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authorMichael Ellerman <michael@ellerman.id.au>2005-08-31 21:29:20 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-08-31 22:42:46 -0400
commit76812d81238cda5c5c4060da27517a08287620fc (patch)
tree461d70f89c14cfc4586729ad082c92cee3306f4e /drivers/net/iseries_veth.c
parentdb5e8718eac0b8166d6fd05b1ed7f8114c243988 (diff)
[PATCH] iseries_veth: Add sysfs support for connection structs
To aid in field debugging, add sysfs support for iseries_veth's connection structures. At the moment this is all read-only, however we could think about adding write support for some attributes in future. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/iseries_veth.c')
-rw-r--r--drivers/net/iseries_veth.c94
1 files changed, 90 insertions, 4 deletions
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index b945bf02d257..25481ea67474 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -182,10 +182,6 @@ static void veth_release_connection(struct kobject *kobject);
182static void veth_timed_ack(unsigned long ptr); 182static void veth_timed_ack(unsigned long ptr);
183static void veth_timed_reset(unsigned long ptr); 183static void veth_timed_reset(unsigned long ptr);
184 184
185static struct kobj_type veth_lpar_connection_ktype = {
186 .release = veth_release_connection
187};
188
189/* 185/*
190 * Utility functions 186 * Utility functions
191 */ 187 */
@@ -280,6 +276,81 @@ static int veth_allocate_events(HvLpIndex rlp, int number)
280} 276}
281 277
282/* 278/*
279 * sysfs support
280 */
281
282struct veth_cnx_attribute {
283 struct attribute attr;
284 ssize_t (*show)(struct veth_lpar_connection *, char *buf);
285 ssize_t (*store)(struct veth_lpar_connection *, const char *buf);
286};
287
288static ssize_t veth_cnx_attribute_show(struct kobject *kobj,
289 struct attribute *attr, char *buf)
290{
291 struct veth_cnx_attribute *cnx_attr;
292 struct veth_lpar_connection *cnx;
293
294 cnx_attr = container_of(attr, struct veth_cnx_attribute, attr);
295 cnx = container_of(kobj, struct veth_lpar_connection, kobject);
296
297 if (!cnx_attr->show)
298 return -EIO;
299
300 return cnx_attr->show(cnx, buf);
301}
302
303#define CUSTOM_CNX_ATTR(_name, _format, _expression) \
304static ssize_t _name##_show(struct veth_lpar_connection *cnx, char *buf)\
305{ \
306 return sprintf(buf, _format, _expression); \
307} \
308struct veth_cnx_attribute veth_cnx_attr_##_name = __ATTR_RO(_name)
309
310#define SIMPLE_CNX_ATTR(_name) \
311 CUSTOM_CNX_ATTR(_name, "%lu\n", (unsigned long)cnx->_name)
312
313SIMPLE_CNX_ATTR(outstanding_tx);
314SIMPLE_CNX_ATTR(remote_lp);
315SIMPLE_CNX_ATTR(num_events);
316SIMPLE_CNX_ATTR(src_inst);
317SIMPLE_CNX_ATTR(dst_inst);
318SIMPLE_CNX_ATTR(num_pending_acks);
319SIMPLE_CNX_ATTR(num_ack_events);
320CUSTOM_CNX_ATTR(ack_timeout, "%d\n", jiffies_to_msecs(cnx->ack_timeout));
321CUSTOM_CNX_ATTR(reset_timeout, "%d\n", jiffies_to_msecs(cnx->reset_timeout));
322CUSTOM_CNX_ATTR(state, "0x%.4lX\n", cnx->state);
323CUSTOM_CNX_ATTR(last_contact, "%d\n", cnx->last_contact ?
324 jiffies_to_msecs(jiffies - cnx->last_contact) : 0);
325
326#define GET_CNX_ATTR(_name) (&veth_cnx_attr_##_name.attr)
327
328static struct attribute *veth_cnx_default_attrs[] = {
329 GET_CNX_ATTR(outstanding_tx),
330 GET_CNX_ATTR(remote_lp),
331 GET_CNX_ATTR(num_events),
332 GET_CNX_ATTR(reset_timeout),
333 GET_CNX_ATTR(last_contact),
334 GET_CNX_ATTR(state),
335 GET_CNX_ATTR(src_inst),
336 GET_CNX_ATTR(dst_inst),
337 GET_CNX_ATTR(num_pending_acks),
338 GET_CNX_ATTR(num_ack_events),
339 GET_CNX_ATTR(ack_timeout),
340 NULL
341};
342
343static struct sysfs_ops veth_cnx_sysfs_ops = {
344 .show = veth_cnx_attribute_show
345};
346
347static struct kobj_type veth_lpar_connection_ktype = {
348 .release = veth_release_connection,
349 .sysfs_ops = &veth_cnx_sysfs_ops,
350 .default_attrs = veth_cnx_default_attrs
351};
352
353/*
283 * LPAR connection code 354 * LPAR connection code
284 */ 355 */
285 356
@@ -1493,6 +1564,8 @@ void __exit veth_module_cleanup(void)
1493 if (!cnx) 1564 if (!cnx)
1494 continue; 1565 continue;
1495 1566
1567 /* Remove the connection from sysfs */
1568 kobject_del(&cnx->kobject);
1496 /* Drop the driver's reference to the connection */ 1569 /* Drop the driver's reference to the connection */
1497 kobject_put(&cnx->kobject); 1570 kobject_put(&cnx->kobject);
1498 } 1571 }
@@ -1523,6 +1596,19 @@ int __init veth_module_init(void)
1523 if (rc != 0) 1596 if (rc != 0)
1524 goto error; 1597 goto error;
1525 1598
1599 for (i = 0; i < HVMAXARCHITECTEDLPS; ++i) {
1600 struct kobject *kobj;
1601
1602 if (!veth_cnx[i])
1603 continue;
1604
1605 kobj = &veth_cnx[i]->kobject;
1606 kobj->parent = &veth_driver.driver.kobj;
1607 /* If the add failes, complain but otherwise continue */
1608 if (0 != kobject_add(kobj))
1609 veth_error("cnx %d: Failed adding to sysfs.\n", i);
1610 }
1611
1526 return 0; 1612 return 0;
1527 1613
1528error: 1614error: