From b1d95ae5c5bd3deba84d00c4f83d7d0836b5936f Mon Sep 17 00:00:00 2001
From: Ray Bellis <ray@isc.org>
Date: Mon, 22 Feb 2016 11:02:40 +0100
Subject: tools, bpf_asm: simplify parser rule for BPF extensions

We can already use yylval in the lexer for encoding the BPF extension
number, so that the parser rules can be further reduced to a single one
for each B/H/W case.

Signed-off-by: Ray Bellis <ray@isc.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/net/bpf_exp.l | 84 +++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 68 insertions(+), 16 deletions(-)

(limited to 'tools/net/bpf_exp.l')

diff --git a/tools/net/bpf_exp.l b/tools/net/bpf_exp.l
index 7cc72a336645..bd83149e7be0 100644
--- a/tools/net/bpf_exp.l
+++ b/tools/net/bpf_exp.l
@@ -23,6 +23,9 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
+
+#include <linux/filter.h>
 
 #include "bpf_exp.yacc.h"
 
@@ -79,22 +82,71 @@ extern void yyerror(const char *str);
 "txa"		{ return OP_TXA; }
 
 "#"?("len")	{ return K_PKT_LEN; }
-"#"?("proto")	{ return K_PROTO; }
-"#"?("type")	{ return K_TYPE; }
-"#"?("poff")	{ return K_POFF; }
-"#"?("ifidx")	{ return K_IFIDX; }
-"#"?("nla")	{ return K_NLATTR; }
-"#"?("nlan")	{ return K_NLATTR_NEST; }
-"#"?("mark")	{ return K_MARK; }
-"#"?("queue")	{ return K_QUEUE; }
-"#"?("hatype")	{ return K_HATYPE; }
-"#"?("rxhash")	{ return K_RXHASH; }
-"#"?("cpu")	{ return K_CPU; }
-"#"?("vlan_tci")	{ return K_VLAN_TCI; }
-"#"?("vlan_pr")		{ return K_VLAN_AVAIL; }
-"#"?("vlan_avail")	{ return K_VLAN_AVAIL; }
-"#"?("vlan_tpid")	{ return K_VLAN_TPID; }
-"#"?("rand")	{ return K_RAND; }
+
+"#"?("proto")	{
+		yylval.number = SKF_AD_PROTOCOL;
+		return extension;
+	}
+"#"?("type")	{
+		yylval.number = SKF_AD_PKTTYPE;
+		return extension;
+	}
+"#"?("poff")	{
+		yylval.number = SKF_AD_PAY_OFFSET;
+		return extension;
+	}
+"#"?("ifidx")	{
+		yylval.number = SKF_AD_IFINDEX;
+		return extension;
+	}
+"#"?("nla")	{
+		yylval.number = SKF_AD_NLATTR;
+		return extension;
+	}
+"#"?("nlan")	{
+		yylval.number = SKF_AD_NLATTR_NEST;
+		return extension;
+	}
+"#"?("mark")	{
+		yylval.number = SKF_AD_MARK;
+		return extension;
+	}
+"#"?("queue")	{
+		yylval.number = SKF_AD_QUEUE;
+		return extension;
+	}
+"#"?("hatype")	{
+		yylval.number = SKF_AD_HATYPE;
+		return extension;
+	}
+"#"?("rxhash")	{
+		yylval.number = SKF_AD_RXHASH;
+		return extension;
+	}
+"#"?("cpu")	{
+		yylval.number = SKF_AD_CPU;
+		return extension;
+	}
+"#"?("vlan_tci") {
+		yylval.number = SKF_AD_VLAN_TAG;
+		return extension;
+	}
+"#"?("vlan_pr")	{
+		yylval.number = SKF_AD_VLAN_TAG_PRESENT;
+		return extension;
+	}
+"#"?("vlan_avail") {
+		yylval.number = SKF_AD_VLAN_TAG_PRESENT;
+		return extension;
+	}
+"#"?("vlan_tpid") {
+		yylval.number = SKF_AD_VLAN_TPID;
+		return extension;
+	}
+"#"?("rand")	{
+		yylval.number = SKF_AD_RANDOM;
+		return extension;
+	}
 
 ":"		{ return ':'; }
 ","		{ return ','; }
-- 
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