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