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authorDamjan Marion <damarion@cisco.com>2019-01-31 12:29:39 +0100
committerDamjan Marion <damarion@cisco.com>2019-01-31 12:33:16 +0100
commit24dcbe45209dfdbcf2f1851aa443e696fac050f2 (patch)
tree95613b567a5df9d6e73e95ade88689a6c0b5d0a2 /src/plugins
parentf6e9b014cbd0ba5a757565a6a0179065d7236463 (diff)
buffers: reinitialize metadata, add additional validation
- DPDK overwrites metadata as part of rte_pktmbuf_init(...) so we need reinitialize it - additional checks added to ensure ref_count is never < 1 Change-Id: Ida336f81c4723e8f2e0ad4a70cb7b1ecfff978a0 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/dpdk/buffer.c38
1 files changed, 25 insertions, 13 deletions
diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c
index 73310eff95a..21340e5cf01 100644
--- a/src/plugins/dpdk/buffer.c
+++ b/src/plugins/dpdk/buffer.c
@@ -42,6 +42,7 @@ struct rte_mempool **dpdk_no_cache_mempool_by_buffer_pool_index = 0;
clib_error_t *
dpdk_buffer_pool_init (vlib_main_t * vm, vlib_buffer_pool_t * bp)
{
+ uword buffer_mem_start = vm->buffer_main->buffer_mem_start;
struct rte_mempool *mp, *nmp;
dpdk_mempool_private_t priv;
enum rte_iova_mode iova_mode;
@@ -88,24 +89,35 @@ dpdk_buffer_pool_init (vlib_main_t * vm, vlib_buffer_pool_t * bp)
iova_mode = rte_eal_iova_mode ();
/* populate mempool object buffer header */
+ /* *INDENT-OFF* */
vec_foreach (bi, bp->buffers)
- {
- struct rte_mempool_objhdr *hdr;
- vlib_buffer_t *b = vlib_get_buffer (vm, *bi);
- struct rte_mbuf *mb = rte_mbuf_from_vlib_buffer (b);
- hdr = (struct rte_mempool_objhdr *) RTE_PTR_SUB (mb, sizeof (*hdr));
- hdr->mp = mp;
- hdr->iova = (iova_mode == RTE_IOVA_VA) ?
- pointer_to_uword (mb) : vlib_physmem_get_pa (vm, mb);
- STAILQ_INSERT_TAIL (&mp->elt_list, hdr, next);
- STAILQ_INSERT_TAIL (&nmp->elt_list, hdr, next);
- mp->populated_size++;
- nmp->populated_size++;
- }
+ {
+ struct rte_mempool_objhdr *hdr;
+ vlib_buffer_t *b = vlib_get_buffer (vm, *bi);
+ struct rte_mbuf *mb = rte_mbuf_from_vlib_buffer (b);
+ hdr = (struct rte_mempool_objhdr *) RTE_PTR_SUB (mb, sizeof (*hdr));
+ hdr->mp = mp;
+ hdr->iova = (iova_mode == RTE_IOVA_VA) ?
+ pointer_to_uword (mb) : vlib_physmem_get_pa (vm, mb);
+ STAILQ_INSERT_TAIL (&mp->elt_list, hdr, next);
+ STAILQ_INSERT_TAIL (&nmp->elt_list, hdr, next);
+ mp->populated_size++;
+ nmp->populated_size++;
+ }
+ /* *INDENT-ON* */
/* call the object initializers */
rte_mempool_obj_iter (mp, rte_pktmbuf_init, 0);
+ /* *INDENT-OFF* */
+ vec_foreach (bi, bp->buffers)
+ {
+ vlib_buffer_t *b;
+ b = vlib_buffer_ptr_from_index (buffer_mem_start, *bi, 0);
+ vlib_buffer_copy_template (b, &bp->buffer_template);
+ }
+ /* *INDENT-ON* */
+
/* map DMA pages if at least one physical device exists */
if (rte_eth_dev_count_avail ())
{