From f4e7da8cde87d0f7e9fb806918f7ec283912b694 Mon Sep 17 00:00:00 2001 From: David Howells <dhowells@redhat.com> Date: Fri, 17 Jun 2016 11:07:55 +0100 Subject: [PATCH] rxrpc: Calls displayed in /proc may in future lack a connection Allocated rxrpc calls displayed in /proc/net/rxrpc_calls may in future be on the proc list before they're connected or after they've been disconnected - in which case they may not have a pointer to a connection struct that can be used to get data from there. Deal with this by using stuff from the call struct in preference where possible and printing "no_connection" rather than a peer address if no connection is assigned. This change also has the added bonus that the service ID is now taken from the call rather the connection which will allow per-call service upgrades to be shown - something required for AuriStor server compatibility. Signed-off-by: David Howells <dhowells@redhat.com> --- net/rxrpc/proc.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c index 9863270691d7d..500cdcdc843c6 100644 --- a/net/rxrpc/proc.c +++ b/net/rxrpc/proc.c @@ -59,25 +59,28 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v) } call = list_entry(v, struct rxrpc_call, link); - conn = call->conn; sprintf(lbuff, "%pI4:%u", - &conn->params.local->srx.transport.sin.sin_addr, - ntohs(conn->params.local->srx.transport.sin.sin_port)); + &call->local->srx.transport.sin.sin_addr, + ntohs(call->local->srx.transport.sin.sin_port)); - sprintf(rbuff, "%pI4:%u", - &conn->params.peer->srx.transport.sin.sin_addr, - ntohs(conn->params.peer->srx.transport.sin.sin_port)); + conn = call->conn; + if (conn) + sprintf(rbuff, "%pI4:%u", + &conn->params.peer->srx.transport.sin.sin_addr, + ntohs(conn->params.peer->srx.transport.sin.sin_port)); + else + strcpy(rbuff, "no_connection"); seq_printf(seq, "UDP %-22.22s %-22.22s %4x %08x %08x %s %3u" " %-8.8s %08x %lx\n", lbuff, rbuff, - call->conn->params.service_id, + call->service_id, call->cid, call->call_id, - rxrpc_conn_is_service(call->conn) ? "Svc" : "Clt", + call->in_clientflag ? "Svc" : "Clt", atomic_read(&call->usage), rxrpc_call_states[call->state], call->remote_abort ?: call->local_abort, -- 2.30.2