shaba/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2025-03-31 14:50:15 +03:00
Code

sd-lldp: Add support to receive MUD

Browse Source
This commit is contained in:
Susant Sahani 2020-03-30 21:57:14 +02:00
parent 9afe05c149
commit f69b4ae885
3 changed files with 29 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
src/libsystemd-network/lldp-neighbor.c
View File

@ -50,6 +50,7 @@ static void lldp_neighbor_free(sd_lldp_neighbor *n) {
free(n->port_description);
free(n->system_name);
free(n->system_description);
free(n->mud_url);
free(n->chassis_id_as_string);
free(n->port_id_as_string);
free(n);
@ -292,9 +293,20 @@ int lldp_neighbor_parse(sd_lldp_neighbor *n) {
break;
case SD_LLDP_TYPE_PRIVATE:
case SD_LLDP_TYPE_PRIVATE: {
if (length < 4)
log_lldp("Found private TLV that is too short, ignoring.");
else {
/* RFC 8520: MUD URL */
if (memcmp(p, SD_LLDP_OUI_MUD, sizeof(SD_LLDP_OUI_MUD)) == 0 &&
p[sizeof(SD_LLDP_OUI_MUD)] == SD_LLDP_OUI_SUBTYPE_MUD_USAGE_DESCRIPTION) {
r = parse_string(&n->mud_url, p + sizeof(SD_LLDP_OUI_MUD) + 1,
length - 1 - sizeof(SD_LLDP_OUI_MUD));
if (r < 0)
return r;
}
}
}
break;
}
@ -593,6 +605,17 @@ _public_ int sd_lldp_neighbor_get_port_description(sd_lldp_neighbor *n, const ch
return 0;
}
_public_ int sd_lldp_neighbor_get_mud_url(sd_lldp_neighbor *n, const char **ret) {
assert_return(n, -EINVAL);
assert_return(ret, -EINVAL);
if (!n->mud_url)
return -ENODATA;
*ret = n->mud_url;
return 0;
}
_public_ int sd_lldp_neighbor_get_system_capabilities(sd_lldp_neighbor *n, uint16_t *ret) {
assert_return(n, -EINVAL);
assert_return(ret, -EINVAL);

1
src/libsystemd-network/lldp-neighbor.h
View File

@ -54,6 +54,7 @@ struct sd_lldp_neighbor {
char *port_description;
char *system_name;
char *system_description;
char *mud_url;
uint16_t port_vlan_id;

4
src/systemd/sd-lldp.h
View File

@ -96,6 +96,9 @@ enum {
#define SD_LLDP_OUI_802_1 (uint8_t[]) { 0x00, 0x80, 0xc2 }
#define SD_LLDP_OUI_802_3 (uint8_t[]) { 0x00, 0x12, 0x0f }
#define SD_LLDP_OUI_MUD (uint8_t[]) { 0x00, 0x00, 0x5E }
#define SD_LLDP_OUI_SUBTYPE_MUD_USAGE_DESCRIPTION 0x01
/* IEEE 802.1AB-2009 Annex E */
enum {
SD_LLDP_OUI_802_1_SUBTYPE_PORT_VLAN_ID = 1,
@ -169,6 +172,7 @@ int sd_lldp_neighbor_get_ttl(sd_lldp_neighbor *n, uint16_t *ret_sec);
int sd_lldp_neighbor_get_system_name(sd_lldp_neighbor *n, const char **ret);
int sd_lldp_neighbor_get_system_description(sd_lldp_neighbor *n, const char **ret);
int sd_lldp_neighbor_get_port_description(sd_lldp_neighbor *n, const char **ret);
int sd_lldp_neighbor_get_mud_url(sd_lldp_neighbor *n, const char **ret);
int sd_lldp_neighbor_get_system_capabilities(sd_lldp_neighbor *n, uint16_t *ret);
int sd_lldp_neighbor_get_enabled_capabilities(sd_lldp_neighbor *n, uint16_t *ret);