diff --git a/include/net/tcp.h b/include/net/tcp.h
index d56666ad92496066a8b7412f1334b7ee001a34a9..a5af6be3a572bf3c49b4922a92da557429360503 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1848,6 +1848,8 @@ static inline int tcp_inq(struct sock *sk)
 	return answ;
 }
 
+int tcp_peek_len(struct socket *sock);
+
 static inline void tcp_segs_in(struct tcp_sock *tp, const struct sk_buff *skb)
 {
 	u16 segs_in;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 989a362814a9ccfb994b454da3929d3e3c1c11eb..e94b47be0019d1b7e7b41bacbb3c52aaf254a55f 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -916,6 +916,8 @@ const struct proto_ops inet_stream_ops = {
 	.mmap		   = sock_no_mmap,
 	.sendpage	   = inet_sendpage,
 	.splice_read	   = tcp_splice_read,
+	.read_sock	   = tcp_read_sock,
+	.peek_len	   = tcp_peek_len,
 #ifdef CONFIG_COMPAT
 	.compat_setsockopt = compat_sock_common_setsockopt,
 	.compat_getsockopt = compat_sock_common_getsockopt,
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f1a9a0a8a1f3e7d4891f78a5be7dbad63ae3136f..60a438864f328e038dc01456480896b72b22de1a 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1570,6 +1570,12 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
 }
 EXPORT_SYMBOL(tcp_read_sock);
 
+int tcp_peek_len(struct socket *sock)
+{
+	return tcp_inq(sock->sk);
+}
+EXPORT_SYMBOL(tcp_peek_len);
+
 /*
  *	This routine copies from a sock struct into the user buffer.
  *
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index b454055ba625a20ed6f470191ad9a6c6366edfe6..46ad699937fdcc6eaaf4b6490e6f3822ad444df8 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -545,6 +545,8 @@ const struct proto_ops inet6_stream_ops = {
 	.mmap		   = sock_no_mmap,
 	.sendpage	   = inet_sendpage,
 	.splice_read	   = tcp_splice_read,
+	.read_sock	   = tcp_read_sock,
+	.peek_len	   = tcp_peek_len,
 #ifdef CONFIG_COMPAT
 	.compat_setsockopt = compat_sock_common_setsockopt,
 	.compat_getsockopt = compat_sock_common_getsockopt,