diff options
| author | Kirill Tkhai <ktkhai@virtuozzo.com> | 2018-03-22 10:45:32 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-22 20:12:56 +0100 |
| commit | 5796ef75ec7b6019eac88f66751d663d537a5cd3 (patch) | |
| tree | 227c356176272dcbfb2ed06586043863bff2a3a9 /include/net | |
| parent | net: Revert "ipv4: fix a deadlock in ip_ra_control" (diff) | |
| download | linux-5796ef75ec7b6019eac88f66751d663d537a5cd3.tar.xz linux-5796ef75ec7b6019eac88f66751d663d537a5cd3.zip | |
net: Make ip_ra_chain per struct net
This is optimization, which makes ip_call_ra_chain()
iterate less sockets to find the sockets it's looking for.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/ip.h | 13 | ||||
| -rw-r--r-- | include/net/netns/ipv4.h | 1 |
2 files changed, 12 insertions, 2 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index fe63ba95d12b..d53b5a9eae34 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -91,6 +91,17 @@ static inline int inet_sdif(struct sk_buff *skb) return 0; } +/* Special input handler for packets caught by router alert option. + They are selected only by protocol field, and then processed likely + local ones; but only if someone wants them! Otherwise, router + not running rsvpd will kill RSVP. + + It is user level problem, what it will make with them. + I have no idea, how it will masquearde or NAT them (it is joke, joke :-)), + but receiver should be enough clever f.e. to forward mtrace requests, + sent to multicast group to reach destination designated router. + */ + struct ip_ra_chain { struct ip_ra_chain __rcu *next; struct sock *sk; @@ -101,8 +112,6 @@ struct ip_ra_chain { struct rcu_head rcu; }; -extern struct ip_ra_chain __rcu *ip_ra_chain; - /* IP flags. */ #define IP_CE 0x8000 /* Flag: "Congestion" */ #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 382bfd7583cf..97d7ee6667c7 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -49,6 +49,7 @@ struct netns_ipv4 { #endif struct ipv4_devconf *devconf_all; struct ipv4_devconf *devconf_dflt; + struct ip_ra_chain __rcu *ra_chain; #ifdef CONFIG_IP_MULTIPLE_TABLES struct fib_rules_ops *rules_ops; bool fib_has_custom_rules; |