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|
/*
* Copyright (c) 2017-2019 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:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "iface_udp_node.h"
#include "dpo_udp.h"
#include "../face.h"
#include "../../infra.h"
#include "../../hicn.h"
/**
* @File
*
* Definition of the nodes for udp incomplete faces.
*/
vlib_node_registration_t hicn_iface_udp4_input_node;
vlib_node_registration_t hicn_iface_udp6_input_node;
vlib_node_registration_t hicn_iface_udp4_output_node;
vlib_node_registration_t hicn_iface_udp6_output_node;
u32 data_fwd_face_udp4_vlib_edge;
u32 data_fwd_face_udp6_vlib_edge;
void
hicn_iface_udp_init (vlib_main_t * vm)
{
data_fwd_face_udp4_vlib_edge = vlib_node_add_next (vm,
hicn_data_fwd_node.index,
hicn_iface_udp4_output_node.
index);
data_fwd_face_udp6_vlib_edge = vlib_node_add_next (vm,
hicn_data_fwd_node.index,
hicn_iface_udp6_output_node.
index);
u32 temp_index4 = vlib_node_add_next (vm,
hicn_interest_hitcs_node.index,
hicn_iface_udp4_output_node.index);
u32 temp_index6 = vlib_node_add_next (vm,
hicn_interest_hitcs_node.index,
hicn_iface_udp6_output_node.index);
ASSERT (temp_index4 == data_fwd_face_udp4_vlib_edge);
ASSERT (temp_index6 == data_fwd_face_udp6_vlib_edge);
}
static char *hicn_iface_udp4_input_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn_iface_udp6_input_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
u32
get_face_udp4_output_node (void)
{
return data_fwd_face_udp4_vlib_edge;
}
u32
get_face_udp6_output_node (void)
{
return data_fwd_face_udp6_vlib_edge;
}
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_iface_udp4_input_trace_t;
typedef enum
{
HICN_IFACE_UDP4_INPUT_NEXT_INTEREST,
HICN_IFACE_UDP4_INPUT_NEXT_MAPME,
HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP,
HICN_IFACE_UDP4_INPUT_N_NEXT,
} hicn_iface_udp4_input_next_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_iface_udp6_input_trace_t;
typedef enum
{
HICN_IFACE_UDP6_INPUT_NEXT_INTEREST,
HICN_IFACE_UDP6_INPUT_NEXT_MAPME,
HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP,
HICN_IFACE_UDP6_INPUT_N_NEXT,
} hicn_iface_udp6_input_next_t;
#define ERROR_INPUT_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP
#define ERROR_INPUT_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP
#define IP_HEADER_4 ip4_header_t
#define IP_HEADER_6 ip6_header_t
#define NEXT_MAPME_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_MAPME
#define NEXT_MAPME_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_MAPME
#define NEXT_INTEREST_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_INTEREST
#define NEXT_INTEREST_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_INTEREST
#define HICN_IFACE_UDP_ADD_LOCK_IP4 hicn_dpo_udp4_add_and_lock
#define HICN_IFACE_UDP_ADD_LOCK_IP6 hicn_dpo_udp6_add_and_lock
#define GET_FACE_UDP4 get_face_udp4_output_node
#define GET_FACE_UDP6 get_face_udp6_output_node
#define TRACE_INPUT_PKT_UDP4 hicn_iface_udp4_input_trace_t
#define TRACE_INPUT_PKT_UDP6 hicn_iface_udp6_input_trace_t
#define iface_input_x1(ipv) \
do { \
vlib_buffer_t *b0; \
u32 bi0; \
u32 next0 = ERROR_INPUT_UDP##ipv; \
IP_HEADER_##ipv * ip_hdr = NULL; \
u8 * inner_ip_hdr = NULL; \
udp_header_t * udp_hdr = NULL; \
hicn_buffer_t * hicnb0; \
/* Prefetch for next iteration. */ \
if (n_left_from > 1) \
{ \
vlib_buffer_t *b1; \
b1 = vlib_get_buffer (vm, from[1]); \
CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
} \
/* Dequeue a packet buffer */ \
bi0 = from[0]; \
from += 1; \
n_left_from -= 1; \
to_next[0] = bi0; \
to_next += 1; \
n_left_to_next -= 1; \
\
b0 = vlib_get_buffer (vm, bi0); \
ip_hdr = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
udp_hdr = (udp_header_t *) (ip_hdr + 1); \
hicnb0 = hicn_get_buffer(b0); \
\
stats.pkts_interest_count += 1; \
\
inner_ip_hdr = (u8 *)(udp_hdr + 1); \
u8 is_v6 = ((inner_ip_hdr[0] & 2) >> 1); \
u8 is_icmp = is_v6*(inner_ip_hdr[7] == IPPROTO_ICMPV6) + \
(1 - is_v6)*(inner_ip_hdr[10] == IPPROTO_ICMPV4); \
\
next0 = is_icmp*NEXT_MAPME_UDP##ipv + \
(1-is_icmp)*NEXT_INTEREST_UDP##ipv; \
\
HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
(&(hicnb0->face_dpo_id), \
&(ip_hdr->dst_address), \
&(ip_hdr->src_address), \
udp_hdr->dst_port, \
udp_hdr->src_port, \
GET_FACE_UDP##ipv \
(), \
&hicnb0->flags, \
vnet_buffer(b0)->sw_if_index[VLIB_RX]); \
\
vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_INPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
t->next_index = next0; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b0), \
sizeof (t->packet_data)); \
} \
\
\
/* Verify speculative enqueue, maybe switch current next frame */ \
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
to_next, n_left_to_next, \
bi0, next0); \
}while(0)
#define iface_input_x2(ipv) \
do { \
vlib_buffer_t *b0, *b1; \
u32 bi0, bi1; \
u32 next0, next1 = ERROR_INPUT_UDP##ipv; \
IP_HEADER_##ipv * ip_hdr0 = NULL, *ip_hdr1 = NULL; \
u8 * inner_ip_hdr0 = NULL, *inner_ip_hdr1 = NULL; \
udp_header_t * udp_hdr0 = NULL, *udp_hdr1 = NULL; \
hicn_buffer_t * hicnb0, *hicnb1; \
\
/* Prefetch for next iteration. */ \
{ \
vlib_buffer_t *b2, *b3; \
b2 = vlib_get_buffer (vm, from[2]); \
b3 = vlib_get_buffer (vm, from[3]); \
CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
} \
\
/* Dequeue a packet buffer */ \
bi0 = from[0]; \
bi1 = from[1]; \
from += 2; \
n_left_from -= 2; \
to_next[0] = bi0; \
to_next[1] = bi1; \
to_next += 2; \
n_left_to_next -= 2; \
\
b0 = vlib_get_buffer (vm, bi0); \
b1 = vlib_get_buffer (vm, bi1); \
ip_hdr0 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
ip_hdr1 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b1); \
udp_hdr0 = (udp_header_t *) (ip_hdr0 + 1); \
udp_hdr1 = (udp_header_t *) (ip_hdr1 + 1); \
hicnb0 = hicn_get_buffer(b0); \
hicnb1 = hicn_get_buffer(b1); \
\
stats.pkts_interest_count += 2; \
\
inner_ip_hdr0 = (u8 *)(udp_hdr0 + 1); \
inner_ip_hdr1 = (u8 *)(udp_hdr1 + 1); \
u8 is_v6_0 = ((inner_ip_hdr0[0] & 2) >> 1); \
u8 is_v6_1 = ((inner_ip_hdr1[0] & 2) >> 1); \
u8 is_icmp0 = is_v6_0*(inner_ip_hdr0[7] == IPPROTO_ICMPV6) + \
(1 - is_v6_0)*(inner_ip_hdr0[10] == IPPROTO_ICMPV4); \
u8 is_icmp1 = is_v6_1*(inner_ip_hdr1[7] == IPPROTO_ICMPV6) + \
(1 - is_v6_1)*(inner_ip_hdr1[10] == IPPROTO_ICMPV4); \
\
next0 = is_icmp0*NEXT_MAPME_UDP##ipv + \
(1-is_icmp0)*NEXT_INTEREST_UDP##ipv; \
next1 = is_icmp1*NEXT_MAPME_UDP##ipv + \
(1-is_icmp1)*NEXT_INTEREST_UDP##ipv; \
\
HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
(&(hicnb0->face_dpo_id), \
&(ip_hdr0->dst_address), \
&(ip_hdr0->src_address), \
udp_hdr0->dst_port, \
udp_hdr0->src_port, \
GET_FACE_UDP##ipv \
(), \
&hicnb0->flags, \
vnet_buffer(b0)->sw_if_index[VLIB_RX]); \
\
\
HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
(&(hicnb1->face_dpo_id), \
&(ip_hdr1->dst_address), \
&(ip_hdr1->src_address), \
udp_hdr1->dst_port, \
udp_hdr1->src_port, \
GET_FACE_UDP##ipv \
(), \
&hicnb1->flags, \
vnet_buffer(b1)->sw_if_index[VLIB_RX]); \
\
vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
\
vlib_buffer_advance(b1, sizeof(IP_HEADER_##ipv) + \
sizeof(udp_header_t)); \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_INPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
t->next_index = next0; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b0), \
sizeof (t->packet_data)); \
} \
\
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b1->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_INPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b1, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
t->next_index = next1; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b1), \
sizeof (t->packet_data)); \
} \
\
\
/* Verify speculative enqueue, maybe switch current next frame */ \
vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
to_next, n_left_to_next, \
bi0, bi1, next0, next1); \
}while(0)
static uword
hicn_iface_udp4_input_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next, next_index;
vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
while (n_left_from > 0)
{
u32 n_left_to_next;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
/* Dual loop, X2 */
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_input_x2 (4);
