From 9e49e88958feb41ec701fa34b44723dabadbc28c Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 24 Sep 2012 02:23:59 +0000 Subject: filter: add XOR instruction for use with X/K SKF_AD_ALU_XOR_X has been added a while ago, but as an 'ancillary' operation that is invoked through a negative offset in K within BPF load operations. Since BPF_MOD has recently been added, BPF_XOR should also be part of the common ALU operations. Removing SKF_AD_ALU_XOR_X might not be an option since this is exposed to user space. Signed-off-by: Daniel Borkmann Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/filter.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/filter.h b/include/linux/filter.h index 3cf5fd561d86..2ded090e10f4 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -75,6 +75,7 @@ struct sock_fprog { /* Required for SO_ATTACH_FILTER. */ #define BPF_RSH 0x70 #define BPF_NEG 0x80 #define BPF_MOD 0x90 +#define BPF_XOR 0xa0 #define BPF_JA 0x00 #define BPF_JEQ 0x10 @@ -204,6 +205,8 @@ enum { BPF_S_ALU_AND_X, BPF_S_ALU_OR_K, BPF_S_ALU_OR_X, + BPF_S_ALU_XOR_K, + BPF_S_ALU_XOR_X, BPF_S_ALU_LSH_K, BPF_S_ALU_LSH_X, BPF_S_ALU_RSH_K, -- cgit v1.2.2