#include <vnet/dpo/dpo.h>
#include <vnet/fib/fib_table.h>
#include <vppinfra/hash.h>
-
+#include <vppinfra/bihash_8_8.h>
+#include <vppinfra/bihash_24_8.h>
#include <lb/lbhash.h>
#define LB_DEFAULT_PER_CPU_STICKY_BUCKETS 1 << 10
#define LB_DEFAULT_FLOW_TIMEOUT 40
+#define LB_MAPPING_BUCKETS 1024
+#define LB_MAPPING_MEMORY_SIZE 64<<20
typedef enum {
LB_NEXT_DROP,
LB_N_NEXT,
} lb_next_t;
+typedef enum {
+ LB_NAT4_IN2OUT_NEXT_DROP,
+ LB_NAT4_IN2OUT_NEXT_LOOKUP,
+ LB_NAT4_IN2OUT_N_NEXT,
+} LB_nat4_in2out_next_t;
+
+typedef enum {
+ LB_NAT6_IN2OUT_NEXT_DROP,
+ LB_NAT6_IN2OUT_NEXT_LOOKUP,
+ LB_NAT6_IN2OUT_N_NEXT,
+} LB_nat6_in2out_next_t;
+
+#define foreach_lb_nat_in2out_error \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
+_(IN2OUT_PACKETS, "Good in2out packets processed") \
+_(NO_TRANSLATION, "No translation")
+
+typedef enum {
+#define _(sym,str) LB_NAT_IN2OUT_ERROR_##sym,
+ foreach_lb_nat_in2out_error
+#undef _
+ LB_NAT_IN2OUT_N_ERROR,
+} lb_nat_in2out_error_t;
+
+/**
+ * lb for kube-proxy supports three types of service
+ */
+typedef enum {
+ LB_SRV_TYPE_CLUSTERIP,
+ LB_SRV_TYPE_NODEPORT,
+ LB_SRV_N_TYPES,
+} lb_svr_type_t;
+
+typedef enum {
+ LB4_NODEPORT_NEXT_IP4_NAT4,
+ LB4_NODEPORT_NEXT_DROP,
+ LB4_NODEPORT_N_NEXT,
+} lb4_nodeport_next_t;
+
+typedef enum {
+ LB6_NODEPORT_NEXT_IP6_NAT6,
+ LB6_NODEPORT_NEXT_DROP,
+ LB6_NODEPORT_N_NEXT,
+} lb6_nodeport_next_t;
+
/**
* Each VIP is configured with a set of
* application server.
LB_ENCAP_TYPE_GRE4,
LB_ENCAP_TYPE_GRE6,
LB_ENCAP_TYPE_L3DSR,
+ LB_ENCAP_TYPE_NAT4,
+ LB_ENCAP_TYPE_NAT6,
LB_ENCAP_N_TYPES,
} lb_encap_type_t;
/**
* The load balancer supports IPv4 and IPv6 traffic
- * and GRE4, GRE6 and L3DSR encap.
+ * and GRE4, GRE6, L3DSR and NAT4, NAT6 encap.
*/
typedef enum {
LB_VIP_TYPE_IP6_GRE6,
LB_VIP_TYPE_IP4_GRE6,
LB_VIP_TYPE_IP4_GRE4,
LB_VIP_TYPE_IP4_L3DSR,
+ LB_VIP_TYPE_IP4_NAT4,
+ LB_VIP_TYPE_IP6_NAT6,
LB_VIP_N_TYPES,
} lb_vip_type_t;
-
format_function_t format_lb_vip_type;
unformat_function_t unformat_lb_vip_type;
+
+/* args for different vip encap types */
+typedef struct {
+ union
+ {
+ struct
+ {
+ /* Service type. clusterip or nodeport */
+ u8 srv_type;
+
+ /* Service port. network byte order */
+ u16 port;
+
+ /* Pod's port corresponding to specific service. network byte order */
+ u16 target_port;
+
+ /* Node's port, can access service via NodeIP:node_port. network byte order */
+ u16 node_port;
+ };
+ /* DSCP bits for L3DSR */
+ u8 dscp;
+ u64 as_u64;
+ };
+} lb_vip_encap_args_t;
+
/**
* Load balancing service is provided per VIP.
* In this data model, a VIP can be a whole prefix.
*/
lb_vip_type_t type;
- /**
- * DSCP bits for L3DSR
- */
- u8 dscp;
+ /* args for different vip encap types */
+ lb_vip_encap_args_t encap_args;
/**
* Flags related to this VIP.
