IPv6: reassembly: replace magic number with macro definitions

[safe/jmp/linux-2.6] / include / net / ipv6.h

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 4736d8f..299bbf5 100644 (file)
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -110,51 +110,57 @@ struct frag_hdr {
 extern int sysctl_mld_max_msf;
 extern struct ctl_path net_ipv6_ctl_path[];
 
-#define _DEVINC(statname, modifier, idev, field)                       \
+#define _DEVINC(net, statname, modifier, idev, field)                  \
 ({                                                                     \
        struct inet6_dev *_idev = (idev);                               \
        if (likely(_idev != NULL))                                      \
                SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
-       SNMP_INC_STATS##modifier(statname##_statistics, (field));       \
+       SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
 })
 
-#define _DEVADD(statname, modifier, idev, field, val)                  \
+#define _DEVADD(net, statname, modifier, idev, field, val)             \
 ({                                                                     \
        struct inet6_dev *_idev = (idev);                               \
        if (likely(_idev != NULL))                                      \
                SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
-       SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\
+       SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
+})
+
+#define _DEVUPD(net, statname, modifier, idev, field, val)             \
+({                                                                     \
+       struct inet6_dev *_idev = (idev);                               \
+       if (likely(_idev != NULL))                                      \
+               SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
+       SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
 })
 
 /* MIBs */
-DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
-
-#define IP6_INC_STATS(net, idev,field) ({ (void)(net); \
-               _DEVINC(ipv6, , idev, field); })
-#define IP6_INC_STATS_BH(net, idev,field) ({ (void)(net); \
-               _DEVINC(ipv6, _BH, idev, field); })
-#define IP6_ADD_STATS_BH(net, idev,field,val) ({ (void)(net); \
-               _DEVADD(ipv6, _BH, idev, field, val); })
-
-DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
-DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics);
-
-#define ICMP6_INC_STATS(net, idev, field)      ({ (void)(net); \
-               _DEVINC(icmpv6, , idev, field); })
-#define ICMP6_INC_STATS_BH(net, idev, field)   ({ (void)(net); \
-               _DEVINC(icmpv6, _BH, idev, field); })
-
-#define ICMP6MSGOUT_INC_STATS(net, idev, field) ({ (void)(net); \
-       _DEVINC(icmpv6msg, , idev, field +256); })
-#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) ({ (void)(net); \
-       _DEVINC(icmpv6msg, _BH, idev, field +256); })
-#define ICMP6MSGIN_INC_STATS(idev, field) \
-        _DEVINC(icmpv6msg, , idev, field)
-#define ICMP6MSGIN_INC_STATS_BH(idev, field) \
-       _DEVINC(icmpv6msg, _BH, idev, field)
-
-struct ip6_ra_chain
-{
+
+#define IP6_INC_STATS(net, idev,field)         \
+               _DEVINC(net, ipv6, , idev, field)
+#define IP6_INC_STATS_BH(net, idev,field)      \
+               _DEVINC(net, ipv6, _BH, idev, field)
+#define IP6_ADD_STATS(net, idev,field,val)     \
+               _DEVADD(net, ipv6, , idev, field, val)
+#define IP6_ADD_STATS_BH(net, idev,field,val)  \
+               _DEVADD(net, ipv6, _BH, idev, field, val)
+#define IP6_UPD_PO_STATS(net, idev,field,val)   \
+               _DEVUPD(net, ipv6, , idev, field, val)
+#define IP6_UPD_PO_STATS_BH(net, idev,field,val)   \
+               _DEVUPD(net, ipv6, _BH, idev, field, val)
+#define ICMP6_INC_STATS(net, idev, field)      \
+               _DEVINC(net, icmpv6, , idev, field)
+#define ICMP6_INC_STATS_BH(net, idev, field)   \
+               _DEVINC(net, icmpv6, _BH, idev, field)
+
+#define ICMP6MSGOUT_INC_STATS(net, idev, field)                \
+       _DEVINC(net, icmpv6msg, , idev, field +256)
+#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field)     \
+       _DEVINC(net, icmpv6msg, _BH, idev, field +256)
+#define ICMP6MSGIN_INC_STATS_BH(net, idev, field)      \
+       _DEVINC(net, icmpv6msg, _BH, idev, field)
+
+struct ip6_ra_chain {
        struct ip6_ra_chain     *next;
        struct sock             *sk;
        int                     sel;
@@ -169,8 +175,7 @@ extern rwlock_t ip6_ra_lock;
    ancillary data and passed to IPv6.
  */
 
