diff options
Diffstat (limited to '')
| -rw-r--r-- | include/net/ipv6.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 8eca5fb30376..8dfc65639aa4 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -13,6 +13,7 @@ #include <linux/hardirq.h> #include <linux/jhash.h> #include <linux/refcount.h> +#include <linux/jump_label_ratelimit.h> #include <net/if_inet6.h> #include <net/ndisc.h> #include <net/flow.h> @@ -389,7 +390,18 @@ static inline void txopt_put(struct ipv6_txoptions *opt) kfree_rcu(opt, rcu); } -struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); +struct ip6_flowlabel *__fl6_sock_lookup(struct sock *sk, __be32 label); + +extern struct static_key_false_deferred ipv6_flowlabel_exclusive; +static inline struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, + __be32 label) +{ + if (static_branch_unlikely(&ipv6_flowlabel_exclusive.key)) + return __fl6_sock_lookup(sk, label) ? : ERR_PTR(-ENOENT); + + return NULL; +} + struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space, struct ip6_flowlabel *fl, struct ipv6_txoptions *fopt); |