core-lightning/lightningd/htlc_end.h
Rusty Russell 826fb0c2dc lightningd: track HTLC ends.
This lets us link HTLCs from one peer to another; but for the moment it
simply means we can adjust balance when an HTLC is fulfilled.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 23:59:46 +10:30

48 lines
1.3 KiB
C

#ifndef LIGHTNING_LIGHTNINGD_HTLC_END_H
#define LIGHTNING_LIGHTNINGD_HTLC_END_H
#include "config.h"
#include <ccan/htable/htable_type.h>
#include <ccan/short_types/short_types.h>
/* A HTLC has a source and destination: if other is NULL, it's this node.
*
* The main daemon simply shuffles them back and forth.
*/
enum htlc_end_type { HTLC_SRC, HTLC_DST };
struct htlc_end {
enum htlc_end_type which_end;
struct peer *peer;
u64 htlc_id;
u64 msatoshis;
struct htlc_end *other_end;
/* If this is driven by a command. */
struct pay_command *pay_command;
};
static inline const struct htlc_end *keyof_htlc_end(const struct htlc_end *e)
{
return e;
}
size_t hash_htlc_end(const struct htlc_end *e);
static inline bool htlc_end_eq(const struct htlc_end *a,
const struct htlc_end *b)
{
return a->peer == b->peer
&& a->htlc_id == b->htlc_id
&& a->which_end == b->which_end;
}
HTABLE_DEFINE_TYPE(struct htlc_end, keyof_htlc_end, hash_htlc_end, htlc_end_eq,
htlc_end_map);
struct htlc_end *find_htlc_end(const struct htlc_end_map *map,
const struct peer *peer,
u64 htlc_id,
enum htlc_end_type which_end);
void connect_htlc_end(struct htlc_end_map *map, struct htlc_end *hend);
#endif /* LIGHTNING_LIGHTNINGD_HTLC_END_H */