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net: lan966x: Update mdb when enabling/disabling mcast_snooping

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When the multicast snooping is disabled, the mdb entries should be
removed from the HW, but they still need to be kept in memory for when
the mcast_snooping will be enabled again.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur 2022-02-04 10:14:52 +01:00 committed by David S. Miller
parent 47aeea0d57
commit add2c844db
3 changed files with 51 additions and 0 deletions
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2
drivers/net/ethernet/microchip/lan966x/lan966x_main.h
View File

@ -267,6 +267,8 @@ int lan966x_handle_port_mdb_del(struct lan966x_port *port,
const struct switchdev_obj *obj);
void lan966x_mdb_erase_entries(struct lan966x *lan966x, u16 vid);
void lan966x_mdb_write_entries(struct lan966x *lan966x, u16 vid);
void lan966x_mdb_clear_entries(struct lan966x *lan966x);
void lan966x_mdb_restore_entries(struct lan966x *lan966x);
int lan966x_ptp_init(struct lan966x *lan966x);
void lan966x_ptp_deinit(struct lan966x *lan966x);

45
drivers/net/ethernet/microchip/lan966x/lan966x_mdb.c
View File

@ -504,3 +504,48 @@ void lan966x_mdb_erase_entries(struct lan966x *lan966x, u16 vid)
lan966x_mdb_l2_cpu_remove(lan966x, mdb_entry, type);
}
}
void lan966x_mdb_clear_entries(struct lan966x *lan966x)
{
struct lan966x_mdb_entry *mdb_entry;
enum macaccess_entry_type type;
unsigned char mac[ETH_ALEN];
list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) {
type = lan966x_mdb_classify(mdb_entry->mac);
lan966x_mdb_encode_mac(mac, mdb_entry, type);
/* Remove just the MAC entry, still keep the PGID in case of L2
* entries because this can be restored at later point
*/
lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type);
}
}
void lan966x_mdb_restore_entries(struct lan966x *lan966x)
{
struct lan966x_mdb_entry *mdb_entry;
enum macaccess_entry_type type;
unsigned char mac[ETH_ALEN];
bool cpu_copy = false;
list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) {
type = lan966x_mdb_classify(mdb_entry->mac);
lan966x_mdb_encode_mac(mac, mdb_entry, type);
if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) {
/* Copy the frame to CPU only if the CPU is in the VLAN */
if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
mdb_entry->vid) &&
mdb_entry->cpu_copy)
cpu_copy = true;
lan966x_mac_ip_learn(lan966x, cpu_copy, mac,
mdb_entry->vid, type);
} else {
lan966x_mac_learn(lan966x, mdb_entry->pgid->index,
mdb_entry->mac,
mdb_entry->vid, type);
}
}
}

4
drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
View File

@ -185,6 +185,10 @@ static void lan966x_port_mc_set(struct lan966x_port *port, bool mcast_ena)
struct lan966x *lan966x = port->lan966x;
port->mcast_ena = mcast_ena;
if (mcast_ena)
lan966x_mdb_restore_entries(lan966x);
else
lan966x_mdb_clear_entries(lan966x);
lan_rmw(ANA_CPU_FWD_CFG_IGMP_REDIR_ENA_SET(mcast_ena) |
ANA_CPU_FWD_CFG_MLD_REDIR_ENA_SET(mcast_ena) |