diff options
Diffstat (limited to 'net/ipv6/protocol.c')
| -rw-r--r-- | net/ipv6/protocol.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/net/ipv6/protocol.c b/net/ipv6/protocol.c index 053082dfc93..e048cf1bb6a 100644 --- a/net/ipv6/protocol.c +++ b/net/ipv6/protocol.c @@ -25,7 +25,9 @@ #include <linux/spinlock.h> #include <net/protocol.h> +#if IS_ENABLED(CONFIG_IPV6) const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly; +EXPORT_SYMBOL(inet6_protos); int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol) { @@ -34,10 +36,6 @@ int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol } EXPORT_SYMBOL(inet6_add_protocol); -/* - * Remove a protocol from the hash tables. - */ - int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol) { int ret; @@ -50,3 +48,26 @@ int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol return ret; } EXPORT_SYMBOL(inet6_del_protocol); +#endif + +const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly; + +int inet6_add_offload(const struct net_offload *prot, unsigned char protocol) +{ + return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol], + NULL, prot) ? 0 : -1; +} +EXPORT_SYMBOL(inet6_add_offload); + +int inet6_del_offload(const struct net_offload *prot, unsigned char protocol) +{ + int ret; + + ret = (cmpxchg((const struct net_offload **)&inet6_offloads[protocol], + prot, NULL) == prot) ? 0 : -1; + + synchronize_net(); + + return ret; +} +EXPORT_SYMBOL(inet6_del_offload); |