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[PATCH v6 RESEND net-next 5/5] net: enetc: add UDP segmentation offload support

Wei Fang posted 5 patches 1 year ago
There is a newer version of this series
[PATCH v6 RESEND net-next 5/5] net: enetc: add UDP segmentation offload support
Posted by Wei Fang 1 year ago 
Set NETIF_F_GSO_UDP_L4 bit of hw_features and features because i.MX95
enetc and LS1028A driver implements UDP segmentation.

- i.MX95 ENETC supports UDP segmentation via LSO.
- LS1028A ENETC supports UDP segmentation since the commit 3d5b459ba0e3
("net: tso: add UDP segmentation support").

Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
v2: rephrase the commit message
v3: no changes
v4: fix typo in commit message
v5: no changes
v6: no changes
---
 drivers/net/ethernet/freescale/enetc/enetc_pf_common.c | 6 ++++--
 drivers/net/ethernet/freescale/enetc/enetc_vf.c        | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
index 82a67356abe4..76fc3c6fdec1 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
@@ -110,11 +110,13 @@ void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 	ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
 			    NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 			    NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK |
-			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
+			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
+			    NETIF_F_GSO_UDP_L4;
 	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
 			 NETIF_F_HW_VLAN_CTAG_TX |
 			 NETIF_F_HW_VLAN_CTAG_RX |
-			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
+			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
+			 NETIF_F_GSO_UDP_L4;
 	ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
 			      NETIF_F_TSO | NETIF_F_TSO6;
 
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_vf.c b/drivers/net/ethernet/freescale/enetc/enetc_vf.c
index 63d78b2b8670..3768752b6008 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_vf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_vf.c
@@ -145,11 +145,13 @@ static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
 	ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
 			    NETIF_F_HW_VLAN_CTAG_TX |
 			    NETIF_F_HW_VLAN_CTAG_RX |
-			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
+			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
+			    NETIF_F_GSO_UDP_L4;
 	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
 			 NETIF_F_HW_VLAN_CTAG_TX |
 			 NETIF_F_HW_VLAN_CTAG_RX |
-			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
+			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
+			 NETIF_F_GSO_UDP_L4;
 	ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
 			      NETIF_F_TSO | NETIF_F_TSO6;
 
-- 
2.34.1
Re: [PATCH v6 RESEND net-next 5/5] net: enetc: add UDP segmentation offload support
Posted by Ido Schimmel 1 year ago 
On Wed, Dec 04, 2024 at 01:29:32PM +0800, Wei Fang wrote:
> Set NETIF_F_GSO_UDP_L4 bit of hw_features and features because i.MX95
> enetc and LS1028A driver implements UDP segmentation.
> 
> - i.MX95 ENETC supports UDP segmentation via LSO.
> - LS1028A ENETC supports UDP segmentation since the commit 3d5b459ba0e3
> ("net: tso: add UDP segmentation support").
> 
> Signed-off-by: Wei Fang <wei.fang@nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
> v2: rephrase the commit message
> v3: no changes
> v4: fix typo in commit message
> v5: no changes
> v6: no changes
> ---
>  drivers/net/ethernet/freescale/enetc/enetc_pf_common.c | 6 ++++--
>  drivers/net/ethernet/freescale/enetc/enetc_vf.c        | 6 ++++--
>  2 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> index 82a67356abe4..76fc3c6fdec1 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> @@ -110,11 +110,13 @@ void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
>  	ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
>  			    NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
>  			    NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK |
> -			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> +			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> +			    NETIF_F_GSO_UDP_L4;
>  	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
>  			 NETIF_F_HW_VLAN_CTAG_TX |
>  			 NETIF_F_HW_VLAN_CTAG_RX |
> -			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> +			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> +			 NETIF_F_GSO_UDP_L4;
>  	ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
>  			      NETIF_F_TSO | NETIF_F_TSO6;

I didn't see any wording about it in the commit message / cover letter
so I will ask: Any reason not to enable UDP segmentation offload on
upper VLAN devices by setting the feature in 'ndev->vlan_features'?

>  
> diff --git a/drivers/net/ethernet/freescale/enetc/enetc_vf.c b/drivers/net/ethernet/freescale/enetc/enetc_vf.c
> index 63d78b2b8670..3768752b6008 100644
> --- a/drivers/net/ethernet/freescale/enetc/enetc_vf.c
> +++ b/drivers/net/ethernet/freescale/enetc/enetc_vf.c
> @@ -145,11 +145,13 @@ static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
>  	ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
>  			    NETIF_F_HW_VLAN_CTAG_TX |
>  			    NETIF_F_HW_VLAN_CTAG_RX |
> -			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> +			    NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> +			    NETIF_F_GSO_UDP_L4;
>  	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
>  			 NETIF_F_HW_VLAN_CTAG_TX |
>  			 NETIF_F_HW_VLAN_CTAG_RX |
> -			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> +			 NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> +			 NETIF_F_GSO_UDP_L4;
>  	ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
>  			      NETIF_F_TSO | NETIF_F_TSO6;
>  
> -- 
> 2.34.1
> 
>
Re: [PATCH v6 RESEND net-next 5/5] net: enetc: add UDP segmentation offload support
Posted by Eric Dumazet 1 year ago 
On Sun, Dec 8, 2024 at 4:09 PM Ido Schimmel <idosch@idosch.org> wrote:
>
> On Wed, Dec 04, 2024 at 01:29:32PM +0800, Wei Fang wrote:
> > Set NETIF_F_GSO_UDP_L4 bit of hw_features and features because i.MX95
> > enetc and LS1028A driver implements UDP segmentation.
> >
> > - i.MX95 ENETC supports UDP segmentation via LSO.
> > - LS1028A ENETC supports UDP segmentation since the commit 3d5b459ba0e3
> > ("net: tso: add UDP segmentation support").
> >
> > Signed-off-by: Wei Fang <wei.fang@nxp.com>
> > Reviewed-by: Frank Li <Frank.Li@nxp.com>
> > ---
> > v2: rephrase the commit message
> > v3: no changes
> > v4: fix typo in commit message
> > v5: no changes
> > v6: no changes
> > ---
> >  drivers/net/ethernet/freescale/enetc/enetc_pf_common.c | 6 ++++--
> >  drivers/net/ethernet/freescale/enetc/enetc_vf.c        | 6 ++++--
> >  2 files changed, 8 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> > index 82a67356abe4..76fc3c6fdec1 100644
> > --- a/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> > +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf_common.c
> > @@ -110,11 +110,13 @@ void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
> >       ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
> >                           NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
> >                           NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_LOOPBACK |
> > -                         NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > +                         NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> > +                         NETIF_F_GSO_UDP_L4;
> >       ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
> >                        NETIF_F_HW_VLAN_CTAG_TX |
> >                        NETIF_F_HW_VLAN_CTAG_RX |
> > -                      NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
> > +                      NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
> > +                      NETIF_F_GSO_UDP_L4;
> >       ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
> >                             NETIF_F_TSO | NETIF_F_TSO6;
>
> I didn't see any wording about it in the commit message / cover letter
> so I will ask: Any reason not to enable UDP segmentation offload on
> upper VLAN devices by setting the feature in 'ndev->vlan_features'?

Going to back to my commit, it stated that net/core/tso.c was only
dealing with basic stuff.

Adding vlan support would need some changes there, I guess this should
be done if there is enough interest and testing.

    commit 3d5b459ba0e3788ab471e8cb98eee89964a9c5e8    net: tso: add
UDP segmentation support

    Note that like TCP, we do not support additional encapsulations,
    and that checksums must be offloaded to the NIC.

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