[dpdk-dev] [PATCH v2 1/7] net/mlx5: e-switch VXLAN configuration and definitions

[Viacheslav Ovsiienko <viacheslavo@mellanox.com>]

This part of patchset adds configuration changes in makefile and
meson.build for Mellanox MLX5 PMD. Also necessary defenitions
for VXLAN support are made and appropriate data structures
are presented.

Suggested-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/net/mlx5/Makefile        |  80 ++++++++++++++++++
 drivers/net/mlx5/meson.build     |  32 +++++++
 drivers/net/mlx5/mlx5_flow.h     |  11 +++
 drivers/net/mlx5/mlx5_flow_tcf.c | 175 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 298 insertions(+)

diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index 1e9c0b4..fec7779 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -207,6 +207,11 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
 		enum IFLA_PHYS_PORT_NAME \
 		$(AUTOCONF_OUTPUT)
 	$Q sh -- '$<' '$@' \
+		HAVE_IFLA_VXLAN_COLLECT_METADATA \
+		linux/if_link.h \
+		enum IFLA_VXLAN_COLLECT_METADATA \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
 		HAVE_TCA_CHAIN \
 		linux/rtnetlink.h \
 		enum TCA_CHAIN \
@@ -367,6 +372,81 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
 		enum TCA_VLAN_PUSH_VLAN_PRIORITY \
 		$(AUTOCONF_OUTPUT)
 	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_KEY_ID \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_KEY_ID \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV4_SRC \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV4_DST \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV4_DST_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV6_SRC \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV6_DST \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_IPV6_DST_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_UDP_SRC_PORT \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_UDP_DST_PORT \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK \
+		linux/pkt_cls.h \
+		enum TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TC_ACT_TUNNEL_KEY \
+		linux/tc_act/tc_tunnel_key.h \
+		define TCA_ACT_TUNNEL_KEY \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
+		HAVE_TCA_TUNNEL_KEY_ENC_DST_PORT \
+		linux/tc_act/tc_tunnel_key.h \
+		enum TCA_TUNNEL_KEY_ENC_DST_PORT \
+		$(AUTOCONF_OUTPUT)
+	$Q sh -- '$<' '$@' \
 		HAVE_TC_ACT_PEDIT \
 		linux/tc_act/tc_pedit.h \
 		enum TCA_PEDIT_KEY_EX_HDR_TYPE_UDP \
diff --git a/drivers/net/mlx5/meson.build b/drivers/net/mlx5/meson.build
index c192d44..43aabf2 100644
--- a/drivers/net/mlx5/meson.build
+++ b/drivers/net/mlx5/meson.build
@@ -126,6 +126,8 @@ if build
 		'IFLA_PHYS_SWITCH_ID' ],
 		[ 'HAVE_IFLA_PHYS_PORT_NAME', 'linux/if_link.h',
 		'IFLA_PHYS_PORT_NAME' ],
+		[ 'HAVE_IFLA_VXLAN_COLLECT_METADATA', 'linux/if_link.h',
+		'IFLA_VXLAN_COLLECT_METADATA' ],
 		[ 'HAVE_TCA_CHAIN', 'linux/rtnetlink.h',
 		'TCA_CHAIN' ],
 		[ 'HAVE_TCA_FLOWER_ACT', 'linux/pkt_cls.h',
@@ -190,6 +192,36 @@ if build
 		'TC_ACT_GOTO_CHAIN' ],
 		[ 'HAVE_TC_ACT_VLAN', 'linux/tc_act/tc_vlan.h',
 		'TCA_VLAN_PUSH_VLAN_PRIORITY' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_KEY_ID', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_KEY_ID' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV4_SRC' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV4_DST' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV4_DST_MASK' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV6_SRC' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV6_DST' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_IPV6_DST_MASK' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_UDP_SRC_PORT' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_UDP_DST_PORT' ],
+		[ 'HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK', 'linux/pkt_cls.h',
+		'TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK' ],
+		[ 'HAVE_TC_ACT_TUNNEL_KEY', 'linux/tc_act/tc_tunnel_key.h',
+		'TCA_ACT_TUNNEL_KEY' ],
+		[ 'HAVE_TCA_TUNNEL_KEY_ENC_DST_PORT', 'linux/tc_act/tc_tunnel_key.h',
+		'TCA_TUNNEL_KEY_ENC_DST_PORT' ],
 		[ 'HAVE_TC_ACT_PEDIT', 'linux/tc_act/tc_pedit.h',
 		'TCA_PEDIT_KEY_EX_HDR_TYPE_UDP' ],
 		[ 'HAVE_RDMA_NL_NLDEV', 'rdma/rdma_netlink.h',
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 840d645..b838ab0 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -85,6 +85,8 @@
 #define MLX5_FLOW_ACTION_SET_TP_SRC (1u << 15)
 #define MLX5_FLOW_ACTION_SET_TP_DST (1u << 16)
 #define MLX5_FLOW_ACTION_JUMP (1u << 17)
+#define MLX5_ACTION_VXLAN_ENCAP (1u << 11)
+#define MLX5_ACTION_VXLAN_DECAP (1u << 12)
 
