net/tls: don't pass version to tls_advance_record_sn()

All callers pass prot->version as the last parameter
of tls_advance_record_sn(), yet tls_advance_record_sn()
itself needs a pointer to prot.  Pass prot from callers.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tls.h

@@ -446,19 +446,15 @@ static inline struct tls_context *tls_get_ctx(const struct sock *sk)
 }
 
 static inline void tls_advance_record_sn(struct sock *sk,
-					 struct cipher_context *ctx,
-					 int version)
+					 struct tls_prot_info *prot,
+					 struct cipher_context *ctx)
 {
-	struct tls_context *tls_ctx = tls_get_ctx(sk);
-	struct tls_prot_info *prot = &tls_ctx->prot_info;
-
 	if (tls_bigint_increment(ctx->rec_seq, prot->rec_seq_size))
 		tls_err_abort(sk, EBADMSG);
 
-	if (version != TLS_1_3_VERSION) {
+	if (prot->version != TLS_1_3_VERSION)
 		tls_bigint_increment(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
 				     prot->iv_size);
-	}
 }
 
 static inline void tls_fill_prepend(struct tls_context *ctx,

net/tls/tls_device.c

@@ -264,7 +264,7 @@ static int tls_push_record(struct sock *sk,
 	list_add_tail(&record->list, &offload_ctx->records_list);
 	spin_unlock_irq(&offload_ctx->lock);
 	offload_ctx->open_record = NULL;
-	tls_advance_record_sn(sk, &ctx->tx, prot->version);
+	tls_advance_record_sn(sk, prot, &ctx->tx);
 
 	for (i = 0; i < record->num_frags; i++) {
 		frag = &record->frags[i];

net/tls/tls_sw.c

@@ -534,7 +534,7 @@ static int tls_do_encryption(struct sock *sk,
 
 	/* Unhook the record from context if encryption is not failure */
 	ctx->open_rec = NULL;
-	tls_advance_record_sn(sk, &tls_ctx->tx, prot->version);
+	tls_advance_record_sn(sk, prot, &tls_ctx->tx);
 	return rc;
 }
 
@@ -1486,7 +1486,6 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
 	struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);
 	struct tls_prot_info *prot = &tls_ctx->prot_info;
-	int version = prot->version;
 	struct strp_msg *rxm = strp_msg(skb);
 	int pad, err = 0;
 
@@ -1504,8 +1503,8 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 					       async);
 			if (err < 0) {
 				if (err == -EINPROGRESS)
-					tls_advance_record_sn(sk, &tls_ctx->rx,
-							      version);
+					tls_advance_record_sn(sk, prot,
+							      &tls_ctx->rx);
 
 				return err;
 			}
@@ -1520,7 +1519,7 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 		rxm->full_len -= pad;
 		rxm->offset += prot->prepend_size;
 		rxm->full_len -= prot->overhead_size;
-		tls_advance_record_sn(sk, &tls_ctx->rx, version);
+		tls_advance_record_sn(sk, prot, &tls_ctx->rx);
 		ctx->decrypted = true;
 		ctx->saved_data_ready(sk);
 	} else {