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[193.12.47.89]) by smtp.gmail.com with ESMTPSA id v11sm2975003ljp.63.2021.03.15.14.15.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Mar 2021 14:15:08 -0700 (PDT) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, netdev@vger.kernel.org Subject: [PATCH net-next 4/5] net: dsa: mv88e6xxx: Offload bridge learning flag Date: Mon, 15 Mar 2021 22:13:59 +0100 Message-Id: <20210315211400.2805330-5-tobias@waldekranz.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315211400.2805330-1-tobias@waldekranz.com> References: <20210315211400.2805330-1-tobias@waldekranz.com> MIME-Version: 1.0 Organization: Westermo Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Allow a user to control automatic learning per port. Many chips have an explicit "LearningDisable"-bit that can be used for this, but we opt for setting/clearing the PAV instead, as it works on all devices at least as far back as 6083. Signed-off-by: Tobias Waldekranz --- drivers/net/dsa/mv88e6xxx/chip.c | 29 +++++++++++++++++++++-------- drivers/net/dsa/mv88e6xxx/port.c | 21 +++++++++++++++++++++ drivers/net/dsa/mv88e6xxx/port.h | 2 ++ 3 files changed, 44 insertions(+), 8 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 01e4ac32d1e5..48e65f22641e 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2689,15 +2689,20 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port) return err; } - /* Port Association Vector: when learning source addresses - * of packets, add the address to the address database using - * a port bitmap that has only the bit for this port set and - * the other bits clear. + /* Port Association Vector: disable automatic address learning + * on all user ports since they start out in standalone + * mode. When joining a bridge, learning will be configured to + * match the bridge port settings. Enable learning on all + * DSA/CPU ports. NOTE: FROM_CPU frames always bypass the + * learning process. + * + * Disable HoldAt1, IntOnAgeOut, LockedPort, IgnoreWrongData, + * and RefreshLocked. I.e. setup standard automatic learning. */ - reg = 1 << port; - /* Disable learning for CPU port */ - if (dsa_is_cpu_port(ds, port)) + if (dsa_is_user_port(ds, port)) reg = 0; + else + reg = 1 << port; err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_ASSOC_VECTOR, reg); @@ -5426,7 +5431,7 @@ static int mv88e6xxx_port_pre_bridge_flags(struct dsa_switch *ds, int port, struct mv88e6xxx_chip *chip = ds->priv; const struct mv88e6xxx_ops *ops; - if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD)) + if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD)) return -EINVAL; ops = chip->info->ops; @@ -5449,6 +5454,14 @@ static int mv88e6xxx_port_bridge_flags(struct dsa_switch *ds, int port, mv88e6xxx_reg_lock(chip); + if (flags.mask & BR_LEARNING) { + u16 pav = (flags.val & BR_LEARNING) ? (1 << port) : 0; + + err = mv88e6xxx_port_set_assoc_vector(chip, port, pav); + if (err) + goto out; + } + if (flags.mask & BR_FLOOD) { bool unicast = !!(flags.val & BR_FLOOD); diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index 4561f289ab76..d716cd61b6c6 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -1171,6 +1171,27 @@ int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port) 0x0001); } +/* Offset 0x0B: Port Association Vector */ + +int mv88e6xxx_port_set_assoc_vector(struct mv88e6xxx_chip *chip, int port, + u16 pav) +{ + u16 reg, mask; + int err; + + err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_ASSOC_VECTOR, + ®); + if (err) + return err; + + mask = GENMASK(mv88e6xxx_num_ports(chip), 0); + reg &= ~mask; + reg |= pav & mask; + + return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_ASSOC_VECTOR, + reg); +} + /* Offset 0x0C: Port ATU Control */ int mv88e6xxx_port_disable_learn_limit(struct mv88e6xxx_chip *chip, int port) diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h index e6d0eaa6aa1d..635b6571a0e9 100644 --- a/drivers/net/dsa/mv88e6xxx/port.h +++ b/drivers/net/dsa/mv88e6xxx/port.h @@ -361,6 +361,8 @@ int mv88e6165_port_set_jumbo_size(struct mv88e6xxx_chip *chip, int port, size_t size); int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port); int mv88e6097_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port); +int mv88e6xxx_port_set_assoc_vector(struct mv88e6xxx_chip *chip, int port, + u16 pav); int mv88e6097_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in, u8 out); int mv88e6390_port_pause_limit(struct mv88e6xxx_chip *chip, int port, u8 in, -- 2.25.1