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gossipd: Use channels map to lookup pending cannouncements

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Iterating over lists is so 1980s

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2018-02-03 16:51:15 +01:00 committed by Rusty Russell
parent b09666c51c
commit f6c9c4fc3a
3 changed files with 12 additions and 23 deletions
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1
gossipd/gossip.c
View File

@ -797,6 +797,7 @@ static void handle_local_add_channel(struct peer *peer, u8 *msg)
chan->public = false;
uintmap_add(&rstate->channels, short_channel_id_to_uint(&scid), chan);
chan->pending = NULL;
direction = get_channel_direction(&rstate->local_id, &remote_node_id);
c = half_add_connection(rstate, &rstate->local_id, &remote_node_id, &scid, direction);
channel_add_connection(rstate, chan, c);

31
gossipd/routing.c
View File

@ -33,8 +33,6 @@
/* We've unpacked and checked its signatures, now we wait for master to tell
* us the txout to check */
struct pending_cannouncement {
struct list_node list;
/* Unpacked fields here */
struct short_channel_id short_channel_id;
struct pubkey node_id_1;
@ -569,21 +567,6 @@ static bool check_channel_announcement(
check_signed_hash(&hash, bitcoin2_sig, bitcoin2_key);
}
/* While master always processes in order, bitcoind is async, so they could
* theoretically return out of order. */
static struct pending_cannouncement *
find_pending_cannouncement(struct routing_state *rstate,
const struct short_channel_id *scid)
{
struct pending_cannouncement *i;
list_for_each(&rstate->pending_cannouncement, i, list) {
if (short_channel_id_eq(scid, &i->short_channel_id))
return i;
}
return NULL;
}
struct routing_channel *routing_channel_new(const tal_t *ctx,
struct short_channel_id *scid)
{
@ -740,7 +723,9 @@ const struct short_channel_id *handle_channel_announcement(
&pending->short_channel_id));
/* So you're new in town, ey? Let's find you a room in the Inn. */
chan = routing_channel_new(chan, &pending->short_channel_id);
if (chan == NULL)
chan = routing_channel_new(rstate, &pending->short_channel_id);
chan->pending = tal_steal(chan, pending);
/* The channel will be public if we complete the verification */
chan->public = true;
@ -751,7 +736,6 @@ const struct short_channel_id *handle_channel_announcement(
add_pending_node_announcement(rstate, &pending->node_id_1);
add_pending_node_announcement(rstate, &pending->node_id_2);
list_add_tail(&rstate->pending_cannouncement, &pending->list);
return &pending->short_channel_id;
}
@ -770,9 +754,9 @@ bool handle_pending_cannouncement(struct routing_state *rstate,
chan = uintmap_get(&rstate->channels, uscid);
assert(chan);
pending = find_pending_cannouncement(rstate, scid);
pending = chan->pending;
assert(pending);
list_del_from(&rstate->pending_cannouncement, &pending->list);
chan->pending = NULL;
tag = tal_arr(pending, u8, 0);
towire_short_channel_id(&tag, scid);
@ -858,9 +842,10 @@ static bool update_to_pending(struct routing_state *rstate,
u32 timestamp, const u8 *update,
const u8 direction)
{
struct pending_cannouncement *pending;
u64 uscid = short_channel_id_to_uint(scid);
struct routing_channel *chan = uintmap_get(&rstate->channels, uscid);
struct pending_cannouncement *pending = chan?chan->pending:NULL;
pending = find_pending_cannouncement(rstate, scid);
if (!pending)
return false;

3
gossipd/routing.h
View File

@ -85,6 +85,7 @@ bool node_map_node_eq(const struct node *n, const secp256k1_pubkey *key);
HTABLE_DEFINE_TYPE(struct node, node_map_keyof_node, node_map_hash_key, node_map_node_eq, node_map);
struct pending_node_map;
struct pending_cannouncement;
enum txout_state {
TXOUT_FETCHING,
@ -104,6 +105,8 @@ struct routing_channel {
/* Is this a public channel, or was it only added locally? */
bool public;
struct pending_cannouncement *pending;
};
struct routing_state {