return (struct mlx5e_ipsec_sa_entry *)x->xso.offload_handle;
}
+static struct mlx5e_ipsec_pol_entry *to_ipsec_pol_entry(struct xfrm_policy *x)
+{
+ return (struct mlx5e_ipsec_pol_entry *)x->xdo.offload_handle;
+}
+
struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *ipsec,
unsigned int handle)
{
queue_work(sa_entry->ipsec->wq, &modify_work->work);
}
+static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x)
+{
+ 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");
+ 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");
+ 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");
+ return -EINVAL;
+ }
+
+ if (!x->xfrm_vec[0].reqid) {
+ netdev_info(netdev, "Cannot offload policy without reqid\n");
+ return -EINVAL;
+ }
+
+ if (x->xdo.type != XFRM_DEV_OFFLOAD_PACKET) {
+ netdev_info(netdev, "Unsupported xfrm offload type\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void
+mlx5e_ipsec_build_accel_pol_attrs(struct mlx5e_ipsec_pol_entry *pol_entry,
+ struct mlx5_accel_pol_xfrm_attrs *attrs)
+{
+ struct xfrm_policy *x = pol_entry->x;
+ struct xfrm_selector *sel;
+
+ sel = &x->selector;
+ memset(attrs, 0, sizeof(*attrs));
+
+ memcpy(&attrs->saddr, sel->saddr.a6, sizeof(attrs->saddr));
+ memcpy(&attrs->daddr, sel->daddr.a6, sizeof(attrs->daddr));
+ attrs->family = sel->family;
+ attrs->dir = x->xdo.dir;
+ attrs->action = x->action;
+ attrs->type = XFRM_DEV_OFFLOAD_PACKET;
+}
+
+static int mlx5e_xfrm_add_policy(struct xfrm_policy *x)
+{
+ struct net_device *netdev = x->xdo.real_dev;
+ struct mlx5e_ipsec_pol_entry *pol_entry;
+ struct mlx5e_priv *priv;
+ int err;
+
+ priv = netdev_priv(netdev);
+ if (!priv->ipsec)
+ return -EOPNOTSUPP;
+
+ err = mlx5e_xfrm_validate_policy(x);
+ if (err)
+ return err;
+
+ pol_entry = kzalloc(sizeof(*pol_entry), GFP_KERNEL);
+ if (!pol_entry)
+ return -ENOMEM;
+
+ pol_entry->x = x;
+ pol_entry->ipsec = priv->ipsec;
+
+ mlx5e_ipsec_build_accel_pol_attrs(pol_entry, &pol_entry->attrs);
+ err = mlx5e_accel_ipsec_fs_add_pol(pol_entry);
+ if (err)
+ goto err_fs;
+
+ x->xdo.offload_handle = (unsigned long)pol_entry;
+ return 0;
+
+err_fs:
+ kfree(pol_entry);
+ return err;
+}
+
+static void mlx5e_xfrm_free_policy(struct xfrm_policy *x)
+{
+ struct mlx5e_ipsec_pol_entry *pol_entry = to_ipsec_pol_entry(x);
+
+ mlx5e_accel_ipsec_fs_del_pol(pol_entry);
+ kfree(pol_entry);
+}
+
static const struct xfrmdev_ops mlx5e_ipsec_xfrmdev_ops = {
.xdo_dev_state_add = mlx5e_xfrm_add_state,
.xdo_dev_state_delete = mlx5e_xfrm_del_state,
.xdo_dev_state_advance_esn = mlx5e_xfrm_advance_esn_state,
};
+static const struct xfrmdev_ops mlx5e_ipsec_packet_xfrmdev_ops = {
+ .xdo_dev_state_add = mlx5e_xfrm_add_state,
+ .xdo_dev_state_delete = mlx5e_xfrm_del_state,
+ .xdo_dev_state_free = mlx5e_xfrm_free_state,
+ .xdo_dev_offload_ok = mlx5e_ipsec_offload_ok,
+ .xdo_dev_state_advance_esn = mlx5e_xfrm_advance_esn_state,
+
+ .xdo_dev_policy_add = mlx5e_xfrm_add_policy,
