diff options
| author |   Matan Barak <matanb@mellanox.com> | 2015-06-11 16:35:24 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2015-06-12 14:49:10 -0400 |
| commit | 24306dc66149020c59a07b64e2a325af59ee7d10 (patch) | |
| tree | 64674f4a705bddddf4902f10381eaf5817caa825 /drivers/infiniband/core | |
| parent | IB/core: Extend ib_uverbs_create_cq (diff) | |
| download | linux-dev-24306dc66149020c59a07b64e2a325af59ee7d10.tar.xz linux-dev-24306dc66149020c59a07b64e2a325af59ee7d10.zip | |
IB/core: Add timestamp_mask and hca_core_clock to query_device
In order to expose timestamp we need to expose two new attributes in
query_device to be used for CQ completion time-stamping:
timestamp_mask - how many bits are valid in the timestamp, where timestamp
values could be 64bits the most.
hca_core_clock - timestamp is given in HW cycles, the frequency in KHZ units
of the HCA, necessary in order to convert cycles to seconds.
This is added both to ib_query_device and its respective uverbs counterpart.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/device.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 8d07c12ab718..568cb41be904 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -539,6 +539,8 @@ EXPORT_SYMBOL(ib_dispatch_event); int ib_query_device(struct ib_device *device, struct ib_device_attr *device_attr) { + memset(device_attr, 0, sizeof(*device_attr)); + return device->query_device(device, device_attr); } EXPORT_SYMBOL(ib_query_device); diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 51311b1c0b00..11ee298bb26b 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -3426,6 +3426,8 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, if (ucore->outlen < resp.response_length) return -ENOSPC; + memset(&attr, 0, sizeof(attr)); + err = device->query_device(device, &attr); if (err) return err; @@ -3450,6 +3452,18 @@ int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, #endif resp.response_length += sizeof(resp.odp_caps); + if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) + goto end; + + resp.timestamp_mask = attr.timestamp_mask; + resp.response_length += sizeof(resp.timestamp_mask); + + if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) + goto end; + + resp.hca_core_clock = attr.hca_core_clock; + resp.response_length += sizeof(resp.hca_core_clock); + end: err = ib_copy_to_udata(ucore, &resp, resp.response_length); if (err) |