[PATCH net-next v1 00/10] Convert drivers to return XFRM configuration errors through extack

[PATCH net-next v1 00/10] Convert drivers to return XFRM configuration errors through extack

[Leon Romanovsky]

Changelog
v1:
 * Fixed rebase errors in mlx5 and cxgb4 drivers
 * Fixed previously existed typo in nfp driver
 * Added Simon's ROB
 * Removed my double SOB tags
v0: https://lore.kernel.org/all/cover.1674481435.git.leon@kernel.org

---------------------------------------------------------------------------

Hi,

This series continues effort started by Sabrina to return XFRM configuration
errors through extack. It allows for user space software stack easily present
driver failure reasons to users.

As a note, Intel drivers have a path where extack is equal to NULL, and error
prints won't be available in current patchset. If it is needed, it can be
changed by adding special to Intel macro to print to dmesg in case of
extack == NULL.

Thanks

Leon Romanovsky (10):
  xfrm: extend add policy callback to set failure reason
  net/mlx5e: Fill IPsec policy validation failure reason
  xfrm: extend add state callback to set failure reason
  net/mlx5e: Fill IPsec state validation failure reason
  netdevsim: Fill IPsec state validation failure reason
  nfp: fill IPsec state validation failure reason
  ixgbevf: fill IPsec state validation failure reason
  ixgbe: fill IPsec state validation failure reason
  bonding: fill IPsec state validation failure reason
  cxgb4: fill IPsec state validation failure reason

 Documentation/networking/xfrm_device.rst      |   4 +-
 drivers/net/bonding/bond_main.c               |  10 +-
 .../net/ethernet/chelsio/cxgb4/cxgb4_main.c   |   8 +-
 .../inline_crypto/ch_ipsec/chcr_ipsec.c       |  34 +++---
 .../net/ethernet/intel/ixgbe/ixgbe_ipsec.c    |  27 ++---
 drivers/net/ethernet/intel/ixgbevf/ipsec.c    |  21 ++--
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 103 ++++++++----------
 .../net/ethernet/netronome/nfp/crypto/ipsec.c |  41 +++----
 drivers/net/netdevsim/ipsec.c                 |  14 +--
 include/linux/netdevice.h                     |   4 +-
 net/xfrm/xfrm_device.c                        |   9 +-
 net/xfrm/xfrm_state.c                         |   2 +-
 12 files changed, 137 insertions(+), 140 deletions(-)

-- 
2.39.1

[PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Almost all validation logic is in the drivers, but they are
missing reliable way to convey failure reason to userspace
applications.

Let's use extack to return this information to users.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 Documentation/networking/xfrm_device.rst                 | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c | 3 ++-
 include/linux/netdevice.h                                | 2 +-
 net/xfrm/xfrm_device.c                                   | 3 +--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Documentation/networking/xfrm_device.rst b/Documentation/networking/xfrm_device.rst
index c43ace79e320..b9c53e626982 100644
--- a/Documentation/networking/xfrm_device.rst
+++ b/Documentation/networking/xfrm_device.rst
@@ -73,7 +73,7 @@ Callbacks to implement
 
         /* Solely packet offload callbacks */
 	void    (*xdo_dev_state_update_curlft) (struct xfrm_state *x);
-	int	(*xdo_dev_policy_add) (struct xfrm_policy *x);
+	int	(*xdo_dev_policy_add) (struct xfrm_policy *x, struct netlink_ext_ack *extack);
 	void	(*xdo_dev_policy_delete) (struct xfrm_policy *x);
 	void	(*xdo_dev_policy_free) (struct xfrm_policy *x);
   };
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index bb9023957f74..83e0f874484e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -550,7 +550,8 @@ mlx5e_ipsec_build_accel_pol_attrs(struct mlx5e_ipsec_pol_entry *pol_entry,
 	attrs->reqid = x->xfrm_vec[0].reqid;
 }
 
-static int mlx5e_xfrm_add_policy(struct xfrm_policy *x)
+static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
+				 struct netlink_ext_ack *extack)
 {
 	struct net_device *netdev = x->xdo.real_dev;
 	struct mlx5e_ipsec_pol_entry *pol_entry;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index aad12a179e54..7c43b9fb9aae 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1042,7 +1042,7 @@ struct xfrmdev_ops {
 				       struct xfrm_state *x);
 	void	(*xdo_dev_state_advance_esn) (struct xfrm_state *x);
 	void	(*xdo_dev_state_update_curlft) (struct xfrm_state *x);
-	int	(*xdo_dev_policy_add) (struct xfrm_policy *x);
+	int	(*xdo_dev_policy_add) (struct xfrm_policy *x, struct netlink_ext_ack *extack);
 	void	(*xdo_dev_policy_delete) (struct xfrm_policy *x);
 	void	(*xdo_dev_policy_free) (struct xfrm_policy *x);
 };
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 4aff76c6f12e..2cec637a4a9c 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -383,14 +383,13 @@ int xfrm_dev_policy_add(struct net *net, struct xfrm_policy *xp,
 		return -EINVAL;
 	}
 
-	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
+	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
 	if (err) {
 		xdo->dev = NULL;
 		xdo->real_dev = NULL;
 		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
 		xdo->dir = 0;
 		netdev_put(dev, &xdo->dev_tracker);
-		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
 		return err;
 	}
 
-- 
2.39.1

Re: [PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Jakub Kicinski]

On Tue, 24 Jan 2023 13:54:57 +0200 Leon Romanovsky wrote:
> -	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
> +	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
>  	if (err) {
>  		xdo->dev = NULL;
>  		xdo->real_dev = NULL;
>  		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
>  		xdo->dir = 0;
>  		netdev_put(dev, &xdo->dev_tracker);
> -		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");

In a handful of places we do:

if (!extack->msg)
	NL_SET_ERR_MSG(extack, "Device failed to offload this policy");

in case the device did not provide the extack.
Dunno if it's worth doing here.

Re: [PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Leon Romanovsky]

On Wed, Jan 25, 2023 at 11:02:26AM -0800, Jakub Kicinski wrote:
> On Tue, 24 Jan 2023 13:54:57 +0200 Leon Romanovsky wrote:
> > -	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
> > +	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
> >  	if (err) {
> >  		xdo->dev = NULL;
> >  		xdo->real_dev = NULL;
> >  		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
> >  		xdo->dir = 0;
> >  		netdev_put(dev, &xdo->dev_tracker);
> > -		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> 
> In a handful of places we do:
> 
> if (!extack->msg)
> 	NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> 
> in case the device did not provide the extack.
> Dunno if it's worth doing here.

Honestly, I followed devlink.c which didn't do that, but looked again
and found that devlink can potentially overwrite messages :)

For example in this case:
    997         err = ops->port_fn_state_get(port, &state, &opstate, extack);
    998         if (err) {
    999                 if (err == -EOPNOTSUPP)
   1000                         return 0;
   1001                 return err;
   1002         }
   1003         if (!devlink_port_fn_state_valid(state)) {
   1004                 WARN_ON_ONCE(1);
   1005                 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
   1006                 return -EINVAL;
   1007         }


So what do you think about the following change, so we can leave
NL_SET_ERR_MSG_MOD() in devlink and xfrm intact? 

