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https://github.com/openvswitch/ovs
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b02475c53b
This patch implements use-space datapath and non-datapath code to match and use the datapath API set out in Leo Alterman's patch "user-space datapath: Add basic MPLS support to kernel". The resulting MPLS implementation supports: * Pushing a single MPLS label * Poping a single MPLS label * Modifying an MPLS lable using set-field or load actions that act on the label value, tc and bos bit. * There is no support for manipulating the TTL this is considered future work. The single-level push pop limitation is implemented by processing push, pop and set-field/load actions in order and discarding information that would require multiple levels of push/pop to be supported. e.g. push,push -> the first push is discarded pop,pop -> the first pop is discarded This patch is based heavily on work by Ravi K. Cc: Ravi K <rkerur@gmail.com> Reviewed-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Ben Pfaff <blp@nicira.com>
160 lines
7.4 KiB
C
160 lines
7.4 KiB
C
/*
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* Copyright (c) 2009, 2010, 2011, 2012 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 MATCH_H
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#define MATCH_H 1
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#include "flow.h"
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struct ds;
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/* A flow classification match.
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*
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* Use one of the match_*() functions to initialize a "struct match".
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*
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* The match_*() functions below maintain the following important invariant.
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* If a bit or a field is wildcarded in 'wc', then the corresponding bit or
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* field in 'flow' is set to all-0-bits. (The match_zero_wildcarded_fields()
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* function can be used to restore this invariant after adding wildcards.) */
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struct match {
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struct flow flow;
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struct flow_wildcards wc;
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};
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void match_init(struct match *,
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const struct flow *, const struct flow_wildcards *);
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void match_wc_init(struct match *match, const struct flow *flow);
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void match_init_catchall(struct match *);
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void match_init_exact(struct match *, const struct flow *);
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void match_zero_wildcarded_fields(struct match *);
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void match_set_reg(struct match *, unsigned int reg_idx, uint32_t value);
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void match_set_reg_masked(struct match *, unsigned int reg_idx,
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uint32_t value, uint32_t mask);
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void match_set_metadata(struct match *, ovs_be64 metadata);
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void match_set_metadata_masked(struct match *,
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ovs_be64 metadata, ovs_be64 mask);
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void match_set_tun_id(struct match *, ovs_be64 tun_id);
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void match_set_tun_id_masked(struct match *, ovs_be64 tun_id, ovs_be64 mask);
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void match_set_tun_src(struct match *match, ovs_be32 src);
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void match_set_tun_src_masked(struct match *match, ovs_be32 src, ovs_be32 mask);
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void match_set_tun_dst(struct match *match, ovs_be32 dst);
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void match_set_tun_dst_masked(struct match *match, ovs_be32 dst, ovs_be32 mask);
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void match_set_tun_ttl(struct match *match, uint8_t ttl);
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void match_set_tun_ttl_masked(struct match *match, uint8_t ttl, uint8_t mask);
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void match_set_tun_tos(struct match *match, uint8_t tos);
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void match_set_tun_tos_masked(struct match *match, uint8_t tos, uint8_t mask);
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void match_set_tun_flags(struct match *match, uint16_t flags);
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void match_set_tun_flags_masked(struct match *match, uint16_t flags, uint16_t mask);
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void match_set_in_port(struct match *, uint16_t ofp_port);
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void match_set_skb_mark(struct match *, uint32_t skb_mark);
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void match_set_skb_priority(struct match *, uint32_t skb_priority);
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void match_set_dl_type(struct match *, ovs_be16);
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void match_set_dl_src(struct match *, const uint8_t[6]);
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void match_set_dl_src_masked(struct match *, const uint8_t dl_src[6],
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const uint8_t mask[6]);
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void match_set_dl_dst(struct match *, const uint8_t[6]);
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void match_set_dl_dst_masked(struct match *, const uint8_t dl_dst[6],
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const uint8_t mask[6]);
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void match_set_dl_tci(struct match *, ovs_be16 tci);
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void match_set_dl_tci_masked(struct match *, ovs_be16 tci, ovs_be16 mask);
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void match_set_any_vid(struct match *);
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void match_set_dl_vlan(struct match *, ovs_be16);
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void match_set_vlan_vid(struct match *, ovs_be16);
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void match_set_vlan_vid_masked(struct match *, ovs_be16 vid, ovs_be16 mask);
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void match_set_any_pcp(struct match *);
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void match_set_dl_vlan_pcp(struct match *, uint8_t);
