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net: dsa: lan9303: Add STP ALR entry on port 0 

STP BPDUs arriving on user ports must sent to CPU port only,
for processing by the SW bridge.

Add an ALR entry with STP state override to fix that.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Egil Hjelmeland 2017-10-31 15:48:01 +01:00 committed by David S. Miller
parent 909fb9ae32
commit e9292f2c03
3 changed files with 4 additions and 1 deletions
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2
drivers/net/dsa/lan9303-core.c
View File

@ -773,6 +773,7 @@ static int lan9303_separate_ports(struct lan9303 *chip)
{
int ret;
lan9303_alr_del_port(chip, eth_stp_addr, 0);
ret = lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_MIRROR,
LAN9303_SWE_PORT_MIRROR_SNIFFER_PORT0 |
LAN9303_SWE_PORT_MIRROR_MIRRORED_PORT1 |
@ -797,6 +798,7 @@ static void lan9303_bridge_ports(struct lan9303 *chip)
lan9303_write_switch_reg(chip, LAN9303_SWE_PORT_STATE,
chip->swe_port_state);
lan9303_alr_add_port(chip, eth_stp_addr, 0, true);
}
static int lan9303_handle_reset(struct lan9303 *chip)

2
include/linux/dsa/lan9303.h
View File

@ -34,3 +34,5 @@ struct lan9303 {
**/
struct lan9303_alr_cache_entry alr_cache[LAN9303_NUM_ALR_RECORDS];
};
#define eth_stp_addr eth_reserved_addr_base

1
net/dsa/tag_lan9303.c
View File

@ -42,7 +42,6 @@
#define LAN9303_TAG_LEN 4
# define LAN9303_TAG_TX_USE_ALR BIT(3)
# define LAN9303_TAG_TX_STP_OVERRIDE BIT(4)
#define eth_stp_addr eth_reserved_addr_base
/* Decide whether to transmit using ALR lookup, or transmit directly to
* port using tag. ALR learning is performed only when using ALR lookup.