mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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2f4b3392d5
When doing announcements, use the the timeout specified by RFC 5227. Note that timeout_multiplier might be 0. This aligns behavior to upstream version of n-acd.
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
#pragma once
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/*
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* IPv4 Address Conflict Detection
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*
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* This is the public header of the n-acd library, implementing IPv4 Address
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* Conflict Detection as described in RFC-5227. This header defines the public
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* API and all entry points of n-acd.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <netinet/in.h>
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#include <stdbool.h>
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#define N_ACD_TIMEOUT_RFC5227 (UINT64_C(9000))
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enum {
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_N_ACD_E_SUCCESS,
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N_ACD_E_DONE,
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N_ACD_E_STOPPED,
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N_ACD_E_PREEMPTED,
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N_ACD_E_INVALID_ARGUMENT,
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N_ACD_E_BUSY,
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};
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typedef struct NAcd NAcd;
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typedef struct NAcdConfig {
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int ifindex;
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unsigned int transport;
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const uint8_t *mac;
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size_t n_mac;
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struct in_addr ip;
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uint64_t timeout_msec;
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} NAcdConfig;
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typedef struct NAcdEvent {
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unsigned int event;
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union {
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struct {
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} ready, down;
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struct {
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uint16_t operation;
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uint8_t *sender;
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size_t n_sender;
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struct in_addr target;
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} used, defended, conflict;
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};
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} NAcdEvent;
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enum {
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N_ACD_TRANSPORT_ETHERNET,
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_N_ACD_TRANSPORT_N,
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};
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enum {
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N_ACD_EVENT_READY,
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N_ACD_EVENT_USED,
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N_ACD_EVENT_DEFENDED,
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N_ACD_EVENT_CONFLICT,
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N_ACD_EVENT_DOWN,
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_N_ACD_EVENT_N,
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};
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enum {
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N_ACD_DEFEND_NEVER,
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N_ACD_DEFEND_ONCE,
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N_ACD_DEFEND_ALWAYS,
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_N_ACD_DEFEND_N,
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};
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int n_acd_new(NAcd **acdp);
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void n_acd_free(NAcd *acd);
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void n_acd_get_fd(NAcd *acd, int *fdp);
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int n_acd_dispatch(NAcd *acd);
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int n_acd_pop_event(NAcd *acd, NAcdEvent **eventp);
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int n_acd_announce(NAcd *acd, unsigned int defend);
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int n_acd_start(NAcd *acd, NAcdConfig *config);
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int n_acd_stop(NAcd *acd);
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static inline void n_acd_freep(NAcd **acd) {
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if (*acd)
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n_acd_free(*acd);
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}
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#ifdef __cplusplus
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}
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#endif
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