#define lb_vip_is_ip4(vip) ((vip)->type == LB_VIP_TYPE_IP4_GRE6 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4 \
- || (vip)->type == LB_VIP_TYPE_IP4_L3DSR )
+ || (vip)->type == LB_VIP_TYPE_IP4_L3DSR \
+ || (vip)->type == LB_VIP_TYPE_IP4_NAT4 )
#define lb_vip_is_gre4(vip) ((vip)->type == LB_VIP_TYPE_IP6_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4)
+
#define lb_vip_is_gre6(vip) ((vip)->type == LB_VIP_TYPE_IP6_GRE6 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE6)
-#define lb_vip_is_l3dsr(vip) (vip)->type == LB_VIP_TYPE_IP4_L3DSR
+
+#define lb_vip_is_l3dsr(vip) ((vip)->type == LB_VIP_TYPE_IP4_L3DSR)
+
+#define lb_vip_is_nat4(vip) ((vip)->type == LB_VIP_TYPE_IP4_NAT4)
+
+#define lb_vip_is_nat6(vip) ((vip)->type == LB_VIP_TYPE_IP6_NAT6)
#define lb_encap_is_ip4(vip) ((vip)->type == LB_VIP_TYPE_IP6_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4 \
- || (vip)->type == LB_VIP_TYPE_IP4_L3DSR)
+ || (vip)->type == LB_VIP_TYPE_IP4_L3DSR \
+ || (vip)->type == LB_VIP_TYPE_IP4_NAT4 )
format_function_t format_lb_vip;
format_function_t format_lb_vip_detailed;
+#define foreach_lb_nat_protocol \
+ _(UDP, 0, udp, "udp") \
+ _(TCP, 1, tcp, "tcp")
+
+typedef enum {
+#define _(N, i, n, s) LB_NAT_PROTOCOL_##N = i,
+ foreach_lb_nat_protocol
+#undef _
+} lb_nat_protocol_t;
+
+always_inline u32
+lb_ip_proto_to_nat_proto (u8 ip_proto)
+{
+ u32 nat_proto = ~0;
+
+ nat_proto = (ip_proto == IP_PROTOCOL_UDP) ? LB_NAT_PROTOCOL_UDP : nat_proto;
+ nat_proto = (ip_proto == IP_PROTOCOL_TCP) ? LB_NAT_PROTOCOL_TCP : nat_proto;
+
+ return nat_proto;
+}
+
+/* Key for Pod's egress SNAT */
+typedef struct {
+ union
+ {
+ struct
+ {
+ ip4_address_t addr;
+ u16 port;
+ u16 protocol:3,
+ fib_index:13;
+ };
+ u64 as_u64;
+ };
+} lb_snat4_key_t;
+
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ ip6_address_t addr;
+ u16 port;
+ u16 protocol;
+ u32 fib_index;
+ };
+ u64 as_u64[3];
+ };
+} lb_snat6_key_t;
+
+typedef struct {
+ /**
+ * for vip + port case, src_ip = vip;
+ * for node ip + node_port, src_ip = node_ip
+ */
+ ip46_address_t src_ip;
+ ip46_address_t as_ip;
+ u8 src_ip_is_ipv6;
+ u8 as_ip_is_ipv6;
+ /**
+ * Network byte order
+ * for vip + port case, src_port = port;
+ * for node ip + node_port, src_port = node_port
+ */
+ u16 src_port;
+ u16 target_port; /* Network byte order */
+ u32 vrf_id;
+ u32 fib_index;
+} lb_snat_mapping_t;
+
typedef struct {
/**
* Each CPU has its own sticky flow hash table.
*/
vlib_refcount_t as_refcount;
+ /* hash lookup vip_index by key: {u16: nodeport} */
+ uword * vip_index_by_nodeport;
+
/**
* Some global data is per-cpu
*/
dpo_type_t dpo_gre4_type;
dpo_type_t dpo_gre6_type;
dpo_type_t dpo_l3dsr_type;
+ dpo_type_t dpo_nat4_type;
+ dpo_type_t dpo_nat6_type;
/**
* Node type for registering to fib changes.
*/
fib_node_type_t fib_node_type;
+ /* Find a static mapping by AS IP : target_port */
+ clib_bihash_8_8_t mapping_by_as4;
+ clib_bihash_24_8_t mapping_by_as6;
+
+ /* Static mapping pool */
+ lb_snat_mapping_t * snat_mappings;
+
/**
* API dynamically registered base ID.
*/
u16 msg_id_base;
volatile u32 *writer_lock;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
} lb_main_t;
+/* args for different vip encap types */
+typedef struct {
+ ip46_address_t prefix;
+ u8 plen;
+ lb_vip_type_t type;
+ u32 new_length;
+ lb_vip_encap_args_t encap_args;
+} lb_vip_add_args_t;
+
extern lb_main_t lb_main;
-extern vlib_node_registration_t lb6_node;
extern vlib_node_registration_t lb4_node;
+extern vlib_node_registration_t lb6_node;
+extern vlib_node_registration_t lb4_nodeport_node;
+extern vlib_node_registration_t lb6_nodeport_node;
+extern vlib_node_registration_t lb_nat4_in2out_node;
+extern vlib_node_registration_t lb_nat6_in2out_node;
/**
* Fix global load-balancer parameters.
int lb_conf(ip4_address_t *ip4_address, ip6_address_t *ip6_address,
u32 sticky_buckets, u32 flow_timeout);
-int lb_vip_add(ip46_address_t *prefix, u8 plen, lb_vip_type_t type, u8 dscp,
- u32 new_length, u32 *vip_index);
+int lb_vip_add(lb_vip_add_args_t args, u32 *vip_index);
+
int lb_vip_del(u32 vip_index);
int lb_vip_find_index(ip46_address_t *prefix, u8 plen, u32 *vip_index);
void lb_garbage_collection();
+int lb_nat4_interface_add_del (u32 sw_if_index, int is_del);
+int lb_nat6_interface_add_del (u32 sw_if_index, int is_del);
+
format_function_t format_lb_main;
#endif /* LB_PLUGIN_LB_LB_H_ */
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