libdabba/tests/test-packet-mmap.c

   1
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6 #include <errno.h>
   7 #include <assert.h>
   8 #include <sys/socket.h>
   9 #include <sys/user.h>
  10 #include <arpa/inet.h>
  11
  12 #include <linux/if_ether.h>
  13
  14 #include <libdabba/macros.h>
  15 #include <libdabba/interface.h>
  16 #include <libdabba/packet-mmap.h>
  17
  18 #define MIN_FRAME_NR (1<<3)
  19 #define MAX_FRAME_NR (1<<16)
  20
  21 int main(int argc, char **argv)
  22 {
  23         int rc;
  24         size_t a, i, fnr;
  25         int pf_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
  26         struct packet_mmap pkt_rx;
  27         enum packet_mmap_type types[] = { PACKET_MMAP_RX, PACKET_MMAP_TX };
  28         enum packet_mmap_frame_size fsize[] =
  29             { PACKET_MMAP_ETH_FRAME_LEN, PACKET_MMAP_JUMBO_FRAME_LEN,
  30                 PACKET_MMAP_SUPER_JUMBO_FRAME_LEN
  31         };
  32
  33         assert(argc);
  34         assert(argv);
  35
  36         assert(pf_sock > 0);
  37
  38         for (a = 0; a < ARRAY_SIZE(types); a++)
  39                 for (i = 0; i < ARRAY_SIZE(fsize); i++)
  40                         for (fnr = MIN_FRAME_NR; fnr < MAX_FRAME_NR; fnr <<= 1) {
  41                                 rc = ldab_packet_mmap_create(&pkt_rx,
  42                                                             ANY_INTERFACE,
  43                                                             pf_sock, types[a],
  44                                                             fsize[i], fnr);
  45
  46                                 printf("packet mmap type: %i frame number=%zu",
  47                                        types[a], fnr);
  48                                 printf(" frame size=%i rc=%s\n", fsize[i],
  49                                        strerror(rc));
  50                                 /*
  51                                  * Tolerate ENOMEM as we cannot accurately foresee
  52                                  * if the allocation will fail or succeed
  53                                  */
  54                                 assert(rc == 0 || rc == ENOMEM);
  55                                 ldab_packet_mmap_destroy(&pkt_rx);
  56                         }
  57
  58         return (EXIT_SUCCESS);
  59 }