#include <sys/un.h>
#include <sys/uio.h>
#include <sys/mman.h>
-#include <sys/prctl.h>
#include <sys/eventfd.h>
#include <inttypes.h>
#include <limits.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
-#include <vppinfra/linux/syscall.h>
#include <vnet/plugin/plugin.h>
#include <vnet/ethernet/ethernet.h>
+#include <vnet/interface/rx_queue_funcs.h>
+#include <vnet/interface/tx_queue_funcs.h>
#include <vpp/app/version.h>
#include <memif/memif.h>
#include <memif/private.h>
return 0;
}
+static clib_error_t *
+memif_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
+ u32 flags)
+{
+ /* nothing for now */
+ return 0;
+}
+
static void
memif_queue_intfd_close (memif_queue_t * mq)
{
}
}
+static void
+memif_disconnect_free_zc_queue_buffer (memif_queue_t * mq, u8 is_rx)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ u16 ring_size, n_slots, mask, start;
+
+ ring_size = 1 << mq->log2_ring_size;
+ mask = ring_size - 1;
+ n_slots = mq->ring->head - mq->last_tail;
+ start = mq->last_tail & mask;
+ if (is_rx)
+ vlib_buffer_free_from_ring (vm, mq->buffers, start, ring_size, n_slots);
+ else
+ vlib_buffer_free_from_ring_no_next (vm, mq->buffers, start, ring_size,
+ n_slots);
+ vec_free (mq->buffers);
+}
+
void
memif_disconnect (memif_if_t * mif, clib_error_t * err)
{
memif_region_t *mr;
memif_queue_t *mq;
int i;
+ vlib_main_t *vm = vlib_get_main ();
+ int with_barrier = 0;
if (mif == 0)
return;
- DBG ("disconnect %u (%v)", mif->dev_instance, err ? err->what : 0);
+ memif_log_debug (mif, "disconnect %u (%v)", mif->dev_instance,
+ err ? err->what : 0);
if (err)
{
clib_error_t *err;
err = clib_socket_close (mif->sock);
if (err)
- clib_error_report (err);
+ {
+ memif_log_err (mif, "%U", format_clib_error, err);
+ clib_error_free (err);
+ }
clib_mem_free (mif->sock);
}
+ if (vlib_worker_thread_barrier_held () == 0)
+ {
+ with_barrier = 1;
+ vlib_worker_thread_barrier_sync (vm);
+ }
+
vec_foreach_index (i, mif->rx_queues)
+ {
+ mq = vec_elt_at_index (mif->rx_queues, i);
+ if (mq->ring)
+ {
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ {
+ memif_disconnect_free_zc_queue_buffer(mq, 1);
+ }
+ mq->ring = 0;
+ }
+ }
+ vnet_hw_if_unregister_all_rx_queues (vnm, mif->hw_if_index);
+
+ vec_foreach_index (i, mif->tx_queues)
{
- mq = vec_elt_at_index (mif->rx_queues, i);
+ mq = vec_elt_at_index (mif->tx_queues, i);
if (mq->ring)
+ {
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
{
- int rv;
- rv = vnet_hw_interface_unassign_rx_thread (vnm, mif->hw_if_index, i);
- if (rv)
- DBG ("Warning: unable to unassign interface %d, "
- "queue %d: rc=%d", mif->hw_if_index, i, rv);
- mq->ring = 0;
+ memif_disconnect_free_zc_queue_buffer(mq, 0);
}
+ clib_spinlock_free (&mq->lockp);
+ }
+ mq->ring = 0;
}
+ vnet_hw_if_unregister_all_tx_queues (vnm, mif->hw_if_index);
+ vnet_hw_if_update_runtime_data (vnm, mif->hw_if_index);
/* free tx and rx queues */
- vec_foreach (mq, mif->rx_queues) memif_queue_intfd_close (mq);
+ vec_foreach (mq, mif->rx_queues)
+ memif_queue_intfd_close (mq);
vec_free (mif->rx_queues);
- vec_foreach (mq, mif->tx_queues) memif_queue_intfd_close (mq);
+ vec_foreach (mq, mif->tx_queues)
+ memif_queue_intfd_close (mq);
vec_free (mif->tx_queues);
/* free memory regions */
vec_foreach (mr, mif->regions)
- {
- int rv;
- if ((rv = munmap (mr->shm, mr->region_size)))
- clib_warning ("munmap failed, rv = %d", rv);
- if (mr->fd > -1)
- close (mr->fd);
- }
+ {
+ int rv;
+ if (mr->is_external)
+ continue;
+ if ((rv = munmap (mr->shm, mr->region_size)))
+ memif_log_err (mif, "munmap failed, rv = %d", rv);
+ if (mr->fd > -1)
+ close (mr->fd);
+ }
vec_free (mif->regions);
vec_free (mif->remote_name);
vec_free (mif->remote_if_name);
clib_fifo_free (mif->msg_queue);
+
+ if (with_barrier)
+ vlib_worker_thread_barrier_release (vm);
+}
+
+static clib_error_t *
+memif_int_fd_write_ready (clib_file_t * uf)
+{
+ memif_main_t *mm = &memif_main;
+ u16 qid = uf->private_data & 0xFFFF;
+ memif_if_t *mif = vec_elt_at_index (mm->interfaces, uf->private_data >> 16);
+
+ memif_log_warn (mif, "unexpected EPOLLOUT on RX for queue %u", qid);
+ return 0;
}
static clib_error_t *
size = read (uf->file_descriptor, &b, sizeof (b));
if (size < 0)
{
- DBG_UNIX_LOG ("Failed to read from socket");
+ memif_log_debug (mif, "Failed to read from socket");
return 0;
}
- vnet_device_input_set_interrupt_pending (vnm, mif->hw_if_index, qid);