}
/* Dual loop, X1 */
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_input_x1 (4);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_node_increment_counter (vm, node->node_index,
HICNFWD_ERROR_INTERESTS,
stats.pkts_interest_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn_iface_udp4_input_format_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
hicn_iface_udp4_input_trace_t *t =
va_arg (*args, hicn_iface_udp4_input_trace_t *);
s =
format (s, "IFACE_UDP4_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_iface_udp4_input_node) =
{
.function = hicn_iface_udp4_input_node_fn,
.name = "hicn-iface-udp4-input",
.vector_size = sizeof (u32),
.format_trace = hicn_iface_udp4_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_iface_udp4_input_error_strings),
.error_strings = hicn_iface_udp4_input_error_strings,
.n_next_nodes = HICN_IFACE_UDP4_INPUT_N_NEXT,
.next_nodes =
{
[HICN_IFACE_UDP4_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
[HICN_IFACE_UDP4_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
[HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
static uword
hicn_iface_udp6_input_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next, next_index;
vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
while (n_left_from > 0)
{
u32 n_left_to_next;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
/* Dual loop, X2 */
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_input_x2 (6);
}
/* Dual loop, X1 */
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_input_x1 (6);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_node_increment_counter (vm, node->node_index,
HICNFWD_ERROR_INTERESTS,
stats.pkts_interest_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn_iface_udp6_input_format_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
hicn_iface_udp6_input_trace_t *t =
va_arg (*args, hicn_iface_udp6_input_trace_t *);
s =
format (s, "IFACE_UDP6_INPUT: pkt: %d, sw_if_index %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_iface_udp6_input_node) =
{
.function = hicn_iface_udp6_input_node_fn,
.name = "hicn-iface-udp6-input",
.vector_size = sizeof (u32),
.format_trace = hicn_iface_udp6_input_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_iface_udp6_input_error_strings),
.error_strings = hicn_iface_udp6_input_error_strings,
.n_next_nodes = HICN_IFACE_UDP6_INPUT_N_NEXT,
.next_nodes =
{
[HICN_IFACE_UDP6_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
[HICN_IFACE_UDP6_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
[HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
/******* Iface Output *******/
always_inline void
hicn_iface_udp4_encap (vlib_main_t * vm,
vlib_buffer_t * b0, hicn_face_t * face)
{
u16 new_l0 = 0;
ip4_header_t *ip0;
udp_header_t *udp0;
hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
/* Adjust vlib buffers */
/* Set the right length on the header buffer */
/* Move the next buffer current data pointer back to the ip+tcp header (hicn header) */
word offset = sizeof (ip4_header_t) + sizeof (udp_header_t);
vlib_buffer_advance (b0, -offset);
/* ip */
ip0 = vlib_buffer_get_current (b0);
clib_memcpy (ip0, &(face_udp->hdrs.ip4.ip), sizeof (ip4_header_t) +
sizeof (udp_header_t));
/* Fix UDP length */
udp0 = (udp_header_t *) (ip0 + 1);
new_l0 =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
sizeof (*ip0));
udp0->length = new_l0;
ip0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
ip0->checksum = ip4_header_checksum (ip0);
}
always_inline void
hicn_iface_udp6_encap (vlib_main_t * vm,
vlib_buffer_t * b0, hicn_face_t * face)
{
int bogus0;
u16 new_l0;
ip6_header_t *ip0;
udp_header_t *udp0;
hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
/* Adjust vlib buffer */
word offset = sizeof (ip6_header_t) + sizeof (udp_header_t);
vlib_buffer_advance (b0, -offset);
/* ip */
ip0 = vlib_buffer_get_current (b0);
clib_memcpy (ip0, &(face_udp->hdrs.ip6.ip), sizeof (ip6_header_t) +
sizeof (udp_header_t));
new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)
- sizeof (*ip0));
