#include <sys/types.h>
#include <unistd.h>
+#include <rte_malloc.h>
+#include <rte_kvargs.h>
+
+#include "virtio_ethdev.h"
#include "virtio_logs.h"
#include "virtio_pci.h"
#include "virtqueue.h"
+#include "virtio_rxtx.h"
#include "virtio_user/virtio_user_dev.h"
#define virtio_user_get_dev(hw) \
for (i = 0; i < ETHER_ADDR_LEN; ++i)
dev->mac_addr[i] = ((const uint8_t *)src)[i];
else
- PMD_DRV_LOG(ERR, "not supported offset=%" PRIu64 ", len=%d\n",
+ PMD_DRV_LOG(ERR, "not supported offset=%zu, len=%d\n",
offset, length);
}
uint64_t buf = 1;
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
+ if (hw->cvq && (hw->cvq->vq == vq)) {
+ virtio_user_handle_cq(dev, vq->vq_queue_index);
+ return;
+ }
+
if (write(dev->kickfds[vq->vq_queue_index], &buf, sizeof(buf)) < 0)
PMD_DRV_LOG(ERR, "failed to kick backend: %s\n",
strerror(errno));
.del_queue = virtio_user_del_queue,
.notify_queue = virtio_user_notify_queue,
};
+
+static const char *valid_args[] = {
+#define VIRTIO_USER_ARG_QUEUES_NUM "queues"
+ VIRTIO_USER_ARG_QUEUES_NUM,
+#define VIRTIO_USER_ARG_CQ_NUM "cq"
+ VIRTIO_USER_ARG_CQ_NUM,
+#define VIRTIO_USER_ARG_MAC "mac"
+ VIRTIO_USER_ARG_MAC,
+#define VIRTIO_USER_ARG_PATH "path"
+ VIRTIO_USER_ARG_PATH,
+#define VIRTIO_USER_ARG_QUEUE_SIZE "queue_size"
+ VIRTIO_USER_ARG_QUEUE_SIZE,
+ NULL
+};
+
+#define VIRTIO_USER_DEF_CQ_EN 0
+#define VIRTIO_USER_DEF_Q_NUM 1
+#define VIRTIO_USER_DEF_Q_SZ 256
+
+static int
+get_string_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (!value || !extra_args)
+ return -EINVAL;
+
+ *(char **)extra_args = strdup(value);
+
+ return 0;
+}
+
+static int
+get_integer_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (!value || !extra_args)
+ return -EINVAL;
+
+ *(uint64_t *)extra_args = strtoull(value, NULL, 0);
+
+ return 0;
+}
+
+static struct rte_eth_dev *
+virtio_user_eth_dev_alloc(const char *name)
+{
+ struct rte_eth_dev *eth_dev;
+ struct rte_eth_dev_data *data;
+ struct virtio_hw *hw;
+ struct virtio_user_dev *dev;
+
+ eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_VIRTUAL);
+ if (!eth_dev) {
+ PMD_INIT_LOG(ERR, "cannot alloc rte_eth_dev");
+ return NULL;
+ }
+
+ data = eth_dev->data;
+
+ hw = rte_zmalloc(NULL, sizeof(*hw), 0);
+ if (!hw) {
+ PMD_INIT_LOG(ERR, "malloc virtio_hw failed");
+ rte_eth_dev_release_port(eth_dev);
+ return NULL;
+ }
+
+ dev = rte_zmalloc(NULL, sizeof(*dev), 0);
+ if (!dev) {
+ PMD_INIT_LOG(ERR, "malloc virtio_user_dev failed");
+ rte_eth_dev_release_port(eth_dev);
+ rte_free(hw);
+ return NULL;
+ }
+
+ hw->vtpci_ops = &virtio_user_ops;
+ hw->use_msix = 0;
+ hw->modern = 0;
+ hw->virtio_user_dev = dev;
+ data->dev_private = hw;
+ data->numa_node = SOCKET_ID_ANY;
+ data->kdrv = RTE_KDRV_NONE;
+ data->dev_flags = RTE_ETH_DEV_DETACHABLE;
+ eth_dev->pci_dev = NULL;
+ eth_dev->driver = NULL;
+ return eth_dev;
+}
+
+/* Dev initialization routine. Invoked once for each virtio vdev at
+ * EAL init time, see rte_eal_dev_init().
