RDMA/bnxt_re: Allocate dev_attr information dynamically

In order to optimize the size of driver private structure,
the memory for dev_attr is allocated dynamically during the
chip context initialization. In order to make certain runtime
decisions, store dev_attr in the qplib_res structure.

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1736446693-6692-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/hw/bnxt_re/bnxt_re.h

@@ -204,7 +204,7 @@ struct bnxt_re_dev {
 	struct bnxt_re_nq_record	*nqr;
 
 	/* Device Resources */
-	struct bnxt_qplib_dev_attr	dev_attr;
+	struct bnxt_qplib_dev_attr	*dev_attr;
 	struct bnxt_qplib_ctx		qplib_ctx;
 	struct bnxt_qplib_res		qplib_res;
 	struct bnxt_qplib_dpi		dpi_privileged;

drivers/infiniband/hw/bnxt_re/hw_counters.c

@@ -348,7 +348,7 @@ int bnxt_re_ib_get_hw_stats(struct ib_device *ibdev,
 			goto done;
 		}
 		bnxt_re_copy_err_stats(rdev, stats, err_s);
-		if (_is_ext_stats_supported(rdev->dev_attr.dev_cap_flags) &&
+		if (_is_ext_stats_supported(rdev->dev_attr->dev_cap_flags) &&
 		    !rdev->is_virtfn) {
 			rc = bnxt_re_get_ext_stat(rdev, stats);
 			if (rc) {

drivers/infiniband/hw/bnxt_re/ib_verbs.c

@@ -159,7 +159,7 @@ static int __qp_access_flags_to_ib(struct bnxt_qplib_chip_ctx *cctx, u8 qflags)
 static void bnxt_re_check_and_set_relaxed_ordering(struct bnxt_re_dev *rdev,
 						   struct bnxt_qplib_mrw *qplib_mr)
 {
-	if (_is_relaxed_ordering_supported(rdev->dev_attr.dev_cap_flags2) &&
+	if (_is_relaxed_ordering_supported(rdev->dev_attr->dev_cap_flags2) &&
 	    pcie_relaxed_ordering_enabled(rdev->en_dev->pdev))
 		qplib_mr->flags |= CMDQ_REGISTER_MR_FLAGS_ENABLE_RO;
 }
@@ -184,7 +184,7 @@ int bnxt_re_query_device(struct ib_device *ibdev,
 			 struct ib_udata *udata)
 {
 	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
-	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+	struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr;
 
 	memset(ib_attr, 0, sizeof(*ib_attr));
 	memcpy(&ib_attr->fw_ver, dev_attr->fw_ver,
@@ -273,7 +273,7 @@ int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
 		       struct ib_port_attr *port_attr)
 {
 	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
-	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+	struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr;
 	int rc;
 
 	memset(port_attr, 0, sizeof(*port_attr));
@@ -331,8 +331,8 @@ void bnxt_re_query_fw_str(struct ib_device *ibdev, char *str)
 	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
 
 	snprintf(str, IB_FW_VERSION_NAME_MAX, "%d.%d.%d.%d",
-		 rdev->dev_attr.fw_ver[0], rdev->dev_attr.fw_ver[1],
-		 rdev->dev_attr.fw_ver[2], rdev->dev_attr.fw_ver[3]);
+		 rdev->dev_attr->fw_ver[0], rdev->dev_attr->fw_ver[1],
+		 rdev->dev_attr->fw_ver[2], rdev->dev_attr->fw_ver[3]);
 }
 
