* Allocate/free network buffers.
*/
+#include <unistd.h>
+#include <linux/vfio.h>
+#include <sys/ioctl.h>
+
#include <rte_config.h>
#include <rte_common.h>
#include <rte_version.h>
#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlib/pci/pci.h>
+#include <vlib/linux/vfio.h>
#include <vnet/vnet.h>
#include <dpdk/device/dpdk.h>
#include <dpdk/device/dpdk_priv.h>
-
STATIC_ASSERT (VLIB_BUFFER_PRE_DATA_SIZE == RTE_PKTMBUF_HEADROOM,
"VLIB_BUFFER_PRE_DATA_SIZE must be equal to RTE_PKTMBUF_HEADROOM");
-static struct rte_mbuf ***mbuf_pending_free_list = 0;
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ struct rte_mbuf ***mbuf_pending_free_list;
+
+ /* cached last pool */
+ struct rte_mempool *last_pool;
+ u8 last_buffer_pool_index;
+} dpdk_buffer_per_thread_data;
+
+typedef struct
+{
+ int vfio_container_fd;
+ dpdk_buffer_per_thread_data *ptd;
+} dpdk_buffer_main_t;
+
+dpdk_buffer_main_t dpdk_buffer_main;
static_always_inline void
-dpdk_rte_pktmbuf_free (vlib_main_t * vm, vlib_buffer_t * b)
+dpdk_rte_pktmbuf_free (vlib_main_t * vm, u32 thread_index, vlib_buffer_t * b)
{
vlib_buffer_t *hb = b;
+ dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
+ dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
struct rte_mbuf *mb;
u32 next, flags;
mb = rte_mbuf_from_vlib_buffer (hb);
- static struct rte_mempool *last_pool = 0;
- static u8 last_buffer_pool_index;
next:
flags = b->flags;
mb = rte_pktmbuf_prefree_seg (mb);
if (mb)
{
- if (mb->pool != last_pool)
+ if (mb->pool != d->last_pool)
{
- last_pool = mb->pool;
- dpdk_mempool_private_t *privp = rte_mempool_get_priv (last_pool);
- last_buffer_pool_index = privp->buffer_pool_index;
- vec_validate_aligned (mbuf_pending_free_list,
- last_buffer_pool_index,
+ d->last_pool = mb->pool;
+ dpdk_mempool_private_t *privp = rte_mempool_get_priv (d->last_pool);
+ d->last_buffer_pool_index = privp->buffer_pool_index;
+ vec_validate_aligned (d->mbuf_pending_free_list,
+ d->last_buffer_pool_index,
CLIB_CACHE_LINE_BYTES);
}
- vec_add1 (mbuf_pending_free_list[last_buffer_pool_index], mb);
+ vec_add1 (d->mbuf_pending_free_list[d->last_buffer_pool_index], mb);
}
if (flags & VLIB_BUFFER_NEXT_PRESENT)
{
u32 i;
vlib_buffer_t *b;
+ u32 thread_index = vlib_get_thread_index ();
for (i = 0; i < vec_len (f->buffers); i++)
{
b = vlib_get_buffer (vm, f->buffers[i]);
- dpdk_rte_pktmbuf_free (vm, b);
+ dpdk_rte_pktmbuf_free (vm, thread_index, b);
}
vec_free (f->name);
/* Add buffer free list. */
static void
-dpdk_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index)
+dpdk_buffer_delete_free_list (vlib_main_t * vm,
+ vlib_buffer_free_list_index_t free_list_index)
{
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_free_list_t *f;
- u32 merge_index;
+ vlib_buffer_free_list_index_t merge_index;
int i;
ASSERT (vlib_get_thread_index () == 0);
f = vlib_buffer_get_free_list (vm, free_list_index);
merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes);
- if (merge_index != ~0 && merge_index != free_list_index)
+ if (merge_index != (vlib_buffer_free_list_index_t) ~ 0 &&
+ merge_index != free_list_index)
{
vlib_buffer_merge_free_lists (pool_elt_at_index
(bm->buffer_free_list_pool, merge_index),
#endif
/* Make sure free list has at least given number of free buffers. */
-static uword
-fill_free_list (vlib_main_t * vm,
- vlib_buffer_free_list_t * fl, uword min_free_buffers)
+uword
+CLIB_MULTIARCH_FN (dpdk_buffer_fill_free_list) (vlib_main_t * vm,
+ vlib_buffer_free_list_t * fl,
+ uword min_free_buffers)
{
dpdk_main_t *dm = &dpdk_main;
vlib_buffer_t *b0, *b1, *b2, *b3;
return n;
}
-static u32
-alloc_from_free_list (vlib_main_t * vm,
- vlib_buffer_free_list_t * free_list,
- u32 * alloc_buffers, u32 n_alloc_buffers)
-{
- u32 *dst, *src;
- uword len, n_filled;
-
- dst = alloc_buffers;
-
- n_filled = fill_free_list (vm, free_list, n_alloc_buffers);
- if (n_filled == 0)
- return 0;
-
- len = vec_len (free_list->buffers);
- ASSERT (len >= n_alloc_buffers);
-
- src = free_list->buffers + len - n_alloc_buffers;
- clib_memcpy (dst, src, n_alloc_buffers * sizeof (u32));
-
- _vec_len (free_list->buffers) -= n_alloc_buffers;
-
- return n_alloc_buffers;
-}
-
-/* Allocate a given number of buffers into given array.
