libnftnl 1.2.9
nft-expr_hash-test.c
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * (C) 2016 by Laura Garcia <nevola@gmail.com>
4 */
5
6#include <stdio.h>
7#include <stdlib.h>
8#include <string.h>
9#include <netinet/in.h>
10#include <netinet/ip.h>
11
12#include <linux/netfilter/nf_tables.h>
13#include <libmnl/libmnl.h>
14#include <libnftnl/rule.h>
15#include <libnftnl/expr.h>
16
17static int test_ok = 1;
18
19static void print_err(const char *msg)
20{
21 test_ok = 0;
22 printf("\033[31mERROR:\e[0m %s\n", msg);
23}
24
25static void cmp_nftnl_expr(struct nftnl_expr *rule_a,
26 struct nftnl_expr *rule_b)
27{
28 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_SREG) !=
29 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_SREG))
30 print_err("Expr NFTNL_EXPR_HASH_SREG mismatches");
31 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_DREG) !=
32 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_DREG))
33 print_err("Expr NFTNL_EXPR_HASH_DREG mismatches");
34 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_MODULUS) !=
35 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_MODULUS))
36 print_err("Expr NFTNL_EXPR_HASH_MODULUS mismatches");
37 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_SEED) !=
38 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_SEED))
39 print_err("Expr NFTNL_EXPR_HASH_SEED mismatches");
40 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_OFFSET) !=
41 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_OFFSET))
42 print_err("Expr NFTNL_EXPR_HASH_OFFSET mismatches");
43 if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_TYPE) !=
44 nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_TYPE))
45 print_err("Expr NFTNL_EXPR_HASH_TYPE mismatches");
46}
47
48int main(int argc, char *argv[])
49{
50 struct nftnl_rule *a, *b;
51 struct nftnl_expr *ex;
52 struct nlmsghdr *nlh;
53 char buf[4096];
54 struct nftnl_expr_iter *iter_a, *iter_b;
55 struct nftnl_expr *rule_a, *rule_b;
56
57 a = nftnl_rule_alloc();
58 b = nftnl_rule_alloc();
59 if (a == NULL || b == NULL)
60 print_err("OOM");
61 ex = nftnl_expr_alloc("hash");
62 if (ex == NULL)
63 print_err("OOM");
64
65 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_SREG, 0x1234568);
66 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_DREG, 0x78123456);
67 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_MODULUS, 0x78123456);
68 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_SEED, 0x78123456);
69 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_OFFSET, 0x3612845);
70 nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_TYPE, NFT_HASH_JENKINS);
71
72 nftnl_rule_add_expr(a, ex);
73
74 nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, AF_INET, 0, 1234);
75 nftnl_rule_nlmsg_build_payload(nlh, a);
76 if (nftnl_rule_nlmsg_parse(nlh, b) < 0)
77 print_err("parsing problems");
78
79 iter_a = nftnl_expr_iter_create(a);
80 iter_b = nftnl_expr_iter_create(b);
81 if (iter_a == NULL || iter_b == NULL)
82 print_err("OOM");
83
84 rule_a = nftnl_expr_iter_next(iter_a);
85 rule_b = nftnl_expr_iter_next(iter_b);
86 if (rule_a == NULL || rule_b == NULL)
87 print_err("OOM");
88
89 cmp_nftnl_expr(rule_a, rule_b);
90
91 if (nftnl_expr_iter_next(iter_a) != NULL ||
92 nftnl_expr_iter_next(iter_b) != NULL)
93 print_err("More 1 expr.");
94
95 nftnl_expr_iter_destroy(iter_a);
96 nftnl_expr_iter_destroy(iter_b);
97 nftnl_rule_free(a);
98 nftnl_rule_free(b);
99
100 if (!test_ok)
101 exit(EXIT_FAILURE);
102
103 printf("%s: \033[32mOK\e[0m\n", argv[0]);
104 return EXIT_SUCCESS;
105}