return buffer;
}
+
+bool ether_addr_is_null(const struct ether_addr *addr) {
+ assert(addr);
+
+ return addr->ether_addr_octet[0] == 0 &&
+ addr->ether_addr_octet[1] == 0 &&
+ addr->ether_addr_octet[2] == 0 &&
+ addr->ether_addr_octet[3] == 0 &&
+ addr->ether_addr_octet[4] == 0 &&
+ addr->ether_addr_octet[5] == 0;
+}
+
+bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b) {
+ assert(a);
+ assert(b);
+
+ return a->ether_addr_octet[0] == b->ether_addr_octet[0] &&
+ a->ether_addr_octet[1] == b->ether_addr_octet[1] &&
+ a->ether_addr_octet[2] == b->ether_addr_octet[2] &&
+ a->ether_addr_octet[3] == b->ether_addr_octet[3] &&
+ a->ether_addr_octet[4] == b->ether_addr_octet[4] &&
+ a->ether_addr_octet[5] == b->ether_addr_octet[5];
+}
***/
#include <net/ethernet.h>
+#include <stdbool.h>
#define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X"
#define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5]
#define ETHER_ADDR_TO_STRING_MAX (3*6)
-
char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]);
+
+bool ether_addr_is_null(const struct ether_addr *addr);
+bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b);
void *userdata;
uint16_t capability_mask;
+
+ struct ether_addr filter_address;
};
#define log_lldp_errno(error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "LLDP: " fmt, ##__VA_ARGS__)
#include "lldp-neighbor.h"
#include "lldp-network.h"
#include "socket-util.h"
+#include "ether-addr-util.h"
#define LLDP_DEFAULT_NEIGHBORS_MAX 128U
if (n->ttl <= 0)
return changed;
+ /* Filter out the filter address */
+ if (!ether_addr_is_null(&lldp->filter_address) &&
+ ether_addr_equal(&lldp->filter_address, &n->source_address))
+ return changed;
+
/* Only add if the neighbor has a capability we are interested in. Note that we also store all neighbors with
* no caps field set. */
if (n->has_capabilities &&
return 0;
}
+
+_public_ int sd_lldp_set_filter_address(sd_lldp *lldp, const struct ether_addr *addr) {
+ assert_return(lldp, -EINVAL);
+
+ /* In order to deal nicely with bridges that send back our own packets, allow one address to be filtered, so
+ * that our own can be filtered out here. */
+
+ if (!addr) {
+ zero(lldp->filter_address);
+ return 0;
+ }
+
+ lldp->filter_address = *addr;
+ return 0;
+}
if (r < 0)
return r;
+ r = sd_lldp_set_filter_address(link->lldp, &link->mac);
+ if (r < 0)
+ return r;
+
r = sd_lldp_attach_event(link->lldp, NULL, 0);
if (r < 0)
return r;
/* Controls how much and what to store in the neighbors database */
int sd_lldp_set_neighbors_max(sd_lldp *lldp, uint64_t n);
int sd_lldp_match_capabilities(sd_lldp *lldp, uint16_t mask);
+int sd_lldp_set_filter_address(sd_lldp *lldp, const struct ether_addr *address);
int sd_lldp_get_neighbors(sd_lldp *lldp, sd_lldp_neighbor ***neighbors);