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tlv: Allow passing a raw pointer and a length to tlvstream_set_raw

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Allows us to do fewer allocations, since the argument doesn't have to be tal
allocated itself.

Suggested-by: Rusty Russell <@rustyrussell>
This commit is contained in:
Christian Decker
2020-07-09 10:39:22 +02:00
parent 7978a13cae
commit 514c4044c8
4 changed files with 10 additions and 12 deletions
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6
plugins/keysend.c
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@@ -55,7 +55,6 @@ static void keysend_cb(struct keysend_data *d, struct payment *p) {
struct route_hop *last_hop;
struct createonion_hop *last_payload;
size_t hopcount;
u8 *raw_preimage;
if (p->step == PAYMENT_STEP_GOT_ROUTE) {
/* Force the last step to be a TLV, we might not have an
@@ -68,13 +67,10 @@ static void keysend_cb(struct keysend_data *d, struct payment *p) {
if (p->step != PAYMENT_STEP_ONION_PAYLOAD)
return payment_continue(p);
raw_preimage = tal_dup_arr(p->createonion_request, u8, d->preimage.r,
sizeof(d->preimage), 0);
hopcount = tal_count(p->createonion_request->hops);
last_payload = &p->createonion_request->hops[hopcount - 1];
tlvstream_set_raw(&last_payload->tlv_payload->fields, PREIMAGE_TLV_TYPE,
take(raw_preimage));
&d->preimage, sizeof(struct preimage));
return payment_continue(p);
}