1KNET_LINK_GET_STATUS(3) Kronosnet Programmer's Manual KNET_LINK_GET_STATUS(3)
2
6 knet_link_get_status - Get the status (and statistics) for a link.
7
10 #include <libknet.h>
11 int knet_link_get_status(
13 knet_handle_t knet_h,
14 knet_node_id_t host_id,
15 uint8_t link_id,
16 struct knet_link_status *status,
17 size_t struct_size
18 );
19
21 knet_link_get_status
22 knet_h - pointer to knet_handle_t
24 host_id - see knet_host_add(3)
26 link_id - see knet_link_set_config(3)
28 status - pointer to knet_link_status struct
30 struct_size - max size of knet_link_status - allows library to add
32 fields without ABI change. Returned structure will be truncated to this
33 length and .size member indicates the full size.
34
36 Status of a knet link as returned from knet_link_get_status()
37 struct knet_link_status {
39 /*
40 * Size of the structure for ABI checking, set this to
41 * sizeof(knet_link_status) before calling knet_link_get_status()
42 */
43 size_t size;
44 char src_ipaddr[KNET_MAX_HOST_LEN]; /* Local IP address as a string */
45 char src_port[KNET_MAX_PORT_LEN]; /* Local IP port as a string */
46 char dst_ipaddr[KNET_MAX_HOST_LEN]; /* Remote IP address as a string */
47 char dst_port[KNET_MAX_PORT_LEN]; /* Remote IP port as a string */
48 uint8_t enabled; /* Link is configured and admin enabled for traffic */
49 uint8_t connected; /* Link is connected for data (local view) */
50 uint8_t dynconnected; /* Link has been activated by remote dynip */
51 unsigned long long latency; /* average latency computed by fix/exp */
52 struct timespec pong_last; /* Timestamp of the past pong received */
53 unsigned int mtu; /* Currently detected MTU on this link */
54 /*
55 * Contains the size of the IP protocol, knet headers and crypto headers
56 * (if configured). This value is filled in ONLY after the first PMTUd run on
57 * that given link, and can change if link configuration or crypto configuration
58 * changes at runtime. WARNING: in general mtu + proto_overhead might or might not
59 * match the output of ifconfig mtu due to crypto requirements to pad packets to
60 * some specific boundaries.
61 */
62 unsigned int proto_overhead;
63 struct stats; /* Link statistics */
64 };
65
67 knet_link_get_status returns 0 on success -1 on error and errno is set.
68
70 knet_handle_remove_datafd(3), knet_handle_get_stats(3),
71 knet_host_add(3), knet_handle_pmtud_setfreq(3),
72 knet_handle_pmtud_get(3), knet_handle_crypto_use_config(3),
73 knet_host_get_id_by_host_name(3), knet_host_get_status(3),
74 knet_link_add_acl(3), knet_link_get_pong_count(3),
75 knet_link_get_priority(3), knet_handle_free(3),
76 knet_handle_enable_sock_notify(3), knet_handle_get_datafd(3),
77 knet_recv(3), knet_link_get_ping_timers(3),
78 knet_log_get_subsystem_id(3), knet_host_remove(3),
79 knet_host_enable_status_change_notify(3), knet_strtoaddr(3),
80 knet_link_rm_acl(3), knet_send(3), knet_handle_enable_pmtud_notify(3),
81 knet_handle_get_transport_reconnect_interval(3),
82 knet_link_get_enable(3), knet_link_set_priority(3),
83 knet_log_set_loglevel(3), knet_handle_get_channel(3),
84 knet_link_get_config(3), knet_link_get_link_list(3),
85 knet_get_transport_list(3), knet_get_transport_id_by_name(3),
86 knet_log_get_loglevel_id(3), knet_handle_new_ex(3),
87 knet_host_set_name(3), knet_addrtostr(3), knet_handle_setfwd(3),
88 knet_get_compress_list(3), knet_host_set_policy(3),
89 knet_get_transport_name_by_id(3), knet_handle_enable_filter(3),
90 knet_handle_crypto_rx_clear_traffic(3), knet_handle_compress(3),
91 knet_handle_add_datafd(3), knet_send_sync(3),
92 knet_log_get_loglevel_name(3), knet_handle_enable_access_lists(3),
93 knet_host_get_host_list(3), knet_host_get_policy(3),
94 knet_link_set_enable(3), knet_link_set_pong_count(3),
95 knet_log_get_subsystem_name(3), knet_host_get_name_by_host_id(3),
96 knet_link_clear_config(3), knet_log_get_loglevel(3),
97 knet_handle_new(3), knet_handle_pmtud_getfreq(3),
98 knet_handle_pmtud_set(3), knet_handle_clear_stats(3),
99 knet_link_set_config(3), knet_handle_crypto_set_config(3),
100 knet_handle_crypto(3), knet_get_crypto_list(3),
101 knet_handle_set_transport_reconnect_interval(3),
102 knet_link_clear_acl(3), knet_link_set_ping_timers(3),
103 knet_link_insert_acl(3)
104
106 Copyright (C) 2010-2021 Red Hat, Inc. All rights reserved.
107kronosnet 2021-11-15 KNET_LINK_GET_STATUS(3)