diff options
| author | Steffen Bätz <steffen@innosonix.de> | 2023-03-29 12:01:40 -0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-30 11:31:24 -0700 |
| commit | 7bcad0f0e6fbc1d613e49e0ee35c8e5f2e685bb0 (patch) | |
| tree | 2682e7f816a97764be5774b9cc9d64090f9f0e57 | |
| parent | 2eca98e5b24d01c02b46c67be05a5f98cc9789b1 (diff) | |
| download | lwn-7bcad0f0e6fbc1d613e49e0ee35c8e5f2e685bb0.tar.gz lwn-7bcad0f0e6fbc1d613e49e0ee35c8e5f2e685bb0.zip | |
net: dsa: mv88e6xxx: Enable IGMP snooping on user ports only
Do not set the MV88E6XXX_PORT_CTL0_IGMP_MLD_SNOOP bit on CPU or DSA ports.
This allows the host CPU port to be a regular IGMP listener by sending out
IGMP Membership Reports, which would otherwise not be forwarded by the
mv88exxx chip, but directly looped back to the CPU port itself.
Fixes: 54d792f257c6 ("net: dsa: Centralise global and port setup code into mv88e6xxx.")
Signed-off-by: Steffen Bätz <steffen@innosonix.de>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230329150140.701559-1-festevam@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 30383c4f8fd0..0de7b3611202 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -3354,9 +3354,14 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) * If this is the upstream port for this switch, enable * forwarding of unknown unicasts and multicasts. */ - reg = MV88E6XXX_PORT_CTL0_IGMP_MLD_SNOOP | - MV88E6185_PORT_CTL0_USE_TAG | MV88E6185_PORT_CTL0_USE_IP | + reg = MV88E6185_PORT_CTL0_USE_TAG | MV88E6185_PORT_CTL0_USE_IP | MV88E6XXX_PORT_CTL0_STATE_FORWARDING; + /* Forward any IPv4 IGMP or IPv6 MLD frames received + * by a USER port to the CPU port to allow snooping. + */ + if (dsa_is_user_port(ds, port)) + reg |= MV88E6XXX_PORT_CTL0_IGMP_MLD_SNOOP; + err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_CTL0, reg); if (err) return err; |