- Returns number actually allocated which will be either zero or
- number requested. */
-u32
-CLIB_MULTIARCH_FN (dpdk_buffer_alloc) (vlib_main_t * vm, u32 * buffers,
- u32 n_buffers)
-{
- vlib_buffer_main_t *bm = vm->buffer_main;
-
- return alloc_from_free_list
- (vm,
- pool_elt_at_index (bm->buffer_free_list_pool,
- VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX),
- buffers, n_buffers);
-}
-
-
-u32
-CLIB_MULTIARCH_FN (dpdk_buffer_alloc_from_free_list) (vlib_main_t * vm,
- u32 * buffers,
- u32 n_buffers,
- u32 free_list_index)
-{
- vlib_buffer_main_t *bm = vm->buffer_main;
- vlib_buffer_free_list_t *f;
- f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index);
- return alloc_from_free_list (vm, f, buffers, n_buffers);
-}
-
static_always_inline void
dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
{
struct rte_mbuf *mb;
b = vlib_get_buffer (vm, bi);
mb = rte_mbuf_from_vlib_buffer (b);
- CLIB_PREFETCH (mb, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (mb, 2 * CLIB_CACHE_LINE_BYTES, STORE);
CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
}
vlib_buffer_t * b)
{
vlib_buffer_free_list_t *fl;
- u32 fi;
+ u32 thread_index = vlib_get_thread_index ();
+ vlib_buffer_free_list_index_t fi;
fl = vlib_buffer_get_buffer_free_list (vm, b, &fi);
/* The only current use of this callback: multicast recycle */
else
{
if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_RECYCLE) == 0))
- dpdk_rte_pktmbuf_free (vm, b);
+ dpdk_rte_pktmbuf_free (vm, thread_index, b);
}
}
u32 * buffers, u32 n_buffers, u32 follow_buffer_next)
{
vlib_buffer_main_t *bm = vm->buffer_main;
+ dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
vlib_buffer_t *b0, *b1, *b2, *b3;
+ u32 thread_index = vlib_get_thread_index ();
+ dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
int i = 0;
u32 (*cb) (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
u32 follow_buffer_next);
while (i < n_buffers)
{
b0 = vlib_get_buffer (vm, buffers[i]);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
recycle_or_free (vm, bm, buffers[i], b0);
i++;
}
_vec_len (bm->announce_list) = 0;
}
- vec_foreach_index (i, mbuf_pending_free_list)
+ vec_foreach_index (i, d->mbuf_pending_free_list)
{
- int len = vec_len (mbuf_pending_free_list[i]);
+ int len = vec_len (d->mbuf_pending_free_list[i]);
if (len)
{
- rte_mempool_put_bulk (mbuf_pending_free_list[i][len - 1]->pool,
- (void *) mbuf_pending_free_list[i], len);
- vec_reset_length (mbuf_pending_free_list[i]);
+ rte_mempool_put_bulk (d->mbuf_pending_free_list[i][len - 1]->pool,
+ (void *) d->mbuf_pending_free_list[i], len);
+ vec_reset_length (d->mbuf_pending_free_list[i]);
}
}
}
vlib_worker_thread_barrier_release (vm);
}
+static clib_error_t *
+scan_vfio_fd (void *arg, u8 * path_name, u8 * file_name)
+{
+ dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
+ linux_vfio_main_t *lvm = &vfio_main;
+ const char fn[] = "/dev/vfio/vfio";
+ char buff[sizeof (fn)] = { 0 };
+ int fd;
+ u8 *path = format (0, "%v%c", path_name, 0);
+
+ if (readlink ((char *) path, buff, sizeof (fn)) + 1 != sizeof (fn))
+ goto done;
+
+ if (strncmp (fn, buff, sizeof (fn)))
+ goto done;
+
+ fd = atoi ((char *) file_name);
+ if (fd != lvm->container_fd)
+ dbm->vfio_container_fd = fd;
+
+done:
+ vec_free (path);
+ return 0;
+}
+
+clib_error_t *
+dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
+ u32 num_elts, u32 pool_priv_size, u16 cache_size, u8 numa,
+ struct rte_mempool ** _mp,
+ vlib_physmem_region_index_t * pri)
+{
+ dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
+ struct rte_mempool *mp;
+ vlib_physmem_region_t *pr;
+ clib_error_t *error = 0;
+ u32 size, obj_size;
+ i32 ret;
+
+ obj_size = rte_mempool_calc_obj_size (elt_size, 0, 0);
+ size = rte_mempool_xmem_size (num_elts, obj_size, 21, 0);
