/*
* node.c: udp packet processing
*
- * Copyright (c) 2013 Cisco and/or its affiliates.
+ * Copyright (c) 2013-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
#include <vnet/udp/udp_packet.h>
#include <vppinfra/sparse_vec.h>
-udp_main_t udp_main;
-
-#define foreach_udp_local_next \
- _ (PUNT4, "ip4-punt") \
- _ (PUNT6, "ip6-punt") \
- _ (DROP4, "ip4-drop") \
- _ (DROP6, "ip6-drop") \
- _ (ICMP4_ERROR, "ip4-icmp-error") \
- _ (ICMP6_ERROR, "ip6-icmp-error")
-
typedef enum
{
-#define _(s,n) UDP_LOCAL_NEXT_##s,
- foreach_udp_local_next
-#undef _
- UDP_LOCAL_N_NEXT,
+ UDP_LOCAL_NEXT_PUNT,
+ UDP_LOCAL_NEXT_DROP,
+ UDP_LOCAL_NEXT_ICMP,
+ UDP_LOCAL_N_NEXT
} udp_local_next_t;
-#define udp_local_next_drop(is_ip4) ((is_ip4) ? UDP_LOCAL_NEXT_DROP4 : UDP_LOCAL_NEXT_DROP6)
-#define udp_local_next_punt(is_ip4) ((is_ip4) ? UDP_LOCAL_NEXT_PUNT4 : UDP_LOCAL_NEXT_PUNT6)
-
typedef struct
{
u16 src_port;
u8 bound;
} udp_local_rx_trace_t;
+#define UDP_NO_NODE_SET ((u16) ~0)
+
+#ifndef CLIB_MARCH_VARIANT
u8 *
format_udp_rx_trace (u8 * s, va_list * args)
{
t->bound ? "" : " (no listener)");
return s;
}
-
-vlib_node_registration_t udp4_local_node;
-vlib_node_registration_t udp6_local_node;
+#endif /* CLIB_MARCH_VARIANT */
always_inline uword
udp46_local_inline (vlib_main_t * vm,
__attribute__ ((unused)) u32 n_left_from, next_index, *from, *to_next;
word n_no_listener = 0;
u8 punt_unknown = is_ip4 ? um->punt_unknown4 : um->punt_unknown6;
-
+ u16 *next_by_dst_port = (is_ip4 ?
+ um->next_by_dst_port4 : um->next_by_dst_port6);
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
{
error0 = UDP_ERROR_LENGTH_ERROR;
- next0 = udp_local_next_drop (is_ip4);
+ next0 = UDP_LOCAL_NEXT_DROP;
}
else
{
vlib_buffer_advance (b0, advance0);
h0 = vlib_buffer_get_current (b0);
- error0 = next0 = 0;
+ error0 = UDP_ERROR_NONE;
+ next0 = UDP_LOCAL_NEXT_PUNT;
if (PREDICT_FALSE (clib_net_to_host_u16 (h0->length) >
vlib_buffer_length_in_chain (vm, b0)))
{
error0 = UDP_ERROR_LENGTH_ERROR;
- next0 = udp_local_next_drop (is_ip4);
+ next0 = UDP_LOCAL_NEXT_DROP;
}
}
if (PREDICT_FALSE (b1->current_length < advance1 + sizeof (*h1)))
{
error1 = UDP_ERROR_LENGTH_ERROR;
- next1 = udp_local_next_drop (is_ip4);
+ next1 = UDP_LOCAL_NEXT_DROP;
}
else
{
vlib_buffer_advance (b1, advance1);
h1 = vlib_buffer_get_current (b1);
- error1 = next1 = 0;
+ error1 = UDP_ERROR_NONE;
+ next1 = UDP_LOCAL_NEXT_PUNT;
if (PREDICT_FALSE (clib_net_to_host_u16 (h1->length) >
vlib_buffer_length_in_chain (vm, b1)))
{
error1 = UDP_ERROR_LENGTH_ERROR;
- next1 = udp_local_next_drop (is_ip4);
+ next1 = UDP_LOCAL_NEXT_DROP;
}
}
/* Index sparse array with network byte order. */
dst_port0 = (error0 == 0) ? h0->dst_port : 0;
dst_port1 = (error1 == 0) ? h1->dst_port : 0;
- sparse_vec_index2 (is_ip4 ? um->next_by_dst_port4 :
- um->next_by_dst_port6,
- dst_port0, dst_port1, &i0, &i1);
- next0 = (error0 == 0) ?