+ vnet_hw_if_rx_queue_set_int_pending (vnm, mq->queue_index);
mq->int_count++;
return 0;
clib_error_t *
memif_connect (memif_if_t * mif)
{
+ memif_main_t *mm = &memif_main;
+ vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
clib_file_t template = { 0 };
memif_region_t *mr;
- int i;
+ int i, j;
+ u32 n_txqs = 0, n_threads = vlib_get_n_threads ();
+ clib_error_t *err = NULL;
+ u8 max_log2_ring_sz = 0;
+ int with_barrier = 0;
- DBG ("connect %u", mif->dev_instance);
+ memif_log_debug (mif, "connect %u", mif->dev_instance);
vec_free (mif->local_disc_string);
vec_free (mif->remote_disc_string);
vec_foreach (mr, mif->regions)
- {
- if (mr->shm)
- continue;
+ {
+ if (mr->shm)
+ continue;
- if (mr->fd < 0)
- clib_error_return (0, "no memory region fd");
+ if (mr->fd < 0)
+ {
+ err = clib_error_return (0, "no memory region fd");
+ goto error;
+ }
- if ((mr->shm = mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE,
- MAP_SHARED, mr->fd, 0)) == MAP_FAILED)
- return clib_error_return_unix (0, "mmap");
- }
+ if ((mr->shm = mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, mr->fd, 0)) == MAP_FAILED)
+ {
+ err = clib_error_return_unix (0, "mmap");
+ goto error;
+ }
+ }
template.read_function = memif_int_fd_read_ready;
+ template.write_function = memif_int_fd_write_ready;
+
+ with_barrier = 1;
+ if (vlib_worker_thread_barrier_held ())
+ with_barrier = 0;
+
+ if (with_barrier)
+ vlib_worker_thread_barrier_sync (vm);
vec_foreach_index (i, mif->tx_queues)
- {
- memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i);
+ {
+ memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i);
+ max_log2_ring_sz = clib_max (max_log2_ring_sz, mq->log2_ring_size);
- mq->ring = mif->regions[mq->region].shm + mq->offset;
- if (mq->ring->cookie != MEMIF_COOKIE)
- return clib_error_return (0, "wrong cookie on tx ring %u", i);
- }
+ mq->ring = mif->regions[mq->region].shm + mq->offset;
+ if (mq->ring->cookie != MEMIF_COOKIE)
+ {
+ err = clib_error_return (0, "wrong cookie on tx ring %u", i);
+ goto error;
+ }
+ mq->queue_index =
+ vnet_hw_if_register_tx_queue (vnm, mif->hw_if_index, i);
+ clib_spinlock_init (&mq->lockp);
+
+ if (mif->flags & MEMIF_IF_FLAG_USE_DMA)
+ {
+ memif_dma_info_t *dma_info;
+ mq->dma_head = 0;
+ mq->dma_tail = 0;
+ mq->dma_info_head = 0;
+ mq->dma_info_tail = 0;
+ mq->dma_info_size = MEMIF_DMA_INFO_SIZE;
+ vec_validate_aligned (mq->dma_info, MEMIF_DMA_INFO_SIZE,
+ CLIB_CACHE_LINE_BYTES);
+
+ vec_foreach (dma_info, mq->dma_info)
+ {
+ vec_validate_aligned (dma_info->data.desc_data,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.desc_len,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.desc_status,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.copy_ops, 0,
+ CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (dma_info->data.copy_ops);
+ vec_validate_aligned (dma_info->data.buffers, 0,
+ CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (dma_info->data.buffers);
+ }
+ }
+ }
+
+ if (vec_len (mif->tx_queues) > 0)
+ {
+ n_txqs = vec_len (mif->tx_queues);
+ for (j = 0; j < n_threads; j++)
+ {
+ u32 qi = mif->tx_queues[j % n_txqs].queue_index;
+ vnet_hw_if_tx_queue_assign_thread (vnm, qi, j);
+ }
+ }
vec_foreach_index (i, mif->rx_queues)
- {
- memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i);
- int rv;
+ {
+ memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i);
+ u32 ti;
+ u32 qi;
+ int rv;
- mq->ring = mif->regions[mq->region].shm + mq->offset;
- if (mq->ring->cookie != MEMIF_COOKIE)
- return clib_error_return (0, "wrong cookie on tx ring %u", i);
+ max_log2_ring_sz = clib_max (max_log2_ring_sz, mq->log2_ring_size);
- if (mq->int_fd > -1)
- {
- template.file_descriptor = mq->int_fd;
- template.private_data = (mif->dev_instance << 16) | (i & 0xFFFF);
- memif_file_add (&mq->int_clib_file_index, &template);
- }
- vnet_hw_interface_assign_rx_thread (vnm, mif->hw_if_index, i, ~0);
- rv = vnet_hw_interface_set_rx_mode (vnm, mif->hw_if_index, i,
- VNET_HW_INTERFACE_RX_MODE_DEFAULT);
- if (rv)
- clib_warning
- ("Warning: unable to set rx mode for interface %d queue %d: "
- "rc=%d", mif->hw_if_index, i, rv);
- else
- {
- vnet_hw_interface_rx_mode rxmode;
- vnet_hw_interface_get_rx_mode (vnm, mif->hw_if_index, i, &rxmode);
+ mq->ring = mif->regions[mq->region].shm + mq->offset;
+ if (mq->ring->cookie != MEMIF_COOKIE)
+ {
