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devlink: Add support for resource abstraction

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Add support for hardware resource abstraction over devlink. Each resource
is identified via id, furthermore it contains information regarding its
size and its related sub resources. Each resource can also provide its
current occupancy.

In some cases the sizes of some resources can be changed, yet for those
changes to take place a hot driver reload may be needed. The reload
capability will be introduced in the next patch.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arkadi Sharshevsky
2018-01-15 08:59:03 +01:00
committed by David S. Miller
parent 2406e7e546
commit d9f9b9a4d0
3 changed files with 488 additions and 0 deletions
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18
include/uapi/linux/devlink.h
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@@ -70,6 +70,8 @@ enum devlink_command {
DEVLINK_CMD_DPIPE_ENTRIES_GET,
DEVLINK_CMD_DPIPE_HEADERS_GET,
DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
DEVLINK_CMD_RESOURCE_SET,
DEVLINK_CMD_RESOURCE_DUMP,
/* add new commands above here */
__DEVLINK_CMD_MAX,
@@ -202,6 +204,18 @@ enum devlink_attr {
DEVLINK_ATTR_PAD,
DEVLINK_ATTR_ESWITCH_ENCAP_MODE, /* u8 */
DEVLINK_ATTR_RESOURCE_LIST, /* nested */
DEVLINK_ATTR_RESOURCE, /* nested */
DEVLINK_ATTR_RESOURCE_NAME, /* string */
DEVLINK_ATTR_RESOURCE_ID, /* u64 */
DEVLINK_ATTR_RESOURCE_SIZE, /* u64 */
DEVLINK_ATTR_RESOURCE_SIZE_NEW, /* u64 */
DEVLINK_ATTR_RESOURCE_SIZE_VALID, /* u8 */
DEVLINK_ATTR_RESOURCE_SIZE_MIN, /* u64 */
DEVLINK_ATTR_RESOURCE_SIZE_MAX, /* u64 */
DEVLINK_ATTR_RESOURCE_SIZE_GRAN, /* u64 */
DEVLINK_ATTR_RESOURCE_UNIT, /* u8 */
DEVLINK_ATTR_RESOURCE_OCC, /* u64 */
/* add new attributes above here, update the policy in devlink.c */
@@ -245,4 +259,8 @@ enum devlink_dpipe_header_id {
DEVLINK_DPIPE_HEADER_IPV6,
};
enum devlink_resource_unit {
DEVLINK_RESOURCE_UNIT_ENTRY,
};
#endif /* _UAPI_LINUX_DEVLINK_H_ */