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| author | Craig Gallek <kraig@google.com> | 2016-02-10 11:50:40 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-11 03:54:15 -0500 |
| commit | c125e80b88687b25b321795457309eaaee4bf270 (patch) | |
| tree | d61eb6c67a62046691c8f354c0fad948ef298f99 /net/ipv6/inet6_connection_sock.c | |
| parent | fa463497679352c04d201631534955e6be66eef8 (diff) | |
| download | lwn-c125e80b88687b25b321795457309eaaee4bf270.tar.gz lwn-c125e80b88687b25b321795457309eaaee4bf270.zip | |
soreuseport: fast reuseport TCP socket selection
This change extends the fast SO_REUSEPORT socket lookup implemented
for UDP to TCP. Listener sockets with SO_REUSEPORT and the same
receive address are additionally added to an array for faster
random access. This means that only a single socket from the group
must be found in the listener list before any socket in the group can
be used to receive a packet. Previously, every socket in the group
needed to be considered before handing off the incoming packet.
This feature also exposes the ability to use a BPF program when
selecting a socket from a reuseport group.
Signed-off-by: Craig Gallek <kraig@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/inet6_connection_sock.c')
| -rw-r--r-- | net/ipv6/inet6_connection_sock.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index 36c3f0155010..532c3ef282c5 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -26,6 +26,7 @@ #include <net/ip6_route.h> #include <net/sock.h> #include <net/inet6_connection_sock.h> +#include <net/sock_reuseport.h> int inet6_csk_bind_conflict(const struct sock *sk, const struct inet_bind_bucket *tb, bool relax) @@ -48,6 +49,7 @@ int inet6_csk_bind_conflict(const struct sock *sk, if ((!reuse || !sk2->sk_reuse || sk2->sk_state == TCP_LISTEN) && (!reuseport || !sk2->sk_reuseport || + rcu_access_pointer(sk->sk_reuseport_cb) || (sk2->sk_state != TCP_TIME_WAIT && !uid_eq(uid, sock_i_uid((struct sock *)sk2))))) { |