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Miller" , Jakub Kicinski , Russell King , Paolo Abeni , Alexander Duyck , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Lukasz Majewski Subject: [PATCH v3 1/3] dsa: marvell: Provide per device information about max frame size Date: Mon, 2 Jan 2023 16:02:07 +0100 Message-Id: <20230102150209.985419-1-lukma@denx.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1753923501214898400?= X-GMAIL-MSGID: =?utf-8?q?1753923501214898400?= Different Marvell DSA switches support different size of max frame bytes to be sent. For example mv88e6185 supports max 1632 bytes, which is now in-driver standard value. On the other hand - mv88e6250 supports 2048 bytes. As this value is internal and may be different for each switch IC, new entry in struct mv88e6xxx_info has been added to store it. Signed-off-by: Lukasz Majewski --- Changes for v2: - Define max_frame_size with default value of 1632 bytes, - Set proper value for the mv88e6250 switch SoC (linkstreet) family Changes for v3: - Add default value for 1632B of the max frame size (to avoid problems with not defined values) --- drivers/net/dsa/mv88e6xxx/chip.c | 13 ++++++++++++- drivers/net/dsa/mv88e6xxx/chip.h | 1 + 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 242b8b325504..19668e549391 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -3548,7 +3548,9 @@ static int mv88e6xxx_get_max_mtu(struct dsa_switch *ds, int port) if (chip->info->ops->port_set_jumbo_size) return 10240 - VLAN_ETH_HLEN - EDSA_HLEN - ETH_FCS_LEN; else if (chip->info->ops->set_max_frame_size) - return 1632 - VLAN_ETH_HLEN - EDSA_HLEN - ETH_FCS_LEN; + return (max_t(int, chip->info->max_frame_size, 1632) + - VLAN_ETH_HLEN - EDSA_HLEN - ETH_FCS_LEN); + return 1522 - VLAN_ETH_HLEN - EDSA_HLEN - ETH_FCS_LEN; } @@ -4955,6 +4957,7 @@ static const struct mv88e6xxx_ops mv88e6250_ops = { .avb_ops = &mv88e6352_avb_ops, .ptp_ops = &mv88e6250_ptp_ops, .phylink_get_caps = mv88e6250_phylink_get_caps, + .set_max_frame_size = mv88e6185_g1_set_max_frame_size, }; static const struct mv88e6xxx_ops mv88e6290_ops = { @@ -5574,6 +5577,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .atu_move_port_mask = 0xf, .multi_chip = true, .ops = &mv88e6095_ops, + .max_frame_size = 1632, }, [MV88E6097] = { @@ -5598,6 +5602,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .multi_chip = true, .edsa_support = MV88E6XXX_EDSA_SUPPORTED, .ops = &mv88e6097_ops, + .max_frame_size = 1632, }, [MV88E6123] = { @@ -5622,6 +5627,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .multi_chip = true, .edsa_support = MV88E6XXX_EDSA_SUPPORTED, .ops = &mv88e6123_ops, + .max_frame_size = 1632, }, [MV88E6131] = { @@ -5692,6 +5698,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .edsa_support = MV88E6XXX_EDSA_SUPPORTED, .ptp_support = true, .ops = &mv88e6161_ops, + .max_frame_size = 1632, }, [MV88E6165] = { @@ -5716,6 +5723,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .multi_chip = true, .ptp_support = true, .ops = &mv88e6165_ops, + .max_frame_size = 1632, }, [MV88E6171] = { @@ -5835,6 +5843,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .multi_chip = true, .edsa_support = MV88E6XXX_EDSA_SUPPORTED, .ops = &mv88e6185_ops, + .max_frame_size = 1632, }, [MV88E6190] = { @@ -5968,6 +5977,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .num_internal_phys = 2, .invalid_port_mask = BIT(2) | BIT(3) | BIT(4), .max_vid = 4095, + .max_frame_size = 2048, .port_base_addr = 0x08, .phy_base_addr = 0x00, .global1_addr = 0x0f, @@ -6015,6 +6025,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = { .num_ports = 7, .num_internal_phys = 5, .max_vid = 4095, + .max_frame_size = 2048, .port_base_addr = 0x08, .phy_base_addr = 0x00, .global1_addr = 0x0f, diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h index e693154cf803..55948ef56cd0 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.h +++ b/drivers/net/dsa/mv88e6xxx/chip.h @@ -132,6 +132,7 @@ struct mv88e6xxx_info { unsigned int num_gpio; unsigned int max_vid; unsigned int max_sid; + unsigned int max_frame_size; unsigned int port_base_addr; unsigned int phy_base_addr; unsigned int global1_addr;