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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Russell King , linux-kernel@vger.kernel.org Subject: [PATCH net-next v3 3/4] net: dsa: yt921x: Add HSR offloading support Date: Wed, 26 Nov 2025 17:32:36 +0800 Message-ID: <20251126093240.2853294-4-mmyangfl@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251126093240.2853294-1-mmyangfl@gmail.com> References: <20251126093240.2853294-1-mmyangfl@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add offloading for packet duplication supported by the YT921x switches. Signed-off-by: David Yang --- drivers/net/dsa/yt921x.c | 24 ++++++++++++++++++++++++ net/dsa/tag_yt921x.c | 4 ++++ 2 files changed, 28 insertions(+) diff --git a/drivers/net/dsa/yt921x.c b/drivers/net/dsa/yt921x.c index e88b4037ee80..e7b416719b58 100644 --- a/drivers/net/dsa/yt921x.c +++ b/drivers/net/dsa/yt921x.c @@ -1038,6 +1038,27 @@ static int yt921x_dsa_port_max_mtu(struct dsa_switch= *ds, int port) return YT921X_FRAME_SIZE_MAX - ETH_HLEN - ETH_FCS_LEN - YT921X_TAG_LEN; } =20 +static int +yt921x_dsa_port_hsr_leave(struct dsa_switch *ds, int port, + struct net_device *hsr) +{ + return 0; +} + +static int +yt921x_dsa_port_hsr_join(struct dsa_switch *ds, int port, + struct net_device *hsr, struct netlink_ext_ack *extack) +{ + struct dsa_port *dp =3D dsa_to_port(ds, port); + struct net_device *user =3D dp->user; + + /* Nothing special here; we natively support tx packet duplication */ + + user->features |=3D NETIF_F_HW_HSR_DUP; + + return 0; +} + static int yt921x_mirror_del(struct yt921x_priv *priv, int port, bool ingress) { @@ -2880,6 +2901,9 @@ static const struct dsa_switch_ops yt921x_dsa_switch_= ops =3D { /* mtu */ .port_change_mtu =3D yt921x_dsa_port_change_mtu, .port_max_mtu =3D yt921x_dsa_port_max_mtu, + /* hsr */ + .port_hsr_leave =3D yt921x_dsa_port_hsr_leave, + .port_hsr_join =3D yt921x_dsa_port_hsr_join, /* mirror */ .port_mirror_del =3D yt921x_dsa_port_mirror_del, .port_mirror_add =3D yt921x_dsa_port_mirror_add, diff --git a/net/dsa/tag_yt921x.c b/net/dsa/tag_yt921x.c index 995da44f0a2a..0ad83924fda1 100644 --- a/net/dsa/tag_yt921x.c +++ b/net/dsa/tag_yt921x.c @@ -46,6 +46,7 @@ yt921x_tag_xmit(struct sk_buff *skb, struct net_device *n= etdev) { struct dsa_port *dp =3D dsa_user_to_port(netdev); unsigned int port =3D dp->index; + struct dsa_port *partner; __be16 *tag; u16 tx; =20 @@ -59,6 +60,9 @@ yt921x_tag_xmit(struct sk_buff *skb, struct net_device *n= etdev) tag[1] =3D 0; tag[2] =3D 0; tx =3D YT921X_TAG_PORT_EN | YT921X_TAG_TX_PORTn(port); + if (dp->hsr_dev) + dsa_hsr_foreach_port(partner, dp->ds, dp->hsr_dev) + tx |=3D YT921X_TAG_TX_PORTn(partner->index); tag[3] =3D htons(tx); =20 return skb; --=20 2.51.0