[dpdk-dev] [PATCH v9 04/14] eal/pci, ethdev: Remove assumption that port will not be detached
Tetsuya Mukawa
mukawa at igel.co.jp
Thu Feb 19 03:49:35 CET 2015
To remove assumption, do like followings.
This patch adds "RTE_PCI_DRV_DETACHABLE" to drv_flags of rte_pci_driver
structure. The flags indicate the driver can detach devices at runtime.
Also, remove assumption that port will not be detached.
To remove the assumption.
- Add 'attached' member to rte_eth_dev structure.
This member is used for indicating the port is attached, or not.
DEV_ATTACHED indicates a port is attached.
DEV_DETACHED indicates a port is detached.
- Add rte_eth_dev_allocate_new_port().
This function is used for allocating new port.
v9:
- DEV_INVALID/VALID are removed.
- DEV_DISCONNECTED is replaced by DEV_DETACHED.
- DEV_CONNECTED is replaced by DEV_ATTACHED.
- rte_eth_dev_allocate_new_port() is renamed to
rte_eth_dev_find_free_port().
- rte_eth_dev_validate_port() is renamed to rte_eth_dev_is_valid_port().
- rte_eth_dev_is_valid_port() is changed not to handle log toggle.
- Fix commit log to describe DEV_ATACHED and DEV_DETACHED.
(Thanks to Thomas Monjalon)
v8:
- NONE_TRACE is changed to NO_TRACE.
(Thanks to Iremonger, Bernard)
v5:
- Change parameters of rte_eth_dev_validate_port() to cleanup code.
v4:
- Use braces with 'for' loop.
- Fix indent of 'if' statement.
Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
---
lib/librte_eal/common/include/rte_pci.h | 2 +
lib/librte_ether/rte_ethdev.c | 273 ++++++++++++++++++++------------
lib/librte_ether/rte_ethdev.h | 5 +
3 files changed, 177 insertions(+), 103 deletions(-)
diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 7b48b55..7f2d699 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -207,6 +207,8 @@ struct rte_pci_driver {
#define RTE_PCI_DRV_FORCE_UNBIND 0x0004
/** Device driver supports link state interrupt */
#define RTE_PCI_DRV_INTR_LSC 0x0008
+/** Device driver supports detaching capability */
+#define RTE_PCI_DRV_DETACHABLE 0x0010
/**< Internal use only - Macro used by pci addr parsing functions **/
#define GET_PCIADDR_FIELD(in, fd, lim, dlm) \
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index ea3a1fb..56797a5 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -175,6 +175,11 @@ enum {
STAT_QMAP_RX
};
+enum {
+ DEV_DETACHED = 0,
+ DEV_ATTACHED
+};
+
static inline void
rte_eth_dev_data_alloc(void)
{
@@ -201,19 +206,34 @@ rte_eth_dev_allocated(const char *name)
{
unsigned i;
- for (i = 0; i < nb_ports; i++) {
- if (strcmp(rte_eth_devices[i].data->name, name) == 0)
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if ((rte_eth_devices[i].attached == DEV_ATTACHED) &&
+ strcmp(rte_eth_devices[i].data->name, name) == 0)
return &rte_eth_devices[i];
}
return NULL;
}
+static uint8_t
+rte_eth_dev_find_free_port(void)
+{
+ unsigned i;
+
+ for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+ if (rte_eth_devices[i].attached == DEV_DETACHED)
+ return i;
+ }
+ return RTE_MAX_ETHPORTS;
+}
+
struct rte_eth_dev *
rte_eth_dev_allocate(const char *name)
{
+ uint8_t port_id;
struct rte_eth_dev *eth_dev;
- if (nb_ports == RTE_MAX_ETHPORTS) {
+ port_id = rte_eth_dev_find_free_port();
+ if (port_id == RTE_MAX_ETHPORTS) {
PMD_DEBUG_TRACE("Reached maximum number of Ethernet ports\n");
return NULL;
}
@@ -226,10 +246,12 @@ rte_eth_dev_allocate(const char *name)
return NULL;
}
- eth_dev = &rte_eth_devices[nb_ports];
- eth_dev->data = &rte_eth_dev_data[nb_ports];
+ eth_dev = &rte_eth_devices[port_id];
+ eth_dev->data = &rte_eth_dev_data[port_id];
snprintf(eth_dev->data->name, sizeof(eth_dev->data->name), "%s", name);
- eth_dev->data->port_id = nb_ports++;
+ eth_dev->data->port_id = port_id;
+ eth_dev->attached = DEV_ATTACHED;
+ nb_ports++;
return eth_dev;
}
@@ -283,6 +305,7 @@ rte_eth_dev_init(struct rte_pci_driver *pci_drv,
(unsigned) pci_dev->id.device_id);
if (rte_eal_process_type() == RTE_PROC_PRIMARY)
rte_free(eth_dev->data->dev_private);
+ eth_dev->attached = DEV_DETACHED;
nb_ports--;
return diag;
}
@@ -308,10 +331,20 @@ rte_eth_driver_register(struct eth_driver *eth_drv)
rte_eal_pci_register(ð_drv->pci_drv);
}
+static int
+rte_eth_dev_is_valid_port(uint8_t port_id)
+{
+ if (port_id >= RTE_MAX_ETHPORTS ||
+ rte_eth_devices[port_id].attached != DEV_ATTACHED)
+ return 0;
+ else
+ return 1;
+}
+
int
rte_eth_dev_socket_id(uint8_t port_id)
{
- if (port_id >= nb_ports)
+ if (!rte_eth_dev_is_valid_port(port_id))
return -1;
return rte_eth_devices[port_id].pci_dev->numa_node;
}
@@ -369,7 +402,7 @@ rte_eth_dev_rx_queue_start(uint8_t port_id, uint16_t rx_queue_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
@@ -395,7 +428,7 @@ rte_eth_dev_rx_queue_stop(uint8_t port_id, uint16_t rx_queue_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
@@ -421,7 +454,7 @@ rte_eth_dev_tx_queue_start(uint8_t port_id, uint16_t tx_queue_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
@@ -447,7 +480,7 @@ rte_eth_dev_tx_queue_stop(uint8_t port_id, uint16_t tx_queue_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
@@ -703,10 +736,11 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports || port_id >= RTE_MAX_ETHPORTS) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
@@ -888,10 +922,11 @@ rte_eth_dev_start(uint8_t port_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
- PMD_DEBUG_TRACE("Invalid port_id=%" PRIu8 "\n", port_id);
+ if (!rte_eth_dev_is_valid_port(port_id)) {
+ PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
@@ -923,10 +958,11 @@ rte_eth_dev_stop(uint8_t port_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_RET();
- if (port_id >= nb_ports) {
- PMD_DEBUG_TRACE("Invalid port_id=%" PRIu8 "\n", port_id);
+ if (!rte_eth_dev_is_valid_port(port_id)) {
+ PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
@@ -951,10 +987,11 @@ rte_eth_dev_set_link_up(uint8_t port_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_set_link_up, -ENOTSUP);
@@ -970,10 +1007,11 @@ rte_eth_dev_set_link_down(uint8_t port_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_set_link_down, -ENOTSUP);
@@ -989,7 +1027,7 @@ rte_eth_dev_close(uint8_t port_id)
* in a multi-process setup*/
PROC_PRIMARY_OR_RET();
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
@@ -1017,10 +1055,11 @@ rte_eth_rx_queue_setup(uint8_t port_id, uint16_t rx_queue_id,
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
+
dev = &rte_eth_devices[port_id];
if (rx_queue_id >= dev->data->nb_rx_queues) {
PMD_DEBUG_TRACE("Invalid RX queue_id=%d\n", rx_queue_id);
@@ -1090,10 +1129,11 @@ rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
- if (port_id >= RTE_MAX_ETHPORTS || port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
+
dev = &rte_eth_devices[port_id];
if (tx_queue_id >= dev->data->nb_tx_queues) {
PMD_DEBUG_TRACE("Invalid TX queue_id=%d\n", tx_queue_id);
@@ -1123,10 +1163,11 @@ rte_eth_promiscuous_enable(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->promiscuous_enable);
@@ -1139,10 +1180,11 @@ rte_eth_promiscuous_disable(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->promiscuous_disable);
@@ -1155,7 +1197,7 @@ rte_eth_promiscuous_get(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -1;
}
@@ -1169,10 +1211,11 @@ rte_eth_allmulticast_enable(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->allmulticast_enable);
@@ -1185,10 +1228,11 @@ rte_eth_allmulticast_disable(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->allmulticast_disable);
@@ -1201,7 +1245,7 @@ rte_eth_allmulticast_get(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -1;
}
@@ -1229,10 +1273,11 @@ rte_eth_link_get(uint8_t port_id, struct rte_eth_link *eth_link)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
if (dev->data->dev_conf.intr_conf.lsc != 0)
@@ -1249,10 +1294,11 @@ rte_eth_link_get_nowait(uint8_t port_id, struct rte_eth_link *eth_link)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
if (dev->data->dev_conf.intr_conf.lsc != 0)
@@ -1269,10 +1315,11 @@ rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
memset(stats, 0, sizeof(*stats));
@@ -1286,10 +1333,11 @@ rte_eth_stats_reset(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->stats_reset);
@@ -1307,10 +1355,11 @@ rte_eth_xstats_get(uint8_t port_id, struct rte_eth_xstats *xstats,
uint64_t val;
char *stats_ptr;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -1;
}
+
dev = &rte_eth_devices[port_id];
/* implemented by the driver */
@@ -1376,10 +1425,11 @@ rte_eth_xstats_reset(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
/* implemented by the driver */
@@ -1398,10 +1448,11 @@ set_queue_stats_mapping(uint8_t port_id, uint16_t queue_id, uint8_t stat_idx,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_stats_mapping_set, -ENOTSUP);
@@ -1433,10 +1484,11 @@ rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info *dev_info)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
memset(dev_info, 0, sizeof(struct rte_eth_dev_info));
@@ -1453,10 +1505,11 @@ rte_eth_macaddr_get(uint8_t port_id, struct ether_addr *mac_addr)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return;
}
+
dev = &rte_eth_devices[port_id];
ether_addr_copy(&dev->data->mac_addrs[0], mac_addr);
}
@@ -1467,7 +1520,7 @@ rte_eth_dev_get_mtu(uint8_t port_id, uint16_t *mtu)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1483,7 +1536,7 @@ rte_eth_dev_set_mtu(uint8_t port_id, uint16_t mtu)
int ret;
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1503,10 +1556,11 @@ rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
if (! (dev->data->dev_conf.rxmode.hw_vlan_filter)) {
PMD_DEBUG_TRACE("port %d: vlan-filtering disabled\n", port_id);
@@ -1528,7 +1582,7 @@ rte_eth_dev_set_vlan_strip_on_queue(uint8_t port_id, uint16_t rx_queue_id, int o
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1550,7 +1604,7 @@ rte_eth_dev_set_vlan_ether_type(uint8_t port_id, uint16_t tpid)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1570,7 +1624,7 @@ rte_eth_dev_set_vlan_offload(uint8_t port_id, int offload_mask)
int mask = 0;
int cur, org = 0;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1615,7 +1669,7 @@ rte_eth_dev_get_vlan_offload(uint8_t port_id)
struct rte_eth_dev *dev;
int ret = 0;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1639,10 +1693,11 @@ rte_eth_dev_set_vlan_pvid(uint8_t port_id, uint16_t pvid, int on)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vlan_pvid_set, -ENOTSUP);
(*dev->dev_ops->vlan_pvid_set)(dev, pvid, on);
@@ -1657,7 +1712,7 @@ rte_eth_dev_fdir_add_signature_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1691,7 +1746,7 @@ rte_eth_dev_fdir_update_signature_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1725,7 +1780,7 @@ rte_eth_dev_fdir_remove_signature_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1756,7 +1811,7 @@ rte_eth_dev_fdir_get_infos(uint8_t port_id, struct rte_eth_fdir *fdir)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1781,7 +1836,7 @@ rte_eth_dev_fdir_add_perfect_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1821,7 +1876,7 @@ rte_eth_dev_fdir_update_perfect_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1859,7 +1914,7 @@ rte_eth_dev_fdir_remove_perfect_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1895,7 +1950,7 @@ rte_eth_dev_fdir_set_masks(uint8_t port_id, struct rte_fdir_masks *fdir_mask)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1915,7 +1970,7 @@ rte_eth_dev_flow_ctrl_get(uint8_t port_id, struct rte_eth_fc_conf *fc_conf)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1931,7 +1986,7 @@ rte_eth_dev_flow_ctrl_set(uint8_t port_id, struct rte_eth_fc_conf *fc_conf)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -1951,7 +2006,7 @@ rte_eth_dev_priority_flow_ctrl_set(uint8_t port_id, struct rte_eth_pfc_conf *pfc
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2030,7 +2085,7 @@ rte_eth_dev_rss_reta_update(uint8_t port_id,
struct rte_eth_dev *dev;
int ret;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -2081,10 +2136,11 @@ rte_eth_dev_rss_hash_update(uint8_t port_id, struct rte_eth_rss_conf *rss_conf)
struct rte_eth_dev *dev;
uint16_t rss_hash_protos;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
rss_hash_protos = rss_conf->rss_hf;
if ((rss_hash_protos != 0) &&
((rss_hash_protos & ETH_RSS_PROTO_MASK) == 0)) {
@@ -2103,10 +2159,11 @@ rte_eth_dev_rss_hash_conf_get(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_conf_get, -ENOTSUP);
return (*dev->dev_ops->rss_hash_conf_get)(dev, rss_conf);
@@ -2118,7 +2175,7 @@ rte_eth_dev_udp_tunnel_add(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -2144,10 +2201,11 @@ rte_eth_dev_udp_tunnel_delete(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
+
dev = &rte_eth_devices[port_id];
if (udp_tunnel == NULL) {
