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-rw-r--r--src/libsystemd-network/lldp-tlv.c139
-rw-r--r--src/libsystemd-network/lldp-tlv.h5
-rw-r--r--src/libsystemd-network/lldp.h13
-rw-r--r--src/libsystemd-network/sd-lldp.c2
-rw-r--r--src/systemd/sd-lldp.h7
5 files changed, 164 insertions, 2 deletions
diff --git a/src/libsystemd-network/lldp-tlv.c b/src/libsystemd-network/lldp-tlv.c
index b967f34a99..b3f0bfb1e9 100644
--- a/src/libsystemd-network/lldp-tlv.c
+++ b/src/libsystemd-network/lldp-tlv.c
@@ -277,7 +277,7 @@ int tlv_packet_parse_pdu(tlv_packet *m, uint16_t size) {
p = m->pdu;
- /* extract ethernet herader */
+ /* extract ethernet header */
memcpy(&m->mac, p, ETH_ALEN);
p += sizeof(struct ether_header);
@@ -297,6 +297,17 @@ int tlv_packet_parse_pdu(tlv_packet *m, uint16_t size) {
}
p += 2;
+
+ if (section->type == LLDP_TYPE_PRIVATE &&
+ section->length >= LLDP_OUI_LEN + 1) {
+ section->oui = p;
+ p += LLDP_OUI_LEN;
+ section->subtype = *p++;
+
+ section->length -= LLDP_OUI_LEN + 1;
+ l += LLDP_OUI_LEN + 1;
+ }
+
section->data = p;
LIST_FIND_TAIL(section, m->sections, tail);
@@ -313,6 +324,7 @@ int lldp_tlv_packet_enter_container(tlv_packet *m, uint16_t type) {
tlv_section *s;
assert_return(m, -EINVAL);
+ assert_return(type != LLDP_TYPE_PRIVATE, -EINVAL);
LIST_FOREACH(section, s, m->sections)
if (s->type == type)
@@ -331,6 +343,34 @@ int lldp_tlv_packet_enter_container(tlv_packet *m, uint16_t type) {
return 0;
}
+int lldp_tlv_packet_enter_container_oui(tlv_packet *m, const uint8_t *oui, uint8_t subtype) {
+ tlv_section *s;
+
+ assert_return(m, -EINVAL);
+ assert_return(oui, -EINVAL);
+
+ LIST_FOREACH(section, s, m->sections) {
+ if (s->type == LLDP_TYPE_PRIVATE &&
+ s->oui &&
+ s->subtype == subtype &&
+ !memcmp(s->oui, oui, LLDP_OUI_LEN))
+ break;
+ }
+
+ if (!s)
+ return -1;
+
+ m->container = s;
+
+ m->container->read_pos = s->data;
+ if (!m->container->read_pos) {
+ m->container = 0;
+ return -1;
+ }
+
+ return 0;
+}
+
int lldp_tlv_packet_exit_container(tlv_packet *m) {
assert_return(m, -EINVAL);
@@ -495,6 +535,103 @@ int sd_lldp_packet_read_system_capability(tlv_packet *tlv, uint16_t *data) {
return lldp_tlv_packet_read_u16_tlv(tlv, LLDP_TYPE_SYSTEM_CAPABILITIES, data);
}
+int sd_lldp_packet_read_port_vlan_id(tlv_packet *tlv, uint16_t *id) {
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container_oui(tlv, LLDP_OUI_802_1, LLDP_OUI_SUBTYPE_802_1_PORT_VLAN_ID);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u16(tlv, id);
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
+int sd_lldp_packet_read_port_protocol_vlan_id(sd_lldp_packet *tlv, uint8_t *flags, uint16_t *id) {
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container_oui(tlv, LLDP_OUI_802_1, LLDP_OUI_SUBTYPE_802_1_PORT_PROTOCOL_VLAN_ID);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u8(tlv, flags);
+ if (r >= 0)
+ r = tlv_packet_read_u16(tlv, id);
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
+int sd_lldp_packet_read_vlan_name(tlv_packet *tlv, uint16_t *vlan_id, char **name, uint16_t *length) {
+ int r;
+ uint8_t len = 0;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container_oui(tlv, LLDP_OUI_802_1, LLDP_OUI_SUBTYPE_802_1_VLAN_NAME);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u16(tlv, vlan_id);
+ if (r >= 0)
+ r = tlv_packet_read_u8(tlv, &len);
+ if (r >= 0)
+ r = tlv_packet_read_string(tlv, name, length);
+
+ if (r >= 0 && len < *length)
+ *length = len;
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
+int sd_lldp_packet_read_management_vid(tlv_packet *tlv, uint16_t *id) {
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container_oui(tlv, LLDP_OUI_802_1, LLDP_OUI_SUBTYPE_802_1_MANAGEMENT_VID);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u16(tlv, id);
