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-rw-r--r--hicn-plugin/src/data_fwd.h54
1 files changed, 26 insertions, 28 deletions
diff --git a/hicn-plugin/src/data_fwd.h b/hicn-plugin/src/data_fwd.h
index d95f564c3..96d8399e4 100644
--- a/hicn-plugin/src/data_fwd.h
+++ b/hicn-plugin/src/data_fwd.h
@@ -24,23 +24,25 @@
* @file data_fwd.h
*
* This is the node encoutered by data packets after the hicn-data-pcslookup.
- * This node has two goals: 1) clone/copy the vlib buffer as many time as the number
- * of faces stored in the pit entry, 2) store a clone/copy of the vlib buffer in the CS.
- * Unless there are memory issue (no more vlib buffer available to perform cloning/copy),
- * a single vlib buffer received might results in several vlib buffer sent to the next
- * vlib node (hicn4-iface-output or hicn6-iface-output).
+ * This node has two goals: 1) clone/copy the vlib buffer as many time as the
+ * number of faces stored in the pit entry, 2) store a clone/copy of the vlib
+ * buffer in the CS. Unless there are memory issue (no more vlib buffer
+ * available to perform cloning/copy), a single vlib buffer received might
+ * results in several vlib buffer sent to the next vlib node
+ * (hicn4-iface-output or hicn6-iface-output).
*
- * It must be noted that cloning is possible only if the lentgh of the data pointed by
- * the vlib buffer is at least 256 bytes. This is due to an imposition in the vpp source
- * code. In all the other cases the vlib buffer is copied. Cloning is performed by advancing
- * the vlib buffer of 256 bytes and a new vlib buffer is created and chained in from of the received
- * buffer. Additionally, the 256 bytes removed (advanced) from the received vlib buffer are
- * copied in the head vlib buffer. In case of multiple cloning for the same vlib buffer, this
- * mechanism allows us to have a different hICN header for each clone (+ the same additional bytes
- * due to the vpp restriction on cloning).
+ * It must be noted that cloning is possible only if the lentgh of the data
+ * pointed by the vlib buffer is at least 256 bytes. This is due to an
+ * imposition in the vpp source code. In all the other cases the vlib buffer is
+ * copied. Cloning is performed by advancing the vlib buffer of 256 bytes and a
+ * new vlib buffer is created and chained in from of the received buffer.
+ * Additionally, the 256 bytes removed (advanced) from the received vlib buffer
+ * are copied in the head vlib buffer. In case of multiple cloning for the same
+ * vlib buffer, this mechanism allows us to have a different hICN header for
+ * each clone (+ the same additional bytes due to the vpp restriction on
+ * cloning).
*/
-
/* Trace context struct */
typedef struct
{
@@ -76,7 +78,7 @@ typedef enum
* less than the number requested or zero
*/
always_inline u16
-vlib_buffer_clone_256_2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
+vlib_buffer_clone_256_2 (vlib_main_t *vm, u32 src_buffer, u32 *buffers,
u16 n_buffers, u16 head_end_offset)
{
u16 i;
@@ -97,8 +99,8 @@ vlib_buffer_clone_256_2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
}
return n_buffers;
}
- n_buffers = vlib_buffer_alloc_from_pool (vm, buffers, n_buffers,
- s->buffer_pool_index);
+ n_buffers =
+ vlib_buffer_alloc_from_pool (vm, buffers, n_buffers, s->buffer_pool_index);
for (i = 0; i < n_buffers; i++)
{
@@ -107,8 +109,8 @@ vlib_buffer_clone_256_2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
d->current_length = head_end_offset;
d->trace_handle = s->trace_handle;
- d->total_length_not_including_first_buffer = s->current_length -
- head_end_offset;
+ d->total_length_not_including_first_buffer =
+ s->current_length - head_end_offset;
if (PREDICT_FALSE (s->flags & VLIB_BUFFER_NEXT_PRESENT))
{
d->total_length_not_including_first_buffer +=
@@ -149,7 +151,7 @@ vlib_buffer_clone_256_2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
* less than the number requested or zero
*/
always_inline u16
-vlib_buffer_clone2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
+vlib_buffer_clone2 (vlib_main_t *vm, u32 src_buffer, u32 *buffers,
u16 n_buffers, u16 head_end_offset)
{
vlib_buffer_t *s = vlib_get_buffer (vm, src_buffer);
@@ -174,11 +176,9 @@ vlib_buffer_clone2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
vlib_buffer_t *copy;
/* Ok to call the original vlib_buffer_copy. */
copy = vlib_buffer_copy (vm, s);
- n_cloned += vlib_buffer_clone (vm,
- vlib_get_buffer_index (vm, copy),
- buffers,
- n_buffers - n_clone_src,
- head_end_offset);
+ n_cloned +=
+ vlib_buffer_clone (vm, vlib_get_buffer_index (vm, copy), buffers,
+ n_buffers - n_clone_src, head_end_offset);
n_buffers -= n_cloned;
}
/*
@@ -195,9 +195,7 @@ vlib_buffer_clone2 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
* complexity to the code, especially because we need to add 1 to
* ref_count when the packet is cloned.
*/
- n_cloned += vlib_buffer_clone_256_2 (vm,
- src_buffer,
- (buffers + n_cloned),
+ n_cloned += vlib_buffer_clone_256_2 (vm, src_buffer, (buffers + n_cloned),
n_buffers, head_end_offset);
s->ref_count += (tmp_ref_count - 1);