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RDMA/bnxt_re: Enable variable size WQEs for user space applications

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Add backward compatibility code to enable variable size WQEs only if the
user lib supports it.

Link: https://patch.msgid.link/r/1724042847-1481-6-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Hongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Selvin Xavier 2024-08-18 21:47:27 -07:00 committed by Jason Gunthorpe
parent d8ea645d69
commit 10a104c0de
2 changed files with 6 additions and 0 deletions
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5
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -4233,6 +4233,11 @@ int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata)
resp.comp_mask |= BNXT_RE_UCNTX_CMASK_POW2_DISABLED;
uctx->cmask |= BNXT_RE_UCNTX_CAP_POW2_DISABLED;
}
if (ureq.comp_mask & BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT) {
resp.comp_mask |= BNXT_RE_UCNTX_CMASK_HAVE_MODE;
resp.mode = rdev->chip_ctx->modes.wqe_mode;
uctx->cmask |= BNXT_RE_UCNTX_CAP_VAR_WQE_ENABLED;
}
}
rc = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));

1
include/uapi/rdma/bnxt_re-abi.h
View File

@ -66,6 +66,7 @@ enum bnxt_re_wqe_mode {
enum {
BNXT_RE_COMP_MASK_REQ_UCNTX_POW2_SUPPORT = 0x01,
BNXT_RE_COMP_MASK_REQ_UCNTX_VAR_WQE_SUPPORT = 0x02,
};
struct bnxt_re_uctx_req {