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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
commit7a6362800cb7d1d618a697a650c7aaed3eb39320 (patch)
tree087f9bc6c13ef1fad4b392c5cf9325cd28fa8523 /include/linux/netfilter/ipset/ip_set_timeout.h
parent6445ced8670f37cfc2c5e24a9de9b413dbfc788d (diff)
parentceda86a108671294052cbf51660097b6534672f5 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits) bonding: enable netpoll without checking link status xfrm: Refcount destination entry on xfrm_lookup net: introduce rx_handler results and logic around that bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag bonding: wrap slave state work net: get rid of multiple bond-related netdevice->priv_flags bonding: register slave pointer for rx_handler be2net: Bump up the version number be2net: Copyright notice change. Update to Emulex instead of ServerEngines e1000e: fix kconfig for crc32 dependency netfilter ebtables: fix xt_AUDIT to work with ebtables xen network backend driver bonding: Improve syslog message at device creation time bonding: Call netif_carrier_off after register_netdevice bonding: Incorrect TX queue offset net_sched: fix ip_tos2prio xfrm: fix __xfrm_route_forward() be2net: Fix UDP packet detected status in RX compl Phonet: fix aligned-mode pipe socket buffer header reserve netxen: support for GbE port settings ... Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c with the staging updates.
Diffstat (limited to 'include/linux/netfilter/ipset/ip_set_timeout.h')
-rw-r--r--include/linux/netfilter/ipset/ip_set_timeout.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/include/linux/netfilter/ipset/ip_set_timeout.h b/include/linux/netfilter/ipset/ip_set_timeout.h
new file mode 100644
index 000000000000..9f30c5f2ec1c
--- /dev/null
+++ b/include/linux/netfilter/ipset/ip_set_timeout.h
@@ -0,0 +1,127 @@
+#ifndef _IP_SET_TIMEOUT_H
+#define _IP_SET_TIMEOUT_H
+
+/* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifdef __KERNEL__
+
+/* How often should the gc be run by default */
+#define IPSET_GC_TIME (3 * 60)
+
+/* Timeout period depending on the timeout value of the given set */
+#define IPSET_GC_PERIOD(timeout) \
+ ((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1)
+
+/* Set is defined without timeout support: timeout value may be 0 */
+#define IPSET_NO_TIMEOUT UINT_MAX
+
+#define with_timeout(timeout) ((timeout) != IPSET_NO_TIMEOUT)
+
+static inline unsigned int
+ip_set_timeout_uget(struct nlattr *tb)
+{
+ unsigned int timeout = ip_set_get_h32(tb);
+
+ /* Userspace supplied TIMEOUT parameter: adjust crazy size */
+ return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout;
+}
+
+#ifdef IP_SET_BITMAP_TIMEOUT
+
+/* Bitmap specific timeout constants and macros for the entries */
+
+/* Bitmap entry is unset */
+#define IPSET_ELEM_UNSET 0
+/* Bitmap entry is set with no timeout value */
+#define IPSET_ELEM_PERMANENT (UINT_MAX/2)
+
+static inline bool
+ip_set_timeout_test(unsigned long timeout)
+{
+ return timeout != IPSET_ELEM_UNSET &&
+ (timeout == IPSET_ELEM_PERMANENT ||
+ time_after(timeout, jiffies));
+}
+
+static inline bool
+ip_set_timeout_expired(unsigned long timeout)
+{
+ return timeout != IPSET_ELEM_UNSET &&
+ timeout != IPSET_ELEM_PERMANENT &&
+ time_before(timeout, jiffies);
+}
+
+static inline unsigned long
+ip_set_timeout_set(u32 timeout)
+{
+ unsigned long t;
+
+ if (!timeout)
+ return IPSET_ELEM_PERMANENT;
+
+ t = timeout * HZ + jiffies;
+ if (t == IPSET_ELEM_UNSET || t == IPSET_ELEM_PERMANENT)
+ /* Bingo! */
+ t++;
+
+ return t;
+}
+
+static inline u32
+ip_set_timeout_get(unsigned long timeout)
+{
+ return timeout == IPSET_ELEM_PERMANENT ? 0 : (timeout - jiffies)/HZ;
+}
+
+#else
+
+/* Hash specific timeout constants and macros for the entries */
+
+/* Hash entry is set with no timeout value */
+#define IPSET_ELEM_PERMANENT 0
+
+static inline bool
+ip_set_timeout_test(unsigned long timeout)
+{
+ return timeout == IPSET_ELEM_PERMANENT ||
+ time_after(timeout, jiffies);
+}
+
+static inline bool
+ip_set_timeout_expired(unsigned long timeout)
+{
+ return timeout != IPSET_ELEM_PERMANENT &&
+ time_before(timeout, jiffies);
+}
+
+static inline unsigned long
+ip_set_timeout_set(u32 timeout)
+{
+ unsigned long t;
+
+ if (!timeout)
+ return IPSET_ELEM_PERMANENT;
+
+ t = timeout * HZ + jiffies;
+ if (t == IPSET_ELEM_PERMANENT)
+ /* Bingo! :-) */
+ t++;
+
+ return t;
+}
+
+static inline u32
+ip_set_timeout_get(unsigned long timeout)
+{
+ return timeout == IPSET_ELEM_PERMANENT ? 0 : (timeout - jiffies)/HZ;
+}
+#endif /* ! IP_SET_BITMAP_TIMEOUT */
+
+#endif /* __KERNEL__ */
+
+#endif /* _IP_SET_TIMEOUT_H */