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 38f6334f408c..d6f3a958e30b 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -101,7 +101,7 @@ struct netlink_ext_ack {
                                                        \
        do_trace_netlink_extack(__msg);                 \
                                                        \
-       if (__extack)                                   \
+       if (__extack && !__extack->msg)                 \
                __extack->_msg = __msg;                 \
 } while (0)

@@ -111,7 +111,7 @@ struct netlink_ext_ack {
 #define NL_SET_ERR_MSG_FMT(extack, fmt, args...) do {                         \
        struct netlink_ext_ack *__extack = (extack);                           \
                                                                               \
-       if (!__extack)                                                         \
+       if (!__extack || __extack->msg)                                        \
                break;                                                         \
        if (snprintf(__extack->_msg_buf, NETLINK_MAX_FMTMSG_LEN,               \
                     "%s" fmt "%s", "", ##args, "") >=                         \

Re: [PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Paolo Abeni]

On Thu, 2023-01-26 at 09:28 +0200, Leon Romanovsky wrote:
> On Wed, Jan 25, 2023 at 11:02:26AM -0800, Jakub Kicinski wrote:
> > On Tue, 24 Jan 2023 13:54:57 +0200 Leon Romanovsky wrote:
> > > -	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
> > > +	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
> > >  	if (err) {
> > >  		xdo->dev = NULL;
> > >  		xdo->real_dev = NULL;
> > >  		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
> > >  		xdo->dir = 0;
> > >  		netdev_put(dev, &xdo->dev_tracker);
> > > -		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > 
> > In a handful of places we do:
> > 
> > if (!extack->msg)
> > 	NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > 
> > in case the device did not provide the extack.
> > Dunno if it's worth doing here.
> 
> Honestly, I followed devlink.c which didn't do that, but looked again
> and found that devlink can potentially overwrite messages :)
> 
> For example in this case:
>     997         err = ops->port_fn_state_get(port, &state, &opstate, extack);
>     998         if (err) {
>     999                 if (err == -EOPNOTSUPP)
>    1000                         return 0;
>    1001                 return err;
>    1002         }
>    1003         if (!devlink_port_fn_state_valid(state)) {
>    1004                 WARN_ON_ONCE(1);
>    1005                 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
>    1006                 return -EINVAL;
>    1007         }
> 
> 
> So what do you think about the following change, so we can leave
> NL_SET_ERR_MSG_MOD() in devlink and xfrm intact? 
> 
> diff --git a/include/linux/netlink.h b/include/linux/netlink.h
> index 38f6334f408c..d6f3a958e30b 100644
> --- a/include/linux/netlink.h
> +++ b/include/linux/netlink.h
> @@ -101,7 +101,7 @@ struct netlink_ext_ack {
>                                                         \
>         do_trace_netlink_extack(__msg);                 \
>                                                         \
> -       if (__extack)                                   \
> +       if (__extack && !__extack->msg)                 \
>                 __extack->_msg = __msg;                 \
>  } while (0)
> 
> @@ -111,7 +111,7 @@ struct netlink_ext_ack {
>  #define NL_SET_ERR_MSG_FMT(extack, fmt, args...) do {                         \
>         struct netlink_ext_ack *__extack = (extack);                           \
>                                                                                \
> -       if (!__extack)                                                         \
> +       if (!__extack || __extack->msg)                                        \
>                 break;                                                         \
>         if (snprintf(__extack->_msg_buf, NETLINK_MAX_FMTMSG_LEN,               \
>                      "%s" fmt "%s", "", ##args, "") >=                         \
> 

I think it makes sense. With the above patch 3/10 should be updated to
preserve the 'catch-all' error message, I guess.

Let's see what Jakub thinks ;)

Cheers,

Paolo

Re: [PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Leon Romanovsky]

On Thu, Jan 26, 2023 at 10:45:50AM +0100, Paolo Abeni wrote:
> On Thu, 2023-01-26 at 09:28 +0200, Leon Romanovsky wrote:
> > On Wed, Jan 25, 2023 at 11:02:26AM -0800, Jakub Kicinski wrote:
> > > On Tue, 24 Jan 2023 13:54:57 +0200 Leon Romanovsky wrote:
> > > > -	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
> > > > +	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
> > > >  	if (err) {
> > > >  		xdo->dev = NULL;
> > > >  		xdo->real_dev = NULL;
> > > >  		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
> > > >  		xdo->dir = 0;
> > > >  		netdev_put(dev, &xdo->dev_tracker);
> > > > -		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > > 
> > > In a handful of places we do:
> > > 
> > > if (!extack->msg)
> > > 	NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > > 
> > > in case the device did not provide the extack.
> > > Dunno if it's worth doing here.
> > 
> > Honestly, I followed devlink.c which didn't do that, but looked again
> > and found that devlink can potentially overwrite messages :)
> > 
> > For example in this case:
> >     997         err = ops->port_fn_state_get(port, &state, &opstate, extack);
> >     998         if (err) {
> >     999                 if (err == -EOPNOTSUPP)
> >    1000                         return 0;
> >    1001                 return err;
> >    1002         }
> >    1003         if (!devlink_port_fn_state_valid(state)) {
> >    1004                 WARN_ON_ONCE(1);
> >    1005                 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
> >    1006                 return -EINVAL;
> >    1007         }
> > 
> > 
> > So what do you think about the following change, so we can leave
> > NL_SET_ERR_MSG_MOD() in devlink and xfrm intact? 
> > 
> > diff --git a/include/linux/netlink.h b/include/linux/netlink.h
> > index 38f6334f408c..d6f3a958e30b 100644
> > --- a/include/linux/netlink.h
> > +++ b/include/linux/netlink.h
> > @@ -101,7 +101,7 @@ struct netlink_ext_ack {
> >                                                         \
> >         do_trace_netlink_extack(__msg);                 \
> >                                                         \
> > -       if (__extack)                                   \
> > +       if (__extack && !__extack->msg)                 \
> >                 __extack->_msg = __msg;                 \
> >  } while (0)
> > 
> > @@ -111,7 +111,7 @@ struct netlink_ext_ack {
> >  #define NL_SET_ERR_MSG_FMT(extack, fmt, args...) do {                         \
> >         struct netlink_ext_ack *__extack = (extack);                           \
> >                                                                                \
> > -       if (!__extack)                                                         \
> > +       if (!__extack || __extack->msg)                                        \
> >                 break;                                                         \
> >         if (snprintf(__extack->_msg_buf, NETLINK_MAX_FMTMSG_LEN,               \
> >                      "%s" fmt "%s", "", ##args, "") >=                         \
> > 
> 
> I think it makes sense. With the above patch 3/10 should be updated to
> preserve the 'catch-all' error message, I guess.

Great, thanks

> 
> Let's see what Jakub thinks ;)
> 
> Cheers,
> 
> Paolo
> 

Re: [PATCH net-next v1 01/10] xfrm: extend add policy callback to set failure reason

[Leon Romanovsky]

