RDMA/bnxt_re: Enable pacing support for the user apps

Report the pacing capability to the user applications.

Link: https://lore.kernel.org/r/1689742977-9128-5-git-send-email-selvin.xavier@broadcom.comSigned-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/bnxt_re/ib_verbs.c

@@ -4075,6 +4075,8 @@ int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata)
 		goto cfail;
 	}
 	uctx->shpage_mmap = &entry->rdma_entry;
+	if (rdev->pacing.dbr_pacing)
+		resp.comp_mask |= BNXT_RE_UCNTX_CMASK_DBR_PACING_ENABLED;
 
 	rc = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
 	if (rc) {

include/uapi/rdma/bnxt_re-abi.h

@@ -53,6 +53,7 @@ enum {
 	BNXT_RE_UCNTX_CMASK_HAVE_CCTX = 0x1ULL,
 	BNXT_RE_UCNTX_CMASK_HAVE_MODE = 0x02ULL,
 	BNXT_RE_UCNTX_CMASK_WC_DPI_ENABLED = 0x04ULL,
+	BNXT_RE_UCNTX_CMASK_DBR_PACING_ENABLED = 0x08ULL,
 };
 
 enum bnxt_re_wqe_mode {