diff options
Diffstat (limited to 'src/plugins/dpdk/buffer.c')
| -rw-r--r-- | src/plugins/dpdk/buffer.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c index 6add0630d85..a1c1ea1ca46 100644 --- a/src/plugins/dpdk/buffer.c +++ b/src/plugins/dpdk/buffer.c @@ -27,9 +27,11 @@ STATIC_ASSERT (VLIB_BUFFER_PRE_DATA_SIZE == RTE_PKTMBUF_HEADROOM, "VLIB_BUFFER_PRE_DATA_SIZE must be equal to RTE_PKTMBUF_HEADROOM"); +extern struct rte_mbuf *dpdk_mbuf_template_by_pool_index; #ifndef CLIB_MARCH_VARIANT struct rte_mempool **dpdk_mempool_by_buffer_pool_index = 0; struct rte_mempool **dpdk_no_cache_mempool_by_buffer_pool_index = 0; +struct rte_mbuf *dpdk_mbuf_template_by_pool_index = 0; clib_error_t * dpdk_buffer_pool_init (vlib_main_t * vm, vlib_buffer_pool_t * bp) @@ -117,6 +119,14 @@ dpdk_buffer_pool_init (vlib_main_t * vm, vlib_buffer_pool_t * bp) /* call the object initializers */ rte_mempool_obj_iter (mp, rte_pktmbuf_init, 0); + /* create mbuf header tempate from the first buffer in the pool */ + vec_validate_aligned (dpdk_mbuf_template_by_pool_index, bp->index, + CLIB_CACHE_LINE_BYTES); + clib_memcpy (vec_elt_at_index (dpdk_mbuf_template_by_pool_index, bp->index), + rte_mbuf_from_vlib_buffer (vlib_buffer_ptr_from_index + (buffer_mem_start, *bp->buffers, + 0)), sizeof (struct rte_mbuf)); + /* *INDENT-OFF* */ vec_foreach (bi, bp->buffers) { @@ -256,7 +266,6 @@ dpdk_ops_vpp_enqueue_no_cache_one (vlib_main_t * vm, struct rte_mempool *old, if (clib_atomic_sub_fetch (&b->ref_count, 1) == 0) { u32 bi = vlib_get_buffer_index (vm, b); - mb->pool = new; vlib_buffer_copy_template (b, bt); vlib_buffer_pool_put (vm, bt->buffer_pool_index, &bi, 1); return; @@ -298,6 +307,37 @@ CLIB_MULTIARCH_FN (dpdk_ops_vpp_enqueue_no_cache) (struct rte_mempool * cmp, CLIB_MARCH_FN_REGISTRATION (dpdk_ops_vpp_enqueue_no_cache); +static_always_inline void +dpdk_mbuf_init_from_template (struct rte_mbuf **mba, struct rte_mbuf *mt, + int count) +{ + /* Assumptions about rte_mbuf layout */ + STATIC_ASSERT_OFFSET_OF (struct rte_mbuf, buf_addr, 0); + STATIC_ASSERT_OFFSET_OF (struct rte_mbuf, buf_iova, 8); + STATIC_ASSERT_SIZEOF_ELT (struct rte_mbuf, buf_iova, 8); + STATIC_ASSERT_SIZEOF_ELT (struct rte_mbuf, buf_iova, 8); + STATIC_ASSERT_SIZEOF (struct rte_mbuf, 128); + + while (count--) + { + struct rte_mbuf *mb = mba[0]; + int i; + /* bytes 0 .. 15 hold buf_addr and buf_iova which we need to preserve */ + /* copy bytes 16 .. 31 */ + *((u8x16 *) mb + 1) = *((u8x16 *) mt + 1); + + /* copy bytes 32 .. 127 */ +#ifdef CLIB_HAVE_VEC256 + for (i = 1; i < 4; i++) + *((u8x32 *) mb + i) = *((u8x32 *) mt + i); +#else + for (i = 2; i < 8; i++) + *((u8x16 *) mb + i) = *((u8x16 *) mt + i); +#endif + mba++; + } +} + int CLIB_MULTIARCH_FN (dpdk_ops_vpp_dequeue) (struct rte_mempool * mp, void **obj_table, unsigned n) @@ -307,6 +347,7 @@ CLIB_MULTIARCH_FN (dpdk_ops_vpp_dequeue) (struct rte_mempool * mp, u32 bufs[batch_size], total = 0, n_alloc = 0; u8 buffer_pool_index = mp->pool_id; void **obj = obj_table; + struct rte_mbuf t = dpdk_mbuf_template_by_pool_index[buffer_pool_index]; while (n >= batch_size) { @@ -317,6 +358,7 @@ CLIB_MULTIARCH_FN (dpdk_ops_vpp_dequeue) (struct rte_mempool * mp, vlib_get_buffers_with_offset (vm, bufs, obj, batch_size, -(i32) sizeof (struct rte_mbuf)); + dpdk_mbuf_init_from_template ((struct rte_mbuf **) obj, &t, batch_size); total += batch_size; obj += batch_size; n -= batch_size; @@ -331,6 +373,7 @@ CLIB_MULTIARCH_FN (dpdk_ops_vpp_dequeue) (struct rte_mempool * mp, vlib_get_buffers_with_offset (vm, bufs, obj, n, -(i32) sizeof (struct rte_mbuf)); + dpdk_mbuf_init_from_template ((struct rte_mbuf **) obj, &t, n); } return 0; |