X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.h;h=fd7ec3b14342ecabf7081ed37be557c82742b169;hb=8a10c7351b35ab8405c2a9b030dba74a4da28f30;hp=c9139b352007bbf3d9b56c759ec5616290462735;hpb=e69e423743630b52e13db58c3f0229df8a46c07f;p=vpp.git diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index c9139b35200..fd7ec3b1434 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -23,6 +23,8 @@ #include #include #include +#include +#include #include #include #include @@ -42,6 +44,42 @@ /* NAT buffer flags */ #define SNAT_FLAG_HAIRPINNING (1 << 0) +typedef struct +{ + u32 arc_next; +} nat_buffer_opaque_t; + +typedef enum +{ + NAT_NEXT_DROP, + NAT_NEXT_ICMP_ERROR, + NAT_NEXT_IN2OUT_PRE, + NAT_NEXT_OUT2IN_PRE, + NAT_NEXT_IN2OUT_ED_FAST_PATH, + NAT_NEXT_IN2OUT_ED_SLOW_PATH, + NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH, + NAT_NEXT_OUT2IN_ED_FAST_PATH, + NAT_NEXT_OUT2IN_ED_SLOW_PATH, + NAT_N_NEXT, +} nat_next_t; + +typedef struct +{ + u32 next_index; +} nat_pre_trace_t; + +#define nat_buffer_opaque(b) \ + ((nat_buffer_opaque_t *)((vnet_buffer_opaque2_t *)b->opaque2)->__unused2) + +/* +STATIC_ASSERT (sizeof (nat_buffer_opaque_t) <= + STRUCT_SIZE_OF (vnet_buffer_opaque_t, unused), + "Custom meta-data too large for vnet_buffer_opaque_t"); + +#define nat_buffer_opaque(b) \ + ((nat_buffer_opaque_t *)((u8 *)((b)->opaque) + \ + STRUCT_OFFSET_OF (vnet_buffer_opaque_t, unused)))*/ + /* session key (4-tuple) */ typedef struct { @@ -110,6 +148,24 @@ typedef struct u8 cached; } nat44_reass_trace_t; +/* NAT API Configuration flags */ +#define foreach_nat_config_flag \ + _(0x01, IS_TWICE_NAT) \ + _(0x02, IS_SELF_TWICE_NAT) \ + _(0x04, IS_OUT2IN_ONLY) \ + _(0x08, IS_ADDR_ONLY) \ + _(0x10, IS_OUTSIDE) \ + _(0x20, IS_INSIDE) \ + _(0x40, IS_STATIC) \ + _(0x80, IS_EXT_HOST_VALID) \ + +typedef enum nat_config_flags_t_ +{ +#define _(n,f) NAT_API_##f = n, + foreach_nat_config_flag +#undef _ +} nat_config_flags_t; + /* External address and port allocation modes */ #define foreach_nat_addr_and_port_alloc_alg \ _(0, DEFAULT, "default") \ @@ -158,6 +214,60 @@ typedef enum #undef _ } snat_session_state_t; +#define foreach_nat_in2out_ed_error \ +_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ +_(IN2OUT_PACKETS, "good in2out packets processed") \ +_(OUT_OF_PORTS, "out of ports") \ +_(BAD_ICMP_TYPE, "unsupported ICMP type") \ +_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ +_(DROP_FRAGMENT, "drop fragment") \ +_(MAX_REASS, "maximum reassemblies exceeded") \ +_(MAX_FRAG, "maximum fragments per reassembly exceeded")\ +_(NON_SYN, "non-SYN packet try to create session") \ +_(TCP_PACKETS, "TCP packets") \ +_(UDP_PACKETS, "UDP packets") \ +_(ICMP_PACKETS, "ICMP packets") \ +_(OTHER_PACKETS, "other protocol packets") \ +_(FRAGMENTS, "fragments") \ +_(CACHED_FRAGMENTS, "cached fragments") \ +_(PROCESSED_FRAGMENTS, "processed fragments") + +typedef enum +{ +#define _(sym,str) NAT_IN2OUT_ED_ERROR_##sym, + foreach_nat_in2out_ed_error +#undef _ + NAT_IN2OUT_ED_N_ERROR, +} nat_in2out_ed_error_t; + +#define foreach_nat_out2in_ed_error \ +_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ +_(OUT2IN_PACKETS, "good out2in packets processed") \ +_(OUT_OF_PORTS, "out of ports") \ +_(BAD_ICMP_TYPE, "unsupported ICMP type") \ +_(NO_TRANSLATION, "no translation") \ +_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ +_(DROP_FRAGMENT, "drop fragment") \ +_(MAX_REASS, "maximum reassemblies exceeded") \ +_(MAX_FRAG, "maximum fragments per reassembly exceeded")\ +_(NON_SYN, "non-SYN packet try to create session") \ +_(TCP_PACKETS, "TCP packets") \ +_(UDP_PACKETS, "UDP packets") \ +_(ICMP_PACKETS, "ICMP packets") \ +_(OTHER_PACKETS, "other protocol packets") \ +_(FRAGMENTS, "fragments") \ +_(CACHED_FRAGMENTS, "cached fragments") \ +_(PROCESSED_FRAGMENTS, "processed fragments") + +typedef enum +{ +#define _(sym,str) NAT_OUT2IN_ED_ERROR_##sym, + foreach_nat_out2in_ed_error +#undef _ + NAT_OUT2IN_ED_N_ERROR, +} nat_out2in_ed_error_t; + + /* Endpoint dependent TCP session state */ #define NAT44_SES_I2O_FIN 1 #define NAT44_SES_O2I_FIN 2 @@ -206,6 +316,9 @@ typedef CLIB_PACKED(struct /* Last heard timer */ f64 last_heard; + /* Last HA refresh */ + f64 ha_last_refreshed; + /* Counters */ u64 total_bytes; u32 total_pkts; @@ -400,6 +513,12 @@ typedef struct /* NAT thread index */ u32 snat_thread_index; + + /* real thread index */ + u32 thread_index; + + /* discovered minimum session timeout time */ + u64 min_session_timeout; } snat_main_per_thread_data_t; struct snat_main_s; @@ -415,8 +534,14 @@ typedef u32 (snat_icmp_match_function_t) (struct snat_main_s * sm, void *e); /* Return worker thread index for given packet */ -typedef u32 (snat_get_worker_function_t) (ip4_header_t * ip, - u32 rx_fib_index); +typedef u32 (snat_get_worker_in2out_function_t) (ip4_header_t * ip, + u32 rx_fib_index, + u8 is_output); + +typedef u32 (snat_get_worker_out2in_function_t) (vlib_buffer_t * b, + ip4_header_t * ip, + u32 rx_fib_index, + u8 is_output); /* NAT address and port allacotaion function */ typedef int (nat_alloc_out_addr_and_port_function_t) (snat_address_t * @@ -437,8 +562,8 @@ typedef struct snat_main_s u32 num_workers; u32 first_worker_index; u32 *workers; - snat_get_worker_function_t *worker_in2out_cb; - snat_get_worker_function_t *worker_out2in_cb; + snat_get_worker_in2out_function_t *worker_in2out_cb; + snat_get_worker_out2in_function_t *worker_out2in_cb; u16 port_per_thread; u32 num_snat_thread; @@ -496,21 +621,26 @@ typedef struct snat_main_s /* node indexes */ u32 error_node_index; + /* handoff fq nodes */ + u32 handoff_out2in_index; + u32 handoff_in2out_index; + u32 handoff_in2out_output_index; + + /* respect feature arc nodes */ + u32 pre_out2in_node_index; + u32 pre_in2out_node_index; + u32 in2out_node_index; u32 in2out_output_node_index; u32 in2out_fast_node_index; u32 in2out_slowpath_node_index; u32 in2out_slowpath_output_node_index; - u32 in2out_reass_node_index; u32 ed_in2out_node_index; u32 ed_in2out_slowpath_node_index; - u32 ed_in2out_reass_node_index; u32 out2in_node_index; u32 out2in_fast_node_index; - u32 out2in_reass_node_index; u32 ed_out2in_node_index; u32 ed_out2in_slowpath_node_index; - u32 ed_out2in_reass_node_index; u32 det_in2out_node_index; u32 det_out2in_node_index; @@ -547,9 +677,9 @@ typedef struct snat_main_s /* values of various timeouts */ u32 udp_timeout; - u32 tcp_established_timeout; - u32 tcp_transitory_timeout; u32 icmp_timeout; + u32 tcp_transitory_timeout; + u32 tcp_established_timeout; /* TCP MSS clamping */ u16 mss_clamping; @@ -564,6 +694,8 @@ typedef struct snat_main_s /* log class */ vlib_log_class_t log_class; + /* logging level */ + u8 log_level; /* convenience */ vlib_main_t *vlib_main; @@ -586,6 +718,12 @@ typedef struct } snat_runtime_t; extern snat_main_t snat_main; + +// nat pre ed next_node feature classification +extern vlib_node_registration_t nat_default_node; +extern vlib_node_registration_t nat_pre_in2out_node; +extern vlib_node_registration_t nat_pre_out2in_node; + extern vlib_node_registration_t snat_in2out_node; extern vlib_node_registration_t snat_in2out_output_node; extern vlib_node_registration_t snat_out2in_node; @@ -607,6 +745,9 @@ extern vlib_node_registration_t nat44_ed_in2out_worker_handoff_node; extern vlib_node_registration_t nat44_ed_in2out_output_worker_handoff_node; extern vlib_node_registration_t nat44_ed_out2in_worker_handoff_node; +extern fib_source_t nat_fib_src_hi; +extern fib_source_t nat_fib_src_low; + /* format functions */ format_function_t format_snat_user; format_function_t format_snat_static_mapping; @@ -617,7 +758,6 @@ format_function_t format_snat_key; format_function_t format_static_mapping_key; format_function_t format_snat_protocol; format_function_t format_nat_addr_and_port_alloc_alg; -format_function_t format_nat44_reass_trace; /* unformat functions */ unformat_function_t unformat_snat_protocol; @@ -709,7 +849,11 @@ unformat_function_t unformat_snat_protocol; @param t TCP header @return 1 if client initiating TCP connection */ -#define tcp_is_init(t) ((t->flags & TCP_FLAG_SYN) && !(t->flags & TCP_FLAG_ACK)) +always_inline bool +tcp_flags_is_init (u8 f) +{ + return (f & TCP_FLAG_SYN) && !(f & TCP_FLAG_ACK); +} /* logging */ #define nat_log_err(...) \ @@ -723,6 +867,184 @@ unformat_function_t unformat_snat_protocol; #define nat_log_debug(...)\ vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__) +/* NAT API Logging Levels */ +#define foreach_nat_log_level \ + _(0x00, LOG_NONE) \ + _(0x01, LOG_ERROR) \ + _(0x02, LOG_WARNING) \ + _(0x03, LOG_NOTICE) \ + _(0x04, LOG_INFO) \ + _(0x05, LOG_DEBUG) + +typedef enum nat_log_level_t_ +{ +#define _(n,f) SNAT_##f = n, + foreach_nat_log_level +#undef _ +} nat_log_level_t; + +#define nat_elog(_level, _str) \ +do \ + { \ + snat_main_t *sm = &snat_main; \ + if (PREDICT_FALSE (sm->log_level >= _level)) \ + { \ + ELOG_TYPE_DECLARE (e) = \ + { \ + .format = "nat-msg " _str, \ + .format_args = "", \ + }; \ + ELOG_DATA (&sm->vlib_main->elog_main, e); \ + } \ + } while (0); + +#define nat_elog_addr(_level, _str, _addr) \ +do \ + { \ + if (PREDICT_FALSE (sm->log_level >= _level)) \ + { \ + ELOG_TYPE_DECLARE (e) = \ + { \ + .format = "nat-msg " _str " %d.%d.%d.%d", \ + .format_args = "i1i1i1i1", \ + }; \ + CLIB_PACKED(struct \ + { \ + u8 oct1; \ + u8 oct2; \ + u8 oct3; \ + u8 oct4; \ + }) *ed; \ + ed = ELOG_DATA (&vlib_global_main.elog_main, e); \ + ed->oct4 = _addr >> 24; \ + ed->oct3 = _addr >> 16; \ + ed->oct2 = _addr >> 8; \ + ed->oct1 = _addr; \ + } \ + } while (0); + +#define nat_elog_debug_handoff(_str, _tid, _fib, _src, _dst) \ +do \ + { \ + if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG)) \ + { \ + ELOG_TYPE_DECLARE (e) = \ + { \ + .format = "nat-msg " _str " ip src: %d.%d.%d.%d dst: %d.%d.%d.%d" \ + " tid from: %d to: %d fib: %d", \ + .format_args = "i1i1i1i1i1i1i1i1i4i4i4", \ + }; \ + CLIB_PACKED(struct \ + { \ + u8 src_oct1; \ + u8 src_oct2; \ + u8 src_oct3; \ + u8 src_oct4; \ + u8 dst_oct1; \ + u8 dst_oct2; \ + u8 dst_oct3; \ + u8 dst_oct4; \ + u32 ftid; \ + u32 ttid; \ + u32 fib; \ + }) *ed; \ + ed = ELOG_DATA (&vlib_global_main.elog_main, e); \ + ed->src_oct1 = _src >> 24; \ + ed->src_oct2 = _src >> 16; \ + ed->src_oct3 = _src >> 8; \ + ed->src_oct4 = _src; \ + ed->dst_oct1 = _dst >> 24; \ + ed->dst_oct2 = _dst >> 16; \ + ed->dst_oct3 = _dst >> 8; \ + ed->dst_oct4 = _dst; \ + ed->ftid = vlib_get_thread_index (); \ + ed->ttid = _tid; \ + ed->fib = _fib; \ + } \ + } while (0); + +#define nat_elog_debug_handoff_v2(_str, _prt, _fib, _src, _dst) \ +do \ + { \ + if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG)) \ + { \ + ELOG_TYPE_DECLARE (e) = \ + { \ + .format = "nat-msg " _str " ip_src:%d.%d.%d.%d ip_dst:%d.%d.%d.%d" \ + " tid:%d prt:%d fib:%d", \ + .format_args = "i1i1i1i1i1i1i1i1i4i4i4", \ + }; \ + CLIB_PACKED(struct \ + { \ + u8 src_oct1; \ + u8 src_oct2; \ + u8 src_oct3; \ + u8 src_oct4; \ + u8 dst_oct1; \ + u8 dst_oct2; \ + u8 dst_oct3; \ + u8 dst_oct4; \ + u32 tid; \ + u32 prt; \ + u32 fib; \ + }) *ed; \ + ed = ELOG_DATA (&vlib_global_main.elog_main, e); \ + ed->src_oct1 = _src >> 24; \ + ed->src_oct2 = _src >> 16; \ + ed->src_oct3 = _src >> 8; \ + ed->src_oct4 = _src; \ + ed->dst_oct1 = _dst >> 24; \ + ed->dst_oct2 = _dst >> 16; \ + ed->dst_oct3 = _dst >> 8; \ + ed->dst_oct4 = _dst; \ + ed->tid = vlib_get_thread_index (); \ + ed->prt = _prt; \ + ed->fib = _fib; \ + } \ + } while (0); + +#define nat_elog_X1(_level, _fmt, _arg, _val1) \ +do \ + { \ + snat_main_t *sm = &snat_main; \ + if (PREDICT_FALSE (sm->log_level >= _level)) \ + { \ + ELOG_TYPE_DECLARE (e) = \ + { \ + .format = "nat-msg " _fmt, \ + .format_args = _arg, \ + }; \ + CLIB_PACKED(struct \ + { \ + typeof (_val1) val1; \ + }) *ed; \ + ed = ELOG_DATA (&sm->vlib_main->elog_main, e); \ + ed->val1 = _val1; \ + } \ + } while (0); + +#define nat_elog_notice(nat_elog_str) \ + nat_elog(SNAT_LOG_INFO, "[notice] " nat_elog_str) +#define nat_elog_warn(nat_elog_str) \ + nat_elog(SNAT_LOG_WARNING, "[warning] " nat_elog_str) +#define nat_elog_err(nat_elog_str) \ + nat_elog(SNAT_LOG_ERROR, "[error] " nat_elog_str) +#define nat_elog_debug(nat_elog_str) \ + nat_elog(SNAT_LOG_DEBUG, "[debug] " nat_elog_str) +#define nat_elog_info(nat_elog_str) \ + nat_elog(SNAT_LOG_INFO, "[info] " nat_elog_str) + +#define nat_elog_notice_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \ + nat_elog_X1(SNAT_LOG_NOTICE, "[notice] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) +#define