 int bnxt_re_query_pkey(struct ib_device *ibdev, u32 port_num,
@@ -583,7 +583,7 @@ static int bnxt_re_create_fence_mr(struct bnxt_re_pd *pd)
 	mr->qplib_mr.pd = &pd->qplib_pd;
 	mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_PMR;
 	mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags);
-	if (!_is_alloc_mr_unified(rdev->dev_attr.dev_cap_flags)) {
+	if (!_is_alloc_mr_unified(rdev->dev_attr->dev_cap_flags)) {
 		rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr);
 		if (rc) {
 			ibdev_err(&rdev->ibdev, "Failed to alloc fence-HW-MR\n");
@@ -1060,7 +1060,7 @@ static int bnxt_re_setup_swqe_size(struct bnxt_re_qp *qp,
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
 	sq = &qplqp->sq;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	align = sizeof(struct sq_send_hdr);
 	ilsize = ALIGN(init_attr->cap.max_inline_data, align);
@@ -1280,7 +1280,7 @@ static int bnxt_re_init_rq_attr(struct bnxt_re_qp *qp,
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
 	rq = &qplqp->rq;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	if (init_attr->srq) {
 		struct bnxt_re_srq *srq;
@@ -1317,7 +1317,7 @@ static void bnxt_re_adjust_gsi_rq_attr(struct bnxt_re_qp *qp)
 
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) {
 		qplqp->rq.max_sge = dev_attr->max_qp_sges;
@@ -1343,7 +1343,7 @@ static int bnxt_re_init_sq_attr(struct bnxt_re_qp *qp,
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
 	sq = &qplqp->sq;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	sq->max_sge = init_attr->cap.max_send_sge;
 	entries = init_attr->cap.max_send_wr;
@@ -1396,7 +1396,7 @@ static void bnxt_re_adjust_gsi_sq_attr(struct bnxt_re_qp *qp,
 
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx)) {
 		entries = bnxt_re_init_depth(init_attr->cap.max_send_wr + 1, uctx);
@@ -1445,7 +1445,7 @@ static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd,
 
 	rdev = qp->rdev;
 	qplqp = &qp->qplib_qp;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 
 	/* Setup misc params */
 	ether_addr_copy(qplqp->smac, rdev->netdev->dev_addr);
@@ -1615,7 +1615,7 @@ int bnxt_re_create_qp(struct ib_qp *ib_qp, struct ib_qp_init_attr *qp_init_attr,
 	ib_pd = ib_qp->pd;
 	pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd);
 	rdev = pd->rdev;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 	qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp);
 
 	uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx);
@@ -1843,7 +1843,7 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 	ib_pd = ib_srq->pd;
 	pd = container_of(ib_pd, struct bnxt_re_pd, ib_pd);
 	rdev = pd->rdev;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 	srq = container_of(ib_srq, struct bnxt_re_srq, ib_srq);
 
 	if (srq_init_attr->attr.max_wr >= dev_attr->max_srq_wqes) {
@@ -2047,7 +2047,7 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 {
 	struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp);
 	struct bnxt_re_dev *rdev = qp->rdev;
-	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+	struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr;
 	enum ib_qp_state curr_qp_state, new_qp_state;
 	int rc, entries;
 	unsigned int flags;
@@ -3089,7 +3089,7 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	struct ib_udata *udata = &attrs->driver_udata;
 	struct bnxt_re_ucontext *uctx =
 		rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx);
-	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+	struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr;
 	struct bnxt_qplib_chip_ctx *cctx;
 	int cqe = attr->cqe;
 	int rc, entries;
@@ -3224,7 +3224,7 @@ int bnxt_re_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
 
 	cq =  container_of(ibcq, struct bnxt_re_cq, ib_cq);
 	rdev = cq->rdev;
-	dev_attr = &rdev->dev_attr;
+	dev_attr = rdev->dev_attr;
 	if (!ibcq->uobject) {
 		ibdev_err(&rdev->ibdev, "Kernel CQ Resize not supported");
 		return -EOPNOTSUPP;
@@ -4197,7 +4197,7 @@ static struct ib_mr *__bnxt_re_user_reg_mr(struct ib_pd *ib_pd, u64 length, u64
 	mr->qplib_mr.access_flags = __from_ib_access_flags(mr_access_flags);
 	mr->qplib_mr.type = CMDQ_ALLOCATE_MRW_MRW_FLAGS_MR;
 
