FD.io VPP  v19.01.2-3-gf61a1a8
Vector Packet Processing
gbp_subnet.cpp
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1 /*
2  * Copyright (c) 2018 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include "vom/gbp_subnet.hpp"
17 #include "vom/api_types.hpp"
18 #include "vom/gbp_subnet_cmds.hpp"
20 
21 namespace VOM {
22 
23 gbp_subnet::type_t::type_t(int v, const std::string s)
24  : enum_base<gbp_subnet::type_t>(v, s)
25 {
26 }
27 
28 const gbp_subnet::type_t gbp_subnet::type_t::STITCHED_INTERNAL(
29  0,
30  "stitched-internal");
31 const gbp_subnet::type_t gbp_subnet::type_t::STITCHED_EXTERNAL(
32  1,
33  "stitched-external");
34 const gbp_subnet::type_t gbp_subnet::type_t::TRANSPORT(2, "transport");
35 const gbp_subnet::type_t gbp_subnet::type_t::L3_OUT(3, "l3-out");
36 
37 singular_db<gbp_subnet::key_t, gbp_subnet> gbp_subnet::m_db;
38 
39 gbp_subnet::event_handler gbp_subnet::m_evh;
40 
42  const route::prefix_t& prefix,
43  const type_t& type)
44  : m_hw(false)
45  , m_rd(rd.singular())
46  , m_prefix(prefix)
47  , m_type(type)
48  , m_recirc(nullptr)
49  , m_epg(nullptr)
50 {
51 }
52 
54  const route::prefix_t& prefix,
55  const gbp_recirc& recirc,
56  const gbp_endpoint_group& epg)
57  : m_hw(false)
58  , m_rd(rd.singular())
59  , m_prefix(prefix)
60  , m_type(type_t::STITCHED_EXTERNAL)
61  , m_recirc(recirc.singular())
62  , m_epg(epg.singular())
63 {
64 }
65 
67  const route::prefix_t& prefix,
68  const gbp_endpoint_group& epg)
69  : m_hw(false)
70  , m_rd(rd.singular())
71  , m_prefix(prefix)
72  , m_type(type_t::L3_OUT)
73  , m_recirc(nullptr)
74  , m_epg(epg.singular())
75 {
76 }
77 
79  : m_hw(o.m_hw)
80  , m_rd(o.m_rd)
81  , m_prefix(o.m_prefix)
82  , m_type(o.m_type)
83  , m_recirc(o.m_recirc)
84  , m_epg(o.m_epg)
85 {
86 }
87 
89 {
90  sweep();
91  m_db.release(key(), this);
92 }
93 
96 {
97  return (std::make_pair(m_rd->key(), m_prefix));
98 }
99 
100 bool
102 {
103  return ((key() == gs.key()) && (m_type == gs.m_type) &&
104  (m_recirc == gs.m_recirc) && (m_epg == gs.m_epg));
105 }
106 
107 void
108 gbp_subnet::sweep()
109 {
110  if (m_hw) {
111  HW::enqueue(new gbp_subnet_cmds::delete_cmd(m_hw, m_rd->id(), m_prefix));
112  }
113  HW::write();
114 }
115 
116 void
118 {
119  if (m_hw) {
121  m_hw, m_rd->id(), m_prefix, m_type,
122  (m_recirc ? m_recirc->handle() : handle_t::INVALID),
123  (m_epg ? m_epg->id() : ~0)));
124  }
125 }
126 
127 std::string
129 {
130  std::ostringstream s;
131  s << "gbp-subnet:[" << m_type.to_string() << ", " << m_rd->to_string() << ":"
132  << m_prefix.to_string();
133  if (m_recirc)
134  s << ", " << m_recirc->to_string();
135  if (m_epg)
136  s << ", " << m_epg->to_string();
137 
138  s << "]";
139 
140  return (s.str());
141 }
142 
143 void
144 gbp_subnet::update(const gbp_subnet& r)
145 {
146  if (rc_t::OK != m_hw.rc()) {
148  m_hw, m_rd->id(), m_prefix, m_type,
149  (m_recirc ? m_recirc->handle() : handle_t::INVALID),
150  (m_epg ? m_epg->id() : ~0)));
151  } else {
152  if (m_type != r.m_type) {
153  m_epg = r.m_epg;
154  m_recirc = r.m_recirc;
155  m_type = r.m_type;
156 
158  m_hw, m_rd->id(), m_prefix, m_type,
159  (m_recirc ? m_recirc->handle() : handle_t::INVALID),
160  (m_epg ? m_epg->id() : ~0)));
161  }
162  }
163 }
164 
165 std::shared_ptr<gbp_subnet>
