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examples/l2fwd-crypto: parse key parameters

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Implement key parsing functionality, so user can provide
auth and cipher keys, plus IV, from the command line.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Tested-by: Min Cao <min.cao@intel.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
This commit is contained in:
Pablo de Lara 2016-03-11 00:02:48 +00:00 committed by Thomas Monjalon
parent ef120cbc80
commit 1df9c0109f
1 changed files with 78 additions and 45 deletions
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121
examples/l2fwd-crypto/main.c
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@ -76,6 +76,7 @@
#define NB_MBUF 8192
#define MAX_KEY_SIZE 128
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
@ -136,13 +137,13 @@ struct l2fwd_crypto_options {
enum l2fwd_crypto_xform_chain xform_chain;
struct rte_crypto_sym_xform cipher_xform;
uint8_t ckey_data[32];
unsigned ckey_param;
struct l2fwd_key iv_key;
uint8_t ivkey_data[16];
struct l2fwd_key iv;
unsigned iv_param;
struct rte_crypto_sym_xform auth_xform;
uint8_t akey_data[128];
uint8_t akey_param;
};
/** l2fwd crypto lcore params */
@ -152,7 +153,7 @@ struct l2fwd_crypto_params {
unsigned digest_length;
unsigned block_size;
struct l2fwd_key iv_key;
struct l2fwd_key iv;
struct rte_cryptodev_sym_session *session;
};
@ -172,6 +173,8 @@ struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
static const struct rte_eth_conf port_conf = {
.rxmode = {
.mq_mode = ETH_MQ_RX_NONE,
.max_rx_pkt_len = ETHER_MAX_LEN,
.split_hdr_size = 0,
.header_split = 0, /**< Header Split disabled */
.hw_ip_checksum = 0, /**< IP checksum offload disabled */
@ -397,9 +400,9 @@ l2fwd_simple_crypto_enqueue(struct rte_mbuf *m,
op->sym->auth.data.length = data_len;
op->sym->cipher.iv.data = cparams->iv_key.data;
op->sym->cipher.iv.phys_addr = cparams->iv_key.phys_addr;
op->sym->cipher.iv.length = cparams->iv_key.length;
op->sym->cipher.iv.data = cparams->iv.data;
op->sym->cipher.iv.phys_addr = cparams->iv.phys_addr;
op->sym->cipher.iv.length = cparams->iv.length;
op->sym->cipher.data.offset = ipdata_offset;
op->sym->cipher.data.length = data_len;
@ -546,13 +549,12 @@ l2fwd_main_loop(struct l2fwd_crypto_options *options)
port_cparams[i].block_size = 64;
port_cparams[i].digest_length = 20;
port_cparams[i].iv_key.data =
(uint8_t *)rte_malloc(NULL, 16, 8);
port_cparams[i].iv_key.length = 16;
port_cparams[i].iv_key.phys_addr = rte_malloc_virt2phy(
(void *)port_cparams[i].iv_key.data);
generate_random_key(port_cparams[i].iv_key.data,
sizeof(cparams[i].iv_key.length));
port_cparams[i].iv.length = 16;
port_cparams[i].iv.data = options->iv.data;
port_cparams[i].iv.phys_addr = options->iv.phys_addr;
if (!options->iv_param)
generate_random_key(options->iv.data,
port_cparams[i].iv.length);
port_cparams[i].session = initialize_crypto_session(options,
port_cparams[i].dev_id);
@ -762,11 +764,24 @@ parse_cipher_op(enum rte_crypto_cipher_operation *op, char *optarg)
/** Parse crypto key command line argument */
static int
parse_key(struct l2fwd_key *key __rte_unused,
unsigned length __rte_unused, char *arg __rte_unused)
parse_key(uint8_t *data, char *input_arg)
{
printf("Currently an unsupported argument!\n");
unsigned byte_count;
char *token;
for (byte_count = 0, token = strtok(input_arg, ":");
(byte_count < MAX_KEY_SIZE) && (token != NULL);
token = strtok(NULL, ":")) {
int number = (int)strtol(token, NULL, 16);
if (errno == EINVAL || errno == ERANGE || number > 0xFF)
return -1;
data[byte_count++] = (uint8_t)number;
}
return 0;
}
/** Parse crypto cipher operation command line argument */
@ -833,18 +848,14 @@ l2fwd_crypto_parse_args_long_options(struct l2fwd_crypto_options *options,
optarg);
else if (strcmp(lgopts[option_index].name, "cipher_key") == 0) {
struct l2fwd_key key = { 0 };
int retval = 0;
