[DCCP]: Introduce CCID getsockopt for the CCIDs

Allocation for the optnames is similar to the DCCP options, with a
range for rx and tx half connection CCIDs.

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

1 files changed, 31 insertions, 0 deletions

diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
index 962f1e9e2f7e..21e55142dcd3 100644
--- a/net/dccp/ccid.h
+++ b/net/dccp/ccid.h
@@ -14,6 +14,7 @@
  */
 
 #include <net/sock.h>
+#include <linux/compiler.h>
 #include <linux/dccp.h>
 #include <linux/list.h>
 #include <linux/module.h>
@@ -54,6 +55,14 @@ struct ccid {
                                                struct tcp_info *info);
         void            (*ccid_hc_tx_get_info)(struct sock *sk,
                                                struct tcp_info *info);
+        int             (*ccid_hc_rx_getsockopt)(struct sock *sk,
+                                                 const int optname, int len,
+                                                 u32 __user *optval,
+                                                 int __user *optlen);
+        int             (*ccid_hc_tx_getsockopt)(struct sock *sk,
+                                                 const int optname, int len,
+                                                 u32 __user *optval,
+                                                 int __user *optlen);
 };
 
 extern int         ccid_register(struct ccid *ccid);
@@ -177,4 +186,26 @@ static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk,
         if (ccid->ccid_hc_tx_get_info != NULL)
                 ccid->ccid_hc_tx_get_info(sk, info);
 }
+
+static inline int ccid_hc_rx_getsockopt(struct ccid *ccid, struct sock *sk,
+                                        const int optname, int len,
+                                        u32 __user *optval, int __user *optlen)
+{
+        int rc = -ENOPROTOOPT;
+        if (ccid->ccid_hc_rx_getsockopt != NULL)
+                rc = ccid->ccid_hc_rx_getsockopt(sk, optname, len,
+                                                 optval, optlen);
+        return rc;
+}
+
+static inline int ccid_hc_tx_getsockopt(struct ccid *ccid, struct sock *sk,
+                                        const int optname, int len,
+                                        u32 __user *optval, int __user *optlen)
+{
+        int rc = -ENOPROTOOPT;
+        if (ccid->ccid_hc_tx_getsockopt != NULL)
+                rc = ccid->ccid_hc_tx_getsockopt(sk, optname, len,
+                                                 optval, optlen);
+        return rc;
+}
 #endif /* _CCID_H */