[ICSK] compat: Introduce inet_csk_compat_[gs]etsockopt

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 43 insertions, 36 deletions

diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 59b214995f2..6d7aef9647d 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -522,14 +522,10 @@ EXPORT_SYMBOL_GPL(dccp_setsockopt);
 int compat_dccp_setsockopt(struct sock *sk, int level, int optname,
                     char __user *optval, int optlen)
 {
-        if (level != SOL_DCCP) {
-                if (inet_csk(sk)->icsk_af_ops->compat_setsockopt)
-                        return inet_csk(sk)->icsk_af_ops->compat_setsockopt(sk,
-                                level, optname, optval, optlen);
-                else
-                        return inet_csk(sk)->icsk_af_ops->setsockopt(sk,
-                                level, optname, optval, optlen);
-        }
+        if (level != SOL_DCCP)
+                return inet_csk_compat_setsockopt(sk, level, optname,
+                                                  optval, optlen);
+
         return do_dccp_setsockopt(sk, level, optname, optval, optlen);
 }
 EXPORT_SYMBOL_GPL(compat_dccp_setsockopt);
@@ -619,14 +615,9 @@ EXPORT_SYMBOL_GPL(dccp_getsockopt);
 int compat_dccp_getsockopt(struct sock *sk, int level, int optname,
                     char __user *optval, int __user *optlen)
 {
-        if (level != SOL_DCCP) {
-                if (inet_csk(sk)->icsk_af_ops->compat_setsockopt)
-                        return inet_csk(sk)->icsk_af_ops->compat_getsockopt(sk,
-                                level, optname, optval, optlen);
-                else
-                        return inet_csk(sk)->icsk_af_ops->getsockopt(sk,
-                                level, optname, optval, optlen);
-        }
+        if (level != SOL_DCCP)
+                return inet_csk_compat_getsockopt(sk, level, optname,
+                                                  optval, optlen);
         return do_dccp_getsockopt(sk, level, optname, optval, optlen);
 }
 EXPORT_SYMBOL_GPL(compat_dccp_getsockopt);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 359f48cec99..9f6b44ca28a 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -667,3 +667,33 @@ int inet_csk_ctl_sock_create(struct socket **sock, unsigned short family,
 }
 
 EXPORT_SYMBOL_GPL(inet_csk_ctl_sock_create);
+
+#ifdef CONFIG_COMPAT
+int inet_csk_compat_getsockopt(struct sock *sk, int level, int optname,
+                               char __user *optval, int __user *optlen)
+{
+        const struct inet_csk *icsk = inet_csk(sk);
+
+        if (icsk->icsk_af_ops->compat_getsockopt != NULL)
+                return icsk->icsk_af_ops->compat_getsockopt(sk, level, optname,
+                                                            optval, optlen);
+        return icsk->icsk_af_ops->getsockopt(sk, level, optname,
+                                             optval, optlen);
+}
+
+EXPORT_SYMBOL_GPL(inet_csk_compat_getsockopt);
+
+int inet_csk_compat_setsockopt(struct sock *sk, int level, int optname,
+                               char __user *optval, int optlen)
+{
+        const struct inet_csk *icsk = inet_csk(sk);
+
+        if (icsk->icsk_af_ops->compat_setsockopt != NULL)
+                return icsk->icsk_af_ops->compat_setsockopt(sk, level, optname,
+                                                            optval, optlen);
+        return icsk->icsk_af_ops->setsockopt(sk, level, optname,
+                                             optval, optlen);
+}
+
+EXPORT_SYMBOL_GPL(inet_csk_compat_setsockopt);
+#endif
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 31b0123a969..89da253e33f 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1882,16 +1882,9 @@ int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 int compat_tcp_setsockopt(struct sock *sk, int level,
                 int optname, char __user *optval, int optlen)
 {
-        struct inet_connection_sock *icsk = inet_csk(sk);
-
-        if (level != SOL_TCP) {
-                if (icsk->icsk_af_ops->compat_setsockopt)
-                        return icsk->icsk_af_ops->compat_setsockopt(sk,
-                                level, optname, optval, optlen);
-                else
-                        return icsk->icsk_af_ops->setsockopt(sk,
-                                level, optname, optval, optlen);
-        }
+        if (level != SOL_TCP)
+                return inet_csk_compat_setsockopt(sk, level, optname,
+                                                  optval, optlen);
         return do_tcp_setsockopt(sk, level, optname, optval, optlen);
 }
 #endif
@@ -2061,16 +2054,9 @@ int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
 int compat_tcp_getsockopt(struct sock *sk, int level,
                 int optname, char __user *optval, int __user *optlen)
 {
-        struct inet_connection_sock *icsk = inet_csk(sk);
-
-        if (level != SOL_TCP) {
-                if (icsk->icsk_af_ops->compat_getsockopt)
-                        return icsk->icsk_af_ops->compat_getsockopt(sk,
-                                level, optname, optval, optlen);
-                else
-                        return icsk->icsk_af_ops->getsockopt(sk,
-                                level, optname, optval, optlen);
-        }
+        if (level != SOL_TCP)
+                return inet_csk_compat_getsockopt(sk, level, optname,
+                                                  optval, optlen);
         return do_tcp_getsockopt(sk, level, optname, optval, optlen);
 }
 #endif