| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 12 Oct 2020 15:41:51 -0700
From: Saeed Mahameed <saeedm@...dia.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: <netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>,
"Huy Nguyen" <huyn@...lanox.com>,
Boris Pismenny <borisp@...dia.com>,
Tariq Toukan <tariqt@...dia.com>,
Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 3/4] net/mlx5e: IPsec: Add TX steering rule per IPsec state
From: Huy Nguyen <huyn@...lanox.com>
Add new FTE in TX IPsec FT per IPsec state. It has the
same matching criteria as the RX steering rule.
The IPsec FT is created/destroyed when the first/last rule
is added/deleted respectively.
Signed-off-by: Huy Nguyen <huyn@...lanox.com>
Reviewed-by: Boris Pismenny <borisp@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mellanox/mlx5/core/en_accel/ipsec.h | 2 +
.../mellanox/mlx5/core/en_accel/ipsec_fs.c | 178 +++++++++++++++++-
include/linux/mlx5/qp.h | 6 +-
3 files changed, 181 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
index 0fc8b4d4f4a3..6164c7f59efb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -76,6 +76,7 @@ struct mlx5e_ipsec_stats {
};
struct mlx5e_accel_fs_esp;
+struct mlx5e_ipsec_tx;
struct mlx5e_ipsec {
struct mlx5e_priv *en_priv;
@@ -87,6 +88,7 @@ struct mlx5e_ipsec {
struct mlx5e_ipsec_stats stats;
struct workqueue_struct *wq;
struct mlx5e_accel_fs_esp *rx_fs;
+ struct mlx5e_ipsec_tx *tx_fs;
};
struct mlx5e_ipsec_esn_state {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index b974f3cd1005..0e45590662a8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -34,6 +34,12 @@ struct mlx5e_accel_fs_esp {
struct mlx5e_accel_fs_esp_prot fs_prot[ACCEL_FS_ESP_NUM_TYPES];
};
+struct mlx5e_ipsec_tx {
+ struct mlx5_flow_table *ft;
+ struct mutex mutex; /* Protect IPsec TX steering */
+ u32 refcnt;
+};
+
/* IPsec RX flow steering */
static enum mlx5e_traffic_types fs_esp2tt(enum accel_fs_esp_type i)
{
@@ -323,6 +329,77 @@ static void rx_ft_put(struct mlx5e_priv *priv, enum accel_fs_esp_type type)
mutex_unlock(&fs_prot->prot_mutex);
}
+/* IPsec TX flow steering */
+static int tx_create(struct mlx5e_priv *priv)
+{
+ struct mlx5_flow_table_attr ft_attr = {};
+ struct mlx5e_ipsec *ipsec = priv->ipsec;
+ struct mlx5_flow_table *ft;
+ int err;
+
+ priv->fs.egress_ns =
+ mlx5_get_flow_namespace(priv->mdev,
+ MLX5_FLOW_NAMESPACE_EGRESS_KERNEL);
+ if (!priv->fs.egress_ns)
+ return -EOPNOTSUPP;
+
+ ft_attr.max_fte = NUM_IPSEC_FTE;
+ ft_attr.autogroup.max_num_groups = 1;
+ ft = mlx5_create_auto_grouped_flow_table(priv->fs.egress_ns, &ft_attr);
+ if (IS_ERR(ft)) {
+ err = PTR_ERR(ft);
+ netdev_err(priv->netdev, "fail to create ipsec tx ft err=%d\n", err);
