The hotplug attach/detach features are implemented in EAL layer.
There is a new ethdev iterator to retrieve ports from ethdev layer.
As announced earlier, the (buggy) ethdev functions are now removed.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
};
/* Forward function declarations */
+static void setup_attached_port(portid_t pi);
static void map_port_queue_stats_mapping_registers(portid_t pi,
struct rte_port *port);
static void check_all_ports_link_status(uint32_t port_mask);
attach_port(char *identifier)
{
portid_t pi = 0;
- unsigned int socket_id;
+ struct rte_dev_iterator iterator;
printf("Attaching a new port...\n");
return;
}
- if (rte_eth_dev_attach(identifier, &pi))
+ if (rte_dev_probe(identifier) != 0) {
+ TESTPMD_LOG(ERR, "Failed to attach port %s\n", identifier);
return;
+ }
+
+ RTE_ETH_FOREACH_MATCHING_DEV(pi, identifier, &iterator)
+ setup_attached_port(pi);
+}
+
+static void
+setup_attached_port(portid_t pi)
+{
+ unsigned int socket_id;
socket_id = (unsigned)rte_eth_dev_socket_id(pi);
/* if socket_id is invalid, set to the first available socket. */
void
detach_port(portid_t port_id)
{
- char name[RTE_ETH_NAME_MAX_LEN];
-
- printf("Detaching a port...\n");
+ printf("Removing a device...\n");
if (ports[port_id].port_status != RTE_PORT_CLOSED) {
if (ports[port_id].port_status != RTE_PORT_STOPPED) {
port_flow_flush(port_id);
}
- if (rte_eth_dev_detach(port_id, name)) {
+ if (rte_dev_remove(rte_eth_devices[port_id].device) != 0) {
TESTPMD_LOG(ERR, "Failed to detach port %u\n", port_id);
return;
}
packet_framework
vhost_lib
metrics_lib
- port_hotplug_framework
bpf_lib
source_org
dev_kit_build_system
+++ /dev/null
-.. BSD LICENSE
- Copyright(c) 2015 IGEL Co.,Ltd. All rights reserved.
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- * Neither the name of IGEL Co.,Ltd. nor the names of its
- contributors may be used to endorse or promote products derived
- from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-Port Hotplug Framework
-======================
-
-The Port Hotplug Framework provides DPDK applications with the ability to
-attach and detach ports at runtime. Because the framework depends on PMD
-implementation, the ports that PMDs cannot handle are out of scope of this
-framework. Furthermore, after detaching a port from a DPDK application, the
-framework doesn't provide a way for removing the devices from the system.
-For the ports backed by a physical NIC, the kernel will need to support PCI
-Hotplug feature.
-
-Overview
---------
-
-The basic requirements of the Port Hotplug Framework are:
-
-* DPDK applications that use the Port Hotplug Framework must manage their
- own ports.
-
- The Port Hotplug Framework is implemented to allow DPDK applications to
- manage ports. For example, when DPDK applications call the port attach
- function, the attached port number is returned. DPDK applications can
- also detach the port by port number.
-
-* Kernel support is needed for attaching or detaching physical device
- ports.
-
- To attach new physical device ports, the device will be recognized by
- userspace driver I/O framework in kernel at first. Then DPDK
- applications can call the Port Hotplug functions to attach the ports.
- For detaching, steps are vice versa.
-
-* Before detaching, they must be stopped and closed.
-
- DPDK applications must call "rte_eth_dev_stop()" and
- "rte_eth_dev_close()" APIs before detaching ports. These functions will
- start finalization sequence of the PMDs.
-
-* The framework doesn't affect legacy DPDK applications behavior.
-
- If the Port Hotplug functions aren't called, all legacy DPDK apps can
- still work without modifications.
-
-Port Hotplug API overview
--------------------------
-
-* Attaching a port
-
- "rte_eth_dev_attach()" API attaches a port to DPDK application, and
- returns the attached port number. Before calling the API, the device
- should be recognized by an userspace driver I/O framework. The API
- receives a pci address like "0000:01:00.0" or a virtual device name
- like "net_pcap0,iface=eth0". In the case of virtual device name, the
- format is the same as the general "--vdev" option of DPDK.
-
-* Detaching a port
-
- "rte_eth_dev_detach()" API detaches a port from DPDK application, and
- returns a pci address of the detached device or a virtual device name
- of the device.
-
-Reference
----------
-
- "testpmd" supports the Port Hotplug Framework.
-
-Limitations
------------
-
-* The Port Hotplug APIs are not thread safe.
-
-* The framework can only be enabled with Linux. BSD is not supported.
-
-* Not all PMDs support detaching feature.
- The underlying bus must support hot-unplug. If not supported,
- the function ``rte_eth_dev_detach()`` will return negative ENOTSUP.
Target release for removal of the legacy API will be defined once most
PMDs have switched to rte_flow.
-* ethdev: In v18.11 ``rte_eth_dev_attach()`` and ``rte_eth_dev_detach()``
- will be removed.
- Hotplug functions ``rte_eal_hotplug_add()`` and ``rte_eal_hotplug_remove()``
- should be used instread.
- Function ``rte_eth_dev_get_port_by_name()`` may be used to find
- identifier of the added port.
-
* eal: In v18.11 ``rte_eal_dev_attach()`` and ``rte_eal_dev_detach()``
will be removed.
