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Date: Sat, 4 Feb 2023 02:08:53 -0800
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>,
Raed Salem <raeds@...dia.com>,
Leon Romanovsky <leonro@...dia.com>
Subject: [net-next 14/15] net/mlx5e: IPsec, support upper protocol selector field offload
From: Raed Salem <raeds@...dia.com>
Add support to policy/state upper protocol selector field offload,
this will enable to select traffic for IPsec operation based on l4
protocol (TCP/UDP) with specific source/destination port.
Signed-off-by: Raed Salem <raeds@...dia.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mellanox/mlx5/core/en_accel/ipsec.c | 23 +++++++++++++++++++
.../mellanox/mlx5/core/en_accel/ipsec.h | 10 ++++++++
.../mellanox/mlx5/core/en_accel/ipsec_fs.c | 23 +++++++++++++++++++
3 files changed, 56 insertions(+)
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 e84c3400ba1d..7b0d3de0ec6c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -158,6 +158,11 @@ void mlx5e_ipsec_build_accel_xfrm_attrs(struct mlx5e_ipsec_sa_entry *sa_entry,
attrs->family = x->props.family;
attrs->type = x->xso.type;
attrs->reqid = x->props.reqid;
+ attrs->upspec.dport = ntohs(x->sel.dport);
+ attrs->upspec.dport_mask = ntohs(x->sel.dport_mask);
+ attrs->upspec.sport = ntohs(x->sel.sport);
+ attrs->upspec.sport_mask = ntohs(x->sel.sport_mask);
+ attrs->upspec.proto = x->sel.proto;
mlx5e_ipsec_init_limits(sa_entry, attrs);
}
@@ -221,6 +226,13 @@ static int mlx5e_xfrm_validate_state(struct mlx5_core_dev *mdev,
NL_SET_ERR_MSG_MOD(extack, "Cannot offload xfrm states with geniv other than seqiv");
return -EINVAL;
}
+
+ if (x->sel.proto != IPPROTO_IP &&
+ (x->sel.proto != IPPROTO_UDP || x->xso.dir != XFRM_DEV_OFFLOAD_OUT)) {
+ NL_SET_ERR_MSG_MOD(extack, "Device does not support upper protocol other than UDP, and only Tx direction");
+ return -EINVAL;
+ }
+
switch (x->xso.type) {
case XFRM_DEV_OFFLOAD_CRYPTO:
if (!(mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_CRYPTO)) {
@@ -517,6 +529,12 @@ static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x,
return -EINVAL;
}
+ if (x->selector.proto != IPPROTO_IP &&
+ (x->selector.proto != IPPROTO_UDP || x->xdo.dir != XFRM_DEV_OFFLOAD_OUT)) {
+ NL_SET_ERR_MSG_MOD(extack, "Device does not support upper protocol other than UDP, and only Tx direction");
+ return -EINVAL;
+ }
+
return 0;
}
@@ -537,6 +555,11 @@ mlx5e_ipsec_build_accel_pol_attrs(struct mlx5e_ipsec_pol_entry *pol_entry,
attrs->action = x->action;
attrs->type = XFRM_DEV_OFFLOAD_PACKET;
attrs->reqid = x->xfrm_vec[0].reqid;
+ attrs->upspec.dport = ntohs(sel->dport);
+ attrs->upspec.dport_mask = ntohs(sel->dport_mask);
+ attrs->upspec.sport = ntohs(sel->sport);
+ attrs->upspec.sport_mask = ntohs(sel->sport_mask);
+ attrs->upspec.proto = sel->proto;
}
static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
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 8bed9c361075..b387adca9c20 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -52,6 +52,14 @@ struct aes_gcm_keymat {
u32 aes_key[256 / 32];
};
+struct upspec {
+ u16 dport;
+ u16 dport_mask;
+ u16 sport;
+ u16 sport_mask;
+ u8 proto;
+};
+
struct mlx5_accel_esp_xfrm_attrs {
u32 esn;
u32 spi;
@@ -68,6 +76,7 @@ struct mlx5_accel_esp_xfrm_attrs {
__be32 a6[4];
} daddr;
+ struct upspec upspec;
u8 dir : 2;
u8 esn_overlap : 1;
u8 esn_trigger : 1;
@@ -181,6 +190,7 @@ struct mlx5_accel_pol_xfrm_attrs {
__be32 a6[4];
} daddr;
+ struct upspec upspec;
u8 family;
u8 action;
u8 type : 2;
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 9f19f4b59a70..5da6fe68eea6 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
@@ -467,6 +467,27 @@ static void setup_fte_reg_c0(struct mlx5_flow_spec *spec, u32 reqid)
misc_parameters_2.metadata_reg_c_0, reqid);
}
+static void setup_fte_upper_proto_match(struct mlx5_flow_spec *spec, struct upspec *upspec)
+{
+ if (upspec->proto != IPPROTO_UDP)
+ return;
+
+ spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
+ MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, spec->match_criteria, ip_protocol);
+ MLX5_SET(fte_match_set_lyr_2_4, spec->match_value, ip_protocol, upspec->proto);
+ if (upspec->dport) {
+ MLX5_SET(fte_match_set_lyr_2_4, spec->match_criteria, udp_dport,
+ upspec->dport_mask);
+ MLX5_SET(fte_match_set_lyr_2_4, spec->match_value, udp_dport, upspec->dport);
+ }
+
+ if (upspec->sport) {
+ MLX5_SET(fte_match_set_lyr_2_4, spec->match_criteria, udp_dport,
+ upspec->sport_mask);
+ MLX5_SET(fte_match_set_lyr_2_4, spec->match_value, udp_dport, upspec->sport);
+ }
+}
+
static int setup_modify_header(struct mlx5_core_dev *mdev, u32 val, u8 dir,
struct mlx5_flow_act *flow_act)
{
@@ -654,6 +675,7 @@ static int tx_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
setup_fte_addr6(spec, attrs->saddr.a6, attrs->daddr.a6);
setup_fte_no_frags(spec);
+ setup_fte_upper_proto_match(spec, &attrs->upspec);
switch (attrs->type) {
case XFRM_DEV_OFFLOAD_CRYPTO:
@@ -728,6 +750,7 @@ static int tx_add_policy(struct mlx5e_ipsec_pol_entry *pol_entry)
setup_fte_addr6(spec, attrs->saddr.a6, attrs->daddr.a6);
setup_fte_no_frags(spec);
+ setup_fte_upper_proto_match(spec, &attrs->upspec);
err = setup_modify_header(mdev, attrs->reqid, XFRM_DEV_OFFLOAD_OUT,
&flow_act);
--
2.39.1
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