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gossipd: Implement gossip_mark_channel_unroutable.

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Temporarily marks a channel as unroutable.
This commit is contained in:
ZmnSCPxj 2018-02-06 15:32:06 +00:00 committed by Rusty Russell
parent b3d4e161b5
commit 0d0ef2c733
5 changed files with 55 additions and 0 deletions
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17
gossipd/gossip.c
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@ -1915,6 +1915,20 @@ static struct io_plan *handle_routing_failure(struct io_conn *conn,
return daemon_conn_read_next(conn, &daemon->master);
}
static struct io_plan *
handle_mark_channel_unroutable(struct io_conn *conn,
struct daemon *daemon,
const u8 *msg)
{
struct short_channel_id channel;
if (!fromwire_gossip_mark_channel_unroutable(msg, NULL, &channel))
master_badmsg(WIRE_GOSSIP_MARK_CHANNEL_UNROUTABLE, msg);
mark_channel_unroutable(daemon->rstate, &channel);
return daemon_conn_read_next(conn, &daemon->master);
}
static struct io_plan *recv_req(struct io_conn *conn, struct daemon_conn *master)
{
@ -1967,6 +1981,9 @@ static struct io_plan *recv_req(struct io_conn *conn, struct daemon_conn *master
case WIRE_GOSSIP_ROUTING_FAILURE:
return handle_routing_failure(conn, daemon, master->msg_in);
case WIRE_GOSSIP_MARK_CHANNEL_UNROUTABLE:
return handle_mark_channel_unroutable(conn, daemon, master->msg_in);
/* We send these, we don't receive them */
case WIRE_GOSSIPCTL_RELEASE_PEER_REPLY:
case WIRE_GOSSIPCTL_RELEASE_PEER_REPLYFAIL:

5
gossipd/gossip_wire.csv
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@ -204,3 +204,8 @@ gossip_routing_failure,,erring_channel,struct short_channel_id
gossip_routing_failure,,failcode,u16
gossip_routing_failure,,len,u16
gossip_routing_failure,,channel_update,len*u8
# master->gossipd temporarily mark a channel unroutable
# (used in case of unparseable onion reply)
gossip_mark_channel_unroutable,3022
gossip_mark_channel_unroutable,,channel,struct short_channel_id

1 #include <common/cryptomsg.h>
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29
gossipd/routing.c
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@ -1289,3 +1289,32 @@ void routing_failure(struct routing_state *rstate,
out:
tal_free(tmpctx);
}
void mark_channel_unroutable(struct routing_state *rstate,
const struct short_channel_id *channel)
{
const tal_t *tmpctx = tal_tmpctx(rstate);
struct routing_channel *chan;
time_t now = time_now().ts.tv_sec;
const char *scid = type_to_string(tmpctx, struct short_channel_id,
channel);
status_trace("Received mark_channel_unroutable channel %s",
scid);
chan = uintmap_get(&rstate->channels,
short_channel_id_to_uint(channel));
if (!chan) {
status_trace("UNUSUAL mark_channel_unroutable: "
"channel %s not in routemap",
scid);
tal_free(tmpctx);
return;
}
if (chan->connections[0])
chan->connections[0]->unroutable_until = now + 20;
if (chan->connections[1])
chan->connections[1]->unroutable_until = now + 20;
tal_free(tmpctx);
}

3
gossipd/routing.h
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@ -193,6 +193,9 @@ void routing_failure(struct routing_state *rstate,
const struct short_channel_id *erring_channel,
enum onion_type failcode,
const u8 *channel_update);
/* Disable specific channel from routing. */
void mark_channel_unroutable(struct routing_state *rstate,
const struct short_channel_id *channel);
/* routing_channel constructor */
struct routing_channel *routing_channel_new(const tal_t *ctx,

1
lightningd/gossip_control.c
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@ -111,6 +111,7 @@ static unsigned gossip_msg(struct subd *gossip, const u8 *msg, const int *fds)
case WIRE_GOSSIP_GET_TXOUT_REPLY:
case WIRE_GOSSIP_DISABLE_CHANNEL:
case WIRE_GOSSIP_ROUTING_FAILURE:
case WIRE_GOSSIP_MARK_CHANNEL_UNROUTABLE:
/* This is a reply, so never gets through to here. */
case WIRE_GOSSIP_GET_UPDATE_REPLY:
case WIRE_GOSSIP_GETNODES_REPLY: