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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Gaëtan Rivet
*/
#include <string.h>
#include <cmdline_parse_etheraddr.h>
#include <rte_class.h>
#include <rte_compat.h>
#include <rte_errno.h>
#include <rte_kvargs.h>
#include <rte_log.h>
#include "rte_ethdev.h"
#include "rte_ethdev_core.h"
#include "rte_ethdev_driver.h"
#include "ethdev_private.h"
enum eth_params {
RTE_ETH_PARAM_MAC,
RTE_ETH_PARAM_REPRESENTOR,
RTE_ETH_PARAM_MAX,
};
static const char * const eth_params_keys[] = {
[RTE_ETH_PARAM_MAC] = "mac",
[RTE_ETH_PARAM_REPRESENTOR] = "representor",
[RTE_ETH_PARAM_MAX] = NULL,
};
struct eth_dev_match_arg {
struct rte_device *device;
struct rte_kvargs *kvlist;
};
#define eth_dev_match_arg(d, k) \
(&(const struct eth_dev_match_arg) { \
.device = (d), \
.kvlist = (k), \
})
static int
eth_mac_cmp(const char *key __rte_unused,
const char *value, void *opaque)
{
int ret;
struct ether_addr mac;
const struct rte_eth_dev_data *data = opaque;
struct rte_eth_dev_info dev_info;
uint32_t index;
/* Parse devargs MAC address. */
/*
* cannot use ether_aton_r(value, &mac)
* because of include conflict with rte_ether.h
*/
ret = cmdline_parse_etheraddr(NULL, value, &mac, sizeof(mac));
if (ret < 0)
return -1; /* invalid devargs value */
/* Return 0 if devargs MAC is matching one of the device MACs. */
rte_eth_dev_info_get(data->port_id, &dev_info);
for (index = 0; index < dev_info.max_mac_addrs; index++)
if (is_same_ether_addr(&mac, &data->mac_addrs[index]))
return 0;
return -1; /* no match */
}
static int
eth_representor_cmp(const char *key __rte_unused,
const char *value, void *opaque)
{
int ret;
char *values;
const struct rte_eth_dev_data *data = opaque;
struct rte_eth_devargs representors;
uint16_t index;
if ((data->dev_flags & RTE_ETH_DEV_REPRESENTOR) == 0)
return -1; /* not a representor port */
/* Parse devargs representor values. */
values = strdup(value);
if (values == NULL)
return -1;
memset(&representors, 0, sizeof(representors));
ret = rte_eth_devargs_parse_list(values,
rte_eth_devargs_parse_representor_ports,
&representors);
free(values);
if (ret != 0)
return -1; /* invalid devargs value */
/* Return 0 if representor id is matching one of the values. */
for (index = 0; index < representors.nb_representor_ports; index++)
if (data->representor_id ==
representors.representor_ports[index])
return 0;
return -1; /* no match */
}
static int
eth_dev_match(const struct rte_eth_dev *edev,
const void *_arg)
{
int ret;
const struct eth_dev_match_arg *arg = _arg;
const struct rte_kvargs *kvlist = arg->kvlist;
unsigned int pair;
if (edev->state == RTE_ETH_DEV_UNUSED)
return -1;
if (arg->device != NULL && arg->device != edev->device)
return -1;
ret = rte_kvargs_process(kvlist,
eth_params_keys[RTE_ETH_PARAM_MAC],
eth_mac_cmp, edev->data);
if (ret != 0)
return -1;
ret = rte_kvargs_process(kvlist,
eth_params_keys[RTE_ETH_PARAM_REPRESENTOR],
eth_representor_cmp, edev->data);
if (ret != 0)
return -1;
/* search for representor key */
for (pair = 0; pair < kvlist->count; pair++) {
ret = strcmp(kvlist->pairs[pair].key,
eth_params_keys[RTE_ETH_PARAM_REPRESENTOR]);
if (ret == 0)
break; /* there is a representor key */
}
/* if no representor key, default is to not match representor ports */
if (ret != 0)
if ((edev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR) != 0)
return -1; /* do not match any representor */
return 0;
}
static void *
eth_dev_iterate(const void *start,
const char *str,
const struct rte_dev_iterator *it)
{
struct rte_kvargs *kvargs = NULL;
struct rte_eth_dev *edev = NULL;
const char * const *valid_keys = NULL;
if (str != NULL) {
if (str[0] == '+') /* no validation of keys */
str++;
else
valid_keys = eth_params_keys;
kvargs = rte_kvargs_parse(str, valid_keys);
if (kvargs == NULL) {
RTE_LOG(ERR, EAL, "cannot parse argument list\n");
rte_errno = EINVAL;
return NULL;
}
}
edev = eth_find_device(start, eth_dev_match,
eth_dev_match_arg(it->device, kvargs));
rte_kvargs_free(kvargs);
return edev;
}
static struct rte_class rte_class_eth = {
.dev_iterate = eth_dev_iterate,
};
RTE_REGISTER_CLASS(eth, rte_class_eth);
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