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Miller" , Jakub Kicinski , Sean Wang , Landen Chao , Matthias Brugger , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [RFC net-next 1/2] net: dsa: allow taggers to customise netdev features Date: Wed, 25 Aug 2021 16:38:30 +0800 Message-Id: <20210825083832.2425886-2-dqfext@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210825083832.2425886-1-dqfext@gmail.com> References: <20210825083832.2425886-1-dqfext@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210825_013859_070669_D2F63BCC X-CRM114-Status: GOOD ( 12.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allow taggers to add netdev features, such as VLAN offload, to slave devices, which will make it possible for taggers to handle VLAN tags themselves. Signed-off-by: DENG Qingfang Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli --- include/net/dsa.h | 2 ++ net/dsa/slave.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index f9a17145255a..f65442858f71 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -96,6 +96,8 @@ struct dsa_device_ops { * its RX filter. */ bool promisc_on_master; + /* Additional features to be applied to the slave. */ + netdev_features_t features; }; /* This structure defines the control interfaces that are overlayed by the diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 662ff531d4e2..6d6f1aebf1ca 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -1885,7 +1885,8 @@ void dsa_slave_setup_tagger(struct net_device *slave) p->xmit = cpu_dp->tag_ops->xmit; - slave->features = master->vlan_features | NETIF_F_HW_TC; + slave->features = master->vlan_features | cpu_dp->tag_ops->features | + NETIF_F_HW_TC; slave->hw_features |= NETIF_F_HW_TC; slave->features |= NETIF_F_LLTX; if (slave->needed_tailroom)