vlib: store buffer memory information in the buffer_main

Currently, buffer index is calculated as a offset to the physmem
region shifted by log2_cacheline size.

When DPDK is used we "hack" physmem data with information taken from
dpdk mempool. This makes physmem code not usable with DPDK.

This change makes buffer memory start and size independent of physmem
basically allowing physmem to be used when DPDK plugin is loaded.

Change-Id: Ieb399d398f147583b9baab467152a352d58c9c31
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 4 insertions, 65 deletions

diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c
index fd1d84153db..aa73eb6c008 100644
--- a/src/plugins/dpdk/buffer.c
+++ b/src/plugins/dpdk/buffer.c
@@ -431,7 +431,6 @@ vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
 			 unsigned socket_id)
 {
   dpdk_main_t *dm = &dpdk_main;
-  vlib_physmem_main_t *vpm = &vm->physmem_main;
   struct rte_mempool *rmp;
   int i;
 
@@ -453,63 +452,10 @@ vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
   if (rmp)
     {
       {
-	uword this_pool_end;
-	uword this_pool_start;
-	uword this_pool_size;
-	uword save_vpm_start, save_vpm_end, save_vpm_size;
 	struct rte_mempool_memhdr *memhdr;
 
-	this_pool_start = ~0;
-	this_pool_end = 0;
-
 	STAILQ_FOREACH (memhdr, &rmp->mem_list, next)
-	{
-	  if (((uword) (memhdr->addr + memhdr->len)) > this_pool_end)
-	    this_pool_end = (uword) (memhdr->addr + memhdr->len);
-	  if (((uword) memhdr->addr) < this_pool_start)
-	    this_pool_start = (uword) (memhdr->addr);
-	}
-	ASSERT (this_pool_start < ~0 && this_pool_end > 0);
-	this_pool_size = this_pool_end - this_pool_start;
-
-	if (CLIB_DEBUG > 1)
-	  {
-	    clib_warning ("%s: pool start %llx pool end %llx pool size %lld",
-			  pool_name, this_pool_start, this_pool_end,
-			  this_pool_size);
-	    clib_warning
-	      ("before: virtual.start %llx virtual.end %llx virtual.size %lld",
-	       vpm->virtual.start, vpm->virtual.end, vpm->virtual.size);
-	  }
-
-	save_vpm_start = vpm->virtual.start;
-	save_vpm_end = vpm->virtual.end;
-	save_vpm_size = vpm->virtual.size;
-
-	if ((this_pool_start < vpm->virtual.start) || vpm->virtual.start == 0)
-	  vpm->virtual.start = this_pool_start;
-	if (this_pool_end > vpm->virtual.end)
-	  vpm->virtual.end = this_pool_end;
-
-	vpm->virtual.size = vpm->virtual.end - vpm->virtual.start;
-
-	if (CLIB_DEBUG > 1)
-	  {
-	    clib_warning
-	      ("after: virtual.start %llx virtual.end %llx virtual.size %lld",
-	       vpm->virtual.start, vpm->virtual.end, vpm->virtual.size);
-	  }
-
-	/* check if fits into buffer index range */
-	if ((u64) vpm->virtual.size >
-	    ((u64) 1 << (32 + CLIB_LOG2_CACHE_LINE_BYTES)))
-	  {
-	    clib_warning ("physmem: virtual size out of range!");
-	    vpm->virtual.start = save_vpm_start;
-	    vpm->virtual.end = save_vpm_end;
-	    vpm->virtual.size = save_vpm_size;
-	    rmp = 0;
-	  }
+	  vlib_buffer_add_mem_range (vm, (uword) memhdr->addr, memhdr->len);
       }
       if (rmp)
 	{
@@ -564,7 +510,8 @@ buffer_state_validation_init (vlib_main_t * vm)
 VLIB_INIT_FUNCTION (buffer_state_validation_init);
 #endif
 
-static vlib_buffer_callbacks_t callbacks = {
+/* *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_free_cb = &dpdk_buffer_free,
@@ -572,15 +519,7 @@ static vlib_buffer_callbacks_t callbacks = {
   .vlib_packet_template_init_cb = &dpdk_packet_template_init,
   .vlib_buffer_delete_free_list_cb = &dpdk_buffer_delete_free_list,
 };
-
-static clib_error_t *
-dpdk_buffer_init (vlib_main_t * vm)
-{
-  vlib_buffer_cb_register (vm, &callbacks);
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (dpdk_buffer_init);
+/* *INDENT-ON* */
 
 /** @endcond */
 /*