From: Steven Barth <steven@midlink.org>
Date: Thu, 19 Mar 2015 17:13:33 +0000 (+0100)
Subject: add prelocal table to manipulate locally destinated traffic
X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=commitdiff_plain;h=3eea8576d48d9b20cc1c6b46f54c7345a39d13aa

add prelocal table to manipulate locally destinated traffic

Signed-off-by: Steven Barth <steven@midlink.org>
---

diff --git a/system-linux.c b/system-linux.c
index fb2ee29..21385fc 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -43,6 +43,10 @@
 #define RTN_FAILED_POLICY 12
 #endif
 
+#ifndef RT_TABLE_PRELOCAL
+#define RT_TABLE_PRELOCAL 128
+#endif
+
 #include <string.h>
 #include <fcntl.h>
 #include <glob.h>
@@ -1606,6 +1610,8 @@ bool system_resolve_rt_table(const char *name, unsigned int *id)
 		table = RT_TABLE_MAIN;
 	else if (!strcmp(name, "local"))
 		table = RT_TABLE_LOCAL;
+	else if (!strcmp(name, "prelocal"))
+		table = RT_TABLE_PRELOCAL;
 
 	/* try to look up name in /etc/iproute2/rt_tables */
 	else if ((f = fopen("/etc/iproute2/rt_tables", "r")) != NULL)
@@ -1767,6 +1773,10 @@ int system_flush_iprules(void)
 	rule.flags = IPRULE_INET4 | IPRULE_PRIORITY | IPRULE_LOOKUP;
 
 	rule.priority = 0;
+	rule.lookup = RT_TABLE_PRELOCAL;
+	rv |= system_iprule(&rule, RTM_NEWRULE);
+
+	rule.priority = 1;
 	rule.lookup = RT_TABLE_LOCAL;
 	rv |= system_iprule(&rule, RTM_NEWRULE);
 
@@ -1782,6 +1792,10 @@ int system_flush_iprules(void)
 	rule.flags = IPRULE_INET6 | IPRULE_PRIORITY | IPRULE_LOOKUP;
 
 	rule.priority = 0;
+	rule.lookup = RT_TABLE_PRELOCAL;
+	rv |= system_iprule(&rule, RTM_NEWRULE);
+
+	rule.priority = 1;
 	rule.lookup = RT_TABLE_LOCAL;
 	rv |= system_iprule(&rule, RTM_NEWRULE);