+ err = clib_error_return (0, "wrong cookie on tx ring %u", i);
+ goto error;
+ }
+ qi = vnet_hw_if_register_rx_queue (vnm, mif->hw_if_index, i,
+ VNET_HW_IF_RXQ_THREAD_ANY);
+ mq->queue_index = qi;
- if (rxmode == VNET_HW_INTERFACE_RX_MODE_POLLING)
- mq->ring->flags |= MEMIF_RING_FLAG_MASK_INT;
- }
- }
+ if (mif->flags & MEMIF_IF_FLAG_USE_DMA)
+ {
+ memif_dma_info_t *dma_info;
+ mq->dma_head = 0;
+ mq->dma_tail = 0;
+ mq->dma_info_head = 0;
+ mq->dma_info_tail = 0;
+ mq->dma_info_size = MEMIF_DMA_INFO_SIZE;
+ vec_validate_aligned (mq->dma_info, MEMIF_DMA_INFO_SIZE,
+ CLIB_CACHE_LINE_BYTES);
+ vec_foreach (dma_info, mq->dma_info)
+ {
+ vec_validate_aligned (dma_info->data.desc_data,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.desc_len,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.desc_status,
+ pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (dma_info->data.copy_ops, 0,
+ CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (dma_info->data.copy_ops);
+ vec_validate_aligned (dma_info->data.buffers, 0,
+ CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (dma_info->data.buffers);
+ }
+ }
+
+ if (mq->int_fd > -1)
+ {
+ template.file_descriptor = mq->int_fd;
+ template.private_data = (mif->dev_instance << 16) | (i & 0xFFFF);
+ template.description = format (0, "%U rx %u int",
+ format_memif_device_name,
+ mif->dev_instance, i);
+ memif_file_add (&mq->int_clib_file_index, &template);
+ vnet_hw_if_set_rx_queue_file_index (vnm, qi,
+ mq->int_clib_file_index);
+ }
+ ti = vnet_hw_if_get_rx_queue_thread_index (vnm, qi);
+ mq->buffer_pool_index = vlib_buffer_pool_get_default_for_numa (
+ vm, vlib_get_main_by_index (ti)->numa_node);
+ rv = vnet_hw_if_set_rx_queue_mode (vnm, qi, VNET_HW_IF_RX_MODE_DEFAULT);
+ vnet_hw_if_update_runtime_data (vnm, mif->hw_if_index);
+
+ if (rv)
+ memif_log_err
+ (mif, "Warning: unable to set rx mode for interface %d queue %d: "
+ "rc=%d", mif->hw_if_index, i, rv);
+ else
+ {
+ vnet_hw_if_rx_mode rxmode = vnet_hw_if_get_rx_queue_mode (vnm, qi);
+
+ if (rxmode == VNET_HW_IF_RX_MODE_POLLING)
+ mq->ring->flags |= MEMIF_RING_FLAG_MASK_INT;
+ else
+ vnet_hw_if_rx_queue_set_int_pending (vnm, qi);
+ }
+ }
+
+ if (1 << max_log2_ring_sz > vec_len (mm->per_thread_data[0].desc_data))
+ {
+ memif_per_thread_data_t *ptd;
+
+ vec_foreach (ptd, mm->per_thread_data)
+ {
+ vec_validate_aligned (ptd->desc_data, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (ptd->desc_len, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (ptd->desc_status, pow2_mask (max_log2_ring_sz),
+ CLIB_CACHE_LINE_BYTES);
+ }
+ }
+ if (with_barrier)
+ vlib_worker_thread_barrier_release (vm);
mif->flags &= ~MEMIF_IF_FLAG_CONNECTING;
mif->flags |= MEMIF_IF_FLAG_CONNECTED;
vnet_hw_interface_set_flags (vnm, mif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
return 0;
+
+error:
+ if (with_barrier)
+ vlib_worker_thread_barrier_release (vm);
+ memif_log_err (mif, "%U", format_clib_error, err);
+ return err;
}
static_always_inline memif_ring_t *
clib_error_t *
memif_init_regions_and_queues (memif_if_t * mif)
{
+ vlib_main_t *vm = vlib_get_main ();
+ memif_socket_file_t *msf;
memif_ring_t *ring = NULL;
- int i, j;
+ int fd, i, j;
u64 buffer_offset;
memif_region_t *r;
- clib_mem_vm_alloc_t alloc = { 0 };
clib_error_t *err;
- vec_validate_aligned (mif->regions, 0, CLIB_CACHE_LINE_BYTES);
- r = vec_elt_at_index (mif->regions, 0);
+ ASSERT (vec_len (mif->regions) == 0);
+ vec_add2_aligned (mif->regions, r, 1, CLIB_CACHE_LINE_BYTES);
buffer_offset = (mif->run.num_s2m_rings + mif->run.num_m2s_rings) *
(sizeof (memif_ring_t) +
sizeof (memif_desc_t) * (1 << mif->run.log2_ring_size));
- r->region_size = buffer_offset +
- mif->run.buffer_size * (1 << mif->run.log2_ring_size) *
- (mif->run.num_s2m_rings + mif->run.num_m2s_rings);
+ r->region_size = buffer_offset;
- alloc.name = "memif region";
- alloc.size = r->region_size;
- alloc.flags = CLIB_MEM_VM_F_SHARED;
+ if ((mif->flags & MEMIF_IF_FLAG_ZERO_COPY) == 0)
+ r->region_size += mif->run.buffer_size * (1 << mif->run.log2_ring_size) *
+ (mif->run.num_s2m_rings + mif->run.num_m2s_rings);
- err = clib_mem_vm_ext_alloc (&alloc);
- if (err)
- return err;
+ if ((fd = clib_mem_vm_create_fd (CLIB_MEM_PAGE_SZ_DEFAULT, "%U region 0",
+ format_memif_device_name,
+ mif->dev_instance)) == -1)
+ {
+ err = clib_mem_get_last_error ();
+ goto error;
+ }
+
