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777af88d AC |
1 | /* |
2 | * Copyright (c) 2013, 2014 Alexandru Copot <alex.mihai.c@gmail.com>, with support from IXIA. | |
3 | * Copyright (c) 2013, 2014 Daniel Baluta <dbaluta@ixiacom.com> | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | #include <config.h> | |
19 | ||
20 | #include "coverage.h" | |
21 | #include "fail-open.h" | |
22 | #include "in-band.h" | |
23 | #include "odp-util.h" | |
24 | #include "ofp-actions.h" | |
25 | #include "ofp-msgs.h" | |
26 | #include "ofp-util.h" | |
27 | #include "ofpbuf.h" | |
28 | #include "ofproto-provider.h" | |
29 | #include "pinsched.h" | |
30 | #include "poll-loop.h" | |
31 | #include "pktbuf.h" | |
32 | #include "rconn.h" | |
33 | #include "shash.h" | |
34 | #include "simap.h" | |
35 | #include "stream.h" | |
36 | #include "timeval.h" | |
37 | #include "vconn.h" | |
38 | #include "vlog.h" | |
39 | ||
40 | #include "bundles.h" | |
41 | ||
42 | VLOG_DEFINE_THIS_MODULE(bundles); | |
43 | ||
44 | enum bundle_state { | |
45 | BS_OPEN, | |
46 | BS_CLOSED | |
47 | }; | |
48 | ||
49 | struct ofp_bundle { | |
50 | struct hmap_node node; /* In struct ofconn's "bundles" hmap. */ | |
51 | uint32_t id; | |
52 | uint16_t flags; | |
53 | enum bundle_state state; | |
54 | ||
55 | /* List of 'struct bundle_message's */ | |
ca6ba700 | 56 | struct ovs_list msg_list; |
777af88d AC |
57 | }; |
58 | ||
59 | struct bundle_message { | |
60 | struct ofp_header *msg; | |
ca6ba700 | 61 | struct ovs_list node; /* Element in 'struct ofp_bundles's msg_list */ |
777af88d AC |
62 | }; |
63 | ||
64 | static uint32_t | |
65 | bundle_hash(uint32_t id) | |
66 | { | |
67 | return hash_int(id, 0); | |
68 | } | |
69 | ||
70 | static struct ofp_bundle * | |
71 | ofp_bundle_find(struct hmap *bundles, uint32_t id) | |
72 | { | |
73 | struct ofp_bundle *bundle; | |
74 | ||
75 | HMAP_FOR_EACH_IN_BUCKET(bundle, node, bundle_hash(id), bundles) { | |
76 | if (bundle->id == id) { | |
77 | return bundle; | |
78 | } | |
79 | } | |
80 | ||
81 | return NULL; | |
82 | } | |
83 | ||
84 | static struct ofp_bundle * | |
85 | ofp_bundle_create(uint32_t id, uint16_t flags) | |
86 | { | |
87 | struct ofp_bundle *bundle; | |
88 | ||
89 | bundle = xmalloc(sizeof(*bundle)); | |
90 | ||
91 | bundle->id = id; | |
92 | bundle->flags = flags; | |
93 | ||
94 | list_init(&bundle->msg_list); | |
95 | ||
96 | return bundle; | |
97 | } | |
98 | ||
99 | static void | |
100 | ofp_bundle_remove(struct ofconn *ofconn, struct ofp_bundle *item) | |
101 | { | |
102 | struct bundle_message *msg, *next; | |
103 | struct hmap *bundles; | |
104 | ||
105 | LIST_FOR_EACH_SAFE (msg, next, node, &item->msg_list) { | |
106 | list_remove(&msg->node); | |
107 | free(msg->msg); | |
108 | free(msg); | |
109 | } | |
110 | ||
111 | bundles = ofconn_get_bundles(ofconn); | |
112 | hmap_remove(bundles, &item->node); | |
113 | ||
114 | free(item); | |
115 | } | |
116 | ||
117 | void | |
118 | ofp_bundle_remove_all(struct ofconn *ofconn) | |
119 | { | |
120 | struct ofp_bundle *b, *next; | |
121 | struct hmap *bundles; | |
122 | ||
123 | bundles = ofconn_get_bundles(ofconn); | |
124 | ||
125 | HMAP_FOR_EACH_SAFE (b, next, node, bundles) { | |
126 | ofp_bundle_remove(ofconn, b); | |
127 | } | |
128 | } | |
129 | ||
130 | enum ofperr | |
131 | ofp_bundle_open(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
132 | { | |
133 | struct hmap *bundles; | |
134 | struct ofp_bundle *bundle; | |
135 | ||
