Re: [PATCH net-next 11/19] net: ethernet: ti: cpsw: fix allmulti cfg in dual_mac mode

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On Tue, Apr 23, 2019 at 04:09:02PM +0300, Grygorii Strashko wrote:
Now CPSW ALE will set/clean Host port bit in Unregistered Multicast Flood
Mask (UNREG_MCAST_FLOOD_MASK) for every VLAN without checking if this port
belongs to VLAN or not when ALLMULTI mode flag is set for nedev. This is
working in non dual_mac mode, but in dual_mac - it causes
enabling/disabling ALLMULTI flag for both ports.

Hence fix it by adding additional parameter to cpsw_ale_set_allmulti() to
specify ALE port number for which ALLMULTI has to be enabled and check if
port belongs to VLAN before modifying UNREG_MCAST_FLOOD_MASK.

Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
---
drivers/net/ethernet/ti/cpsw.c     | 12 +++++++++---
drivers/net/ethernet/ti/cpsw_ale.c | 12 ++++++++++--
drivers/net/ethernet/ti/cpsw_ale.h |  2 +-
3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index fe3d145846d2..c497992f01f7 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -793,12 +793,17 @@ static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)

static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
{
-	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
+	struct cpsw_priv *priv = netdev_priv(ndev);
+	struct cpsw_common *cpsw = priv->cpsw;
+	int slave_port = -1;
+
+	if (cpsw->data.dual_emac)
+		slave_port = priv->emac_port + 1;

	if (ndev->flags & IFF_PROMISC) {
		/* Enable promiscuous mode */
		cpsw_set_promiscious(ndev, true);
-		cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI);
+		cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
		return;
	} else {
		/* Disable promiscuous mode */
@@ -806,7 +811,8 @@ static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
	}

	/* Restore allmulti on vlans if necessary */
-	cpsw_ale_set_allmulti(cpsw->ale, ndev->flags & IFF_ALLMULTI);
+	cpsw_ale_set_allmulti(cpsw->ale,
+			      ndev->flags & IFF_ALLMULTI, slave_port);

	/* add/remove mcast address either for real netdev or for vlan */
	__hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 83ccb422dddd..f7369982ae33 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -468,11 +468,11 @@ int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask)
	return 0;
}

-void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti)
+void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti, int port)
{
	u32 ale_entry[ALE_ENTRY_WORDS];
-	int type, idx;
	int unreg_mcast = 0;
+	int type, idx;

	/* Only bother doing the work if the setting is actually changing */
	if (ale->allmulti == allmulti)
@@ -482,10 +482,18 @@ void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti)
	ale->allmulti = allmulti;
Should ale->allmulti be removed? as "set" is per port now.


	for (idx = 0; idx < ale->params.ale_entries; idx++) {
+		int vlan_members;
+
		cpsw_ale_read(ale, idx, ale_entry);
		type = cpsw_ale_get_entry_type(ale_entry);
		if (type != ALE_TYPE_VLAN)
			continue;
+		vlan_members =
+			cpsw_ale_get_vlan_member_list(ale_entry,
+						      ale->vlan_field_bits);
+
+		if (port != -1 && !(vlan_members & BIT(port)))
+			continue;

		unreg_mcast =
			cpsw_ale_get_vlan_unreg_mcast(ale_entry,
diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h
index 4777d626fac8..8a0d25950dc1 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -109,7 +109,7 @@ int cpsw_ale_del_mcast(struct cpsw_ale *ale, const u8 *addr, int port_mask,
int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port, int untag,
			int reg_mcast, int unreg_mcast);
int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port);
-void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti);
+void cpsw_ale_set_allmulti(struct cpsw_ale *ale, int allmulti, int port);

int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control);
int cpsw_ale_control_set(struct cpsw_ale *ale, int port,
--
2.17.1


--
Regards,
Ivan Khoronzhuk



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