.\"  Automatically generated man page, do not edit
.TH knet_host_enable_status_change_notify 3 2020-04-23 "kronosnet" "Kronosnet Programmer's Manual"
.SH NAME
knet_host_enable_status_change_notify \- Install a callback to get host status change events.
.SH SYNOPSIS
.nf
.B #include <libknet.h>
.sp
\fBint knet_host_enable_status_change_notify\fP(
    \fBknet_handle_t  \fP\fIknet_h\fP,
    \fBvoid          *\fP\fIhost_status_change_notify_fn_private_data\fP,
    \fBvoid(*)(void *private_data, knet_node_id_t host_id, uint8_t reachable, uint8_t remote, uint8_t external)  \fP\fIhost_status_change_notify_fn\fP
);
.fi
.SH DESCRIPTION
.PP
knet_host_enable_status_change_notify
.PP
knet_h - pointer to knet_handle_t
.PP
host_status_change_notify_fn_private_data - void pointer to data that can be used to identify the callback
.PP
host_status_change_notify_fn - is a callback function that is invoked every time there is a change in the host status. host status is identified by:
.PP
reachable, this host can send/receive data to/from host_id
.PP
remote, 0 if the host_id is connected locally or 1 if the there is one or more knet host(s) in between. NOTE: re-switching is NOT currently implemented, but this is ready for future and can avoid an API/ABI breakage later on.
.PP
external, 0 if the host_id is configured locally or 1 if it has been added from remote nodes config. NOTE: dynamic topology is NOT currently implemented, but this is ready for future and can avoid an API/ABI breakage later on. This function MUST NEVER block or add substantial delays.
.SH RETURN VALUE
.PP
knet_host_status_change_notify returns 0 on success -1 on error and errno is set. 
.SH SEE ALSO
.PP
.nh
.ad l
\fIknet_handle_remove_datafd(3), \fIknet_handle_get_stats(3), \fIknet_host_add(3), \fIknet_handle_pmtud_setfreq(3), \fIknet_handle_pmtud_get(3), \fIknet_host_get_id_by_host_name(3), \fIknet_host_get_status(3), \fIknet_link_add_acl(3), \fIknet_link_get_pong_count(3), \fIknet_link_get_priority(3), \fIknet_handle_free(3), \fIknet_handle_enable_sock_notify(3), \fIknet_handle_get_datafd(3), \fIknet_recv(3), \fIknet_link_get_ping_timers(3), \fIknet_log_get_subsystem_id(3), \fIknet_host_remove(3), \fIknet_strtoaddr(3), \fIknet_link_rm_acl(3), \fIknet_send(3), \fIknet_handle_enable_pmtud_notify(3), \fIknet_handle_get_transport_reconnect_interval(3), \fIknet_link_get_enable(3), \fIknet_link_set_priority(3), \fIknet_log_set_loglevel(3), \fIknet_handle_get_channel(3), \fIknet_link_get_config(3), \fIknet_link_get_link_list(3), \fIknet_get_transport_list(3), \fIknet_get_transport_id_by_name(3), \fIknet_log_get_loglevel_id(3), \fIknet_handle_new_ex(3), \fIknet_host_set_name(3), \fIknet_addrtostr(3), \fIknet_handle_setfwd(3), \fIknet_get_compress_list(3), \fIknet_host_set_policy(3), \fIknet_get_transport_name_by_id(3), \fIknet_handle_enable_filter(3), \fIknet_handle_compress(3), \fIknet_link_get_status(3), \fIknet_handle_add_datafd(3), \fIknet_send_sync(3), \fIknet_log_get_loglevel_name(3), \fIknet_handle_enable_access_lists(3), \fIknet_host_get_host_list(3), \fIknet_host_get_policy(3), \fIknet_link_set_enable(3), \fIknet_link_set_pong_count(3), \fIknet_log_get_subsystem_name(3), \fIknet_host_get_name_by_host_id(3), \fIknet_link_clear_config(3), \fIknet_log_get_loglevel(3), \fIknet_handle_new(3), \fIknet_handle_pmtud_getfreq(3), \fIknet_handle_pmtud_set(3), \fIknet_handle_clear_stats(3), \fIknet_link_set_config(3), \fIknet_handle_crypto(3), \fIknet_get_crypto_list(3), \fIknet_handle_set_transport_reconnect_interval(3), \fIknet_link_clear_acl(3), \fIknet_link_set_ping_timers(3), \fIknet_link_insert_acl(3)
.ad
.hy
.SH "COPYRIGHT"
.PP
Copyright (C) 2010-2020 Red Hat, Inc. All rights reserved.