struct rte_kni *
rte_kni_alloc(struct rte_mempool *pktmbuf_pool,
const struct rte_kni_conf *conf,
struct rte_kni_ops *ops)
{
int ret;
struct rte_kni_device_info dev_info;
struct rte_kni *ctx;
char intf_name[RTE_KNI_NAMESIZE];
char mz_name[RTE_MEMZONE_NAMESIZE];
const struct rte_memzone *mz;
const struct rte_mempool *mp;
struct rte_kni_memzone_slot *slot = NULL;
if (!pktmbuf_pool || !conf || !conf->name[0])
return NULL;
/* Check if KNI subsystem has been initialized */
if (kni_memzone_pool.initialized != 1) {
RTE_LOG(ERR, KNI, "KNI subsystem has not been initialized. Invoke rte_kni_init() first\n");
return NULL;
}
/* Get an available slot from the pool */
slot = kni_memzone_pool_alloc();
if (!slot) {
RTE_LOG(ERR, KNI, "Cannot allocate more KNI interfaces; increase the number of max_kni_ifaces(current %d) or release unusued ones.\n",
kni_memzone_pool.max_ifaces);
return NULL;
}
/* Recover ctx */
ctx = slot->m_ctx->addr;
snprintf(intf_name, RTE_KNI_NAMESIZE, "%s", conf->name);
if (ctx->in_use) {
RTE_LOG(ERR, KNI, "KNI %s is in use\n", ctx->name);
return NULL;
}
memset(ctx, 0, sizeof(struct rte_kni));
if (ops)
memcpy(&ctx->ops, ops, sizeof(struct rte_kni_ops));
memset(&dev_info, 0, sizeof(dev_info));
dev_info.bus = conf->addr.bus;
dev_info.devid = conf->addr.devid;
dev_info.function = conf->addr.function;
dev_info.vendor_id = conf->id.vendor_id;
dev_info.device_id = conf->id.device_id;
dev_info.core_id = conf->core_id;
dev_info.force_bind = conf->force_bind;
dev_info.group_id = conf->group_id;
dev_info.mbuf_size = conf->mbuf_size;
#ifdef RTE_LIBRW_PIOT
dev_info.no_data = conf->no_data;
dev_info.no_pci = conf->no_pci;
dev_info.ifindex = conf->ifindex;
dev_info.always_up = conf->always_up;
dev_info.no_tx = conf->no_tx;
dev_info.loopback = conf->loopback;
dev_info.no_user_ring = conf->no_user_ring;
dev_info.mtu = conf->mtu;
dev_info.vlanid = conf->vlanid;
memcpy(dev_info.mac, conf->mac, 6);
strncpy(dev_info.netns_name, conf->netns_name, sizeof(dev_info.netns_name));
dev_info.netns_fd = conf->netns_fd;
dev_info.pid = getpid();
#ifdef RTE_LIBRW_NOHUGE
dev_info.nohuge = conf->nohuge;
dev_info.nl_pid = conf->nl_pid;
#endif
#endif
snprintf(ctx->name, RTE_KNI_NAMESIZE, "%s", intf_name);
snprintf(dev_info.name, RTE_KNI_NAMESIZE, "%s", intf_name);
RTE_LOG(INFO, KNI, "pci: %02x:%02x:%02x \t %02x:%02x\n",
dev_info.bus, dev_info.devid, dev_info.function,
dev_info.vendor_id, dev_info.device_id);
/* TX RING */
mz = slot->m_tx_q;
ctx->tx_q = mz->addr;
kni_fifo_init(ctx->tx_q, KNI_FIFO_COUNT_MAX);
dev_info.tx_phys = mz->phys_addr;
/* RX RING */
mz = slot->m_rx_q;
ctx->rx_q = mz->addr;
kni_fifo_init(ctx->rx_q, KNI_FIFO_COUNT_MAX);
dev_info.rx_phys = mz->phys_addr;
/* ALLOC RING */
mz = slot->m_alloc_q;
ctx->alloc_q = mz->addr;
kni_fifo_init(ctx->alloc_q, KNI_FIFO_COUNT_MAX);
dev_info.alloc_phys = mz->phys_addr;
/* FREE RING */
mz = slot->m_free_q;