On Thu, Jan 26, 2023 at 12:42:08PM +0200, Leon Romanovsky wrote:
> On Thu, Jan 26, 2023 at 10:45:50AM +0100, Paolo Abeni wrote:
> > On Thu, 2023-01-26 at 09:28 +0200, Leon Romanovsky wrote:
> > > On Wed, Jan 25, 2023 at 11:02:26AM -0800, Jakub Kicinski wrote:
> > > > On Tue, 24 Jan 2023 13:54:57 +0200 Leon Romanovsky wrote:
> > > > > -	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp);
> > > > > +	err = dev->xfrmdev_ops->xdo_dev_policy_add(xp, extack);
> > > > >  	if (err) {
> > > > >  		xdo->dev = NULL;
> > > > >  		xdo->real_dev = NULL;
> > > > >  		xdo->type = XFRM_DEV_OFFLOAD_UNSPECIFIED;
> > > > >  		xdo->dir = 0;
> > > > >  		netdev_put(dev, &xdo->dev_tracker);
> > > > > -		NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > > > 
> > > > In a handful of places we do:
> > > > 
> > > > if (!extack->msg)
> > > > 	NL_SET_ERR_MSG(extack, "Device failed to offload this policy");
> > > > 
> > > > in case the device did not provide the extack.
> > > > Dunno if it's worth doing here.
> > > 
> > > Honestly, I followed devlink.c which didn't do that, but looked again
> > > and found that devlink can potentially overwrite messages :)
> > > 
> > > For example in this case:
> > >     997         err = ops->port_fn_state_get(port, &state, &opstate, extack);
> > >     998         if (err) {
> > >     999                 if (err == -EOPNOTSUPP)
> > >    1000                         return 0;
> > >    1001                 return err;
> > >    1002         }
> > >    1003         if (!devlink_port_fn_state_valid(state)) {
> > >    1004                 WARN_ON_ONCE(1);
> > >    1005                 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
> > >    1006                 return -EINVAL;
> > >    1007         }
> > > 
> > > 
> > > So what do you think about the following change, so we can leave
> > > NL_SET_ERR_MSG_MOD() in devlink and xfrm intact? 
> > > 
> > > diff --git a/include/linux/netlink.h b/include/linux/netlink.h
> > > index 38f6334f408c..d6f3a958e30b 100644
> > > --- a/include/linux/netlink.h
> > > +++ b/include/linux/netlink.h
> > > @@ -101,7 +101,7 @@ struct netlink_ext_ack {
> > >                                                         \
> > >         do_trace_netlink_extack(__msg);                 \
> > >                                                         \
> > > -       if (__extack)                                   \
> > > +       if (__extack && !__extack->msg)                 \
> > >                 __extack->_msg = __msg;                 \
> > >  } while (0)
> > > 
> > > @@ -111,7 +111,7 @@ struct netlink_ext_ack {
> > >  #define NL_SET_ERR_MSG_FMT(extack, fmt, args...) do {                         \
> > >         struct netlink_ext_ack *__extack = (extack);                           \
> > >                                                                                \
> > > -       if (!__extack)                                                         \
> > > +       if (!__extack || __extack->msg)                                        \
> > >                 break;                                                         \
> > >         if (snprintf(__extack->_msg_buf, NETLINK_MAX_FMTMSG_LEN,               \
> > >                      "%s" fmt "%s", "", ##args, "") >=                         \
> > > 
> > 
> > I think it makes sense. With the above patch 3/10 should be updated to
> > preserve the 'catch-all' error message, I guess.
> 
> Great, thanks
> 
> > 
> > Let's see what Jakub thinks ;)

https://lore.kernel.org/netdev/2919eb55e2e9b92265a3ba600afc8137a901ae5f.1674760340.git.leon@kernel.org/T/#u

> > 
> > Cheers,
> > 
> > Paolo
> > 

[PATCH net-next v1 02/10] net/mlx5e: Fill IPsec policy validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 22 ++++++++++---------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 83e0f874484e..3236c3b43149 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -497,34 +497,33 @@ static void mlx5e_xfrm_update_curlft(struct xfrm_state *x)
 	mlx5e_ipsec_aso_update_curlft(sa_entry, &x->curlft.packets);
 }
 
-static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x)
+static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x,
+				      struct netlink_ext_ack *extack)
 {
-	struct net_device *netdev = x->xdo.real_dev;
-
 	if (x->type != XFRM_POLICY_TYPE_MAIN) {
-		netdev_info(netdev, "Cannot offload non-main policy types\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload non-main policy types");
 		return -EINVAL;
 	}
 
 	/* Please pay attention that we support only one template */
 	if (x->xfrm_nr > 1) {
-		netdev_info(netdev, "Cannot offload more than one template\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload more than one template");
 		return -EINVAL;
 	}
 
 	if (x->xdo.dir != XFRM_DEV_OFFLOAD_IN &&
 	    x->xdo.dir != XFRM_DEV_OFFLOAD_OUT) {
-		netdev_info(netdev, "Cannot offload forward policy\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload forward policy");
 		return -EINVAL;
 	}
 
 	if (!x->xfrm_vec[0].reqid) {
-		netdev_info(netdev, "Cannot offload policy without reqid\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload policy without reqid");
 		return -EINVAL;
 	}
 
 	if (x->xdo.type != XFRM_DEV_OFFLOAD_PACKET) {
-		netdev_info(netdev, "Unsupported xfrm offload type\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported xfrm offload type");
 		return -EINVAL;
 	}
 
@@ -559,10 +558,12 @@ static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
 	int err;
 
 	priv = netdev_priv(netdev);
-	if (!priv->ipsec)
+	if (!priv->ipsec) {
+		NL_SET_ERR_MSG_MOD(extack, "Device doesn't support IPsec packet offload");
 		return -EOPNOTSUPP;
+	}
 
-	err = mlx5e_xfrm_validate_policy(x);
+	err = mlx5e_xfrm_validate_policy(x, extack);
 	if (err)
 		return err;
 
@@ -583,6 +584,7 @@ static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
 
 err_fs:
 	kfree(pol_entry);
+	NL_SET_ERR_MSG_MOD(extack, "Device failed to offload this policy");
 	return err;
 }
 
-- 
2.39.1

[PATCH net-next v1 03/10] xfrm: extend add state callback to set failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Almost all validation logic is in the drivers, but they are
missing reliable way to convey failure reason to userspace
applications.

Let's use extack to return this information to users.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 Documentation/networking/xfrm_device.rst                  | 2 +-
 drivers/net/bonding/bond_main.c                           | 8 +++++---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c           | 5 +++--
 .../ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c  | 6 ++++--
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c            | 6 ++++--
 drivers/net/ethernet/intel/ixgbevf/ipsec.c                | 4 +++-
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c  | 3 ++-
 drivers/net/ethernet/netronome/nfp/crypto/ipsec.c         | 3 ++-
 drivers/net/netdevsim/ipsec.c                             | 3 ++-
 include/linux/netdevice.h                                 | 2 +-
 net/xfrm/xfrm_device.c                                    | 6 ++----
 net/xfrm/xfrm_state.c                                     | 2 +-
 12 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/Documentation/networking/xfrm_device.rst b/Documentation/networking/xfrm_device.rst
index b9c53e626982..83abdfef4ec3 100644
--- a/Documentation/networking/xfrm_device.rst
+++ b/Documentation/networking/xfrm_device.rst
@@ -64,7 +64,7 @@ Callbacks to implement
   /* from include/linux/netdevice.h */
   struct xfrmdev_ops {
         /* Crypto and Packet offload callbacks */
-	int	(*xdo_dev_state_add) (struct xfrm_state *x);
+	int	(*xdo_dev_state_add) (struct xfrm_state *x, struct netlink_ext_ack *extack);
 	void	(*xdo_dev_state_delete) (struct xfrm_state *x);
 	void	(*xdo_dev_state_free) (struct xfrm_state *x);
 	bool	(*xdo_dev_offload_ok) (struct sk_buff *skb,
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 0363ce597661..686b2a6fd674 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -419,8 +419,10 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev,
 /**
  * bond_ipsec_add_sa - program device with a security association
  * @xs: pointer to transformer state struct
+ * @extack: extack point to fill failure reason
  **/
-static int bond_ipsec_add_sa(struct xfrm_state *xs)
+static int bond_ipsec_add_sa(struct xfrm_state *xs,
+			     struct netlink_ext_ack *extack)
 {
 	struct net_device *bond_dev = xs->xso.dev;
 	struct bond_ipsec *ipsec;
@@ -454,7 +456,7 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs)
 	}
 	xs->xso.real_dev = slave->dev;
 
