1 files changed, 65 insertions, 67 deletions

diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index daeff54bdbfa..b4864d55900f 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -422,16 +422,10 @@ static int tls_device_copy_data(void *addr, size_t bytes, struct iov_iter *i)
 	return 0;
 }
 
-union tls_iter_offset {
-	struct iov_iter *msg_iter;
-	int offset;
-};
-
 static int tls_push_data(struct sock *sk,
-			 union tls_iter_offset iter_offset,
+			 struct iov_iter *iter,
 			 size_t size, int flags,
-			 unsigned char record_type,
-			 struct page *zc_page)
+			 unsigned char record_type)
 {
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
 	struct tls_prot_info *prot = &tls_ctx->prot_info;
@@ -447,7 +441,8 @@ static int tls_push_data(struct sock *sk,
 	long timeo;
 
 	if (flags &
-	    ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_SENDPAGE_NOTLAST))
+	    ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_SENDPAGE_NOTLAST |
+	      MSG_SPLICE_PAGES))
 		return -EOPNOTSUPP;
 
 	if (unlikely(sk->sk_err))
@@ -499,21 +494,35 @@ handle_error:
 		record = ctx->open_record;
 
 		copy = min_t(size_t, size, max_open_record_len - record->len);
-		if (copy && zc_page) {
+		if (copy && (flags & MSG_SPLICE_PAGES)) {
 			struct page_frag zc_pfrag;
+			struct page **pages = &zc_pfrag.page;
+			size_t off;
+
+			rc = iov_iter_extract_pages(iter, &pages,
+						    copy, 1, 0, &off);
+			if (rc <= 0) {
+				if (rc == 0)
+					rc = -EIO;
+				goto handle_error;
+			}
+			copy = rc;
 
-			zc_pfrag.page = zc_page;
-			zc_pfrag.offset = iter_offset.offset;
+			if (WARN_ON_ONCE(!sendpage_ok(zc_pfrag.page))) {
+				iov_iter_revert(iter, copy);
+				rc = -EIO;
+				goto handle_error;
+			}
+
+			zc_pfrag.offset = off;
 			zc_pfrag.size = copy;
 			tls_append_frag(record, &zc_pfrag, copy);
-
-			iter_offset.offset += copy;
 		} else if (copy) {
 			copy = min_t(size_t, copy, pfrag->size - pfrag->offset);
 
 			rc = tls_device_copy_data(page_address(pfrag->page) +
 						  pfrag->offset, copy,
-						  iter_offset.msg_iter);
+						  iter);
 			if (rc)
 				goto handle_error;
 			tls_append_frag(record, pfrag, copy);
@@ -568,9 +577,11 @@ int tls_device_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 {
 	unsigned char record_type = TLS_RECORD_TYPE_DATA;
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
-	union tls_iter_offset iter;
 	int rc;
 
+	if (!tls_ctx->zerocopy_sendfile)
+		msg->msg_flags &= ~MSG_SPLICE_PAGES;
+
 	mutex_lock(&tls_ctx->tx_lock);
 	lock_sock(sk);
 
@@ -580,8 +591,8 @@ int tls_device_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 			goto out;
 	}
 
-	iter.msg_iter = &msg->msg_iter;
-	rc = tls_push_data(sk, iter, size, msg->msg_flags, record_type, NULL);
+	rc = tls_push_data(sk, &msg->msg_iter, size, msg->msg_flags,
+			   record_type);
 
 out:
 	release_sock(sk);
@@ -589,47 +600,42 @@ out:
 	return rc;
 }
 
-int tls_device_sendpage(struct sock *sk, struct page *page,
-			int offset, size_t size, int flags)
+void tls_device_splice_eof(struct socket *sock)
 {
+	struct sock *sk = sock->sk;
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
-	union tls_iter_offset iter_offset;
-	struct iov_iter msg_iter;
-	char *kaddr;
-	struct kvec iov;
-	int rc;
+	struct iov_iter iter = {};
 
