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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
Copyright © 2017 Intel Corporation. All rights reserved.
***/
#include "sd-radv.h"
#include "log.h"
#include "list.h"
#include "sparse-endian.h"
assert_cc(SD_RADV_DEFAULT_MIN_TIMEOUT_USEC <= SD_RADV_DEFAULT_MAX_TIMEOUT_USEC);
#define SD_RADV_MAX_INITIAL_RTR_ADVERT_INTERVAL_USEC (16*USEC_PER_SEC)
#define SD_RADV_MAX_INITIAL_RTR_ADVERTISEMENTS 3
#define SD_RADV_MAX_FINAL_RTR_ADVERTISEMENTS 3
#define SD_RADV_MIN_DELAY_BETWEEN_RAS 3
#define SD_RADV_MAX_RA_DELAY_TIME_USEC (500*USEC_PER_MSEC)
#define SD_RADV_OPT_ROUTE_INFORMATION 24
#define SD_RADV_OPT_RDNSS 25
#define SD_RADV_OPT_DNSSL 31
enum RAdvState {
SD_RADV_STATE_IDLE = 0,
SD_RADV_STATE_ADVERTISING = 1,
};
typedef enum RAdvState RAdvState;
struct sd_radv_opt_dns {
uint8_t type;
uint8_t length;
uint16_t reserved;
be32_t lifetime;
} _packed_;
struct sd_radv {
unsigned n_ref;
RAdvState state;
int ifindex;
sd_event *event;
int event_priority;
struct ether_addr mac_addr;
uint8_t hop_limit;
uint8_t flags;
uint32_t mtu;
uint16_t lifetime;
int fd;
unsigned ra_sent;
sd_event_source *recv_event_source;
sd_event_source *timeout_event_source;
unsigned n_prefixes;
LIST_HEAD(sd_radv_prefix, prefixes);
unsigned n_route_prefixes;
LIST_HEAD(sd_radv_route_prefix, route_prefixes);
size_t n_rdnss;
struct sd_radv_opt_dns *rdnss;
struct sd_radv_opt_dns *dnssl;
};
#define radv_prefix_opt__contents { \
uint8_t type; \
uint8_t length; \
uint8_t prefixlen; \
uint8_t flags; \
be32_t valid_lifetime; \
be32_t preferred_lifetime; \
uint32_t reserved; \
struct in6_addr in6_addr; \
}
struct radv_prefix_opt radv_prefix_opt__contents;
/* We need the opt substructure to be packed, because we use it in send(). But
* if we use _packed_, this means that the structure cannot be used directly in
* normal code in general, because the fields might not be properly aligned.
* But in this particular case, the structure is defined in a way that gives
* proper alignment, even without the explicit _packed_ attribute. To appease
* the compiler we use the "unpacked" structure, but we also verify that
* structure contains no holes, so offsets are the same when _packed_ is used.
*/
struct radv_prefix_opt__packed radv_prefix_opt__contents _packed_;
assert_cc(sizeof(struct radv_prefix_opt) == sizeof(struct radv_prefix_opt__packed));
struct sd_radv_prefix {
unsigned n_ref;
struct radv_prefix_opt opt;
LIST_FIELDS(struct sd_radv_prefix, prefix);
usec_t valid_until;
usec_t preferred_until;
};
#define radv_route_prefix_opt__contents { \
uint8_t type; \
uint8_t length; \
uint8_t prefixlen; \
uint8_t flags_reserved; \
be32_t lifetime; \
struct in6_addr in6_addr; \
}
struct radv_route_prefix_opt radv_route_prefix_opt__contents;
struct radv_route_prefix_opt__packed radv_route_prefix_opt__contents _packed_;
assert_cc(sizeof(struct radv_route_prefix_opt) == sizeof(struct radv_route_prefix_opt__packed));
struct sd_radv_route_prefix {
unsigned n_ref;
struct radv_route_prefix_opt opt;
LIST_FIELDS(struct sd_radv_route_prefix, prefix);
};
#define log_radv_full(level, error, fmt, ...) log_internal(level, error, PROJECT_FILE, __LINE__, __func__, "RADV: " fmt, ##__VA_ARGS__)
#define log_radv_errno(error, fmt, ...) log_radv_full(LOG_DEBUG, error, fmt, ##__VA_ARGS__)
#define log_radv(fmt, ...) log_radv_errno(0, fmt, ##__VA_ARGS__)
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