+ .xdo_dev_policy_free = mlx5e_xfrm_free_policy,
+};
+
void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
return;
mlx5_core_info(mdev, "mlx5e: IPSec ESP acceleration enabled\n");
- netdev->xfrmdev_ops = &mlx5e_ipsec_xfrmdev_ops;
+
+ if (mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_PACKET_OFFLOAD)
+ netdev->xfrmdev_ops = &mlx5e_ipsec_packet_xfrmdev_ops;
+ else
+ netdev->xfrmdev_ops = &mlx5e_ipsec_xfrmdev_ops;
+
netdev->features |= NETIF_F_HW_ESP;
netdev->hw_enc_features |= NETIF_F_HW_ESP;
struct mlx5e_ipsec_modify_state_work modify_work;
};
+struct mlx5_accel_pol_xfrm_attrs {
+ union {
+ __be32 a4;
+ __be32 a6[4];
+ } saddr;
+
+ union {
+ __be32 a4;
+ __be32 a6[4];
+ } daddr;
+
+ u8 family;
+ u8 action;
+ u8 type : 2;
+ u8 dir : 2;
+};
+
+struct mlx5e_ipsec_pol_entry {
+ struct xfrm_policy *x;
+ struct mlx5e_ipsec *ipsec;
+ struct mlx5_flow_handle *rule;
+ struct mlx5_accel_pol_xfrm_attrs attrs;
+};
+
void mlx5e_ipsec_init(struct mlx5e_priv *priv);
void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
int mlx5e_accel_ipsec_fs_init(struct mlx5e_ipsec *ipsec);
int mlx5e_accel_ipsec_fs_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry);
void mlx5e_accel_ipsec_fs_del_rule(struct mlx5e_ipsec_sa_entry *sa_entry);
+int mlx5e_accel_ipsec_fs_add_pol(struct mlx5e_ipsec_pol_entry *pol_entry);
+void mlx5e_accel_ipsec_fs_del_pol(struct mlx5e_ipsec_pol_entry *pol_entry);
int mlx5_ipsec_create_sa_ctx(struct mlx5e_ipsec_sa_entry *sa_entry);
void mlx5_ipsec_free_sa_ctx(struct mlx5e_ipsec_sa_entry *sa_entry);
{
return sa_entry->ipsec->mdev;
}
+
+static inline struct mlx5_core_dev *
+mlx5e_ipsec_pol2dev(struct mlx5e_ipsec_pol_entry *pol_entry)
+{
+ return pol_entry->ipsec->mdev;
+}
#else
static inline void mlx5e_ipsec_init(struct mlx5e_priv *priv)
{
return err;
}
+static int tx_add_policy(struct mlx5e_ipsec_pol_entry *pol_entry)
+{
+ struct mlx5_accel_pol_xfrm_attrs *attrs = &pol_entry->attrs;
+ struct mlx5_core_dev *mdev = mlx5e_ipsec_pol2dev(pol_entry);
+ struct mlx5_flow_destination dest = {};
+ struct mlx5_flow_act flow_act = {};
+ struct mlx5_flow_handle *rule;
+ struct mlx5_flow_spec *spec;
+ struct mlx5e_ipsec_tx *tx;
+ int err;
+
+ tx = tx_ft_get(mdev, pol_entry->ipsec);
+ if (IS_ERR(tx))
+ return PTR_ERR(tx);
+
+ spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+ if (!spec) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ if (attrs->family == AF_INET)
+ setup_fte_addr4(spec, &attrs->saddr.a4, &attrs->daddr.a4);
+ else
+ setup_fte_addr6(spec, attrs->saddr.a6, attrs->daddr.a6);
+
+ setup_fte_no_frags(spec);
+
+ switch (attrs->action) {
+ case XFRM_POLICY_ALLOW:
+ flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
+ break;
+ case XFRM_POLICY_BLOCK:
+ flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
+ break;
+ default:
+ WARN_ON(true);
+ err = -EINVAL;
+ goto err_action;
+ }
+
+ flow_act.flags |= FLOW_ACT_NO_APPEND;
