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authorDmitry Valter <d-valter@yandex-team.com>2024-03-06 22:43:27 +0000
committerDamjan Marion <dmarion@0xa5.net>2024-04-08 11:46:30 +0000
commit3150250bc911b669b80dd4fe11c099430ceab172 (patch)
tree0c5a8059c3ad99b1fbf5f55c6c6cd83343953615 /src/vppinfra
parentdf47a0812ab9365b2de10a7aabcf4b29a255c088 (diff)
vppinfra: fix mask compare and compress OOB reads
Use mask_load_zero to avoid out-of-buffer reads in vectorized function versions. Type: fix Signed-off-by: Dmitry Valter <d-valter@yandex-team.com> Change-Id: I12bcb817ccf2db210c1c99fdfa444dc3f540035b
Diffstat (limited to 'src/vppinfra')
-rw-r--r--src/vppinfra/test/compress.c60
-rw-r--r--src/vppinfra/vector/compress.h116
-rw-r--r--src/vppinfra/vector/mask_compare.h154
3 files changed, 297 insertions, 33 deletions
diff --git a/src/vppinfra/test/compress.c b/src/vppinfra/test/compress.c
index 7b97f4c31af..083065f9bda 100644
--- a/src/vppinfra/test/compress.c
+++ b/src/vppinfra/test/compress.c
@@ -51,18 +51,21 @@ static compress_test_t tests[] = {
static clib_error_t *
test_clib_compress_u64 (clib_error_t *err)
{
- u64 src[513];
- u64 dst[513];
u32 i, j;
- for (i = 0; i < ARRAY_LEN (src); i++)
- src[i] = i;
-
for (i = 0; i < ARRAY_LEN (tests); i++)
{
compress_test_t *t = tests + i;
+ u64 src[t->n_elts];
+#ifdef CLIB_SANITIZE_ADDR
+ u64 dst[t->n_elts];
+#else /* CLIB_SANITIZE_ADDR */
+ u64 dst[513];
+#endif /* CLIB_SANITIZE_ADDR */
u64 *dp = dst;
u32 r;
+ for (j = 0; j < t->n_elts; j++)
+ src[j] = j;
for (j = 0; j < ARRAY_LEN (dst); j++)
dst[j] = 0xa5a5a5a5a5a5a5a5;
@@ -81,8 +84,10 @@ test_clib_compress_u64 (clib_error_t *err)
dp++;
}
+#ifndef CLIB_SANITIZE_ADDR
if (dst[dp - dst + 1] != 0xa5a5a5a5a5a5a5a5)
return clib_error_return (err, "buffer overrun in testcase %u", i);
+#endif /* CLIB_SANITIZE_ADDR */
if (dp - dst != r)
return clib_error_return (err, "wrong number of elts in testcase %u",
@@ -95,18 +100,21 @@ test_clib_compress_u64 (clib_error_t *err)
static clib_error_t *
test_clib_compress_u32 (clib_error_t *err)
{
- u32 src[513];
- u32 dst[513];
u32 i, j;
- for (i = 0; i < ARRAY_LEN (src); i++)
- src[i] = i;
-
for (i = 0; i < ARRAY_LEN (tests); i++)
{
compress_test_t *t = tests + i;
+ u32 src[t->n_elts];
+#ifdef CLIB_SANITIZE_ADDR
+ u32 dst[t->n_elts];
+#else /* CLIB_SANITIZE_ADDR */
+ u32 dst[513];
+#endif /* CLIB_SANITIZE_ADDR */
u32 *dp = dst;
u32 r;
+ for (j = 0; j < t->n_elts; j++)
+ src[j] = j;
for (j = 0; j < ARRAY_LEN (dst); j++)
dst[j] = 0xa5a5a5a5;
@@ -126,8 +134,10 @@ test_clib_compress_u32 (clib_error_t *err)
dp++;
}
+#ifndef CLIB_SANITIZE_ADDR
if (dst[dp - dst + 1] != 0xa5a5a5a5)
return clib_error_return (err, "buffer overrun in testcase %u", i);
+#endif /* CLIB_SANITIZE_ADDR */
if (dp - dst != r)
return clib_error_return (err, "wrong number of elts in testcase %u",
@@ -140,18 +150,21 @@ test_clib_compress_u32 (clib_error_t *err)
static clib_error_t *
test_clib_compress_u16 (clib_error_t *err)
{
- u16 src[513];
- u16 dst[513];
u32 i, j;
- for (i = 0; i < ARRAY_LEN (src); i++)
- src[i] = i;
-
for (i = 0; i < ARRAY_LEN (tests); i++)
{
compress_test_t *t = tests + i;
+ u16 src[t->n_elts];
+#ifdef CLIB_SANITIZE_ADDR
