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#include <sched.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <netinet/ether.h>
#include <MESA/MESA_prof_load.h>
#include "log.h"
#include "packet_io.h"
#define MAX_RX_BURST 128
#define LOG_PKTIO "PACKET_IO"
#define MIN(a, b) ((a) > (b) ? (b) : (a))
struct config
{
int thread_num;
int cpu_mask[MAX_THREAD_NUM];
int rx_burst_max;
int bypass_traffic;
char app_symbol[256];
char app_device[256];
};
struct packet_io
{
struct config config;
struct mr_vdev *mr_dev;
struct mr_sendpath *mr_path;
struct mr_instance *mr_instance;
void *cb_args;
packet_handle_cb *callback;
};
static int packet_io_config(const char *profile, struct config *config)
{
MESA_load_profile_int_def(profile, "PACKET_IO", "thread_num", (int *)&(config->thread_num), 1);
MESA_load_profile_uint_range(profile, "PACKET_IO", "cpu_mask", MAX_THREAD_NUM, (unsigned int *)config->cpu_mask);
MESA_load_profile_int_def(profile, "PACKET_IO", "rx_burst_max", (int *)&(config->rx_burst_max), 1);
MESA_load_profile_int_def(profile, "PACKET_IO", "bypass_traffic", (int *)&(config->bypass_traffic), 0);
MESA_load_profile_string_nodef(profile, "PACKET_IO", "app_symbol", config->app_symbol, sizeof(config->app_symbol));
MESA_load_profile_string_nodef(profile, "PACKET_IO", "app_device", config->app_device, sizeof(config->app_device));
config->thread_num = MIN(config->thread_num, MAX_THREAD_NUM);
if (config->rx_burst_max > MAX_RX_BURST)
{
LOG_ERROR("%s: invalid rx_burst_max, exceeds limit %d", LOG_PKTIO, MAX_RX_BURST);
return -1;
}
if (strlen(config->app_symbol) == 0)
{
LOG_ERROR("%s: invalid app_symbol in %s", LOG_PKTIO, profile);
return -1;
}
if (strlen(config->app_device) == 0)
{
LOG_ERROR("%s: invalid app_device in %s", LOG_PKTIO, profile);
return -1;
}
LOG_DEBUG("%s: PACKET_IO->thread_num : %d", LOG_PKTIO, config->thread_num);
LOG_DEBUG("%s: PACKET_IO->rx_burst_max : %d", LOG_PKTIO, config->rx_burst_max);
LOG_DEBUG("%s: PACKET_IO->bypass_traffic : %d", LOG_PKTIO, config->bypass_traffic);
LOG_DEBUG("%s: PACKET_IO->app_symbol : %s", LOG_PKTIO, config->app_symbol);
LOG_DEBUG("%s: PACKET_IO->app_device : %s", LOG_PKTIO, config->app_device);
return 0;
}
static int marsio_buff_is_keepalive(char *raw_data, int raw_len)
{
if (raw_data == NULL || raw_len < (int)(sizeof(struct ethhdr)))
{
return 0;
}
struct ethhdr *eth_hdr = (struct ethhdr *)raw_data;
if (eth_hdr->h_proto == 0xAAAA)
{
return 1;
}
else
{
return 0;
}
}
struct packet_io *packet_io_create(const char *profile)
{
int opt = 1;
cpu_set_t coremask;
struct packet_io *handle = (struct packet_io *)calloc(1, sizeof(struct packet_io));
assert(handle != NULL);
if (packet_io_config(profile, &(handle->config)) != 0)
{
goto error_out;
}
CPU_ZERO(&coremask);
for (int i = 0; i < handle->config.thread_num; i++)
{
CPU_SET(handle->config.cpu_mask[i], &coremask);
}
handle->mr_instance = marsio_create();
if (handle->mr_instance == NULL)
{
LOG_ERROR("%s: unable to create marsio instance", LOG_PKTIO);
goto error_out;
}
if (marsio_option_set(handle->mr_instance, MARSIO_OPT_THREAD_MASK_IN_CPUSET, &coremask, sizeof(cpu_set_t)) != 0)
{
LOG_ERROR("%s: unable to set MARSIO_OPT_EXIT_WHEN_ERR option for marsio instance", LOG_PKTIO);
