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-rw-r--r--src/vppinfra/bitmap.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/vppinfra/bitmap.h b/src/vppinfra/bitmap.h
index 0e94d028ee3..4f340079d36 100644
--- a/src/vppinfra/bitmap.h
+++ b/src/vppinfra/bitmap.h
@@ -735,6 +735,42 @@ clib_bitmap_next_clear (uword * ai, uword i)
return i;
}
+/** unformat an any sized hexadecimal bitmask into a bitmap
+
+ uword * bitmap;
+ rv = unformat ("%U", unformat_bitmap_mask, &bitmap);
+
+ Standard unformat_function_t arguments
+
+ @param input - pointer an unformat_input_t
+ @param va - varargs list comprising a single uword **
+ @returns 1 on success, 0 on failure
+*/
+static inline uword
+unformat_bitmap_mask (unformat_input_t * input, va_list * va)
+{
+ u8 *v = 0; /* hexadecimal vector */
+ uword **bitmap_return = va_arg (*va, uword **);
+ uword *bitmap = 0;
+
+ if (unformat (input, "%U", unformat_hex_string, &v))
+ {
+ int i, s = vec_len (v) - 1; /* 's' for significance or shift */
+
+ /* v[0] holds the most significant byte */
+ for (i = 0; s >= 0; i++, s--)
+ bitmap = clib_bitmap_set_multiple (bitmap,
+ s * BITS (v[i]), v[i],
+ BITS (v[i]));
+
+ vec_free (v);
+ *bitmap_return = bitmap;
+ return 1;
+ }
+
+ return 0;
+}
+
/** unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" )
uword * bitmap;