+ * Returns 0 on success.
+ */
+static int
+virtio_user_pmd_devinit(const char *name, const char *params)
+{
+ struct rte_kvargs *kvlist = NULL;
+ struct rte_eth_dev *eth_dev;
+ struct virtio_hw *hw;
+ uint64_t queues = VIRTIO_USER_DEF_Q_NUM;
+ uint64_t cq = VIRTIO_USER_DEF_CQ_EN;
+ uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ;
+ char *path = NULL;
+ char *mac_addr = NULL;
+ int ret = -1;
+
+ if (!params || params[0] == '\0') {
+ PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user",
+ VIRTIO_USER_ARG_QUEUE_SIZE);
+ goto end;
+ }
+
+ kvlist = rte_kvargs_parse(params, valid_args);
+ if (!kvlist) {
+ PMD_INIT_LOG(ERR, "error when parsing param");
+ goto end;
+ }
+
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1) {
+ ret = rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PATH,
+ &get_string_arg, &path);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_PATH);
+ goto end;
+ }
+ } else {
+ PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user\n",
+ VIRTIO_USER_ARG_QUEUE_SIZE);
+ goto end;
+ }
+
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MAC) == 1) {
+ ret = rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MAC,
+ &get_string_arg, &mac_addr);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_MAC);
+ goto end;
+ }
+ }
+
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE) == 1) {
+ ret = rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE,
+ &get_integer_arg, &queue_size);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_QUEUE_SIZE);
+ goto end;
+ }
+ }
+
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUES_NUM) == 1) {
+ ret = rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUES_NUM,
+ &get_integer_arg, &queues);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_QUEUES_NUM);
+ goto end;
+ }
+ }
+
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_CQ_NUM) == 1) {
+ ret = rte_kvargs_process(kvlist, VIRTIO_USER_ARG_CQ_NUM,
+ &get_integer_arg, &cq);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_CQ_NUM);
+ goto end;
+ }
+ } else if (queues > 1) {
+ cq = 1;
+ }
+
+ if (queues > 1 && cq == 0) {
+ PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
+ goto end;
+ }
+
+ eth_dev = virtio_user_eth_dev_alloc(name);
+ if (!eth_dev) {
+ PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
+ goto end;
+ }
+
+ hw = eth_dev->data->dev_private;
+ if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
+ queue_size, mac_addr) < 0)
+ goto end;
+
+ /* previously called by rte_eal_pci_probe() for physical dev */
+ if (eth_virtio_dev_init(eth_dev) < 0) {
+ PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
+ goto end;
+ }
+ ret = 0;
+
+end:
+ if (kvlist)
+ rte_kvargs_free(kvlist);
+ if (path)
+ free(path);
+ if (mac_addr)
+ free(mac_addr);
+ return ret;
+}
+
+/** Called by rte_eth_dev_detach() */
+static int
+virtio_user_pmd_devuninit(const char *name)
+{
+ struct rte_eth_dev *eth_dev;
+ struct virtio_hw *hw;
+ struct virtio_user_dev *dev;
+
+ if (!name)
+ return -EINVAL;
+
+ PMD_DRV_LOG(INFO, "Un-Initializing %s\n", name);
+ eth_dev = rte_eth_dev_allocated(name);
+ if (!eth_dev)
+ return -ENODEV;
+
+ /* make sure the device is stopped, queues freed */
+ rte_eth_dev_close(eth_dev->data->port_id);
+
+ hw = eth_dev->data->dev_private;
+ dev = hw->virtio_user_dev;
+ virtio_user_dev_uninit(dev);
+
+ rte_free(eth_dev->data->dev_private);
+ rte_free(eth_dev->data);
+ rte_eth_dev_release_port(eth_dev);
+
+ return 0;
+}
+
+static struct rte_driver virtio_user_driver = {
+ .type = PMD_VDEV,
+ .init = virtio_user_pmd_devinit,
+ .uninit = virtio_user_pmd_devuninit,
+};
+
+PMD_REGISTER_DRIVER(virtio_user_driver, virtio_user);
+DRIVER_REGISTER_PARAM_STRING(virtio_user,
+ "path=<path> "
+ "mac=<mac addr> "
+ "cq=<int> "
+ "queue_size=<int> "
+ "queues=<int>");
git.droids-corp.org / dpdk.git / blobdiff