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Date:   Tue,  8 Dec 2020 11:22:50 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jiri@...dia.com,
        petrm@...dia.com, amcohen@...dia.com, mlxsw@...dia.com,
        Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 10/13] mlxsw: Veto Q-in-VNI for Spectrum-1 ASIC

From: Amit Cohen <amcohen@...dia.com>

Implementation of Q-in-VNI is different between ASIC types, this set adds
support only for Spectrum-2.

Return an error when trying to create VxLAN device and enslave it to
802.1ad bridge in Spectrum-1.

Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 .../net/ethernet/mellanox/mlxsw/spectrum_nve.c |  2 +-
 .../net/ethernet/mellanox/mlxsw/spectrum_nve.h |  2 +-
 .../mellanox/mlxsw/spectrum_nve_vxlan.c        | 18 +++++++++++++++---
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c
index adf499665f87..e5ec595593f4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c
@@ -798,7 +798,7 @@ int mlxsw_sp_nve_fid_enable(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *fid,
 
 	ops = nve->nve_ops_arr[params->type];
 
-	if (!ops->can_offload(nve, params->dev, extack))
+	if (!ops->can_offload(nve, params, extack))
 		return -EINVAL;
 
 	memset(&config, 0, sizeof(config));
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
index 68bd9422be2a..2796d3659979 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
@@ -36,7 +36,7 @@ struct mlxsw_sp_nve {
 struct mlxsw_sp_nve_ops {
 	enum mlxsw_sp_nve_type type;
 	bool (*can_offload)(const struct mlxsw_sp_nve *nve,
-			    const struct net_device *dev,
+			    const struct mlxsw_sp_nve_params *params,
 			    struct netlink_ext_ack *extack);
 	void (*nve_config)(const struct mlxsw_sp_nve *nve,
 			   const struct mlxsw_sp_nve_params *params,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
index b586c8f34d49..3e2bb22e9ca6 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
@@ -22,10 +22,10 @@
 						 VXLAN_F_LEARN)
 
 static bool mlxsw_sp_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
-					   const struct net_device *dev,
+					   const struct mlxsw_sp_nve_params *params,
 					   struct netlink_ext_ack *extack)
 {
-	struct vxlan_dev *vxlan = netdev_priv(dev);
+	struct vxlan_dev *vxlan = netdev_priv(params->dev);
 	struct vxlan_config *cfg = &vxlan->cfg;
 
 	if (cfg->saddr.sa.sa_family != AF_INET) {
@@ -86,6 +86,18 @@ static bool mlxsw_sp_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
 	return true;
 }
 
+static bool mlxsw_sp1_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
+					    const struct mlxsw_sp_nve_params *params,
+					    struct netlink_ext_ack *extack)
+{
+	if (params->ethertype == ETH_P_8021AD) {
+		NL_SET_ERR_MSG_MOD(extack, "VxLAN: 802.1ad bridge is not supported with VxLAN");
+		return false;
+	}
+
+	return mlxsw_sp_nve_vxlan_can_offload(nve, params, extack);
+}
+
 static void mlxsw_sp_nve_vxlan_config(const struct mlxsw_sp_nve *nve,
 				      const struct mlxsw_sp_nve_params *params,
 				      struct mlxsw_sp_nve_config *config)
@@ -287,7 +299,7 @@ mlxsw_sp_nve_vxlan_clear_offload(const struct net_device *nve_dev, __be32 vni)
 
 const struct mlxsw_sp_nve_ops mlxsw_sp1_nve_vxlan_ops = {
 	.type		= MLXSW_SP_NVE_TYPE_VXLAN,
-	.can_offload	= mlxsw_sp_nve_vxlan_can_offload,
+	.can_offload	= mlxsw_sp1_nve_vxlan_can_offload,
 	.nve_config	= mlxsw_sp_nve_vxlan_config,
 	.init		= mlxsw_sp1_nve_vxlan_init,
 	.fini		= mlxsw_sp1_nve_vxlan_fini,
-- 
2.28.0

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