ctx->free_q = mz->addr;
kni_fifo_init(ctx->free_q, KNI_FIFO_COUNT_MAX);
dev_info.free_phys = mz->phys_addr;
#ifndef RTE_LIBRW_PIOT
/* Request RING */
mz = slot->m_req_q;
ctx->req_q = mz->addr;
kni_fifo_init(ctx->req_q, KNI_FIFO_COUNT_MAX);
dev_info.req_phys = mz->phys_addr;
/* Response RING */
mz = slot->m_resp_q;
ctx->resp_q = mz->addr;
kni_fifo_init(ctx->resp_q, KNI_FIFO_COUNT_MAX);
dev_info.resp_phys = mz->phys_addr;
/* Req/Resp sync mem area */
mz = slot->m_sync_addr;
ctx->sync_addr = mz->addr;
dev_info.sync_va = mz->addr;
dev_info.sync_phys = mz->phys_addr;
#endif
/* MBUF mempool */
snprintf(mz_name, sizeof(mz_name), RTE_MEMPOOL_MZ_FORMAT,
pktmbuf_pool->name);
mz = rte_memzone_lookup(mz_name);
KNI_MEM_CHECK(mz == NULL);
mp = (struct rte_mempool *)mz->addr;
/* KNI currently requires to have only one memory chunk */
if (mp->nb_mem_chunks != 1)
goto kni_fail;
dev_info.mbuf_va = STAILQ_FIRST(&mp->mem_list)->addr;
dev_info.mbuf_phys = STAILQ_FIRST(&mp->mem_list)->phys_addr;
ctx->pktmbuf_pool = pktmbuf_pool;
ctx->group_id = conf->group_id;
ctx->slot_id = slot->id;
ctx->mbuf_size = conf->mbuf_size;
ret = ioctl(kni_fd, RTE_KNI_IOCTL_CREATE, &dev_info);
KNI_MEM_CHECK(ret < 0);
ctx->in_use = 1;
/* Allocate mbufs and then put them into alloc_q */
kni_allocate_mbufs(ctx);
return ctx;
kni_fail:
if (slot)
kni_memzone_pool_release(&kni_memzone_pool.slots[slot->id]);
return NULL;
}
struct rte_kni *
rte_kni_create(uint8_t port_id,
unsigned mbuf_size,
struct rte_mempool *pktmbuf_pool,
struct rte_kni_ops *ops)
{
struct rte_kni_device_info dev_info;
struct rte_eth_dev_info eth_dev_info;
struct rte_kni *ctx;
char itf_name[IFNAMSIZ];
#define OBJNAMSIZ 32
char obj_name[OBJNAMSIZ];
const struct rte_memzone *mz;
if (port_id >= RTE_MAX_ETHPORTS || pktmbuf_pool == NULL || !ops)
return NULL;
/* Check FD and open once */
if (kni_fd < 0) {
kni_fd = open("/dev/" KNI_DEVICE, O_RDWR);
if (kni_fd < 0) {
RTE_LOG(ERR, KNI, "Can not open /dev/%s\n",
KNI_DEVICE);
return NULL;
}
}
rte_eth_dev_info_get(port_id, ð_dev_info);
RTE_LOG(INFO, KNI, "pci: %02x:%02x:%02x \t %02x:%02x\n",
eth_dev_info.pci_dev->addr.bus,
eth_dev_info.pci_dev->addr.devid,
eth_dev_info.pci_dev->addr.function,
eth_dev_info.pci_dev->id.vendor_id,
eth_dev_info.pci_dev->id.device_id);
dev_info.bus = eth_dev_info.pci_dev->addr.bus;
dev_info.devid = eth_dev_info.pci_dev->addr.devid;
dev_info.function = eth_dev_info.pci_dev->addr.function;
dev_info.vendor_id = eth_dev_info.pci_dev->id.vendor_id;
dev_info.device_id = eth_dev_info.pci_dev->id.device_id;
ctx = rte_zmalloc("kni devs", sizeof(struct rte_kni), 0);
if (ctx == NULL)
rte_panic("Cannot allocate memory for kni dev\n");
memcpy(&ctx->ops, ops, sizeof(struct rte_kni_ops));
rte_snprintf(itf_name, IFNAMSIZ, "vEth%u", port_id);
rte_snprintf(ctx->name, IFNAMSIZ, itf_name);
rte_snprintf(dev_info.name, IFNAMSIZ, itf_name);
