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| #include "tests.h"
| #include <stdio.h>
| #include <sys/socket.h>
| #include <linux/if_packet.h>
|
| static const char *errstr;
|
| static long
| set_tpacket_req(int optname, void *optval, socklen_t len)
| {
| long rc = setsockopt(-1, SOL_PACKET, optname, optval, len);
| errstr = sprintrc(rc);
| return rc;
| }
|
| static void
| test_tpacket_req(const int optname, const char *const optname_str)
| {
| TAIL_ALLOC_OBJECT_CONST_PTR(struct tpacket_req, tpreq);
| socklen_t len;
|
| /* setsockopt with optname unknown */
| set_tpacket_req(-1, NULL, 0);
| printf("setsockopt(-1, SOL_PACKET, %#x /* PACKET_??? */, NULL, 0) = %s\n",
| -1, errstr);
|
| /* classic setsockopt */
| len = sizeof(struct tpacket_req);
| set_tpacket_req(optname, tpreq, len);
| printf("setsockopt(-1, SOL_PACKET, %s, {tp_block_size=%u,"
| " tp_block_nr=%u, tp_frame_size=%u, tp_frame_nr=%u}, %d) = %s\n",
| optname_str, tpreq->tp_block_size, tpreq->tp_block_nr,
| tpreq->tp_frame_size, tpreq->tp_frame_nr, len, errstr);
|
| /* setsockopt with optlen larger than usual */
| len = len + 1;
| set_tpacket_req(optname, tpreq, len);
| printf("setsockopt(-1, SOL_PACKET, %s, %p,"
| " %d) = %s\n", optname_str, tpreq, len, errstr);
| }
|
| int
| main(void)
| {
| test_tpacket_req(ARG_STR(PACKET_RX_RING));
| #ifdef PACKET_TX_RING
| test_tpacket_req(ARG_STR(PACKET_TX_RING));
| #endif
|
| puts("+++ exited with 0 +++");
| return 0;
| }
|
|
