[PATCH net-next 12/13] bnxt_en: Invalidate user filters when needed

[Michael Chan <michael.chan@broadcom.com>]

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From: Pavan Chebbi <pavan.chebbi@broadcom.com>

The cached user filters slated to be reapplied need to
be cleared if configured MAC changes, RSS key changes,
number of rings changes, or ntuple is disabled.

Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c         | 14 ++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c |  3 ++-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 27941ade894a..856fda0c4c1a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4871,6 +4871,17 @@ void bnxt_del_one_usr_fltr(struct bnxt *bp, struct bnxt_filter_base *fltr)
 		list_del_init(&fltr->list);
 }
 
+void bnxt_clear_usr_fltrs(struct bnxt *bp, bool all)
+{
+	struct bnxt_filter_base *usr_fltr, *tmp;
+
+	list_for_each_entry_safe(usr_fltr, tmp, &bp->usr_fltr_list, list) {
+		if (!all && usr_fltr->type == BNXT_FLTR_TYPE_L2)
+			continue;
+		bnxt_del_one_usr_fltr(bp, usr_fltr);
+	}
+}
+
 static void bnxt_del_fltr(struct bnxt *bp, struct bnxt_filter_base *fltr)
 {
 	hlist_del(&fltr->hash);
@@ -12414,6 +12425,8 @@ static int bnxt_set_features(struct net_device *dev, netdev_features_t features)
 
 	if (features & NETIF_F_NTUPLE)
 		flags |= BNXT_FLAG_RFS;
+	else
+		bnxt_clear_usr_fltrs(bp, true);
 
 	changes = flags ^ bp->flags;
 	if (changes & BNXT_FLAG_TPA) {
@@ -13911,6 +13924,7 @@ static int bnxt_change_mac_addr(struct net_device *dev, void *p)
 		return rc;
 
 	eth_hw_addr_set(dev, addr->sa_data);
+	bnxt_clear_usr_fltrs(bp, true);
 	if (netif_running(dev)) {
 		bnxt_close_nic(bp, false, false);
 		rc = bnxt_open_nic(bp, false, false);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 28091889615b..2b2f051ee085 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2655,6 +2655,7 @@ void bnxt_set_ring_params(struct bnxt *);
 int bnxt_set_rx_skb_mode(struct bnxt *bp, bool page_mode);
 void bnxt_insert_usr_fltr(struct bnxt *bp, struct bnxt_filter_base *fltr);
 void bnxt_del_one_usr_fltr(struct bnxt *bp, struct bnxt_filter_base *fltr);
+void bnxt_clear_usr_fltrs(struct bnxt *bp, bool all);
 int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp, unsigned long *bmap,
 			    int bmap_size, bool async_only);
 int bnxt_hwrm_func_drv_unrgtr(struct bnxt *bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 9b5382412db3..a0962026a85f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -968,6 +968,7 @@ static int bnxt_set_channels(struct net_device *dev,
 		return -EINVAL;
 	}
 
+	bnxt_clear_usr_fltrs(bp, true);
 	if (netif_running(dev)) {
 		if (BNXT_PF(bp)) {
 			/* TODO CHIMP_FW: Send message to all VF's
@@ -1769,7 +1770,7 @@ static int bnxt_set_rxfh(struct net_device *dev,
 		if (pad)
 			memset(&bp->rss_indir_tbl[i], 0, pad * sizeof(u16));
 	}
-
+	bnxt_clear_usr_fltrs(bp, false);
 	if (netif_running(bp->dev)) {
 		bnxt_close_nic(bp, false, false);
 		rc = bnxt_open_nic(bp, false, false);
-- 
2.30.1


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