lib/ipf.h

   1 /*
   2  * Copyright (c) 2019 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef IPF_H
  18 #define IPF_H 1
  19
  20 #include "dp-packet.h"
  21 #include "openvswitch/types.h"
  22
  23 struct ipf;
  24
  25 struct ipf_proto_status {
  26    uint64_t nfrag_accepted;
  27    uint64_t nfrag_completed_sent;
  28    uint64_t nfrag_expired_sent;
  29    uint64_t nfrag_too_small;
  30    uint64_t nfrag_overlap;
  31    uint64_t nfrag_purged;
  32    unsigned int min_frag_size;
  33    bool enabled;
  34 };
  35
  36 struct ipf_status {
  37    struct ipf_proto_status v4;
  38    struct ipf_proto_status v6;
  39    unsigned int nfrag;
  40    unsigned int nfrag_max;
  41 };
  42
  43 struct ipf *ipf_init(void);
  44 void ipf_destroy(struct ipf *ipf);
  45 void ipf_preprocess_conntrack(struct ipf *ipf, struct dp_packet_batch *pb,
  46                               long long now, ovs_be16 dl_type, uint16_t zone,
  47                               uint32_t hash_basis);
  48
  49 void ipf_postprocess_conntrack(struct ipf *ipf, struct dp_packet_batch *pb,
  50                                long long now, ovs_be16 dl_type);
  51
  52 int ipf_set_enabled(struct ipf *ipf, bool v6, bool enable);
  53 int ipf_set_min_frag(struct ipf *ipf, bool v6, uint32_t value);
  54 int ipf_set_max_nfrags(struct ipf *ipf, uint32_t value);
  55 int ipf_get_status(struct ipf *ipf, struct ipf_status *ipf_status);
  56
  57 struct ipf_dump_ctx;
  58 int ipf_dump_start(struct ipf_dump_ctx **ipf_dump_ctx);
  59 int ipf_dump_next(struct ipf *ipf, struct ipf_dump_ctx *ipf_dump_ctx,
  60                   char **dump);
  61 int ipf_dump_done(struct ipf_dump_ctx *ipf_dump_ctx);
  62
  63 #endif /* ipf.h */