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rxrpc: Calls displayed in /proc may in future lack a connection

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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>
This commit is contained in:
David Howells 2016-06-17 11:07:55 +01:00
parent f4552c2d24
commit f4e7da8cde
1 changed files with 11 additions and 8 deletions
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19
net/rxrpc/proc.c
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@ -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,