FD.io VPP  v19.04.4-rc0-5-ge88582fac
Vector Packet Processing
crypto.c
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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 <stdbool.h>
17 #include <vlib/vlib.h>
18 #include <vnet/crypto/crypto.h>
19 
21 
24  vnet_crypto_main_t * cm,
26  vnet_crypto_op_t * ops[], u32 n_ops)
27 {
28  if (n_ops == 0)
29  return 0;
30 
31  if (cm->ops_handlers[opt] == 0)
32  {
33  while (n_ops--)
34  {
35  ops[0]->status = VNET_CRYPTO_OP_STATUS_FAIL_NO_HANDLER;
36  ops++;
37  }
38  return 0;
39  }
40 
41  return (cm->ops_handlers[opt]) (vm, ops, n_ops);
42 }
43 
44 
45 u32
47 {
49  const int op_q_size = VLIB_FRAME_SIZE;
50  vnet_crypto_op_t *op_queue[op_q_size];
51  vnet_crypto_op_id_t opt, current_op_type = ~0;
52  u32 n_op_queue = 0;
53  u32 rv = 0, i;
54 
55  ASSERT (n_ops >= 1);
56 
57  for (i = 0; i < n_ops; i++)
58  {
59  opt = ops[i].op;
60 
61  if (current_op_type != opt || n_op_queue >= op_q_size)
62  {
63  rv += vnet_crypto_process_ops_call_handler (vm, cm, current_op_type,
64  op_queue, n_op_queue);
65  n_op_queue = 0;
66  current_op_type = opt;
67  }
68 
69  op_queue[n_op_queue++] = &ops[i];
70  }
71 
72  rv += vnet_crypto_process_ops_call_handler (vm, cm, current_op_type,
73  op_queue, n_op_queue);
74  return rv;
75 }
76 
77 u32
79  char *desc)
80 {
83 
84  vec_add2 (cm->engines, p, 1);
85  p->name = name;
86  p->desc = desc;
87  p->priority = prio;
88 
89  hash_set_mem (cm->engine_index_by_name, p->name, p - cm->engines);
90 
91  return p - cm->engines;
92 }
93 
94 int
95 vnet_crypto_set_handler (char *alg_name, char *engine)
96 {
97  uword *p;
101  int i;
102 
103  p = hash_get_mem (cm->alg_index_by_name, alg_name);
104  if (!p)
105  return -1;
106 
107  ad = vec_elt_at_index (cm->algs, p[0]);
108 
109  p = hash_get_mem (cm->engine_index_by_name, engine);
110  if (!p)
111  return -1;
112 
113  ce = vec_elt_at_index (cm->engines, p[0]);
114 
115  for (i = 0; i < VNET_CRYPTO_OP_N_TYPES; i++)
116  {
118  vnet_crypto_op_id_t id = ad->op_by_type[i];
119  if (id == 0)
120  continue;
121  od = vec_elt_at_index (cm->opt_data, id);
122  if (ce->ops_handlers[id])
123  {
124  od->active_engine_index = p[0];
125  cm->ops_handlers[id] = ce->ops_handlers[id];
126  }
127  }
128 
129  return 0;
130 }
131 
132 vlib_error_t *
136 {
138  vnet_crypto_engine_t *ae, *e = vec_elt_at_index (cm->engines, engine_index);
139  vnet_crypto_op_data_t *otd = cm->opt_data + opt;
142  e->ops_handlers[opt] = fn;
143 
144  if (otd->active_engine_index == ~0)
145  {
146  otd->active_engine_index = engine_index;
147  cm->ops_handlers[opt] = fn;
148  return 0;
149  }
151  if (ae->priority < e->priority)
152  {
153  otd->active_engine_index = engine_index;
154  cm->ops_handlers[opt] = fn;
155  }
156 
157  return 0;
158 }
159 
160 static void
162  vnet_crypto_op_id_t did, char *name, u8 is_aead)
163 {
164  vnet_crypto_op_type_t eopt, dopt;
166  cm->algs[alg].name = name;
167  cm->opt_data[eid].alg = cm->opt_data[did].alg = alg;
168  cm->opt_data[eid].active_engine_index = ~0;
169  cm->opt_data[did].active_engine_index = ~0;
170  if (is_aead)
171  {
172  eopt = VNET_CRYPTO_OP_TYPE_AEAD_ENCRYPT;
173  dopt = VNET_CRYPTO_OP_TYPE_AEAD_DECRYPT;
174  }
175  else
176  {
177  eopt = VNET_CRYPTO_OP_TYPE_ENCRYPT;
178  dopt = VNET_CRYPTO_OP_TYPE_DECRYPT;
179  }
180  cm->opt_data[eid].type = eopt;
181  cm->opt_data[did].type = dopt;
182  cm->algs[alg].op_by_type[eopt] = eid;
183  cm->algs[alg].op_by_type[dopt] = did;
184  hash_set_mem (cm->alg_index_by_name, name, alg);
185 }
186 
187 static void
189  vnet_crypto_op_id_t id, char *name)
190 {
192  cm->algs[alg].name = name;
193  cm->algs[alg].op_by_type[VNET_CRYPTO_OP_TYPE_HMAC] = id;
194  cm->opt_data[id].alg = alg;
195  cm->opt_data[id].active_engine_index = ~0;
196  cm->opt_data[id].type = VNET_CRYPTO_OP_TYPE_HMAC;
197  hash_set_mem (cm->alg_index_by_name, name, alg);
198 }
199 
200 clib_error_t *
202 {
205  cm->engine_index_by_name = hash_create_string ( /* size */ 0,
