fdo-mirrors/NetworkManager
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git synced 2026-01-07 06:40:18 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

dhcp: nettools: support option 249 (Microsoft Classless Static Route)

Browse source 
From [1]:

  The length and the data format for the Microsoft Classless Static
  Route Option are exactly the same as those specified for the
  Classless Static Route Option in [RFC3442]; the only difference is
  that Option Code 249 should be used instead of or in addition to
  Option Code 121.

Use routes from option 249 when option 121 is not present, as already
done by the dhclient backend.

[1] https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dhcpe/f9c19c79-1c7f-4746-b555-0c0fc523f3f9

https://bugzilla.redhat.com/show_bug.cgi?id=1959461
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/851
This commit is contained in:
Beniamino Galvani 2021-05-11 19:10:09 +02:00
parent d7594ae9c9
commit e320beb330
1 changed files with 15 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
src/core/dhcp/nm-dhcp-nettools.c
View file

@ -342,16 +342,16 @@ lease_parse_routes(NDhcp4ClientLease *lease,
const guint8 *l_data;
gsize l_data_len;
int r;
guint i;
for (i = 0; i < 2; i++) {
const guint8 option_code = (i == 0) ? NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE
: NM_DHCP_OPTION_DHCP4_PRIVATE_CLASSLESS_STATIC_ROUTE;
if (_client_lease_query(lease, option_code, &l_data, &l_data_len) != 0)
continue;
r = _client_lease_query(lease,
NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
&l_data,
&l_data_len);
if (r == 0) {
nm_str_buf_reset(sbuf);
has_classless = TRUE;
while (lease_option_consume_route(&l_data, &l_data_len, TRUE, &dest, &plen, &gateway)) {
_nm_utils_inet4_ntop(dest, dest_str);
_nm_utils_inet4_ntop(gateway, gateway_str);
@ -359,6 +359,11 @@ lease_parse_routes(NDhcp4ClientLease *lease,
nm_str_buf_append_required_delimiter(sbuf, ' ');
nm_str_buf_append_printf(sbuf, "%s/%d %s", dest_str, (int) plen, gateway_str);
if (has_classless) {
/* Ignore private option if the standard one is present */
continue;
}
if (plen == 0) {
/* if there are multiple default routes, we add them with differing
* metrics. */
@ -384,10 +389,8 @@ lease_parse_routes(NDhcp4ClientLease *lease,
NULL);
}
nm_dhcp_option_add_option(options,
AF_INET,
NM_DHCP_OPTION_DHCP4_CLASSLESS_STATIC_ROUTE,
nm_str_buf_get_str(sbuf));
has_classless = TRUE;
nm_dhcp_option_add_option(options, AF_INET, option_code, nm_str_buf_get_str(sbuf));
}
r = _client_lease_query(lease, NM_DHCP_OPTION_DHCP4_STATIC_ROUTE, &l_data, &l_data_len);