+ if ((ftruncate (fd, r->region_size)) == -1)
+ {
+ err = clib_error_return_unix (0, "ftruncate");
+ goto error;
+ }
+
+ msf = pool_elt_at_index (memif_main.socket_files, mif->socket_file_index);
+ r->shm = clib_mem_vm_map_shared (0, r->region_size, fd, 0, "memif%lu/%lu:0",
+ msf->socket_id, mif->id);
+
+ if (r->shm == CLIB_MEM_VM_MAP_FAILED)
+ {
+ err = clib_error_return_unix (0, "memif shared region map failed");
+ goto error;
+ }
- r->fd = alloc.fd;
- r->shm = alloc.addr;
+ r->fd = fd;
+
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ {
+ vlib_buffer_pool_t *bp;
+ vec_foreach (bp, vm->buffer_main->buffer_pools)
+ {
+ vlib_physmem_map_t *pm;
+ pm = vlib_physmem_get_map (vm, bp->physmem_map_index);
+ vec_add2_aligned (mif->regions, r, 1, CLIB_CACHE_LINE_BYTES);
+ r->fd = pm->fd;
+ r->region_size = pm->n_pages << pm->log2_page_size;
+ r->shm = pm->base;
+ r->is_external = 1;
+ }
+ }
for (i = 0; i < mif->run.num_s2m_rings; i++)
{
ring = memif_get_ring (mif, MEMIF_RING_S2M, i);
ring->head = ring->tail = 0;
ring->cookie = MEMIF_COOKIE;
+
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ continue;
+
for (j = 0; j < (1 << mif->run.log2_ring_size); j++)
{
u16 slot = i * (1 << mif->run.log2_ring_size) + j;
ring->desc[j].region = 0;
ring->desc[j].offset =
buffer_offset + (u32) (slot * mif->run.buffer_size);
- ring->desc[j].buffer_length = mif->run.buffer_size;
+ ring->desc[j].length = mif->run.buffer_size;
}
}
for (i = 0; i < mif->run.num_m2s_rings; i++)
ring = memif_get_ring (mif, MEMIF_RING_M2S, i);
ring->head = ring->tail = 0;
ring->cookie = MEMIF_COOKIE;
+
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ continue;
+
for (j = 0; j < (1 << mif->run.log2_ring_size); j++)
{
u16 slot =
ring->desc[j].region = 0;
ring->desc[j].offset =
buffer_offset + (u32) (slot * mif->run.buffer_size);
- ring->desc[j].buffer_length = mif->run.buffer_size;
+ ring->desc[j].length = mif->run.buffer_size;
}
}
ASSERT (mif->tx_queues == 0);
vec_validate_aligned (mif->tx_queues, mif->run.num_s2m_rings - 1,
CLIB_CACHE_LINE_BYTES);
+
vec_foreach_index (i, mif->tx_queues)
- {
- memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i);
- if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
- return clib_error_return_unix (0, "eventfd[tx queue %u]", i);
- mq->int_clib_file_index = ~0;
- mq->ring = memif_get_ring (mif, MEMIF_RING_S2M, i);
- mq->log2_ring_size = mif->cfg.log2_ring_size;
- mq->region = 0;
- mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm;
- mq->last_head = 0;
- }
+ {
+ memif_queue_t *mq = vec_elt_at_index (mif->tx_queues, i);
+ if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
+ {
+ err = clib_error_return_unix (0, "eventfd[tx queue %u]", i);
+ goto error;
+ }
+
+ mq->int_clib_file_index = ~0;
+ mq->ring = memif_get_ring (mif, MEMIF_RING_S2M, i);
+ mq->log2_ring_size = mif->cfg.log2_ring_size;
+ mq->region = 0;
+ mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm;
+ mq->last_head = 0;
+ mq->type = MEMIF_RING_S2M;
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ vec_validate_aligned (mq->buffers, 1 << mq->log2_ring_size,
+ CLIB_CACHE_LINE_BYTES);
+ }
ASSERT (mif->rx_queues == 0);
vec_validate_aligned (mif->rx_queues, mif->run.num_m2s_rings - 1,
CLIB_CACHE_LINE_BYTES);
+
vec_foreach_index (i, mif->rx_queues)
- {
- memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i);
- if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
- return clib_error_return_unix (0, "eventfd[rx queue %u]", i);
- mq->int_clib_file_index = ~0;
- mq->ring = memif_get_ring (mif, MEMIF_RING_M2S, i);
- mq->log2_ring_size = mif->cfg.log2_ring_size;
- mq->region = 0;
- mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm;
- mq->last_head = 0;
- }
+ {
+ memif_queue_t *mq = vec_elt_at_index (mif->rx_queues, i);
+ if ((mq->int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
+ {
+ err = clib_error_return_unix (0, "eventfd[rx queue %u]", i);
+ goto error;
+ }
+ mq->int_clib_file_index = ~0;
+ mq->ring = memif_get_ring (mif, MEMIF_RING_M2S, i);
+ mq->log2_ring_size = mif->cfg.log2_ring_size;
+ mq->region = 0;
+ mq->offset = (void *) mq->ring - (void *) mif->regions[mq->region].shm;
+ mq->last_head = 0;
+ mq->type = MEMIF_RING_M2S;
+ if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY)
+ vec_validate_aligned (mq->buffers, 1 << mq->log2_ring_size,
+ CLIB_CACHE_LINE_BYTES);
+ }
return 0;