@@ -2169,7 +2227,7 @@ rte_eth_led_on(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2184,7 +2242,7 @@ rte_eth_led_off(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2224,10 +2282,11 @@ rte_eth_dev_mac_addr_add(uint8_t port_id, struct ether_addr *addr,
int index;
uint64_t pool_mask;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->mac_addr_add, -ENOTSUP);
@@ -2275,10 +2334,11 @@ rte_eth_dev_mac_addr_remove(uint8_t port_id, struct ether_addr *addr)
struct rte_eth_dev *dev;
int index;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->mac_addr_remove, -ENOTSUP);
@@ -2309,7 +2369,7 @@ rte_eth_dev_set_vf_rxmode(uint8_t port_id, uint16_t vf,
struct rte_eth_dev *dev;
struct rte_eth_dev_info dev_info;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("set VF RX mode:Invalid port_id=%d\n",
port_id);
return (-ENODEV);
@@ -2364,7 +2424,7 @@ rte_eth_dev_uc_hash_table_set(uint8_t port_id, struct ether_addr *addr,
int ret;
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("unicast hash setting:Invalid port_id=%d\n",
port_id);
return (-ENODEV);
@@ -2417,7 +2477,7 @@ rte_eth_dev_uc_all_hash_table_set(uint8_t port_id, uint8_t on)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("unicast hash setting:Invalid port_id=%d\n",
port_id);
return (-ENODEV);
@@ -2436,7 +2496,7 @@ rte_eth_dev_set_vf_rx(uint8_t port_id,uint16_t vf, uint8_t on)
struct rte_eth_dev *dev;
struct rte_eth_dev_info dev_info;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2462,7 +2522,7 @@ rte_eth_dev_set_vf_tx(uint8_t port_id,uint16_t vf, uint8_t on)
struct rte_eth_dev *dev;
struct rte_eth_dev_info dev_info;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("set pool tx:Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2487,7 +2547,7 @@ rte_eth_dev_set_vf_vlan_filter(uint8_t port_id, uint16_t vlan_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("VF VLAN filter:invalid port id=%d\n",
port_id);
return (-ENODEV);
@@ -2518,7 +2578,7 @@ int rte_eth_set_queue_rate_limit(uint8_t port_id, uint16_t queue_idx,
struct rte_eth_dev_info dev_info;
struct rte_eth_link link;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("set queue rate limit:invalid port id=%d\n",
port_id);
return -ENODEV;
@@ -2555,7 +2615,7 @@ int rte_eth_set_vf_rate_limit(uint8_t port_id, uint16_t vf, uint16_t tx_rate,
if (q_msk == 0)
return 0;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("set VF rate limit:invalid port id=%d\n",
port_id);
return -ENODEV;
@@ -2589,7 +2649,7 @@ rte_eth_mirror_rule_set(uint8_t port_id,
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2630,7 +2690,7 @@ rte_eth_mirror_rule_reset(uint8_t port_id, uint8_t rule_id)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2655,10 +2715,11 @@ rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return 0;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
if (queue_id >= dev->data->nb_rx_queues) {
@@ -2675,10 +2736,11 @@ rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return 0;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
@@ -2695,10 +2757,11 @@ rte_eth_rx_queue_count(uint8_t port_id, uint16_t queue_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return 0;
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, 0);
return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
@@ -2709,10 +2772,11 @@ rte_eth_rx_descriptor_done(uint8_t port_id, uint16_t queue_id, uint16_t offset)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
+
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_done, -ENOTSUP);
return (*dev->dev_ops->rx_descriptor_done)( \
@@ -2730,7 +2794,8 @@ rte_eth_dev_callback_register(uint8_t port_id,
if (!cb_fn)
return (-EINVAL);
- if (port_id >= nb_ports) {
+
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
@@ -2770,7 +2835,8 @@ rte_eth_dev_callback_unregister(uint8_t port_id,
if (!cb_fn)
return (-EINVAL);
- if (port_id >= nb_ports) {
+
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-EINVAL);
}
