From: Jakub Kicinski <kuba@kernel.org>
To: Michael Dege <michael.dege@renesas.com>
Cc: "Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
"Andrew Lunn" <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
"Paul Barker" <paul@pbarker.dev>,
netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v4 05/13] net: renesas: rswitch: add exception path for packets with unknown dst MAC
Date: Tue, 12 May 2026 18:37:16 -0700 [thread overview]
Message-ID: <20260512183716.482f3f90@kernel.org> (raw)
In-Reply-To: <20260511-rswitch_add_vlans-v4-5-a5a225f8faae@renesas.com>
On Mon, 11 May 2026 10:52:08 +0200 Michael Dege wrote:
> Packets with unknown MAC address cannot be handled by the HW forwarding.
> These need to be forwarded, via an exception path, to the network driver.
>
> Creates a queue for the exeption path. Packets received with unknown
> src/dst address need to be passed to the CPU. The received packet does not
> have the correct source port information, this is derived from the
> descriptor and added to the new queue. The received packet is added to the
> new queue and sent to the CPU for MAC learning. The CPU will broadcast the
> received packet, to all ports. This is how the HW learns the new MAC
> address.
I sent the AI reviews out just in case, main reason I'm dropping this
from pw is the new sparse build warning here:
drivers/net/ethernet/renesas/rswitch_main.c:1015:23: warning: cast to restricted __le64
drivers/net/ethernet/renesas/rswitch_main.c:1015:23: warning: restricted __le64 degrades to integer
drivers/net/ethernet/renesas/rswitch_main.c:1015:23: warning: restricted __le64 degrades to integer
next prev parent reply other threads:[~2026-05-13 1:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 8:52 [net-next PATCH v4 00/13] net: renesas: rswitch: R-Car S4 add VLAN aware switching Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 01/13] net: renesas: rswitch: improve port change mode functions Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 02/13] net: renesas: rswitch: use device instead of net_device Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 12:10 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 03/13] net: renesas: rswitch: fix FWPC2 register access macros Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 04/13] net: renesas: rswitch: add register definitions for vlan support Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 05/13] net: renesas: rswitch: add exception path for packets with unknown dst MAC Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 12:07 ` Michael Dege
2026-05-13 1:37 ` Jakub Kicinski [this message]
2026-05-22 10:47 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 06/13] net: renesas: rswitch: add forwarding rules for gwca Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 07/13] net: renesas: rswitch: make helper functions available to whole driver Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 11:53 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 08/13] net: renesas: rswitch: add basic vlan init to rswitch_fwd_init Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 09/13] net: renesas: rswitch: update port HW init Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 11:51 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 10/13] net: renesas: rswitch: clean up is_rdev rswitch_device checking Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 11:14 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 11/13] net: renesas: rswitch: add passing of rswitch_private into notifiers Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 11:16 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 12/13] net: renesas: rswitch: add handler for FDB notification Michael Dege
2026-05-13 1:35 ` Jakub Kicinski
2026-05-22 11:02 ` Michael Dege
2026-05-11 8:52 ` [PATCH net-next v4 13/13] net: renesas: rswitch: add vlan aware switching Michael Dege
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