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authorJohn Lo <loj@cisco.com>2019-08-07 19:30:29 -0400
committerJohn Lo <loj@cisco.com>2019-08-10 13:58:23 +0000
commit3d674e86b719a876be15f05b7ef9cb635717016e (patch)
tree72e33ede10228847f9a704d08b1bd46d5ad70a4e /src
parent28d86217bfee01f02b3d21751add572e6bdcc040 (diff)
vlib: fix vlib_buffer_copy to preserve buffer flags bit
Make vlib_buffer_copy() preserve buffer flags bit the same way as that of vlib_buffer_clone() so both are consistent. Type: fix Signed-off-by: John Lo <loj@cisco.com> Change-Id: I6c32aa1e88724b482ce2439d82019e690311b664 (cherry picked from commit 8ed2d524aa401a89547a1e059528f8a34bb8895f)
Diffstat (limited to 'src')
-rw-r--r--src/vlib/buffer_funcs.h11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/vlib/buffer_funcs.h b/src/vlib/buffer_funcs.h
index 8091d83729c..bb090f2c195 100644
--- a/src/vlib/buffer_funcs.h
+++ b/src/vlib/buffer_funcs.h
@@ -954,13 +954,18 @@ vlib_buffer_free_from_ring_no_next (vlib_main_t * vm, u32 * ring, u32 start,
int vlib_buffer_add_data (vlib_main_t * vm, u32 * buffer_index, void *data,
u32 n_data_bytes);
+/* Define vlib_buffer and vnet_buffer flags bits preserved for copy/clone */
+#define VLIB_BUFFER_COPY_CLONE_FLAGS_MASK \
+ (VLIB_BUFFER_NEXT_PRESENT | VLIB_BUFFER_TOTAL_LENGTH_VALID | \
+ VLIB_BUFFER_IS_TRACED | ~VLIB_BUFFER_FLAGS_ALL)
+
/* 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 flag_mask = VLIB_BUFFER_NEXT_PRESENT | VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ u32 flag_mask = VLIB_BUFFER_COPY_CLONE_FLAGS_MASK;
int i;
s = b;
@@ -1131,8 +1136,8 @@ vlib_buffer_clone_256 (vlib_main_t * vm, u32 src_buffer, u32 * buffers,
d->total_length_not_including_first_buffer +=
s->total_length_not_including_first_buffer;
}
- d->flags = s->flags | VLIB_BUFFER_NEXT_PRESENT;
- d->flags &= ~VLIB_BUFFER_EXT_HDR_VALID;
+ d->flags = (s->flags & VLIB_BUFFER_COPY_CLONE_FLAGS_MASK) |
+ VLIB_BUFFER_NEXT_PRESENT;
clib_memcpy_fast (d->opaque, s->opaque, sizeof (s->opaque));
clib_memcpy_fast (d->opaque2, s->opaque2, sizeof (s->opaque2));
clib_memcpy_fast (vlib_buffer_get_current (d),