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authorOle Troan <ot@cisco.com>2016-06-24 20:10:30 +0200
committerDave Barach <openvpp@barachs.net>2016-06-27 15:04:00 +0000
commitea3e1fc8754d7ebeca85ecc448b263f6ccb6ae6f (patch)
tree5aa3322e4bf45f2b621a5b62f58fdc8bd4d7bca1 /plugins/vcgn-plugin/vcgn/cnat_global.c
parentaa6920e0a80d8271be1dda59f613a1d2b0e1d3e6 (diff)
Plugins: Clean up the plugin directory so that each plugin has its own
directory and GNU autotools setup. Change-Id: I6c59d1297389c9413db0c0b9bdf3b759080bf1b8 Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'plugins/vcgn-plugin/vcgn/cnat_global.c')
-rw-r--r--plugins/vcgn-plugin/vcgn/cnat_global.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/plugins/vcgn-plugin/vcgn/cnat_global.c b/plugins/vcgn-plugin/vcgn/cnat_global.c
new file mode 100644
index 00000000000..7177083466e
--- /dev/null
+++ b/plugins/vcgn-plugin/vcgn/cnat_global.c
@@ -0,0 +1,79 @@
+/*
+ *------------------------------------------------------------------
+ * cnat_global.c - global variables
+ *
+ * Copyright (c) 2008-2009, 2012 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.
+ *------------------------------------------------------------------
+ */
+
+/* gloable variables */
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vppinfra/error.h>
+#include <vnet/buffer.h>
+
+#include "dslite_defs.h"
+#include "tcp_header_definitions.h"
+u32 cnat_current_time;
+u8 nfv9_configured = 0;
+/* ctx/sf alloc error counters */
+u32 null_enq_pkt;
+u32 null_deq_pkt;
+
+u32 null_enq_ctx;
+u32 null_deq_ctx;
+
+u32 null_enq_wqe;
+u32 null_deq_wqe;
+
+u32 ctx_alloc_errs;
+u32 sf_alloc_errs;
+
+u32 rcv_pkt_errs;
+
+/* TOBE_PORTED : Remove following once we bring DSLite */
+u32 dslite_config_debug_level = 1;
+u32 dslite_data_path_debug_level = 1;
+u32 dslite_defrag_debug_level = 1;
+u32 dslite_debug_level = 1;
+
+dslite_table_entry_t *dslite_table_db_ptr;
+
+/*
+ * ipv4_decr_ttl_n_calc_csum()
+ * - It decrements the TTL and calculates the incremental IPv4 checksum
+ */
+
+/* TOBE_PORTED: Following is in cnat_util.c */
+always_inline __attribute__((unused))
+void ipv4_decr_ttl_n_calc_csum(ipv4_header *ipv4)
+{
+ u32 checksum;
+ u16 old;
+ u16 ttl;
+
+ ttl = ipv4->ttl;
+ old = clib_net_to_host_u16(ttl);
+
+ /* Decrement TTL */
+ ipv4->ttl--;
+
+ /* Calculate incremental checksum */
+ checksum = old + (~clib_net_to_host_u16(ttl) & 0xFFFF);
+ checksum += clib_net_to_host_u16(ipv4->checksum);
+ checksum = (checksum & 0xFFFF) + (checksum >> 16);
+ ipv4->checksum = clib_host_to_net_u32(checksum + (checksum >> 16));
+}
+