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lldp: expose "mud-url" LLDP attribute for the MUD usage description

Browse source 
See-also: https://github.com/systemd/systemd/pull/15234
See-also: c4f8796bf8/tests/lldp_mudurl.pcap
This commit is contained in:
Thomas Haller 2020-06-14 12:31:17 +02:00
parent 4043f82790
commit dc08b42f45
No known key found for this signature in database
GPG key ID: 29C2366E4DFC5728
3 changed files with 54 additions and 4 deletions
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2
libnm-core/nm-dbus-interface.h
View file

@ -880,6 +880,8 @@ typedef enum /*< flags >*/ {
#define NM_LLDP_ATTR_IEEE_802_3_POWER_VIA_MDI "ieee-802-3-power-via-mdi"
#define NM_LLDP_ATTR_IEEE_802_3_MAX_FRAME_SIZE "ieee-802-3-max-frame-size"
#define NM_LLDP_ATTR_MUD_URL "mud-url"
/* These are deprecated in favor of NM_LLDP_ATTR_IEEE_802_1_VLANS,
* which can report multiple VLANs */
#define NM_LLDP_ATTR_IEEE_802_1_VID "ieee-802-1-vid"

21
src/devices/nm-lldp-listener.c
View file

@ -539,6 +539,7 @@ lldp_neighbor_to_variant (LldpNeighbor *neigh)
GVariant *v_ieee_802_3_mac_phy_conf = NULL;
GVariant *v_ieee_802_3_power_via_mdi = NULL;
GVariant *v_ieee_802_3_max_frame_size = NULL;
GVariant *v_mud_url = NULL;
GVariantBuilder tmp_builder;
GVariant *tmp_variant;
@ -580,8 +581,7 @@ lldp_neighbor_to_variant (LldpNeighbor *neigh)
break;
}
if ( memcmp (oui, SD_LLDP_OUI_802_1, sizeof (oui)) != 0
&& memcmp (oui, SD_LLDP_OUI_802_3, sizeof (oui)) != 0)
if (len <= 6)
continue;
/* skip over leading TLV, OUI and subtype */
@ -597,8 +597,6 @@ lldp_neighbor_to_variant (LldpNeighbor *neigh)
nm_assert (memcmp (data8, check_hdr, sizeof check_hdr) == 0);
}
#endif
if (len <= 6)
continue;
data8 += 6;
len -= 6;
@ -690,6 +688,19 @@ lldp_neighbor_to_variant (LldpNeighbor *neigh)
v_ieee_802_3_max_frame_size = g_variant_new_uint32 (unaligned_read_be16 (data8));
break;
}
} else if (memcmp (oui, SD_LLDP_OUI_MUD, sizeof (oui)) == 0) {
switch (subtype) {
case SD_LLDP_OUI_SUBTYPE_MUD_USAGE_DESCRIPTION:
if (!v_mud_url) {
gs_free char *s_free = NULL;
const char *s;
s = format_string (data8, len, TRUE, &s_free);
if (s)
v_mud_url = g_variant_new_string (s);
}
break;
}
}
} while (sd_lldp_neighbor_tlv_next (neigh->neighbor_sd) > 0);
@ -713,6 +724,8 @@ lldp_neighbor_to_variant (LldpNeighbor *neigh)
nm_g_variant_builder_add_sv (&builder, NM_LLDP_ATTR_IEEE_802_3_POWER_VIA_MDI, v_ieee_802_3_power_via_mdi);
if (v_ieee_802_3_max_frame_size)
nm_g_variant_builder_add_sv (&builder, NM_LLDP_ATTR_IEEE_802_3_MAX_FRAME_SIZE, v_ieee_802_3_max_frame_size);
if (v_mud_url)
nm_g_variant_builder_add_sv (&builder, NM_LLDP_ATTR_MUD_URL, v_mud_url);
}
return (neigh->variant = g_variant_ref_sink (g_variant_builder_end (&builder)));

