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2ffd344299
For quiescence, we can't have sent any updates at all. But for upgrades on reconnection, we may have already added uncommitted HTLCs for retransmission, but they don't count towards "are we quiesced" since they're not sent yet. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
#ifndef LIGHTNING_COMMON_FEE_STATES_H
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#define LIGHTNING_COMMON_FEE_STATES_H
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#include "config.h"
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#include <ccan/tal/tal.h>
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#include <common/htlc.h>
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struct fee_states {
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/* Current feerate in satoshis per 1000 weight: goes through same
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* state machine as htlc addition, but can only have one rate at a
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* time in any state and are never removed.
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*
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* We need to know if there's an actual change pending though (even if
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* it's a "change" to an idential feerate!) so we use pointers.
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*/
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u32 *feerate[HTLC_STATE_INVALID];
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};
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/**
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* new_fee_states: Initialize a fee_states structure as at open-of-channel.
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* @ctx: the tal ctx to allocate off
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* @opener: which side opened the channel (and thus, proposes fee updates).
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* @feerate_per_kw: the initial feerate (if any).
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*/
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struct fee_states *new_fee_states(const tal_t *ctx,
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enum side opener,
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const u32 *feerate_per_kw);
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/**
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* dup_fee_states: copy a fee_states structure.
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* @ctx: the tal ctx to allocate off
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* @fee_states: the fee_states to copy.
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*/
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struct fee_states *dup_fee_states(const tal_t *ctx,
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const struct fee_states *fee_states TAKES);
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/**
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* get_feerate: Get the current feerate
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* @fee_states: the fee state machine
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* @opener: which side opened the channel (and thus, proposes fee updates).
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* @side: which side to get the feerate for
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*/
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u32 get_feerate(const struct fee_states *fee_states,
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enum side opener,
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enum side side);
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/**
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* first_fee_state: get the initial fee state.
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* @opener: which side opened the channel (and thus, proposes fee updates).
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*/
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enum htlc_state first_fee_state(enum side opener);
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/**
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* last_fee_state: get the final fee state.
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* @opener: which side opened the channel (and thus, proposes fee updates).
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*/
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enum htlc_state last_fee_state(enum side opener);
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/**
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* start_fee_update: feed a new fee update into state machine.
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* @fee_states: the fee state machine
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* @opener: which side opened the channel (and thus, proposes fee updates).
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* @feerate_per_kw: the new feerate.
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*/
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void start_fee_update(struct fee_states *fee_states,
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enum side opener,
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u32 feerate_per_kw);
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/**
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* inc_fee_state: move this feerate to the next state.
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* @fee_states: the fee state machine
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* @hstate: state
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*
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* Moves fee_states[hstate] to fee_states[hstate+1], if not NULL.
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* Returns true if it wasn't NULL.
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*/
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bool inc_fee_state(struct fee_states *fee_states, enum htlc_state hstate);
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/* Marshal and unmarshal */
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void towire_fee_states(u8 **pptr, const struct fee_states *fee_states);
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/* FIXME: You must check that fee_states_valid! */
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struct fee_states *fromwire_fee_states(const tal_t *ctx,
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const u8 **cursor, size_t *max);
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/**
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* Is this fee_state struct valid for this side?
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*/
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bool fee_states_valid(const struct fee_states *fee_states, enum side opener);
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/* Are there no more fee changes in-flight? */
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bool feerate_changes_done(const struct fee_states *fee_states,
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bool ignore_uncommitted);
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#endif /* LIGHTNING_COMMON_FEE_STATES_H */
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