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Commit baa32ff4 authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

net: Use more bit fields in napi_gro_cb 



This patch moves the free and same_flow fields to be bit fields
(2 and 1 bit sized respectively). This frees up some space for u16's.

Signed-off-by: default avatarTom Herbert <therbert@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6db93ea1

include/linux/netdevice.h

+10 −8
Original line number Diff line number Diff line
@@ -1923,20 +1923,15 @@ struct napi_gro_cb { 
	/* Number of segments aggregated. */

	u16	count;



	/* This is non-zero if the packet may be of the same flow. */

	u8	same_flow;



	/* Free the skb? */

	u8	free;

#define NAPI_GRO_FREE		  1

#define NAPI_GRO_FREE_STOLEN_HEAD 2



	/* jiffies when first packet was created/queued */

	unsigned long age;



	/* Used in ipv6_gro_receive() and foo-over-udp */

	u16	proto;



	/* This is non-zero if the packet may be of the same flow. */

	u8	same_flow:1;



	/* Used in udp_gro_receive */

	u8	udp_mark:1;
@@ -1946,9 +1941,16 @@ struct napi_gro_cb { 
	/* Number of checksums via CHECKSUM_UNNECESSARY */

	u8	csum_cnt:3;



	/* Free the skb? */

	u8	free:2;

#define NAPI_GRO_FREE		  1

#define NAPI_GRO_FREE_STOLEN_HEAD 2



	/* Used in foo-over-udp, set in udp[46]_gro_receive */

	u8	is_ipv6:1;



	/* 7 bit hole */



	/* used to support CHECKSUM_COMPLETE for tunneling protocols */

	__wsum	csum;