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authorRui Salvaterra <rsalvaterra@gmail.com>2020-07-31 10:10:36 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2020-10-03 22:08:39 +0200
commiteecd6f7a6c44af48f1c70d383ac87e3200dc1233 (patch)
treeb6a3a5993cd302c045bf4c24ae2b869852b9a2a0 /networking/libiproute/iprule.c
parent16e82c61d4db91e2e888600cdee7cf656ba4774c (diff)
downloadbusybox-eecd6f7a6c44af48f1c70d383ac87e3200dc1233.tar.gz
ip rule: add support for fwmark/fwmask for policy routing
This adds support for fwmark/fwmask in ip rule which is needed, for example, in OpenWrt's mwan3. Masks are supported since Linux 2.6.19. Fixes: https://bugs.busybox.net/show_bug.cgi?id=11621 Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/libiproute/iprule.c')
-rw-r--r--networking/libiproute/iprule.c32
1 files changed, 26 insertions, 6 deletions
diff --git a/networking/libiproute/iprule.c b/networking/libiproute/iprule.c
index 0ce0dfeef..50acfe4e7 100644
--- a/networking/libiproute/iprule.c
+++ b/networking/libiproute/iprule.c
@@ -17,8 +17,10 @@
#include <arpa/inet.h>
/* from <linux/fib_rules.h>: */
-#define FRA_SUPPRESS_IFGROUP 13
-#define FRA_SUPPRESS_PREFIXLEN 14
+#define FRA_FWMARK 10
+#define FRA_SUPPRESS_IFGROUP 13
+#define FRA_SUPPRESS_PREFIXLEN 14
+#define FRA_FWMASK 16
#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
@@ -117,8 +119,18 @@ static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
if (r->rtm_tos) {
printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos));
}
- if (tb[RTA_PROTOINFO]) {
- printf("fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
+
+ if (tb[FRA_FWMARK] || tb[FRA_FWMASK]) {
+ uint32_t mark = 0, mask = 0;
+
+ if (tb[FRA_FWMARK])
+ mark = *(uint32_t*)RTA_DATA(tb[FRA_FWMARK]);
+ if (tb[FRA_FWMASK]
+ && (mask = *(uint32_t*)RTA_DATA(tb[FRA_FWMASK])) != 0xFFFFFFFF
+ )
+ printf("fwmark %#x/%#x ", mark, mask);
+ else
+ printf("fwmark %#x ", mark);
}
if (tb[RTA_IIF]) {
@@ -257,10 +269,18 @@ static int iprule_modify(int cmd, char **argv)
invarg_1_to_2(*argv, "TOS");
req.r.rtm_tos = tos;
} else if (key == ARG_fwmark) {
- uint32_t fwmark;
+ char *slash;
+ uint32_t fwmark, fwmask;
NEXT_ARG();
+ slash = strchr(*argv, '/');
+ if (slash)
+ *slash = '\0';
fwmark = get_u32(*argv, keyword_fwmark);
- addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
+ addattr32(&req.n, sizeof(req), FRA_FWMARK, fwmark);
+ if (slash) {
+ fwmask = get_u32(slash + 1, "fwmask");
+ addattr32(&req.n, sizeof(req), FRA_FWMASK, fwmask);
+ }
} else if (key == ARG_realms) {
uint32_t realm;
NEXT_ARG();