diff options
| -rw-r--r-- | net/decnet/dn_rules.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c index 50e819edf8c7..63ad63dfd252 100644 --- a/net/decnet/dn_rules.c +++ b/net/decnet/dn_rules.c @@ -47,6 +47,7 @@ struct dn_fib_rule u8 flags; #ifdef CONFIG_DECNET_ROUTE_FWMARK u32 fwmark; + u32 fwmask; #endif }; @@ -116,6 +117,7 @@ static struct nla_policy dn_fib_rule_policy[FRA_MAX+1] __read_mostly = { [FRA_SRC] = { .type = NLA_U16 }, [FRA_DST] = { .type = NLA_U16 }, [FRA_FWMARK] = { .type = NLA_U32 }, + [FRA_FWMASK] = { .type = NLA_U32 }, [FRA_TABLE] = { .type = NLA_U32 }, }; @@ -130,7 +132,7 @@ static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) return 0; #ifdef CONFIG_DECNET_ROUTE_FWMARK - if (r->fwmark && (r->fwmark != fl->fld_fwmark)) + if ((r->fwmark ^ fl->fld_fwmark) & r->fwmask) return 0; #endif @@ -168,8 +170,17 @@ static int dn_fib_rule_configure(struct fib_rule *rule, struct sk_buff *skb, r->dst = nla_get_u16(tb[FRA_DST]); #ifdef CONFIG_DECNET_ROUTE_FWMARK - if (tb[FRA_FWMARK]) + if (tb[FRA_FWMARK]) { r->fwmark = nla_get_u32(tb[FRA_FWMARK]); + if (r->fwmark) + /* compatibility: if the mark value is non-zero all bits + * are compared unless a mask is explicitly specified. + */ + r->fwmask = 0xFFFFFFFF; + } + + if (tb[FRA_FWMASK]) + r->fwmask = nla_get_u32(tb[FRA_FWMASK]); #endif r->src_len = frh->src_len; @@ -195,6 +206,9 @@ static int dn_fib_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh, #ifdef CONFIG_DECNET_ROUTE_FWMARK if (tb[FRA_FWMARK] && (r->fwmark != nla_get_u32(tb[FRA_FWMARK]))) return 0; + + if (tb[FRA_FWMASK] && (r->fwmask != nla_get_u32(tb[FRA_FWMASK]))) + return 0; #endif if (tb[FRA_SRC] && (r->src != nla_get_u16(tb[FRA_SRC]))) @@ -237,6 +251,8 @@ static int dn_fib_rule_fill(struct fib_rule *rule, struct sk_buff *skb, #ifdef CONFIG_DECNET_ROUTE_FWMARK if (r->fwmark) NLA_PUT_U32(skb, FRA_FWMARK, r->fwmark); + if (r->fwmask || r->fwmark) + NLA_PUT_U32(skb, FRA_FWMASK, r->fwmask); #endif if (r->dst_len) NLA_PUT_U16(skb, FRA_DST, r->dst); |