-	if (!_is_alloc_mr_unified(rdev->dev_attr.dev_cap_flags)) {
+	if (!_is_alloc_mr_unified(rdev->dev_attr->dev_cap_flags)) {
 		rc = bnxt_qplib_alloc_mrw(&rdev->qplib_res, &mr->qplib_mr);
 		if (rc) {
 			ibdev_err(&rdev->ibdev, "Failed to allocate MR rc = %d", rc);
@@ -4289,7 +4289,7 @@ int bnxt_re_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *udata)
 	struct bnxt_re_ucontext *uctx =
 		container_of(ctx, struct bnxt_re_ucontext, ib_uctx);
 	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
-	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+	struct bnxt_qplib_dev_attr *dev_attr = rdev->dev_attr;
 	struct bnxt_re_user_mmap_entry *entry;
 	struct bnxt_re_uctx_resp resp = {};
 	struct bnxt_re_uctx_req ureq = {};

drivers/infiniband/hw/bnxt_re/main.c

@@ -148,6 +148,10 @@ static void bnxt_re_destroy_chip_ctx(struct bnxt_re_dev *rdev)
 
 	if (!rdev->chip_ctx)
 		return;
+
+	kfree(rdev->dev_attr);
+	rdev->dev_attr = NULL;
+
 	chip_ctx = rdev->chip_ctx;
 	rdev->chip_ctx = NULL;
 	rdev->rcfw.res = NULL;
@@ -161,7 +165,7 @@ static int bnxt_re_setup_chip_ctx(struct bnxt_re_dev *rdev)
 {
 	struct bnxt_qplib_chip_ctx *chip_ctx;
 	struct bnxt_en_dev *en_dev;
-	int rc;
+	int rc = -ENOMEM;
 
 	en_dev = rdev->en_dev;
 
@@ -177,24 +181,31 @@ static int bnxt_re_setup_chip_ctx(struct bnxt_re_dev *rdev)
 
 	rdev->qplib_res.cctx = rdev->chip_ctx;
 	rdev->rcfw.res = &rdev->qplib_res;
-	rdev->qplib_res.dattr = &rdev->dev_attr;
+	rdev->dev_attr = kzalloc(sizeof(*rdev->dev_attr), GFP_KERNEL);
+	if (!rdev->dev_attr)
+		goto free_chip_ctx;
+	rdev->qplib_res.dattr = rdev->dev_attr;
 	rdev->qplib_res.is_vf = BNXT_EN_VF(en_dev);
 	rdev->qplib_res.en_dev = en_dev;
 
 	bnxt_re_set_drv_mode(rdev);
 
 	bnxt_re_set_db_offset(rdev);
 	rc = bnxt_qplib_map_db_bar(&rdev->qplib_res);
-	if (rc) {
-		kfree(rdev->chip_ctx);
-		rdev->chip_ctx = NULL;
-		return rc;
-	}
+	if (rc)
+		goto free_dev_attr;
 
 	if (bnxt_qplib_determine_atomics(en_dev->pdev))
 		ibdev_info(&rdev->ibdev,
 			   "platform doesn't support global atomics.");
 	return 0;
+free_dev_attr:
+	kfree(rdev->dev_attr);
+	rdev->dev_attr = NULL;
+free_chip_ctx:
+	kfree(rdev->chip_ctx);
+	rdev->chip_ctx = NULL;
+	return rc;
 }
 
 /* SR-IOV helper functions */
@@ -216,7 +227,7 @@ static void bnxt_re_limit_pf_res(struct bnxt_re_dev *rdev)
 	struct bnxt_qplib_ctx *ctx;
 	int i;
 
-	attr = &rdev->dev_attr;
+	attr = rdev->dev_attr;
 	ctx = &rdev->qplib_ctx;
 
 	ctx->qpc_count = min_t(u32, BNXT_RE_MAX_QPC_COUNT,
@@ -230,7 +241,7 @@ static void bnxt_re_limit_pf_res(struct bnxt_re_dev *rdev)
 	if (!bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx))
 		for (i = 0; i < MAX_TQM_ALLOC_REQ; i++)
 			rdev->qplib_ctx.tqm_ctx.qcount[i] =
-			rdev->dev_attr.tqm_alloc_reqs[i];
+			rdev->dev_attr->tqm_alloc_reqs[i];
 }
 
 static void bnxt_re_limit_vf_res(struct bnxt_qplib_ctx *qplib_ctx, u32 num_vf)
@@ -1726,12 +1737,11 @@ static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
 
