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