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https://git.proxmox.com/git/mirror_iproute2
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80d0e62673
Since linux commit 22d6552f827e ("xfrm interface: fix management of
phydev"), phydev is not mandatory anymore.
Note that it also could be useful before the above commit to not force the
user to put a phydev (the kernel was checking it anyway).
For example, it was useful to not set it in case of x-netns, because the
phydev is not available in the current netns:
Before the patch:
$ ip netns add foo
$ ip link add xfrm1 type xfrm dev eth1 if_id 1
$ ip link set xfrm1 netns foo
$ ip -n foo link set xfrm1 type xfrm dev eth1 if_id 2
Cannot find device "eth1"
$ ip -n foo link set xfrm1 type xfrm if_id 2
must specify physical device
Fixes: 286446c1e8 ("ip: support for xfrm interfaces")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Matt Ellison <matt@arroyo.io>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* link_xfrm.c Virtual XFRM Interface driver module
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*
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* Authors: Matt Ellison <matt@arroyo.io>
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*/
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#include <string.h>
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#include <linux/if_link.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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#include "tunnel.h"
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static void xfrm_print_help(struct link_util *lu, int argc, char **argv,
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FILE *f)
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{
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fprintf(f,
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"Usage: ... %-4s dev [ PHYS_DEV ] [ if_id IF-ID ]\n"
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"\n"
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"Where: IF-ID := { 0x0..0xffffffff }\n",
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lu->id);
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}
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static int xfrm_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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unsigned int link = 0;
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__u32 if_id = 0;
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while (argc > 0) {
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if (!matches(*argv, "dev")) {
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NEXT_ARG();
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link = ll_name_to_index(*argv);
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if (!link)
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exit(nodev(*argv));
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} else if (!matches(*argv, "if_id")) {
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NEXT_ARG();
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if (!get_u32(&if_id, *argv, 0))
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addattr32(n, 1024, IFLA_XFRM_IF_ID, if_id);
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} else {
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xfrm_print_help(lu, argc, argv, stderr);
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return -1;
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}
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argc--; argv++;
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}
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if (link)
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addattr32(n, 1024, IFLA_XFRM_LINK, link);
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return 0;
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}
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static void xfrm_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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if (!tb)
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return;
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if (tb[IFLA_XFRM_IF_ID]) {
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__u32 id = rta_getattr_u32(tb[IFLA_XFRM_IF_ID]);
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print_0xhex(PRINT_ANY, "if_id", "if_id %#llx ", id);
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}
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}
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struct link_util xfrm_link_util = {
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.id = "xfrm",
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.maxattr = IFLA_XFRM_MAX,
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.parse_opt = xfrm_parse_opt,
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.print_opt = xfrm_print_opt,
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.print_help = xfrm_print_help,
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};
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