206  sizeof (uword));
207  cm->alg_index_by_name = hash_create_string (0, sizeof (uword));
210 #define _(n, s) \
211  vnet_crypto_init_cipher_data (VNET_CRYPTO_ALG_##n, \
212  VNET_CRYPTO_OP_##n##_ENC, \
213  VNET_CRYPTO_OP_##n##_DEC, s, 0);
215 #undef _
216 #define _(n, s) \
217  vnet_crypto_init_cipher_data (VNET_CRYPTO_ALG_##n, \
218  VNET_CRYPTO_OP_##n##_ENC, \
219  VNET_CRYPTO_OP_##n##_DEC, s, 1);
221 #undef _
222 #define _(n, s) \
223  vnet_crypto_init_hmac_data (VNET_CRYPTO_ALG_HMAC_##n, \
224  VNET_CRYPTO_OP_##n##_HMAC, "hmac-" s);
226 #undef _
227  return 0;
228 }
229 
231 
232 /*
233  * fd.io coding-style-patch-verification: ON
234  *
235  * Local Variables:
236  * eval: (c-set-style "gnu")
237  * End:
238  */
u32 vnet_crypto_process_ops(vlib_main_t *vm, vnet_crypto_op_t ops[], u32 n_ops)
Definition: crypto.c:46
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
vnet_crypto_engine_t * engines
Definition: crypto.h:167
vnet_crypto_thread_t * threads
Definition: crypto.h:164
uword * alg_index_by_name
Definition: crypto.h:169
vnet_crypto_op_data_t opt_data[VNET_CRYPTO_N_OP_IDS]
Definition: crypto.h:166
vnet_crypto_alg_data_t * algs
Definition: crypto.h:163
vnet_crypto_op_id_t op_by_type[VNET_CRYPTO_OP_N_TYPES]
Definition: crypto.h:104
u16 vlib_error_t
Definition: error.h:43
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:560
int i
#define hash_set_mem(h, key, value)
Definition: hash.h:275
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:450
static void vnet_crypto_init_hmac_data(vnet_crypto_alg_t alg, vnet_crypto_op_id_t id, char *name)
Definition: crypto.c:188
unsigned char u8
Definition: types.h:56
vnet_crypto_op_type_t
Definition: crypto.h:51
#define static_always_inline
Definition: clib.h:99
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
#define foreach_crypto_aead_alg
Definition: crypto.h:30
vnet_crypto_alg_t alg
Definition: crypto.h:131
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
#define foreach_crypto_hmac_alg
Definition: crypto.h:35
unsigned int u32
Definition: types.h:88
#define VLIB_FRAME_SIZE
Definition: node.h:376
vnet_crypto_op_id_t op
Definition: crypto.h:110
vnet_crypto_alg_t
Definition: crypto.h:75
#define hash_create_string(elts, value_bytes)
Definition: hash.h:690
int vnet_crypto_set_handler(char *alg_name, char *engine)
Definition: crypto.c:95
vlib_error_t * vnet_crypto_register_ops_handler(vlib_main_t *vm, u32 engine_index, vnet_crypto_op_id_t opt, vnet_crypto_ops_handler_t *fn)
Definition: crypto.c:133
u8 name[64]
Definition: memclnt.api:152
vlib_main_t * vm
Definition: buffer.c:312
u32() vnet_crypto_ops_handler_t(vlib_main_t *vm, vnet_crypto_op_t *ops[], u32 n_ops)
Definition: crypto.h:141
#define ASSERT(truth)
uword * engine_index_by_name
Definition: crypto.h:168
static void vnet_crypto_init_cipher_data(vnet_crypto_alg_t alg, vnet_crypto_op_id_t eid, vnet_crypto_op_id_t did, char *name, u8 is_aead)
Definition: crypto.c:161
u64 uword
Definition: types.h:112
vnet_crypto_op_type_t type
Definition: crypto.h:130
static_always_inline u32 vnet_crypto_process_ops_call_handler(vlib_main_t *vm, vnet_crypto_main_t *cm, vnet_crypto_op_id_t opt, vnet_crypto_op_t *ops[], u32 n_ops)
Definition: crypto.c:23
#define hash_get_mem(h, key)
Definition: hash.h:269
vnet_crypto_ops_handler_t * ops_handlers[VNET_CRYPTO_N_OP_IDS]
Definition: crypto.h:158
vnet_crypto_op_status_t status
Definition: crypto.h:111
vnet_crypto_op_id_t
Definition: crypto.h:87
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:32
u32 id
Definition: udp.api:45
vnet_crypto_ops_handler_t ** ops_handlers
Definition: crypto.h:165
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
u32 vnet_crypto_register_engine(vlib_main_t *vm, char *name, int prio, char *desc)
Definition: crypto.c:78
vnet_crypto_main_t crypto_main
Definition: crypto.c:20
clib_error_t * vnet_crypto_init(vlib_main_t *vm)
Definition: crypto.c:201
#define foreach_crypto_cipher_alg
Definition: crypto.h:23