/* TX RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_tx_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_tx_%d queue\n", port_id);
ctx->tx_q = mz->addr;
kni_fifo_init(ctx->tx_q, KNI_FIFO_COUNT_MAX);
dev_info.tx_phys = mz->phys_addr;
/* RX RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_rx_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_rx_%d queue\n", port_id);
ctx->rx_q = mz->addr;
kni_fifo_init(ctx->rx_q, KNI_FIFO_COUNT_MAX);
dev_info.rx_phys = mz->phys_addr;
/* ALLOC RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_alloc_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_alloc_%d queue\n", port_id);
ctx->alloc_q = mz->addr;
kni_fifo_init(ctx->alloc_q, KNI_FIFO_COUNT_MAX);
dev_info.alloc_phys = mz->phys_addr;
/* FREE RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_free_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_free_%d queue\n", port_id);
ctx->free_q = mz->addr;
kni_fifo_init(ctx->free_q, KNI_FIFO_COUNT_MAX);
dev_info.free_phys = mz->phys_addr;
/* Request RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_req_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_req_%d ring\n", port_id);
ctx->req_q = mz->addr;
kni_fifo_init(ctx->req_q, KNI_FIFO_COUNT_MAX);
dev_info.req_phys = mz->phys_addr;
/* Response RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_resp_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_resp_%d ring\n", port_id);
ctx->resp_q = mz->addr;
kni_fifo_init(ctx->resp_q, KNI_FIFO_COUNT_MAX);
dev_info.resp_phys = mz->phys_addr;
/* Req/Resp sync mem area */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_sync_%d", port_id);
mz = rte_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
if (mz == NULL || mz->addr == NULL)
rte_panic("Cannot create kni_sync_%d mem\n", port_id);
ctx->sync_addr = mz->addr;
dev_info.sync_va = mz->addr;
dev_info.sync_phys = mz->phys_addr;
/* MBUF mempool */
mz = rte_memzone_lookup("MP_mbuf_pool");
if (mz == NULL) {
RTE_LOG(ERR, KNI, "Can not find MP_mbuf_pool\n");
goto fail;
}
dev_info.mbuf_va = mz->addr;
dev_info.mbuf_phys = mz->phys_addr;
ctx->pktmbuf_pool = pktmbuf_pool;
ctx->port_id = port_id;
ctx->mbuf_size = mbuf_size;
/* Configure the buffer size which will be checked in kernel module */
dev_info.mbuf_size = ctx->mbuf_size;
if (ioctl(kni_fd, RTE_KNI_IOCTL_CREATE, &dev_info) < 0) {
RTE_LOG(ERR, KNI, "Fail to create kni device\n");
goto fail;
}
return ctx;
fail:
if (ctx != NULL)
rte_free(ctx);
return NULL;
}
struct rte_kni *
rte_kni_alloc(struct rte_mempool *pktmbuf_pool,
const struct rte_kni_conf *conf,
struct rte_kni_ops *ops)
{
int ret;
struct rte_kni_device_info dev_info;
struct rte_kni *ctx;
char intf_name[RTE_KNI_NAMESIZE];
const struct rte_memzone *mz;
struct rte_kni_memzone_slot *slot = NULL;
if (!pktmbuf_pool || !conf || !conf->name[0])
return NULL;
/* Check if KNI subsystem has been initialized */
if (kni_memzone_pool.initialized != 1) {
