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[95.239.254.7]) by smtp.googlemail.com with ESMTPSA id l15sm4736146edb.48.2021.04.11.08.03.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Apr 2021 08:03:46 -0700 (PDT) From: Ansuel Smith To: netdev@vger.kernel.org Cc: Ansuel Smith , "David S. Miller" , Jakub Kicinski , Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eric Dumazet , Wei Wang , Cong Wang , Taehee Yoo , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , zhang kai , Weilong Chen , =?utf-8?q?Marek_Beh=C3=BAn?= , Roopa Prabhu , Di Zhu , Francis Laniel , linux-kernel@vger.kernel.org Subject: [PATCH RFC net-next 0/3] Multi-CPU DSA support Date: Sat, 10 Apr 2021 15:34:46 +0200 Message-Id: <20210410133454.4768-1-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, this is a respin of the Marek series in hope that this time we can finally make some progress with dsa supporting multi-cpu port. This implementation is similar to the Marek series but with some tweaks. This adds support for multiple-cpu port but leave the driver the decision of the type of logic to use about assigning a CPU port to the various port. The driver can also provide no preference and the CPU port is decided using a round-robin way. (copying the Marek cover letter) Patch 2 adds a new operation to the net device operations structure. Currently we use the iflink property of a net device to report to which CPU port a given switch port si connected to. The ip link utility from iproute2 reports this as "lan1@eth0". We add a new net device operation, ndo_set_iflink, which can be used to set this property. We call this function from the netlink handlers. Patch 3 implements this new ndo_set_iflink operation for DSA slave device. Thus the userspace can request a change of CPU port of a given port. The mac address is changed accordingly following the CPU port mac address. There are at least 2 driver that would benefit from this and currently now works using half their capabilities. (qca8k and mv88e6xxx) This current series is tested with qca8k. Ansuel Smith (1): net: dsa: allow for multiple CPU ports Marek Behún (2): net: add ndo for setting the iflink property net: dsa: implement ndo_set_netlink for chaning port's CPU port include/linux/netdevice.h | 5 +++ include/net/dsa.h | 7 +++++ net/core/dev.c | 15 +++++++++ net/core/rtnetlink.c | 7 +++++ net/dsa/dsa2.c | 66 ++++++++++++++++++++++++++++----------- net/dsa/slave.c | 31 ++++++++++++++++++ 6 files changed, 112 insertions(+), 19 deletions(-) Signed-off-by: Marek Behún