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https://github.com/openvswitch/ovs
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4ea96698f6
Fragmentation handling is added for supporting conntrack. Both v4 and v6 are supported. After discussion with several people, I decided to not store configuration state in the database to be more consistent with the kernel in future, similarity with other conntrack configuration which will not be in the database as well and overall simplicity. Accordingly, fragmentation handling is enabled by default. This patch enables fragmentation tests for the userspace datapath. Signed-off-by: Darrell Ball <dlu998@gmail.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* Copyright (c) 2019 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef IPF_H
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#define IPF_H 1
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#include "dp-packet.h"
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#include "openvswitch/types.h"
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struct ipf;
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struct ipf_proto_status {
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uint64_t nfrag_accepted;
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uint64_t nfrag_completed_sent;
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uint64_t nfrag_expired_sent;
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uint64_t nfrag_too_small;
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uint64_t nfrag_overlap;
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uint64_t nfrag_purged;
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unsigned int min_frag_size;
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bool enabled;
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};
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struct ipf_status {
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struct ipf_proto_status v4;
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struct ipf_proto_status v6;
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unsigned int nfrag;
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unsigned int nfrag_max;
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};
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struct ipf *ipf_init(void);
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void ipf_destroy(struct ipf *ipf);
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void ipf_preprocess_conntrack(struct ipf *ipf, struct dp_packet_batch *pb,
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long long now, ovs_be16 dl_type, uint16_t zone,
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uint32_t hash_basis);
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void ipf_postprocess_conntrack(struct ipf *ipf, struct dp_packet_batch *pb,
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long long now, ovs_be16 dl_type);
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int ipf_set_enabled(struct ipf *ipf, bool v6, bool enable);
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int ipf_set_min_frag(struct ipf *ipf, bool v6, uint32_t value);
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int ipf_set_max_nfrags(struct ipf *ipf, uint32_t value);
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int ipf_get_status(struct ipf *ipf, struct ipf_status *ipf_status);
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struct ipf_dump_ctx;
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int ipf_dump_start(struct ipf_dump_ctx **ipf_dump_ctx);
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int ipf_dump_next(struct ipf *ipf, struct ipf_dump_ctx *ipf_dump_ctx,
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char **dump);
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int ipf_dump_done(struct ipf_dump_ctx *ipf_dump_ctx);
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#endif /* ipf.h */
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