RTE_LOG(ERR, KNI, "KNI subsystem has not been initialized. Invoke rte_kni_init() first\n");
return NULL;
}
/* Get an available slot from the pool */
slot = kni_memzone_pool_alloc();
if (!slot) {
RTE_LOG(ERR, KNI, "Cannot allocate more KNI interfaces; increase the number of max_kni_ifaces(current %d) or release unusued ones.\n",
kni_memzone_pool.max_ifaces);
return NULL;
}
/* Recover ctx */
ctx = slot->m_ctx->addr;
snprintf(intf_name, RTE_KNI_NAMESIZE, "%s", conf->name);
if (ctx->in_use) {
RTE_LOG(ERR, KNI, "KNI %s is in use\n", ctx->name);
return NULL;
}
memset(ctx, 0, sizeof(struct rte_kni));
if (ops)
memcpy(&ctx->ops, ops, sizeof(struct rte_kni_ops));
memset(&dev_info, 0, sizeof(dev_info));
dev_info.bus = conf->addr.bus;
dev_info.devid = conf->addr.devid;
dev_info.function = conf->addr.function;
dev_info.vendor_id = conf->id.vendor_id;
dev_info.device_id = conf->id.device_id;
dev_info.core_id = conf->core_id;
dev_info.force_bind = conf->force_bind;
dev_info.group_id = conf->group_id;
dev_info.mbuf_size = conf->mbuf_size;
snprintf(ctx->name, RTE_KNI_NAMESIZE, "%s", intf_name);
snprintf(dev_info.name, RTE_KNI_NAMESIZE, "%s", intf_name);
RTE_LOG(INFO, KNI, "pci: %02x:%02x:%02x \t %02x:%02x\n",
dev_info.bus, dev_info.devid, dev_info.function,
dev_info.vendor_id, dev_info.device_id);
/* TX RING */
mz = slot->m_tx_q;
ctx->tx_q = mz->addr;
kni_fifo_init(ctx->tx_q, KNI_FIFO_COUNT_MAX);
dev_info.tx_phys = mz->phys_addr;
/* RX RING */
mz = slot->m_rx_q;
ctx->rx_q = mz->addr;
kni_fifo_init(ctx->rx_q, KNI_FIFO_COUNT_MAX);
dev_info.rx_phys = mz->phys_addr;
/* ALLOC RING */
mz = slot->m_alloc_q;
ctx->alloc_q = mz->addr;
kni_fifo_init(ctx->alloc_q, KNI_FIFO_COUNT_MAX);
dev_info.alloc_phys = mz->phys_addr;
/* FREE RING */
mz = slot->m_free_q;
ctx->free_q = mz->addr;
kni_fifo_init(ctx->free_q, KNI_FIFO_COUNT_MAX);
dev_info.free_phys = mz->phys_addr;
/* Request RING */
mz = slot->m_req_q;
ctx->req_q = mz->addr;
kni_fifo_init(ctx->req_q, KNI_FIFO_COUNT_MAX);
dev_info.req_phys = mz->phys_addr;
/* Response RING */
mz = slot->m_resp_q;
ctx->resp_q = mz->addr;
kni_fifo_init(ctx->resp_q, KNI_FIFO_COUNT_MAX);
dev_info.resp_phys = mz->phys_addr;
/* Req/Resp sync mem area */
mz = slot->m_sync_addr;
ctx->sync_addr = mz->addr;
dev_info.sync_va = mz->addr;
dev_info.sync_phys = mz->phys_addr;
ctx->pktmbuf_pool = pktmbuf_pool;
ctx->group_id = conf->group_id;
ctx->slot_id = slot->id;
ctx->mbuf_size = conf->mbuf_size;
ret = ioctl(kni_fd, RTE_KNI_IOCTL_CREATE, &dev_info);
KNI_MEM_CHECK(ret < 0);
ctx->in_use = 1;
/* Allocate mbufs and then put them into alloc_q */
kni_allocate_mbufs(ctx);
return ctx;
kni_fail:
if (slot)
kni_memzone_pool_release(&kni_memzone_pool.slots[slot->id]);
return NULL;
}
static int
kni_vhost_backend_init(struct kni_dev *kni)
{
struct kni_vhost_queue *q;
struct net *net = current->nsproxy->net_ns;
int err, i, sockfd;
struct rte_kni_fifo *fifo;