+ dest.ft = tx->ft.sa;
+ dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
+ rule = mlx5_add_flow_rules(tx->ft.pol, spec, &flow_act, &dest, 1);
+ if (IS_ERR(rule)) {
+ err = PTR_ERR(rule);
+ mlx5_core_err(mdev, "fail to add TX ipsec rule err=%d\n", err);
+ goto err_action;
+ }
+
+ kvfree(spec);
+ pol_entry->rule = rule;
+ return 0;
+
+err_action:
+ kvfree(spec);
+err_alloc:
+ tx_ft_put(pol_entry->ipsec);
+ return err;
+}
+
+static int rx_add_policy(struct mlx5e_ipsec_pol_entry *pol_entry)
+{
+ struct mlx5_accel_pol_xfrm_attrs *attrs = &pol_entry->attrs;
+ struct mlx5_core_dev *mdev = mlx5e_ipsec_pol2dev(pol_entry);
+ struct mlx5_flow_destination dest = {};
+ struct mlx5_flow_act flow_act = {};
+ struct mlx5_flow_handle *rule;
+ struct mlx5_flow_spec *spec;
+ struct mlx5e_ipsec_rx *rx;
+ int err;
+
+ rx = rx_ft_get(mdev, pol_entry->ipsec, attrs->family);
+ if (IS_ERR(rx))
+ return PTR_ERR(rx);
+
+ spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+ if (!spec) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ if (attrs->family == AF_INET)
+ setup_fte_addr4(spec, &attrs->saddr.a4, &attrs->daddr.a4);
+ else
+ setup_fte_addr6(spec, attrs->saddr.a6, attrs->daddr.a6);
+
+ setup_fte_no_frags(spec);
+
+ switch (attrs->action) {
+ case XFRM_POLICY_ALLOW:
+ flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
+ break;
+ case XFRM_POLICY_BLOCK:
+ flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
+ break;
+ default:
+ WARN_ON(true);
+ err = -EINVAL;
+ goto err_action;
+ }
+
+ flow_act.flags |= FLOW_ACT_NO_APPEND;
+ dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
+ dest.ft = rx->ft.sa;
+ rule = mlx5_add_flow_rules(rx->ft.pol, spec, &flow_act, &dest, 1);
+ if (IS_ERR(rule)) {
+ err = PTR_ERR(rule);
+ mlx5_core_err(mdev, "Fail to add RX IPsec policy rule err=%d\n", err);
+ goto err_action;
+ }
+
+ kvfree(spec);
+ pol_entry->rule = rule;
+ return 0;
+
+err_action:
+ kvfree(spec);
+err_alloc:
+ rx_ft_put(mdev, pol_entry->ipsec, attrs->family);
+ return err;
+}
+
int mlx5e_accel_ipsec_fs_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
{
if (sa_entry->attrs.dir == XFRM_DEV_OFFLOAD_OUT)
rx_ft_put(mdev, sa_entry->ipsec, sa_entry->attrs.family);
}
+int mlx5e_accel_ipsec_fs_add_pol(struct mlx5e_ipsec_pol_entry *pol_entry)
+{
+ if (pol_entry->attrs.dir == XFRM_DEV_OFFLOAD_OUT)
+ return tx_add_policy(pol_entry);
+
+ return rx_add_policy(pol_entry);
+}
+
+void mlx5e_accel_ipsec_fs_del_pol(struct mlx5e_ipsec_pol_entry *pol_entry)
+{
+ struct mlx5_core_dev *mdev = mlx5e_ipsec_pol2dev(pol_entry);
+
+ mlx5_del_flow_rules(pol_entry->rule);
+
+ if (pol_entry->attrs.dir == XFRM_DEV_OFFLOAD_OUT) {
+ tx_ft_put(pol_entry->ipsec);
+ return;
+ }
+
+ rx_ft_put(mdev, pol_entry->ipsec, pol_entry->attrs.family);
+}
+
void mlx5e_accel_ipsec_fs_cleanup(struct mlx5e_ipsec *ipsec)
{
if (!ipsec->tx)
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