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#include <marsio.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <rte_ether.h>
static char appsym[64] = "mrfwd";
static char dev_1_symbol[64] = "meth0";
uint64_t cpu_mask = 0x3c;
unsigned int nr_thread;
struct mr_instance * mr_instance = NULL;
struct mr_vdev * dev_1_handler = NULL;
struct mr_sendpath * to_dev_1_sendpath = NULL;
#define BURST_MAX 64
unsigned int nr_burst = 32;
/* options */
unsigned int opt_dump_packet_metadata = 1;
unsigned int opt_inject_by_deep_copy = 0;
void dump_packet_metadata(marsio_buff_t * buff)
{
#if 0
sid_t sids[MR_SID_LIST_MAXLEN];
int nr_sids = marsio_buff_get_sid_list(buff, sids, MR_SID_LIST_MAXLEN);
fprintf(stderr, "packet buf = %p, is_vlan_tci_set = %u, vlan_tci = %u\n", buff, is_vlan_tci_set, vlan_tci);
#endif
}
void * l2fwd_loop(void * arg)
{
uintptr_t sid = (uintptr_t)arg;
marsio_buff_t * rx_buff[BURST_MAX];
marsio_buff_t * tx_buff[BURST_MAX];
int ret = 0;
marsio_thread_init(mr_instance);
for (;;)
{
ret = marsio_recv_burst(dev_1_handler, sid, rx_buff, (int)nr_burst);
if (ret == 0)
{
marsio_poll_wait(mr_instance, &dev_1_handler, 1, sid, -1);
}
for (int i = 0; i < ret; i++)
{
if (opt_dump_packet_metadata)
{
dump_packet_metadata(rx_buff[i]);
}
if (opt_inject_by_deep_copy)
{
marsio_buff_t * orin_buff = rx_buff[i];
marsio_buff_t * deep_copy_buff = NULL;
marsio_buff_malloc_global(mr_instance, &deep_copy_buff, 1, MARSIO_SOCKET_ID_ANY, MARSIO_LCORE_ID_ANY);
/* copy the packet body */
unsigned int orin_pkt_len = marsio_buff_datalen(orin_buff);
const char * orin_pkt_ptr = marsio_buff_mtod(orin_buff);
char * deep_copy_ptr = marsio_buff_append(deep_copy_buff, orin_pkt_len);
memcpy(deep_copy_ptr, orin_pkt_ptr, orin_pkt_len);
/* get the route ctx */
char route_ctx[64];
marsio_buff_get_metadata(orin_buff, MR_BUFF_ROUTE_CTX, route_ctx, sizeof(route_ctx));
/* get the sids */
sid_t sids[MR_SID_LIST_MAXLEN];
int nr_sids = marsio_buff_get_sid_list(orin_buff, sids, MR_SID_LIST_MAXLEN);
#if 0
struct rte_ether_hdr * ether_hdr = (struct rte_ether_hdr *)orin_pkt_ptr;
if(ether_hdr->ether_type != 0xAAAA)
{
assert(nr_sids != 0);
}
#endif
/* set route ctx and sids for deep copy buff */
marsio_buff_set_metadata(deep_copy_buff, MR_BUFF_ROUTE_CTX, route_ctx, sizeof(route_ctx));
marsio_buff_set_sid_list(deep_copy_buff, sids, nr_sids);
tx_buff[i] = deep_copy_buff;
}
}
if (opt_inject_by_deep_copy)
{
marsio_buff_free(mr_instance, rx_buff, ret, MARSIO_SOCKET_ID_ANY, MARSIO_LCORE_ID_ANY);
marsio_send_burst(to_dev_1_sendpath, sid, tx_buff, (int)ret);
}
else
{
marsio_send_burst(to_dev_1_sendpath, sid, rx_buff, (int)ret);
}
}
}
int help()
{
return 0;
}
int main(int argc, char * argv[])
{
int opt = 0;
while ((opt = getopt(argc, argv, "s:d:a:c:b:h?")) != -1)
{
char * endptr = NULL;
switch (opt)
{
case '?':
case 'h':
{
help();
break;
}
case 's':
{
snprintf(dev_1_symbol, sizeof(dev_1_symbol), "%s", optarg);
break;
}
case 'a':
{
snprintf(appsym, sizeof(appsym), "%s", optarg);
break;
}
case 'c':
{
cpu_mask = strtoull(optarg, &endptr, 0);
if (cpu_mask == 0 && endptr == optarg) help();
break;
}
case 'b':
{
nr_burst = strtoull(optarg, &endptr, 0);
if (nr_burst == 0 && endptr == optarg) help();
break;
}
default:
help();
break;
}
}
mr_instance = marsio_create();
if (mr_instance == NULL)
{
fprintf(stderr, "Marsio instance create failed. ");
abort();
}
unsigned int opt_value = 1;
marsio_option_set(mr_instance, MARSIO_OPT_EXIT_WHEN_ERR, &opt_value, sizeof(opt_value));
marsio_option_set(mr_instance, MARSIO_OPT_THREAD_MASK, &cpu_mask, sizeof(cpu_mask));
marsio_init(mr_instance, appsym);
nr_thread = __builtin_popcountll(cpu_mask);
dev_1_handler = marsio_open_device(mr_instance, dev_1_symbol, nr_thread, nr_thread);
to_dev_1_sendpath = marsio_sendpath_create_by_vdev(dev_1_handler);
fprintf(stdout, "Thread Count = %d\n", nr_thread);
pthread_t tmp_pid[nr_thread];
for (int i = 0; i < nr_thread; i++)
{
pthread_create(&tmp_pid[i], NULL, l2fwd_loop, (void *)(uintptr_t)i);
}
for (int i = 0; i < nr_thread; i++)
{
pthread_join(tmp_pid[i], NULL);
}
marsio_destory(mr_instance);
fprintf(stdout, "L2FWD is terminated. ");
return 0;
}
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