Commit 10a104c0 authored by Selvin Xavier's avatar Selvin Xavier Committed by Jason Gunthorpe
Browse files

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

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: default avatarHongguang Gao <hongguang.gao@broadcom.com>
Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent d8ea645d

drivers/infiniband/hw/bnxt_re/ib_verbs.c

+5 −0
Original line number Diff line number Diff line
@@ -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)));

include/uapi/rdma/bnxt_re-abi.h

+1 −0
Original line number Diff line number Diff line
@@ -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 {