@@ -38,7 +38,7 @@ mlx5_core-$(CONFIG_MLX5_ESWITCH) += en_rep.o lib/geneve.o lib/port_tun.o lag
mlx5_core-$(CONFIG_MLX5_CLS_ACT) += en_tc.o en/rep/tc.o en/rep/neigh.o \
en/mapping.o esw/chains.o en/tc_tun.o \
en/tc_tun_vxlan.o en/tc_tun_gre.o en/tc_tun_geneve.o \
- diag/en_tc_tracepoint.o
+ en/tc_tun_mplsoudp.o diag/en_tc_tracepoint.o
mlx5_core-$(CONFIG_MLX5_TC_CT) += en/tc_ct.o
#
@@ -4,6 +4,7 @@
#include <net/vxlan.h>
#include <net/gre.h>
#include <net/geneve.h>
+#include <net/bareudp.h>
#include "en/tc_tun.h"
#include "en_tc.h"
#include "rep/tc.h"
@@ -18,6 +19,8 @@ struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev)
else if (netif_is_gretap(tunnel_dev) ||
netif_is_ip6gretap(tunnel_dev))
return &gre_tunnel;
+ else if (netif_is_bareudp(tunnel_dev))
+ return &mplsoudp_tunnel;
else
return NULL;
}
@@ -16,6 +16,7 @@ enum {
MLX5E_TC_TUNNEL_TYPE_VXLAN,
MLX5E_TC_TUNNEL_TYPE_GENEVE,
MLX5E_TC_TUNNEL_TYPE_GRETAP,
+ MLX5E_TC_TUNNEL_TYPE_MPLSOUDP,
};
struct mlx5e_tc_tunnel {
@@ -46,6 +47,7 @@ struct mlx5e_tc_tunnel {
extern struct mlx5e_tc_tunnel vxlan_tunnel;
extern struct mlx5e_tc_tunnel geneve_tunnel;
extern struct mlx5e_tc_tunnel gre_tunnel;
+extern struct mlx5e_tc_tunnel mplsoudp_tunnel;
struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev);
new file mode 100644
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/* Copyright (c) 2018 Mellanox Technologies. */
+
+#include <net/bareudp.h>
+#include <net/mpls.h>
+#include "en/tc_tun.h"
+
+static bool can_offload(struct mlx5e_priv *priv)
+{
+ return MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, reformat_l3_tunnel_to_l2);
+}
+
+static int calc_hlen(struct mlx5e_encap_entry *e)
+{
+ return sizeof(struct udphdr) + MPLS_HLEN;
+}
+
+static int init_encap_attr(struct net_device *tunnel_dev,
+ struct mlx5e_priv *priv,
+ struct mlx5e_encap_entry *e,
+ struct netlink_ext_ack *extack)
+{
+ e->tunnel = &mplsoudp_tunnel;
+ e->reformat_type = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
+ return 0;
+}
+
+static inline __be32 mpls_label_id_field(__be32 label, u8 tos, u8 ttl)
+{
+ u32 res;
+
+ /* mpls label is 32 bits long and construction as follows:
+ * 20 bits label
+ * 3 bits tos
+ * 1 bit bottom of stack. Since we support only one label, this bit is
+ * always set.
+ * 8 bits TTL
+ */
+ res = be32_to_cpu(label) << 12 | 1 << 8 | (tos & 7) << 9 | ttl;
+ return cpu_to_be32(res);
+}
+
+static int generate_ip_tun_hdr(char buf[],
+ __u8 *ip_proto,
+ struct mlx5e_encap_entry *r)
+{
+ const struct ip_tunnel_key *tun_key = &r->tun_info->key;
+ __be32 tun_id = tunnel_id_to_key32(tun_key->tun_id);
+ struct udphdr *udp = (struct udphdr *)(buf);
+ struct mpls_shim_hdr *mpls;
+
+ mpls = (struct mpls_shim_hdr *)(udp + 1);
+ *ip_proto = IPPROTO_UDP;
+
+ udp->dest = tun_key->tp_dst;
+ mpls->label_stack_entry = mpls_label_id_field(tun_id, tun_key->tos, tun_key->ttl);
+
+ return 0;
+}
+
+static int parse_udp_ports(struct mlx5e_priv *priv,
+ struct mlx5_flow_spec *spec,
+ struct flow_cls_offload *f,
+ void *headers_c,
+ void *headers_v)
+{
+ return mlx5e_tc_tun_parse_udp_ports(priv, spec, f, headers_c, headers_v);
+}
+
+static int parse_tunnel(struct mlx5e_priv *priv,
+ struct mlx5_flow_spec *spec,
+ struct flow_cls_offload *f,
+ void *headers_c,
+ void *headers_v)
+{
+ return 0;
+}
+
+struct mlx5e_tc_tunnel mplsoudp_tunnel = {
+ .tunnel_type = MLX5E_TC_TUNNEL_TYPE_MPLSOUDP,
+ .match_level = MLX5_MATCH_L4,
+ .can_offload = can_offload,
+ .calc_hlen = calc_hlen,
+ .init_encap_attr = init_encap_attr,
+ .generate_ip_tun_hdr = generate_ip_tun_hdr,
+ .parse_udp_ports = parse_udp_ports,
+ .parse_tunnel = parse_tunnel,
+};
@@ -48,6 +48,7 @@
#include <net/tc_act/tc_csum.h>
#include <net/arp.h>
#include <net/ipv6_stubs.h>
+#include <net/bareudp.h>
#include "en.h"
#include "en_rep.h"
#include "en/rep/tc.h"
@@ -3685,6 +3686,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
bool encap = false, decap = false;
u32 action = attr->action;
int err, i, if_count = 0;
+ bool mpls_push = false;
if (!flow_action_has_entries(flow_action))
return -EINVAL;
@@ -3699,6 +3701,16 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
MLX5_FLOW_CONTEXT_ACTION_COUNT;
break;
+ case FLOW_ACTION_MPLS_PUSH:
+ if (!MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
+ reformat_l2_to_l3_tunnel) ||
+ act->mpls_push.proto != htons(ETH_P_MPLS_UC)) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "mpls push is supported only for mpls_uc protocol");
+ return -EOPNOTSUPP;
+ }
+ mpls_push = true;
+ break;
case FLOW_ACTION_MANGLE:
case FLOW_ACTION_ADD:
err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB,
@@ -3729,6 +3741,12 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
return -EINVAL;
}
+ if (mpls_push && !netif_is_bareudp(out_dev)) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "mpls is supported only through a bareudp device");
+ return -EOPNOTSUPP;
+ }
+
if (ft_flow && out_dev == priv->netdev) {
/* Ignore forward to self rules generated
* by adding both mlx5 devs to the flow table
@@ -144,11 +144,11 @@ static int mlx5_set_entropy(struct mlx5_tun_entropy *tun_entropy,
int mlx5_tun_entropy_refcount_inc(struct mlx5_tun_entropy *tun_entropy,
int reformat_type)
{
- /* the default is error for unknown (non VXLAN/GRE tunnel types) */
int err = -EOPNOTSUPP;
mutex_lock(&tun_entropy->lock);
- if (reformat_type == MLX5_REFORMAT_TYPE_L2_TO_VXLAN &&
+ if ((reformat_type == MLX5_REFORMAT_TYPE_L2_TO_VXLAN ||
+ reformat_type == MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL) &&
tun_entropy->enabled) {
/* in case entropy calculation is enabled for all tunneling
* types, it is ok for VXLAN, so approve.