35
src/devices/tests/test-lldp.c
View file

@ -553,6 +553,40 @@ test_parse_frames (gconstpointer test_data)
/*****************************************************************************/
TEST_RECV_FRAME_DEFINE (_test_parse_frames_3,
/* https://github.com/the-tcpdump-group/tcpdump/blob/c4f8796bf8bec740621a360eded236d8991ea00f/tests/lldp_mudurl.pcap */
"{'raw': <[byte 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e, 0x00, 0x23, 0x54, 0xc2, 0x57, 0x02, 0x88, 0xcc, 0x02, 0x07, 0x04, 0x00, 0x23, 0x54, 0xc2, 0x57, 0x02, 0x04, 0x07, 0x03, 0x00, 0x23, 0x54, 0xc2, 0x57, 0x02, 0x06, 0x02, 0x00, 0x78, 0x0a, 0x1c, 0x75, 0x70, 0x73, 0x74, 0x61, 0x69, 0x72, 0x73, 0x2e, 0x6f, 0x66, 0x63, 0x6f, 0x75, 0x72, 0x73, 0x65, 0x69, 0x6d, 0x72, 0x69, 0x67, 0x68, 0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x0c, 0x5c, 0x55, 0x62, 0x75, 0x6e, 0x74, 0x75, 0x20, 0x31, 0x34, 0x2e, 0x30, 0x34, 0x2e, 0x35, 0x20, 0x4c, 0x54, 0x53, 0x20, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x33, 0x2e, 0x31, 0x33, 0x2e, 0x30, 0x2d, 0x31, 0x30, 0x36, 0x2d, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x69, 0x63, 0x20, 0x23, 0x31, 0x35, 0x33, 0x2d, 0x55, 0x62, 0x75, 0x6e, 0x74, 0x75, 0x20, 0x53, 0x4d, 0x50, 0x20, 0x54, 0x75, 0x65, 0x20, 0x44, 0x65, 0x63, 0x20, 0x36, 0x20, 0x31, 0x35, 0x3a, 0x34, 0x35, 0x3a, 0x31, 0x33, 0x20, 0x55, 0x54, 0x43, 0x20, 0x32, 0x30, 0x31, 0x36, 0x20, 0x69, 0x36, 0x38, 0x36, 0x0e, 0x04, 0x00, 0x9c, 0x00, 0x08, 0x10, 0x0c, 0x05, 0x01, 0x3e, 0x0c, 0xad, 0x72, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x10, 0x18, 0x11, 0x02, 0x20, 0x01, 0x08, 0xa8, 0x10, 0x06, 0x00, 0x04, 0x02, 0x23, 0x54, 0xff, 0xfe, 0xc2, 0x57, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x08, 0x04, 0x65, 0x74, 0x68, 0x30, 0xfe, 0x09, 0x00, 0x12, 0x0f, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x09, 0x00, 0x12, 0x0f, 0x01, 0x03, 0xec, 0xc3, 0x00, 0x10, 0xfe, 0x40, 0x00, 0x00, 0x5e, 0x01, 0x68, 0x74, 0x74, 0x70, 0x73, 0x3a, 0x2f, 0x2f, 0x69, 0x6d, 0x72, 0x69, 0x67, 0x68, 0x74, 0x2e, 0x6d, 0x75, 0x64, 0x2e, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x2e, 0x77, 0x65, 0x6c, 0x6c, 0x2d, 0x6b, 0x6e, 0x6f, 0x77, 0x6e, 0x2f, 0x6d, 0x75, 0x64, 0x2f, 0x76, 0x31, 0x2f, 0x76, 0x6f, 0x6d, 0x69, 0x74, 0x76, 0x32, 0x2e, 0x30, 0x00, 0x00]>, 'chassis-id-type': <uint32 4>, 'chassis-id': <'00:23:54:C2:57:02'>, 'port-id-type': <uint32 3>, 'port-id': <'00:23:54:C2:57:02'>, 'destination': <'nearest-bridge'>, 'port-description': <'eth0'>, 'system-name': <'upstairs.ofcourseimright.com'>, 'system-description': <'Ubuntu 14.04.5 LTS Linux 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6 15:45:13 UTC 2016 i686'>, 'system-capabilities': <uint32 156>, 'management-addresses': <[{'address-subtype': <uint32 1>, 'address': <[byte 0x3e, 0x0c, 0xad, 0x72]>, 'interface-number-subtype': <uint32 2>, 'interface-number': <uint32 2>, 'object-id': <@ay []>}, {'address-subtype': <uint32 2>, 'address': <[byte 0x20, 0x01, 0x08, 0xa8, 0x10, 0x06, 0x00, 0x04, 0x02, 0x23, 0x54, 0xff, 0xfe, 0xc2, 0x57, 0x02]>, 'interface-number-subtype': <uint32 2>, 'interface-number': <uint32 2>, 'object-id': <@ay []>}]>, 'ieee-802-3-mac-phy-conf': <{'autoneg': <uint32 3>, 'pmd-autoneg-cap': <uint32 60611>, 'operational-mau-type': <uint32 16>}>, 'mud-url': <'https://imright.mud.example.com/.well-known/mud/v1/vomitv2.0'>}",
