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net: sparx5: add support for mrouter ports

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All multicast should be forwarded to mrouter ports. Mrouter ports must
therefore be part of all active multicast groups, and override flooding
from being disabled.

Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Casper Andersson 2022-08-25 11:28:37 +02:00 • committed by David S. Miller
parent c8a3ea43b5
commit 04e551d66d
4 changed files with 80 additions and 7 deletions
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1
drivers/net/ethernet/microchip/sparx5/sparx5_main.c
View file

@ -277,6 +277,7 @@ static int sparx5_create_port(struct sparx5 *sparx5,
spx5_port->custom_etype = 0x8880; /* Vitesse */
spx5_port->phylink_pcs.poll = true;
spx5_port->phylink_pcs.ops = &sparx5_phylink_pcs_ops;
spx5_port->is_mrouter = false;
sparx5->ports[config->portno] = spx5_port;
err = sparx5_port_init(sparx5, spx5_port, &config->conf);

2
drivers/net/ethernet/microchip/sparx5/sparx5_main.h
View file

@ -190,6 +190,7 @@ struct sparx5_port {
u8 ptp_cmd;
u16 ts_id;
struct sk_buff_head tx_skbs;
bool is_mrouter;
};
enum sparx5_core_clockfreq {
@ -338,6 +339,7 @@ void sparx5_mact_init(struct sparx5 *sparx5);
/* sparx5_vlan.c */
void sparx5_pgid_update_mask(struct sparx5_port *port, int pgid, bool enable);
void sparx5_pgid_clear(struct sparx5 *spx5, int pgid);
void sparx5_pgid_read_mask(struct sparx5 *sparx5, int pgid, u32 portmask[3]);
void sparx5_update_fwd(struct sparx5 *sparx5);
void sparx5_vlan_init(struct sparx5 *sparx5);

