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authorMenglong Dong <imagedong@tencent.com>2023-01-06 19:57:23 +0100
committerDavid S. Miller <davem@davemloft.net>2023-01-09 08:30:50 +0100
commitc558246ee73e6f623ca503fb1fda626f313393a6 (patch)
tree5d4b8e7d259b220dd6af3766fd985241ad863c41 /net/mptcp
parentmptcp: rename 'sk' to 'ssk' in mptcp_token_new_connect() (diff)
downloadlinux-c558246ee73e6f623ca503fb1fda626f313393a6.tar.xz
linux-c558246ee73e6f623ca503fb1fda626f313393a6.zip
mptcp: add statistics for mptcp socket in use
Do the statistics of mptcp socket in use with sock_prot_inuse_add(). Therefore, we can get the count of used mptcp socket from /proc/net/protocols: & cat /proc/net/protocols protocol size sockets memory press maxhdr slab module cl co di ac io in de sh ss gs se re sp bi br ha uh gp em MPTCPv6 2048 0 0 no 0 yes kernel y n y y y y y y y y y y n n n y y y n MPTCP 1896 1 0 no 0 yes kernel y n y y y y y y y y y y n n n y y y n Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Menglong Dong <imagedong@tencent.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp')
-rw-r--r--net/mptcp/protocol.c12
-rw-r--r--net/mptcp/token.c6
2 files changed, 17 insertions, 1 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1ce003f15d70..13595d6dad8c 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2891,6 +2891,12 @@ static __poll_t mptcp_check_readable(struct mptcp_sock *msk)
return EPOLLIN | EPOLLRDNORM;
}
+static void mptcp_listen_inuse_dec(struct sock *sk)
+{
+ if (inet_sk_state_load(sk) == TCP_LISTEN)
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
+}
+
bool __mptcp_close(struct sock *sk, long timeout)
{
struct mptcp_subflow_context *subflow;
@@ -2900,6 +2906,7 @@ bool __mptcp_close(struct sock *sk, long timeout)
sk->sk_shutdown = SHUTDOWN_MASK;
if ((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) {
+ mptcp_listen_inuse_dec(sk);
inet_sk_state_store(sk, TCP_CLOSE);
goto cleanup;
}
@@ -3000,6 +3007,7 @@ static int mptcp_disconnect(struct sock *sk, int flags)
if (msk->fastopening)
return 0;
+ mptcp_listen_inuse_dec(sk);
inet_sk_state_store(sk, TCP_CLOSE);
mptcp_stop_timer(sk);
@@ -3657,8 +3665,10 @@ static int mptcp_listen(struct socket *sock, int backlog)
err = ssock->ops->listen(ssock, backlog);
inet_sk_state_store(sk, inet_sk_state_load(ssock->sk));
- if (!err)
+ if (!err) {
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
mptcp_copy_inaddrs(sk, ssock->sk);
+ }
mptcp_event_pm_listener(ssock->sk, MPTCP_EVENT_LISTENER_CREATED);
diff --git a/net/mptcp/token.c b/net/mptcp/token.c
index 3af502a374bc..5bb924534387 100644
--- a/net/mptcp/token.c
+++ b/net/mptcp/token.c
@@ -153,6 +153,7 @@ int mptcp_token_new_connect(struct sock *ssk)
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
struct mptcp_sock *msk = mptcp_sk(subflow->conn);
int retries = MPTCP_TOKEN_MAX_RETRIES;
+ struct sock *sk = subflow->conn;
struct token_bucket *bucket;
again:
@@ -175,6 +176,7 @@ again:
__sk_nulls_add_node_rcu((struct sock *)msk, &bucket->msk_chain);
bucket->chain_len++;
spin_unlock_bh(&bucket->lock);
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
return 0;
}
@@ -190,8 +192,10 @@ void mptcp_token_accept(struct mptcp_subflow_request_sock *req,
struct mptcp_sock *msk)
{
struct mptcp_subflow_request_sock *pos;
+ struct sock *sk = (struct sock *)msk;
struct token_bucket *bucket;
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
bucket = token_bucket(req->token);
spin_lock_bh(&bucket->lock);
@@ -370,12 +374,14 @@ void mptcp_token_destroy_request(struct request_sock *req)
*/
void mptcp_token_destroy(struct mptcp_sock *msk)
{
+ struct sock *sk = (struct sock *)msk;
struct token_bucket *bucket;
struct mptcp_sock *pos;
if (sk_unhashed((struct sock *)msk))
return;
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
bucket = token_bucket(msk->token);
spin_lock_bh(&bucket->lock);
pos = __token_lookup_msk(bucket, msk->token);