@@ -2830,7 +2896,7 @@ int rte_eth_dev_bypass_init(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2850,7 +2916,7 @@ rte_eth_dev_bypass_state_show(uint8_t port_id, uint32_t *state)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2869,7 +2935,7 @@ rte_eth_dev_bypass_state_set(uint8_t port_id, uint32_t *new_state)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2889,7 +2955,7 @@ rte_eth_dev_bypass_event_show(uint8_t port_id, uint32_t event, uint32_t *state)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2909,7 +2975,7 @@ rte_eth_dev_bypass_event_store(uint8_t port_id, uint32_t event, uint32_t state)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2929,7 +2995,7 @@ rte_eth_dev_wd_timeout_store(uint8_t port_id, uint32_t timeout)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2949,7 +3015,7 @@ rte_eth_dev_bypass_ver_show(uint8_t port_id, uint32_t *ver)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2969,7 +3035,7 @@ rte_eth_dev_bypass_wd_timeout_show(uint8_t port_id, uint32_t *wd_timeout)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -2989,7 +3055,7 @@ rte_eth_dev_bypass_wd_reset(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return (-ENODEV);
}
@@ -3011,7 +3077,7 @@ rte_eth_dev_add_syn_filter(uint8_t port_id,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3026,7 +3092,7 @@ rte_eth_dev_remove_syn_filter(uint8_t port_id)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3045,7 +3111,7 @@ rte_eth_dev_get_syn_filter(uint8_t port_id,
if (filter == NULL || rx_queue == NULL)
return -EINVAL;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3061,10 +3127,11 @@ rte_eth_dev_add_2tuple_filter(uint8_t port_id, uint16_t index,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
+
if (filter->protocol != IPPROTO_TCP &&
filter->tcp_flags != 0){
PMD_DEBUG_TRACE("tcp flags is 0x%x, but the protocol value"
@@ -3083,7 +3150,7 @@ rte_eth_dev_remove_2tuple_filter(uint8_t port_id, uint16_t index)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3102,7 +3169,7 @@ rte_eth_dev_get_2tuple_filter(uint8_t port_id, uint16_t index,
if (filter == NULL || rx_queue == NULL)
return -EINVAL;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3118,7 +3185,7 @@ rte_eth_dev_add_5tuple_filter(uint8_t port_id, uint16_t index,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3141,7 +3208,7 @@ rte_eth_dev_remove_5tuple_filter(uint8_t port_id, uint16_t index)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3160,7 +3227,7 @@ rte_eth_dev_get_5tuple_filter(uint8_t port_id, uint16_t index,
if (filter == NULL || rx_queue == NULL)
return -EINVAL;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3177,7 +3244,7 @@ rte_eth_dev_add_flex_filter(uint8_t port_id, uint16_t index,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3192,7 +3259,7 @@ rte_eth_dev_remove_flex_filter(uint8_t port_id, uint16_t index)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3211,7 +3278,7 @@ rte_eth_dev_get_flex_filter(uint8_t port_id, uint16_t index,
if (filter == NULL || rx_queue == NULL)
return -EINVAL;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3227,7 +3294,7 @@ rte_eth_dev_filter_supported(uint8_t port_id, enum rte_filter_type filter_type)
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
@@ -3244,7 +3311,7 @@ rte_eth_dev_filter_ctrl(uint8_t port_id, enum rte_filter_type filter_type,
{
struct rte_eth_dev *dev;
- if (port_id >= nb_ports) {
+ if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -ENODEV;
}
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 84160c3..768f372 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1540,6 +1540,7 @@ struct rte_eth_dev {
struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */
struct rte_eth_dev_cb_list callbacks; /**< User application callbacks */
+ uint8_t attached; /**< Flag indicating the port is attached */
};
struct rte_eth_dev_sriov {
@@ -1605,6 +1606,10 @@ extern struct rte_eth_dev rte_eth_devices[];
* initialized by the [matching] Ethernet driver during the PCI probing phase.
* All devices whose port identifier is in the range
* [0, rte_eth_dev_count() - 1] can be operated on by network applications.
+ * immediately after invoking rte_eal_init().
+ * If the application unplugs a port using hotplug function, The enabled port
+ * numbers may be noncontiguous. In the case, the applications need to manage
+ * enabled port by themselves.
*
* @return
* - The total number of usable Ethernet devices.
--
1.9.1
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