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void match_set_any_mpls_label(struct match *);
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void match_set_mpls_label(struct match *, ovs_be32);
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void match_set_any_mpls_tc(struct match *);
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void match_set_mpls_tc(struct match *, uint8_t);
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void match_set_any_mpls_bos(struct match *);
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void match_set_mpls_bos(struct match *, uint8_t);
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void match_set_tp_src(struct match *, ovs_be16);
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void match_set_tp_src_masked(struct match *, ovs_be16 port, ovs_be16 mask);
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void match_set_tp_dst(struct match *, ovs_be16);
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void match_set_tp_dst_masked(struct match *, ovs_be16 port, ovs_be16 mask);
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void match_set_nw_proto(struct match *, uint8_t);
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void match_set_nw_src(struct match *, ovs_be32);
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void match_set_nw_src_masked(struct match *, ovs_be32 ip, ovs_be32 mask);
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void match_set_nw_dst(struct match *, ovs_be32);
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void match_set_nw_dst_masked(struct match *, ovs_be32 ip, ovs_be32 mask);
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void match_set_nw_dscp(struct match *, uint8_t);
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void match_set_nw_ecn(struct match *, uint8_t);
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void match_set_nw_ttl(struct match *, uint8_t);
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void match_set_nw_frag(struct match *, uint8_t nw_frag);
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void match_set_nw_frag_masked(struct match *, uint8_t nw_frag, uint8_t mask);
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void match_set_icmp_type(struct match *, uint8_t);
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void match_set_icmp_code(struct match *, uint8_t);
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void match_set_arp_sha(struct match *, const uint8_t[6]);
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void match_set_arp_sha_masked(struct match *,
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const uint8_t arp_sha[6],
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const uint8_t mask[6]);
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void match_set_arp_tha(struct match *, const uint8_t[6]);
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void match_set_arp_tha_masked(struct match *,
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const uint8_t arp_tha[6],
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const uint8_t mask[6]);
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void match_set_ipv6_src(struct match *, const struct in6_addr *);
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void match_set_ipv6_src_masked(struct match *, const struct in6_addr *,
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const struct in6_addr *);
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void match_set_ipv6_dst(struct match *, const struct in6_addr *);
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void match_set_ipv6_dst_masked(struct match *, const struct in6_addr *,
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const struct in6_addr *);
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void match_set_ipv6_label(struct match *, ovs_be32);
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void match_set_ipv6_label_masked(struct match *, ovs_be32, ovs_be32);
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void match_set_nd_target(struct match *, const struct in6_addr *);
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void match_set_nd_target_masked(struct match *, const struct in6_addr *,
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const struct in6_addr *);
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bool match_equal(const struct match *, const struct match *);
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uint32_t match_hash(const struct match *, uint32_t basis);
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void match_format(const struct match *, struct ds *, unsigned int priority);
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char *match_to_string(const struct match *, unsigned int priority);
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void match_print(const struct match *);
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/* Compressed match. */
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/* A sparse representation of a "struct match".
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*
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* This has the same invariant as "struct match", that is, a 1-bit in the
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* 'flow' must correspond to a 1-bit in 'mask'.
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*
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* The invariants for the underlying miniflow and minimask are also maintained,
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* which means that 'flow' and 'mask' can have different 'map's. In
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* particular, if the match checks that a given 32-bit field has value 0, then
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* 'map' will have a 1-bit in 'mask' but a 0-bit in 'flow' for that field. */
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struct minimatch {
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struct miniflow flow;
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struct minimask mask;
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};
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void minimatch_init(struct minimatch *, const struct match *);
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void minimatch_clone(struct minimatch *, const struct minimatch *);
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void minimatch_destroy(struct minimatch *);
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void minimatch_expand(const struct minimatch *, struct match *);
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bool minimatch_equal(const struct minimatch *a, const struct minimatch *b);
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uint32_t minimatch_hash(const struct minimatch *, uint32_t basis);
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void minimatch_format(const struct minimatch *, struct ds *,
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unsigned int priority);
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char *minimatch_to_string(const struct minimatch *, unsigned int priority);
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#endif /* match.h */
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