// SPDX-License-Identifier: GPL-2.0+
/*
* Author: Justin Iurman ([email protected])
*
* IOAM tester for IPv6, see ioam6.sh for details on each test case.
*/
#include <arpa/inet.h>
#include <errno.h>
#include <limits.h>
#include <linux/const.h>
#include <linux/ioam6.h>
#include <linux/ipv6.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
struct ioam_config {
__u32 id;
__u64 wide;
__u16 ingr_id;
__u16 egr_id;
__u32 ingr_wide;
__u32 egr_wide;
__u32 ns_data;
__u64 ns_wide;
__u32 sc_id;
__u8 hlim;
char *sc_data;
};
/*
* Be careful if you modify structs below - everything MUST be kept synchronized
* with configurations inside ioam6.sh and always reflect the same.
*/
static struct ioam_config node1 = {
.id = 1,
.wide = 11111111,
.ingr_id = 0xffff, /* default value */
.egr_id = 101,
.ingr_wide = 0xffffffff, /* default value */
.egr_wide = 101101,
.ns_data = 0xdeadbee0,
.ns_wide = 0xcafec0caf00dc0de,
.sc_id = 777,
.sc_data = "something that will be 4n-aligned",
.hlim = 64,
};
static struct ioam_config node2 = {
.id = 2,
.wide = 22222222,
.ingr_id = 201,
.egr_id = 202,
.ingr_wide = 201201,
.egr_wide = 202202,
.ns_data = 0xdeadbee1,
.ns_wide = 0xcafec0caf11dc0de,
.sc_id = 666,
.sc_data = "Hello there -Obi",
.hlim = 63,
};
static struct ioam_config node3 = {
.id = 3,
.wide = 33333333,
.ingr_id = 301,
.egr_id = 0xffff, /* default value */
.ingr_wide = 301301,
.egr_wide = 0xffffffff, /* default value */
.ns_data = 0xdeadbee2,
.ns_wide = 0xcafec0caf22dc0de,
.sc_id = 0xffffff, /* default value */
.sc_data = NULL,
.hlim = 62,
};
enum {
/**********
* OUTPUT *
**********/
TEST_OUT_UNDEF_NS,
TEST_OUT_NO_ROOM,
TEST_OUT_BIT0,
TEST_OUT_BIT1,
TEST_OUT_BIT2,
TEST_OUT_BIT3,
TEST_OUT_BIT4,
TEST_OUT_BIT5,
TEST_OUT_BIT6,
TEST_OUT_BIT7,
TEST_OUT_BIT8,
TEST_OUT_BIT9,
TEST_OUT_BIT10,
TEST_OUT_BIT11,
TEST_OUT_BIT22,
TEST_OUT_FULL_SUPP_TRACE,
/*********
* INPUT *
*********/
TEST_IN_UNDEF_NS,
TEST_IN_NO_ROOM,
TEST_IN_OFLAG,
TEST_IN_BIT0,
TEST_IN_BIT1,
TEST_IN_BIT2,
TEST_IN_BIT3,
TEST_IN_BIT4,
TEST_IN_BIT5,
TEST_IN_BIT6,
TEST_IN_BIT7,
TEST_IN_BIT8,
TEST_IN_BIT9,
TEST_IN_BIT10,
TEST_IN_BIT11,
TEST_IN_BIT22,
TEST_IN_FULL_SUPP_TRACE,
/**********
* GLOBAL *
**********/
TEST_FWD_FULL_SUPP_TRACE,
__TEST_MAX,
};
static int check_ioam_header(int tid, struct ioam6_trace_hdr *ioam6h,
__u32 trace_type, __u16 ioam_ns)
{
if (__be16_to_cpu(ioam6h->namespace_id) != ioam_ns ||
__be32_to_cpu(ioam6h->type_be32) != (trace_type << 8))
return 1;
switch (tid) {
case TEST_OUT_UNDEF_NS:
case TEST_IN_UNDEF_NS:
return ioam6h->overflow ||
ioam6h->nodelen != 1 ||
ioam6h->remlen != 1;
case TEST_OUT_NO_ROOM:
case TEST_IN_NO_ROOM:
case TEST_IN_OFLAG:
return !ioam6h->overflow ||
ioam6h->nodelen != 2 ||
ioam6h->remlen != 1;
case TEST_OUT_BIT0:
case TEST_IN_BIT0:
case TEST_OUT_BIT1:
case TEST_IN_BIT1:
case TEST_OUT_BIT2:
case TEST_IN_BIT2:
case TEST_OUT_BIT3:
case TEST_IN_BIT3:
case TEST_OUT_BIT4:
case TEST_IN_BIT4:
case TEST_OUT_BIT5:
case TEST_IN_BIT5:
case TEST_OUT_BIT6:
case TEST_IN_BIT6:
case TEST_OUT_BIT7:
case TEST_IN_BIT7:
case TEST_OUT_BIT11:
case TEST_IN_BIT11:
return ioam6h->overflow ||
ioam6h->nodelen != 1 ||
ioam6h->remlen;
case TEST_OUT_BIT8:
case TEST_IN_BIT8:
case TEST_OUT_BIT9:
case TEST_IN_BIT9:
case TEST_OUT_BIT10:
case TEST_IN_BIT10:
return ioam6h->overflow ||
ioam6h->nodelen != 2 ||
