1KNET_HANDLE_ENABLE_FILTER(K3r)onosnet Programmer's ManKuNaElT_HANDLE_ENABLE_FILTER(3)
2
6 knet_handle_enable_filter - install a filter to route packets
7
10 #include <libknet.h>
11 int knet_handle_enable_filter(
13 knet_handle_t knet_h,
14 void *dst_host_filter_fn_private_data,
15 int(*)(void *private_data, const unsigned char *outdata, ssize_t outdata_len, uint8_t tx_rx, knet_node_id_t this_host_id, knet_node_id_t src_host_id, int8_t *channel, knet_node_id_t *dst_host_ids, size_t *dst_host_ids_entries) dst_host_filter_fn
16 );
17
19 knet_handle_enable_filter
20 knet_h - pointer to knet_handle_t
22 dst_host_filter_fn_private_data void pointer to data that can be used
24 to identify the callback.
25 dst_host_filter_fn - is a callback function that is invoked every time
27 a packet hits datafd (see knet_handle_new(3)). the function allows
28 users to tell libknet where the packet has to be delivered.
29 const unsigned char *outdata - is a pointer to the current packet
31 ssize_t outdata_len - length of the above data uint8_t tx_rx - filter
32 is called on tx or rx (KNET_NOTIFY_TX, KNET_NOTIFY_RX) knet_node_id_t
33 this_host_id - host_id processing the packet knet_node_id_t src_host_id
34 - host_id that generated the packet knet_node_id_t *dst_host_ids - ar‐
35 ray of KNET_MAX_HOST knet_node_id_t where to store the destinations
36 (uninitialized by caller, callee should never read it) size_t
37 *dst_host_ids_entries - number of hosts to send the message
38 dst_host_filter_fn should return -1 on error, packet is discarded. 0
40 packet is unicast and should be sent to dst_host_ids and there are
41 dst_host_ids_entries in the buffer. 1 packet is broadcast/multicast and
42 is sent all hosts. contents of dst_host_ids and dst_host_ids_entries
43 are ignored.
44
46 knet_handle_enable_filter returns 0 on success -1 on error and errno is
47 set.
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50 knet_handle_remove_datafd(3), knet_handle_get_stats(3),
51 knet_host_add(3), knet_handle_pmtud_setfreq(3),
52 knet_handle_pmtud_get(3), knet_handle_crypto_use_config(3),
53 knet_host_get_id_by_host_name(3), knet_host_get_status(3),
54 knet_link_add_acl(3), knet_link_get_pong_count(3),
55 knet_link_get_priority(3), knet_handle_free(3),
56 knet_handle_enable_sock_notify(3), knet_handle_get_datafd(3),
57 knet_recv(3), knet_link_get_ping_timers(3),
58 knet_log_get_subsystem_id(3), knet_host_remove(3),
59 knet_host_enable_status_change_notify(3), knet_strtoaddr(3),
60 knet_link_rm_acl(3), knet_send(3), knet_handle_enable_pmtud_notify(3),
61 knet_handle_get_transport_reconnect_interval(3),
62 knet_link_get_enable(3), knet_link_set_priority(3),
63 knet_log_set_loglevel(3), knet_handle_get_channel(3),
64 knet_link_get_config(3), knet_link_get_link_list(3),
65 knet_get_transport_list(3), knet_get_transport_id_by_name(3),
66 knet_log_get_loglevel_id(3), knet_handle_new_ex(3),
67 knet_host_set_name(3), knet_addrtostr(3), knet_handle_setfwd(3),
68 knet_get_compress_list(3), knet_host_set_policy(3),
69 knet_get_transport_name_by_id(3),
70 knet_handle_crypto_rx_clear_traffic(3), knet_handle_compress(3),
71 knet_link_get_status(3), knet_handle_add_datafd(3), knet_send_sync(3),
72 knet_log_get_loglevel_name(3), knet_handle_enable_access_lists(3),
73 knet_host_get_host_list(3), knet_host_get_policy(3),
74 knet_link_set_enable(3), knet_link_set_pong_count(3),
75 knet_log_get_subsystem_name(3), knet_host_get_name_by_host_id(3),
76 knet_link_clear_config(3), knet_log_get_loglevel(3),
77 knet_handle_new(3), knet_handle_pmtud_getfreq(3),
78 knet_handle_pmtud_set(3), knet_handle_clear_stats(3),
79 knet_link_set_config(3), knet_handle_crypto_set_config(3),
80 knet_handle_crypto(3), knet_get_crypto_list(3),
81 knet_handle_set_transport_reconnect_interval(3),
82 knet_link_clear_acl(3), knet_link_set_ping_timers(3),
83 knet_link_insert_acl(3)
84
86 Copyright (C) 2010-2023 Red Hat, Inc. All rights reserved.
87kronosnet 2023-09-27 KNET_HANDLE_ENABLE_FILTER(3)