+ u16 dst[t->n_elts];
+#else /* CLIB_SANITIZE_ADDR */
+ u16 dst[513];
+#endif /* CLIB_SANITIZE_ADDR */
u16 *dp = dst;
u32 r;
+ for (j = 0; j < t->n_elts; j++)
+ src[j] = j;
for (j = 0; j < ARRAY_LEN (dst); j++)
dst[j] = 0xa5a5;
@@ -170,8 +183,10 @@ test_clib_compress_u16 (clib_error_t *err)
dp++;
}
+#ifndef CLIB_SANITIZE_ADDR
if (dst[dp - dst + 1] != 0xa5a5)
return clib_error_return (err, "buffer overrun in testcase %u", i);
+#endif /* CLIB_SANITIZE_ADDR */
if (dp - dst != r)
return clib_error_return (err, "wrong number of elts in testcase %u",
@@ -184,18 +199,21 @@ test_clib_compress_u16 (clib_error_t *err)
static clib_error_t *
test_clib_compress_u8 (clib_error_t *err)
{
- u8 src[513];
- u8 dst[513];
u32 i, j;
- for (i = 0; i < ARRAY_LEN (src); i++)
- src[i] = i;
-
for (i = 0; i < ARRAY_LEN (tests); i++)
{
compress_test_t *t = tests + i;
+ u8 src[t->n_elts];
+#ifdef CLIB_SANITIZE_ADDR
+ u8 dst[t->n_elts];
+#else /* CLIB_SANITIZE_ADDR */
+ u8 dst[513];
+#endif /* CLIB_SANITIZE_ADDR */
u8 *dp = dst;
u32 r;
+ for (j = 0; j < t->n_elts; j++)
+ src[j] = j;
for (j = 0; j < ARRAY_LEN (dst); j++)
dst[j] = 0xa5;
@@ -214,8 +232,10 @@ test_clib_compress_u8 (clib_error_t *err)
dp++;
}
+#ifndef CLIB_SANITIZE_ADDR
if (dst[dp - dst + 1] != 0xa5)
return clib_error_return (err, "buffer overrun in testcase %u", i);
+#endif /* CLIB_SANITIZE_ADDR */
if (dp - dst != r)
return clib_error_return (err, "wrong number of elts in testcase %u",
diff --git a/src/vppinfra/vector/compress.h b/src/vppinfra/vector/compress.h
index d2ed716ac8e..5429113984b 100644
--- a/src/vppinfra/vector/compress.h
+++ b/src/vppinfra/vector/compress.h
@@ -34,6 +34,37 @@ clib_compress_u64_x64 (u64 *dst, u64 *src, u64 mask)
return dst;
}
+static_always_inline u64 *
+clib_compress_u64_x64_masked (u64 *dst, u64 *src, u64 mask)
+{
+#if defined(CLIB_HAVE_VEC512_COMPRESS) && \
+ defined(CLIB_HAVE_VEC512_MASK_LOAD_STORE)
+ u64x8u *sv = (u64x8u *) src;
+ for (int i = 0; i < 8; i++)
+ {
+ u64x8u s = u64x8_mask_load_zero (&sv[i], mask);
+ u64x8_compress_store (s, mask, dst);
+ dst += _popcnt32 ((u8) mask);
+ mask >>= 8;
+ }
+#elif defined(CLIB_HAVE_VEC256_COMPRESS) && \
+ defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u64x4u *sv = (u64x4u *) src;
+ for (int i = 0; i < 16; i++)
+ {
+ u64x4u s = u64x4_mask_load_zero (&sv[i], mask);
+ u64x4_compress_store (s, mask, dst);
+ dst += _popcnt32 (((u8) mask) & 0x0f);
+ mask >>= 4;
+ }
+#else
+ u32 i;
+ foreach_set_bit_index (i, mask)
+ dst++[0] = src[i];
+#endif
+ return dst;
+}
+
/** \brief Compress array of 64-bit elemments into destination array based on
* mask
@@ -66,7 +97,9 @@ clib_compress_u64 (u64 *dst, u64 *src, u64 *mask, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return dst - dst0;
- return clib_compress_u64_x64 (dst, src, mask[0] & pow2_mask (n_elts)) - dst0;
+ return clib_compress_u64_x64_masked (dst, src,
+ mask[0] & pow2_mask (n_elts)) -
+ dst0;
}
static_always_inline u32 *
@@ -97,6 +130,38 @@ clib_compress_u32_x64 (u32 *dst, u32 *src, u64 mask)
return dst;
}
+static_always_inline u32 *
+clib_compress_u32_x64_masked (u32 *dst, u32 *src, u64 mask)
+{
+#if defined(CLIB_HAVE_VEC512_COMPRESS) && \