struct sk_buff *elem;
if (kni->vhost_queue != NULL)
return -1;
if (!(q = (struct kni_vhost_queue *)sk_alloc(
net, AF_UNSPEC, GFP_KERNEL, &kni_raw_proto)))
return -ENOMEM;
err = sock_create_lite(AF_UNSPEC, SOCK_RAW, IPPROTO_RAW, &q->sock);
if (err)
goto free_sk;
sockfd = kni_sock_map_fd(q->sock);
if (sockfd < 0) {
err = sockfd;
goto free_sock;
}
/* cache init */
q->cache = (struct sk_buff*)
kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(struct sk_buff),
GFP_KERNEL);
if (!q->cache)
goto free_fd;
fifo = (struct rte_kni_fifo*)
kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(void *)
+ sizeof(struct rte_kni_fifo), GFP_KERNEL);
if (!fifo)
goto free_cache;
kni_fifo_init(fifo, RTE_KNI_VHOST_MAX_CACHE_SIZE);
for (i = 0; i < RTE_KNI_VHOST_MAX_CACHE_SIZE; i++) {
elem = &q->cache[i];
kni_fifo_put(fifo, (void**)&elem, 1);
}
q->fifo = fifo;
/* store sockfd in vhost_queue */
q->sockfd = sockfd;
/* init socket */
q->sock->type = SOCK_RAW;
q->sock->state = SS_CONNECTED;
q->sock->ops = &kni_socket_ops;
sock_init_data(q->sock, &q->sk);
/* init sock data */
q->sk.sk_write_space = kni_sk_write_space;
q->sk.sk_destruct = kni_sk_destruct;
q->flags = IFF_NO_PI | IFF_TAP;
q->vnet_hdr_sz = sizeof(struct virtio_net_hdr);
#ifdef RTE_KNI_VHOST_VNET_HDR_EN
q->flags |= IFF_VNET_HDR;
#endif
/* bind kni_dev with vhost_queue */
q->kni = kni;
kni->vhost_queue = q;
wmb();
kni->vq_status = BE_START;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
KNI_DBG("backend init sockfd=%d, sock->wq=0x%16llx,"
"sk->sk_wq=0x%16llx",
q->sockfd, (uint64_t)q->sock->wq,
(uint64_t)q->sk.sk_wq);
#else
KNI_DBG("backend init sockfd=%d, sock->wait at 0x%16llx,"
"sk->sk_sleep=0x%16llx",
q->sockfd, (uint64_t)&q->sock->wait,
(uint64_t)q->sk.sk_sleep);
#endif
return 0;
free_cache:
kfree(q->cache);
q->cache = NULL;
free_fd:
put_unused_fd(sockfd);
free_sock:
q->kni = NULL;
kni->vhost_queue = NULL;
kni->vq_status |= BE_FINISH;
sock_release(q->sock);
q->sock->ops = NULL;
q->sock = NULL;
free_sk:
sk_free((struct sock*)q);
return err;
}
struct rte_kni *
rte_kni_alloc(struct rte_mempool *pktmbuf_pool,
const struct rte_kni_conf *conf,
struct rte_kni_ops *ops)
{
int ret;
struct rte_kni_device_info dev_info;
struct rte_kni *ctx;
char intf_name[RTE_KNI_NAMESIZE];
#define OBJNAMSIZ 32
char obj_name[OBJNAMSIZ];
char mz_name[RTE_MEMZONE_NAMESIZE];
const struct rte_memzone *mz;
if (!pktmbuf_pool || !conf || !conf->name[0])
return NULL;
/* Check FD and open once */
if (kni_fd < 0) {
kni_fd = open("/dev/" KNI_DEVICE, O_RDWR);
if (kni_fd < 0) {
RTE_LOG(ERR, KNI, "Can not open /dev/%s\n",
KNI_DEVICE);
return NULL;
}
}
rte_snprintf(intf_name, RTE_KNI_NAMESIZE, conf->name);
rte_snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "KNI_INFO_%s", intf_name);
mz = kni_memzone_reserve(mz_name, sizeof(struct rte_kni),
SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx = mz->addr;
if (ctx->in_use) {
