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-rw-r--r--src/libsystemd-network/lldp-tlv.c133
1 files changed, 44 insertions, 89 deletions
diff --git a/src/libsystemd-network/lldp-tlv.c b/src/libsystemd-network/lldp-tlv.c
index 996c5b8881..b967f34a99 100644
--- a/src/libsystemd-network/lldp-tlv.c
+++ b/src/libsystemd-network/lldp-tlv.c
@@ -339,6 +339,45 @@ int lldp_tlv_packet_exit_container(tlv_packet *m) {
return 0;
}
+static int lldp_tlv_packet_read_u16_tlv(tlv_packet *tlv, uint16_t type, uint16_t *value) {
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container(tlv, type);
+ if (r < 0)
+ goto out;
+
+ r = tlv_packet_read_u16(tlv, value);
+
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ out:
+ return r;
+}
+
+static int lldp_tlv_packet_read_string_tlv(tlv_packet *tlv, uint16_t type, char **data, uint16_t *length) {
+ char *s;
+ int r;
+
+ assert_return(tlv, -EINVAL);
+
+ r = lldp_tlv_packet_enter_container(tlv, type);
+ if (r < 0)
+ return r;
+
+ r = tlv_packet_read_string(tlv, &s, length);
+ if (r < 0)
+ goto out;
+
+ *data = (char *) s;
+
+ out:
+ (void) lldp_tlv_packet_exit_container(tlv);
+
+ return r;
+}
+
int sd_lldp_packet_read_chassis_id(tlv_packet *tlv,
uint8_t *type,
uint8_t **data,
@@ -431,113 +470,29 @@ int sd_lldp_packet_read_port_id(tlv_packet *tlv,
}
int sd_lldp_packet_read_ttl(tlv_packet *tlv, uint16_t *ttl) {
- int r;
-
- assert_return(tlv, -EINVAL);
-
- r = lldp_tlv_packet_enter_container(tlv, LLDP_TYPE_TTL);
- if (r < 0)
- goto out;
-
- r = tlv_packet_read_u16(tlv, ttl);
-
- (void) lldp_tlv_packet_exit_container(tlv);
-
- out:
- return r;
+ return lldp_tlv_packet_read_u16_tlv(tlv, LLDP_TYPE_TTL, ttl);
}
int sd_lldp_packet_read_system_name(tlv_packet *tlv,
char **data,
uint16_t *length) {
- char *s;
- int r;
-
- assert_return(tlv, -EINVAL);
-
- r = lldp_tlv_packet_enter_container(tlv, LLDP_TYPE_SYSTEM_NAME);
- if (r < 0)
- return r;
-
- r = tlv_packet_read_string(tlv, &s, length);
- if (r < 0)
- goto out;
-
- *data = (char *) s;
-
- out:
- (void) lldp_tlv_packet_exit_container(tlv);
-
- return r;
+ return lldp_tlv_packet_read_string_tlv(tlv, LLDP_TYPE_SYSTEM_NAME, data, length);
}
int sd_lldp_packet_read_system_description(tlv_packet *tlv,
char **data,
uint16_t *length) {
- char *s;
- int r;
-
- assert_return(tlv, -EINVAL);
-
- r = lldp_tlv_packet_enter_container(tlv, LLDP_TYPE_SYSTEM_DESCRIPTION);
- if (r < 0)
- return r;
-
- r = tlv_packet_read_string(tlv, &s, length);
- if (r < 0)
- goto out;
-
- *data = (char *) s;
-
- out:
- (void) lldp_tlv_packet_exit_container(tlv);
-
- return r;
+ return lldp_tlv_packet_read_string_tlv(tlv, LLDP_TYPE_SYSTEM_DESCRIPTION, data, length);
}
int sd_lldp_packet_read_port_description(tlv_packet *tlv,
char **data,
uint16_t *length) {
- char *s;
- int r;
-
- assert_return(tlv, -EINVAL);
-
- r = lldp_tlv_packet_enter_container(tlv, LLDP_TYPE_PORT_DESCRIPTION);
- if (r < 0)
- return r;
-
- r = tlv_packet_read_string(tlv, &s, length);
- if (r < 0)
- goto out;
-
- *data = (char *) s;
-
- out:
- (void) lldp_tlv_packet_exit_container(tlv);
-
- return r;
+ return lldp_tlv_packet_read_string_tlv(tlv, LLDP_TYPE_PORT_DESCRIPTION, data, length);
}
int sd_lldp_packet_read_system_capability(tlv_packet *tlv, uint16_t *data) {
- int r;
-
- assert_return(tlv, -EINVAL);
-
- r = lldp_tlv_packet_enter_container(tlv, LLDP_TYPE_SYSTEM_CAPABILITIES);
- if (r < 0)
- return r;
-
- r = tlv_packet_read_u16(tlv, data);
- if (r < 0)
- goto out;
-
- return 0;
- out:
-
- (void) lldp_tlv_packet_exit_container(tlv);
-
- return r;
+ return lldp_tlv_packet_read_u16_tlv(tlv, LLDP_TYPE_SYSTEM_CAPABILITIES, data);
}
int sd_lldp_packet_get_destination_type(tlv_packet *tlv, int *dest) {