ioam6h->remlen;
case TEST_OUT_BIT22:
case TEST_IN_BIT22:
return ioam6h->overflow ||
ioam6h->nodelen ||
ioam6h->remlen;
case TEST_OUT_FULL_SUPP_TRACE:
case TEST_IN_FULL_SUPP_TRACE:
case TEST_FWD_FULL_SUPP_TRACE:
return ioam6h->overflow ||
ioam6h->nodelen != 15 ||
ioam6h->remlen;
default:
break;
}
return 1;
}
static int check_ioam6_data(__u8 **p, struct ioam6_trace_hdr *ioam6h,
const struct ioam_config cnf)
{
unsigned int len;
__u8 aligned;
__u64 raw64;
__u32 raw32;
if (ioam6h->type.bit0) {
raw32 = __be32_to_cpu(*((__u32 *)*p));
if (cnf.hlim != (raw32 >> 24) || cnf.id != (raw32 & 0xffffff))
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit1) {
raw32 = __be32_to_cpu(*((__u32 *)*p));
if (cnf.ingr_id != (raw32 >> 16) ||
cnf.egr_id != (raw32 & 0xffff))
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit2)
*p += sizeof(__u32);
if (ioam6h->type.bit3)
*p += sizeof(__u32);
if (ioam6h->type.bit4) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit5) {
if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ns_data)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit6)
*p += sizeof(__u32);
if (ioam6h->type.bit7) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit8) {
raw64 = __be64_to_cpu(*((__u64 *)*p));
if (cnf.hlim != (raw64 >> 56) ||
cnf.wide != (raw64 & 0xffffffffffffff))
return 1;
*p += sizeof(__u64);
}
if (ioam6h->type.bit9) {
if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ingr_wide)
return 1;
*p += sizeof(__u32);
if (__be32_to_cpu(*((__u32 *)*p)) != cnf.egr_wide)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit10) {
if (__be64_to_cpu(*((__u64 *)*p)) != cnf.ns_wide)
return 1;
*p += sizeof(__u64);
}
if (ioam6h->type.bit11) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit12) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit13) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit14) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit15) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit16) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit17) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit18) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit19) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit20) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit21) {
if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
return 1;
*p += sizeof(__u32);
}
if (ioam6h->type.bit22) {
len = cnf.sc_data ? strlen(cnf.sc_data) : 0;
aligned = cnf.sc_data ? __ALIGN_KERNEL(len, 4) : 0;
raw32 = __be32_to_cpu(*((__u32 *)*p));
if (aligned != (raw32 >> 24) * 4 ||
cnf.sc_id != (raw32 & 0xffffff))
return 1;
*p += sizeof(__u32);
if (cnf.sc_data) {
if (strncmp((char *)*p, cnf.sc_data, len))
return 1;
*p += len;
aligned -= len;
while (aligned--) {
if (**p != '\0')
return 1;
*p += sizeof(__u8);
}
}
}
return 0;
}
static int check_ioam_header_and_data(int tid, struct ioam6_trace_hdr *ioam6h,
__u32 trace_type, __u16 ioam_ns)
{
__u8 *p;
if (check_ioam_header(tid, ioam6h, trace_type, ioam_ns))
return 1;
p = ioam6h->data + ioam6h->remlen * 4;
switch (tid) {
case TEST_OUT_BIT0:
case TEST_OUT_BIT1:
case TEST_OUT_BIT2:
case TEST_OUT_BIT3:
case TEST_OUT_BIT4:
case TEST_OUT_BIT5:
case TEST_OUT_BIT6:
case TEST_OUT_BIT7:
case TEST_OUT_BIT8:
case TEST_OUT_BIT9:
case TEST_OUT_BIT10:
case TEST_OUT_BIT11:
