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network-generator: parse vlan ID from vlan interface name
Fixes #33954.
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commit
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@ -14,6 +14,7 @@
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#include "string-table.h"
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#include "string-util.h"
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#include "strv.h"
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#include "vlan-util.h"
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/*
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# .network
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@ -965,6 +966,24 @@ static int parse_cmdline_rd_peerdns(Context *context, const char *key, const cha
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return network_set_dhcp_use_dns(context, "", r);
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}
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static int extract_vlan_id(const char *vlan_name, uint16_t *ret) {
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assert(!isempty(vlan_name));
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assert(ret);
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/* From dracut.cmdline(7):
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* We support the four styles of vlan names:
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* VLAN_PLUS_VID (vlan0005),
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* VLAN_PLUS_VID_NO_PAD (vlan5),
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* DEV_PLUS_VID (eth0.0005), and
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* DEV_PLUS_VID_NO_PAD (eth0.5). */
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for (const char *p = vlan_name + strlen(vlan_name) - 1; p > vlan_name; p--)
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if (!ascii_isdigit(*p))
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return parse_vlanid(p+1, ret);
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return -EINVAL;
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}
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static int parse_cmdline_vlan(Context *context, const char *key, const char *value) {
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const char *name, *p;
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NetDev *netdev;
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@ -989,6 +1008,10 @@ static int parse_cmdline_vlan(Context *context, const char *key, const char *val
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return log_debug_errno(r, "Failed to create VLAN device for '%s': %m", name);
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}
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r = extract_vlan_id(name, &netdev->vlan_id);
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if (r < 0)
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return log_debug_errno(r, "Failed to parse VLAN ID from VLAN device name '%s': %m", name);
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return network_set_vlan(context, p + 1, name);
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}
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@ -1367,6 +1390,13 @@ void netdev_dump(NetDev *netdev, FILE *f) {
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if (netdev->mtu > 0)
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fprintf(f, "MTUBytes=%" PRIu32 "\n", netdev->mtu);
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if (streq(netdev->kind, "vlan")) {
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fprintf(f,
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"\n[VLAN]\n"
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"Id=%u\n",
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netdev->vlan_id);
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}
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}
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void link_dump(Link *link, FILE *f) {
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@ -79,6 +79,9 @@ struct NetDev {
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char *ifname;
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char *kind;
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uint32_t mtu;
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/* [VLAN] */
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uint16_t vlan_id;
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};
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struct Link {
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@ -375,6 +375,38 @@ int main(int argc, char *argv[]) {
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"MTUBytes=1530\n"
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);
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test_netdev_one("vlan123", "vlan", "vlan123:eth0",
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"[NetDev]\n"
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"Kind=vlan\n"
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"Name=vlan123\n"
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"\n[VLAN]\n"
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"Id=123\n"
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);
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test_netdev_one("vlan0013", "vlan", "vlan0013:eth0",
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"[NetDev]\n"
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"Kind=vlan\n"
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"Name=vlan0013\n"
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"\n[VLAN]\n"
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"Id=11\n" /* 0013 (octal) -> 11 */
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);
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test_netdev_one("eth0.123", "vlan", "eth0.123:eth0",
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"[NetDev]\n"
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"Kind=vlan\n"
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"Name=eth0.123\n"
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"\n[VLAN]\n"
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"Id=123\n"
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);
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test_netdev_one("eth0.0013", "vlan", "eth0.0013:eth0",
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"[NetDev]\n"
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"Kind=vlan\n"
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"Name=eth0.0013\n"
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"\n[VLAN]\n"
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"Id=11\n" /* 0013 (octal) -> 11 */
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);
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test_link_one("hogehoge", "ifname", "hogehoge:00:11:22:33:44:55",
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"[Match]\n"
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"MACAddress=00:11:22:33:44:55\n"
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