+
+ error =
+ vlib_physmem_region_alloc (vm, (i8 *) pool_name, size, numa,
+ VLIB_PHYSMEM_F_HUGETLB | VLIB_PHYSMEM_F_SHARED,
+ pri);
+ if (error)
+ return error;
+
+ pr = vlib_physmem_get_region (vm, pri[0]);
+
+ mp =
+ rte_mempool_create_empty ((i8 *) pool_name, num_elts, elt_size,
+ 512, pool_priv_size, numa, 0);
+ if (!mp)
+ return clib_error_return (0, "failed to create %s", pool_name);
+
+ rte_mempool_set_ops_byname (mp, RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
+
+ ret =
+ rte_mempool_populate_iova_tab (mp, pr->mem, pr->page_table, pr->n_pages,
+ pr->log2_page_size, NULL, NULL);
+ if (ret != (i32) mp->size)
+ {
+ rte_mempool_free (mp);
+ return clib_error_return (0, "failed to populate %s", pool_name);
+ }
+
+ _mp[0] = mp;
+
+ /* DPDK currently doesn't provide API to map DMA memory for empty mempool
+ so we are using this hack, will be nice to have at least API to get
+ VFIO container FD */
+ if (dbm->vfio_container_fd == -1)
+ foreach_directory_file ("/proc/self/fd", scan_vfio_fd, 0, 0);
+
+ if (dbm->vfio_container_fd != -1)
+ {
+ struct vfio_iommu_type1_dma_map dm = { 0 };
+ int i, rv = 0;
+ dm.argsz = sizeof (struct vfio_iommu_type1_dma_map);
+ dm.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE;
+
+ /* *INDENT-OFF* */
+ vec_foreach_index (i, pr->page_table)
+ {
+ dm.vaddr = pointer_to_uword (pr->mem) + (i << pr->log2_page_size);
+ dm.size = 1 << pr->log2_page_size;
+ dm.iova = pr->page_table[i];
+ if ((rv = ioctl (dbm->vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dm)))
+ break;
+ }
+ /* *INDENT-ON* */
+ if (rv != 0 && rv != EINVAL)
+ clib_unix_warning ("ioctl(VFIO_IOMMU_MAP_DMA) pool '%s'", pool_name);
+ }
+
+ return 0;
+}
+
clib_error_t *
dpdk_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
unsigned socket_id)
dpdk_main_t *dm = &dpdk_main;
struct rte_mempool *rmp;
dpdk_mempool_private_t priv;
- vlib_physmem_region_t *pr;
vlib_physmem_region_index_t pri;
+ clib_error_t *error = 0;
u8 *pool_name;
- unsigned elt_size;
- u32 size, obj_size;
- i32 i, ret;
+ u32 elt_size, i;
vec_validate_aligned (dm->pktmbuf_pools, socket_id, CLIB_CACHE_LINE_BYTES);
VLIB_BUFFER_HDR_SIZE /* priv size */ +
VLIB_BUFFER_PRE_DATA_SIZE + VLIB_BUFFER_DATA_SIZE; /*data room size */
- obj_size = rte_mempool_calc_obj_size (elt_size, 0, 0);
- size = rte_mempool_xmem_size (num_mbufs, obj_size, 21);
-
- clib_error_t *error = 0;
- error = vlib_physmem_region_alloc (vm, (char *) pool_name, size, socket_id,
- 0, &pri);
- if (error)
- clib_error_report (error);
-
- pr = vlib_physmem_get_region (vm, pri);
+ error =
+ dpdk_pool_create (vm, pool_name, elt_size, num_mbufs,
+ sizeof (dpdk_mempool_private_t), 512, socket_id,
+ &rmp, &pri);
- priv.mbp_priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
- VLIB_BUFFER_DATA_SIZE;
- priv.mbp_priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;
+ vec_free (pool_name);
-#if 0
- /* Check that pg_shift parameter is valid. */
- if (pg_shift > MEMPOOL_PG_SHIFT_MAX)
- {
- rte_errno = EINVAL;
- return NULL;
- }
-#endif
- rmp = rte_mempool_create_empty ((char *) pool_name, /* pool name */
- num_mbufs, /* number of mbufs */
- elt_size, 512, /* cache size */
- sizeof (dpdk_mempool_private_t), /* private data size */
- socket_id, 0); /* flags */
- if (rmp)
+ if (!error)
{
- rte_mempool_set_ops_byname (rmp, RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
+ priv.mbp_priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
+ VLIB_BUFFER_DATA_SIZE;
+ priv.mbp_priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;
/* call the mempool priv initializer */
rte_pktmbuf_pool_init (rmp, &priv);
- ret = rte_mempool_populate_phys_tab (rmp, pr->mem, pr->page_table,
- pr->n_pages, pr->log2_page_size,
- NULL, NULL);
- if (ret == (i32) rmp->size)
- {