136 | bundles = ofconn_get_bundles(ofconn); | |
137 | bundle = ofp_bundle_find(bundles, id); | |
138 | ||
139 | if (bundle) { | |
140 | VLOG_INFO("Bundle %x already exists.", id); | |
141 | ofp_bundle_remove(ofconn, bundle); | |
142 | ||
143 | return OFPERR_OFPBFC_BAD_ID; | |
144 | } | |
145 | ||
645b8934 | 146 | /* XXX: Check the limit of open bundles */ |
777af88d AC |
147 | |
148 | bundle = ofp_bundle_create(id, flags); | |
149 | bundle->state = BS_OPEN; | |
150 | ||
151 | bundles = ofconn_get_bundles(ofconn); | |
152 | hmap_insert(bundles, &bundle->node, bundle_hash(id)); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | enum ofperr | |
158 | ofp_bundle_close(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
159 | { | |
160 | struct hmap *bundles; | |
161 | struct ofp_bundle *bundle; | |
162 | ||
163 | bundles = ofconn_get_bundles(ofconn); | |
164 | bundle = ofp_bundle_find(bundles, id); | |
165 | ||
166 | if (!bundle) { | |
167 | return OFPERR_OFPBFC_BAD_ID; | |
168 | } | |
169 | ||
170 | if (bundle->state == BS_CLOSED) { | |
171 | ofp_bundle_remove(ofconn, bundle); | |
172 | return OFPERR_OFPBFC_BUNDLE_CLOSED; | |
173 | } | |
174 | ||
175 | if (bundle->flags != flags) { | |
176 | ofp_bundle_remove(ofconn, bundle); | |
177 | return OFPERR_OFPBFC_BAD_FLAGS; | |
178 | } | |
179 | ||
180 | bundle->state = BS_CLOSED; | |
181 | return 0; | |
182 | } | |
183 | ||
184 | enum ofperr | |
185 | ofp_bundle_commit(struct ofconn *ofconn, uint32_t id, uint16_t flags) | |
186 | { | |
187 | struct hmap *bundles; | |
188 | struct ofp_bundle *bundle; | |
189 | ||
190 | bundles = ofconn_get_bundles(ofconn); | |
191 | bundle = ofp_bundle_find(bundles, id); | |
192 | ||
193 | if (!bundle) { | |
194 | return OFPERR_OFPBFC_BAD_ID; | |
195 | } | |
196 | if (bundle->flags != flags) { | |
197 | ofp_bundle_remove(ofconn, bundle); | |
198 | return OFPERR_OFPBFC_BAD_FLAGS; | |
199 | } | |
200 | ||
645b8934 | 201 | /* XXX: actual commit */ |
777af88d AC |
202 | |
203 | return OFPERR_OFPBFC_MSG_UNSUP; | |
204 | } | |
205 | ||
206 | enum ofperr | |
207 | ofp_bundle_discard(struct ofconn *ofconn, uint32_t id) | |
208 | { | |
209 | struct hmap *bundles; | |
210 | struct ofp_bundle *bundle; | |
211 | ||
212 | bundles = ofconn_get_bundles(ofconn); | |
213 | bundle = ofp_bundle_find(bundles, id); | |
214 | ||
215 | if (!bundle) { | |
216 | return OFPERR_OFPBFC_BAD_ID; | |
217 | } | |
218 | ||
219 | ofp_bundle_remove(ofconn, bundle); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | enum ofperr | |
225 | ofp_bundle_add_message(struct ofconn *ofconn, struct ofputil_bundle_add_msg *badd) | |
226 | { | |
227 | struct hmap *bundles; | |
228 | struct ofp_bundle *bundle; | |
229 | struct bundle_message *bmsg; | |
230 | ||
231 | bundles = ofconn_get_bundles(ofconn); | |
232 | bundle = ofp_bundle_find(bundles, badd->bundle_id); | |
233 | ||
234 | if (!bundle) { | |
235 | bundle = ofp_bundle_create(badd->bundle_id, badd->flags); | |
236 | bundle->state = BS_OPEN; | |
237 | ||
238 | bundles = ofconn_get_bundles(ofconn); | |
239 | hmap_insert(bundles, &bundle->node, bundle_hash(badd->bundle_id)); | |
240 | } | |
241 | ||
242 | if (bundle->state == BS_CLOSED) { | |
243 | ofp_bundle_remove(ofconn, bundle); | |
244 | return OFPERR_OFPBFC_BUNDLE_CLOSED; | |
245 | } | |
246 | ||
247 | bmsg = xmalloc(sizeof *bmsg); | |
248 | bmsg->msg = xmemdup(badd->msg, ntohs(badd->msg->length)); | |
249 | list_push_back(&bundle->msg_list, &bmsg->node); | |
250 | return 0; | |
251 | } |