counter: use correct unit for indices

Even though redundant bits == bits per long, we're indexing into
something that uses longs as its unit, so this is correct.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/data.c b/src/data.c
index 59e9714..be6bf7f 100644
--- a/src/data.c
+++ b/src/data.c
@@ -68,10 +68,10 @@ static inline bool counter_validate(union noise_counter *counter, u64 their_coun
 	if (unlikely((COUNTER_WINDOW_SIZE + their_counter) < counter->receive.counter))
 		goto out;
 
-	index = their_counter >> ilog2(COUNTER_REDUNDANT_BITS);
+	index = their_counter >> ilog2(BITS_PER_LONG);
 
 	if (likely(their_counter > counter->receive.counter)) {
-		index_current = counter->receive.counter >> ilog2(COUNTER_REDUNDANT_BITS);
+		index_current = counter->receive.counter >> ilog2(BITS_PER_LONG);
 		top = min_t(unsigned long, index - index_current, COUNTER_BITS_TOTAL / BITS_PER_LONG);
 		for (i = 1; i <= top; ++i)
 			counter->receive.backtrack[(i + index_current) & ((COUNTER_BITS_TOTAL / BITS_PER_LONG) - 1)] = 0;
@@ -79,7 +79,7 @@ static inline bool counter_validate(union noise_counter *counter, u64 their_coun
 	}
 
 	index &= (COUNTER_BITS_TOTAL / BITS_PER_LONG) - 1;
-	ret = !test_and_set_bit(their_counter & (COUNTER_REDUNDANT_BITS - 1), &counter->receive.backtrack[index]);
+	ret = !test_and_set_bit(their_counter & (BITS_PER_LONG - 1), &counter->receive.backtrack[index]);
 
 out:
 	spin_unlock_bh(&counter->receive.lock);