+
+error:
+ memif_log_err (mif, "%U", format_clib_error, err);
+ return err;
}
static uword
clib_error_t *err;
sock = clib_mem_alloc (sizeof (clib_socket_t));
- memset (sock, 0, sizeof (clib_socket_t));
+ clib_memset (sock, 0, sizeof (clib_socket_t));
while (1)
{
case MEMIF_PROCESS_EVENT_STOP:
enabled = 0;
continue;
+ case MEMIF_PROCESS_EVENT_ADMIN_UP_DOWN:
+ break;
default:
ASSERT (0);
}
last_run_duration = start_time = vlib_time_now (vm);
- /* *INDENT-OFF* */
- pool_foreach (mif, mm->interfaces,
- ({
+ pool_foreach (mif, mm->interfaces)
+ {
memif_socket_file_t * msf = vec_elt_at_index (mm->socket_files, mif->socket_file_index);
/* Allow no more than 10us without a pause */
now = vlib_time_now (vm);
if (mif->flags & MEMIF_IF_FLAG_IS_SLAVE)
{
- memset (sock, 0, sizeof(clib_socket_t));
+ clib_memset (sock, 0, sizeof(clib_socket_t));
sock->config = (char *) msf->filename;
- sock->flags = CLIB_SOCKET_F_IS_CLIENT| CLIB_SOCKET_F_SEQPACKET;
+ sock->is_seqpacket = 1;
+ sock->is_blocking = 1;
- if ((err = clib_socket_init (sock)))
+ if ((err = clib_socket_init (sock)))
{
clib_error_free (err);
}
t.file_descriptor = sock->fd;
t.private_data = mif->dev_instance;
memif_file_add (&sock->private_data, &t);
+ t.description = format (0, "%U ctl",
+ format_memif_device_name,
+ mif->dev_instance);
hash_set (msf->dev_instance_by_fd, sock->fd, mif->dev_instance);
mif->flags |= MEMIF_IF_FLAG_CONNECTING;
sock = clib_mem_alloc (sizeof(clib_socket_t));
}
}
- }));
- /* *INDENT-ON* */
+ }
last_run_duration = vlib_time_now (vm) - last_run_duration;
}
return 0;
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (memif_process_node,static) = {
.function = memif_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "memif-process",
};
-/* *INDENT-ON* */
-
-static int
-memif_add_socket_file (u32 sock_id, u8 * socket_filename)
+/*
+ * Returns an unused socket id, and ~0 if it can't find one.
+ */
+u32
+memif_get_unused_socket_id ()
{
memif_main_t *mm = &memif_main;
uword *p;
- memif_socket_file_t *msf;
+ int i, j;
- p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
- if (p)
+ static u32 seed = 0;
+ /* limit to 1M tries */
+ for (j = 0; j < 1 << 10; j++)
{
- msf = pool_elt_at_index (mm->socket_files, *p);
- if (strcmp ((char *) msf->filename, (char *) socket_filename) == 0)
+ seed = random_u32 (&seed);
+ for (i = 0; i < 1 << 10; i++)
{
- /* Silently accept identical "add". */
- return 0;
+ /* look around randomly generated id */
+ seed += (2 * (i % 2) - 1) * i;
+ if (seed == (u32) ~0)
+ continue;
+ p = hash_get (mm->socket_file_index_by_sock_id, seed);
+ if (!p)
+ return seed;
}
-
- /* But don't allow a direct add of a different filename. */
- return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
}
- DBG ("creating socket file (uninitialized) %s", msf->filename);
-
- pool_get (mm->socket_files, msf);
- memset (msf, 0, sizeof (memif_socket_file_t));
-
- msf->filename = socket_filename;
- msf->socket_id = sock_id;
-
- hash_set (mm->socket_file_index_by_sock_id, sock_id,
- msf - mm->socket_files);
-
- return 0;
+ return ~0;
}
-static int
-memif_delete_socket_file (u32 sock_id)
+clib_error_t *
+memif_socket_filename_add_del (u8 is_add, u32 sock_id, char *sock_filename)
{
memif_main_t *mm = &memif_main;
uword *p;
memif_socket_file_t *msf;
+ clib_error_t *err = 0;
+ char *dir = 0, *tmp;
+ u32 idx = 0;
+ u8 *name = 0;
- p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
- if (!p)
- {
- /* Don't delete non-existent entries. */
- return VNET_API_ERROR_INVALID_ARGUMENT;
- }
+ /* allow adding socket id 0 */
+ if (sock_id == 0 && is_add == 0)
+ return vnet_error (VNET_ERR_INVALID_ARGUMENT, "cannot delete socket id 0");
- msf = pool_elt_at_index (mm->socket_files, *p);
- if (msf->ref_cnt > 0)
+ if (sock_id == ~0)
+ return vnet_error (VNET_ERR_INVALID_ARGUMENT,
+ "socked id is not specified");
+
+ if (is_add == 0)
{
- return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
- }
+ p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
+ if (!p)
+ /* Don't delete non-existent entries. */
+ return vnet_error (VNET_ERR_INVALID_ARGUMENT,
+ "socket file with id %u does not exist", sock_id);
- vec_free (msf->filename);
- pool_put (mm->socket_files, msf);
+ msf = pool_elt_at_index (mm->socket_files, *p);
+ if (msf->ref_cnt > 0)
+ return vnet_error (VNET_ERR_UNEXPECTED_INTF_STATE,
+ "socket file '%s' is in use", msf->filename);
