwork.ozlabs.org/patch/147315/ Signed-off-by: Yi Zou Cc: Ben Hutchings Cc: Jeff Kirsher Cc: www.Open-FCoE.org Signed-off-by: David S. Miller --- diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8dc8257eab8b..a2b9953b582d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -94,6 +94,13 @@ * about CHECKSUM_UNNECESSARY. 8) * NETIF_F_IPV6_CSUM about as dumb as the last one but does IPv6 instead. * + * UNNECESSARY: device will do per protocol specific csum. Protocol drivers + * that do not want net to perform the checksum calculation should use + * this flag in their outgoing skbs. + * NETIF_F_FCOE_CRC this indicates the device can do FCoE FC CRC + * offload. Correspondingly, the FCoE protocol driver + * stack should use CHECKSUM_UNNECESSARY. + * * Any questions? No questions, good. --ANK */