From 0ea5374255a93eee517b76df066a02e301c43fe6 Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Fri, 13 May 2022 17:21:14 -0700 Subject: [PATCH] Revert "mptcp: add data lock for sk timers" This reverts commit 4293248c6704b854bf816aa1967e433402bee11c. Additional locks are not needed, all the touched sections are already under mptcp socket lock protection. Fixes: 4293248c6704 ("mptcp: add data lock for sk timers") Signed-off-by: Paolo Abeni Signed-off-by: Mat Martineau Signed-off-by: Jakub Kicinski --- net/mptcp/protocol.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 9e46cc89a8f7..921d67174e49 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1613,10 +1613,8 @@ void __mptcp_push_pending(struct sock *sk, unsigned int flags) out: /* ensure the rtx timer is running */ - mptcp_data_lock(sk); if (!mptcp_timer_pending(sk)) mptcp_reset_timer(sk); - mptcp_data_unlock(sk); if (copied) __mptcp_check_send_data_fin(sk); } @@ -2529,10 +2527,8 @@ static void __mptcp_retrans(struct sock *sk) reset_timer: mptcp_check_and_set_pending(sk); - mptcp_data_lock(sk); if (!mptcp_timer_pending(sk)) mptcp_reset_timer(sk); - mptcp_data_unlock(sk); } static void mptcp_mp_fail_no_response(struct mptcp_sock *msk) @@ -2711,10 +2707,8 @@ void mptcp_subflow_shutdown(struct sock *sk, struct sock *ssk, int how) } else { pr_debug("Sending DATA_FIN on subflow %p", ssk); tcp_send_ack(ssk); - mptcp_data_lock(sk); if (!mptcp_timer_pending(sk)) mptcp_reset_timer(sk); - mptcp_data_unlock(sk); } break; } @@ -2815,10 +2809,8 @@ static void __mptcp_destroy_sock(struct sock *sk) /* join list will be eventually flushed (with rst) at sock lock release time*/ list_splice_init(&msk->conn_list, &conn_list); - mptcp_data_lock(sk); mptcp_stop_timer(sk); sk_stop_timer(sk, &sk->sk_timer); - mptcp_data_unlock(sk); msk->pm.status = 0; /* clears msk->subflow, allowing the following loop to close @@ -2880,9 +2872,7 @@ cleanup: __mptcp_destroy_sock(sk); do_cancel_work = true; } else { - mptcp_data_lock(sk); sk_reset_timer(sk, &sk->sk_timer, jiffies + TCP_TIMEWAIT_LEN); - mptcp_data_unlock(sk); } release_sock(sk); if (do_cancel_work) @@ -2927,10 +2917,8 @@ static int mptcp_disconnect(struct sock *sk, int flags) __mptcp_close_ssk(sk, ssk, subflow, MPTCP_CF_FASTCLOSE); } - mptcp_data_lock(sk); mptcp_stop_timer(sk); sk_stop_timer(sk, &sk->sk_timer); - mptcp_data_unlock(sk); if (mptcp_sk(sk)->token) mptcp_event(MPTCP_EVENT_CLOSED, mptcp_sk(sk), NULL, GFP_KERNEL); -- 2.11.0