Provided by: libknet-doc_1.25-1_all 
NAME
knet_handle_new_ex - create a new instance of a knet handle
SYNOPSIS
#include <libknet.h>
knet_handle_t knet_handle_new_ex(
knet_node_id_t host_id,
int log_fd,
uint8_t default_log_level,
uint64_t flags
);
DESCRIPTION
knet_handle_new_ex
host_id - Each host in a knet is identified with a unique ID. when creating a new handle
local host_id must be specified (0 to UINT16_MAX are all valid). It is the user's
responsibility to check that the value is unique, or bad things might happen.
log_fd - Write file descriptor. If set to a value > 0, it will be used to write log
packets from libknet to the application. Setting to 0 will disable logging from libknet.
It is possible to enable logging at any given time (see logging API). Make sure to either
read from this filedescriptor properly and/or mark it O_NONBLOCK, otherwise if the fd
becomes full, libknet could block. It is strongly encouraged to use pipes (ex: pipe(2) or
pipe2(2)) for logging fds due to the atomic nature of writes between fds. See also libknet
test suite for reference and guidance. The caller is responsible for management of the FD.
eg. knet will not close it when knet_handle_free(3) is called
default_log_level - If logfd is specified, it will initialize all subsystems to log at
default_log_level value. (see logging API)
flags - bitwise OR of some of the following flags: KNET_HANDLE_FLAG_PRIVILEGED: use
privileged operations setting up the communication sockets. If disabled, failure to
acquire large enough socket buffers is ignored but logged. Inadequate buffers lead to poor
performance.
RETURN VALUE
on success, a new knet_handle_t is returned. on failure, NULL is returned and errno is
set. knet-specific errno values: ENAMETOOLONG - socket buffers couldn't be set big enough
and KNET_HANDLE_FLAG_PRIVILEGED was specified ERANGE - buffer size readback returned
unexpected type
SEE ALSO
knet_handle_remove_datafd(3), knet_handle_get_stats(3), knet_host_add(3),
knet_handle_pmtud_setfreq(3), knet_handle_pmtud_get(3), knet_handle_crypto_use_config(3),
knet_host_get_id_by_host_name(3), knet_host_get_status(3), knet_link_add_acl(3),
knet_link_get_pong_count(3), knet_link_get_priority(3), knet_handle_free(3),
knet_handle_enable_sock_notify(3), knet_handle_get_datafd(3), knet_recv(3),
knet_link_get_ping_timers(3), knet_log_get_subsystem_id(3), knet_host_remove(3),
knet_host_enable_status_change_notify(3), knet_strtoaddr(3), knet_link_rm_acl(3),
knet_send(3), knet_handle_enable_pmtud_notify(3),
knet_handle_get_transport_reconnect_interval(3), knet_link_get_enable(3),
knet_link_set_priority(3), knet_log_set_loglevel(3), knet_handle_get_channel(3),
knet_link_get_config(3), knet_link_get_link_list(3), knet_get_transport_list(3),
knet_get_transport_id_by_name(3), knet_log_get_loglevel_id(3), knet_host_set_name(3),
knet_addrtostr(3), knet_handle_setfwd(3), knet_get_compress_list(3),
knet_host_set_policy(3), knet_get_transport_name_by_id(3), knet_handle_enable_filter(3),
knet_handle_crypto_rx_clear_traffic(3), knet_handle_compress(3), knet_link_get_status(3),
knet_handle_add_datafd(3), knet_send_sync(3), knet_log_get_loglevel_name(3),
knet_handle_enable_access_lists(3), knet_host_get_host_list(3), knet_host_get_policy(3),
knet_link_set_enable(3), knet_link_set_pong_count(3), knet_log_get_subsystem_name(3),
knet_host_get_name_by_host_id(3), knet_link_clear_config(3), knet_log_get_loglevel(3),
knet_handle_new(3), knet_handle_pmtud_getfreq(3), knet_handle_pmtud_set(3),
knet_handle_clear_stats(3), knet_link_set_config(3), knet_handle_crypto_set_config(3),
knet_handle_crypto(3), knet_get_crypto_list(3),
knet_handle_set_transport_reconnect_interval(3), knet_link_clear_acl(3),
knet_link_set_ping_timers(3), knet_link_insert_acl(3)
COPYRIGHT
Copyright (C) 2010-2023 Red Hat, Inc. All rights reserved.