ip0->payload_length = new_l0;
/* Fix UDP length */
udp0 = (udp_header_t *) (ip0 + 1);
udp0->length = new_l0;
udp0->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0, &bogus0);
ASSERT (bogus0 == 0);
if (udp0->checksum == 0)
udp0->checksum = 0xffff;
}
static char *hicn_iface_udp4_output_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
static char *hicn_iface_udp6_output_error_strings[] = {
#define _(sym, string) string,
foreach_hicnfwd_error
#undef _
};
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_iface_udp4_output_trace_t;
typedef enum
{
HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP,
HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP,
HICN_IFACE_UDP4_OUTPUT_N_NEXT,
} hicn_iface_udp4_output_next_t;
/* Trace context struct */
typedef struct
{
u32 next_index;
u32 sw_if_index;
u8 pkt_type;
u8 packet_data[60];
}
hicn_iface_udp6_output_trace_t;
typedef enum
{
HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP,
HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP,
HICN_IFACE_UDP6_OUTPUT_N_NEXT,
} hicn_iface_udp6_output_next_t;
#define ERROR_OUTPUT_UDP4 HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP
#define ERROR_OUTPUT_UDP6 HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP
#define IP_HEADER_4 ip4_header_t
#define IP_HEADER_6 ip6_header_t
#define NEXT_LOOKUP_UDP4 HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP
#define NEXT_LOOKUP_UDP6 HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP
#define HICN_IFACE_UDP_ADD_LOCK_IP4 hicn_dpo_udp4_add_and_lock
#define HICN_IFACE_UDP_ADD_LOCK_IP6 hicn_dpo_udp6_add_and_lock
#define HICN_FACE_UDP_ENCAP_IP4 hicn_iface_udp4_encap
#define HICN_FACE_UDP_ENCAP_IP6 hicn_iface_udp6_encap
#define TRACE_OUTPUT_PKT_UDP4 hicn_iface_udp4_output_trace_t
#define TRACE_OUTPUT_PKT_UDP6 hicn_iface_udp6_output_trace_t
#define SIZE_HICN_HEADER4 sizeof(ip4_header_t) + sizeof(udp_header_t)
#define SIZE_HICN_HEADER6 sizeof(ip6_header_t) + sizeof(udp_header_t)
#define iface_output_x1(ipv) \
do { \
vlib_buffer_t *b0; \
u32 bi0; \
u32 next0 = ERROR_OUTPUT_UDP##ipv; \
hicn_face_t * face; \
\
/* Prefetch for next iteration. */ \
if (n_left_from > 1) \
{ \
vlib_buffer_t *b1; \
b1 = vlib_get_buffer (vm, from[1]); \
CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
} \
/* Dequeue a packet buffer */ \
bi0 = from[0]; \
from += 1; \
n_left_from -= 1; \
to_next[0] = bi0; \
to_next += 1; \
n_left_to_next -= 1; \
\
b0 = vlib_get_buffer (vm, bi0); \
\
face = \
hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
\
if (PREDICT_TRUE(face != NULL)) \
{ \
HICN_FACE_UDP_ENCAP_IP##ipv \
(vm, b0, face); \
next0 = NEXT_LOOKUP_UDP##ipv; \
stats.pkts_data_count += 1; \
} \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_OUTPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
t->next_index = next0; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b0) + \
SIZE_HICN_HEADER##ipv, \
sizeof (t->packet_data)); \
} \
\
\
/* Verify speculative enqueue, maybe switch current next frame */ \
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
to_next, n_left_to_next, \
bi0, next0); \
} while(0)
#define iface_output_x2(ipv) \
do { \
vlib_buffer_t *b0, *b1; \
u32 bi0, bi1; \
u32 next0 = ERROR_OUTPUT_UDP##ipv, next1 = ERROR_OUTPUT_UDP##ipv; \
hicn_face_t *face0, *face1; \
\
/* Prefetch for next iteration. */ \
{ \
vlib_buffer_t *b2, *b3; \
b2 = vlib_get_buffer (vm, from[2]); \
b3 = vlib_get_buffer (vm, from[3]); \
CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
} \
\
/* Dequeue packets buffers */ \
bi0 = from[0]; \
bi1 = from[1]; \
from += 2; \
n_left_from -= 2; \
to_next[0] = bi0; \
to_next[1] = bi1; \
to_next += 2; \
n_left_to_next -= 2; \
\
b0 = vlib_get_buffer (vm, bi0); \
b1 = vlib_get_buffer (vm, bi1); \
\
face0 = \
hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
face1 = \
hicn_dpoi_get_from_idx(vnet_buffer (b1)->ip.adj_index[VLIB_TX]); \
\
if (PREDICT_TRUE(face0 != NULL)) \
{ \
HICN_FACE_UDP_ENCAP_IP##ipv \
(vm, b0, face0); \
next0 = NEXT_LOOKUP_UDP##ipv; \
stats.pkts_data_count += 1; \
} \
\
if (PREDICT_TRUE(face1 != NULL)) \
{ \
