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/* SPDX-License-Identifier: GPL-2.0 */
/*
* iplink_rmnet.c RMNET device support
*
* Authors: Daniele Palmas <dnlplm@gmail.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "utils.h"
#include "ip_common.h"
static void print_explain(FILE *f)
{
fprintf(f,
"Usage: ... rmnet mux_id MUXID\n"
"\n"
"MUXID := 1-254\n"
);
}
static void explain(void)
{
print_explain(stderr);
}
static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
struct ifla_rmnet_flags flags = { };
__u16 mux_id;
while (argc > 0) {
if (matches(*argv, "mux_id") == 0) {
NEXT_ARG();
if (get_u16(&mux_id, *argv, 0))
invarg("mux_id is invalid", *argv);
addattr16(n, 1024, IFLA_RMNET_MUX_ID, mux_id);
} else if (matches(*argv, "ingress-deaggregation") == 0) {
flags.mask = ~0;
flags.flags |= RMNET_FLAGS_INGRESS_DEAGGREGATION;
} else if (matches(*argv, "ingress-map-commands") == 0) {
flags.mask = ~0;
flags.flags |= RMNET_FLAGS_INGRESS_MAP_COMMANDS;
} else if (matches(*argv, "ingress-map-chksumv4") == 0) {
flags.mask = ~0;
flags.flags |= RMNET_FLAGS_INGRESS_MAP_CKSUMV4;
} else if (matches(*argv, "egress-map-chksumv4") == 0) {
flags.mask = ~0;
flags.flags |= RMNET_FLAGS_EGRESS_MAP_CKSUMV4;
} else if (matches(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "rmnet: unknown command \"%s\"?\n", *argv);
explain();
return -1;
}
argc--, argv++;
}
if (flags.mask)
addattr_l(n, 1024, IFLA_RMNET_FLAGS, &flags, sizeof(flags));
return 0;
}
static void rmnet_print_flags(FILE *fp, __u32 flags)
{
if (flags & RMNET_FLAGS_INGRESS_DEAGGREGATION)
print_string(PRINT_ANY, NULL, "%s ", "ingress-deaggregation");
if (flags & RMNET_FLAGS_INGRESS_MAP_COMMANDS)
print_string(PRINT_ANY, NULL, "%s ", "ingress-map-commands");
if (flags & RMNET_FLAGS_INGRESS_MAP_CKSUMV4)
print_string(PRINT_ANY, NULL, "%s ", "ingress-map-chksumv4");
if (flags & RMNET_FLAGS_EGRESS_MAP_CKSUMV4)
print_string(PRINT_ANY, NULL, "%s ", "egress-map-cksumv4");
}
static void rmnet_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
struct ifla_vlan_flags *flags;
if (!tb)
return;
if (!tb[IFLA_RMNET_MUX_ID] ||
RTA_PAYLOAD(tb[IFLA_RMNET_MUX_ID]) < sizeof(__u16))
return;
print_uint(PRINT_ANY,
"mux_id",
"mux_id %u ",
rta_getattr_u16(tb[IFLA_RMNET_MUX_ID]));
if (tb[IFLA_RMNET_FLAGS]) {
if (RTA_PAYLOAD(tb[IFLA_RMNET_FLAGS]) < sizeof(*flags))
return;
flags = RTA_DATA(tb[IFLA_RMNET_FLAGS]);
rmnet_print_flags(f, flags->flags);
}
}
static void rmnet_print_help(struct link_util *lu, int argc, char **argv,
FILE *f)
{
print_explain(f);
}
struct link_util rmnet_link_util = {
.id = "rmnet",
.maxattr = IFLA_RMNET_MAX,
.parse_opt = rmnet_parse_opt,
.print_opt = rmnet_print_opt,
.print_help = rmnet_print_help,
};
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