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author | sreejith <sreejith.surendrannair@linaro.org> | 2017-03-29 01:15:02 -0400 |
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committer | sreejith <sreejith.surendrannair@linaro.org> | 2017-03-29 02:23:59 -0400 |
commit | a23197980e40d4d9414bcfaf59005a1dc2a89251 (patch) | |
tree | da3fc5410a9cda99e05d2e0f6dae06072a0c50b8 /vpp/plugins/vcgn-plugin/vcgn/cnat_global.c | |
parent | 746b57564deede624261ab8a96c94f562f24d22c (diff) |
Added vpp intial source code from master branch 17.01.1
Change-Id: I81bdace6f330825a1746a853766779dfb24765fd
Signed-off-by: sreejith <sreejith.surendrannair@linaro.org>
Diffstat (limited to 'vpp/plugins/vcgn-plugin/vcgn/cnat_global.c')
-rw-r--r-- | vpp/plugins/vcgn-plugin/vcgn/cnat_global.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/vpp/plugins/vcgn-plugin/vcgn/cnat_global.c b/vpp/plugins/vcgn-plugin/vcgn/cnat_global.c new file mode 100644 index 00000000..71770834 --- /dev/null +++ b/vpp/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)); +} + |