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cb22015b2a
We make it a first-class citizen internally, even though we won't use it over the wire (at least, non-experimental builds). This scheme follows the latest draft, in which features are flagged compulsory. We also add several helper functions. Since uses the *even* bits (as per latest spec), not the *odd* bits, we have some other fixups. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/* This represents a channel type: i.e. the sticky feature bits. */
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#ifndef LIGHTNING_COMMON_CHANNEL_TYPE_H
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#define LIGHTNING_COMMON_CHANNEL_TYPE_H
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#include "config.h"
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#include <common/features.h>
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#include <wire/channel_type_wiregen.h>
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/* Explicit channel types */
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struct channel_type *channel_type_none(const tal_t *ctx);
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struct channel_type *channel_type_static_remotekey(const tal_t *ctx);
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struct channel_type *channel_type_anchor_outputs(const tal_t *ctx);
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/* Duplicate a channel_type */
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struct channel_type *channel_type_dup(const tal_t *ctx,
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const struct channel_type *t);
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/* Derive channel type from feature negotiation */
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struct channel_type *default_channel_type(const tal_t *ctx,
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const struct feature_set *our_features,
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const u8 *their_features);
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/* Does this type include this feature? */
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bool channel_type_has(const struct channel_type *type, int feature);
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/* Are these two channel_types equivalent? */
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bool channel_type_eq(const struct channel_type *a,
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const struct channel_type *b);
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/* Is channel_type_eq() for any type in this array? */
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bool channel_type_eq_any(const struct channel_type *t,
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struct channel_type **arr);
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/* Return channel_type if this is acceptable, otherwise NULL */
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struct channel_type *channel_type_accept(const tal_t *ctx,
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const u8 *t,
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const struct feature_set *our_features,
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const u8 *their_features);
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#endif /* LIGHTNING_COMMON_CHANNEL_TYPE_H */
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