[PATCH net-next v6 08/14] bnxt: use snapshot in bnxt_cfg_rx_mode

[Stanislav Fomichev <sdf.kernel@gmail.com>]

With the introduction of ndo_set_rx_mode_async (as discussed in [1])
we can call bnxt_cfg_rx_mode directly. Convert bnxt_cfg_rx_mode to
use uc/mc snapshots and move its call in bnxt_sp_task to the
section that resets BNXT_STATE_IN_SP_TASK. Switch to direct call in
bnxt_set_rx_mode.

Link: https://lore.kernel.org/netdev/CACKFLi=5vj8hPqEUKDd8RTw3au5G+zRgQEqjF+6NZnyoNm90KA@mail.gmail.com/ [1]

Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 29 ++++++++++++-----------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 569c7de7c5e4..46a37ce6bebf 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -11034,7 +11034,7 @@ static int bnxt_setup_nitroa0_vnic(struct bnxt *bp)
 	return rc;
 }
 
-static int bnxt_cfg_rx_mode(struct bnxt *);
+static int bnxt_cfg_rx_mode(struct bnxt *, struct netdev_hw_addr_list *, bool);
 static bool bnxt_mc_list_updated(struct bnxt *, u32 *,
 				 const struct netdev_hw_addr_list *);
 
@@ -11130,7 +11130,7 @@ static int bnxt_init_chip(struct bnxt *bp, bool irq_re_init)
 		vnic->rx_mask |= mask;
 	}
 
-	rc = bnxt_cfg_rx_mode(bp);
+	rc = bnxt_cfg_rx_mode(bp, &bp->dev->uc, true);
 	if (rc)
 		goto err_out;
 
@@ -13614,21 +13614,17 @@ static void bnxt_set_rx_mode(struct net_device *dev,
 	if (mask != vnic->rx_mask || uc_update || mc_update) {
 		vnic->rx_mask = mask;
 
-		bnxt_queue_sp_work(bp, BNXT_RX_MASK_SP_EVENT);
+		bnxt_cfg_rx_mode(bp, uc, uc_update);
 	}
 }
 
-static int bnxt_cfg_rx_mode(struct bnxt *bp)
+static int bnxt_cfg_rx_mode(struct bnxt *bp, struct netdev_hw_addr_list *uc,
+			    bool uc_update)
 {
 	struct net_device *dev = bp->dev;
 	struct bnxt_vnic_info *vnic = &bp->vnic_info[BNXT_VNIC_DEFAULT];
 	struct netdev_hw_addr *ha;
 	int i, off = 0, rc;
-	bool uc_update;
-
-	netif_addr_lock_bh(dev);
-	uc_update = bnxt_uc_list_updated(bp, &dev->uc);
-	netif_addr_unlock_bh(dev);
 
 	if (!uc_update)
 		goto skip_uc;
@@ -13643,10 +13639,10 @@ static int bnxt_cfg_rx_mode(struct bnxt *bp)
 	vnic->uc_filter_count = 1;
 
 	netif_addr_lock_bh(dev);
-	if (netdev_uc_count(dev) > (BNXT_MAX_UC_ADDRS - 1)) {
+	if (netdev_hw_addr_list_count(uc) > (BNXT_MAX_UC_ADDRS - 1)) {
 		vnic->rx_mask |= CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS;
 	} else {
-		netdev_for_each_uc_addr(ha, dev) {
+		netdev_hw_addr_list_for_each(ha, uc) {
 			memcpy(vnic->uc_list + off, ha->addr, ETH_ALEN);
 			off += ETH_ALEN;
 			vnic->uc_filter_count++;
@@ -14604,6 +14600,7 @@ static void bnxt_ulp_restart(struct bnxt *bp)
 static void bnxt_sp_task(struct work_struct *work)
 {
 	struct bnxt *bp = container_of(work, struct bnxt, sp_task);
+	struct net_device *dev = bp->dev;
 
 	set_bit(BNXT_STATE_IN_SP_TASK, &bp->state);
 	smp_mb__after_atomic();
@@ -14617,9 +14614,6 @@ static void bnxt_sp_task(struct work_struct *work)
 		bnxt_reenable_sriov(bp);
 	}
 
-	if (test_and_clear_bit(BNXT_RX_MASK_SP_EVENT, &bp->sp_event))
-		bnxt_cfg_rx_mode(bp);
-
 	if (test_and_clear_bit(BNXT_RX_NTP_FLTR_SP_EVENT, &bp->sp_event))
 		bnxt_cfg_ntp_filters(bp);
 	if (test_and_clear_bit(BNXT_HWRM_EXEC_FWD_REQ_SP_EVENT, &bp->sp_event))
@@ -14684,6 +14678,13 @@ static void bnxt_sp_task(struct work_struct *work)
 	/* These functions below will clear BNXT_STATE_IN_SP_TASK.  They
 	 * must be the last functions to be called before exiting.
 	 */
+	if (test_and_clear_bit(BNXT_RX_MASK_SP_EVENT, &bp->sp_event)) {
+		bnxt_lock_sp(bp);
+		if (test_bit(BNXT_STATE_OPEN, &bp->state))
+			bnxt_cfg_rx_mode(bp, &dev->uc, true);
+		bnxt_unlock_sp(bp);
+	}
+
 	if (test_and_clear_bit(BNXT_RESET_TASK_SP_EVENT, &bp->sp_event))
 		bnxt_reset(bp, false);
 
-- 
2.52.0