166 gbp_subnet::find_or_add(const gbp_subnet& temp)
167 {
168  return (m_db.find_or_add(temp.key(), temp));
169 }
170 
171 std::shared_ptr<gbp_subnet>
173 {
174  return (m_db.find(k));
175 }
176 
177 std::shared_ptr<gbp_subnet>
179 {
180  return find_or_add(*this);
181 }
182 
183 void
184 gbp_subnet::dump(std::ostream& os)
185 {
186  db_dump(m_db, os);
187 }
188 
190 {
191  OM::register_listener(this);
192  inspect::register_handler({ "gbp-subnet" }, "GBP Subnets", this);
193 }
194 
195 void
196 gbp_subnet::event_handler::handle_replay()
197 {
198  m_db.replay();
199 }
200 
201 void
202 gbp_subnet::event_handler::handle_populate(const client_db::key_t& key)
203 {
204  std::shared_ptr<gbp_subnet_cmds::dump_cmd> cmd =
205  std::make_shared<gbp_subnet_cmds::dump_cmd>();
206 
207  HW::enqueue(cmd);
208  HW::write();
209 
210  for (auto& record : *cmd) {
211  auto& payload = record.get_payload();
212 
213  route::prefix_t pfx = from_api(payload.subnet.prefix);
214  std::shared_ptr<gbp_route_domain> rd =
215  gbp_route_domain::find(payload.subnet.rd_id);
216 
217  if (rd) {
218  switch (payload.subnet.type) {
220  gbp_subnet gs(*rd, pfx, type_t::TRANSPORT);
221  OM::commit(key, gs);
222  VOM_LOG(log_level_t::DEBUG) << "read: " << gs.to_string();
223  break;
224  }
227  OM::commit(key, gs);
228  VOM_LOG(log_level_t::DEBUG) << "read: " << gs.to_string();
229  break;
230  }
231  case GBP_API_SUBNET_L3_OUT: {
232  std::shared_ptr<gbp_endpoint_group> epg =
233  gbp_endpoint_group::find(payload.subnet.epg_id);
234 
235  gbp_subnet gs(*rd, pfx, *epg);
236  OM::commit(key, gs);
237  VOM_LOG(log_level_t::DEBUG) << "read: " << gs.to_string();
238  break;
239  }
241  std::shared_ptr<interface> itf =
242  interface::find(payload.subnet.sw_if_index);
243  std::shared_ptr<gbp_endpoint_group> epg =
244  gbp_endpoint_group::find(payload.subnet.epg_id);
245 
246  if (itf && epg) {
247  std::shared_ptr<gbp_recirc> recirc = gbp_recirc::find(itf->key());
248 
249  if (recirc) {
250  gbp_subnet gs(*rd, pfx, *recirc, *epg);
251  OM::commit(key, gs);
252  VOM_LOG(log_level_t::DEBUG) << "read: " << gs.to_string();
253  }
254  }
255  }
256  }
257  }
258  }
259 }
260 
262 gbp_subnet::event_handler::order() const
263 {
264  return (dependency_t::ENTRY);
265 }
266 
267 void
268 gbp_subnet::event_handler::show(std::ostream& os)
269 {
270  db_dump(m_db, os);
271 }
272 
273 std::ostream&
274 operator<<(std::ostream& os, const gbp_subnet::key_t& key)
275 {
276  os << "[" << key.first << ", " << key.second << "]";
277 
278  return os;
279 }
280 
281 } // namespace VOM
282 
283 /*
284  * fd.io coding-style-patch-verification: ON
285  *
286  * Local Variables:
287  * eval: (c-set-style "mozilla")
288  * End:
289  */
#define VOM_LOG(lvl)
Definition: logger.hpp:181
void db_dump(const DB &db, std::ostream &os)
Print each of the objects in the DB into the stream provided.
const std::string key_t
In the opflex world each entity is known by a URI which can be converted into a string.
Definition: client_db.hpp:51
static std::shared_ptr< interface > find(const handle_t &h)
The the singular instance of the interface in the DB by handle.
Definition: interface.cpp:527
std::shared_ptr< gbp_subnet > singular() const
Return the matching &#39;singular instance&#39;.
