netdev - [PATCH net-next v2 02/19] bnxt_en: refactor cancellation of resource reservations

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Message-Id: <1635493676-10767-3-git-send-email-michael.chan@broadcom.com>
Date:   Fri, 29 Oct 2021 03:47:39 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, kuba@...nel.org, edwin.peer@...adcom.com,
        gospo@...adcom.com, jiri@...dia.com
Subject: [PATCH net-next v2 02/19] bnxt_en: refactor cancellation of resource reservations

From: Edwin Peer <edwin.peer@...adcom.com>

Resource reservations will also need to be reset after FUNC_DRV_UNRGTR
in the following devlink driver_reinit patch. Extract this logic into a
reusable function.

Signed-off-by: Edwin Peer <edwin.peer@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 47 ++++++++++++++---------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h |  1 +
 2 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 8ff398525488..8471e47d0480 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9691,6 +9691,33 @@ static int bnxt_try_recover_fw(struct bnxt *bp)
 	return -ENODEV;
 }
 
+int bnxt_cancel_reservations(struct bnxt *bp, bool fw_reset)
+{
+	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
+	int rc;
+
+	if (!BNXT_NEW_RM(bp))
+		return 0; /* no resource reservations required */
+
+	rc = bnxt_hwrm_func_resc_qcaps(bp, true);
+	if (rc)
+		netdev_err(bp->dev, "resc_qcaps failed\n");
+
+	hw_resc->resv_cp_rings = 0;
+	hw_resc->resv_stat_ctxs = 0;
+	hw_resc->resv_irqs = 0;
+	hw_resc->resv_tx_rings = 0;
+	hw_resc->resv_rx_rings = 0;
+	hw_resc->resv_hw_ring_grps = 0;
+	hw_resc->resv_vnics = 0;
+	if (!fw_reset) {
+		bp->tx_nr_rings = 0;
+		bp->rx_nr_rings = 0;
+	}
+
+	return rc;
+}
+
 static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 {
 	struct hwrm_func_drv_if_change_output *resp;
@@ -9774,25 +9801,7 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 				return rc;
 			}
 		}
-		if (BNXT_NEW_RM(bp)) {
-			struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
-
-			rc = bnxt_hwrm_func_resc_qcaps(bp, true);
-			if (rc)
-				netdev_err(bp->dev, "resc_qcaps failed\n");
-
-			hw_resc->resv_cp_rings = 0;
-			hw_resc->resv_stat_ctxs = 0;
-			hw_resc->resv_irqs = 0;
-			hw_resc->resv_tx_rings = 0;
-			hw_resc->resv_rx_rings = 0;
-			hw_resc->resv_hw_ring_grps = 0;
-			hw_resc->resv_vnics = 0;
-			if (!fw_reset) {
-				bp->tx_nr_rings = 0;
-				bp->rx_nr_rings = 0;
-			}
-		}
+		rc = bnxt_cancel_reservations(bp, fw_reset);
 	}
 	return rc;
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 55da89cb62b5..5ca4f19936c3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2246,6 +2246,7 @@ void bnxt_tx_enable(struct bnxt *bp);
 int bnxt_update_link(struct bnxt *bp, bool chng_link_state);
 int bnxt_hwrm_set_pause(struct bnxt *);
 int bnxt_hwrm_set_link_setting(struct bnxt *, bool, bool);
+int bnxt_cancel_reservations(struct bnxt *bp, bool fw_reset);
 int bnxt_hwrm_alloc_wol_fltr(struct bnxt *bp);
 int bnxt_hwrm_free_wol_fltr(struct bnxt *bp);
 int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all);
-- 
2.18.1


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