From: Damjan Marion <damarion@cisco.com>
Date: Thu, 8 Sep 2022 16:59:03 +0000 (+0200)
Subject: vlib: add vlib_frame_bitmap_is_bit_set
X-Git-Tag: v23.02-rc0~27
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=51a7e44172512dab3ab70fce1426fd774a4edffe;p=vpp.git

vlib: add vlib_frame_bitmap_is_bit_set

Type: improvement
Change-Id: I2f3fab893a10b060f91b07ee17b8727d241830ea
Signed-off-by: Damjan Marion <dmarion@me.com>
---

diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h
index 86722705b66..45a36fef1be 100644
--- a/src/vlib/node_funcs.h
+++ b/src/vlib/node_funcs.h
@@ -1443,6 +1443,14 @@ vlib_frame_bitmap_count_set_bits (uword *bmp)
   return count;
 }
 
+static_always_inline uword
+vlib_frame_bitmap_is_bit_set (uword *bmp, uword bit_index)
+{
+  bmp += bit_index / uword_bits;
+  bit_index %= uword_bits;
+  return (bmp[0] >> bit_index) & 1;
+}
+
 static_always_inline int
 vlib_frame_bitmap_find_first_set (uword *bmp)
 {