HICN_FACE_UDP_ENCAP_IP##ipv \
(vm, b1, face1); \
next1 = NEXT_LOOKUP_UDP##ipv; \
stats.pkts_data_count += 1; \
} \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b0->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_OUTPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b0, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
t->next_index = next0; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b0) + \
SIZE_HICN_HEADER##ipv, \
sizeof (t->packet_data)); \
} \
\
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
(b1->flags & VLIB_BUFFER_IS_TRACED))) \
{ \
TRACE_OUTPUT_PKT_UDP##ipv *t = \
vlib_add_trace (vm, node, b1, sizeof (*t)); \
t->pkt_type = HICN_PKT_TYPE_INTEREST; \
t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
t->next_index = next1; \
clib_memcpy_fast (t->packet_data, \
vlib_buffer_get_current (b1) + \
SIZE_HICN_HEADER##ipv, \
sizeof (t->packet_data)); \
} \
\
\
/* Verify speculative enqueue, maybe switch current next frame */ \
vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
to_next, n_left_to_next, \
bi0, bi1, next0, next1); \
} while(0)
static uword
hicn_iface_udp4_output_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next, next_index;
vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
while (n_left_from > 0)
{
u32 n_left_to_next;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_output_x2 (4);
}
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_output_x1 (4);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_node_increment_counter (vm, node->node_index,
HICNFWD_ERROR_DATAS, stats.pkts_data_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn_iface_udp4_output_format_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
hicn_iface_udp4_output_trace_t *t =
va_arg (*args, hicn_iface_udp4_output_trace_t *);
s =
format (s,
"IFACE_UDP4_OUTPUT: pkt: %d, out face %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_iface_udp4_output_node) =
{
.function = hicn_iface_udp4_output_node_fn,
.name = "hicn-iface-udp4-output",
.vector_size = sizeof (u32),
.format_trace = hicn_iface_udp4_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_iface_udp4_output_error_strings),
.error_strings = hicn_iface_udp4_output_error_strings,
.n_next_nodes = HICN_IFACE_UDP4_OUTPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP] = "ip4-lookup",
[HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
static uword
hicn_iface_udp6_output_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 n_left_from, *from, *to_next, next_index;
vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
while (n_left_from > 0)
{
u32 n_left_to_next;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
iface_output_x2 (6);
}
while (n_left_from > 0 && n_left_to_next > 0)
{
iface_output_x1 (6);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_node_increment_counter (vm, node->node_index,
HICNFWD_ERROR_DATAS, stats.pkts_data_count);
return (frame->n_vectors);
}
/* packet trace format function */
static u8 *
hicn_iface_udp6_output_format_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
hicn_iface_udp6_output_trace_t *t =
va_arg (*args, hicn_iface_udp6_output_trace_t *);
s =
format (s,
"IFACE_UDP6_OUTPUT: pkt: %d, out face %d, next index %d\n%U",
(int) t->pkt_type, t->sw_if_index, t->next_index,
(t->packet_data[0] & 0xf0) ==
0x40 ? format_ip4_header : format_ip6_header, t->packet_data,
sizeof (t->packet_data));
return (s);
}
/*
* Node registration for the interest forwarder node
*/
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (hicn_iface_udp6_output_node) =
{
.function = hicn_iface_udp6_output_node_fn,
.name = "hicn-iface-udp6-output",
.vector_size = sizeof (u32),
.format_trace = hicn_iface_udp6_output_format_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (hicn_iface_udp6_output_error_strings),
.error_strings = hicn_iface_udp6_output_error_strings,
.n_next_nodes = HICN_IFACE_UDP6_OUTPUT_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP] = "ip6-lookup",
[HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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