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net: fib_rules: support for match on ip_proto, sport and dport

Browse source 
uapi for ip_proto, sport and dport range match
in fib rules.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu 2018-02-28 22:40:16 -05:00 • committed by David S. Miller
parent 2927499157
commit bfff486265
3 changed files with 133 additions and 3 deletions
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36
include/net/fib_rules.h
View file

@ -27,7 +27,7 @@ struct fib_rule {
u8 action;
u8 l3mdev;
u8 proto;
/* 1 byte hole, try to use */
u8 ip_proto;
u32 target;
__be64 tun_id;
struct fib_rule __rcu *ctarget;
@ -40,6 +40,8 @@ struct fib_rule {
char iifname[IFNAMSIZ];
char oifname[IFNAMSIZ];
struct fib_kuid_range uid_range;
struct fib_rule_port_range sport_range;
struct fib_rule_port_range dport_range;
struct rcu_head rcu;
};
@ -144,6 +146,38 @@ static inline u32 frh_get_table(struct fib_rule_hdr *frh, struct nlattr **nla)
return frh->table;
}
static inline bool fib_rule_port_range_set(const struct fib_rule_port_range *range)
{
return range->start != 0 && range->end != 0;
}
static inline bool fib_rule_port_inrange(const struct fib_rule_port_range *a,
__be16 port)
{
return ntohs(port) >= a->start &&
ntohs(port) <= a->end;
}
static inline bool fib_rule_port_range_valid(const struct fib_rule_port_range *a)
{
return a->start != 0 && a->end != 0 && a->end < 0xffff &&
a->start <= a->end;
}
static inline bool fib_rule_port_range_compare(struct fib_rule_port_range *a,
struct fib_rule_port_range *b)
{
return a->start == b->start &&
a->end == b->end;
}
static inline bool fib_rule_requires_fldissect(struct fib_rule *rule)
{
return rule->ip_proto ||
fib_rule_port_range_set(&rule->sport_range) ||
fib_rule_port_range_set(&rule->dport_range);
}
struct fib_rules_ops *fib_rules_register(const struct fib_rules_ops *,
struct net *);
void fib_rules_unregister(struct fib_rules_ops *);