dpdk: remove rte_mbuf modifications at many places in the code

[vpp.git] / vlib / vlib / buffer_funcs.h

diff --git a/vlib/vlib/buffer_funcs.h b/vlib/vlib/buffer_funcs.h
index 8b80be1..60e0e28 100644 (file)
--- a/vlib/vlib/buffer_funcs.h
+++ b/vlib/vlib/buffer_funcs.h
@@ -42,18 +42,6 @@
 
 #include <vppinfra/hash.h>
 
-#if DPDK == 1
-#undef always_inline           // dpdk and clib use conflicting always_inline macros.
-#include <rte_config.h>
-#include <rte_mbuf.h>
-
-#if CLIB_DEBUG > 0
-#define always_inline static inline
-#else
-#define always_inline static inline __attribute__ ((__always_inline__))
-#endif
-#endif
-
 /** \file
     vlib buffer access methods.
 */
@@ -75,7 +63,7 @@ vlib_get_buffer (vlib_main_t * vm, u32 buffer_index)
 /** \brief Translate buffer pointer into buffer index
 
     @param vm - (vlib_main_t *) vlib main data structure pointer
-    @param b - (void *) buffer pointer
+    @param p - (void *) buffer pointer
     @return - (u32) buffer index
 */
 always_inline u32
@@ -135,7 +123,7 @@ vlib_buffer_index_length_in_chain (vlib_main_t * vm, u32 bi)
 /** \brief Copy buffer contents to memory
 
     @param vm - (vlib_main_t *) vlib main data structure pointer
-    @param bi - (u32) buffer index
+    @param buffer_index - (u32) buffer index
     @param contents - (u8 *) memory, <strong>must be large enough</strong>
     @return - (uword) length of buffer chain
 */
@@ -244,14 +232,6 @@ vlib_buffer_set_known_state (vlib_main_t * vm,
 u8 *vlib_validate_buffer (vlib_main_t * vm, u32 buffer_index,
                          uword follow_chain);
 
-/* Validate an array of buffers.  As above. */
-u8 *vlib_validate_buffers (vlib_main_t * vm,
-                          u32 * buffers,
-                          uword next_buffer_stride,
-                          uword n_buffers,
-                          vlib_buffer_known_state_t known_state,
-                          uword follow_chain);
-
 #endif /* DPDK == 0 */
 
 clib_error_t *vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
@@ -422,6 +402,57 @@ u32 vlib_buffer_add_data (vlib_main_t * vm,
                          u32 free_list_index,
                          u32 buffer_index, void *data, u32 n_data_bytes);
 
+/* duplicate all buffers in chain */
+always_inline vlib_buffer_t *
+vlib_buffer_copy (vlib_main_t * vm, vlib_buffer_t * b)
+{
+  vlib_buffer_t *s, *d, *fd;
+  uword n_alloc, n_buffers = 1;
+  u32 *new_buffers = 0;
+  u32 flag_mask = VLIB_BUFFER_NEXT_PRESENT | VLIB_BUFFER_TOTAL_LENGTH_VALID;
+  int i;
+
+  s = b;
+  while (s->flags & VLIB_BUFFER_NEXT_PRESENT)
+    {
+      n_buffers++;
+      s = vlib_get_buffer (vm, s->next_buffer);
+    }
+
+  vec_validate (new_buffers, n_buffers - 1);
+  n_alloc = vlib_buffer_alloc (vm, new_buffers, n_buffers);
+  ASSERT (n_alloc == n_buffers);
+
+  /* 1st segment */
+  s = b;
+  fd = d = vlib_get_buffer (vm, new_buffers[0]);
+  clib_memcpy (vlib_buffer_get_current (d),
+              vlib_buffer_get_current (s), s->current_length);
+  d->current_data = s->current_data;
+  d->current_length = s->current_length;
+  d->flags = s->flags & flag_mask;
+  d->total_length_not_including_first_buffer =
+    s->total_length_not_including_first_buffer;
+  clib_memcpy (d->opaque, s->opaque, sizeof (s->opaque));
+
+  /* next segments */
+  for (i = 1; i < n_buffers; i++)
+    {
+      /* previous */
+      d->next_buffer = new_buffers[i];
+      /* current */
+      s = vlib_get_buffer (vm, s->next_buffer);
+      d = vlib_get_buffer (vm, new_buffers[i]);
+      d->current_data = s->current_data;
+      d->current_length = s->current_length;
+      clib_memcpy (vlib_buffer_get_current (d),
+                  vlib_buffer_get_current (s), s->current_length);
+      d->flags = s->flags & flag_mask;
+    }
+
+  return fd;
+}
+
 /*
  * vlib_buffer_chain_* functions provide a way to create long buffers.
  * When DPDK is enabled, the 'hidden' DPDK header is taken care of transparently.
@@ -435,11 +466,6 @@ vlib_buffer_chain_init (vlib_buffer_t * first)
   first->current_length = 0;
   first->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
   first->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
-#if DPDK == 1
-  struct rte_mbuf *mb = rte_mbuf_from_vlib_buffer (first);
-  rte_pktmbuf_reset (mb);
-  mb->data_off = VLIB_BUFFER_PRE_DATA_SIZE + first->current_data;
-#endif
 }
 
 /* The provided next_bi buffer index is appended to the end of the packet. */
@@ -453,19 +479,6 @@ vlib_buffer_chain_buffer (vlib_main_t * vm,
   last->flags |= VLIB_BUFFER_NEXT_PRESENT;
   next_buffer->current_length = 0;
   next_buffer->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
-#if DPDK == 1
-  struct rte_mbuf *mb;
-  mb = rte_mbuf_from_vlib_buffer (first);
-  mb->nb_segs++;
-
-  mb = rte_mbuf_from_vlib_buffer (last);
-  mb->next = rte_mbuf_from_vlib_buffer (next_buffer);
-
-  mb = rte_mbuf_from_vlib_buffer (next_buffer);
-  mb->data_len = 0;
-  mb->data_off = VLIB_BUFFER_PRE_DATA_SIZE + next_buffer->current_data;
-  mb->next = 0;
-#endif
   return next_buffer;
 }
 
@@ -480,12 +493,6 @@ vlib_buffer_chain_increase_length (vlib_buffer_t * first,
   last->current_length += len;
   if (first != last)
     first->total_length_not_including_first_buffer += len;
-#if DPDK == 1
-  struct rte_mbuf *mb_first = rte_mbuf_from_vlib_buffer (first);
-  struct rte_mbuf *mb_last = rte_mbuf_from_vlib_buffer (last);
-  mb_first->pkt_len += len;
-  mb_last->data_len += len;
-#endif
 }
 
 /* Copy data to the end of the packet and increases its length.