[PATCH 02/41] rxrpc: Fix two connection reaping bugs

[PATCH 02/41] rxrpc: Fix two connection reaping bugs

[David Howells]

Fix two connection reaping bugs:

 (1) rxrpc_connection_expiry is in units of seconds, so
     rxrpc_disconnect_call() needs to multiply it by HZ when adding it to
     jiffies.

 (2) rxrpc_client_conn_reap_timeout() should set RXRPC_CLIENT_REAP_TIMER if
     local->kill_all_client_conns is clear, not if it is set (in which case
     we don't need the timer).  Without this, old client connections don't
     get cleaned up until the local endpoint is cleaned up.

Fixes: 5040011d073d ("rxrpc: Make the local endpoint hold a ref on a connected call")
Fixes: 0d6bf319bc5a ("rxrpc: Move the client conn cache management to the I/O thread")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: netdev@vger.kernel.org
cc: linux-afs@lists.infradead.org
---
 net/rxrpc/conn_object.c  | 2 +-
 net/rxrpc/local_object.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index ac85d4644a3c..df8a271948a1 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -212,7 +212,7 @@ void rxrpc_disconnect_call(struct rxrpc_call *call)
 		conn->idle_timestamp = jiffies;
 		if (atomic_dec_and_test(&conn->active))
 			rxrpc_set_service_reap_timer(conn->rxnet,
-						     jiffies + rxrpc_connection_expiry);
+						     jiffies + rxrpc_connection_expiry * HZ);
 	}
 
 	rxrpc_put_call(call, rxrpc_call_put_io_thread);
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 7d910aee4f8c..c553a30e9c83 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -87,7 +87,7 @@ static void rxrpc_client_conn_reap_timeout(struct timer_list *timer)
 	struct rxrpc_local *local =
 		container_of(timer, struct rxrpc_local, client_conn_reap_timer);
 
-	if (local->kill_all_client_conns &&
+	if (!local->kill_all_client_conns &&
 	    test_and_set_bit(RXRPC_CLIENT_CONN_REAP_TIMER, &local->client_conn_flags))
 		rxrpc_wake_up_io_thread(local);
 }

Re: [PATCH 02/41] rxrpc: Fix two connection reaping bugs

[Jeffrey E Altman]

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On 11/9/2023 10:39 AM, David Howells wrote:
> Fix two connection reaping bugs:
>
>   (1) rxrpc_connection_expiry is in units of seconds, so
>       rxrpc_disconnect_call() needs to multiply it by HZ when adding it to
>       jiffies.
>
>   (2) rxrpc_client_conn_reap_timeout() should set RXRPC_CLIENT_REAP_TIMER if
>       local->kill_all_client_conns is clear, not if it is set (in which case
>       we don't need the timer).  Without this, old client connections don't
>       get cleaned up until the local endpoint is cleaned up.
>
> Fixes: 5040011d073d ("rxrpc: Make the local endpoint hold a ref on a connected call")
> Fixes: 0d6bf319bc5a ("rxrpc: Move the client conn cache management to the I/O thread")
> Signed-off-by: David Howells <dhowells@redhat.com>
> cc: Marc Dionne <marc.dionne@auristor.com>
> cc: "David S. Miller" <davem@davemloft.net>
> cc: Eric Dumazet <edumazet@google.com>
> cc: Jakub Kicinski <kuba@kernel.org>
> cc: Paolo Abeni <pabeni@redhat.com>
> cc: netdev@vger.kernel.org
> cc: linux-afs@lists.infradead.org
> ---
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>

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Re: [PATCH 02/41] rxrpc: Fix two connection reaping bugs

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Thu,  9 Nov 2023 15:39:25 +0000 you wrote:
> Fix two connection reaping bugs:
> 
>  (1) rxrpc_connection_expiry is in units of seconds, so
>      rxrpc_disconnect_call() needs to multiply it by HZ when adding it to
>      jiffies.
> 
>  (2) rxrpc_client_conn_reap_timeout() should set RXRPC_CLIENT_REAP_TIMER if
>      local->kill_all_client_conns is clear, not if it is set (in which case
>      we don't need the timer).  Without this, old client connections don't
>      get cleaned up until the local endpoint is cleaned up.
> 
> [...]

Here is the summary with links:
  - [02/41] rxrpc: Fix two connection reaping bugs
    https://git.kernel.org/bpf/bpf/c/61e4a8660002

You are awesome, thank you!
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