Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/ide-2.6

[cascardo/linux.git] / net / core / sock.c

diff --git a/net/core/sock.c b/net/core/sock.c
index 7633422..7626b6a 100644 (file)
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -142,7 +142,7 @@ static struct lock_class_key af_family_slock_keys[AF_MAX];
  * strings build-time, so that runtime initialization of socket
  * locks is fast):
  */
-static const char *af_family_key_strings[AF_MAX+1] = {
+static const char *const af_family_key_strings[AF_MAX+1] = {
   "sk_lock-AF_UNSPEC", "sk_lock-AF_UNIX"     , "sk_lock-AF_INET"     ,
   "sk_lock-AF_AX25"  , "sk_lock-AF_IPX"      , "sk_lock-AF_APPLETALK",
   "sk_lock-AF_NETROM", "sk_lock-AF_BRIDGE"   , "sk_lock-AF_ATMPVC"   ,
@@ -158,7 +158,7 @@ static const char *af_family_key_strings[AF_MAX+1] = {
   "sk_lock-AF_IEEE802154",
   "sk_lock-AF_MAX"
 };
-static const char *af_family_slock_key_strings[AF_MAX+1] = {
+static const char *const af_family_slock_key_strings[AF_MAX+1] = {
   "slock-AF_UNSPEC", "slock-AF_UNIX"     , "slock-AF_INET"     ,
   "slock-AF_AX25"  , "slock-AF_IPX"      , "slock-AF_APPLETALK",
   "slock-AF_NETROM", "slock-AF_BRIDGE"   , "slock-AF_ATMPVC"   ,
@@ -174,7 +174,7 @@ static const char *af_family_slock_key_strings[AF_MAX+1] = {
   "slock-AF_IEEE802154",
   "slock-AF_MAX"
 };
-static const char *af_family_clock_key_strings[AF_MAX+1] = {
+static const char *const af_family_clock_key_strings[AF_MAX+1] = {
   "clock-AF_UNSPEC", "clock-AF_UNIX"     , "clock-AF_INET"     ,
   "clock-AF_AX25"  , "clock-AF_IPX"      , "clock-AF_APPLETALK",
   "clock-AF_NETROM", "clock-AF_BRIDGE"   , "clock-AF_ATMPVC"   ,
@@ -446,7 +446,7 @@ static inline void sock_valbool_flag(struct sock *sk, int bit, int valbool)
  */
 
 int sock_setsockopt(struct socket *sock, int level, int optname,
-                   char __user *optval, int optlen)
+                   char __user *optval, unsigned int optlen)
 {
        struct sock *sk = sock->sk;
        int val;
@@ -482,6 +482,8 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
                sk->sk_reuse = valbool;
                break;
        case SO_TYPE:
+       case SO_PROTOCOL:
+       case SO_DOMAIN:
        case SO_ERROR:
                ret = -ENOPROTOOPT;
                break;
@@ -764,6 +766,14 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
                v.val = sk->sk_type;
                break;
 
+       case SO_PROTOCOL:
+               v.val = sk->sk_protocol;
+               break;
+
+       case SO_DOMAIN:
+               v.val = sk->sk_family;
+               break;
+
        case SO_ERROR:
                v.val = -sock_error(sk);
                if (v.val == 0)
@@ -1196,12 +1206,12 @@ EXPORT_SYMBOL_GPL(sk_setup_caps);
 
 void __init sk_init(void)
 {
-       if (num_physpages <= 4096) {
+       if (totalram_pages <= 4096) {
                sysctl_wmem_max = 32767;
                sysctl_rmem_max = 32767;
                sysctl_wmem_default = 32767;
                sysctl_rmem_default = 32767;
-       } else if (num_physpages >= 131072) {
+       } else if (totalram_pages >= 131072) {
                sysctl_wmem_max = 131071;
                sysctl_rmem_max = 131071;
        }
@@ -1218,17 +1228,22 @@ void __init sk_init(void)
 void sock_wfree(struct sk_buff *skb)
 {
        struct sock *sk = skb->sk;
-       int res;
+       unsigned int len = skb->truesize;
 
-       /* In case it might be waiting for more memory. */
-       res = atomic_sub_return(skb->truesize, &sk->sk_wmem_alloc);
-       if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE))
+       if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE)) {
+               /*
+                * Keep a reference on sk_wmem_alloc, this will be released
+                * after sk_write_space() call
+                */
+               atomic_sub(len - 1, &sk->sk_wmem_alloc);
                sk->sk_write_space(sk);
+               len = 1;
+       }
        /*
-        * if sk_wmem_alloc reached 0, we are last user and should
-        * free this sock, as sk_free() call could not do it.
+        * if sk_wmem_alloc reaches 0, we must finish what sk_free()
+        * could not do because of in-flight packets
         */
-       if (res == 0)
+       if (atomic_sub_and_test(len, &sk->sk_wmem_alloc))
                __sk_free(sk);
 }
 EXPORT_SYMBOL(sock_wfree);
@@ -1687,7 +1702,7 @@ int sock_no_shutdown(struct socket *sock, int how)
 EXPORT_SYMBOL(sock_no_shutdown);
 
 int sock_no_setsockopt(struct socket *sock, int level, int optname,
-                   char __user *optval, int optlen)
+                   char __user *optval, unsigned int optlen)
 {
        return -EOPNOTSUPP;
 }
@@ -2008,7 +2023,7 @@ EXPORT_SYMBOL(sock_common_recvmsg);
  *     Set socket options on an inet socket.
  */
 int sock_common_setsockopt(struct socket *sock, int level, int optname,
-                          char __user *optval, int optlen)
+                          char __user *optval, unsigned int optlen)
 {
        struct sock *sk = sock->sk;
 
@@ -2018,7 +2033,7 @@ EXPORT_SYMBOL(sock_common_setsockopt);
 
 #ifdef CONFIG_COMPAT
 int compat_sock_common_setsockopt(struct socket *sock, int level, int optname,
-                                 char __user *optval, int optlen)
+                                 char __user *optval, unsigned int optlen)
 {
        struct sock *sk = sock->sk;