- hash_unset (mm->socket_file_index_by_sock_id, sock_id);
+ vec_free (msf->filename);
+ pool_put (mm->socket_files, msf);
- return 0;
-}
+ hash_unset (mm->socket_file_index_by_sock_id, sock_id);
-int
-memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 * sock_filename)
-{
- if (sock_id == 0 || sock_id == ~0)
- {
- return VNET_API_ERROR_INVALID_ARGUMENT;
+ return 0;
}
- if (is_add == 0)
+ if (sock_filename == 0 || sock_filename[0] == 0)
+ return vnet_error (VNET_ERR_INVALID_ARGUMENT,
+ "socket filename not specified");
+
+ if (clib_socket_prefix_is_valid (sock_filename))
{
- return memif_delete_socket_file (sock_id);
+ name = format (0, "%s%c", sock_filename, 0);
}
-
- if (sock_filename == 0 || sock_filename[0] == 0)
+ else if (sock_filename[0] == '/')
{
- return VNET_API_ERROR_INVALID_ARGUMENT;
+ name = format (0, "%s%c", sock_filename, 0);
}
-
- if (sock_filename[0] != '/')
+ else
{
- clib_error_t *error;
- error = vlib_unix_recursive_mkdir (vlib_unix_get_runtime_dir ());
- if (error)
+ /* copy runtime dir path */
+ vec_add (dir, vlib_unix_get_runtime_dir (),
+ strlen (vlib_unix_get_runtime_dir ()));
+ vec_add1 (dir, '/');
+
+ /* if sock_filename contains dirs, add them to path */
+ tmp = strrchr (sock_filename, '/');
+ if (tmp)
{
- clib_error_free (error);
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ idx = tmp - sock_filename;
+ vec_add (dir, sock_filename, idx);
}
- sock_filename = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
- sock_filename, 0);
+ vec_add1 (dir, '\0');
+ /* create socket dir */
+ if ((err = vlib_unix_recursive_mkdir (dir)))
+ {
+ clib_error_free (err);
+ err = vnet_error (VNET_ERR_SYSCALL_ERROR_1,
+ "unable to create socket dir");
+ goto done;
+ }
+
+ name =
+ format (0, "%s/%s%c", vlib_unix_get_runtime_dir (), sock_filename, 0);
}
- else
+
+ p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
+ if (p)
{
- sock_filename = vec_dup (sock_filename);
+ msf = pool_elt_at_index (mm->socket_files, *p);
+ if (strcmp ((char *) msf->filename, (char *) name) == 0)
+ {
+ /* Silently accept identical "add". */
+ goto done;
+ }
+
+ /* But don't allow a direct add of a different filename. */
+ err = vnet_error (VNET_ERR_ENTRY_ALREADY_EXISTS, "entry already exists");
+ goto done;
}
- return memif_add_socket_file (sock_id, sock_filename);
+ pool_get (mm->socket_files, msf);
+ clib_memset (msf, 0, sizeof (memif_socket_file_t));
+
+ msf->filename = name;
+ msf->socket_id = sock_id;
+ name = 0;
+
+ hash_set (mm->socket_file_index_by_sock_id, sock_id, msf - mm->socket_files);
+
+done:
+ vec_free (name);
+ vec_free (dir);
+ return err;
}
-int
-memif_delete_if (vlib_main_t * vm, memif_if_t * mif)
+clib_error_t *
+memif_delete_if (vlib_main_t *vm, memif_if_t *mif)
{
vnet_main_t *vnm = vnet_get_main ();
memif_main_t *mm = &memif_main;
memif_disconnect (mif, err);
clib_error_free (err);
- /* remove the interface */
- if (mif->mode == MEMIF_INTERFACE_MODE_IP)
- vnet_delete_hw_interface (vnm, mif->hw_if_index);
- else
- ethernet_delete_interface (vnm, mif->hw_if_index);
- mif->hw_if_index = ~0;
+ if (mif->hw_if_index != ~0)
+ {
+ /* remove the interface */
+ if (mif->mode == MEMIF_INTERFACE_MODE_IP)
+ vnet_delete_hw_interface (vnm, mif->hw_if_index);
+ else
+ ethernet_delete_interface (vnm, mif->hw_if_index);
+ mif->hw_if_index = ~0;
+ }
/* free interface data structures */
- clib_spinlock_free (&mif->lockp);
mhash_unset (&msf->dev_instance_by_id, &mif->id, 0);
/* remove socket file */
{
int i;
vec_foreach_index (i, msf->pending_clients)
- {
memif_socket_close (msf->pending_clients + i);
- }
memif_socket_close (&msf->sock);
vec_free (msf->pending_clients);
}
{
err = clib_socket_close (msf->sock);
if (err)
- clib_error_report (err);
+ {
+ memif_log_err (mif, "%U", format_clib_error, err);
+ clib_error_free (err);
+ }
clib_mem_free (msf->sock);
}
}
- memset (mif, 0, sizeof (*mif));
+ vec_free (mif->local_disc_string);
+ clib_memset (mif, 0, sizeof (*mif));
pool_put (mm->interfaces, mif);
if (pool_elts (mm->interfaces) == 0)
return 0;
}
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (memif_ip_hw_if_class, static) =
-{
+VNET_HW_INTERFACE_CLASS (memif_ip_hw_if_class, static) = {
.name = "memif-ip",
.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
+ .tx_hash_fn_type = VNET_HASH_FN_TYPE_IP,
};
-/* *INDENT-ON* */
-int
-memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args)
+static void
+memif_prepare_dma_args (vlib_dma_config_t *args)
+{
+ args->max_batches = 256;
+ args->max_transfer_size = VLIB_BUFFER_DEFAULT_DATA_SIZE;
+ args->barrier_before_last = 1;
+ args->sw_fallback = 1;
+ args->callback_fn = NULL;
+}
+
+clib_error_t *
+memif_create_if (vlib_main_t *vm, memif_create_if_args_t *args)
{
memif_main_t *mm = &memif_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
vnet_main_t *vnm = vnet_get_main ();
+ vnet_eth_interface_registration_t eir = {};
memif_if_t *mif = 0;
vnet_sw_interface_t *sw;
- clib_error_t *error = 0;
- int ret = 0;
uword *p;
- vnet_hw_interface_t *hw;
memif_socket_file_t *msf = 0;
- int rv = 0;
+ clib_error_t *err = 0;
p = hash_get (mm->socket_file_index_by_sock_id, args->socket_id);
if (p == 0)
{
- rv = VNET_API_ERROR_INVALID_ARGUMENT;
+ err = vnet_error (VNET_ERR_INVALID_ARGUMENT, "unknown socket id");
goto done;
}
{
if ((!msf->is_listener != !args->is_master))
{
- rv = VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
+ err =
+ vnet_error (VNET_ERR_SUBIF_ALREADY_EXISTS,
+ "socket file cannot be used by both master and slave");
goto done;
}
p = mhash_get (&msf->dev_instance_by_id, &args->id);
if (p)
{
- rv = VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
+ err = vnet_error (VNET_ERR_SUBIF_ALREADY_EXISTS,
+ "interface already exists");
goto done;
}
}
/* Create new socket file */
if (msf->ref_cnt == 0)
{
- struct stat file_stat;
-
- /* If we are creating listener make sure file doesn't exist or if it
- * exists thn delete it if it is old socket file */
- if (args->is_master && (stat ((char *) msf->filename, &file_stat) == 0))
- {
- if (S_ISSOCK (file_stat.st_mode))
- {
- unlink ((char *) msf->filename);
- }
- else
- {
- error = clib_error_return (0, "File exists for %s",
- msf->filename);
- clib_error_report (error);
- rv = VNET_API_ERROR_VALUE_EXIST;
- goto done;
- }
- }
-
mhash_init (&msf->dev_instance_by_id, sizeof (uword),
sizeof (memif_interface_id_t));
msf->dev_instance_by_fd = hash_create (0, sizeof (uword));
msf->is_listener = (args->is_master != 0);
- DBG ("initializing socket file %s", msf->filename);
+ memif_log_debug (0, "initializing socket file %s", msf->filename);
+ }
+
+ if (mm->per_thread_data == 0)
+ {
+ int i;
+
+ vec_validate_aligned (mm->per_thread_data, tm->n_vlib_mains - 1,
+ CLIB_CACHE_LINE_BYTES);
+
+ for (i = 0; i < tm->n_vlib_mains; i++)
+ {
+ memif_per_thread_data_t *ptd =
+ vec_elt_at_index (mm->per_thread_data, i);
+ vlib_buffer_t *bt = &ptd->buffer_template;
+ clib_memset (bt, 0, sizeof (vlib_buffer_t));
+ bt->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ bt->total_length_not_including_first_buffer = 0;
+ vnet_buffer (bt)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+
+ vec_validate_aligned (ptd->copy_ops, 0, CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (ptd->copy_ops);
+ vec_validate_aligned (ptd->buffers, 0, CLIB_CACHE_LINE_BYTES);
+ vec_reset_length (ptd->buffers);
+ }
}
pool_get (mm->interfaces, mif);
- memset (mif, 0, sizeof (*mif));
+ clib_memset (mif, 0, sizeof (*mif));
mif->dev_instance = mif - mm->interfaces;
mif->socket_file_index = msf - mm->socket_files;
mif->id = args->id;
if (args->secret)
mif->secret = vec_dup (args->secret);
- if (tm->n_vlib_mains > 1)
- clib_spinlock_init (&mif->lockp);
+ /* register dma config if enabled */
+ if (args->use_dma)
+ {
+ vlib_dma_config_t dma_args;
+ bzero (&dma_args, sizeof (dma_args));
+ memif_prepare_dma_args (&dma_args);
+
+ dma_args.max_transfers = 1 << args->log2_ring_size;
+ dma_args.callback_fn = memif_dma_completion_cb;
+ mif->dma_input_config = vlib_dma_config_add (vm, &dma_args);
+ dma_args.callback_fn = memif_tx_dma_completion_cb;
+ mif->dma_tx_config = vlib_dma_config_add (vm, &dma_args);
+ }
if (mif->mode == MEMIF_INTERFACE_MODE_ETHERNET)
{
args->hw_addr[0] = 2;
args->hw_addr[1] = 0xfe;
}
- error = ethernet_register_interface (vnm, memif_device_class.index,
- mif->dev_instance, args->hw_addr,
- &mif->hw_if_index,
- memif_eth_flag_change);
+
+ eir.dev_class_index = memif_device_class.index;
+ eir.dev_instance = mif->dev_instance;
+ eir.address = args->hw_addr;
+ eir.cb.flag_change = memif_eth_flag_change;
+ eir.cb.set_max_frame_size = memif_eth_set_max_frame_size;
+ mif->hw_if_index = vnet_eth_register_interface (vnm, &eir);
}
else if (mif->mode == MEMIF_INTERFACE_MODE_IP)