77
drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
View file

@ -29,14 +29,23 @@ static int sparx5_port_attr_pre_bridge_flags(struct sparx5_port *port,
return 0;
}
static void sparx5_port_update_mcast_ip_flood(struct sparx5_port *port, bool flood_flag)
{
bool should_flood = flood_flag || port->is_mrouter;
int pgid;
for (pgid = PGID_IPV4_MC_DATA; pgid <= PGID_IPV6_MC_CTRL; pgid++)
sparx5_pgid_update_mask(port, pgid, should_flood);
}
static void sparx5_port_attr_bridge_flags(struct sparx5_port *port,
struct switchdev_brport_flags flags)
{
int pgid;
if (flags.mask & BR_MCAST_FLOOD) {
sparx5_pgid_update_mask(port, PGID_MC_FLOOD, !!(flags.val & BR_MCAST_FLOOD));
sparx5_port_update_mcast_ip_flood(port, !!(flags.val & BR_MCAST_FLOOD));
}
if (flags.mask & BR_MCAST_FLOOD)
for (pgid = PGID_MC_FLOOD; pgid <= PGID_IPV6_MC_CTRL; pgid++)
sparx5_pgid_update_mask(port, pgid, !!(flags.val & BR_MCAST_FLOOD));
if (flags.mask & BR_FLOOD)
sparx5_pgid_update_mask(port, PGID_UC_FLOOD, !!(flags.val & BR_FLOOD));
if (flags.mask & BR_BCAST_FLOOD)
@ -82,6 +91,37 @@ static void sparx5_port_attr_ageing_set(struct sparx5_port *port,
sparx5_set_ageing(port->sparx5, ageing_time);
}
static void sparx5_port_attr_mrouter_set(struct sparx5_port *port,
struct net_device *orig_dev,
bool enable)
{
struct sparx5 *sparx5 = port->sparx5;
struct sparx5_mdb_entry *e;
bool flood_flag;
if ((enable && port->is_mrouter) || (!enable && !port->is_mrouter))
return;
/* Add/del mrouter port on all active mdb entries in HW.
* Don't change entry port mask, since that represents
* ports that actually joined that group.
*/
mutex_lock(&sparx5->mdb_lock);
list_for_each_entry(e, &sparx5->mdb_entries, list) {
if (!test_bit(port->portno, e->port_mask) &&
ether_addr_is_ip_mcast(e->addr))
sparx5_pgid_update_mask(port, e->pgid_idx, enable);
}
mutex_unlock(&sparx5->mdb_lock);
/* Enable/disable flooding depending on if port is mrouter port
* or if mcast flood is enabled.
*/
port->is_mrouter = enable;
flood_flag = br_port_flag_is_set(port->ndev, BR_MCAST_FLOOD);
sparx5_port_update_mcast_ip_flood(port, flood_flag);
}
static int sparx5_port_attr_set(struct net_device *dev, const void *ctx,
const struct switchdev_attr *attr,
struct netlink_ext_ack *extack)
@ -110,6 +150,11 @@ static int sparx5_port_attr_set(struct net_device *dev, const void *ctx,
port->vlan_aware = attr->u.vlan_filtering;
sparx5_vlan_port_apply(port->sparx5, port);
break;
case SWITCHDEV_ATTR_ID_PORT_MROUTER:
sparx5_port_attr_mrouter_set(port,
attr->orig_dev,
attr->u.mrouter);
break;
default:
return -EOPNOTSUPP;
}
@ -472,8 +517,8 @@ static int sparx5_handle_port_mdb_add(struct net_device *dev,
struct sparx5_port *port = netdev_priv(dev);
struct sparx5 *spx5 = port->sparx5;
struct sparx5_mdb_entry *entry;
bool is_host;
int err;
bool is_host, is_new;
int err, i;
u16 vid;
if (!sparx5_netdevice_check(dev))
@ -489,14 +534,25 @@ static int sparx5_handle_port_mdb_add(struct net_device *dev,
else
vid = v->vid;
is_new = false;
entry = sparx5_mdb_get_entry(spx5, v->addr, vid);
if (!entry) {
err = sparx5_alloc_mdb_entry(spx5, v->addr, vid, &entry);
is_new = true;
if (err)
return err;
}
mutex_lock(&spx5->mdb_lock);
/* Add any mrouter ports to the new entry */
if (is_new && ether_addr_is_ip_mcast(v->addr))
for (i = 0; i < SPX5_PORTS; i++)
if (spx5->ports[i] && spx5->ports[i]->is_mrouter)
sparx5_pgid_update_mask(spx5->ports[i],
entry->pgid_idx,
true);
if (is_host && !entry->cpu_copy) {
sparx5_cpu_copy_ena(spx5, entry->pgid_idx, true);
entry->cpu_copy = true;
@ -541,11 +597,18 @@ static int sparx5_handle_port_mdb_del(struct net_device *dev,
entry->cpu_copy = false;
} else if (!is_host) {
clear_bit(port->portno, entry->port_mask);
sparx5_pgid_update_mask(port, entry->pgid_idx, false);
/* Port not mrouter port or addr is L2 mcast, remove port from mask. */
if (!port->is_mrouter || !ether_addr_is_ip_mcast(v->addr))
sparx5_pgid_update_mask(port, entry->pgid_idx, false);
}
mutex_unlock(&spx5->mdb_lock);
if (bitmap_empty(entry->port_mask, SPX5_PORTS) && !entry->cpu_copy) {
/* Clear pgid in case mrouter ports exists
* that are not part of the group.
*/
sparx5_pgid_clear(spx5, entry->pgid_idx);
sparx5_mact_forget(spx5, entry->addr, entry->vid);
sparx5_free_mdb_entry(spx5, entry->addr, entry->vid);
}

7
drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
View file

@ -138,6 +138,13 @@ void sparx5_pgid_update_mask(struct sparx5_port *port, int pgid, bool enable)
}
}
void sparx5_pgid_clear(struct sparx5 *spx5, int pgid)
{
spx5_wr(0, spx5, ANA_AC_PGID_CFG(pgid));
spx5_wr(0, spx5, ANA_AC_PGID_CFG1(pgid));
spx5_wr(0, spx5, ANA_AC_PGID_CFG2(pgid));
}
void sparx5_pgid_read_mask(struct sparx5 *spx5, int pgid, u32 portmask[3])
{
portmask[0] = spx5_rd(spx5, ANA_AC_PGID_CFG(pgid));