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[IPROUTE]: Add support for routing rule fwmark masks 

Needs kernel >= 2.6.19.

Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Patrick McHardy 2006-12-13 16:58:32 -08:00 committed by Stephen Hemminger
parent 5a8ba22862
commit be7f286e83
3 changed files with 23 additions and 5 deletions
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1
include/linux/rtnetlink.h
View File

@ -263,6 +263,7 @@ enum rtattr_type_t
RTA_SESSION,
RTA_MP_ALGO,
RTA_TABLE,
RTA_FWMASK,
__RTA_MAX
};

25
ip/iprule.c
View File

@ -37,7 +37,7 @@ static void usage(void) __attribute__((noreturn));
static void usage(void)
{
fprintf(stderr, "Usage: ip rule [ list | add | del | flush ] SELECTOR ACTION\n");
fprintf(stderr, "SELECTOR := [ not ] [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK ]\n");
fprintf(stderr, "SELECTOR := [ not ] [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK[/MASK] ]\n");
fprintf(stderr, " [ dev STRING ] [ pref NUMBER ]\n");
fprintf(stderr, "ACTION := [ table TABLE_ID ]\n");
fprintf(stderr, " [ prohibit | reject | unreachable ]\n");
@ -129,8 +129,17 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
SPRINT_BUF(b1);
fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
}
if (tb[RTA_PROTOINFO]) {
fprintf(fp, "fwmark %#x ", *(__u32*)RTA_DATA(tb[RTA_PROTOINFO]));
if (tb[RTA_PROTOINFO] || tb[RTA_FWMASK]) {
__u32 mark = 0, mask = 0;
if (tb[RTA_PROTOINFO])
mark = *(__u32*)RTA_DATA(tb[RTA_PROTOINFO]);
if (tb[RTA_FWMASK] &&
(mask = *(__u32*)RTA_DATA(tb[RTA_FWMASK])) != 0xFFFFFFFF)
fprintf(fp, "fwmark 0x%x/0x%x ", mark, mask);
else
fprintf(fp, "fwmark 0x%x ", mark);
}
if (tb[RTA_IIF]) {
@ -252,11 +261,19 @@ static int iprule_modify(int cmd, int argc, char **argv)
invarg("TOS value is invalid\n", *argv);
req.r.rtm_tos = tos;
} else if (strcmp(*argv, "fwmark") == 0) {
__u32 fwmark;
char *slash;
__u32 fwmark, fwmask;
NEXT_ARG();
if ((slash = strchr(*argv, '/')) != NULL)
*slash = '\0';
if (get_u32(&fwmark, *argv, 0))
invarg("fwmark value is invalid\n", *argv);
addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
if (slash) {
if (get_u32(&fwmask, slash+1, 0))
invarg("fwmask value is invalid\n", slash+1);
addattr32(&req.n, sizeof(req), RTA_FWMASK, fwmask);
}
} else if (matches(*argv, "realms") == 0) {
__u32 realm;
NEXT_ARG();

2
man/man8/ip.8
View File

@ -223,7 +223,7 @@ throw " | " unreachable " | " prohibit " | " blackhole " | " nat " ]"
.B tos
.IR TOS " ] [ "
.B fwmark
.IR FWMARK " ] [ "
.IR FWMARK[/MASK] " ] [ "
.B dev
.IR STRING " ] [ "
.B pref