RDMA/bnxt_re: Add support for unique GID

- RawEth QP requires unique GID so that per function stats_ctx
  is not polluted by packets mirrored to RoCE vnic.
- Added support to add unique GID when RawEth type QP is created.
- Added support to destroy unique GID when RawEth type QP is
  destroyed.
- Allocated exclusive stats_ctx to use for RawEth type QP.

Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Reviewed-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Link: https://patch.msgid.link/20250822040801.776196-6-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 6788f74ed8eb..a6ff21aa139a 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -2039,6 +2039,42 @@ free_stat_mem:
 	return rc;
 }
 
+static int bnxt_re_get_stats3_ctx(struct bnxt_re_dev *rdev)
+{
+	struct bnxt_qplib_ctx *hctx = &rdev->qplib_ctx;
+	struct bnxt_qplib_res *res = &rdev->qplib_res;
+	int rc;
+
+	if (!rdev->rcfw.roce_mirror)
+		return 0;
+
+	rc = bnxt_qplib_alloc_stats_ctx(res->pdev, res->cctx, &hctx->stats3);
+	if (rc)
+		return rc;
+
+	rc = bnxt_re_net_stats_ctx_alloc(rdev, &hctx->stats3);
+	if (rc)
+		goto free_stat_mem;
+
+	return 0;
+free_stat_mem:
+	bnxt_qplib_free_stats_ctx(res->pdev, &hctx->stats3);
+
+	return rc;
+}
+
+static void bnxt_re_put_stats3_ctx(struct bnxt_re_dev *rdev)
+{
+	struct bnxt_qplib_ctx *hctx = &rdev->qplib_ctx;
+	struct bnxt_qplib_res *res = &rdev->qplib_res;
+
+	if (!rdev->rcfw.roce_mirror)
+		return;
+
+	bnxt_re_net_stats_ctx_free(rdev, hctx->stats3.fw_id);
+	bnxt_qplib_free_stats_ctx(res->pdev, &hctx->stats3);
+}
+
 static void bnxt_re_put_stats_ctx(struct bnxt_re_dev *rdev)
 {
 	struct bnxt_qplib_ctx *hctx = &rdev->qplib_ctx;
@@ -2061,6 +2097,8 @@ static void bnxt_re_dev_uninit(struct bnxt_re_dev *rdev, u8 op_type)
 	if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
 		cancel_delayed_work_sync(&rdev->worker);
 
+	bnxt_re_put_stats3_ctx(rdev);
+
 	if (test_and_clear_bit(BNXT_RE_FLAG_RESOURCES_INITIALIZED,
 			       &rdev->flags))
 		bnxt_re_cleanup_res(rdev);
@@ -2281,6 +2319,10 @@ static int bnxt_re_dev_init(struct bnxt_re_dev *rdev, u8 op_type)
 	bnxt_re_init_dcb_wq(rdev);
 	bnxt_re_net_register_async_event(rdev);
 
+	rc = bnxt_re_get_stats3_ctx(rdev);
+	if (rc)
+		goto fail;
+
 	return 0;
 free_sctx:
 	bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);