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-rw-r--r--plugins/vcgn-plugin/vcgn/cnat_ports.h208
1 files changed, 208 insertions, 0 deletions
diff --git a/plugins/vcgn-plugin/vcgn/cnat_ports.h b/plugins/vcgn-plugin/vcgn/cnat_ports.h
new file mode 100644
index 00000000000..bc1fb0d24a8
--- /dev/null
+++ b/plugins/vcgn-plugin/vcgn/cnat_ports.h
@@ -0,0 +1,208 @@
+/*
+ *------------------------------------------------------------------
+ * cnat_ports.h - port database definitions
+ *
+ * Copyright (c) 2007-2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __CNAT_PORTS_H__
+#define __CNAT_PORTS_H__
+
+#include "platform_common.h"
+#include "cnat_bulk_port_defs.h"
+
+#define PORTS_PER_ADDR 65536
+
+#define CNAT_INSTS PLATFORM_CNAT_INSTS
+
+#define BITS_PER_INST (PORTS_PER_ADDR)
+
+/*
+ * Ensure that atleast few 4 bit ports are available for RTSP
+ * in case we want to map 4 digit inside ports to 4 digit outside ports
+ */
+#define MIN_STATIC_PORT_RANGE_FOR_RTSP (9900)
+
+extern u8 my_instance_number;
+
+/*
+ * Now it is a 1-to-1 mapping between bit and port values
+ */
+static inline u16 bit2port (u32 bit)
+{
+ return bit;
+}
+
+static inline uword port2bit (u16 port)
+{
+ return port;
+}
+
+/*
+ * Port bitmap structure
+ * THIS structure is not used to be REMOVED....
+ */
+
+
+typedef struct {
+ u32 ipv4_address; /* native bit order */
+ u16 vrf;
+ u16 pad;
+ u32 threshold_crossed;
+ uword bm[(BITS_PER_INST + BITS(uword)-1)/BITS(uword)];
+} cnat_portmap_t;
+
+//cnat_portmap_t *cnat_portmap;
+
+
+typedef struct {
+ u32 inuse;
+ u32 delete_time;
+ u32 ipv4_address; /* native bit order */
+ u32 last_sent_timestamp;
+ uword bm[(BITS_PER_INST + BITS(uword)-1)/BITS(uword)];
+ u32 dyn_full;
+ u32 private_ip_users_count; /* number of private ip's(subscribers) to this
+ public ip */
+} cnat_portmap_v2_t;
+
+
+typedef enum {
+ PORT_SINGLE=0,
+ PORT_PAIR=1,
+ PORT_S_EVEN=2,
+ PORT_S_ODD=3,
+} port_pair_t;
+
+typedef enum {
+ PORT_TYPE_DYNAMIC=0,
+ PORT_TYPE_STATIC=1,
+ PORT_TYPE_RTSP=2,
+} port_type_t;
+
+
+typedef enum {
+ PORT_ALLOC_ANY=1,
+ PORT_ALLOC_DIRECTED=2,
+} port_alloc_t;
+
+#define PORT_PROBE_LIMIT 20
+
+
+/*
+ * randq1
+ * Linear congruential random number generator with
+ * extensively studied properties. See Numerical Recipes in C
+ * 2nd Ed. page 284. Known to behave according to the test vector
+ * supplied in the text, on X86 and Octeon.
+ */
+static inline u32 randq1 (u32 prev)
+{
+ return (1664525L*prev + 1013904223L);
+}
+
+cnat_errno_t
+cnat_static_port_alloc_v2(
+ cnat_portmap_v2_t *pm,
+ port_alloc_t atype,
+ port_pair_t pair_type,
+ u32 i_ipv4_address,
+ u16 i_port,
+ u32 *index,
+ u32 *o_ipv4_address,
+ u16 *o_port,
+ u16 static_port_range
+#ifndef NO_BULK_LOGGING
+ , bulk_alloc_size_t bulk_size,
+ int *nfv9_log_req
+#endif /* NO_BULK_LOGGING */
+ , u16 ip_n_to_1
+ );
+
+cnat_errno_t
+cnat_mapped_static_port_alloc_v2 (
+ cnat_portmap_v2_t *pm,
+ port_alloc_t atype,
+ u32 *index,
+ u32 ipv4_address,
+ u16 port
+#ifndef NO_BULK_LOGGING
+ , int *nfv9_log_req,
+ bulk_alloc_size_t bulk_size
+#endif
+ , u16 ip_n_to_1
+ );
+
+cnat_errno_t
+cnat_dynamic_port_alloc_v2(
+ cnat_portmap_v2_t *pm,
+ port_alloc_t atype,
+ port_pair_t pair_type,
+ u32 *index,
+ u32 *o_ipv4_address,
+ u16 *o_port,
+ u16 static_port_range
+#ifndef NO_BULK_LOGGING
+ , bulk_alloc_size_t bulk_size,
+ int *nfv9_log_req
+#endif
+ , u16 ip_n_to_1,
+ u32 *rseed_ip
+ );
+
+
+cnat_errno_t
+cnat_dynamic_port_alloc_rtsp (
+ cnat_portmap_v2_t *pm,
+ port_alloc_t atype,
+ port_pair_t pair_type,
+ u16 start_range,
+ u16 end_range,
+ u32 *index,
+ u32 *o_ipv4_address,
+ u16 *o_port
+#ifndef NO_BULK_LOGGING
+ , bulk_alloc_size_t bulk_size,
+ int *nfv9_log_req
+#endif
+ , u32 *rseed_ip
+ );
+
+void cnat_port_free_v2(
+ cnat_portmap_v2_t *pm,
+ int index,
+ port_pair_t ptype,
+ u16 base_port,
+ u16 static_port_range);
+
+void cnat_portmap_dump_v2(cnat_portmap_v2_t *pm,
+ u16 print_limit);
+
+
+
+cnat_errno_t
+nat64_static_port_alloc (
+ cnat_portmap_v2_t *pm,
+ port_alloc_t atype,
+ port_pair_t pair_type,
+ u32 *i_ipv6_address,
+ u16 i_port,
+ u32 *index,
+ u32 *o_ipv4_address,
+ u16 *o_port);
+
+
+
+#endif /* __CNAT_PORTS_H__ */