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RDS/IB: print IB event strings as well as their number 

It's nice to not have to go digging in the code to see which event
occurred.  It's easy to throw together a quick array that maps the ib
event enums to their strings.  I didn't see anything in the stack that
does this translation for us, but I also didn't look very hard.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
This commit is contained in:
Zach Brown 2010-07-14 14:01:21 -07:00 committed by Andy Grover
parent 8576f374ac
commit 1bde04a63d
1 changed files with 39 additions and 4 deletions
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43
net/rds/ib_cm.c
View File

@ -38,6 +38,38 @@
#include "rds.h"
#include "ib.h"
static char *rds_ib_event_type_strings[] = {
#define RDS_IB_EVENT_STRING(foo) [IB_EVENT_##foo] = __stringify(foo)
RDS_IB_EVENT_STRING(CQ_ERR),
RDS_IB_EVENT_STRING(QP_FATAL),
RDS_IB_EVENT_STRING(QP_REQ_ERR),
RDS_IB_EVENT_STRING(QP_ACCESS_ERR),
RDS_IB_EVENT_STRING(COMM_EST),
RDS_IB_EVENT_STRING(SQ_DRAINED),
RDS_IB_EVENT_STRING(PATH_MIG),
RDS_IB_EVENT_STRING(PATH_MIG_ERR),
RDS_IB_EVENT_STRING(DEVICE_FATAL),
RDS_IB_EVENT_STRING(PORT_ACTIVE),
RDS_IB_EVENT_STRING(PORT_ERR),
RDS_IB_EVENT_STRING(LID_CHANGE),
RDS_IB_EVENT_STRING(PKEY_CHANGE),
RDS_IB_EVENT_STRING(SM_CHANGE),
RDS_IB_EVENT_STRING(SRQ_ERR),
RDS_IB_EVENT_STRING(SRQ_LIMIT_REACHED),
RDS_IB_EVENT_STRING(QP_LAST_WQE_REACHED),
RDS_IB_EVENT_STRING(CLIENT_REREGISTER),
#undef RDS_IB_EVENT_STRING
};
static char *rds_ib_event_str(enum ib_event_type type)
{
if (type < ARRAY_SIZE(rds_ib_event_type_strings) &&
rds_ib_event_type_strings[type])
return rds_ib_event_type_strings[type];
else
return "unknown";
};
/*
* Set the selected protocol version
*/
@ -202,7 +234,8 @@ static void rds_ib_cm_fill_conn_param(struct rds_connection *conn,
static void rds_ib_cq_event_handler(struct ib_event *event, void *data)
{
rdsdebug("event %u data %p\n", event->event, data);
rdsdebug("event %u (%s) data %p\n",
event->event, rds_ib_event_str(event->event), data);
}
static void rds_ib_qp_event_handler(struct ib_event *event, void *data)
@ -210,16 +243,18 @@ static void rds_ib_qp_event_handler(struct ib_event *event, void *data)
struct rds_connection *conn = data;
struct rds_ib_connection *ic = conn->c_transport_data;
rdsdebug("conn %p ic %p event %u\n", conn, ic, event->event);
rdsdebug("conn %p ic %p event %u (%s)\n", conn, ic, event->event,
rds_ib_event_str(event->event));
switch (event->event) {
case IB_EVENT_COMM_EST:
rdma_notify(ic->i_cm_id, IB_EVENT_COMM_EST);
break;
default:
rdsdebug("Fatal QP Event %u "
rdsdebug("Fatal QP Event %u (%s) "
"- connection %pI4->%pI4, reconnecting\n",
event->event, &conn->c_laddr, &conn->c_faddr);
event->event, rds_ib_event_str(event->event),
&conn->c_laddr, &conn->c_faddr);
rds_conn_drop(conn);
break;
}