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		flags |= MSG_MORE;
+	if (!tls_is_partially_sent_record(tls_ctx))
+		return;
 
 	mutex_lock(&tls_ctx->tx_lock);
 	lock_sock(sk);
 
-	if (flags & MSG_OOB) {
-		rc = -EOPNOTSUPP;
-		goto out;
-	}
-
-	if (tls_ctx->zerocopy_sendfile) {
-		iter_offset.offset = offset;
-		rc = tls_push_data(sk, iter_offset, size,
-				   flags, TLS_RECORD_TYPE_DATA, page);
-		goto out;
+	if (tls_is_partially_sent_record(tls_ctx)) {
+		iov_iter_bvec(&iter, ITER_SOURCE, NULL, 0, 0);
+		tls_push_data(sk, &iter, 0, 0, TLS_RECORD_TYPE_DATA);
 	}
 
-	kaddr = kmap(page);
-	iov.iov_base = kaddr + offset;
-	iov.iov_len = size;
-	iov_iter_kvec(&msg_iter, ITER_SOURCE, &iov, 1, size);
-	iter_offset.msg_iter = &msg_iter;
-	rc = tls_push_data(sk, iter_offset, size, flags, TLS_RECORD_TYPE_DATA,
-			   NULL);
-	kunmap(page);
-
-out:
 	release_sock(sk);
 	mutex_unlock(&tls_ctx->tx_lock);
-	return rc;
+}
+
+int tls_device_sendpage(struct sock *sk, struct page *page,
+			int offset, size_t size, int flags)
+{
+	struct bio_vec bvec;
+	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
+
+	if (flags & MSG_SENDPAGE_NOTLAST)
+		msg.msg_flags |= MSG_MORE;
+
+	if (flags & MSG_OOB)
+		return -EOPNOTSUPP;
+
+	bvec_set_page(&bvec, page, size, offset);
+	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
+	return tls_device_sendmsg(sk, &msg, size);
 }
 
 struct tls_record_info *tls_get_record(struct tls_offload_context_tx *context,
@@ -694,12 +700,10 @@ EXPORT_SYMBOL(tls_get_record);
 
 static int tls_device_push_pending_record(struct sock *sk, int flags)
 {
-	union tls_iter_offset iter;
-	struct iov_iter msg_iter;
+	struct iov_iter iter;
 
-	iov_iter_kvec(&msg_iter, ITER_SOURCE, NULL, 0, 0);
-	iter.msg_iter = &msg_iter;
-	return tls_push_data(sk, iter, 0, flags, TLS_RECORD_TYPE_DATA, NULL);
+	iov_iter_kvec(&iter, ITER_SOURCE, NULL, 0, 0);
+	return tls_push_data(sk, &iter, 0, flags, TLS_RECORD_TYPE_DATA);
 }
 
 void tls_device_write_space(struct sock *sk, struct tls_context *ctx)
@@ -1005,20 +1009,14 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx)
 	struct tls_sw_context_rx *sw_ctx = tls_sw_ctx_rx(tls_ctx);
 	struct sk_buff *skb = tls_strp_msg(sw_ctx);
 	struct strp_msg *rxm = strp_msg(skb);
-	int is_decrypted = skb->decrypted;
-	int is_encrypted = !is_decrypted;
-	struct sk_buff *skb_iter;
-	int left;
-
-	left = rxm->full_len - skb->len;
-	/* Check if all the data is decrypted already */
-	skb_iter = skb_shinfo(skb)->frag_list;
-	while (skb_iter && left > 0) {
-		is_decrypted &= skb_iter->decrypted;
-		is_encrypted &= !skb_iter->decrypted;
-
-		left -= skb_iter->len;
-		skb_iter = skb_iter->next;
+	int is_decrypted, is_encrypted;
+
+	if (!tls_strp_msg_mixed_decrypted(sw_ctx)) {
+		is_decrypted = skb->decrypted;
+		is_encrypted = !is_decrypted;
+	} else {
+		is_decrypted = 0;
+		is_encrypted = 0;
 	}
 
 	trace_tls_device_decrypted(sk, tcp_sk(sk)->copied_seq - rxm->full_len,