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, format_white_space,
49 indent, format_udp_header, &t->udp_header, 128);
55 udp46_output_trace_frame (vlib_main_t *vm, vlib_node_runtime_t *node,
56 u32 *to_next, u32 n_bufs)
64 for (i = 0; i < n_bufs; i++)
66 b = vlib_get_buffer (vm, to_next[i]);
67 if (!(b->flags & VLIB_BUFFER_IS_TRACED))
69 uh = vlib_buffer_get_current (b);
70 uc = udp_connection_get (vnet_buffer (b)->tcp.connection_index,
72 t = vlib_add_trace (vm, node, b, sizeof (*t));
73 clib_memcpy_fast (&t->udp_header, uh, sizeof (t->udp_header));
74 clib_memcpy_fast (&t->udp_connection, uc, sizeof (t->udp_connection));
79 udp_output_push_ip (vlib_main_t *vm, vlib_buffer_t *b, udp_connection_t *uc,
83 vlib_buffer_push_ip4_custom (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
84 IP_PROTOCOL_UDP, udp_csum_offload (uc),
85 0 /* is_df */, uc->c_dscp);
87 vlib_buffer_push_ip6 (vm, b, &uc->c_lcl_ip6, &uc->c_rmt_ip6,
89 vnet_buffer (b)->sw_if_index[VLIB_RX] = uc->sw_if_index;
90 vnet_buffer (b)->sw_if_index[VLIB_TX] = uc->c_fib_index;
94 udp_output_handle_packet (udp_connection_t *uc0, vlib_buffer_t *b0,
95 vlib_node_runtime_t *error_node, u16 *next0,
98 /* If next_index is not drop use it */
99 if (uc0->next_node_index)
101 *next0 = uc0->next_node_index;
102 vnet_buffer (b0)->tcp.next_node_opaque = uc0->next_node_opaque;
106 *next0 = UDP_OUTPUT_NEXT_IP_LOOKUP;
109 vnet_buffer (b0)->sw_if_index[VLIB_TX] = uc0->c_fib_index;
110 vnet_buffer (b0)->sw_if_index[VLIB_RX] = uc0->sw_if_index;
114 udp46_output_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
115 vlib_frame_t *frame, int is_ip4)
117 u32 n_left_from, *from, thread_index = vm->thread_index;
118 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
119 u16 nexts[VLIB_FRAME_SIZE], *next;
121 from = vlib_frame_vector_args (frame);
122 n_left_from = frame->n_vectors;
124 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
125 udp46_output_trace_frame (vm, node, from, n_left_from);
127 vlib_get_buffers (vm, from, bufs, n_left_from);
131 while (n_left_from >= 4)
133 udp_connection_t *uc0, *uc1;
135 vlib_prefetch_buffer_header (b[2], STORE);
136 CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
138 vlib_prefetch_buffer_header (b[3], STORE);
139 CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
141 uc0 = udp_connection_get (vnet_buffer (b[0])->tcp.connection_index,
143 uc1 = udp_connection_get (vnet_buffer (b[1])->tcp.connection_index,
146 if (PREDICT_TRUE (!uc0 + !uc1 == 0))
148 udp_output_push_ip (vm, b[0], uc0, is_ip4);
149 udp_output_push_ip (vm, b[1], uc1, is_ip4);
151 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
152 udp_output_handle_packet (uc1, b[1], node, &next[1], is_ip4);
158 udp_output_push_ip (vm, b[0], uc0, is_ip4);
159 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
163 b[0]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
164 next[0] = UDP_OUTPUT_NEXT_DROP;
168 udp_output_push_ip (vm, b[1], uc1, is_ip4);
169 udp_output_handle_packet (uc1, b[1], node, &next[1], is_ip4);
173 b[1]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
174 next[1] = UDP_OUTPUT_NEXT_DROP;
182 while (n_left_from > 0)
184 udp_connection_t *uc0;
188 vlib_prefetch_buffer_header (b[1], STORE);
189 CLIB_PREFETCH (b[1]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
192 uc0 = udp_connection_get (vnet_buffer (b[0])->tcp.connection_index,
195 if (PREDICT_TRUE (uc0 != 0))
197 udp_output_push_ip (vm, b[0], uc0, is_ip4);
198 udp_output_handle_packet (uc0, b[0], node, &next[0], is_ip4);
202 b[0]->error = node->errors[UDP_ERROR_INVALID_CONNECTION];
203 next[0] = UDP_OUTPUT_NEXT_DROP;
211 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
212 vlib_node_increment_counter (vm, udp_node_index (output, is_ip4),
213 UDP_ERROR_PKTS_SENT, frame->n_vectors);
214 return frame->n_vectors;
217 VLIB_NODE_FN (udp4_output_node)
218 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
220 return udp46_output_inline (vm, node, from_frame, 1 /* is_ip4 */);
223 VLIB_NODE_FN (udp6_output_node)
224 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
226 return udp46_output_inline (vm, node, from_frame, 0 /* is_ip4 */);
229 VLIB_REGISTER_NODE (udp4_output_node) =
231 .name = "udp4-output",
232 .vector_size = sizeof (u32),
233 .n_errors = UDP_N_ERROR,
234 .protocol_hint = VLIB_NODE_PROTO_HINT_UDP,
235 .error_counters = udp_output_error_counters,
236 .n_next_nodes = UDP_OUTPUT_N_NEXT,
238 #define _(s, n) [UDP_OUTPUT_NEXT_##s] = n,
239 foreach_udp4_output_next
242 .format_buffer = format_udp_header,
243 .format_trace = format_udp_tx_trace,
246 VLIB_REGISTER_NODE (udp6_output_node) =
248 .name = "udp6-output",
249 .vector_size = sizeof (u32),
250 .n_errors = UDP_N_ERROR,
251 .protocol_hint = VLIB_NODE_PROTO_HINT_UDP,
252 .error_counters = udp_output_error_counters,
253 .n_next_nodes = UDP_OUTPUT_N_NEXT,
255 #define _(s, n) [UDP_OUTPUT_NEXT_##s] = n,
256 foreach_udp6_output_next
259 .format_buffer = format_udp_header,
260 .format_trace = format_udp_tx_trace,
264 * fd.io coding-style-patch-verification: ON
267 * eval: (c-set-style "gnu")