unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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tcp: Set read_sock and peek_len proto_ops

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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 <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2016-08-28 14:43:18 -07:00 committed by David S. Miller
parent 0294b625ad
commit 3203558589
4 changed files with 12 additions and 0 deletions
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2
include/net/tcp.h
View file

@ -1848,6 +1848,8 @@ static inline int tcp_inq(struct sock *sk)
return answ; return answ;
} }
int tcp_peek_len(struct socket *sock);
static inline void tcp_segs_in(struct tcp_sock *tp, const struct sk_buff *skb) static inline void tcp_segs_in(struct tcp_sock *tp, const struct sk_buff *skb)
{ {
u16 segs_in; u16 segs_in;

2
net/ipv4/af_inet.c
View file

@ -916,6 +916,8 @@ const struct proto_ops inet_stream_ops = {
.mmap = sock_no_mmap, .mmap = sock_no_mmap,
.sendpage = inet_sendpage, .sendpage = inet_sendpage,
.splice_read = tcp_splice_read, .splice_read = tcp_splice_read,
.read_sock = tcp_read_sock,
.peek_len = tcp_peek_len,
#ifdef CONFIG_COMPAT #ifdef CONFIG_COMPAT
.compat_setsockopt = compat_sock_common_setsockopt, .compat_setsockopt = compat_sock_common_setsockopt,
.compat_getsockopt = compat_sock_common_getsockopt, .compat_getsockopt = compat_sock_common_getsockopt,

6
net/ipv4/tcp.c
View file

@ -1570,6 +1570,12 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
} }
EXPORT_SYMBOL(tcp_read_sock); 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. * This routine copies from a sock struct into the user buffer.
* *

2
net/ipv6/af_inet6.c
View file

@ -545,6 +545,8 @@ const struct proto_ops inet6_stream_ops = {
.mmap = sock_no_mmap, .mmap = sock_no_mmap,
.sendpage = inet_sendpage, .sendpage = inet_sendpage,
.splice_read = tcp_splice_read, .splice_read = tcp_splice_read,
.read_sock = tcp_read_sock,
.peek_len = tcp_peek_len,
#ifdef CONFIG_COMPAT #ifdef CONFIG_COMPAT
.compat_setsockopt = compat_sock_common_setsockopt, .compat_setsockopt = compat_sock_common_setsockopt,
.compat_getsockopt = compat_sock_common_getsockopt, .compat_getsockopt = compat_sock_common_getsockopt,