[PATCH AUTOSEL 5.1 067/375] net: ethernet: ti: cpsw: fix allmulti cfg in dual_mac mode

Sasha Levin
2019-05-22T19:23:22Z

From: Grygorii Strashko <grygorii.strashko@ti.com>

[ Upstream commit 06095f34f8a0a2c4c83a19514c272699edd5f80b ]

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@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/ti/cpsw.c | 12 +++++++++---
drivers/net/ethernet/ti/cpsw_ale.c | 19 ++++++++++---------
drivers/net/ethernet/ti/cpsw_ale.h | 3 +--
3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index a591583d120e1..dd12b73a88530 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -800,12 +800,17 @@ 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 */
@@ -813,7 +818,8 @@ 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 798c989d5d934..b3d9591b4824a 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -482,24 +482,25 @@ int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask)
}
EXPORT_SYMBOL_GPL(cpsw_ale_del_vlan);

-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;
-
- /* Only bother doing the work if the setting is actually changing */
- if (ale->allmulti == allmulti)
- return;
-
- /* Remember the new setting to check against next time */
- ale->allmulti = allmulti;
+ int type, idx;

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 cd07a3e96d576..1fe196d8a5e42 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -37,7 +37,6 @@ struct cpsw_ale {
struct cpsw_ale_params params;
struct timer_list timer;
unsigned long ageout;
- int allmulti;
u32 version;
/* These bits are different on NetCP NU Switch ALE */
u32 port_mask_bits;
@@ -116,7 +115,7 @@ 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,
--
2.20.1