[IPV6] ROUTE: Add support for fwmask in routing rules.
Add support for fwmark masks.
A mask of 0xFFFFFFFF is used when a mark value != 0 is sent without a mask.
Based on patch for net/ipv4/fib_rules.c by Patrick McHardy <[EMAIL PROTECTED]>.
Signed-off-by: YOSHIFUJI Hideaki <[EMAIL PROTECTED]>
---
net/ipv6/fib6_rules.c | 24 ++++++++++++++++++++++--
1 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 3d64c71..ee4aa43 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -28,6 +28,7 @@ struct fib6_rule
struct rt6key dst;
#ifdef CONFIG_IPV6_ROUTE_FWMARK
u32 fwmark;
+ u32 fwmask;
#endif
u8 tclass;
};
@@ -128,7 +129,7 @@ static int fib6_rule_match(struct fib_ru
return 0;
#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if (r->fwmark && (r->fwmark != fl->fl6_fwmark))
+ if ((r->fwmark ^ fl->fl6_fwmark) / r->fwmask)
return 0;
#endif
@@ -141,6 +142,7 @@ static struct nla_policy fib6_rule_polic
[FRA_SRC] = { .minlen = sizeof(struct in6_addr) },
[FRA_DST] = { .minlen = sizeof(struct in6_addr) },
[FRA_FWMARK] = { .type = NLA_U32 },
+ [FRA_FWMASK] = { .type = NLA_U32 },
[FRA_TABLE] = { .type = NLA_U32 },
};
@@ -174,8 +176,20 @@ static int fib6_rule_configure(struct fi
sizeof(struct in6_addr));
#ifdef CONFIG_IPV6_ROUTE_FWMARK
- if (tb[FRA_FWMARK])
+ if (tb[FRA_FWMARK]) {
rule6->fwmark = nla_get_u32(tb[FRA_FWMARK]);
+ if (rule6->fwmark) {
+ /*
+ * if the mark value is non-zero,
+ * all bits are compared by default
+ * unless a mask is explicitly specified.
+ */
+ rule6->fwmask = 0xFFFFFFFF;
+ }
+ }
+
+ if (tb[FRA_FWMASK])
+ rule6->fwmask = nla_get_u32(tb[FRA_FWMASK]);
#endif
rule6->src.plen = frh->src_len;
@@ -212,6 +226,9 @@ static int fib6_rule_compare(struct fib_
#ifdef CONFIG_IPV6_ROUTE_FWMARK
if (tb[FRA_FWMARK] && (rule6->fwmark != nla_get_u32(tb[FRA_FWMARK])))
return 0;
+
+ if (tb[FRA_FWMASK] && (rule6->fwmask != nla_get_u32(tb[FRA_FWMASK])))
+ return 0;
#endif
return 1;
@@ -238,6 +255,9 @@ static int fib6_rule_fill(struct fib_rul
#ifdef CONFIG_IPV6_ROUTE_FWMARK
if (rule6->fwmark)
NLA_PUT_U32(skb, FRA_FWMARK, rule6->fwmark);
+
+ if (rule6->fwmask)
+ NLA_PUT_U32(skb, FRA_FWMASK, rule6->fwmask);
#endif
return 0;
--
YOSHIFUJI Hideaki @ USAGI Project <[EMAIL PROTECTED]>
GPG-FP : 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
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