- vec_elt (is_ip4 ? um->next_by_dst_port4 : um->next_by_dst_port6,
- i0) : next0;
- next1 = (error1 == 0) ?
- vec_elt (is_ip4 ? um->next_by_dst_port4 : um->next_by_dst_port6,
- i1) : next1;
-
- if (PREDICT_FALSE (i0 == SPARSE_VEC_INVALID_INDEX))
+ sparse_vec_index2 (next_by_dst_port, dst_port0, dst_port1, &i0,
+ &i1);
+ next0 = (error0 == 0) ? vec_elt (next_by_dst_port, i0) : next0;
+ next1 = (error1 == 0) ? vec_elt (next_by_dst_port, i1) : next1;
+
+ if (PREDICT_FALSE (i0 == SPARSE_VEC_INVALID_INDEX ||
+ next0 == UDP_NO_NODE_SET))
{
// move the pointer back so icmp-error can find the
// ip packet header
if (PREDICT_FALSE (punt_unknown))
{
b0->error = node->errors[UDP_ERROR_PUNT];
- next0 = udp_local_next_punt (is_ip4);
+ next0 = UDP_LOCAL_NEXT_PUNT;
}
else if (is_ip4)
{
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_port_unreachable,
0);
- next0 = UDP_LOCAL_NEXT_ICMP4_ERROR;
+ next0 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
else
ICMP6_destination_unreachable,
ICMP6_destination_unreachable_port_unreachable,
0);
- next0 = UDP_LOCAL_NEXT_ICMP6_ERROR;
+ next0 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
}
vlib_buffer_advance (b0, sizeof (*h0));
}
- if (PREDICT_FALSE (i1 == SPARSE_VEC_INVALID_INDEX))
+ if (PREDICT_FALSE (i1 == SPARSE_VEC_INVALID_INDEX ||
+ next1 == UDP_NO_NODE_SET))
{
// move the pointer back so icmp-error can find the
// ip packet header
if (PREDICT_FALSE (punt_unknown))
{
b1->error = node->errors[UDP_ERROR_PUNT];
- next1 = udp_local_next_punt (is_ip4);
+ next1 = UDP_LOCAL_NEXT_PUNT;
}
else if (is_ip4)
{
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_port_unreachable,
0);
- next1 = UDP_LOCAL_NEXT_ICMP4_ERROR;
+ next1 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
else
ICMP6_destination_unreachable,
ICMP6_destination_unreachable_port_unreachable,
0);
- next1 = UDP_LOCAL_NEXT_ICMP6_ERROR;
+ next1 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
}
{
tr->src_port = h0 ? h0->src_port : 0;
tr->dst_port = h0 ? h0->dst_port : 0;
- tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
- next0 != UDP_LOCAL_NEXT_ICMP6_ERROR);
+ tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP);
}
}
if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
{
tr->src_port = h1 ? h1->src_port : 0;
tr->dst_port = h1 ? h1->dst_port : 0;
- tr->bound = (next1 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
- next1 != UDP_LOCAL_NEXT_ICMP6_ERROR);
+ tr->bound = (next1 != UDP_LOCAL_NEXT_ICMP);
}
}
if (PREDICT_FALSE (b0->current_length < advance0 + sizeof (*h0)))
{
b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
- next0 = udp_local_next_drop (is_ip4);
+ next0 = UDP_LOCAL_NEXT_DROP;
goto trace_x1;
}
if (PREDICT_TRUE (clib_net_to_host_u16 (h0->length) <=
vlib_buffer_length_in_chain (vm, b0)))
{
- i0 = sparse_vec_index (is_ip4 ? um->next_by_dst_port4 :
- um->next_by_dst_port6, h0->dst_port);
- next0 = vec_elt (is_ip4 ? um->next_by_dst_port4 :
- um->next_by_dst_port6, i0);
+ i0 = sparse_vec_index (next_by_dst_port, h0->dst_port);
+ next0 = vec_elt (next_by_dst_port, i0);
- if (PREDICT_FALSE (i0 == SPARSE_VEC_INVALID_INDEX))
+ if (PREDICT_FALSE ((i0 == SPARSE_VEC_INVALID_INDEX) ||
+ next0 == UDP_NO_NODE_SET))
{
// move the pointer back so icmp-error can find the
// ip packet header
if (PREDICT_FALSE (punt_unknown))
{
b0->error = node->errors[UDP_ERROR_PUNT];
- next0 = udp_local_next_punt (is_ip4);
+ next0 = UDP_LOCAL_NEXT_PUNT;
}
else if (is_ip4)
{
ICMP4_destination_unreachable,
ICMP4_destination_unreachable_port_unreachable,
0);
- next0 = UDP_LOCAL_NEXT_ICMP4_ERROR;
+ next0 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
else
ICMP6_destination_unreachable,
ICMP6_destination_unreachable_port_unreachable,
0);
- next0 = UDP_LOCAL_NEXT_ICMP6_ERROR;
+ next0 = UDP_LOCAL_NEXT_ICMP;
n_no_listener++;
}
}
else
{
b0->error = node->errors[UDP_ERROR_LENGTH_ERROR];
- next0 = udp_local_next_drop (is_ip4);
+ next0 = UDP_LOCAL_NEXT_DROP;
}
trace_x1:
{
tr->src_port = h0->src_port;
tr->dst_port = h0->dst_port;
- tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP4_ERROR &&
- next0 != UDP_LOCAL_NEXT_ICMP6_ERROR);
+ tr->bound = (next0 != UDP_LOCAL_NEXT_ICMP);
}
}
#undef udp_error
};
-static uword
-udp4_local (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+VLIB_NODE_FN (udp4_local_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
return udp46_local_inline (vm, node, from_frame, 1 /* is_ip4 */ );
}
-static uword
-udp6_local (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+VLIB_NODE_FN (udp6_local_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
return udp46_local_inline (vm, node, from_frame, 0 /* is_ip4 */ );
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (udp4_local_node) = {
- .function = udp4_local,
.name = "ip4-udp-lookup",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
.n_next_nodes = UDP_LOCAL_N_NEXT,
.next_nodes = {
-#define _(s,n) [UDP_LOCAL_NEXT_##s] = n,
- foreach_udp_local_next
-#undef _
+ [UDP_LOCAL_NEXT_PUNT]= "ip4-punt",
+ [UDP_LOCAL_NEXT_DROP]= "ip4-drop",
+ [UDP_LOCAL_NEXT_ICMP]= "ip4-icmp-error",
},
.format_buffer = format_udp_header,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (udp4_local_node, udp4_local);
-
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (udp6_local_node) = {
- .function = udp6_local,
.name = "ip6-udp-lookup",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
.n_next_nodes = UDP_LOCAL_N_NEXT,
.next_nodes = {
-#define _(s,n) [UDP_LOCAL_NEXT_##s] = n,
- foreach_udp_local_next
-#undef _
+ [UDP_LOCAL_NEXT_PUNT]= "ip6-punt",
+ [UDP_LOCAL_NEXT_DROP]= "ip6-drop",
+ [UDP_LOCAL_NEXT_ICMP]= "ip6-icmp-error",
},
.format_buffer = format_udp_header,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (udp6_local_node, udp6_local);
-
+#ifndef CLIB_MARCH_VARIANT
static void
add_dst_port (udp_main_t * um,
udp_dst_port_t dst_port, char *dst_port_name, u8 is_ip4)
n = sparse_vec_validate (um->next_by_dst_port6,
clib_host_to_net_u16 (dst_port));
- n[0] = SPARSE_VEC_INVALID_INDEX;
+ n[0] = UDP_NO_NODE_SET;
+}
+
+bool
+udp_is_valid_dst_port (udp_dst_port_t dst_port, u8 is_ip4)
+{
+ udp_main_t *um = &udp_main;
+ u16 *n;
+
+ if (is_ip4)
+ n = sparse_vec_validate (um->next_by_dst_port4,
+ clib_host_to_net_u16 (dst_port));
+ else
+ n = sparse_vec_validate (um->next_by_dst_port6,
+ clib_host_to_net_u16 (dst_port));
+
+ return (n[0] != SPARSE_VEC_INVALID_INDEX && n[0] != UDP_NO_NODE_SET);
}
void
udp = p;
}
- memset (udp, 0, sizeof (udp[0]));
+ clib_memset (udp, 0, sizeof (udp[0]));
if (unformat (input, "src-port %d dst-port %d", &src_port, &dst_port))
{
udp->src_port = clib_host_to_net_u16 (src_port);
}
VLIB_INIT_FUNCTION (udp_local_init);
+#endif /* CLIB_MARCH_VARIANT */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff