net/ice/base: align macro names to specification

[dpdk.git] / drivers / net / ice / base / ice_bitops.h

diff --git a/drivers/net/ice/base/ice_bitops.h b/drivers/net/ice/base/ice_bitops.h
index 3954896..b786bf7 100644 (file)
--- a/drivers/net/ice/base/ice_bitops.h
+++ b/drivers/net/ice/base/ice_bitops.h
@@ -449,4 +449,49 @@ ice_cmp_bitmap(ice_bitmap_t *bmp1, ice_bitmap_t *bmp2, u16 size)
        return true;
 }
 
+/**
+ * ice_bitmap_from_array32 - copies u32 array source into bitmap destination
+ * @dst: the destination bitmap
+ * @src: the source u32 array
+ * @size: size of the bitmap (in bits)
+ *
+ * This function copies the src bitmap stored in an u32 array into the dst
+ * bitmap stored as an ice_bitmap_t.
+ */
+static inline void
+ice_bitmap_from_array32(ice_bitmap_t *dst, u32 *src, u16 size)
+{
+       u32 remaining_bits, i;
+
+#define BITS_PER_U32   (sizeof(u32) * BITS_PER_BYTE)
+       /* clear bitmap so we only have to set when iterating */
+       ice_zero_bitmap(dst, size);
+
+       for (i = 0; i < (u32)(size / BITS_PER_U32); i++) {
+               u32 bit_offset = i * BITS_PER_U32;
+               u32 entry = src[i];
+               u32 j;
+
+               for (j = 0; j < BITS_PER_U32; j++) {
+                       if (entry & BIT(j))
+                               ice_set_bit((u16)(j + bit_offset), dst);
+               }
+       }
+
+       /* still need to check the leftover bits (i.e. if size isn't evenly
+        * divisible by BITS_PER_U32
+        **/
+       remaining_bits = size % BITS_PER_U32;
+       if (remaining_bits) {
+               u32 bit_offset = i * BITS_PER_U32;
+               u32 entry = src[i];
+               u32 j;
+
+               for (j = 0; j < remaining_bits; j++) {
+                       if (entry & BIT(j))
+                               ice_set_bit((u16)(j + bit_offset), dst);
+               }
+       }
+}
+
 #endif /* _ICE_BITOPS_H_ */