goto error_out;
}
if (marsio_option_set(handle->mr_instance, MARSIO_OPT_EXIT_WHEN_ERR, &opt, sizeof(opt)) != 0)
{
LOG_ERROR("%s: unable to set MARSIO_OPT_EXIT_WHEN_ERR option for marsio instance", LOG_PKTIO);
goto error_out;
}
if (marsio_init(handle->mr_instance, handle->config.app_symbol) != 0)
{
LOG_ERROR("%s: unable to initialize marsio instance", LOG_PKTIO);
goto error_out;
}
handle->mr_dev = marsio_open_device(handle->mr_instance, handle->config.app_device, handle->config.thread_num, handle->config.thread_num);
if (handle->mr_dev == NULL)
{
LOG_ERROR("%s: unable to open device %s", LOG_PKTIO, handle->config.app_device);
goto error_out;
}
handle->mr_path = marsio_sendpath_create_by_vdev(handle->mr_dev);
if (handle->mr_path == NULL)
{
LOG_ERROR("%s: unable to create sendpath for device %s", LOG_PKTIO, handle->config.app_device);
goto error_out;
}
return handle;
error_out:
packet_io_destory(handle);
return NULL;
}
void packet_io_destory(struct packet_io *handle)
{
if (handle)
{
if (handle->mr_path)
{
marsio_sendpath_destory(handle->mr_path);
handle->mr_path = NULL;
}
if (handle->mr_dev)
{
marsio_close_device(handle->mr_dev);
handle->mr_dev = NULL;
}
if (handle->mr_instance)
{
marsio_destory(handle->mr_instance);
handle->mr_instance = NULL;
}
free(handle);
handle = NULL;
}
}
void packet_io_set_callback(struct packet_io *handle, packet_handle_cb *cb, void *args)
{
handle->callback = cb;
handle->cb_args = args;
}
int packet_io_thread_init(struct packet_io *handle, int thread_index)
{
if (marsio_thread_init(handle->mr_instance) != 0)
{
LOG_ERROR("%s: unable to init marsio thread %d", LOG_PKTIO, thread_index);
return -1;
}
return 0;
}
void packet_io_thread_wait(struct packet_io *handle, int thread_index, int timeout_ms)
{
struct mr_vdev *vdevs[] = {
handle->mr_dev,
};
marsio_poll_wait(handle->mr_instance, vdevs, 1, thread_index, timeout_ms);
}
int packet_io_thread_polling(struct packet_io *handle, int thread_index)
{
int raw_len;
char *raw_data;
marsio_buff_t *rx_buff;
marsio_buff_t *rx_buffs[MAX_RX_BURST];
int nr_recv = marsio_recv_burst(handle->mr_dev, thread_index, rx_buffs, handle->config.rx_burst_max);
if (nr_recv <= 0)
{
return 0;
}
if (handle->config.bypass_traffic == 1)
{
marsio_send_burst(handle->mr_path, thread_index, rx_buffs, nr_recv);
return nr_recv;
}
for (int j = 0; j < nr_recv; j++)
{
rx_buff = rx_buffs[j];
raw_len = marsio_buff_datalen(rx_buff);
raw_data = marsio_buff_mtod(rx_buff);
if (marsio_buff_is_keepalive(raw_data, raw_len))
{
marsio_send_burst(handle->mr_path, thread_index, &rx_buff, 1);
}
else if (marsio_buff_is_ctrlbuf(rx_buff))
{
marsio_send_burst(handle->mr_path, thread_index, &rx_buff, 1);
}
else
{
if (handle->callback)
{
if (handle->callback(raw_data, raw_len, handle->cb_args) == ACTION_BYPASS)
{
marsio_send_burst(handle->mr_path, thread_index, &rx_buff, 1);
}
else
{
marsio_buff_free(handle->mr_instance, &rx_buff, 1, 0, thread_index);
}
}
else
{
marsio_send_burst(handle->mr_path, thread_index, &rx_buff, 1);
}
}
}
return nr_recv;
}
int packet_io_thread_number(struct packet_io *handle)
{
if (handle)
{
return handle->config.thread_num;
}
else
{
return 0;
}
}
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