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From: DENG Qingfang <dqfext@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Vladimir Oltean <olteanv@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Sean Wang <sean.wang@mediatek.com>,
	Landen Chao <Landen.Chao@mediatek.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	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	[thread overview]
Message-ID: <20210825083832.2425886-2-dqfext@gmail.com> (raw)
In-Reply-To: <20210825083832.2425886-1-dqfext@gmail.com>

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 <dqfext@gmail.com>
---
 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)
-- 
2.25.1


  reply	other threads:[~2021-08-25  8:39 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-25  8:38 [RFC net-next 0/2] DSA slave with " DENG Qingfang
2021-08-25  8:38 ` DENG Qingfang [this message]
2021-08-26  0:01   ` [RFC net-next 1/2] net: dsa: allow taggers to " Vladimir Oltean
2021-08-26 11:28   ` Florian Fainelli
2021-08-25  8:38 ` [RFC net-next 2/2] net: dsa: tag_mtk: handle VLAN tag insertion on TX DENG Qingfang
2021-08-26  0:03   ` Vladimir Oltean
2021-08-26  5:29     ` DENG Qingfang
2021-08-26 11:37       ` Florian Fainelli
2021-08-26 14:13       ` Vladimir Oltean
2021-08-26 15:27         ` DENG Qingfang
2021-08-26  0:00 ` [RFC net-next 0/2] DSA slave with customise netdev features Vladimir Oltean

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