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platform: support specifying the fwmark in ip_route_get()

Browse source 
Add an optional argument to specify the fwmark, which will be used in
the next commits to return results that match a specific rule.
This commit is contained in:
Beniamino Galvani 2024-09-03 14:47:58 +02:00
parent 5c075eb762
commit 45535cbf9f
5 changed files with 17 additions and 3 deletions
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2
src/core/platform/tests/test-route.c
View file

@ -574,6 +574,7 @@ test_ip4_route_get(void)
result = nm_platform_ip_route_get(NM_PLATFORM_GET,
AF_INET,
&a,
0,
nmtst_get_rand_uint32() % 2 ? 0 : ifindex,
&route);
@ -766,6 +767,7 @@ test_ip6_route_get(void)
result = nm_platform_ip_route_get(NM_PLATFORM_GET,
AF_INET6,
a,
0,
nmtst_get_rand_uint32() % 2 ? 0 : ifindex,
&route);

1
src/core/vpn/nm-vpn-connection.c
View file

@ -1203,6 +1203,7 @@ _parent_device_l3cd_add_gateway_route(NML3ConfigData *l3cd,
r = nm_platform_ip_route_get(platform,
addr_family,
vpn_gw,
0,
ifindex,
(NMPObject **) &route_resolved);
if (r >= 0) {

6
src/libnm-platform/nm-linux-platform.c
View file

@ -10591,6 +10591,7 @@ static int
ip_route_get(NMPlatform *platform,
int addr_family,
gconstpointer address,
guint32 fwmark,
int oif_ifindex,
NMPObject **out_route)
{
@ -10625,6 +10626,11 @@ ip_route_get(NMPlatform *platform,
if (!_nl_addattr_l(&req.n, sizeof(req), RTA_DST, address, addr_len))
nm_assert_not_reached();
if (fwmark != 0) {
if (!_nl_addattr_l(&req.n, sizeof(req), RTA_MARK, &fwmark, sizeof(fwmark)))
nm_assert_not_reached();
}
if (oif_ifindex > 0) {
gint32 ii = oif_ifindex;

9
src/libnm-platform/nm-platform.c
View file

@ -5603,6 +5603,7 @@ int
nm_platform_ip_route_get(NMPlatform *self,
int addr_family,
gconstpointer address /* in_addr_t or struct in6_addr */,
guint32 fwmark,
int oif_ifindex,
NMPObject **out_route)
{
@ -5611,21 +5612,23 @@ nm_platform_ip_route_get(NMPlatform *self,
int result;
char buf[NM_INET_ADDRSTRLEN];
char buf_oif[64];
char buf_fwmark[64];
_CHECK_SELF(self, klass, FALSE);
g_return_val_if_fail(address, -NME_BUG);
g_return_val_if_fail(NM_IN_SET(addr_family, AF_INET, AF_INET6), -NME_BUG);
_LOGT("route: get IPv%c route for: %s%s",
_LOGT("route: get IPv%c route for: %s%s%s",
nm_utils_addr_family_to_char(addr_family),
inet_ntop(addr_family, address, buf, sizeof(buf)),
oif_ifindex > 0 ? nm_sprintf_buf(buf_oif, " oif %d", oif_ifindex) : "");
oif_ifindex > 0 ? nm_sprintf_buf(buf_oif, " oif %d", oif_ifindex) : "",
fwmark > 0 ? nm_sprintf_buf(buf_fwmark, " fwmark %u", fwmark) : "");
if (!klass->ip_route_get)
result = -NME_PL_OPNOTSUPP;
else {
result = klass->ip_route_get(self, addr_family, address, oif_ifindex, &route);
result = klass->ip_route_get(self, addr_family, address, fwmark, oif_ifindex, &route);
}
if (result < 0) {

2
src/libnm-platform/nm-platform.h
View file

@ -1321,6 +1321,7 @@ typedef struct {
int (*ip_route_get)(NMPlatform *self,
int addr_family,
gconstpointer address,
guint32 fwmark,
int oif_ifindex,
NMPObject **out_route);
@ -2432,6 +2433,7 @@ gboolean nm_platform_ip_route_flush(NMPlatform *self, int addr_family, int ifind
int nm_platform_ip_route_get(NMPlatform *self,
int addr_family,
gconstpointer address,
guint32 fwmark,
int oif_ifindex,
NMPObject **out_route);