[NET]: {get|set}sockopt compatibility layer

This patch extends {get|set}sockopt compatibility layer in order to
move protocol specific parts to their place and avoid huge universal
net/compat.c file in the future.

Signed-off-by: Dmitry Mishin <dim@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 43 insertions, 7 deletions

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index f29a12da5109..f1b02b34fc0a 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -660,12 +660,9 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o
 out:    return ret;
 }
 
-static int raw_setsockopt(struct sock *sk, int level, int optname, 
+static int do_raw_setsockopt(struct sock *sk, int level, int optname,
                           char __user *optval, int optlen)
 {
-        if (level != SOL_RAW)
-                return ip_setsockopt(sk, level, optname, optval, optlen);
-
         if (optname == ICMP_FILTER) {
                 if (inet_sk(sk)->num != IPPROTO_ICMP)
                         return -EOPNOTSUPP;
@@ -675,12 +672,28 @@ static int raw_setsockopt(struct sock *sk, int level, int optname,
         return -ENOPROTOOPT;
 }
 
-static int raw_getsockopt(struct sock *sk, int level, int optname, 
-                          char __user *optval, int __user *optlen)
+static int raw_setsockopt(struct sock *sk, int level, int optname,
+                          char __user *optval, int optlen)
 {
         if (level != SOL_RAW)
-                return ip_getsockopt(sk, level, optname, optval, optlen);
+                return ip_setsockopt(sk, level, optname, optval, optlen);
+        return do_raw_setsockopt(sk, level, optname, optval, optlen);
+}
 
+#ifdef CONFIG_COMPAT
+static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
+                          char __user *optval, int optlen)
+{
+        if (level != SOL_RAW)
+                return compat_ip_setsockopt(sk, level,
+                                optname, optval, optlen);
+        return do_raw_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
+static int do_raw_getsockopt(struct sock *sk, int level, int optname,
+                          char __user *optval, int __user *optlen)
+{
         if (optname == ICMP_FILTER) {
                 if (inet_sk(sk)->num != IPPROTO_ICMP)
                         return -EOPNOTSUPP;
@@ -690,6 +703,25 @@ static int raw_getsockopt(struct sock *sk, int level, int optname,
         return -ENOPROTOOPT;
 }
 
+static int raw_getsockopt(struct sock *sk, int level, int optname,
+                          char __user *optval, int __user *optlen)
+{
+        if (level != SOL_RAW)
+                return ip_getsockopt(sk, level, optname, optval, optlen);
+        return do_raw_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
+                          char __user *optval, int __user *optlen)
+{
+        if (level != SOL_RAW)
+                return compat_ip_getsockopt(sk, level,
+                                optname, optval, optlen);
+        return do_raw_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
         switch (cmd) {
@@ -728,6 +760,10 @@ struct proto raw_prot = {
         .init =         raw_init,
         .setsockopt =   raw_setsockopt,
         .getsockopt =   raw_getsockopt,
+#ifdef CONFIG_COMPAT
+        .compat_setsockopt =    compat_raw_setsockopt,
+        .compat_getsockopt =    compat_raw_getsockopt,
+#endif
         .sendmsg =      raw_sendmsg,
         .recvmsg =      raw_recvmsg,
         .bind =         raw_bind,