[PATCH net-next v4 5/5] net: dsa: microchip: apply KSZ87xx family fixes wrt datasheet

vtpieter
2024-08-12T08:51:22Z

The KSZ87xx switches have 32 static MAC address table entries and not
8. This fixes -ENOSPC non-critical errors from ksz8_add_sta_mac when
configured as a bridge.

Add a new ksz87xx_dev_ops structure to be able to use the
ksz_r_mib_stat64 pointer for this family; this corrects a wrong
mib->counters cast to ksz88xx_stats_raw. This fixes iproute2
statistics. Rename ksz8_dev_ops structure to ksz88x3_dev_ops, in line
with ksz_is_* naming conventions from ksz_common.h.

Fix the tag_ksz egress mask, the port is encoded in the two and not
three LSB. This fix is for completeness, bit 2 must be 0 in most if
not all cases because it works without it for the KSZ8794.

Signed-off-by: Pieter Van Trappen <pieter.van.trappen@cern.ch>
---
drivers/net/dsa/microchip/ksz_common.c | 51 ++++++++++++++++++++++----
net/dsa/tag_ksz.c | 2 +-
2 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 3f3230d181d8..cd3991792b69 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -277,7 +277,7 @@ static const struct phylink_mac_ops ksz8_phylink_mac_ops = {
.mac_link_up = ksz8_phylink_mac_link_up,
};

-static const struct ksz_dev_ops ksz8_dev_ops = {
+static const struct ksz_dev_ops ksz88x3_dev_ops = {
.setup = ksz8_setup,
.get_port_addr = ksz8_get_port_addr,
.cfg_port_member = ksz8_cfg_port_member,
@@ -312,6 +312,41 @@ static const struct ksz_dev_ops ksz8_dev_ops = {
.pme_pwrite8 = ksz8_pme_pwrite8,
};

+static const struct ksz_dev_ops ksz87xx_dev_ops = {
+ .setup = ksz8_setup,
+ .get_port_addr = ksz8_get_port_addr,
+ .cfg_port_member = ksz8_cfg_port_member,
+ .flush_dyn_mac_table = ksz8_flush_dyn_mac_table,
+ .port_setup = ksz8_port_setup,
+ .r_phy = ksz8_r_phy,
+ .w_phy = ksz8_w_phy,
+ .r_mib_cnt = ksz8_r_mib_cnt,
+ .r_mib_pkt = ksz8_r_mib_pkt,
+ .r_mib_stat64 = ksz_r_mib_stats64,
+ .freeze_mib = ksz8_freeze_mib,
+ .port_init_cnt = ksz8_port_init_cnt,
+ .fdb_dump = ksz8_fdb_dump,
+ .fdb_add = ksz8_fdb_add,
+ .fdb_del = ksz8_fdb_del,
+ .mdb_add = ksz8_mdb_add,
+ .mdb_del = ksz8_mdb_del,
+ .vlan_filtering = ksz8_port_vlan_filtering,
+ .vlan_add = ksz8_port_vlan_add,
+ .vlan_del = ksz8_port_vlan_del,
+ .mirror_add = ksz8_port_mirror_add,
+ .mirror_del = ksz8_port_mirror_del,
+ .get_caps = ksz8_get_caps,
+ .config_cpu_port = ksz8_config_cpu_port,
+ .enable_stp_addr = ksz8_enable_stp_addr,
+ .reset = ksz8_reset_switch,
+ .init = ksz8_switch_init,
+ .exit = ksz8_switch_exit,
+ .change_mtu = ksz8_change_mtu,
+ .pme_write8 = ksz8_pme_write8,
+ .pme_pread8 = ksz8_pme_pread8,
+ .pme_pwrite8 = ksz8_pme_pwrite8,
+};
+
static void ksz9477_phylink_mac_link_up(struct phylink_config *config,
struct phy_device *phydev,
unsigned int mode,
@@ -1262,12 +1297,12 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.dev_name = "KSZ8795",
.num_vlans = 4096,
.num_alus = 0,
- .num_statics = 8,
+ .num_statics = 32,
.cpu_ports = 0x10, /* can be configured as cpu port */
.port_cnt = 5, /* total cpu and user ports */
.num_tx_queues = 4,
.num_ipms = 4,
- .ops = &ksz8_dev_ops,
+ .ops = &ksz87xx_dev_ops,
.phylink_mac_ops = &ksz8_phylink_mac_ops,
.ksz87xx_eee_link_erratum = true,
.mib_names = ksz9477_mib_names,
@@ -1303,12 +1338,12 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.dev_name = "KSZ8794",
.num_vlans = 4096,
.num_alus = 0,
- .num_statics = 8,
+ .num_statics = 32,
.cpu_ports = 0x10, /* can be configured as cpu port */
.port_cnt = 5, /* total cpu and user ports */
.num_tx_queues = 4,
.num_ipms = 4,
- .ops = &ksz8_dev_ops,
+ .ops = &ksz87xx_dev_ops,
.phylink_mac_ops = &ksz8_phylink_mac_ops,
.ksz87xx_eee_link_erratum = true,
.mib_names = ksz9477_mib_names,
@@ -1330,12 +1365,12 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.dev_name = "KSZ8765",
.num_vlans = 4096,
.num_alus = 0,
- .num_statics = 8,
+ .num_statics = 32,
.cpu_ports = 0x10, /* can be configured as cpu port */
.port_cnt = 5, /* total cpu and user ports */
.num_tx_queues = 4,
.num_ipms = 4,
- .ops = &ksz8_dev_ops,
+ .ops = &ksz87xx_dev_ops,
.phylink_mac_ops = &ksz8_phylink_mac_ops,
.ksz87xx_eee_link_erratum = true,
.mib_names = ksz9477_mib_names,
@@ -1362,7 +1397,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.port_cnt = 3,
.num_tx_queues = 4,
.num_ipms = 4,
- .ops = &ksz8_dev_ops,
+ .ops = &ksz88x3_dev_ops,
.phylink_mac_ops = &ksz8830_phylink_mac_ops,
.mib_names = ksz88xx_mib_names,
.mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index ee7b272ab715..a0f9965de027 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -141,7 +141,7 @@ static struct sk_buff *ksz8795_rcv(struct sk_buff *skb, struct net_device *dev)
{
u8 *tag = skb_tail_pointer(skb) - KSZ_EGRESS_TAG_LEN;

- return ksz_common_rcv(skb, dev, tag[0] & 7, KSZ_EGRESS_TAG_LEN);
+ return ksz_common_rcv(skb, dev, tag[0] & 3, KSZ_EGRESS_TAG_LEN);
}

static const struct dsa_device_ops ksz8795_netdev_ops = {
--
2.43.0