- /* call the object initializers */
- rte_mempool_obj_iter (rmp, rte_pktmbuf_init, 0);
-
- dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
- privp->buffer_pool_index = vlib_buffer_add_physmem_region (vm, pri);
+ /* call the object initializers */
+ rte_mempool_obj_iter (rmp, rte_pktmbuf_init, 0);
- dm->pktmbuf_pools[socket_id] = rmp;
+ dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
+ privp->buffer_pool_index = vlib_buffer_add_physmem_region (vm, pri);
- return 0;
- }
+ dm->pktmbuf_pools[socket_id] = rmp;
- rte_mempool_free (rmp);
+ return 0;
}
- vec_free (pool_name);
+ clib_error_report (error);
/* no usable pool for this socket, try to use pool from another one */
for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
}
#endif
+static clib_error_t *
+dpdk_buffer_init (vlib_main_t * vm)
+{
+ dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+
+ vec_validate_aligned (dbm->ptd, tm->n_vlib_mains - 1,
+ CLIB_CACHE_LINE_BYTES);
+
+ dbm->vfio_container_fd = -1;
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (dpdk_buffer_init);
+
/* *INDENT-OFF* */
VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
- .vlib_buffer_alloc_cb = &dpdk_buffer_alloc,
- .vlib_buffer_alloc_from_free_list_cb = &dpdk_buffer_alloc_from_free_list,
+ .vlib_buffer_fill_free_list_cb = &dpdk_buffer_fill_free_list,
.vlib_buffer_free_cb = &dpdk_buffer_free,
.vlib_buffer_free_no_next_cb = &dpdk_buffer_free_no_next,
.vlib_packet_template_init_cb = &dpdk_packet_template_init,
/* *INDENT-ON* */
#if __x86_64__
-vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx512;
-vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx2;
-vlib_buffer_alloc_from_free_list_cb_t __clib_weak
- dpdk_buffer_alloc_from_free_list_avx512;
-vlib_buffer_alloc_from_free_list_cb_t __clib_weak
- dpdk_buffer_alloc_from_free_list_avx2;
-vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_cb_avx512;
-vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_cb_avx2;
-vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_cb_avx512;
-vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_cb_avx2;
+vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx512;
+vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx2;
+vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx512;
+vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx2;
+vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx512;
+vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx2;
static void __clib_constructor
dpdk_input_multiarch_select (void)
{
vlib_buffer_callbacks_t *cb = &__dpdk_buffer_callbacks;
- if (dpdk_buffer_alloc_avx512 && clib_cpu_supports_avx512f ())
+ if (dpdk_buffer_fill_free_list_avx512 && clib_cpu_supports_avx512f ())
{
- cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx512;
- cb->vlib_buffer_alloc_from_free_list_cb =
- dpdk_buffer_alloc_from_free_list_avx512;
- cb->vlib_buffer_free_cb = dpdk_buffer_free_cb_avx512;
- cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_cb_avx512;
+ cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx512;
+ cb->vlib_buffer_free_cb = dpdk_buffer_free_avx512;
+ cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx512;
}
- else if (dpdk_buffer_alloc_avx2 && clib_cpu_supports_avx2 ())
+ else if (dpdk_buffer_fill_free_list_avx2 && clib_cpu_supports_avx2 ())
{
- cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx2;
- cb->vlib_buffer_alloc_from_free_list_cb =
- dpdk_buffer_alloc_from_free_list_avx2;
- cb->vlib_buffer_free_cb = dpdk_buffer_free_cb_avx2;
- cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_cb_avx2;
+ cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx2;
+ cb->vlib_buffer_free_cb = dpdk_buffer_free_avx2;
+ cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx2;
}
}
#endif
Code Review / vpp.git / blobdiff