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authorDaniel Borkmann <dborkman@redhat.com>2014-05-01 18:34:18 +0200
committerDavid S. Miller <davem@davemloft.net>2014-05-04 19:46:31 -0400
commit5bcfedf06f7fdf9efcf65dc11198e9012f7530f4 (patch)
tree378e4f903661c6fec7c5ca864970df3e3458165a /include
parentdfee07cceff94af498a8465353554e0b63c3b152 (diff)
downloadlinux-5bcfedf06f7fdf9efcf65dc11198e9012f7530f4.tar.bz2
net: filter: simplify label names from jump-table
This patch simplifies label naming for the BPF jump-table. When we define labels via DL(), we just concatenate/textify the combination of instruction opcode which consists of the class, subclass, word size, target register and so on. Each time we leave BPF_ prefix intact, so that e.g. the preprocessor generates a label BPF_ALU_BPF_ADD_BPF_X for DL(BPF_ALU, BPF_ADD, BPF_X) whereas a label name of ALU_ADD_X is much more easy to grasp. Pure cleanup only. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/filter.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 759abf78dd61..b042d1db127f 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -37,6 +37,9 @@
#define BPF_CALL 0x80 /* function call */
#define BPF_EXIT 0x90 /* function return */
+/* Placeholder/dummy for 0 */
+#define BPF_0 0
+
/* BPF has 10 general purpose 64-bit registers and stack frame. */
#define MAX_BPF_REG 11