[PATCH net-next 2/3] tcp: Set read_sock and peek_len proto_ops

[Tom Herbert]

In inet_stream_ops we set read_sock to tcp_read_sock and peek_len to
tcp_peek_len (which is just a stub function that calls tcp_inq).

Signed-off-by: Tom Herbert <t...@herbertland.com>
---
 include/net/tcp.h   | 2 ++
 net/ipv4/af_inet.c  | 2 ++
 net/ipv4/tcp.c      | 6 ++++++
 net/ipv6/af_inet6.c | 2 ++
 4 files changed, 12 insertions(+)

diff --git a/include/net/tcp.h b/include/net/tcp.h
index d56666a..a5af6be 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 989a362..e94b47b 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 f1a9a0a..60a4388 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 b454055..46ad699 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,
-- 
2.8.0.rc2