Hotplug functions ``rte_eal_hotplug_add()`` and ``rte_eal_hotplug_remove()``
functions were deprecated since 17.05 and are replaced by
``rte_mbuf_raw_free()`` and ``rte_pktmbuf_prefree_seg()``.
+* ethdev: The deprecated functions attach/detach were removed in 18.11.
+ ``rte_eth_dev_attach`` can be replaced by ``RTE_ETH_FOREACH_MATCHING_DEV``
+ and ``rte_dev_probe`` or ``rte_eal_hotplug_add``.
+ ``rte_eth_dev_detach`` can be replaced by
+ ``rte_dev_remove`` or ``rte_eal_hotplug_remove``.
+
* ethdev: A call to ``rte_eth_dev_release_port()`` has been added in
``rte_eth_dev_close()``. As a consequence, a closed port is freed
and seen as invalid because of its state ``RTE_ETH_DEV_UNUSED``.
return ret;
}
-/** Called by rte_eth_dev_detach() */
static int
virtio_user_pmd_remove(struct rte_vdev_device *vdev)
{
return ret;
}
-/* attach the new device, then store port_id of the device */
-int
-rte_eth_dev_attach(const char *devargs, uint16_t *port_id)
-{
- int current = rte_eth_dev_count_total();
- struct rte_devargs da;
- int ret = -1;
-
- memset(&da, 0, sizeof(da));
-
- if ((devargs == NULL) || (port_id == NULL)) {
- ret = -EINVAL;
- goto err;
- }
-
- /* parse devargs */
- if (rte_devargs_parse(&da, devargs))
- goto err;
-
- ret = rte_eal_hotplug_add(da.bus->name, da.name, da.args);
- if (ret < 0)
- goto err;
-
- /* no point looking at the port count if no port exists */
- if (!rte_eth_dev_count_total()) {
- RTE_ETHDEV_LOG(ERR, "No port found for device (%s)\n", da.name);
- ret = -1;
- goto err;
- }
-
- /* if nothing happened, there is a bug here, since some driver told us
- * it did attach a device, but did not create a port.
- * FIXME: race condition in case of plug-out of another device
- */
- if (current == rte_eth_dev_count_total()) {
- ret = -1;
- goto err;
- }
-
- *port_id = eth_dev_last_created_port;
- ret = 0;
-
-err:
- free(da.args);
- return ret;
-}
-
-/* detach the device, then store the name of the device */
-int
-rte_eth_dev_detach(uint16_t port_id, char *name __rte_unused)
-{
- struct rte_device *dev;
- struct rte_bus *bus;
- uint32_t dev_flags;
- int ret = -1;
-
- RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
-
- dev_flags = rte_eth_devices[port_id].data->dev_flags;
- if (dev_flags & RTE_ETH_DEV_BONDED_SLAVE) {
- RTE_ETHDEV_LOG(ERR,
- "Port %"PRIu16" is bonded, cannot detach\n", port_id);
- return -ENOTSUP;
- }
-
- dev = rte_eth_devices[port_id].device;
- if (dev == NULL)
- return -EINVAL;
-
- bus = rte_bus_find_by_device(dev);
- if (bus == NULL)
- return -ENOENT;
-
- ret = rte_eal_hotplug_remove(bus->name, dev->name);
- if (ret < 0)
- return ret;
-
- rte_eth_dev_release_port(&rte_eth_devices[port_id]);
- return 0;
-}
-
static int
rte_eth_dev_rx_queue_config(struct rte_eth_dev *dev, uint16_t nb_queues)
{
*/
uint16_t __rte_experimental rte_eth_dev_count_total(void);
-/**
- * Attach a new Ethernet device specified by arguments.
- *
- * @param devargs
- * A pointer to a strings array describing the new device
- * to be attached. The strings should be a pci address like
- * '0000:01:00.0' or virtual device name like 'net_pcap0'.
- * @param port_id
- * A pointer to a port identifier actually attached.
- * @return
- * 0 on success and port_id is filled, negative on error
- */
-__rte_deprecated
-int rte_eth_dev_attach(const char *devargs, uint16_t *port_id);
-
-/**
- * Detach a Ethernet device specified by port identifier.
- * This function must be called when the device is in the
- * closed state.
- *
- * @param port_id
- * The port identifier of the device to detach.
- * @param devname
- * A pointer to a buffer that will be filled with the device name.
- * This buffer must be at least RTE_DEV_NAME_MAX_LEN long.
- * @return
- * 0 on success and devname is filled, negative on error
- */
-__rte_deprecated
-int rte_eth_dev_detach(uint16_t port_id, char *devname);
-
/**
* Convert a numerical speed in Mbps to a bitmap flag that can be used in
* the bitmap link_speeds of the struct rte_eth_conf
rte_eth_allmulticast_get;
rte_eth_dev_allocate;
rte_eth_dev_allocated;
- rte_eth_dev_attach;
rte_eth_dev_callback_register;
rte_eth_dev_callback_unregister;
rte_eth_dev_close;
rte_eth_dev_configure;
rte_eth_dev_count;
rte_eth_dev_default_mac_addr_set;
- rte_eth_dev_detach;
rte_eth_dev_filter_supported;
rte_eth_dev_flow_ctrl_get;
rte_eth_dev_flow_ctrl_set;
git.droids-corp.org / dpdk.git / commitdiff