0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e, /* ethernet destination */
0x00, 0x23, 0x54, 0xc2, 0x57, 0x02, /* ethernet source */
0x88, 0xcc, /* ethernet type */
0x02, 0x07, 0x04, 0x00, 0x23, 0x54, 0xc2, 0x57, 0x02, 0x04, 0x07, 0x03, 0x00, 0x23,
0x54, 0xc2, 0x57, 0x02, 0x06, 0x02, 0x00, 0x78, 0x0a, 0x1c, 0x75, 0x70, 0x73, 0x74,
0x61, 0x69, 0x72, 0x73, 0x2e, 0x6f, 0x66, 0x63, 0x6f, 0x75, 0x72, 0x73, 0x65, 0x69,
0x6d, 0x72, 0x69, 0x67, 0x68, 0x74, 0x2e, 0x63, 0x6f, 0x6d, 0x0c, 0x5c, 0x55, 0x62,
0x75, 0x6e, 0x74, 0x75, 0x20, 0x31, 0x34, 0x2e, 0x30, 0x34, 0x2e, 0x35, 0x20, 0x4c,
0x54, 0x53, 0x20, 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x33, 0x2e, 0x31, 0x33, 0x2e,
0x30, 0x2d, 0x31, 0x30, 0x36, 0x2d, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x69, 0x63, 0x20,
0x23, 0x31, 0x35, 0x33, 0x2d, 0x55, 0x62, 0x75, 0x6e, 0x74, 0x75, 0x20, 0x53, 0x4d,
0x50, 0x20, 0x54, 0x75, 0x65, 0x20, 0x44, 0x65, 0x63, 0x20, 0x36, 0x20, 0x31, 0x35,
0x3a, 0x34, 0x35, 0x3a, 0x31, 0x33, 0x20, 0x55, 0x54, 0x43, 0x20, 0x32, 0x30, 0x31,
0x36, 0x20, 0x69, 0x36, 0x38, 0x36, 0x0e, 0x04, 0x00, 0x9c, 0x00, 0x08, 0x10, 0x0c,
0x05, 0x01, 0x3e, 0x0c, 0xad, 0x72, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x10, 0x18,
0x11, 0x02, 0x20, 0x01, 0x08, 0xa8, 0x10, 0x06, 0x00, 0x04, 0x02, 0x23, 0x54, 0xff,
0xfe, 0xc2, 0x57, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x08, 0x04, 0x65, 0x74,
0x68, 0x30, 0xfe, 0x09, 0x00, 0x12, 0x0f, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0xfe,
0x09, 0x00, 0x12, 0x0f, 0x01, 0x03, 0xec, 0xc3, 0x00, 0x10, 0xfe, 0x40, 0x00, 0x00,
0x5e, 0x01, 0x68, 0x74, 0x74, 0x70, 0x73, 0x3a, 0x2f, 0x2f, 0x69, 0x6d, 0x72, 0x69,
0x67, 0x68, 0x74, 0x2e, 0x6d, 0x75, 0x64, 0x2e, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c,
0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x2e, 0x77, 0x65, 0x6c, 0x6c, 0x2d, 0x6b, 0x6e,
0x6f, 0x77, 0x6e, 0x2f, 0x6d, 0x75, 0x64, 0x2f, 0x76, 0x31, 0x2f, 0x76, 0x6f, 0x6d,
0x69, 0x74, 0x76, 0x32, 0x2e,
0x30, 0x00, 0x00, /* ethernet trailer */
);
/*****************************************************************************/
NMTstpSetupFunc const _nmtstp_setup_platform_func = nm_linux_platform_setup;
void
@ -574,4 +608,5 @@ _nmtstp_setup_tests (void)
g_test_add_data_func ("/lldp/parse-frames/0", &_test_recv_data0_frame0, test_parse_frames);
g_test_add_data_func ("/lldp/parse-frames/1", &_test_recv_data1_frame0, test_parse_frames);
g_test_add_data_func ("/lldp/parse-frames/2", &_test_recv_data2_frame0_ttl1, test_parse_frames);
g_test_add_data_func ("/lldp/parse-frames/3", &_test_parse_frames_3, test_parse_frames);
}