-	err = slave->dev->xfrmdev_ops->xdo_dev_state_add(xs);
+	err = slave->dev->xfrmdev_ops->xdo_dev_state_add(xs, extack);
 	if (!err) {
 		ipsec->xs = xs;
 		INIT_LIST_HEAD(&ipsec->list);
@@ -494,7 +496,7 @@ static void bond_ipsec_add_sa_all(struct bonding *bond)
 	spin_lock_bh(&bond->ipsec_lock);
 	list_for_each_entry(ipsec, &bond->ipsec_list, list) {
 		ipsec->xs->xso.real_dev = slave->dev;
-		if (slave->dev->xfrmdev_ops->xdo_dev_state_add(ipsec->xs)) {
+		if (slave->dev->xfrmdev_ops->xdo_dev_state_add(ipsec->xs, NULL)) {
 			slave_warn(bond_dev, slave->dev, "%s: failed to add SA\n", __func__);
 			ipsec->xs->xso.real_dev = NULL;
 		}
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 9cbce1faab26..6c0a41f3ae44 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -6490,7 +6490,8 @@ static const struct tlsdev_ops cxgb4_ktls_ops = {
 
 #if IS_ENABLED(CONFIG_CHELSIO_IPSEC_INLINE)
 
-static int cxgb4_xfrm_add_state(struct xfrm_state *x)
+static int cxgb4_xfrm_add_state(struct xfrm_state *x,
+				struct netlink_ext_ack *extack)
 {
 	struct adapter *adap = netdev2adap(x->xso.dev);
 	int ret;
@@ -6504,7 +6505,7 @@ static int cxgb4_xfrm_add_state(struct xfrm_state *x)
 	if (ret)
 		goto out_unlock;
 
-	ret = adap->uld[CXGB4_ULD_IPSEC].xfrmdev_ops->xdo_dev_state_add(x);
+	ret = adap->uld[CXGB4_ULD_IPSEC].xfrmdev_ops->xdo_dev_state_add(x, extack);
 
 out_unlock:
 	mutex_unlock(&uld_mutex);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
index ca21794281d6..ac2ea6206af1 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
@@ -80,7 +80,8 @@ static void *ch_ipsec_uld_add(const struct cxgb4_lld_info *infop);
 static void ch_ipsec_advance_esn_state(struct xfrm_state *x);
 static void ch_ipsec_xfrm_free_state(struct xfrm_state *x);
 static void ch_ipsec_xfrm_del_state(struct xfrm_state *x);
-static int ch_ipsec_xfrm_add_state(struct xfrm_state *x);
+static int ch_ipsec_xfrm_add_state(struct xfrm_state *x,
+				   struct netlink_ext_ack *extack);
 
 static const struct xfrmdev_ops ch_ipsec_xfrmdev_ops = {
 	.xdo_dev_state_add      = ch_ipsec_xfrm_add_state,
@@ -226,7 +227,8 @@ static int ch_ipsec_setkey(struct xfrm_state *x,
  * returns 0 on success, negative error if failed to send message to FPGA
  * positive error if FPGA returned a bad response
  */
-static int ch_ipsec_xfrm_add_state(struct xfrm_state *x)
+static int ch_ipsec_xfrm_add_state(struct xfrm_state *x,
+				   struct netlink_ext_ack *extack)
 {
 	struct ipsec_sa_entry *sa_entry;
 	int res = 0;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 53a969e34883..07c37dc619e8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -557,8 +557,10 @@ static int ixgbe_ipsec_check_mgmt_ip(struct xfrm_state *xs)
 /**
  * ixgbe_ipsec_add_sa - program device with a security association
  * @xs: pointer to transformer state struct
+ * @extack: extack point to fill failure reason
  **/
-static int ixgbe_ipsec_add_sa(struct xfrm_state *xs)
+static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
+			      struct netlink_ext_ack *extack)
 {
 	struct net_device *dev = xs->xso.real_dev;
 	struct ixgbe_adapter *adapter = netdev_priv(dev);
@@ -950,7 +952,7 @@ int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
 	memcpy(xs->aead->alg_name, aes_gcm_name, sizeof(aes_gcm_name));
 
 	/* set up the HW offload */
-	err = ixgbe_ipsec_add_sa(xs);
+	err = ixgbe_ipsec_add_sa(xs, NULL);
 	if (err)
 		goto err_aead;
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ipsec.c b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
index c1cf540d162a..752b9df4fb51 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
@@ -257,8 +257,10 @@ static int ixgbevf_ipsec_parse_proto_keys(struct xfrm_state *xs,
 /**
  * ixgbevf_ipsec_add_sa - program device with a security association
  * @xs: pointer to transformer state struct
+ * @extack: extack point to fill failure reason
  **/
-static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs)
+static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
+				struct netlink_ext_ack *extack)
 {
 	struct net_device *dev = xs->xso.real_dev;
 	struct ixgbevf_adapter *adapter;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 3236c3b43149..a889df77dd2d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -298,7 +298,8 @@ static void _update_xfrm_state(struct work_struct *work)
 	mlx5_accel_esp_modify_xfrm(sa_entry, &modify_work->attrs);
 }
 
-static int mlx5e_xfrm_add_state(struct xfrm_state *x)
+static int mlx5e_xfrm_add_state(struct xfrm_state *x,
+				struct netlink_ext_ack *extack)
 {
 	struct mlx5e_ipsec_sa_entry *sa_entry = NULL;
 	struct net_device *netdev = x->xso.real_dev;
diff --git a/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
index 4632268695cb..41b98f2b7402 100644
--- a/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
+++ b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
@@ -260,7 +260,8 @@ static void set_sha2_512hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
 	}
 }
 
-static int nfp_net_xfrm_add_state(struct xfrm_state *x)
+static int nfp_net_xfrm_add_state(struct xfrm_state *x,
+				  struct netlink_ext_ack *extack)
 {
 	struct net_device *netdev = x->xso.dev;
 	struct nfp_ipsec_cfg_mssg msg = {};
diff --git a/drivers/net/netdevsim/ipsec.c b/drivers/net/netdevsim/ipsec.c
index b93baf5c8bee..84a02d69abad 100644
--- a/drivers/net/netdevsim/ipsec.c
+++ b/drivers/net/netdevsim/ipsec.c
@@ -125,7 +125,8 @@ static int nsim_ipsec_parse_proto_keys(struct xfrm_state *xs,
 	return 0;
 }
 
-static int nsim_ipsec_add_sa(struct xfrm_state *xs)
+static int nsim_ipsec_add_sa(struct xfrm_state *xs,
+			     struct netlink_ext_ack *extack)
 {
 	struct nsim_ipsec *ipsec;
 	struct net_device *dev;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7c43b9fb9aae..63b77cbc947e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1035,7 +1035,7 @@ struct netdev_bpf {
 
 #ifdef CONFIG_XFRM_OFFLOAD
 struct xfrmdev_ops {
-	int	(*xdo_dev_state_add) (struct xfrm_state *x);
+	int	(*xdo_dev_state_add) (struct xfrm_state *x, struct netlink_ext_ack *extack);
 	void	(*xdo_dev_state_delete) (struct xfrm_state *x);
 	void	(*xdo_dev_state_free) (struct xfrm_state *x);
 	bool	(*xdo_dev_offload_ok) (struct sk_buff *skb,
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 2cec637a4a9c..562b9d951598 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -309,7 +309,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
 	else
 		xso->type = XFRM_DEV_OFFLOAD_CRYPTO;
 
-	err = dev->xfrmdev_ops->xdo_dev_state_add(x);
+	err = dev->xfrmdev_ops->xdo_dev_state_add(x, extack);
 	if (err) {
 		xso->dev = NULL;
 		xso->dir = 0;
@@ -325,10 +325,8 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
 		 * authors to do not return -EOPNOTSUPP in packet offload mode.
 		 */
 		WARN_ON(err == -EOPNOTSUPP && is_packet_offload);
-		if (err != -EOPNOTSUPP || is_packet_offload) {
-			NL_SET_ERR_MSG(extack, "Device failed to offload this state");
+		if (err != -EOPNOTSUPP || is_packet_offload)
 			return err;
-		}
 	}
 
 	return 0;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 89c731f4f0c7..59fffa02d1cc 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1274,7 +1274,7 @@ xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr,
 			xso->real_dev = xdo->real_dev;
 			netdev_tracker_alloc(xso->dev, &xso->dev_tracker,
 					     GFP_ATOMIC);
-			error = xso->dev->xfrmdev_ops->xdo_dev_state_add(x);
+			error = xso->dev->xfrmdev_ops->xdo_dev_state_add(x, NULL);
 			if (error) {
 				xso->dir = 0;
 				netdev_put(xso->dev, &xso->dev_tracker);
-- 
2.39.1