+ return err;
+ }
+ ipsec->tx_fs->ft = ft;
+ return 0;
+}
+
+static void tx_destroy(struct mlx5e_priv *priv)
+{
+ struct mlx5e_ipsec *ipsec = priv->ipsec;
+
+ if (IS_ERR_OR_NULL(ipsec->tx_fs->ft))
+ return;
+
+ mlx5_destroy_flow_table(ipsec->tx_fs->ft);
+ ipsec->tx_fs->ft = NULL;
+}
+
+static int tx_ft_get(struct mlx5e_priv *priv)
+{
+ struct mlx5e_ipsec_tx *tx_fs = priv->ipsec->tx_fs;
+ int err = 0;
+
+ mutex_lock(&tx_fs->mutex);
+ if (tx_fs->refcnt++)
+ goto out;
+
+ err = tx_create(priv);
+ if (err) {
+ tx_fs->refcnt--;
+ goto out;
+ }
+
+out:
+ mutex_unlock(&tx_fs->mutex);
+ return err;
+}
+
+static void tx_ft_put(struct mlx5e_priv *priv)
+{
+ struct mlx5e_ipsec_tx *tx_fs = priv->ipsec->tx_fs;
+
+ mutex_lock(&tx_fs->mutex);
+ if (--tx_fs->refcnt)
+ goto out;
+
+ tx_destroy(priv);
+
+out:
+ mutex_unlock(&tx_fs->mutex);
+}
+
static void setup_fte_common(struct mlx5_accel_esp_xfrm_attrs *attrs,
u32 ipsec_obj_id,
struct mlx5_flow_spec *spec,
@@ -457,6 +534,54 @@ static int rx_add_rule(struct mlx5e_priv *priv,
return err;
}
+static int tx_add_rule(struct mlx5e_priv *priv,
+ struct mlx5_accel_esp_xfrm_attrs *attrs,
+ u32 ipsec_obj_id,
+ struct mlx5e_ipsec_rule *ipsec_rule)
+{
+ struct mlx5_flow_act flow_act = {};
+ struct mlx5_flow_handle *rule;
+ struct mlx5_flow_spec *spec;
+ int err = 0;
+
+ err = tx_ft_get(priv);
+ if (err)
+ return err;
+
+ spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+ if (!spec) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ setup_fte_common(attrs, ipsec_obj_id, spec, &flow_act);
+
+ /* Add IPsec indicator in metadata_reg_a */
+ spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
+ MLX5_SET(fte_match_param, spec->match_criteria, misc_parameters_2.metadata_reg_a,
+ MLX5_ETH_WQE_FT_META_IPSEC);
+ MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_a,
+ MLX5_ETH_WQE_FT_META_IPSEC);
+
+ flow_act.action = MLX5_FLOW_CONTEXT_ACTION_ALLOW |
+ MLX5_FLOW_CONTEXT_ACTION_IPSEC_ENCRYPT;
+ rule = mlx5_add_flow_rules(priv->ipsec->tx_fs->ft, spec, &flow_act, NULL, 0);
+ if (IS_ERR(rule)) {
+ err = PTR_ERR(rule);
+ netdev_err(priv->netdev, "fail to add ipsec rule attrs->action=0x%x, err=%d\n",
+ attrs->action, err);
+ goto out;
+ }
+
+ ipsec_rule->rule = rule;
+
+out:
+ kvfree(spec);
+ if (err)
+ tx_ft_put(priv);
+ return err;
+}
+
static void rx_del_rule(struct mlx5e_priv *priv,
struct mlx5_accel_esp_xfrm_attrs *attrs,
struct mlx5e_ipsec_rule *ipsec_rule)
@@ -470,15 +595,27 @@ static void rx_del_rule(struct mlx5e_priv *priv,
rx_ft_put(priv, attrs->is_ipv6 ? ACCEL_FS_ESP6 : ACCEL_FS_ESP4);
}
+static void tx_del_rule(struct mlx5e_priv *priv,
+ struct mlx5e_ipsec_rule *ipsec_rule)
