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c1fbb54f4b
Testing LibAliasOut functionality. This concentrates the typical use case of initiating data transfers from the inside. Provide a exhaustive test for the data structure in order to check for performance improvements. Reviewed by: kp MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D30335
74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
#include <atf-c.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <netinet/in.h>
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#include "util.h"
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int
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randcmp(const void *a, const void *b)
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{
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int res, r = rand();
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(void)a;
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(void)b;
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res = (r/4 < RAND_MAX/9) ? 1
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: (r/5 < RAND_MAX/9) ? 0
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: -1;
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return (res);
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}
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void
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hexdump(void *p, size_t len)
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{
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size_t i;
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unsigned char *c = p;
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for (i = 0; i < len; i++) {
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printf(" %02x", c[i]);
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switch (i & 0xf) {
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case 0xf: printf("\n"); break;
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case 0x7: printf(" "); break;
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default: break;
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}
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}
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if ((i & 0xf) != 0x0)
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printf("\n");
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}
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struct ip *
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ip_packet(struct in_addr src, struct in_addr dst, u_char protocol, size_t len)
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{
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struct ip * p;
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ATF_REQUIRE(len >= 64 && len <= IP_MAXPACKET);
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p = calloc(1, len);
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ATF_REQUIRE(p != NULL);
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p->ip_v = IPVERSION;
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p->ip_hl = sizeof(*p)/4;
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p->ip_len = htons(len);
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p->ip_ttl = IPDEFTTL;
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p->ip_src = src;
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p->ip_dst = dst;
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p->ip_p = protocol;
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ATF_REQUIRE(p->ip_hl == 5);
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return (p);
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}
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struct udphdr *
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set_udp(struct ip *p, u_short sport, u_short dport) {
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uint32_t *up = (void *)p;
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struct udphdr *u = (void *)&(up[p->ip_hl]);
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int payload = ntohs(p->ip_len) - 4*p->ip_hl;
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ATF_REQUIRE(payload >= (int)sizeof(*u));
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p->ip_p = IPPROTO_UDP;
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u->uh_sport = htons(sport);
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u->uh_dport = htons(dport);
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u->uh_ulen = htons(payload);
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return (u);
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}
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