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/*
* Copyright (c) 2018 HUACHENTEL and/or its affiliates.
* Copyright (c) 2018 PANTHEON.tech
* 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.
*/
#ifndef __SC_VPP_COMMM_H__
#define __SC_VPP_COMMM_H__
#include <errno.h>
#include <vapi/vapi.h>
#include <vapi/vapi_common.h>
#include <vapi/vpe.api.vapi.h>
typedef enum {
SCVPP_OK = 0, /* Success */
SCVPP_EINVAL, /* Invalid value encountered */
SCVPP_EAGAIN, /* Operation would block */
SCVPP_ENOTSUP, /* Operation not supported */
SCVPP_ENOMEM, /* Out of memory */
SCVPP_NOT_FOUND, /* Required element can not be found */
} scvpp_error_e;
// Use VAPI macros to define symbols
DEFINE_VAPI_MSG_IDS_VPE_API_JSON;
#define VPP_IP4_HOST_PREFIX_LEN 32
#define VPP_INTFC_NAME_LEN 64 /* Interface name max length */
#define VPP_IP4_ADDRESS_LEN 4 /* IPv4 length in VPP format */
#define VPP_IP6_ADDRESS_LEN 16 /* IPv6 length in VPP format */
#define VPP_MAC_ADDRESS_LEN 8 /* MAC length in VPP format */
/* IPv4 and IPv6 length in string format */
#define VPP_IP4_ADDRESS_STRING_LEN INET_ADDRSTRLEN //16, include '\0'
#define VPP_IP6_ADDRESS_STRING_LEN INET6_ADDRSTRLEN //46, include '\0'
#define VPP_IP4_PREFIX_STRING_LEN \
INET_ADDRSTRLEN + sizeof('/') + 2 // include '\0'
#define VPP_IP6_PREFIX_STRING_LEN \
INET6_ADDRSTRLEN + sizeof('/') + 3 // include '\0'
/**********************************MACROS**********************************/
#define ARG_CHECK(retval, arg) \
do \
{ \
if (NULL == (arg)) \
{ \
return (retval); \
} \
} \
while (0)
#define ARG_CHECK2(retval, arg1, arg2) \
ARG_CHECK(retval, arg1); \
ARG_CHECK(retval, arg2)
#define ARG_CHECK3(retval, arg1, arg2, arg3) \
ARG_CHECK(retval, arg1); \
ARG_CHECK(retval, arg2); \
ARG_CHECK(retval, arg3)
#define ARG_CHECK4(retval, arg1, arg2, arg3, arg4) \
ARG_CHECK(retval, arg1); \
ARG_CHECK(retval, arg2); \
ARG_CHECK(retval, arg3); \
ARG_CHECK(retval, arg4)
/* Suppress compiler warning about unused variable.
* This must be used only for callback function else suppress your unused
* parameter in function prototype. */
#define UNUSED(x) (void)x
#define VAPI_REQUEST_CB(api_name) \
static vapi_error_e \
api_name##_cb (struct vapi_ctx_s *ctx, void *callback_ctx, vapi_error_e rv, \
bool is_last, vapi_payload_##api_name##_reply * reply) \
{ \
UNUSED(ctx); UNUSED(rv); UNUSED(is_last); \
if (callback_ctx) { \
memcpy(callback_ctx, reply, sizeof(vapi_payload_##api_name##_reply)); \
} \
return reply->retval; \
}
#define VAPI_REQUEST_CB_EXTRA(api_name, member) \
static vapi_error_e \
api_name##_cb (struct vapi_ctx_s *ctx, void *callback_ctx, vapi_error_e rv, \
bool is_last, vapi_payload_##api_name##_reply * reply) \
{ \
UNUSED(ctx); UNUSED(rv); UNUSED(is_last); \
vapi_payload_##api_name##_reply **p = callback_ctx; \
int size = sizeof(vapi_payload_##api_name##_reply) + reply->member; \
if (p) { \
*p = malloc(size); \
if (!*p) { \
return VAPI_ENOMEM; \
} \
memcpy(*p, reply, size); \
} \
return reply->retval; \
}
#define VAPI_CALL_MODE(call_code, vapi_mode) \
do \
{ \
if (VAPI_MODE_BLOCKING == (vapi_mode)) \
{ \
rv = call_code; \
} \
else \
{ \
while (VAPI_EAGAIN == (rv = call_code)); \
if (rv != VAPI_OK) { /* try once more to get reply */ \
rv = vapi_dispatch (g_vapi_ctx); \
} \
} \
} \
while (0)
#define VAPI_CALL(call_code) VAPI_CALL_MODE(call_code, g_vapi_mode)
struct elt {
void *data; //vapi_payload structure
struct elt *next;
int id; //id of the stack element to count total nb of elements
};
static inline int push(struct elt **stack, void *data, int length)
{
struct elt *el;
//new stack node
el = malloc(sizeof(struct elt));
if (!el)
return -ENOMEM;
el->data = malloc(length);
if (!el->data) {
free(el);
return -ENOMEM;
}
memcpy(el->data, data, length);
if (*stack)
el->id = (*stack)->id + 1;
else
el->id = 0;
el->next = *stack; //point to old value of stack
*stack = el; //el is new stack head
return 0;
}
static inline void * pop(struct elt **stack)
{
struct elt *prev;
void *data;
if (!(*stack))
return NULL;
data = (*stack)->data; //get data at stack head
prev = *stack; //save stack to free memory later
*stack = (*stack)->next; //new stack
free(prev);
prev = NULL;
return data;
}
#define VAPI_DUMP_LIST_CB(api_name) \
static vapi_error_e \
api_name##_all_cb(vapi_ctx_t ctx, void *caller_ctx, vapi_error_e rv, bool is_last, \
vapi_payload_##api_name##_details *reply) \
{ \
UNUSED(ctx); UNUSED(rv); \
struct elt **stackp; \
\
if (is_last) { \
return VAPI_OK; \
} \
\
ARG_CHECK2(VAPI_EINVAL, caller_ctx, reply); \
\
stackp = (struct elt**) caller_ctx; \
push(stackp, reply, sizeof(*reply)); \
\
return VAPI_OK; \
}
#define foreach_stack_elt(stack) \
for(void *data = pop(&stack); data != NULL ; data = pop(&stack))
//for(void *data = pop(&stack); stack != NULL ; data = pop(&stack)) // No!!
int sc_aton(const char *cp, u8 * buf, size_t length);
char * sc_ntoa(const u8 * buf);
int sc_pton(int af, const char *cp, u8 * buf);
const char * sc_ntop(int af, const u8 * buf, char *addr);
/**
* @brief Function converts the u8 array from network byte order to host byte order.
*
* @param[in] host IPv4 address.
* @return host byte order value.
*/
uint32_t hardntohlu32(uint8_t host[4]);
/*
* VPP
*/
extern vapi_ctx_t g_vapi_ctx;
extern vapi_mode_e g_vapi_mode;
int sc_connect_vpp();
int sc_disconnect_vpp();
int sc_end_with(const char* str, const char* end);
#endif //__SC_VPP_COMMM_H__
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