[PATCH net-next v1 04/10] net/mlx5e: Fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 75 ++++++++-----------
 1 file changed, 32 insertions(+), 43 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index a889df77dd2d..e84c3400ba1d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -162,91 +162,87 @@ void mlx5e_ipsec_build_accel_xfrm_attrs(struct mlx5e_ipsec_sa_entry *sa_entry,
 	mlx5e_ipsec_init_limits(sa_entry, attrs);
 }
 
-static inline int mlx5e_xfrm_validate_state(struct xfrm_state *x)
+static int mlx5e_xfrm_validate_state(struct mlx5_core_dev *mdev,
+				     struct xfrm_state *x,
+				     struct netlink_ext_ack *extack)
 {
-	struct net_device *netdev = x->xso.real_dev;
-	struct mlx5e_priv *priv;
-
-	priv = netdev_priv(netdev);
-
 	if (x->props.aalgo != SADB_AALG_NONE) {
-		netdev_info(netdev, "Cannot offload authenticated xfrm states\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload authenticated xfrm states");
 		return -EINVAL;
 	}
 	if (x->props.ealgo != SADB_X_EALG_AES_GCM_ICV16) {
-		netdev_info(netdev, "Only AES-GCM-ICV16 xfrm state may be offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only AES-GCM-ICV16 xfrm state may be offloaded");
 		return -EINVAL;
 	}
 	if (x->props.calgo != SADB_X_CALG_NONE) {
-		netdev_info(netdev, "Cannot offload compressed xfrm states\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload compressed xfrm states");
 		return -EINVAL;
 	}
 	if (x->props.flags & XFRM_STATE_ESN &&
-	    !(mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_ESN)) {
-		netdev_info(netdev, "Cannot offload ESN xfrm states\n");
+	    !(mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_ESN)) {
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload ESN xfrm states");
 		return -EINVAL;
 	}
 	if (x->props.family != AF_INET &&
 	    x->props.family != AF_INET6) {
-		netdev_info(netdev, "Only IPv4/6 xfrm states may be offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only IPv4/6 xfrm states may be offloaded");
 		return -EINVAL;
 	}
 	if (x->id.proto != IPPROTO_ESP) {
-		netdev_info(netdev, "Only ESP xfrm state may be offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only ESP xfrm state may be offloaded");
 		return -EINVAL;
 	}
 	if (x->encap) {
-		netdev_info(netdev, "Encapsulated xfrm state may not be offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Encapsulated xfrm state may not be offloaded");
 		return -EINVAL;
 	}
 	if (!x->aead) {
-		netdev_info(netdev, "Cannot offload xfrm states without aead\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states without aead");
 		return -EINVAL;
 	}
 	if (x->aead->alg_icv_len != 128) {
-		netdev_info(netdev, "Cannot offload xfrm states with AEAD ICV length other than 128bit\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with AEAD ICV length other than 128bit");
 		return -EINVAL;
 	}
 	if ((x->aead->alg_key_len != 128 + 32) &&
 	    (x->aead->alg_key_len != 256 + 32)) {
-		netdev_info(netdev, "Cannot offload xfrm states with AEAD key length other than 128/256 bit\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with AEAD key length other than 128/256 bit");
 		return -EINVAL;
 	}
 	if (x->tfcpad) {
-		netdev_info(netdev, "Cannot offload xfrm states with tfc padding\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with tfc padding");
 		return -EINVAL;
 	}
 	if (!x->geniv) {
-		netdev_info(netdev, "Cannot offload xfrm states without geniv\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states without geniv");
 		return -EINVAL;
 	}
 	if (strcmp(x->geniv, "seqiv")) {
-		netdev_info(netdev, "Cannot offload xfrm states with geniv other than seqiv\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with geniv other than seqiv");
 		return -EINVAL;
 	}
 	switch (x->xso.type) {
 	case XFRM_DEV_OFFLOAD_CRYPTO:
-		if (!(mlx5_ipsec_device_caps(priv->mdev) &
-		      MLX5_IPSEC_CAP_CRYPTO)) {
-			netdev_info(netdev, "Crypto offload is not supported\n");
+		if (!(mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_CRYPTO)) {
+			NL_SET_ERR_MSG_MOD(extack, "Crypto offload is not supported");
 			return -EINVAL;
 		}
 
 		if (x->props.mode != XFRM_MODE_TRANSPORT &&
 		    x->props.mode != XFRM_MODE_TUNNEL) {
-			netdev_info(netdev, "Only transport and tunnel xfrm states may be offloaded\n");
+			NL_SET_ERR_MSG_MOD(extack, "Only transport and tunnel xfrm states may be offloaded");
 			return -EINVAL;
 		}
 		break;
 	case XFRM_DEV_OFFLOAD_PACKET:
-		if (!(mlx5_ipsec_device_caps(priv->mdev) &
+		if (!(mlx5_ipsec_device_caps(mdev) &
 		      MLX5_IPSEC_CAP_PACKET_OFFLOAD)) {
-			netdev_info(netdev, "Packet offload is not supported\n");
+			NL_SET_ERR_MSG_MOD(extack, "Packet offload is not supported");
 			return -EINVAL;
 		}
 
 		if (x->props.mode != XFRM_MODE_TRANSPORT) {
-			netdev_info(netdev, "Only transport xfrm states may be offloaded in packet mode\n");
+			NL_SET_ERR_MSG_MOD(extack, "Only transport xfrm states may be offloaded in packet mode");
 			return -EINVAL;
 		}
 
@@ -254,35 +250,30 @@ static inline int mlx5e_xfrm_validate_state(struct xfrm_state *x)
 		    x->replay_esn->replay_window != 64 &&
 		    x->replay_esn->replay_window != 128 &&
 		    x->replay_esn->replay_window != 256) {
-			netdev_info(netdev,
-				    "Unsupported replay window size %u\n",
-				    x->replay_esn->replay_window);
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported replay window size");
 			return -EINVAL;
 		}
 
 		if (!x->props.reqid) {
-			netdev_info(netdev, "Cannot offload without reqid\n");
+			NL_SET_ERR_MSG_MOD(extack, "Cannot offload without reqid");
 			return -EINVAL;
 		}
 
 		if (x->lft.hard_byte_limit != XFRM_INF ||
 		    x->lft.soft_byte_limit != XFRM_INF) {
-			netdev_info(netdev,
-				    "Device doesn't support limits in bytes\n");
+			NL_SET_ERR_MSG_MOD(extack, "Device doesn't support limits in bytes");
 			return -EINVAL;
 		}
 
 		if (x->lft.soft_packet_limit >= x->lft.hard_packet_limit &&
 		    x->lft.hard_packet_limit != XFRM_INF) {
 			/* XFRM stack doesn't prevent such configuration :(. */
-			netdev_info(netdev,
-				    "Hard packet limit must be greater than soft one\n");
+			NL_SET_ERR_MSG_MOD(extack, "Hard packet limit must be greater than soft one");
 			return -EINVAL;
 		}
 		break;
 	default:
-		netdev_info(netdev, "Unsupported xfrm offload type %d\n",
-			    x->xso.type);
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported xfrm offload type");
 		return -EINVAL;
 	}
 	return 0;
@@ -312,15 +303,13 @@ static int mlx5e_xfrm_add_state(struct xfrm_state *x,
 		return -EOPNOTSUPP;
 
 	ipsec = priv->ipsec;
-	err = mlx5e_xfrm_validate_state(x);
+	err = mlx5e_xfrm_validate_state(priv->mdev, x, extack);
 	if (err)
 		return err;
 
 	sa_entry = kzalloc(sizeof(*sa_entry), GFP_KERNEL);
-	if (!sa_entry) {
-		err = -ENOMEM;
-		goto out;
-	}
+	if (!sa_entry)
+		return -ENOMEM;
 
 	sa_entry->x = x;
 	sa_entry->ipsec = ipsec;
@@ -361,7 +350,7 @@ static int mlx5e_xfrm_add_state(struct xfrm_state *x,
 	mlx5_ipsec_free_sa_ctx(sa_entry);
 err_xfrm:
 	kfree(sa_entry);
-out:
+	NL_SET_ERR_MSG_MOD(extack, "Device failed to offload this policy");
 	return err;
 }
 
