path: root/net/ipv4/tcp_ipv4.c
diff options
authorDave Watson <davejwatson@fb.com>2017-06-14 11:37:14 -0700
committerDavid S. Miller <davem@davemloft.net>2017-06-15 12:12:40 -0400
commit734942cc4ea6478eed125af258da1bdbb4afe578 (patch)
treea6b0b27cb551055a7c5d5756c40d737543323df1 /net/ipv4/tcp_ipv4.c
parentMerge branch 'Broadcom-DTE-based-PTP-clock' (diff)
tcp: ULP infrastructure
Add the infrustructure for attaching Upper Layer Protocols (ULPs) over TCP sockets. Based on a similar infrastructure in tcp_cong. The idea is that any ULP can add its own logic by changing the TCP proto_ops structure to its own methods. Example usage: setsockopt(sock, SOL_TCP, TCP_ULP, "tls", sizeof("tls")); modules will call: tcp_register_ulp(&tcp_tls_ulp_ops); to register/unregister their ulp, with an init function and name. A list of registered ulps will be returned by tcp_get_available_ulp, which is hooked up to /proc. Example: $ cat /proc/sys/net/ipv4/tcp_available_ulp tls There is currently no functionality to remove or chain ULPs, but it should be possible to add these in the future if needed. Signed-off-by: Boris Pismenny <borisp@mellanox.com> Signed-off-by: Dave Watson <davejwatson@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1dc8c449e16a..eec2ff907279 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1860,6 +1860,8 @@ void tcp_v4_destroy_sock(struct sock *sk)
+ tcp_cleanup_ulp(sk);
/* Cleanup up the write buffer. */