 #define MLX5_FLOW_FATE_ACTIONS \
 	(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | MLX5_FLOW_ACTION_RSS)
@@ -182,8 +184,17 @@ struct mlx5_flow_dv {
 struct mlx5_flow_tcf {
 	struct nlmsghdr *nlh;
 	struct tcmsg *tcm;
+	uint32_t nlsize; /**< Size of NL message buffer. */
+	uint32_t applied:1; /**< Whether rule is currently applied. */
+	uint64_t item_flags; /**< Item flags. */
+	uint64_t action_flags; /**< Action flags. */
 	uint64_t hits;
 	uint64_t bytes;
+	union { /**< Tunnel encap/decap descriptor. */
+		struct mlx5_flow_tcf_tunnel_hdr *tunnel;
+		struct mlx5_flow_tcf_vxlan_decap *vxlan_decap;
+		struct mlx5_flow_tcf_vxlan_encap *vxlan_encap;
+	};
 };
 
 /* Verbs specification header. */
diff --git a/drivers/net/mlx5/mlx5_flow_tcf.c b/drivers/net/mlx5/mlx5_flow_tcf.c
index 5c46f35..8f9c78a 100644
--- a/drivers/net/mlx5/mlx5_flow_tcf.c
+++ b/drivers/net/mlx5/mlx5_flow_tcf.c
@@ -54,6 +54,37 @@ struct tc_vlan {
 
 #endif /* HAVE_TC_ACT_VLAN */
 
+#ifdef HAVE_TC_ACT_TUNNEL_KEY
+
+#include <linux/tc_act/tc_tunnel_key.h>
+
+#ifndef HAVE_TCA_TUNNEL_KEY_ENC_DST_PORT
+#define TCA_TUNNEL_KEY_ENC_DST_PORT 9
+#endif
+
+#else /* HAVE_TC_ACT_TUNNEL_KEY */
+
+#define TCA_ACT_TUNNEL_KEY 17
+#define TCA_TUNNEL_KEY_ACT_SET 1
+#define TCA_TUNNEL_KEY_ACT_RELEASE 2
+#define TCA_TUNNEL_KEY_PARMS 2
+#define TCA_TUNNEL_KEY_ENC_IPV4_SRC 3
+#define TCA_TUNNEL_KEY_ENC_IPV4_DST 4
+#define TCA_TUNNEL_KEY_ENC_IPV6_SRC 5
+#define TCA_TUNNEL_KEY_ENC_IPV6_DST 6
+#define TCA_TUNNEL_KEY_ENC_KEY_ID 7
+#define TCA_TUNNEL_KEY_ENC_DST_PORT 9
+#define TCA_TUNNEL_KEY_NO_CSUM 10
+
+struct tc_tunnel_key {
+	tc_gen;
+	int t_action;
+};
+
+#endif /* HAVE_TC_ACT_TUNNEL_KEY */
+
+
+
 #ifdef HAVE_TC_ACT_PEDIT
 
 #include <linux/tc_act/tc_pedit.h>
@@ -210,6 +241,45 @@ struct tc_pedit_sel {
 #ifndef HAVE_TCA_FLOWER_KEY_VLAN_ETH_TYPE
 #define TCA_FLOWER_KEY_VLAN_ETH_TYPE 25
 #endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_KEY_ID
+#define TCA_FLOWER_KEY_ENC_KEY_ID 26
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC
+#define TCA_FLOWER_KEY_ENC_IPV4_SRC 27
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
+#define TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK 28
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST
+#define TCA_FLOWER_KEY_ENC_IPV4_DST 29
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
+#define TCA_FLOWER_KEY_ENC_IPV4_DST_MASK 30
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC
+#define TCA_FLOWER_KEY_ENC_IPV6_SRC 31
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
+#define TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK 32
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST
+#define TCA_FLOWER_KEY_ENC_IPV6_DST 33
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
+#define TCA_FLOWER_KEY_ENC_IPV6_DST_MASK 34
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
+#define TCA_FLOWER_KEY_ENC_UDP_SRC_PORT 43
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
+#define TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK 44
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT
+#define TCA_FLOWER_KEY_ENC_UDP_DST_PORT 45
+#endif
+#ifndef HAVE_TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
+#define TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK 46
+#endif
 #ifndef HAVE_TCA_FLOWER_KEY_TCP_FLAGS
 #define TCA_FLOWER_KEY_TCP_FLAGS 71
 #endif
@@ -232,6 +302,111 @@ struct tc_pedit_sel {
 #define TP_PORT_LEN 2 /* Transport Port (UDP/TCP) Length */
 #endif
 