-- 
2.39.1

[PATCH net-next v1 05/10] netdevsim: Fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/net/netdevsim/ipsec.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/netdevsim/ipsec.c b/drivers/net/netdevsim/ipsec.c
index 84a02d69abad..f0d58092e7e9 100644
--- a/drivers/net/netdevsim/ipsec.c
+++ b/drivers/net/netdevsim/ipsec.c
@@ -140,25 +140,24 @@ static int nsim_ipsec_add_sa(struct xfrm_state *xs,
 	ipsec = &ns->ipsec;
 
 	if (xs->id.proto != IPPROTO_ESP && xs->id.proto != IPPROTO_AH) {
-		netdev_err(dev, "Unsupported protocol 0x%04x for ipsec offload\n",
-			   xs->id.proto);
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol for ipsec offload");
 		return -EINVAL;
 	}
 
 	if (xs->calg) {
-		netdev_err(dev, "Compression offload not supported\n");
+		NL_SET_ERR_MSG_MOD(extack, "Compression offload not supported");
 		return -EINVAL;
 	}
 
 	if (xs->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
-		netdev_err(dev, "Unsupported ipsec offload type\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported ipsec offload type");
 		return -EINVAL;
 	}
 
 	/* find the first unused index */
 	ret = nsim_ipsec_find_empty_idx(ipsec);
 	if (ret < 0) {
-		netdev_err(dev, "No space for SA in Rx table!\n");
+		NL_SET_ERR_MSG_MOD(extack, "No space for SA in Rx table!");
 		return ret;
 	}
 	sa_idx = (u16)ret;
@@ -173,7 +172,7 @@ static int nsim_ipsec_add_sa(struct xfrm_state *xs,
 	/* get the key and salt */
 	ret = nsim_ipsec_parse_proto_keys(xs, sa.key, &sa.salt);
 	if (ret) {
-		netdev_err(dev, "Failed to get key data for SA table\n");
+		NL_SET_ERR_MSG_MOD(extack, "Failed to get key data for SA table");
 		return ret;
 	}
 
-- 
2.39.1

[PATCH net-next v1 06/10] nfp: fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../net/ethernet/netronome/nfp/crypto/ipsec.c | 38 +++++++++----------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
index 41b98f2b7402..b44263177981 100644
--- a/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
+++ b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
@@ -282,7 +282,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		cfg->ctrl_word.mode = NFP_IPSEC_PROTMODE_TRANSPORT;
 		break;
 	default:
-		nn_err(nn, "Unsupported mode for xfrm offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported mode for xfrm offload");
 		return -EINVAL;
 	}
 
@@ -294,17 +294,17 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		cfg->ctrl_word.proto = NFP_IPSEC_PROTOCOL_AH;
 		break;
 	default:
-		nn_err(nn, "Unsupported protocol for xfrm offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol for xfrm offload");
 		return -EINVAL;
 	}
 
 	if (x->props.flags & XFRM_STATE_ESN) {
-		nn_err(nn, "Unsupported XFRM_REPLAY_MODE_ESN for xfrm offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported XFRM_REPLAY_MODE_ESN for xfrm offload");
 		return -EINVAL;
 	}
 
 	if (x->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
-		nn_err(nn, "Unsupported xfrm offload tyoe\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported xfrm offload type");
 		return -EINVAL;
 	}
 
@@ -321,7 +321,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		if (x->aead) {
 			trunc_len = -1;
 		} else {
-			nn_err(nn, "Unsupported authentication algorithm\n");
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm");
 			return -EINVAL;
 		}
 		break;
@@ -345,19 +345,19 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		set_sha2_512hmac(cfg, &trunc_len);
 		break;
 	default:
-		nn_err(nn, "Unsupported authentication algorithm\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm");
 		return -EINVAL;
 	}
 
 	if (!trunc_len) {
-		nn_err(nn, "Unsupported authentication algorithm trunc length\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm trunc length");
 		return -EINVAL;
 	}
 
 	if (x->aalg) {
 		key_len = DIV_ROUND_UP(x->aalg->alg_key_len, BITS_PER_BYTE);
 		if (key_len > sizeof(cfg->auth_key)) {
-			nn_err(nn, "Insufficient space for offloaded auth key\n");
+			NL_SET_ERR_MSG_MOD(extack, "Insufficient space for offloaded auth key");
 			return -EINVAL;
 		}
 		for (i = 0; i < key_len / sizeof(cfg->auth_key[0]) ; i++)
@@ -379,12 +379,12 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 	case SADB_X_EALG_AES_GCM_ICV16:
 	case SADB_X_EALG_NULL_AES_GMAC:
 		if (!x->aead) {
-			nn_err(nn, "Invalid AES key data\n");
+			NL_SET_ERR_MSG_MOD(extack, "Invalid AES key data");
 			return -EINVAL;
 		}
 
 		if (x->aead->alg_icv_len != 128) {
-			nn_err(nn, "ICV must be 128bit with SADB_X_EALG_AES_GCM_ICV16\n");
+			NL_SET_ERR_MSG_MOD(extack, "ICV must be 128bit with SADB_X_EALG_AES_GCM_ICV16");
 			return -EINVAL;
 		}
 		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CTR;
@@ -392,23 +392,23 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 
 		/* Aead->alg_key_len includes 32-bit salt */
 		if (set_aes_keylen(cfg, x->props.ealgo, x->aead->alg_key_len - 32)) {
-			nn_err(nn, "Unsupported AES key length %d\n", x->aead->alg_key_len);
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported AES key length");
 			return -EINVAL;
 		}
 		break;
 	case SADB_X_EALG_AESCBC:
 		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CBC;
 		if (!x->ealg) {
-			nn_err(nn, "Invalid AES key data\n");
+			NL_SET_ERR_MSG_MOD(extack, "Invalid AES key data");
 			return -EINVAL;
 		}
 		if (set_aes_keylen(cfg, x->props.ealgo, x->ealg->alg_key_len) < 0) {
-			nn_err(nn, "Unsupported AES key length %d\n", x->ealg->alg_key_len);
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported AES key length");
 			return -EINVAL;
 		}
 		break;
 	default:
-		nn_err(nn, "Unsupported encryption algorithm for offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported encryption algorithm for offload");
 		return -EINVAL;
 	}
 
@@ -419,7 +419,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		key_len -= salt_len;
 
 		if (key_len > sizeof(cfg->ciph_key)) {
-			nn_err(nn, "aead: Insufficient space for offloaded key\n");
+			NL_SET_ERR_MSG_MOD(extack, "aead: Insufficient space for offloaded key");
 			return -EINVAL;
 		}
 