+{
+ mlx5_del_flow_rules(ipsec_rule->rule);
+ ipsec_rule->rule = NULL;
+
+ tx_ft_put(priv);
+}
+
int mlx5e_accel_ipsec_fs_add_rule(struct mlx5e_priv *priv,
struct mlx5_accel_esp_xfrm_attrs *attrs,
u32 ipsec_obj_id,
struct mlx5e_ipsec_rule *ipsec_rule)
{
- if (!priv->ipsec->rx_fs || attrs->action != MLX5_ACCEL_ESP_ACTION_DECRYPT)
+ if (!priv->ipsec->rx_fs)
return -EOPNOTSUPP;
- return rx_add_rule(priv, attrs, ipsec_obj_id, ipsec_rule);
+ if (attrs->action == MLX5_ACCEL_ESP_ACTION_DECRYPT)
+ return rx_add_rule(priv, attrs, ipsec_obj_id, ipsec_rule);
+ else
+ return tx_add_rule(priv, attrs, ipsec_obj_id, ipsec_rule);
}
void mlx5e_accel_ipsec_fs_del_rule(struct mlx5e_priv *priv,
@@ -488,7 +625,18 @@ void mlx5e_accel_ipsec_fs_del_rule(struct mlx5e_priv *priv,
if (!priv->ipsec->rx_fs)
return;
- rx_del_rule(priv, attrs, ipsec_rule);
+ if (attrs->action == MLX5_ACCEL_ESP_ACTION_DECRYPT)
+ rx_del_rule(priv, attrs, ipsec_rule);
+ else
+ tx_del_rule(priv, ipsec_rule);
+}
+
+static void fs_cleanup_tx(struct mlx5e_priv *priv)
+{
+ mutex_destroy(&priv->ipsec->tx_fs->mutex);
+ WARN_ON(priv->ipsec->tx_fs->refcnt);
+ kfree(priv->ipsec->tx_fs);
+ priv->ipsec->tx_fs = NULL;
}
static void fs_cleanup_rx(struct mlx5e_priv *priv)
@@ -507,6 +655,17 @@ static void fs_cleanup_rx(struct mlx5e_priv *priv)
priv->ipsec->rx_fs = NULL;
}
+static int fs_init_tx(struct mlx5e_priv *priv)
+{
+ priv->ipsec->tx_fs =
+ kzalloc(sizeof(struct mlx5e_ipsec_tx), GFP_KERNEL);
+ if (!priv->ipsec->tx_fs)
+ return -ENOMEM;
+
+ mutex_init(&priv->ipsec->tx_fs->mutex);
+ return 0;
+}
+
static int fs_init_rx(struct mlx5e_priv *priv)
{
struct mlx5e_accel_fs_esp_prot *fs_prot;
@@ -532,13 +691,24 @@ void mlx5e_accel_ipsec_fs_cleanup(struct mlx5e_priv *priv)
if (!priv->ipsec->rx_fs)
return;
+ fs_cleanup_tx(priv);
fs_cleanup_rx(priv);
}
int mlx5e_accel_ipsec_fs_init(struct mlx5e_priv *priv)
{
+ int err;
+
if (!mlx5_is_ipsec_device(priv->mdev) || !priv->ipsec)
return -EOPNOTSUPP;
- return fs_init_rx(priv);
+ err = fs_init_tx(priv);
+ if (err)
+ return err;
+
+ err = fs_init_rx(priv);
+ if (err)
+ fs_cleanup_tx(priv);
+
+ return err;
}
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index 36492a1342cf..d75ef8aa8fac 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -245,6 +245,10 @@ enum {
MLX5_ETH_WQE_SWP_OUTER_L4_UDP = 1 << 5,
};
+enum {
+ MLX5_ETH_WQE_FT_META_IPSEC = BIT(0),
+};
+
struct mlx5_wqe_eth_seg {
u8 swp_outer_l4_offset;
u8 swp_outer_l3_offset;
@@ -253,7 +257,7 @@ struct mlx5_wqe_eth_seg {
u8 cs_flags;
u8 swp_flags;
__be16 mss;
- __be32 rsvd2;
+ __be32 flow_table_metadata;
union {
struct {
__be16 sz;
--
2.26.2
Powered by blists - more mailing lists