kernel/linux.git/drivers/net/dsa/b53, branch v6.18.21

net: dsa: b53: skip multicast entries for fdb_dump()

2026-01-08T09:16:47+00:00

[ Upstream commit d42bce414d1c5c0b536758466a1f63ac358e613c ] port_fdb_dump() is supposed to only add fdb entries, but we iterate over the full ARL table, which also includes multicast entries. So check if the entry is a multicast entry before passing it on to the callback(). Additionally, the port of those entries is a bitmask, not a port number, so any included entries would have even be for the wrong port. Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251217205756.172123-1-jonas.gorski@gmail.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

net: dsa: b53: fix BCM5325/65 ARL entry VIDs

2025-12-18T13:03:30+00:00

[ Upstream commit d39514e6a2d14f57830d649e2bf03b49612c2f73 ] BCM5325/65's ARL entry registers do not contain the VID, only the search result register does. ARL entries have a separate VID entry register for the index into the VLAN table. So make ARL entry accessors use the VID entry registers instead, and move the VLAN ID field definition to the search register definition. Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365") Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251128080625.27181-7-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: dsa: b53: fix BCM5325/65 ARL entry multicast port masks

2025-12-18T13:03:30+00:00

[ Upstream commit 3b08863469aa6028ac7c3120966f4e2f6051cf6b ] We currently use the mask 0xf for writing and reading b53_entry::port, but this is only correct for unicast ARL entries. Multicast ARL entries use a bitmask, and 0xf is not enough space for ports > 3, which includes the CPU port. So extend the mask accordingly to also fit port 4 (bit 4) and MII (bit 5). According to the datasheet the multicast port mask is [60:48], making it 12 bit wide, but bits 60-55 are reserved anyway, and collide with the priority field at [60:59], so I am not sure if this is valid. Therefore leave it at the actual used range, [53:48]. The ARL search result register differs a bit, and there the mask is only [52:48], so only spanning the user ports. The MII port bit is contained in the Search Result Extension register. So create a separate search result parse function that properly handles this. Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365") Reviewed-by: Florian Fainelli Signed-off-by: Jonas Gorski Link: https://patch.msgid.link/20251128080625.27181-6-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: dsa: b53: add support for bcm63xx ARL entry format

2025-12-18T13:03:30+00:00

[ Upstream commit 2b3013ac03028a2364d8779719bb6bfbc0212435 ] The ARL registers of BCM63XX embedded switches are somewhat unique. The normal ARL table access registers have the same format as BCM5389, but the ARL search registers differ: * SRCH_CTL is at the same offset of BCM5389, but 16 bits wide. It does not have more fields, just needs to be accessed by a 16 bit read. * SRCH_RSLT_MACVID and SRCH_RSLT are aligned to 32 bit, and have shifted offsets. * SRCH_RSLT has a different format than the normal ARL data entry register. * There is only one set of ENTRY_N registers, implying a 1 bin layout. So add appropriate ops for bcm63xx and let it use it. Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251107080749.26936-9-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Stable-dep-of: 3b08863469aa ("net: dsa: b53: fix BCM5325/65 ARL entry multicast port masks") Signed-off-by: Sasha Levin

net: dsa: b53: fix CPU port unicast ARL entries for BCM5325/65

2025-12-18T13:03:30+00:00

[ Upstream commit 85132103f700b1340fc17df8a981509d17bf4872 ] On BCM5325 and BCM5365, unicast ARL entries use 8 as the value for the CPU port, so we need to translate it to/from 5 as used for the CPU port at most other places. Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365") Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251128080625.27181-5-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: dsa: b53: use same ARL search result offset for BCM5325/65

2025-12-18T13:03:30+00:00

[ Upstream commit 8e46aacea4264bcb8d4265fb07577afff58ae78d ] BCM5365's search result is at the same offset as BCM5325's search result, and they (mostly) share the same format, so switch BCM5365 to BCM5325's arl ops. Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365") Reviewed-by: Florian Fainelli Tested-by: Álvaro Fernández Rojas Signed-off-by: Jonas Gorski Link: https://patch.msgid.link/20251128080625.27181-4-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: dsa: b53: add support for 5389/5397/5398 ARL entry format

2025-12-18T13:03:30+00:00

[ Upstream commit 300f78e8b6b7be17c2c78afeded75be68acb1aa7 ] BCM5389, BCM5397 and BCM5398 use a different ARL entry format with just a 16 bit fwdentry register, as well as different search control and data offsets. So add appropriate ops for them and switch those chips to use them. Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251107080749.26936-8-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Stable-dep-of: 8e46aacea426 ("net: dsa: b53: use same ARL search result offset for BCM5325/65") Signed-off-by: Sasha Levin

net: dsa: b53: move ARL entry functions into ops struct

2025-12-18T13:03:30+00:00

[ Upstream commit a7e73339ad46ade76d29fb6cc7d7854222608c26 ] Now that the differences in ARL entry formats are neatly contained into functions per chip family, wrap them into an ops struct and add wrapper functions to access them. Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251107080749.26936-7-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Stable-dep-of: 8e46aacea426 ("net: dsa: b53: use same ARL search result offset for BCM5325/65") Signed-off-by: Sasha Levin

net: dsa: b53: split reading search entry into their own functions

2025-12-18T13:03:30+00:00

[ Upstream commit e0c476f325a8c9b961a3d446c24d3c8ecae7d186 ] Split reading search entries into a function for each format. Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251107080749.26936-6-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Stable-dep-of: 8e46aacea426 ("net: dsa: b53: use same ARL search result offset for BCM5325/65") Signed-off-by: Sasha Levin

net: dsa: b53: provide accessors for accessing ARL_SRCH_CTL

2025-12-18T13:03:29+00:00

[ Upstream commit 1716be6db04af53bac9b869f01156a460595cf41 ] In order to more easily support more formats, move accessing ARL_SRCH_CTL into helper functions to contain the differences. Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251107080749.26936-5-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski Stable-dep-of: 8e46aacea426 ("net: dsa: b53: use same ARL search result offset for BCM5325/65") Signed-off-by: Sasha Levin