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gossip: Adding locally added channels to channels map

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Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2018-02-01 16:10:01 +01:00 committed by Rusty Russell
parent 26b5588656
commit a88076b1b0
3 changed files with 55 additions and 7 deletions
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6
gossipd/gossip.c
View File

@ -771,6 +771,7 @@ static void handle_local_add_channel(struct peer *peer, u8 *msg)
u32 fee_base_msat, fee_proportional_millionths;
u64 htlc_minimum_msat;
struct node_connection *c;
struct routing_channel *chan;
if (!fromwire_gossip_local_add_channel(
msg, NULL, &scid, &chain_hash, &remote_node_id, &flags,
@ -792,8 +793,13 @@ static void handle_local_add_channel(struct peer *peer, u8 *msg)
return;
}
chan = routing_channel_new(rstate, &scid);
chan->public = false;
uintmap_add(&rstate->channels, short_channel_id_to_uint(&scid), chan);
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);
c->active = true;
c->last_timestamp = 0;

44
gossipd/routing.c
View File

@ -565,8 +565,8 @@ find_pending_cannouncement(struct routing_state *rstate,
return NULL;
}
static struct routing_channel *
routing_channel_new(const tal_t *ctx, struct short_channel_id *scid)
struct routing_channel *routing_channel_new(const tal_t *ctx,
struct short_channel_id *scid)
{
struct routing_channel *chan = tal(ctx, struct routing_channel);
chan->scid = *scid;
@ -574,10 +574,34 @@ routing_channel_new(const tal_t *ctx, struct short_channel_id *scid)
chan->nodes[0] = chan->nodes[1] = NULL;
chan->txout_script = NULL;
chan->state = TXOUT_FETCHING;
chan->public = false;
memset(&chan->msg_indexes, 0, sizeof(chan->msg_indexes));
return chan;
}
static void remove_connection_from_channel(struct node_connection *nc,
struct routing_state *rstate)
{
struct routing_channel *chan = uintmap_get(
&rstate->channels, short_channel_id_to_uint(&nc->short_channel_id));
struct node_connection *c = chan->connections[nc->flags & 0x1];
if (c == NULL)
return;
/* If we found a channel it should be the same */
assert(nc == c);
chan->connections[nc->flags & 0x1] = NULL;
}
void channel_add_connection(struct routing_state *rstate,
struct routing_channel *chan,
struct node_connection *nc)
{
int direction = get_channel_direction(&nc->src->id, &nc->dst->id);
assert(chan != NULL);
chan->connections[direction] = nc;
tal_add_destructor2(nc, remove_connection_from_channel, rstate);
}
const struct short_channel_id *handle_channel_announcement(
struct routing_state *rstate,
const u8 *announce TAKES)
@ -617,7 +641,7 @@ const struct short_channel_id *handle_channel_announcement(
/* Check if we know the channel already (no matter in what
* state, we stop here if yes). */
chan = uintmap_get(&rstate->channels, scid);
if (chan != NULL) {
if (chan != NULL && chan->public) {
return tal_free(pending);
}
/* FIXME: Handle duplicates as per BOLT #7 */
@ -673,6 +697,9 @@ const struct short_channel_id *handle_channel_announcement(
/* 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);
/* The channel will be public if we complete the verification */
chan->public = true;
uintmap_add(&rstate->channels, scid, chan);
list_add_tail(&rstate->pending_cannouncement, &pending->list);
@ -742,10 +769,13 @@ bool handle_pending_cannouncement(struct routing_state *rstate,
c1 = get_connection(rstate, &pending->node_id_1, &pending->node_id_2);
forward = !c0 || !c1 || !c0->channel_announcement || !c1->channel_announcement;
add_channel_direction(rstate, &pending->node_id_1, &pending->node_id_2,
&pending->short_channel_id, pending->announce);
add_channel_direction(rstate, &pending->node_id_2, &pending->node_id_1,
&pending->short_channel_id, pending->announce);
c0 = add_channel_direction(rstate, &pending->node_id_1, &pending->node_id_2,
&pending->short_channel_id, pending->announce);
c1 = add_channel_direction(rstate, &pending->node_id_2, &pending->node_id_1,
&pending->short_channel_id, pending->announce);
channel_add_connection(rstate, chan, c0);
channel_add_connection(rstate, chan, c1);
if (forward) {
if (replace_broadcast(rstate->broadcasts,

12
gossipd/routing.h
View File

@ -96,6 +96,9 @@ struct routing_channel {
struct node *nodes[2];
u64 msg_indexes[3];
/* Is this a public channel, or was it only added locally? */
bool public;
};
struct routing_state {
@ -180,6 +183,15 @@ void routing_failure(struct routing_state *rstate,
enum onion_type failcode,
const u8 *channel_update);
/* routing_channel constructor */
struct routing_channel *routing_channel_new(const tal_t *ctx,
struct short_channel_id *scid);
/* Add the connection to the channel */
void channel_add_connection(struct routing_state *rstate,
struct routing_channel *chan,
struct node_connection *nc);
/* Utility function that, given a source and a destination, gives us
* the direction bit the matching channel should get */
#define get_channel_direction(from, to) (pubkey_cmp(from, to) > 0)