options->ckey_param = 1;
return parse_key(options->cipher_xform.cipher.key.data, optarg);
}
retval = parse_key(&key, sizeof(options->ckey_data), optarg);
options->cipher_xform.cipher.key.data = key.data;
options->cipher_xform.cipher.key.length = key.length;
return retval;
} else if (strcmp(lgopts[option_index].name, "iv") == 0)
return parse_key(&options->iv_key, sizeof(options->ivkey_data),
optarg);
else if (strcmp(lgopts[option_index].name, "iv") == 0) {
options->iv_param = 1;
return parse_key(options->iv.data, optarg);
}
/* Authentication options */
else if (strcmp(lgopts[option_index].name, "auth_algo") == 0)
@ -856,16 +867,11 @@ l2fwd_crypto_parse_args_long_options(struct l2fwd_crypto_options *options,
optarg);
else if (strcmp(lgopts[option_index].name, "auth_key") == 0) {
struct l2fwd_key key = { 0 };
int retval = 0;
options->akey_param = 1;
return parse_key(options->auth_xform.auth.key.data, optarg);
}
retval = parse_key(&key, sizeof(options->akey_data), optarg);
options->auth_xform.auth.key.data = key.data;
options->auth_xform.auth.key.length = key.length;
return retval;
} else if (strcmp(lgopts[option_index].name, "sessionless") == 0) {
else if (strcmp(lgopts[option_index].name, "sessionless") == 0) {
options->sessionless = 1;
return 0;
}
@ -962,19 +968,19 @@ l2fwd_crypto_default_options(struct l2fwd_crypto_options *options)
/* Cipher Data */
options->cipher_xform.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
options->cipher_xform.next = NULL;
options->ckey_param = 0;
options->iv_param = 0;
options->cipher_xform.cipher.algo = RTE_CRYPTO_CIPHER_AES_CBC;
options->cipher_xform.cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
generate_random_key(options->ckey_data, sizeof(options->ckey_data));
options->cipher_xform.cipher.key.data = options->ckey_data;
options->cipher_xform.cipher.key.length = 16;
/* Authentication Data */
options->auth_xform.type = RTE_CRYPTO_SYM_XFORM_AUTH;
options->auth_xform.next = NULL;
options->akey_param = 0;
options->auth_xform.auth.algo = RTE_CRYPTO_AUTH_SHA1_HMAC;
options->auth_xform.auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
@ -982,9 +988,6 @@ l2fwd_crypto_default_options(struct l2fwd_crypto_options *options)
options->auth_xform.auth.add_auth_data_length = 0;
options->auth_xform.auth.digest_length = 20;
generate_random_key(options->akey_data, sizeof(options->akey_data));
options->auth_xform.auth.key.data = options->akey_data;
options->auth_xform.auth.key.length = 20;
}
@ -1333,6 +1336,26 @@ initialize_ports(struct l2fwd_crypto_options *options)
return enabled_portcount;
}
static void
reserve_key_memory(struct l2fwd_crypto_options *options)
{
options->cipher_xform.cipher.key.data = rte_malloc("crypto key",
MAX_KEY_SIZE, 0);
if (options->cipher_xform.cipher.key.data == NULL)
rte_exit(EXIT_FAILURE, "Failed to allocate memory for cipher key");
options->auth_xform.auth.key.data = rte_malloc("auth key",
MAX_KEY_SIZE, 0);
if (options->auth_xform.auth.key.data == NULL)
rte_exit(EXIT_FAILURE, "Failed to allocate memory for auth key");
options->iv.data = rte_malloc("iv", MAX_KEY_SIZE, 0);
if (options->iv.data == NULL)
rte_exit(EXIT_FAILURE, "Failed to allocate memory for IV");
options->iv.phys_addr = rte_malloc_virt2phy(options->iv.data);
}
int
main(int argc, char **argv)
{
@ -1350,6 +1373,9 @@ main(int argc, char **argv)
argc -= ret;
argv += ret;
/* reserve memory for Cipher/Auth key and IV */
reserve_key_memory(&options);
/* parse application arguments (after the EAL ones) */
ret = l2fwd_crypto_parse_args(&options, argc, argv);
if (ret < 0)
@ -1463,6 +1489,13 @@ main(int argc, char **argv)
(unsigned)cdev_id);
}
if (!options.akey_param)
generate_random_key(options.auth_xform.auth.key.data,
options.auth_xform.auth.key.length);
if (!options.ckey_param)
generate_random_key(options.cipher_xform.cipher.key.data,
options.cipher_xform.cipher.key.length);
/* launch per-lcore init on every lcore */