+#define MLX5_VXLAN_PORT_RANGE_MIN 30000
+#define MLX5_VXLAN_PORT_RANGE_MAX 60000
+#define MLX5_VXLAN_DEVICE_PFX "vmlx_"
+
+/** Tunnel action type, used for @p type in header structure. */
+enum mlx5_flow_tcf_tunact_type {
+	MLX5_FLOW_TCF_TUNACT_VXLAN_ENCAP,
+	MLX5_FLOW_TCF_TUNACT_VXLAN_DECAP,
+};
+
+/** Flags used for @p mask in tunnel action encap descriptors. */
+#define	MLX5_FLOW_TCF_ENCAP_ETH_SRC (1u << 0)
+#define	MLX5_FLOW_TCF_ENCAP_ETH_DST (1u << 1)
+#define	MLX5_FLOW_TCF_ENCAP_IPV4_SRC (1u << 2)
+#define	MLX5_FLOW_TCF_ENCAP_IPV4_DST (1u << 3)
+#define	MLX5_FLOW_TCF_ENCAP_IPV6_SRC (1u << 4)
+#define	MLX5_FLOW_TCF_ENCAP_IPV6_DST (1u << 5)
+#define	MLX5_FLOW_TCF_ENCAP_UDP_SRC (1u << 6)
+#define	MLX5_FLOW_TCF_ENCAP_UDP_DST (1u << 7)
+#define	MLX5_FLOW_TCF_ENCAP_VXLAN_VNI (1u << 8)
+
+/** Neigh rule structure */
+struct tcf_neigh_rule {
+	LIST_ENTRY(tcf_neigh_rule) next;
+	uint32_t refcnt;
+	struct ether_addr eth;
+	uint16_t mask;
+	union {
+		struct {
+			rte_be32_t dst;
+		} ipv4;
+		struct {
+			uint8_t dst[16];
+		} ipv6;
+	};
+};
+
+/** Local rule structure */
+struct tcf_local_rule {
+	LIST_ENTRY(tcf_neigh_rule) next;
+	uint32_t refcnt;
+	uint16_t mask;
+	union {
+		struct {
+			rte_be32_t dst;
+			rte_be32_t src;
+		} ipv4;
+		struct {
+			uint8_t dst[16];
+			uint8_t src[16];
+		} ipv6;
+	};
+};
+
+/** VXLAN virtual netdev. */
+struct mlx5_flow_tcf_vtep {
+	LIST_ENTRY(mlx5_flow_tcf_vtep) next;
+	LIST_HEAD(, tcf_neigh_rule) neigh;
+	LIST_HEAD(, tcf_local_rule) local;
+	uint32_t refcnt;
+	unsigned int ifindex; /**< Own interface index. */
+	unsigned int ifouter; /**< Index of device attached to. */
+	uint16_t port;
+	uint8_t created;
+};
+
+/** Tunnel descriptor header, common for all tunnel types. */
+struct mlx5_flow_tcf_tunnel_hdr {
+	uint32_t type; /**< Tunnel action type. */
+	unsigned int ifindex_tun; /**< Tunnel endpoint interface. */
+	unsigned int ifindex_org; /**< Original dst/src interface */
+	unsigned int *ifindex_ptr; /**< Interface ptr in message. */
+};
+
+struct mlx5_flow_tcf_vxlan_decap {
+	struct mlx5_flow_tcf_tunnel_hdr hdr;
+	uint16_t udp_port;
+};
+
+struct mlx5_flow_tcf_vxlan_encap {
+	struct mlx5_flow_tcf_tunnel_hdr hdr;
+	uint32_t mask;
+	struct {
+		struct ether_addr dst;
+		struct ether_addr src;
+	} eth;
+	union {
+		struct {
+			rte_be32_t dst;
+			rte_be32_t src;
+		} ipv4;
+		struct {
+			uint8_t dst[16];
+			uint8_t src[16];
+		} ipv6;
+	};
+struct {
+		rte_be16_t src;
+		rte_be16_t dst;
+	} udp;
+	struct {
+		uint8_t vni[3];
+	} vxlan;
+};
+
 /**
  * Structure for holding netlink context.
  * Note the size of the message buffer which is MNL_SOCKET_BUFFER_SIZE.
-- 
1.8.3.1