From a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 16:18:53 +0200 Subject: Adding upstream version 6.1.0. Signed-off-by: Daniel Baumann --- ip/link_veth.c | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 ip/link_veth.c (limited to 'ip/link_veth.c') diff --git a/ip/link_veth.c b/ip/link_veth.c new file mode 100644 index 0000000..33e8f2b --- /dev/null +++ b/ip/link_veth.c @@ -0,0 +1,86 @@ +/* + * link_veth.c veth driver module + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Authors: Pavel Emelianov + * + */ + +#include +#include +#include + +#include "utils.h" +#include "ip_common.h" + +static void print_usage(FILE *f) +{ + printf("Usage: ip link type veth [peer ]\n" + "To get type 'ip link add help'\n"); +} + +static void usage(void) +{ + print_usage(stderr); +} + +static int veth_parse_opt(struct link_util *lu, int argc, char **argv, + struct nlmsghdr *n) +{ + char *type = NULL; + int err; + struct rtattr *data; + struct ifinfomsg *ifm, *peer_ifm; + unsigned int ifi_flags, ifi_change, ifi_index; + + if (strcmp(argv[0], "peer") != 0) { + usage(); + return -1; + } + + ifm = NLMSG_DATA(n); + ifi_flags = ifm->ifi_flags; + ifi_change = ifm->ifi_change; + ifi_index = ifm->ifi_index; + ifm->ifi_flags = 0; + ifm->ifi_change = 0; + ifm->ifi_index = 0; + + data = addattr_nest(n, 1024, VETH_INFO_PEER); + + n->nlmsg_len += sizeof(struct ifinfomsg); + + err = iplink_parse(argc - 1, argv + 1, (struct iplink_req *)n, &type); + if (err < 0) + return err; + + if (type) + duparg("type", argv[err]); + + peer_ifm = RTA_DATA(data); + peer_ifm->ifi_index = ifm->ifi_index; + peer_ifm->ifi_flags = ifm->ifi_flags; + peer_ifm->ifi_change = ifm->ifi_change; + ifm->ifi_flags = ifi_flags; + ifm->ifi_change = ifi_change; + ifm->ifi_index = ifi_index; + + addattr_nest_end(n, data); + return argc - 1 - err; +} + +static void veth_print_help(struct link_util *lu, int argc, char **argv, + FILE *f) +{ + print_usage(f); +} + +struct link_util veth_link_util = { + .id = "veth", + .parse_opt = veth_parse_opt, + .print_help = veth_print_help, +}; -- cgit v1.2.3