[patch net-next 05/17] ipv6: fib_rules: Check if rule is a default rule
flat view
STALE3377d
From: Jiri Pirko <jiri@resnulli.us>
Date: 2017-07-19 07:02:42
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
From: Ido Schimmel <redacted>
As explained in commit 3c71006d15fd ("ipv4: fib_rules: Check if rule is
a default rule"), drivers supporting IPv6 FIB offload need to be able to
sanitize the rules they don't support and potentially flush their
tables.
Add an IPv6 helper to check if a FIB rule is a default rule.
Signed-off-by: Ido Schimmel <redacted>
Signed-off-by: Jiri Pirko <redacted>
---
include/net/ip6_fib.h | 5 +++++
net/ipv6/fib6_rules.c | 20 ++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 1a88008..6000b0d 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h@@ -295,6 +295,7 @@ int ipv6_route_open(struct inode *inode, struct file *file); #ifdef CONFIG_IPV6_MULTIPLE_TABLES int fib6_rules_init(void); void fib6_rules_cleanup(void); +bool fib6_rule_default(const struct fib_rule *rule); #else static inline int fib6_rules_init(void) {
@@ -304,5 +305,9 @@ static inline void fib6_rules_cleanup(void) { return ; } +static inline bool fib6_rule_default(const struct fib_rule *rule) +{ + return true; +} #endif #endif
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index ec849d8..ef1fcee 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c@@ -29,6 +29,26 @@ struct fib6_rule { u8 tclass; }; +static bool fib6_rule_matchall(const struct fib_rule *rule) +{ + struct fib6_rule *r = container_of(rule, struct fib6_rule, common); + + if (r->dst.plen || r->src.plen || r->tclass) + return false; + return fib_rule_matchall(rule); +} + +bool fib6_rule_default(const struct fib_rule *rule) +{ + if (!fib6_rule_matchall(rule) || rule->action != FR_ACT_TO_TBL || + rule->l3mdev) + return false; + if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN) + return false; + return true; +} +EXPORT_SYMBOL_GPL(fib6_rule_default); + struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6, int flags, pol_lookup_t lookup) {
--
2.9.3