-struct ipv6_txoptions
-{
+struct ipv6_txoptions {
        /* Length of this structure */
        int                     tot_len;
 
@@ -187,8 +192,7 @@ struct ipv6_txoptions
        /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
 };
 
-struct ip6_flowlabel
-{
+struct ip6_flowlabel {
        struct ip6_flowlabel    *next;
        __be32                  label;
        atomic_t                users;
@@ -202,11 +206,10 @@ struct ip6_flowlabel
        struct net              *fl_net;
 };
 
-#define IPV6_FLOWINFO_MASK     __constant_htonl(0x0FFFFFFF)
-#define IPV6_FLOWLABEL_MASK    __constant_htonl(0x000FFFFF)
+#define IPV6_FLOWINFO_MASK     cpu_to_be32(0x0FFFFFFF)
+#define IPV6_FLOWLABEL_MASK    cpu_to_be32(0x000FFFFF)
 
-struct ipv6_fl_socklist
-{
+struct ipv6_fl_socklist {
        struct ipv6_fl_socklist *next;
        struct ip6_flowlabel    *fl;
 };
@@ -243,6 +246,8 @@ extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
 int ip6_frag_nqueues(struct net *net);
 int ip6_frag_mem(struct net *net);
 
+#define IPV6_FRAG_HIGH_THRESH  262144          /* == 256*1024 */
+#define IPV6_FRAG_LOW_THRESH   196608          /* == 192*1024 */
 #define IPV6_FRAG_TIMEOUT      (60*HZ)         /* 60 seconds */
 
 extern int __ipv6_addr_type(const struct in6_addr *addr);
@@ -347,8 +352,16 @@ static inline int ipv6_prefix_equal(const struct in6_addr *a1,
 
 struct inet_frag_queue;
 
+enum ip6_defrag_users {
+       IP6_DEFRAG_LOCAL_DELIVER,
+       IP6_DEFRAG_CONNTRACK_IN,
+       IP6_DEFRAG_CONNTRACK_OUT,
+       IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
+};
+
 struct ip6_create_arg {
        __be32 id;
+       u32 user;
        struct in6_addr *src;
        struct in6_addr *dst;
 };
@@ -434,6 +447,18 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add
        return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
 }
 
+static __inline__ void ipv6_select_ident(struct frag_hdr *fhdr)
+{
+       static u32 ipv6_fragmentation_id = 1;
+       static DEFINE_SPINLOCK(ip6_id_lock);
+
+       spin_lock_bh(&ip6_id_lock);
+       fhdr->identification = htonl(ipv6_fragmentation_id);
+       if (++ipv6_fragmentation_id == 0)
+               ipv6_fragmentation_id = 1;
+       spin_unlock_bh(&ip6_id_lock);
+}
+
 /*
  *     Prototypes exported by ipv6
  */
@@ -531,7 +556,7 @@ extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
 extern int                     ipv6_setsockopt(struct sock *sk, int level, 
                                                int optname,
                                                char __user *optval, 
-                                               int optlen);
+                                               unsigned int optlen);
 extern int                     ipv6_getsockopt(struct sock *sk, int level, 
                                                int optname,
                                                char __user *optval, 
@@ -540,7 +565,7 @@ extern int                  compat_ipv6_setsockopt(struct sock *sk,
                                                int level,
                                                int optname,
                                                char __user *optval,
-                                               int optlen);
+                                               unsigned int optlen);
 extern int                     compat_ipv6_getsockopt(struct sock *sk,
                                                int level,
                                                int optname,