@@ -435,7 +435,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		key_len = DIV_ROUND_UP(x->ealg->alg_key_len, BITS_PER_BYTE);
 
 		if (key_len > sizeof(cfg->ciph_key)) {
-			nn_err(nn, "ealg: Insufficient space for offloaded key\n");
+			NL_SET_ERR_MSG_MOD(extack, "ealg: Insufficient space for offloaded key");
 			return -EINVAL;
 		}
 		for (i = 0; i < key_len / sizeof(cfg->ciph_key[0]) ; i++)
@@ -458,7 +458,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 		}
 		break;
 	default:
-		nn_err(nn, "Unsupported address family\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported address family");
 		return -EINVAL;
 	}
 
@@ -473,7 +473,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 	err = xa_alloc(&nn->xa_ipsec, &saidx, x,
 		       XA_LIMIT(0, NFP_NET_IPSEC_MAX_SA_CNT - 1), GFP_KERNEL);
 	if (err < 0) {
-		nn_err(nn, "Unable to get sa_data number for IPsec\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unable to get sa_data number for IPsec");
 		return err;
 	}
 
@@ -481,7 +481,7 @@ static int nfp_net_xfrm_add_state(struct xfrm_state *x,
 	err = nfp_ipsec_cfg_cmd_issue(nn, NFP_IPSEC_CFG_MSSG_ADD_SA, saidx, &msg);
 	if (err) {
 		xa_erase(&nn->xa_ipsec, saidx);
-		nn_err(nn, "Failed to issue IPsec command err ret=%d\n", err);
+		NL_SET_ERR_MSG_MOD(extack, "Failed to issue IPsec command");
 		return err;
 	}
 
-- 
2.39.1

[PATCH net-next v1 07/10] ixgbevf: fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/net/ethernet/intel/ixgbevf/ipsec.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ipsec.c b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
index 752b9df4fb51..66cf17f19408 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
@@ -272,18 +272,17 @@ static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
 	ipsec = adapter->ipsec;
 
 	if (xs->id.proto != IPPROTO_ESP && xs->id.proto != IPPROTO_AH) {
-		netdev_err(dev, "Unsupported protocol 0x%04x for IPsec offload\n",
-			   xs->id.proto);
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol for IPsec offload");
 		return -EINVAL;
 	}
 
 	if (xs->props.mode != XFRM_MODE_TRANSPORT) {
-		netdev_err(dev, "Unsupported mode for ipsec offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported mode for ipsec offload");
 		return -EINVAL;
 	}
 
 	if (xs->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
-		netdev_err(dev, "Unsupported ipsec offload type\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported ipsec offload type");
 		return -EINVAL;
 	}
 
@@ -291,14 +290,14 @@ static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
 		struct rx_sa rsa;
 
 		if (xs->calg) {
-			netdev_err(dev, "Compression offload not supported\n");
+			NL_SET_ERR_MSG_MOD(extack, "Compression offload not supported");
 			return -EINVAL;
 		}
 
 		/* find the first unused index */
 		ret = ixgbevf_ipsec_find_empty_idx(ipsec, true);
 		if (ret < 0) {
-			netdev_err(dev, "No space for SA in Rx table!\n");
+			NL_SET_ERR_MSG_MOD(extack, "No space for SA in Rx table!");
 			return ret;
 		}
 		sa_idx = (u16)ret;
@@ -313,7 +312,7 @@ static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
 		/* get the key and salt */
 		ret = ixgbevf_ipsec_parse_proto_keys(xs, rsa.key, &rsa.salt);
 		if (ret) {
-			netdev_err(dev, "Failed to get key data for Rx SA table\n");
+			NL_SET_ERR_MSG_MOD(extack, "Failed to get key data for Rx SA table");
 			return ret;
 		}
 
@@ -352,7 +351,7 @@ static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
 		/* find the first unused index */
 		ret = ixgbevf_ipsec_find_empty_idx(ipsec, false);
 		if (ret < 0) {
-			netdev_err(dev, "No space for SA in Tx table\n");
+			NL_SET_ERR_MSG_MOD(extack, "No space for SA in Tx table");
 			return ret;
 		}
 		sa_idx = (u16)ret;
@@ -366,7 +365,7 @@ static int ixgbevf_ipsec_add_sa(struct xfrm_state *xs,
 
 		ret = ixgbevf_ipsec_parse_proto_keys(xs, tsa.key, &tsa.salt);
 		if (ret) {
-			netdev_err(dev, "Failed to get key data for Tx SA table\n");
+			NL_SET_ERR_MSG_MOD(extack, "Failed to get key data for Tx SA table");
 			memset(&tsa, 0, sizeof(tsa));
 			return ret;
 		}
-- 
2.39.1

[PATCH net-next v1 08/10] ixgbe: fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../net/ethernet/intel/ixgbe/ixgbe_ipsec.c    | 21 +++++++++----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 07c37dc619e8..13a6fca31004 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -572,23 +572,22 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 	int i;
 
 	if (xs->id.proto != IPPROTO_ESP && xs->id.proto != IPPROTO_AH) {
-		netdev_err(dev, "Unsupported protocol 0x%04x for ipsec offload\n",
-			   xs->id.proto);
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol for ipsec offload");
 		return -EINVAL;
 	}
 
 	if (xs->props.mode != XFRM_MODE_TRANSPORT) {
-		netdev_err(dev, "Unsupported mode for ipsec offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported mode for ipsec offload");
 		return -EINVAL;
 	}
 
 	if (ixgbe_ipsec_check_mgmt_ip(xs)) {
-		netdev_err(dev, "IPsec IP addr clash with mgmt filters\n");
+		NL_SET_ERR_MSG_MOD(extack, "IPsec IP addr clash with mgmt filters");
 		return -EINVAL;
 	}
 
 	if (xs->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
-		netdev_err(dev, "Unsupported ipsec offload type\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported ipsec offload type");
 		return -EINVAL;
 	}
 
@@ -596,14 +595,14 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 		struct rx_sa rsa;
 
 		if (xs->calg) {
-			netdev_err(dev, "Compression offload not supported\n");
+			NL_SET_ERR_MSG_MOD(extack, "Compression offload not supported");
 			return -EINVAL;
 		}
 
 		/* find the first unused index */
 		ret = ixgbe_ipsec_find_empty_idx(ipsec, true);
 		if (ret < 0) {
-			netdev_err(dev, "No space for SA in Rx table!\n");
+			NL_SET_ERR_MSG_MOD(extack, "No space for SA in Rx table!");
 			return ret;
 		}
 		sa_idx = (u16)ret;
@@ -618,7 +617,7 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 		/* get the key and salt */
 		ret = ixgbe_ipsec_parse_proto_keys(xs, rsa.key, &rsa.salt);
 		if (ret) {
-			netdev_err(dev, "Failed to get key data for Rx SA table\n");
+			NL_SET_ERR_MSG_MOD(extack, "Failed to get key data for Rx SA table");
 			return ret;
 		}
 
@@ -678,7 +677,7 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 
 		} else {
 			/* no match and no empty slot */
-			netdev_err(dev, "No space for SA in Rx IP SA table\n");
+			NL_SET_ERR_MSG_MOD(extack, "No space for SA in Rx IP SA table");
 			memset(&rsa, 0, sizeof(rsa));
 			return -ENOSPC;
 		}
@@ -713,7 +712,7 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 		/* find the first unused index */
 		ret = ixgbe_ipsec_find_empty_idx(ipsec, false);
 		if (ret < 0) {
-			netdev_err(dev, "No space for SA in Tx table\n");
+			NL_SET_ERR_MSG_MOD(extack, "No space for SA in Tx table");
 			return ret;
 		}
 		sa_idx = (u16)ret;
@@ -727,7 +726,7 @@ static int ixgbe_ipsec_add_sa(struct xfrm_state *xs,
 
 		ret = ixgbe_ipsec_parse_proto_keys(xs, tsa.key, &tsa.salt);
 		if (ret) {
-			netdev_err(dev, "Failed to get key data for Tx SA table\n");
+			NL_SET_ERR_MSG_MOD(extack, "Failed to get key data for Tx SA table");
 			memset(&tsa, 0, sizeof(tsa));
 			return ret;
 		}
-- 
2.39.1