{
mif->dev_instance);
}
else
- error = clib_error_return (0, "unsupported interface mode");
-
- if (error)
{
- clib_error_report (error);
- ret = VNET_API_ERROR_SYSCALL_ERROR_2;
+ err =
+ vnet_error (VNET_ERR_SYSCALL_ERROR_2, "unsupported interface mode");
goto error;
}
/* If this is new one, start listening */
if (msf->is_listener && msf->ref_cnt == 0)
{
- struct stat file_stat;
clib_socket_t *s = clib_mem_alloc (sizeof (clib_socket_t));
ASSERT (msf->sock == 0);
msf->sock = s;
- memset (s, 0, sizeof (clib_socket_t));
+ clib_memset (s, 0, sizeof (clib_socket_t));
s->config = (char *) msf->filename;
- s->flags = CLIB_SOCKET_F_IS_SERVER |
- CLIB_SOCKET_F_ALLOW_GROUP_WRITE |
- CLIB_SOCKET_F_SEQPACKET | CLIB_SOCKET_F_PASSCRED;
+ s->local_only = 1;
+ s->is_server = 1;
+ s->allow_group_write = 1;
+ s->is_seqpacket = 1;
+ s->passcred = 1;
- if ((error = clib_socket_init (s)))
+ if ((err = clib_socket_init (s)))
{
- clib_error_report (error);
- ret = VNET_API_ERROR_SYSCALL_ERROR_4;
- goto error;
- }
-
- if (stat ((char *) msf->filename, &file_stat) == -1)
- {
- ret = VNET_API_ERROR_SYSCALL_ERROR_8;
+ err->code = VNET_ERR_SYSCALL_ERROR_4;
goto error;
}
template.read_function = memif_conn_fd_accept_ready;
template.file_descriptor = msf->sock->fd;
template.private_data = mif->socket_file_index;
+ template.description = format (0, "memif listener %s", msf->filename);
memif_file_add (&msf->sock->private_data, &template);
}
msf->ref_cnt++;
if (args->is_master == 0)
- mif->flags |= MEMIF_IF_FLAG_IS_SLAVE;
+ {
+ mif->flags |= MEMIF_IF_FLAG_IS_SLAVE;
+ if (args->is_zero_copy)
+ mif->flags |= MEMIF_IF_FLAG_ZERO_COPY;
+ }
- hw = vnet_get_hw_interface (vnm, mif->hw_if_index);
- hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
- vnet_hw_interface_set_input_node (vnm, mif->hw_if_index,
- memif_input_node.index);
+ if (args->use_dma)
+ mif->flags |= MEMIF_IF_FLAG_USE_DMA;
+ vnet_hw_if_set_caps (vnm, mif->hw_if_index, VNET_HW_IF_CAP_INT_MODE);
+ vnet_hw_if_set_input_node (vnm, mif->hw_if_index, memif_input_node.index);
mhash_set (&msf->dev_instance_by_id, &mif->id, mif->dev_instance, 0);
if (pool_elts (mm->interfaces) == 1)
goto done;
error:
- if (mif->hw_if_index != ~0)
- {
- if (mif->mode == MEMIF_INTERFACE_MODE_IP)
- vnet_delete_hw_interface (vnm, mif->hw_if_index);
- else
- ethernet_delete_interface (vnm, mif->hw_if_index);
- mif->hw_if_index = ~0;
- }
memif_delete_if (vm, mif);
- return ret;
+ if (err)
+ memif_log_err (mif, "%U", format_clib_error, err);
+ return err;
done:
- return rv;
+ return err;
}
+clib_error_t *
+memif_interface_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
+{
+ memif_main_t *mm = &memif_main;
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ memif_if_t *mif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
+ static clib_error_t *error = 0;
+
+ if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
+ {
+ if (mif->flags & MEMIF_IF_FLAG_CONNECTED)
+ {
+ vnet_hw_interface_set_flags (vnm, mif->hw_if_index,
+ VNET_HW_INTERFACE_FLAG_LINK_UP);
+ }
+ mif->flags |= MEMIF_IF_FLAG_ADMIN_UP;
+ }
+ else
+ mif->flags &= ~MEMIF_IF_FLAG_ADMIN_UP;
+
+ vlib_process_signal_event (vnm->vlib_main, memif_process_node.index,
+ MEMIF_PROCESS_EVENT_ADMIN_UP_DOWN, 0);
+ return error;
+}
static clib_error_t *
memif_init (vlib_main_t * vm)
{
memif_main_t *mm = &memif_main;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- u8 *filename;
- memset (mm, 0, sizeof (memif_main_t));
+ clib_memset (mm, 0, sizeof (memif_main_t));
+
+ mm->log_class = vlib_log_register_class ("memif_plugin", 0);
+ memif_log_debug (0, "initialized");
/* initialize binary API */
memif_plugin_api_hookup (vm);
* for socket-id 0 to MEMIF_DEFAULT_SOCKET_FILENAME in the
* default run-time directory.
*/
- filename = format (0, "%s/%s%c",
- vlib_unix_get_runtime_dir (),
- MEMIF_DEFAULT_SOCKET_FILENAME, 0);
- memif_add_socket_file (0, filename);
-
- vec_validate_aligned (mm->rx_buffers, tm->n_vlib_mains - 1,
- CLIB_CACHE_LINE_BYTES);
-
- return 0;
+ return memif_socket_filename_add_del (1, 0, MEMIF_DEFAULT_SOCKET_FILENAME);
}
VLIB_INIT_FUNCTION (memif_init);
-/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
- .description = "Packet Memory Interface (experimetal)",
+ .description = "Packet Memory Interface (memif) -- Experimental",
};
-/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff