2 * Copyright (c) 2017-2020 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #ifndef __included_udp_h__
16 #define __included_udp_h__
18 #include <vnet/vnet.h>
19 #include <vnet/udp/udp_inlines.h>
20 #include <vnet/udp/udp_local.h>
21 #include <vnet/udp/udp_packet.h>
22 #include <vnet/ip/ip4_packet.h>
23 #include <vnet/ip/format.h>
25 #include <vnet/ip/ip.h>
26 #include <vnet/session/transport.h>
30 #define udp_error(f, n, s, d) UDP_ERROR_##f,
31 #include <vnet/udp/udp_error.def>
36 #define foreach_udp_connection_flag \
37 _(CONNECTED, "CONNECTED") /**< connected mode */ \
38 _(OWNS_PORT, "OWNS_PORT") /**< port belong to conn (UDPC) */ \
39 _(CLOSING, "CLOSING") /**< conn closed with data */ \
40 _(LISTEN, "LISTEN") /**< conn is listening */ \
41 _(MIGRATED, "MIGRATED") /**< cloned to another thread */ \
43 enum udp_conn_flags_bits
45 #define _(sym, str) UDP_CONN_F_BIT_##sym,
46 foreach_udp_connection_flag
51 typedef enum udp_conn_flags_
53 #define _(sym, str) UDP_CONN_F_##sym = 1 << UDP_CONN_F_BIT_##sym,
54 foreach_udp_connection_flag
58 #define foreach_udp_cfg_flag _ (NO_CSUM_OFFLOAD, "no-csum-offload")
60 typedef enum udp_cfg_flag_bits_
62 #define _(sym, str) UDP_CFG_F_##sym##_BIT,
66 } udp_cfg_flag_bits_e;
68 typedef enum udp_cfg_flag_
70 #define _(sym, str) UDP_CFG_F_##sym = 1 << UDP_CFG_F_##sym##_BIT,
74 } __clib_packed udp_cfg_flags_t;
78 /** Required for pool_get_aligned */
79 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
80 transport_connection_t connection; /**< must be first */
81 clib_spinlock_t rx_lock; /**< rx fifo lock */
82 u8 flags; /**< connection flags */
83 udp_cfg_flags_t cfg_flags; /**< configuration flags */
84 u16 mss; /**< connection mss */
85 u32 sw_if_index; /**< connection sw_if_index */
86 u32 next_node_index; /**< Can be used to control next node in output */
87 u32 next_node_opaque; /**< Opaque to pass to next node */
90 #define udp_csum_offload(uc) (!((uc)->cfg_flags & UDP_CFG_F_NO_CSUM_OFFLOAD))
94 /* Name (a c string). */
97 /* Port number in host byte order. */
98 udp_dst_port_t dst_port;
100 /* Node which handles this type. */
103 /* Next index for this type. */
106 /* UDP sessions refcount (not tunnels) */
109 /* Parser for packet generator edits for this protocol */
110 unformat_function_t *unformat_pg_edit;
111 } udp_dst_port_info_t;
116 UDP_IP4, /* the code is full of is_ip4... */
122 udp_dst_port_info_t *dst_port_infos[N_UDP_AF];
124 /* Hash tables mapping name/protocol to protocol info index. */
125 uword *dst_port_info_by_name[N_UDP_AF];
126 uword *dst_port_info_by_dst_port[N_UDP_AF];
128 /* Sparse vector mapping udp dst_port in network byte order
130 u16 *next_by_dst_port4;
131 u16 *next_by_dst_port6;
135 /* Udp local to input arc index */
136 u32 local_to_input_edge[N_UDP_AF];
139 * Per-worker thread udp connection pools used with session layer
141 udp_connection_t **connections;
142 udp_connection_t *listener_pool;
148 u8 icmp_send_unreachable_disabled;
151 extern udp_main_t udp_main;
152 extern vlib_node_registration_t udp4_input_node;
153 extern vlib_node_registration_t udp6_input_node;
154 extern vlib_node_registration_t udp4_local_node;
155 extern vlib_node_registration_t udp6_local_node;
156 extern vlib_node_registration_t udp4_output_node;
157 extern vlib_node_registration_t udp6_output_node;
159 void udp_add_dst_port (udp_main_t * um, udp_dst_port_t dst_port,
160 char *dst_port_name, u8 is_ip4);
162 always_inline udp_connection_t *
163 udp_connection_get (u32 conn_index, u32 thread_index)
165 if (pool_is_free_index (udp_main.connections[thread_index], conn_index))
167 return pool_elt_at_index (udp_main.connections[thread_index], conn_index);
170 always_inline udp_connection_t *
171 udp_listener_get (u32 conn_index)
173 return pool_elt_at_index (udp_main.listener_pool, conn_index);
176 always_inline udp_main_t *
182 always_inline udp_connection_t *
183 udp_connection_from_transport (transport_connection_t * tc)
185 return ((udp_connection_t *) tc);
188 void udp_connection_free (udp_connection_t * uc);
189 udp_connection_t *udp_connection_alloc (u32 thread_index);
191 always_inline udp_connection_t *
192 udp_connection_clone_safe (u32 connection_index, u32 thread_index)
194 u32 current_thread_index = vlib_get_thread_index (), new_index;
195 udp_connection_t *old_c, *new_c;
197 new_c = udp_connection_alloc (current_thread_index);
198 new_index = new_c->c_c_index;
199 /* Connection pool always realloced with barrier */
200 old_c = udp_main.connections[thread_index] + connection_index;
201 clib_memcpy_fast (new_c, old_c, sizeof (*new_c));
202 old_c->flags |= UDP_CONN_F_MIGRATED;
203 new_c->c_thread_index = current_thread_index;
204 new_c->c_c_index = new_index;
205 new_c->c_fib_index = old_c->c_fib_index;
206 /* Assume cloned sessions don't need lock */
211 always_inline udp_dst_port_info_t *
212 udp_get_dst_port_info (udp_main_t * um, udp_dst_port_t dst_port, u8 is_ip4)
214 uword *p = hash_get (um->dst_port_info_by_dst_port[is_ip4], dst_port);
215 return p ? vec_elt_at_index (um->dst_port_infos[is_ip4], p[0]) : 0;
218 format_function_t format_udp_header;
219 format_function_t format_udp_rx_trace;
220 format_function_t format_udp_connection;
221 unformat_function_t unformat_udp_header;
222 unformat_function_t unformat_udp_port;
224 void udp_connection_share_port (u16 lcl_port, u8 is_ip4);
226 void udp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add);
229 * fd.io coding-style-patch-verification: ON
232 * eval: (c-set-style "gnu")
236 #endif /* __included_udp_h__ */