[PATCH net-next v1 09/10] bonding: fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/net/bonding/bond_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 686b2a6fd674..00646aa315c3 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -444,7 +444,7 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs,
 	if (!slave->dev->xfrmdev_ops ||
 	    !slave->dev->xfrmdev_ops->xdo_dev_state_add ||
 	    netif_is_bond_master(slave->dev)) {
-		slave_warn(bond_dev, slave->dev, "Slave does not support ipsec offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Slave does not support ipsec offload");
 		rcu_read_unlock();
 		return -EINVAL;
 	}
-- 
2.39.1

[PATCH net-next v1 10/10] cxgb4: fill IPsec state validation failure reason

[Leon Romanovsky]

From: Leon Romanovsky <leonro@nvidia.com>

Rely on extack to return failure reason.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 .../net/ethernet/chelsio/cxgb4/cxgb4_main.c   |  3 +-
 .../inline_crypto/ch_ipsec/chcr_ipsec.c       | 28 +++++++++----------
 2 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 6c0a41f3ae44..7db2403c4c9c 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -6497,8 +6497,7 @@ static int cxgb4_xfrm_add_state(struct xfrm_state *x,
 	int ret;
 
 	if (!mutex_trylock(&uld_mutex)) {
-		dev_dbg(adap->pdev_dev,
-			"crypto uld critical resource is under use\n");
+		NL_SET_ERR_MSG_MOD(extack, "crypto uld critical resource is under use");
 		return -EBUSY;
 	}
 	ret = chcr_offload_state(adap, CXGB4_XFRMDEV_OPS);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
index ac2ea6206af1..3731c93f8f95 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/ch_ipsec/chcr_ipsec.c
@@ -234,59 +234,59 @@ static int ch_ipsec_xfrm_add_state(struct xfrm_state *x,
 	int res = 0;
 
 	if (x->props.aalgo != SADB_AALG_NONE) {
-		pr_debug("Cannot offload authenticated xfrm states\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload authenticated xfrm states");
 		return -EINVAL;
 	}
 	if (x->props.calgo != SADB_X_CALG_NONE) {
-		pr_debug("Cannot offload compressed xfrm states\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload compressed xfrm states");
 		return -EINVAL;
 	}
 	if (x->props.family != AF_INET &&
 	    x->props.family != AF_INET6) {
-		pr_debug("Only IPv4/6 xfrm state offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only IPv4/6 xfrm state offloaded");
 		return -EINVAL;
 	}
 	if (x->props.mode != XFRM_MODE_TRANSPORT &&
 	    x->props.mode != XFRM_MODE_TUNNEL) {
-		pr_debug("Only transport and tunnel xfrm offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only transport and tunnel xfrm offload");
 		return -EINVAL;
 	}
 	if (x->id.proto != IPPROTO_ESP) {
-		pr_debug("Only ESP xfrm state offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Only ESP xfrm state offloaded");
 		return -EINVAL;
 	}
 	if (x->encap) {
-		pr_debug("Encapsulated xfrm state not offloaded\n");
+		NL_SET_ERR_MSG_MOD(extack, "Encapsulated xfrm state not offloaded");
 		return -EINVAL;
 	}
 	if (!x->aead) {
-		pr_debug("Cannot offload xfrm states without aead\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states without aead");
 		return -EINVAL;
 	}
 	if (x->aead->alg_icv_len != 128 &&
 	    x->aead->alg_icv_len != 96) {
-		pr_debug("Cannot offload xfrm states with AEAD ICV length other than 96b & 128b\n");
-	return -EINVAL;
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with AEAD ICV length other than 96b & 128b");
+		return -EINVAL;
 	}
 	if ((x->aead->alg_key_len != 128 + 32) &&
 	    (x->aead->alg_key_len != 256 + 32)) {
-		pr_debug("cannot offload xfrm states with AEAD key length other than 128/256 bit\n");
+		NL_SET_ERR_MSG_MOD(extack, "cannot offload xfrm states with AEAD key length other than 128/256 bit");
 		return -EINVAL;
 	}
 	if (x->tfcpad) {
-		pr_debug("Cannot offload xfrm states with tfc padding\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with tfc padding");
 		return -EINVAL;
 	}
 	if (!x->geniv) {
-		pr_debug("Cannot offload xfrm states without geniv\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states without geniv");
 		return -EINVAL;
 	}
 	if (strcmp(x->geniv, "seqiv")) {
-		pr_debug("Cannot offload xfrm states with geniv other than seqiv\n");
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with geniv other than seqiv");
 		return -EINVAL;
 	}
 	if (x->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
-		pr_debug("Unsupported xfrm offload\n");
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported xfrm offload");
 		return -EINVAL;
 	}
 
-- 
2.39.1

Re: [PATCH net-next v1 00/10] Convert drivers to return XFRM configuration errors through extack

[Jakub Kicinski]

On Tue, 24 Jan 2023 13:54:56 +0200 Leon Romanovsky wrote:
> This series continues effort started by Sabrina to return XFRM configuration
> errors through extack. It allows for user space software stack easily present
> driver failure reasons to users.

Steffen, would you like to take these into your tree or should we apply
directly? Looks like mostly driver changes.

Re: [PATCH net-next v1 00/10] Convert drivers to return XFRM configuration errors through extack

[Steffen Klassert]

On Wed, Jan 25, 2023 at 11:01:33AM -0800, Jakub Kicinski wrote:
> On Tue, 24 Jan 2023 13:54:56 +0200 Leon Romanovsky wrote:
> > This series continues effort started by Sabrina to return XFRM configuration
> > errors through extack. It allows for user space software stack easily present
> > driver failure reasons to users.
> 
> Steffen, would you like to take these into your tree or should we apply
> directly? Looks like mostly driver changes.

You can just take it directly as it is mostly driver changes.
The ipsec-next tree is currently empty so there will be no
conflicts.

Thanks!

Re: [PATCH net-next v1 00/10] Convert drivers to return XFRM configuration errors through extack

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 24 Jan 2023 13:54:56 +0200 you wrote:
> Changelog
> v1:
>  * Fixed rebase errors in mlx5 and cxgb4 drivers
>  * Fixed previously existed typo in nfp driver
>  * Added Simon's ROB
>  * Removed my double SOB tags
> v0: https://lore.kernel.org/all/cover.1674481435.git.leon@kernel.org
> 
> [...]

Here is the summary with links:
  - [net-next,v1,01/10] xfrm: extend add policy callback to set failure reason
    https://git.kernel.org/netdev/net-next/c/3089386db090
  - [net-next,v1,02/10] net/mlx5e: Fill IPsec policy validation failure reason
    https://git.kernel.org/netdev/net-next/c/1bb70c5ab6ec
  - [net-next,v1,03/10] xfrm: extend add state callback to set failure reason
    https://git.kernel.org/netdev/net-next/c/7681a4f58fb9
  - [net-next,v1,04/10] net/mlx5e: Fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/902812b81604
  - [net-next,v1,05/10] netdevsim: Fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/6c4869795568
  - [net-next,v1,06/10] nfp: fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/05ddf5f8cb6c
  - [net-next,v1,07/10] ixgbevf: fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/c068ec5c964d
  - [net-next,v1,08/10] ixgbe: fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/505c500cfcb4
  - [net-next,v1,09/10] bonding: fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/3fe57986271a
  - [net-next,v1,10/10] cxgb4: fill IPsec state validation failure reason
    https://git.kernel.org/netdev/net-next/c/8c284ea429d2

You are awesome, thank you!
-- 
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