net/tls: store decrypted on a single bit

Use a single bit instead of boolean to remember if packet
was already decrypted.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tls.h

@@ -153,7 +153,7 @@ struct tls_sw_context_rx {
 	struct sk_buff *recv_pkt;
 	u8 control;
 	u8 async_capable:1;
-	bool decrypted;
+	u8 decrypted:1;
 	atomic_t decrypt_pending;
 	bool async_notify;
 };

net/tls/tls_sw.c

@@ -1523,7 +1523,7 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 		rxm->offset += prot->prepend_size;
 		rxm->full_len -= prot->overhead_size;
 		tls_advance_record_sn(sk, prot, &tls_ctx->rx);
-		ctx->decrypted = true;
+		ctx->decrypted = 1;
 		ctx->saved_data_ready(sk);
 	} else {
 		*zc = false;
@@ -1933,7 +1933,7 @@ ssize_t tls_sw_splice_read(struct socket *sock,  loff_t *ppos,
 			tls_err_abort(sk, EBADMSG);
 			goto splice_read_end;
 		}
-		ctx->decrypted = true;
+		ctx->decrypted = 1;
 	}
 	rxm = strp_msg(skb);
 
@@ -2034,7 +2034,7 @@ static void tls_queue(struct strparser *strp, struct sk_buff *skb)
 	struct tls_context *tls_ctx = tls_get_ctx(strp->sk);
 	struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);
 
-	ctx->decrypted = false;
+	ctx->decrypted = 0;
 
 	ctx->recv_pkt = skb;
 	strp_pause(strp);