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/*
* Copyright (c) 2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#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;
}
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