diff options
| author |   Gal Pressman <galpress@amazon.com> | 2020-07-22 17:03:09 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2020-07-29 09:23:39 -0300 |
| commit | 556c811f24b30cc883733a2eaf9e939817589231 (patch) | |
| tree | 23a6239e9d1a29baca816d4b970383c6e5a1906c /drivers/infiniband/hw/efa/efa_verbs.c | |
| parent | IB/srpt: use new shared CQ mechanism (diff) | |
| download | linux-dev-556c811f24b30cc883733a2eaf9e939817589231.tar.xz linux-dev-556c811f24b30cc883733a2eaf9e939817589231.zip | |
RDMA/efa: Expose maximum TX doorbell batch
The device reports the maximum number of bytes to be written before
ringing the doorbell (zero means unlimited).
This patch queries the max batch size and reports it back to the userspace
library.
Link: https://lore.kernel.org/r/20200722140312.3651-2-galpress@amazon.com
Reviewed-by: Daniel Kranzdorf <dkkranzd@amazon.com>
Reviewed-by: Firas JahJah <firasj@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/efa/efa_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/efa/efa_verbs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index 08313f7c73bc..f49d14cebe4a 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -1525,6 +1525,7 @@ int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata) resp.sub_cqs_per_cq = dev->dev_attr.sub_cqs_per_cq; resp.inline_buf_size = dev->dev_attr.inline_buf_size; resp.max_llq_size = dev->dev_attr.max_llq_size; + resp.max_tx_batch = dev->dev_attr.max_tx_batch; if (udata && udata->outlen) { err = ib_copy_to_udata(udata, &resp, |