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core-lightning/common/features.h

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features: Move feature-handling code to a common/features.c source.
2018-01-12 14:35:52 +01:00
#ifndef LIGHTNING_COMMON_FEATURES_H
#define LIGHTNING_COMMON_FEATURES_H
#include "config.h"
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
features: more general accessor functions. As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-03-13 16:41:55 +01:00
/* Returns true if we're OK with all these offered features. */
More renaming of gfeatures to globalfeatures. Use the BOLT #1 naming. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-09-29 02:57:01 +02:00
bool features_supported(const u8 *globalfeatures, const u8 *localfeatures);
features: Move feature-handling code to a common/features.c source.
2018-01-12 14:35:52 +01:00
Use localfeatures and globalfeatures consistently. That's what BOLT #1 calls them; make it easier for people to grep. Reported-by: @niftynei Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-09-28 05:24:24 +02:00
/* For sending our features: tal_count() returns length. */
u8 *get_offered_globalfeatures(const tal_t *ctx);
u8 *get_offered_localfeatures(const tal_t *ctx);
features: more general accessor functions. As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-03-13 16:41:55 +01:00
/* Is this feature bit requested? (Either compulsory or optional) */
bool feature_offered(const u8 *features, size_t f);
features: add local_feature_negotiated / global_feature_negotiated helpers. We currently generally assume the features we offer are fixed; this makes the code clearer and handles where we offer features iff EXPERIMENTAL_FEATURES=1 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-12-03 00:05:06 +01:00
/* Was this feature bit offered by them and us? */
bool local_feature_negotiated(const u8 *lfeatures, size_t f);
bool global_feature_negotiated(const u8 *gfeatures, size_t f);
features: more general accessor functions. As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-03-13 16:41:55 +01:00
#define COMPULSORY_FEATURE(x) (x)
#define OPTIONAL_FEATURE(x) ((x)+1)
/* BOLT #9:
*
* ## Assigned `localfeatures` flags
*...
* | Bits | Name |...
Update to latest BOLT version. And remove the FIXMEs now that the gossip_query extension is merged. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-06-28 04:01:21 +02:00
* | 0/1 | `option_data_loss_protect` |...
features: more general accessor functions. As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-03-13 16:41:55 +01:00
* | 3 | `initial_routing_sync` |...
* | 4/5 | `option_upfront_shutdown_script` |...
features: define LOCAL_GOSSIP_QUERIES feature. From BOLT #9 proposed update. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-06-04 06:17:25 +02:00
* | 6/7 | `gossip_queries` |...
features: more general accessor functions. As we add more features, the current code is insufficient. 1. Keep an array of single feature bits, for easy switching on and off. 2. Create feature_offered() which checks for both compulsory and optional variants. 3. Invert requires_unsupported_features() and unsupported_features() which tend to be double-negative, all_supported_features() and features_supported(). 4. Move single feature definition from wire/peer_wire.h to common/features.h. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-03-13 16:41:55 +01:00
*/
#define LOCAL_DATA_LOSS_PROTECT 0
#define LOCAL_INITIAL_ROUTING_SYNC 2
#define LOCAL_UPFRONT_SHUTDOWN_SCRIPT 4
features: define LOCAL_GOSSIP_QUERIES feature. From BOLT #9 proposed update. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-06-04 06:17:25 +02:00
#define LOCAL_GOSSIP_QUERIES 6
features: Move feature-handling code to a common/features.c source.
2018-01-12 14:35:52 +01:00
#endif /* LIGHTNING_COMMON_FEATURES_H */
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