Definition: gbp_subnet.cpp:178
static void register_handler(const std::vector< std::string > &cmds, const std::string &help, command_handler *ch)
Register a command handler for inspection.
Definition: inspect.cpp:85
static const type_t TRANSPORT
A transport subnet, sent via the RD&#39;s UU-fwd interface.
Definition: gbp_subnet.hpp:54
static rc_t write()
Write/Execute all commands hitherto enqueued.
Definition: hw.cpp:255
static const log_level_t DEBUG
Definition: logger.hpp:32
ip_address_t from_api(const vapi_type_address &v)
Definition: api_types.cpp:53
static const handle_t INVALID
A value of an interface handle_t that means the itf does not exist.
Definition: types.hpp:268
std::string to_string() const
Convert to string for debugging.
Definition: gbp_subnet.cpp:128
rc_t rc() const
Get the HW return code.
Definition: hw.hpp:119
void replay(void)
replay the object to create it in hardware
Definition: gbp_subnet.cpp:117
static const type_t STITCHED_INTERNAL
Internal subnet is reachable through the source EPG&#39;s uplink interface.
Definition: gbp_subnet.hpp:44
~gbp_subnet()
Destructor.
Definition: gbp_subnet.cpp:88
std::string to_string() const
convert to string format for debug purposes
Definition: prefix.cpp:183
static void dump(std::ostream &os)
Dump all bridge_domain-doamin into the stream provided.
Definition: gbp_subnet.cpp:184
static std::shared_ptr< gbp_subnet > find(const key_t &k)
Find the instnace of the bridge_domain domain in the OM.
Definition: gbp_subnet.cpp:172
A recirculation interface for GBP use pre/post NAT.
Definition: gbp_recirc.hpp:27
A GBP Enpoint (i.e.
Definition: gbp_subnet.hpp:30
bool operator==(const gbp_subnet &bdae) const
comparison operator
Definition: gbp_subnet.cpp:101
std::pair< gbp_route_domain::key_t, route::prefix_t > key_t
The key for a GBP subnet; table and prefix.
Definition: gbp_subnet.hpp:36
gbp_subnet(const gbp_route_domain &rd, const route::prefix_t &prefix, const type_t &type)
Construct an internal GBP subnet.
Definition: gbp_subnet.cpp:41
const key_t key() const
Return the object&#39;s key.
Definition: gbp_subnet.cpp:95
A cmd class that deletes a GBP subnet.
static const type_t STITCHED_EXTERNAL
External subnet requires NAT translation before egress.
Definition: gbp_subnet.hpp:49
A entry in the ARP termination table of a Bridge Domain.
static rc_t commit(const client_db::key_t &key, const OBJ &obj)
Make the State in VPP reflect the expressed desired state.
Definition: om.hpp:202
void event_handler(void *tls_async)
Definition: tls_async.c:340
dependency_t
There needs to be a strict order in which object types are read from VPP (at boot time) and replayed ...
Definition: types.hpp:43
static const rc_t OK
The HW write was successfull.
Definition: types.hpp:109
static void enqueue(cmd *f)
Enqueue A command for execution.
Definition: hw.cpp:212
A command class that creates or updates the GBP subnet.
static std::shared_ptr< gbp_recirc > find(const key_t &k)
Find the instnace of the recirc interface in the OM.
Definition: gbp_recirc.cpp:121
std::ostream & operator<<(std::ostream &os, const std::pair< direction_t, interface::key_t > &key)
A entry in the ARP termination table of a Route Domain.
The VPP Object Model (VOM) library.
Definition: acl_binding.cpp:19
A representation of a method call to VPP.
Definition: cmd.hpp:32
static std::shared_ptr< gbp_route_domain > find(const key_t &k)
Find the instnace of the route_domain domain in the OM.
void show(char *chroot_path, int verbose)
Definition: svmtool.c:105
typedef prefix
Definition: ip_types.api:35
Entries in Tables.
static std::shared_ptr< gbp_endpoint_group > find(const key_t &k)
Find the instnace of the bridge_domain domain in the OM.
const std::string & to_string() const
convert to string format for debug purposes
Definition: enum_base.hpp:36
static bool register_listener(listener *listener)
Register a listener of events.
Definition: om.cpp:127
static const type_t L3_OUT
A transport subnet, sent via the RD&#39;s UU-fwd interface.
Definition: gbp_subnet.hpp:59
A prefix defintion.
Definition: prefix.hpp:92