case TEST_OUT_BIT22:
case TEST_OUT_FULL_SUPP_TRACE:
return check_ioam6_data(&p, ioam6h, node1);
case TEST_IN_BIT0:
case TEST_IN_BIT1:
case TEST_IN_BIT2:
case TEST_IN_BIT3:
case TEST_IN_BIT4:
case TEST_IN_BIT5:
case TEST_IN_BIT6:
case TEST_IN_BIT7:
case TEST_IN_BIT8:
case TEST_IN_BIT9:
case TEST_IN_BIT10:
case TEST_IN_BIT11:
case TEST_IN_BIT22:
case TEST_IN_FULL_SUPP_TRACE:
{
__u32 tmp32 = node2.egr_wide;
__u16 tmp16 = node2.egr_id;
int res;
node2.egr_id = 0xffff;
node2.egr_wide = 0xffffffff;
res = check_ioam6_data(&p, ioam6h, node2);
node2.egr_id = tmp16;
node2.egr_wide = tmp32;
return res;
}
case TEST_FWD_FULL_SUPP_TRACE:
if (check_ioam6_data(&p, ioam6h, node3))
return 1;
if (check_ioam6_data(&p, ioam6h, node2))
return 1;
return check_ioam6_data(&p, ioam6h, node1);
default:
break;
}
return 1;
}
static int str2id(const char *tname)
{
if (!strcmp("out_undef_ns", tname))
return TEST_OUT_UNDEF_NS;
if (!strcmp("out_no_room", tname))
return TEST_OUT_NO_ROOM;
if (!strcmp("out_bit0", tname))
return TEST_OUT_BIT0;
if (!strcmp("out_bit1", tname))
return TEST_OUT_BIT1;
if (!strcmp("out_bit2", tname))
return TEST_OUT_BIT2;
if (!strcmp("out_bit3", tname))
return TEST_OUT_BIT3;
if (!strcmp("out_bit4", tname))
return TEST_OUT_BIT4;
if (!strcmp("out_bit5", tname))
return TEST_OUT_BIT5;
if (!strcmp("out_bit6", tname))
return TEST_OUT_BIT6;
if (!strcmp("out_bit7", tname))
return TEST_OUT_BIT7;
if (!strcmp("out_bit8", tname))
return TEST_OUT_BIT8;
if (!strcmp("out_bit9", tname))
return TEST_OUT_BIT9;
if (!strcmp("out_bit10", tname))
return TEST_OUT_BIT10;
if (!strcmp("out_bit11", tname))
return TEST_OUT_BIT11;
if (!strcmp("out_bit22", tname))
return TEST_OUT_BIT22;
if (!strcmp("out_full_supp_trace", tname))
return TEST_OUT_FULL_SUPP_TRACE;
if (!strcmp("in_undef_ns", tname))
return TEST_IN_UNDEF_NS;
if (!strcmp("in_no_room", tname))
return TEST_IN_NO_ROOM;
if (!strcmp("in_oflag", tname))
return TEST_IN_OFLAG;
if (!strcmp("in_bit0", tname))
return TEST_IN_BIT0;
if (!strcmp("in_bit1", tname))
return TEST_IN_BIT1;
if (!strcmp("in_bit2", tname))
return TEST_IN_BIT2;
if (!strcmp("in_bit3", tname))
return TEST_IN_BIT3;
if (!strcmp("in_bit4", tname))
return TEST_IN_BIT4;
if (!strcmp("in_bit5", tname))
return TEST_IN_BIT5;
if (!strcmp("in_bit6", tname))
return TEST_IN_BIT6;
if (!strcmp("in_bit7", tname))
return TEST_IN_BIT7;
if (!strcmp("in_bit8", tname))
return TEST_IN_BIT8;
if (!strcmp("in_bit9", tname))
return TEST_IN_BIT9;
if (!strcmp("in_bit10", tname))
return TEST_IN_BIT10;
if (!strcmp("in_bit11", tname))
return TEST_IN_BIT11;
if (!strcmp("in_bit22", tname))
return TEST_IN_BIT22;
if (!strcmp("in_full_supp_trace", tname))
return TEST_IN_FULL_SUPP_TRACE;
if (!strcmp("fwd_full_supp_trace", tname))
return TEST_FWD_FULL_SUPP_TRACE;
return -1;
}
static int get_u32(__u32 *val, const char *arg, int base)
{
unsigned long res;
char *ptr;
if (!arg || !*arg)
return -1;
res = strtoul(arg, &ptr, base);
if (!ptr || ptr == arg || *ptr)
return -1;
if (res == ULONG_MAX && errno == ERANGE)
return -1;
if (res > 0xFFFFFFFFUL)
return -1;
*val = res;
return 0;
}
static int get_u16(__u16 *val, const char *arg, int base)
{
unsigned long res;
char *ptr;
if (!arg || !*arg)
return -1;
res = strtoul(arg, &ptr, base);
if (!ptr || ptr == arg || *ptr)
return -1;
if (res == ULONG_MAX && errno == ERANGE)