RTE_LOG(ERR, KNI, "KNI %s is in use\n", ctx->name);
goto fail;
}
memset(ctx, 0, sizeof(struct rte_kni));
if (ops)
memcpy(&ctx->ops, ops, sizeof(struct rte_kni_ops));
memset(&dev_info, 0, sizeof(dev_info));
dev_info.bus = conf->addr.bus;
dev_info.devid = conf->addr.devid;
dev_info.function = conf->addr.function;
dev_info.vendor_id = conf->id.vendor_id;
dev_info.device_id = conf->id.device_id;
dev_info.core_id = conf->core_id;
dev_info.force_bind = conf->force_bind;
dev_info.group_id = conf->group_id;
dev_info.mbuf_size = conf->mbuf_size;
rte_snprintf(ctx->name, RTE_KNI_NAMESIZE, intf_name);
rte_snprintf(dev_info.name, RTE_KNI_NAMESIZE, intf_name);
RTE_LOG(INFO, KNI, "pci: %02x:%02x:%02x \t %02x:%02x\n",
dev_info.bus, dev_info.devid, dev_info.function,
dev_info.vendor_id, dev_info.device_id);
/* TX RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_tx_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->tx_q = mz->addr;
kni_fifo_init(ctx->tx_q, KNI_FIFO_COUNT_MAX);
dev_info.tx_phys = mz->phys_addr;
/* RX RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_rx_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->rx_q = mz->addr;
kni_fifo_init(ctx->rx_q, KNI_FIFO_COUNT_MAX);
dev_info.rx_phys = mz->phys_addr;
/* ALLOC RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_alloc_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->alloc_q = mz->addr;
kni_fifo_init(ctx->alloc_q, KNI_FIFO_COUNT_MAX);
dev_info.alloc_phys = mz->phys_addr;
/* FREE RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_free_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->free_q = mz->addr;
kni_fifo_init(ctx->free_q, KNI_FIFO_COUNT_MAX);
dev_info.free_phys = mz->phys_addr;
/* Request RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_req_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->req_q = mz->addr;
kni_fifo_init(ctx->req_q, KNI_FIFO_COUNT_MAX);
dev_info.req_phys = mz->phys_addr;
/* Response RING */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_resp_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->resp_q = mz->addr;
kni_fifo_init(ctx->resp_q, KNI_FIFO_COUNT_MAX);
dev_info.resp_phys = mz->phys_addr;
/* Req/Resp sync mem area */
rte_snprintf(obj_name, OBJNAMSIZ, "kni_sync_%s", intf_name);
mz = kni_memzone_reserve(obj_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
KNI_MZ_CHECK(mz == NULL);
ctx->sync_addr = mz->addr;
dev_info.sync_va = mz->addr;
dev_info.sync_phys = mz->phys_addr;
/* MBUF mempool */
rte_snprintf(mz_name, sizeof(mz_name), "MP_%s", pktmbuf_pool->name);
mz = rte_memzone_lookup(mz_name);
KNI_MZ_CHECK(mz == NULL);
dev_info.mbuf_va = mz->addr;
dev_info.mbuf_phys = mz->phys_addr;
ctx->pktmbuf_pool = pktmbuf_pool;
ctx->group_id = conf->group_id;
ctx->mbuf_size = conf->mbuf_size;
ret = ioctl(kni_fd, RTE_KNI_IOCTL_CREATE, &dev_info);
KNI_MZ_CHECK(ret < 0);
ctx->in_use = 1;
return ctx;
fail:
return NULL;
}