nat_elog_warn_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \ + nat_elog_X1(SNAT_LOG_WARNING, "[warning] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) +#define nat_elog_err_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \ + nat_elog_X1(SNAT_LOG_ERROR, "[error] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) +#define nat_elog_debug_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \ + nat_elog_X1(SNAT_LOG_DEBUG, "[debug] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) +#define nat_elog_info_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \ + nat_elog_X1(SNAT_LOG_INFO, "[info] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) + /* ICMP session match functions */ u32 icmp_match_in2out_fast (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, @@ -800,11 +1122,6 @@ int nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg); int nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg); int nat44_o2i_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg); -/** - * @brief Increment IPv4 address - */ -void increment_v4_address (ip4_address_t * a); - /** * @brief Add external address to NAT44 pool * @@ -944,7 +1261,7 @@ int snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del, * @param port L4 port number * @param proto L4 protocol * @param vrf_id VRF ID - * @param is_in 1 = inside network addres and por pair, 0 = outside + * @param is_in 1 = inside network address and port pair, 0 = outside * * @return 0 on success, non-zero value otherwise */ @@ -958,7 +1275,7 @@ int nat44_del_session (snat_main_t * sm, ip4_address_t * addr, u16 port, * @param port L4 port number * @param proto L4 protocol * @param vrf_id VRF ID - * @param is_in 1 = inside network addres and por pair, 0 = outside + * @param is_in 1 = inside network address and port pair, 0 = outside * * @return 0 on success, non-zero value otherwise */ @@ -971,9 +1288,10 @@ int nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port, * * @param s NAT session * @param thread_index thread index + * @param is_ha is HA event */ void nat_free_session_data (snat_main_t * sm, snat_session_t * s, - u32 thread_index); + u32 thread_index, u8 is_ha); /** * @brief Find or create NAT user @@ -997,7 +1315,7 @@ snat_user_t *nat_user_get_or_create (snat_main_t * sm, ip4_address_t * addr, */ snat_session_t *nat_session_alloc_or_recycle (snat_main_t * sm, snat_user_t * u, - u32 thread_index); + u32 thread_index, f64 now); /** * @brief Allocate NAT endpoint-dependent session @@ -1038,7 +1356,7 @@ void nat_set_alloc_addr_and_port_default (void); * * @param addresses vector of outside addresses * @param thread_index thread index - * @param k adddress, port and protocol + * @param k address, port and protocol */ void snat_free_outside_address_and_port (snat_address_t * addresses, u32 thread_index, @@ -1102,7 +1420,6 @@ int snat_static_mapping_match (snat_main_t * sm, void snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, int is_add); - /* * Why is this here? Because we don't need to touch this layer to * simply reply to an icmp. We need to change id to a unique