1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2018 Intel Corporation
3  */
4 
5 #include <stdlib.h>
6 #include <stdio.h>
7 
8 #include <rte_cryptodev.h>
9 #include <cryptodev_pmd.h>
10 #include <rte_string_fns.h>
11 
12 #include "rte_eth_softnic_internals.h"
13 
14 #define SOFTNIC_CRYPTO_SESSION_CACHE_SIZE 128
15 
16 int
17 softnic_cryptodev_init(struct pmd_internals *p)
18 {
19 	TAILQ_INIT(&p->cryptodev_list);
20 
21 	return 0;
22 }
23 
24 void
25 softnic_cryptodev_free(struct pmd_internals *p)
26 {
27 	for ( ; ; ) {
28 		struct softnic_cryptodev *cryptodev;
29 
30 		cryptodev = TAILQ_FIRST(&p->cryptodev_list);
31 		if (cryptodev == NULL)
32 			break;
33 
34 		TAILQ_REMOVE(&p->cryptodev_list, cryptodev, node);
35 		free(cryptodev);
36 	}
37 }
38 
39 struct softnic_cryptodev *
40 softnic_cryptodev_find(struct pmd_internals *p,
41 	const char *name)
42 {
43 	struct softnic_cryptodev *cryptodev;
44 
45 	if (name == NULL)
46 		return NULL;
47 
48 	TAILQ_FOREACH(cryptodev, &p->cryptodev_list, node)
49 		if (strcmp(cryptodev->name, name) == 0)
50 			return cryptodev;
51 
52 	return NULL;
53 }
54 
55 struct softnic_cryptodev *
56 softnic_cryptodev_create(struct pmd_internals *p,
57 	const char *name,
58 	struct softnic_cryptodev_params *params)
59 {
60 	struct rte_cryptodev_info dev_info;
61 	struct rte_cryptodev_config dev_conf;
62 	struct rte_cryptodev_qp_conf queue_conf;
63 	struct softnic_cryptodev *cryptodev;
64 	uint32_t dev_id, i;
65 	uint32_t socket_id;
66 	uint32_t cache_size;
67 	char mp_name[NAME_SIZE];
68 	int status;
69 
70 	/* Check input params */
71 	if ((name == NULL) ||
72 		softnic_cryptodev_find(p, name) ||
73 		(params->n_queues == 0) ||
74 		(params->queue_size == 0) ||
75 		(params->session_pool_size == 0))
76 		return NULL;
77 
78 	if (params->dev_name) {
79 		status = rte_cryptodev_get_dev_id(params->dev_name);
80 		if (status == -1)
81 			return NULL;
82 
83 		dev_id = (uint32_t)status;
84 	} else {
85 		if (rte_cryptodev_is_valid_dev(params->dev_id) == 0)
86 			return NULL;
87 
88 		dev_id = params->dev_id;
89 	}
90 
91 	cache_size = (params->session_pool_size / 2 <
92 			SOFTNIC_CRYPTO_SESSION_CACHE_SIZE) ?
93 					(params->session_pool_size / 2) :
94 					SOFTNIC_CRYPTO_SESSION_CACHE_SIZE;
95 
96 	socket_id = rte_cryptodev_socket_id(dev_id);
97 	rte_cryptodev_info_get(dev_id, &dev_info);
98 
99 	if (dev_info.max_nb_queue_pairs < params->n_queues)
100 		return NULL;
101 	if (dev_info.feature_flags & RTE_CRYPTODEV_FF_HW_ACCELERATED)
102 		return NULL;
103 
104 	dev_conf.socket_id = socket_id;
105 	dev_conf.nb_queue_pairs = params->n_queues;
106 
107 	status = rte_cryptodev_configure(dev_id, &dev_conf);
108 	if (status < 0)
109 		return NULL;
110 
111 	queue_conf.nb_descriptors = params->queue_size;
112 	for (i = 0; i < params->n_queues; i++) {
113 		status = rte_cryptodev_queue_pair_setup(dev_id, i,
114 				&queue_conf, socket_id);
115 		if (status < 0)
116 			return NULL;
117 	}
118 
119 	if (rte_cryptodev_start(dev_id) < 0)
120 		return NULL;
121 
122 	cryptodev = calloc(1, sizeof(struct softnic_cryptodev));
123 	if (cryptodev == NULL) {
124 		rte_cryptodev_stop(dev_id);
125 		return NULL;
126 	}
127 
128 	strlcpy(cryptodev->name, name, sizeof(cryptodev->name));
129 	cryptodev->dev_id = dev_id;
130 	cryptodev->n_queues = params->n_queues;
131 
132 	snprintf(mp_name, NAME_SIZE, "%s_mp%u", name, dev_id);
133 	cryptodev->mp_create = rte_cryptodev_sym_session_pool_create(mp_name,
134 			params->session_pool_size,
135 			0,
136 			cache_size,
137 			0,
138 			socket_id);
139 	if (!cryptodev->mp_create)
140 		goto error_exit;
141 
142 	snprintf(mp_name, NAME_SIZE, "%s_priv_mp%u", name, dev_id);
143 	cryptodev->mp_init = rte_mempool_create(mp_name,
144 			params->session_pool_size,
145 			rte_cryptodev_sym_get_private_session_size(dev_id),
146 			cache_size,
147 			0,
148 			NULL,
149 			NULL,
150 			NULL,
151 			NULL,
152 			socket_id,
153 			0);
154 	if (!cryptodev->mp_init)
155 		goto error_exit;
156 
157 	TAILQ_INSERT_TAIL(&p->cryptodev_list, cryptodev, node);
158 
159 	return cryptodev;
160 
161 error_exit:
162 	rte_mempool_free(cryptodev->mp_create);
163 	rte_mempool_free(cryptodev->mp_init);
164 
165 	free(cryptodev);
166 
167 	return NULL;
168 }
169