return -1;
if (res > 0xFFFFUL)
return -1;
*val = res;
return 0;
}
static int (*func[__TEST_MAX])(int, struct ioam6_trace_hdr *, __u32, __u16) = {
[TEST_OUT_UNDEF_NS] = check_ioam_header,
[TEST_OUT_NO_ROOM] = check_ioam_header,
[TEST_OUT_BIT0] = check_ioam_header_and_data,
[TEST_OUT_BIT1] = check_ioam_header_and_data,
[TEST_OUT_BIT2] = check_ioam_header_and_data,
[TEST_OUT_BIT3] = check_ioam_header_and_data,
[TEST_OUT_BIT4] = check_ioam_header_and_data,
[TEST_OUT_BIT5] = check_ioam_header_and_data,
[TEST_OUT_BIT6] = check_ioam_header_and_data,
[TEST_OUT_BIT7] = check_ioam_header_and_data,
[TEST_OUT_BIT8] = check_ioam_header_and_data,
[TEST_OUT_BIT9] = check_ioam_header_and_data,
[TEST_OUT_BIT10] = check_ioam_header_and_data,
[TEST_OUT_BIT11] = check_ioam_header_and_data,
[TEST_OUT_BIT22] = check_ioam_header_and_data,
[TEST_OUT_FULL_SUPP_TRACE] = check_ioam_header_and_data,
[TEST_IN_UNDEF_NS] = check_ioam_header,
[TEST_IN_NO_ROOM] = check_ioam_header,
[TEST_IN_OFLAG] = check_ioam_header,
[TEST_IN_BIT0] = check_ioam_header_and_data,
[TEST_IN_BIT1] = check_ioam_header_and_data,
[TEST_IN_BIT2] = check_ioam_header_and_data,
[TEST_IN_BIT3] = check_ioam_header_and_data,
[TEST_IN_BIT4] = check_ioam_header_and_data,
[TEST_IN_BIT5] = check_ioam_header_and_data,
[TEST_IN_BIT6] = check_ioam_header_and_data,
[TEST_IN_BIT7] = check_ioam_header_and_data,
[TEST_IN_BIT8] = check_ioam_header_and_data,
[TEST_IN_BIT9] = check_ioam_header_and_data,
[TEST_IN_BIT10] = check_ioam_header_and_data,
[TEST_IN_BIT11] = check_ioam_header_and_data,
[TEST_IN_BIT22] = check_ioam_header_and_data,
[TEST_IN_FULL_SUPP_TRACE] = check_ioam_header_and_data,
[TEST_FWD_FULL_SUPP_TRACE] = check_ioam_header_and_data,
};
int main(int argc, char **argv)
{
int fd, size, hoplen, tid, ret = 1, on = 1;
struct ioam6_hdr *opt;
struct cmsghdr *cmsg;
struct msghdr msg;
struct iovec iov;
__u8 buffer[512];
__u32 tr_type;
__u16 ioam_ns;
__u8 *ptr;
if (argc != 5)
goto out;
tid = str2id(argv[1]);
if (tid < 0 || !func[tid])
goto out;
if (get_u32(&tr_type, argv[2], 16) ||
get_u16(&ioam_ns, argv[3], 0))
goto out;
fd = socket(PF_INET6, SOCK_RAW,
!strcmp(argv[4], "encap") ? IPPROTO_IPV6 : IPPROTO_ICMPV6);
if (fd < 0)
goto out;
setsockopt(fd, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &on, sizeof(on));
iov.iov_len = 1;
iov.iov_base = malloc(CMSG_SPACE(sizeof(buffer)));
if (!iov.iov_base)
goto close;
recv:
memset(&msg, 0, sizeof(msg));
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = buffer;
msg.msg_controllen = CMSG_SPACE(sizeof(buffer));
size = recvmsg(fd, &msg, 0);
if (size <= 0)
goto close;
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
if (cmsg->cmsg_level != IPPROTO_IPV6 ||
cmsg->cmsg_type != IPV6_HOPOPTS ||
cmsg->cmsg_len < sizeof(struct ipv6_hopopt_hdr))
continue;
ptr = (__u8 *)CMSG_DATA(cmsg);
hoplen = (ptr[1] + 1) << 3;
ptr += sizeof(struct ipv6_hopopt_hdr);
while (hoplen > 0) {
opt = (struct ioam6_hdr *)ptr;
if (opt->opt_type == IPV6_TLV_IOAM &&
opt->type == IOAM6_TYPE_PREALLOC) {
ptr += sizeof(*opt);
ret = func[tid](tid,
(struct ioam6_trace_hdr *)ptr,
tr_type, ioam_ns);
goto close;
}
ptr += opt->opt_len + 2;
hoplen -= opt->opt_len + 2;
}
}
goto recv;
close:
free(iov.iov_base);
close(fd);
out:
return ret;
}
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