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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:25:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:25:50 +0000
commit19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch)
treed59b9989ce55ed23693e80974d94c856f1c2c8b1 /src/libsystemd-network/lldp-neighbor.h
parentInitial commit. (diff)
downloadsystemd-upstream.tar.xz
systemd-upstream.zip
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libsystemd-network/lldp-neighbor.h')
-rw-r--r--src/libsystemd-network/lldp-neighbor.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/src/libsystemd-network/lldp-neighbor.h b/src/libsystemd-network/lldp-neighbor.h
new file mode 100644
index 0000000..62dbff4
--- /dev/null
+++ b/src/libsystemd-network/lldp-neighbor.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <sys/types.h>
+
+#include "sd-lldp.h"
+
+#include "hash-funcs.h"
+#include "lldp-internal.h"
+#include "time-util.h"
+
+typedef struct LLDPNeighborID {
+ /* The spec calls this an "MSAP identifier" */
+ void *chassis_id;
+ size_t chassis_id_size;
+
+ void *port_id;
+ size_t port_id_size;
+} LLDPNeighborID;
+
+struct sd_lldp_neighbor {
+ /* Neighbor objects stay around as long as they are linked into an "sd_lldp" object or n_ref > 0. */
+ sd_lldp *lldp;
+ unsigned n_ref;
+
+ triple_timestamp timestamp;
+
+ usec_t until;
+ unsigned prioq_idx;
+
+ struct ether_addr source_address;
+ struct ether_addr destination_address;
+
+ LLDPNeighborID id;
+
+ /* The raw packet size. The data is appended to the object, accessible via LLDP_NEIGHBOR_RAW() */
+ size_t raw_size;
+
+ /* The current read index for the iterative TLV interface */
+ size_t rindex;
+
+ /* And a couple of fields parsed out. */
+ bool has_ttl:1;
+ bool has_capabilities:1;
+ bool has_port_vlan_id:1;
+
+ uint16_t ttl;
+
+ uint16_t system_capabilities;
+ uint16_t enabled_capabilities;
+
+ char *port_description;
+ char *system_name;
+ char *system_description;
+
+ uint16_t port_vlan_id;
+
+ char *chassis_id_as_string;
+ char *port_id_as_string;
+};
+
+static inline void *LLDP_NEIGHBOR_RAW(const sd_lldp_neighbor *n) {
+ return (uint8_t*) n + ALIGN(sizeof(sd_lldp_neighbor));
+}
+
+static inline uint8_t LLDP_NEIGHBOR_TLV_TYPE(const sd_lldp_neighbor *n) {
+ return ((uint8_t*) LLDP_NEIGHBOR_RAW(n))[n->rindex] >> 1;
+}
+
+static inline size_t LLDP_NEIGHBOR_TLV_LENGTH(const sd_lldp_neighbor *n) {
+ uint8_t *p;
+
+ p = (uint8_t*) LLDP_NEIGHBOR_RAW(n) + n->rindex;
+ return p[1] + (((size_t) (p[0] & 1)) << 8);
+}
+
+static inline void* LLDP_NEIGHBOR_TLV_DATA(const sd_lldp_neighbor *n) {
+ return ((uint8_t*) LLDP_NEIGHBOR_RAW(n)) + n->rindex + 2;
+}
+
+extern const struct hash_ops lldp_neighbor_hash_ops;
+int lldp_neighbor_id_compare_func(const LLDPNeighborID *x, const LLDPNeighborID *y);
+int lldp_neighbor_prioq_compare_func(const void *a, const void *b);
+
+sd_lldp_neighbor *lldp_neighbor_unlink(sd_lldp_neighbor *n);
+sd_lldp_neighbor *lldp_neighbor_new(size_t raw_size);
+int lldp_neighbor_parse(sd_lldp_neighbor *n);
+void lldp_neighbor_start_ttl(sd_lldp_neighbor *n);
+bool lldp_neighbor_equal(const sd_lldp_neighbor *a, const sd_lldp_neighbor *b);