1 /* SPDX-License-Identifier: Apache-2.0
2 * Copyright(c) 2022 Cisco Systems, Inc.
5 #include <vnet/udp/udp.h>
6 #include <vnet/ip/ip4_inlines.h>
7 #include <vnet/ip/ip6_inlines.h>
9 #define udp_node_index(node_id, is_ip4) \
10 ((is_ip4) ? udp4_##node_id##_node.index : udp6_##node_id##_node.index)
12 typedef enum udp_output_next_
15 UDP_OUTPUT_NEXT_IP_LOOKUP,
19 #define foreach_udp4_output_next \
20 _ (DROP, "error-drop") \
21 _ (IP_LOOKUP, "ip4-lookup")
23 #define foreach_udp6_output_next \
24 _ (DROP, "error-drop") \
25 _ (IP_LOOKUP, "ip6-lookup")
27 static vlib_error_desc_t udp_output_error_counters[] = {
28 #define udp_error(f, n, s, d) { #n, d, VL_COUNTER_SEVERITY_##s },
29 #include <vnet/udp/udp_error.def>
33 typedef struct udp_tx_trace_
35 udp_header_t udp_header;
36 udp_connection_t udp_connection;
40 format_udp_tx_trace (u8 *s, va_list *args)
42 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
43 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
44 udp_tx_trace_t *t = va_arg (*args, udp_tx_trace_t *);
45 udp_connection_t *uc = &t->udp_connection;
46 u32 indent = format_get_indent (s);
48 s = format (s, "%U\n%U%U", format_udp_connection, uc, 1, format_white_space,
49 indent, format_udp_header, &t->udp_header, 128);
54 always_inline udp_connection_t *
55 udp_output_get_connection (vlib_buffer_t *b, u32 thread_index)
57 if (PREDICT_FALSE (vnet_buffer (b)->tcp.flags & UDP_CONN_F_LISTEN))
58 return udp_listener_get (vnet_buffer (b)->tcp.connection_index);
60 return udp_connection_get (vnet_buffer (b)->tcp.connection_index,
65 udp46_output_trace_frame (vlib_main_t *vm, vlib_node_runtime_t *node,
66 u32 *to_next, u32 n_bufs)
74 for (i = 0; i < n_bufs; i++)
76 b = vlib_get_buffer (vm, to_next[i]);
77 if (!(b->flags & VLIB_BUFFER_IS_TRACED))
79 uh = vlib_buffer_get_current (b);
80 uc = udp_output_get_connection (b, vm->thread_index);
81 t = vlib_add_trace (vm, node, b, sizeof (*t));
82 clib_memcpy_fast (&t->udp_header, uh, sizeof (t->udp_header));
83 clib_memcpy_fast (&t->udp_connection, uc, sizeof (t->udp_connection));
88 udp_output_handle_packet (udp_connection_t *uc0, vlib_buffer_t *b0,
89 vlib_node_runtime_t *error_node, u16 *next0,
92 /* If next_index is not drop use it */
93 if (uc0->next_node_index)
95 *next0 = uc0->next_node_index;
96 vnet_buffer (b0)->tcp.next_node_opaque = uc0->next_node_opaque;
100 *next0 = UDP_OUTPUT_NEXT_IP_LOOKUP;
103 vnet_buffer (b0)->sw_if_index[VLIB_TX] = uc0->c_fib_index;
104 vnet_buffer (b0)->sw_if_index[VLIB_RX] = uc0->sw_if_index;
108 udp46_output_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
109 vlib_frame_t *frame, int is_ip4)
111 u32 n_left_from, *from, thread_index = vm->thread_index;
112 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
113 u16 nexts[VLIB_FRAME_SIZE], *next;
115 from = vlib_frame_vector_args (frame);
116 n_left_from = frame->n_vectors;
118 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
119 udp46_output_trace_frame (vm, node, from, n_left_from);
121 vlib_get_buffers (vm, from, bufs, n_left_from);
125 while (n_left_from >= 4)
127 udp_connection_t *uc0, *uc1;
129 vlib_prefetch_buffer_header (b[2], STORE);
130 CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
132 vlib_prefetch_buffer_header (b[3], STORE);
133 CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
135 uc0 = udp_output_get_connection (b[0], thread_index);
136 uc1 = udp_output_get_connection (b[1], thread_index);
138 if (PREDICT_TRUE (!uc0 + !uc1 == 0))
140 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
141 udp_output_handle_packet (uc1, b[1], node, &next[1], is_ip4);
147 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
151 b[0]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
152 next[0] = UDP_OUTPUT_NEXT_DROP;
156 udp_output_handle_packet (uc1, b[1], node, &next[1], is_ip4);
160 b[1]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
161 next[1] = UDP_OUTPUT_NEXT_DROP;
169 while (n_left_from > 0)
171 udp_connection_t *uc0;
175 vlib_prefetch_buffer_header (b[1], STORE);
176 CLIB_PREFETCH (b[1]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
179 uc0 = udp_output_get_connection (b[0], thread_index);
181 if (PREDICT_TRUE (uc0 != 0))
183 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
187 b[0]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
188 next[0] = UDP_OUTPUT_NEXT_DROP;
196 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
197 vlib_node_increment_counter (vm, udp_node_index (output, is_ip4),
198 UDP_ERROR_PKTS_SENT, frame->n_vectors);
199 return frame->n_vectors;
202 VLIB_NODE_FN (udp4_output_node)
203 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
205 return udp46_output_inline (vm, node, from_frame, 1 /* is_ip4 */);
208 VLIB_NODE_FN (udp6_output_node)
209 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
211 return udp46_output_inline (vm, node, from_frame, 0 /* is_ip4 */);
214 VLIB_REGISTER_NODE (udp4_output_node) =
216 .name = "udp4-output",
217 .vector_size = sizeof (u32),
218 .n_errors = UDP_N_ERROR,
219 .protocol_hint = VLIB_NODE_PROTO_HINT_UDP,
220 .error_counters = udp_output_error_counters,
221 .n_next_nodes = UDP_OUTPUT_N_NEXT,
223 #define _(s, n) [UDP_OUTPUT_NEXT_##s] = n,
224 foreach_udp4_output_next
227 .format_buffer = format_udp_header,
228 .format_trace = format_udp_tx_trace,
231 VLIB_REGISTER_NODE (udp6_output_node) =
233 .name = "udp6-output",
234 .vector_size = sizeof (u32),
235 .n_errors = UDP_N_ERROR,
236 .protocol_hint = VLIB_NODE_PROTO_HINT_UDP,
237 .error_counters = udp_output_error_counters,
238 .n_next_nodes = UDP_OUTPUT_N_NEXT,
240 #define _(s, n) [UDP_OUTPUT_NEXT_##s] = n,
241 foreach_udp6_output_next
244 .format_buffer = format_udp_header,
245 .format_trace = format_udp_tx_trace,
249 * fd.io coding-style-patch-verification: ON
252 * eval: (c-set-style "gnu")