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authorTom Herbert <tom@herbertland.com>2016-08-28 14:43:19 -0700
committerDavid S. Miller <davem@davemloft.net>2016-08-28 23:32:41 -0400
commit96a59083478d1ea66684c59c073424a9d4e6ac6d (patch)
tree09a988530d4c5e17bf47f16f2c624bc93ac14018 /net/kcm
parenttcp: Set read_sock and peek_len proto_ops (diff)
downloadlinux-dev-96a59083478d1ea66684c59c073424a9d4e6ac6d.tar.xz
linux-dev-96a59083478d1ea66684c59c073424a9d4e6ac6d.zip
kcm: Remove TCP specific references from kcm and strparser
kcm and strparser need to work with any type of stream socket not just TCP. Eliminate references to TCP and call generic proto_ops functions of read_sock and peek_len. Also in strp_init check if the socket support the proto_ops read_sock and peek_len. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/kcm')
-rw-r--r--net/kcm/kcmsock.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index eb731cacc325..2632ac748371 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -26,7 +26,6 @@
#include <net/kcm.h>
#include <net/netns/generic.h>
#include <net/sock.h>
-#include <net/tcp.h>
#include <uapi/linux/kcm.h>
unsigned int kcm_net_id;
@@ -340,7 +339,7 @@ static void unreserve_rx_kcm(struct kcm_psock *psock,
}
/* Lower sock lock held */
-static void psock_tcp_data_ready(struct sock *sk)
+static void psock_data_ready(struct sock *sk)
{
struct kcm_psock *psock;
@@ -348,7 +347,7 @@ static void psock_tcp_data_ready(struct sock *sk)
psock = (struct kcm_psock *)sk->sk_user_data;
if (likely(psock))
- strp_tcp_data_ready(&psock->strp);
+ strp_data_ready(&psock->strp);
read_unlock_bh(&sk->sk_callback_lock);
}
@@ -392,7 +391,7 @@ static int kcm_read_sock_done(struct strparser *strp, int err)
return err;
}
-static void psock_tcp_state_change(struct sock *sk)
+static void psock_state_change(struct sock *sk)
{
/* TCP only does a POLLIN for a half close. Do a POLLHUP here
* since application will normally not poll with POLLIN
@@ -402,7 +401,7 @@ static void psock_tcp_state_change(struct sock *sk)
report_csk_error(sk, EPIPE);
}
-static void psock_tcp_write_space(struct sock *sk)
+static void psock_write_space(struct sock *sk)
{
struct kcm_psock *psock;
struct kcm_mux *mux;
@@ -1383,19 +1382,12 @@ static int kcm_attach(struct socket *sock, struct socket *csock,
struct list_head *head;
int index = 0;
struct strp_callbacks cb;
-
- if (csock->ops->family != PF_INET &&
- csock->ops->family != PF_INET6)
- return -EINVAL;
+ int err;
csk = csock->sk;
if (!csk)
return -EINVAL;
- /* Only support TCP for now */
- if (csk->sk_protocol != IPPROTO_TCP)
- return -EINVAL;
-
psock = kmem_cache_zalloc(kcm_psockp, GFP_KERNEL);
if (!psock)
return -ENOMEM;
@@ -1409,7 +1401,11 @@ static int kcm_attach(struct socket *sock, struct socket *csock,
cb.parse_msg = kcm_parse_func_strparser;
cb.read_sock_done = kcm_read_sock_done;
- strp_init(&psock->strp, csk, &cb);
+ err = strp_init(&psock->strp, csk, &cb);
+ if (err) {
+ kmem_cache_free(kcm_psockp, psock);
+ return err;
+ }
sock_hold(csk);
@@ -1418,9 +1414,9 @@ static int kcm_attach(struct socket *sock, struct socket *csock,
psock->save_write_space = csk->sk_write_space;
psock->save_state_change = csk->sk_state_change;
csk->sk_user_data = psock;
- csk->sk_data_ready = psock_tcp_data_ready;
- csk->sk_write_space = psock_tcp_write_space;
- csk->sk_state_change = psock_tcp_state_change;
+ csk->sk_data_ready = psock_data_ready;
+ csk->sk_write_space = psock_write_space;
+ csk->sk_state_change = psock_state_change;
write_unlock_bh(&csk->sk_callback_lock);
/* Finished initialization, now add the psock to the MUX. */