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
+int sd_lldp_packet_read_link_aggregation(sd_lldp_packet *tlv, uint8_t *status, uint32_t *id) {
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container_oui(tlv, LLDP_OUI_802_1, LLDP_OUI_SUBTYPE_802_1_LINK_AGGREGATION);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u8(tlv, status);
+ if (r >= 0)
+ r = tlv_packet_read_u32(tlv, id);
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
int sd_lldp_packet_get_destination_type(tlv_packet *tlv, int *dest) {
assert_return(tlv, -EINVAL);
assert_return(dest, -EINVAL);
diff --git a/src/libsystemd-network/lldp-tlv.h b/src/libsystemd-network/lldp-tlv.h
index 5af06b40ca..2d2c776be6 100644
--- a/src/libsystemd-network/lldp-tlv.h
+++ b/src/libsystemd-network/lldp-tlv.h
@@ -33,9 +33,13 @@
typedef struct tlv_packet tlv_packet;
typedef struct tlv_section tlv_section;
+#define LLDP_OUI_LEN 3
+
struct tlv_section {
uint16_t type;
uint16_t length;
+ uint8_t *oui;
+ uint8_t subtype;
uint8_t *read_pos;
uint8_t *data;
@@ -83,6 +87,7 @@ int tlv_packet_append_u32(tlv_packet *m, uint32_t data);
int tlv_packet_append_string(tlv_packet *m, char *data, uint16_t size);
int lldp_tlv_packet_enter_container(tlv_packet *m, uint16_t type);
+int lldp_tlv_packet_enter_container_oui(tlv_packet *m, const uint8_t *oui, uint8_t subtype);
int lldp_tlv_packet_exit_container(tlv_packet *m);
int tlv_packet_read_bytes(tlv_packet *m, uint8_t **data, uint16_t *data_length);
diff --git a/src/libsystemd-network/lldp.h b/src/libsystemd-network/lldp.h
index 5e4b283e26..19e5cc5f41 100644
--- a/src/libsystemd-network/lldp.h
+++ b/src/libsystemd-network/lldp.h
@@ -113,3 +113,16 @@ typedef enum LLDPMedCapability {
LLDP_MED_CAPABILITY_MAX,
LLDP_MED_CAPABILITY_INVALID = -1,
} LLDPMedCapability;
+
+#define LLDP_OUI_802_1 (uint8_t[]) { 0x00, 0x80, 0xc2 }
+#define LLDP_OUI_802_3 (uint8_t[]) { 0x00, 0x12, 0x0f }
+
+enum {
+ LLDP_OUI_SUBTYPE_802_1_PORT_VLAN_ID = 1,
+ LLDP_OUI_SUBTYPE_802_1_PORT_PROTOCOL_VLAN_ID = 2,
+ LLDP_OUI_SUBTYPE_802_1_VLAN_NAME = 3,
+ LLDP_OUI_SUBTYPE_802_1_PROTOCOL_IDENTITY = 4,
+ LLDP_OUI_SUBTYPE_802_1_VID_USAGE_DIGEST = 5,
+ LLDP_OUI_SUBTYPE_802_1_MANAGEMENT_VID = 6,
+ LLDP_OUI_SUBTYPE_802_1_LINK_AGGREGATION = 7,
+};
diff --git a/src/libsystemd-network/sd-lldp.c b/src/libsystemd-network/sd-lldp.c
index a343370e96..7aa405a655 100644
--- a/src/libsystemd-network/sd-lldp.c
+++ b/src/libsystemd-network/sd-lldp.c
@@ -199,7 +199,7 @@ int lldp_handle_packet(tlv_packet *tlv, uint16_t length) {
goto out;
}
- /* skip type and lengh encoding */
+ /* skip type and length encoding */
p += 2;
q = p;
diff --git a/src/systemd/sd-lldp.h b/src/systemd/sd-lldp.h
index bf6dfc1ee0..308d42c6e9 100644
--- a/src/systemd/sd-lldp.h
+++ b/src/systemd/sd-lldp.h
@@ -59,6 +59,13 @@ int sd_lldp_packet_read_system_description(sd_lldp_packet *tlv, char **data, uin
int sd_lldp_packet_read_system_capability(sd_lldp_packet *tlv, uint16_t *data);
int sd_lldp_packet_read_port_description(sd_lldp_packet *tlv, char **data, uint16_t *length);
+/* IEEE 802.1 organizationally specific TLVs */
+int sd_lldp_packet_read_port_vlan_id(sd_lldp_packet *tlv, uint16_t *id);
+int sd_lldp_packet_read_port_protocol_vlan_id(sd_lldp_packet *tlv, uint8_t *flags, uint16_t *id);
+int sd_lldp_packet_read_vlan_name(sd_lldp_packet *tlv, uint16_t *vlan_id, char **name, uint16_t *length);
+int sd_lldp_packet_read_management_vid(sd_lldp_packet *tlv, uint16_t *id);
+int sd_lldp_packet_read_link_aggregation(sd_lldp_packet *tlv, uint8_t *status, uint32_t *id);
+
sd_lldp_packet *sd_lldp_packet_ref(sd_lldp_packet *tlv);
sd_lldp_packet *sd_lldp_packet_unref(sd_lldp_packet *tlv);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-03 12:26:24 +0000