tls: rx: don't store the decryption status in socket context

[ Upstream commit 7dc59c33d6 ]

Similar justification to previous change, the information
about decryption status belongs in the skb.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: f7fa16d49837 ("tls: decrement decrypt_pending if no async completion will be called")
Signed-off-by: Sasha Levin <sashal@kernel.org>

include/net/strparser.h

@@ -72,6 +72,7 @@ struct sk_skb_cb {
 	u64 temp_reg;
 	struct tls_msg {
 		u8 control;
+		u8 decrypted;
 	} tls;
 };
 

include/net/tls.h

@@ -147,7 +147,6 @@ struct tls_sw_context_rx {
 
 	struct sk_buff *recv_pkt;
 	u8 async_capable:1;
-	u8 decrypted:1;
 	atomic_t decrypt_pending;
 	/* protect crypto_wait with decrypt_pending*/
 	spinlock_t decrypt_compl_lock;

net/tls/tls_device.c

@@ -936,6 +936,7 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
 			 struct sk_buff *skb, struct strp_msg *rxm)
 {
 	struct tls_offload_context_rx *ctx = tls_offload_ctx_rx(tls_ctx);
+	struct tls_msg *tlm = tls_msg(skb);
 	int is_decrypted = skb->decrypted;
 	int is_encrypted = !is_decrypted;
 	struct sk_buff *skb_iter;
@@ -950,7 +951,7 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
 				   tls_ctx->rx.rec_seq, rxm->full_len,
 				   is_encrypted, is_decrypted);
 
-	ctx->sw.decrypted |= is_decrypted;
+	tlm->decrypted |= is_decrypted;
 
 	if (unlikely(test_bit(TLS_RX_DEV_DEGRADED, &tls_ctx->flags))) {
 		if (likely(is_encrypted || is_decrypted))

net/tls/tls_sw.c

@@ -1560,9 +1560,10 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 	struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);
 	struct tls_prot_info *prot = &tls_ctx->prot_info;
 	struct strp_msg *rxm = strp_msg(skb);
+	struct tls_msg *tlm = tls_msg(skb);
 	int pad, err = 0;
 
-	if (!ctx->decrypted) {
+	if (!tlm->decrypted) {
 		if (tls_ctx->rx_conf == TLS_HW) {
 			err = tls_device_decrypted(sk, tls_ctx, skb, rxm);
 			if (err < 0)
@@ -1570,7 +1571,7 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 		}
 
 		/* Still not decrypted after tls_device */
-		if (!ctx->decrypted) {
+		if (!tlm->decrypted) {
 			err = decrypt_internal(sk, skb, dest, NULL, chunk, zc,
 					       async);
 			if (err < 0) {
@@ -1594,7 +1595,7 @@ 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 = 1;
+		tlm->decrypted = 1;
 		ctx->saved_data_ready(sk);
 	} else {
 		*zc = false;
@@ -2137,8 +2138,9 @@ 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);
+	struct tls_msg *tlm = tls_msg(skb);
 
-	ctx->decrypted = 0;
+	tlm->decrypted = 0;
 
 	ctx->recv_pkt = skb;
 	strp_pause(strp);