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/* SPDX-License-Identifier: GPL-2.0 */
/*
* q_atm.c ATM.
*
* Hacked 1998-2000 by Werner Almesberger, EPFL ICA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <atm.h>
#include <linux/atmdev.h>
#include <linux/atmarp.h>
#include "utils.h"
#include "tc_util.h"
#define MAX_HDR_LEN 64
static int atm_parse_opt(struct qdisc_util *qu, int argc, char **argv,
struct nlmsghdr *n, const char *dev)
{
if (argc) {
fprintf(stderr, "Usage: atm\n");
return -1;
}
return 0;
}
static void explain(void)
{
fprintf(stderr,
"Usage: ... atm ( pvc ADDR | svc ADDR [ sap SAP ] ) [ qos QOS ] [ sndbuf BYTES ]\n"
" [ hdr HEX... ] [ excess ( CLASSID | clp ) ] [ clip ]\n");
}
static int atm_parse_class_opt(struct qdisc_util *qu, int argc, char **argv,
struct nlmsghdr *n, const char *dev)
{
struct sockaddr_atmsvc addr = {};
struct atm_qos qos;
struct atm_sap sap;
unsigned char hdr[MAX_HDR_LEN];
__u32 excess = 0;
struct rtattr *tail;
int sndbuf = 0;
int hdr_len = -1;
int set_clip = 0;
int s;
(void) text2qos("aal5,ubr:sdu=9180,rx:none", &qos, 0);
(void) text2sap("blli:l2=iso8802", &sap, 0);
while (argc > 0) {
if (!strcmp(*argv, "pvc")) {
NEXT_ARG();
if (text2atm(*argv, (struct sockaddr *) &addr,
sizeof(addr), T2A_PVC | T2A_NAME) < 0) {
explain();
return -1;
}
} else if (!strcmp(*argv,"svc")) {
NEXT_ARG();
if (text2atm(*argv, (struct sockaddr *) &addr,
sizeof(addr), T2A_SVC | T2A_NAME) < 0) {
explain();
return -1;
}
} else if (!strcmp(*argv,"qos")) {
NEXT_ARG();
if (text2qos(*argv, &qos, 0) < 0) {
explain();
return -1;
}
} else if (!strcmp(*argv,"sndbuf")) {
char *end;
NEXT_ARG();
sndbuf = strtol(*argv, &end, 0);
if (*end) {
explain();
return -1;
}
} else if (!strcmp(*argv,"sap")) {
NEXT_ARG();
if (addr.sas_family != AF_ATMSVC ||
text2sap(*argv, &sap, T2A_NAME) < 0) {
explain();
return -1;
}
} else if (!strcmp(*argv,"hdr")) {
unsigned char *ptr;
char *walk;
NEXT_ARG();
ptr = hdr;
for (walk = *argv; *walk; walk++) {
int tmp;
if (ptr == hdr+MAX_HDR_LEN) {
fprintf(stderr, "header is too long\n");
return -1;
}
if (*walk == '.') continue;
if (!isxdigit(walk[0]) || !walk[1] ||
!isxdigit(walk[1])) {
explain();
return -1;
}
sscanf(walk, "%2x", &tmp);
*ptr++ = tmp;
walk++;
}
hdr_len = ptr-hdr;
} else if (!strcmp(*argv,"excess")) {
NEXT_ARG();
if (!strcmp(*argv, "clp")) excess = 0;
else if (get_tc_classid(&excess, *argv)) {
explain();
return -1;
}
} else if (!strcmp(*argv,"clip")) {
set_clip = 1;
} else {
explain();
return 1;
}
argc--;
argv++;
}
s = socket(addr.sas_family, SOCK_DGRAM, 0);
if (s < 0) {
perror("socket");
return -1;
}
if (setsockopt(s, SOL_ATM, SO_ATMQOS, &qos, sizeof(qos)) < 0) {
perror("SO_ATMQOS");
return -1;
}
if (sndbuf)
if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf)) < 0) {
perror("SO_SNDBUF");
return -1;
}
if (addr.sas_family == AF_ATMSVC && setsockopt(s, SOL_ATM, SO_ATMSAP,
&sap, sizeof(sap)) < 0) {
perror("SO_ATMSAP");
return -1;
}
if (connect(s, (struct sockaddr *) &addr, addr.sas_family == AF_ATMPVC ?
sizeof(struct sockaddr_atmpvc) : sizeof(addr)) < 0) {
perror("connect");
return -1;
}
if (set_clip)
if (ioctl(s, ATMARP_MKIP, 0) < 0) {
perror("ioctl ATMARP_MKIP");
return -1;
}
tail = addattr_nest(n, 1024, TCA_OPTIONS);
addattr_l(n, 1024, TCA_ATM_FD, &s, sizeof(s));
if (excess)
addattr_l(n, 1024, TCA_ATM_EXCESS, &excess, sizeof(excess));
if (hdr_len != -1)
addattr_l(n, 1024, TCA_ATM_HDR, hdr, hdr_len);
addattr_nest_end(n, tail);
return 0;
}
static int atm_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
struct rtattr *tb[TCA_ATM_MAX+1];
char buffer[MAX_ATM_ADDR_LEN+1];
if (opt == NULL)
return 0;
parse_rtattr_nested(tb, TCA_ATM_MAX, opt);
if (tb[TCA_ATM_ADDR]) {
if (RTA_PAYLOAD(tb[TCA_ATM_ADDR]) <
sizeof(struct sockaddr_atmpvc))
fprintf(stderr, "ATM: address too short\n");
else {
if (atm2text(buffer, MAX_ATM_ADDR_LEN,
RTA_DATA(tb[TCA_ATM_ADDR]), A2T_PRETTY | A2T_NAME) <
0) fprintf(stderr, "atm2text error\n");
fprintf(f, "pvc %s ", buffer);
}
}
if (tb[TCA_ATM_HDR]) {
int i;
const __u8 *hdr = RTA_DATA(tb[TCA_ATM_HDR]);
fprintf(f, "hdr");
for (i = 0; i < RTA_PAYLOAD(tb[TCA_ATM_HDR]); i++)
fprintf(f, "%c%02x", i ? '.' : ' ', hdr[i]);
if (!i) fprintf(f, " .");
fprintf(f, " ");
}
if (tb[TCA_ATM_EXCESS]) {
__u32 excess;
if (RTA_PAYLOAD(tb[TCA_ATM_EXCESS]) < sizeof(excess))
fprintf(stderr, "ATM: excess class ID too short\n");
else {
excess = rta_getattr_u32(tb[TCA_ATM_EXCESS]);
if (!excess) fprintf(f, "excess clp ");
else {
char buf[64];
print_tc_classid(buf, sizeof(buf), excess);
fprintf(f, "excess %s ", buf);
}
}
}
if (tb[TCA_ATM_STATE]) {
static const char *map[] = { ATM_VS2TXT_MAP };
int state;
if (RTA_PAYLOAD(tb[TCA_ATM_STATE]) < sizeof(state))
fprintf(stderr, "ATM: state field too short\n");
else {
state = rta_getattr_u32(tb[TCA_ATM_STATE]);
fprintf(f, "%s ", map[state]);
}
}
return 0;
}
struct qdisc_util atm_qdisc_util = {
.id = "atm",
.parse_qopt = atm_parse_opt,
.print_qopt = atm_print_opt,
.parse_copt = atm_parse_class_opt,
.print_copt = atm_print_opt,
};
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