kernel.git/drivers/net/dsa/microchip, branch linux-6.4.y

net: dsa: microchip: KSZ9477 register regmap alignment to 32 bit boundaries

2023-09-13T07:47:53Z

[ Upstream commit 8d7ae22ae9f8c8a4407f8e993df64440bdbd0cee ] The commit (SHA1: 5c844d57aa7894154e49cf2fc648bfe2f1aefc1c) provided code to apply "Module 6: Certain PHY registers must be written as pairs instead of singly" errata for KSZ9477 as this chip for certain PHY registers (0xN120 to 0xN13F, N=1,2,3,4,5) must be accesses as 32 bit words instead of 16 or 8 bit access. Otherwise, adjacent registers (no matter if reserved or not) are overwritten with 0x0. Without this patch some registers (e.g. 0x113c or 0x1134) required for 32 bit access are out of valid regmap ranges. As a result, following error is observed and KSZ9477 is not properly configured: ksz-switch spi1.0: can't rmw 32bit reg 0x113c: -EIO ksz-switch spi1.0: can't rmw 32bit reg 0x1134: -EIO ksz-switch spi1.0 lan1 (uninitialized): failed to connect to PHY: -EIO ksz-switch spi1.0 lan1 (uninitialized): error -5 setting up PHY for tree 0, switch 0, port 0 The solution is to modify regmap_reg_range to allow accesses with 4 bytes boundaries. Signed-off-by: Lukasz Majewski Reviewed-by: Simon Horman Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

net: dsa: microchip: correct KSZ8795 static MAC table access

2023-07-27T06:56:57Z

[ Upstream commit 4bdf79d686b49ac49373b36466acfb93972c7d7c ] The KSZ8795 driver code was modified to use on KSZ8863/73, which has different register definitions. Some of the new KSZ8795 register information are wrong compared to previous code. KSZ8795 also behaves differently in that the STATIC_MAC_TABLE_USE_FID and STATIC_MAC_TABLE_FID bits are off by 1 when doing MAC table reading than writing. To compensate that a special code was added to shift the register value by 1 before applying those bits. This is wrong when the code is running on KSZ8863, so this special code is only executed when KSZ8795 is detected. Fixes: 4b20a07e103f ("net: dsa: microchip: ksz8795: add support for ksz88xx chips") Signed-off-by: Tristram Ha Reviewed-by: Horatiu Vultur Reviewed-by: Simon Horman Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-04-20T23:29:51Z

Adjacent changes: net/mptcp/protocol.h 63740448a32e ("mptcp: fix accept vs worker race") 2a6a870e44dd ("mptcp: stops worker on unaccepted sockets at listener close") ddb1a072f858 ("mptcp: move first subflow allocation at mpc access time") Signed-off-by: Jakub Kicinski

net: dsa: microchip: ksz8795: Correctly handle huge frame configuration

2023-04-19T18:28:49Z

Because of the logic in place, SW_HUGE_PACKET can never be set. (If the first condition is true, then the 2nd one is also true, but is not executed) Change the logic and update each bit individually. Fixes: 29d1e85f45e0 ("net: dsa: microchip: ksz8: add MTU configuration support") Signed-off-by: Christophe JAILLET Reviewed-by: Oleksij Rempel Reviewed-by: Simon Horman Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/43107d9e8b5b8b05f0cbd4e1f47a2bb88c8747b2.1681755535.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski

net: dsa: microchip: Utilize error values in ksz8_w_sta_mac_table()

2023-04-06T09:34:45Z

To handle potential read/write operation failures, update ksz8_w_sta_mac_table() to make use of the return values provided by read/write functions. Signed-off-by: Oleksij Rempel Acked-by: Arun Ramadoss Signed-off-by: Paolo Abeni

net: dsa: microchip: Make ksz8_w_sta_mac_table() static

2023-04-06T09:34:45Z

Since ksz8_w_sta_mac_table() is only used within ksz8795.c, make it static to limit its scope. Signed-off-by: Oleksij Rempel Acked-by: Arun Ramadoss Signed-off-by: Paolo Abeni

net: dsa: microchip: ksz8_r_sta_mac_table(): Utilize error values from read/write functions

2023-04-06T09:34:45Z

Take advantage of the return values provided by read/write functions in ksz8_r_sta_mac_table() to handle cases where read/write operations may fail. Signed-off-by: Oleksij Rempel Acked-by: Arun Ramadoss Signed-off-by: Paolo Abeni

net: dsa: microchip: ksz8_r_sta_mac_table(): Avoid using error code for empty entries

2023-04-06T09:34:45Z

Prepare for the next patch by ensuring that ksz8_r_sta_mac_table() does not use error codes for empty entries. This change will enable better handling of read/write errors in the upcoming patch. Signed-off-by: Oleksij Rempel Reviewed-by: Vladimir Oltean Signed-off-by: Paolo Abeni

net: dsa: microchip: ksz8: Make ksz8_r_sta_mac_table() static

2023-04-06T09:34:45Z

As ksz8_r_sta_mac_table() is only used within ksz8795.c, there is no need to export it. Make the function static for better encapsulation. Signed-off-by: Oleksij Rempel Reviewed-by: Vladimir Oltean Acked-by: Arun Ramadoss Signed-off-by: Paolo Abeni

net: dsa: microchip: ksz8: Implement add/del_fdb and use static MAC table operations

2023-04-06T09:34:45Z

Add support for add/del_fdb operations and utilize the refactored static MAC table code. This resolves kernel warnings caused by the lack of fdb add function support in the current driver. Signed-off-by: Oleksij Rempel Signed-off-by: Paolo Abeni