 	/* Configure and allocate resources for qplib */
 	rdev->qplib_res.rcfw = &rdev->rcfw;
-	rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr);
+	rc = bnxt_qplib_get_dev_attr(&rdev->rcfw);
 	if (rc)
 		goto fail;
 
-	rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->en_dev->pdev,
-				  rdev->netdev, &rdev->dev_attr);
+	rc = bnxt_qplib_alloc_res(&rdev->qplib_res, rdev->netdev);
 	if (rc)
 		goto fail;
 
@@ -2160,7 +2170,7 @@ static int bnxt_re_dev_init(struct bnxt_re_dev *rdev, u8 op_type)
 			rdev->pacing.dbr_pacing = false;
 		}
 	}
-	rc = bnxt_qplib_get_dev_attr(&rdev->rcfw, &rdev->dev_attr);
+	rc = bnxt_qplib_get_dev_attr(&rdev->rcfw);
 	if (rc)
 		goto disable_rcfw;
 

drivers/infiniband/hw/bnxt_re/qplib_res.c

@@ -876,14 +876,13 @@ void bnxt_qplib_free_res(struct bnxt_qplib_res *res)
 	bnxt_qplib_free_dpi_tbl(res, &res->dpi_tbl);
 }
 
-int bnxt_qplib_alloc_res(struct bnxt_qplib_res *res, struct pci_dev *pdev,
-			 struct net_device *netdev,
-			 struct bnxt_qplib_dev_attr *dev_attr)
+int bnxt_qplib_alloc_res(struct bnxt_qplib_res *res, struct net_device *netdev)
 {
+	struct bnxt_qplib_dev_attr *dev_attr;
 	int rc;
 
-	res->pdev = pdev;
 	res->netdev = netdev;
+	dev_attr = res->dattr;
 
 	rc = bnxt_qplib_alloc_sgid_tbl(res, &res->sgid_tbl, dev_attr->max_sgid);
 	if (rc)

drivers/infiniband/hw/bnxt_re/qplib_res.h

@@ -424,9 +424,7 @@ int bnxt_qplib_dealloc_dpi(struct bnxt_qplib_res *res,
 void bnxt_qplib_cleanup_res(struct bnxt_qplib_res *res);
 int bnxt_qplib_init_res(struct bnxt_qplib_res *res);
 void bnxt_qplib_free_res(struct bnxt_qplib_res *res);
-int bnxt_qplib_alloc_res(struct bnxt_qplib_res *res, struct pci_dev *pdev,
-			 struct net_device *netdev,
-			 struct bnxt_qplib_dev_attr *dev_attr);
+int bnxt_qplib_alloc_res(struct bnxt_qplib_res *res, struct net_device *netdev);
 void bnxt_qplib_free_ctx(struct bnxt_qplib_res *res,
 			 struct bnxt_qplib_ctx *ctx);
 int bnxt_qplib_alloc_ctx(struct bnxt_qplib_res *res,

drivers/infiniband/hw/bnxt_re/qplib_sp.c

@@ -88,9 +88,9 @@ static void bnxt_qplib_query_version(struct bnxt_qplib_rcfw *rcfw,
 	fw_ver[3] = resp.fw_rsvd;
 }
 
-int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
-			    struct bnxt_qplib_dev_attr *attr)
+int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw)
 {
+	struct bnxt_qplib_dev_attr *attr = rcfw->res->dattr;
 	struct creq_query_func_resp resp = {};
 	struct bnxt_qplib_cmdqmsg msg = {};
 	struct creq_query_func_resp_sb *sb;

drivers/infiniband/hw/bnxt_re/qplib_sp.h

@@ -326,8 +326,7 @@ int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 int bnxt_qplib_update_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 			   struct bnxt_qplib_gid *gid, u16 gid_idx,
 			   const u8 *smac);
-int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
-			    struct bnxt_qplib_dev_attr *attr);
+int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw);
 int bnxt_qplib_set_func_resources(struct bnxt_qplib_res *res,
 				  struct bnxt_qplib_rcfw *rcfw,
 				  struct bnxt_qplib_ctx *ctx);