+ defined(CLIB_HAVE_VEC512_MASK_LOAD_STORE)
+ u32x16u *sv = (u32x16u *) src;
+ for (int i = 0; i < 4; i++)
+ {
+ u32x16u s = u32x16_mask_load_zero (&sv[i], mask);
+ u32x16_compress_store (s, mask, dst);
+ dst += _popcnt32 ((u16) mask);
+ mask >>= 16;
+ }
+
+#elif defined(CLIB_HAVE_VEC256_COMPRESS) && \
+ defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u32x8u *sv = (u32x8u *) src;
+ for (int i = 0; i < 8; i++)
+ {
+ u32x8u s = u32x8_mask_load_zero (&sv[i], mask);
+ u32x8_compress_store (s, mask, dst);
+ dst += _popcnt32 ((u8) mask);
+ mask >>= 8;
+ }
+#else
+ u32 i;
+ foreach_set_bit_index (i, mask)
+ dst++[0] = src[i];
+#endif
+ return dst;
+}
+
/** \brief Compress array of 32-bit elemments into destination array based on
* mask
@@ -129,7 +194,9 @@ clib_compress_u32 (u32 *dst, u32 *src, u64 *mask, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return dst - dst0;
- return clib_compress_u32_x64 (dst, src, mask[0] & pow2_mask (n_elts)) - dst0;
+ return clib_compress_u32_x64_masked (dst, src,
+ mask[0] & pow2_mask (n_elts)) -
+ dst0;
}
static_always_inline u16 *
@@ -151,6 +218,27 @@ clib_compress_u16_x64 (u16 *dst, u16 *src, u64 mask)
return dst;
}
+static_always_inline u16 *
+clib_compress_u16_x64_masked (u16 *dst, u16 *src, u64 mask)
+{
+#if defined(CLIB_HAVE_VEC512_COMPRESS_U8_U16) && \
+ defined(CLIB_HAVE_VEC512_MASK_LOAD_STORE)
+ u16x32u *sv = (u16x32u *) src;
+ for (int i = 0; i < 2; i++)
+ {
+ u16x32u s = u16x32_mask_load_zero (&sv[i], mask);
+ u16x32_compress_store (s, mask, dst);
+ dst += _popcnt32 ((u32) mask);
+ mask >>= 32;
+ }
+#else
+ u32 i;
+ foreach_set_bit_index (i, mask)
+ dst++[0] = src[i];
+#endif
+ return dst;
+}
+
/** \brief Compress array of 16-bit elemments into destination array based on
* mask
@@ -183,7 +271,9 @@ clib_compress_u16 (u16 *dst, u16 *src, u64 *mask, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return dst - dst0;
- return clib_compress_u16_x64 (dst, src, mask[0] & pow2_mask (n_elts)) - dst0;
+ return clib_compress_u16_x64_masked (dst, src,
+ mask[0] & pow2_mask (n_elts)) -
+ dst0;
}
static_always_inline u8 *
@@ -201,6 +291,23 @@ clib_compress_u8_x64 (u8 *dst, u8 *src, u64 mask)
return dst;
}
+static_always_inline u8 *
+clib_compress_u8_x64_masked (u8 *dst, u8 *src, u64 mask)
+{
+#if defined(CLIB_HAVE_VEC512_COMPRESS_U8_U16) && \
+ defined(CLIB_HAVE_VEC512_MASK_LOAD_STORE)
+ u8x64u *sv = (u8x64u *) src;
+ u8x64u s = u8x64_mask_load_zero (sv, mask);
+ u8x64_compress_store (s, mask, dst);
+ dst += _popcnt64 (mask);
+#else
+ u32 i;
+ foreach_set_bit_index (i, mask)
+ dst++[0] = src[i];
+#endif
+ return dst;
+}
+
/** \brief Compress array of 8-bit elemments into destination array based on
* mask
@@ -233,7 +340,8 @@ clib_compress_u8 (u8 *dst, u8 *src, u64 *mask, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return dst - dst0;
- return clib_compress_u8_x64 (dst, src, mask[0] & pow2_mask (n_elts)) - dst0;
+ return clib_compress_u8_x64_masked (dst, src, mask[0] & pow2_mask (n_elts)) -
+ dst0;
}
#endif
diff --git a/src/vppinfra/vector/mask_compare.h b/src/vppinfra/vector/mask_compare.h
index 92d5ca35474..fc72d7dac35 100644
--- a/src/vppinfra/vector/mask_compare.h
+++ b/src/vppinfra/vector/mask_compare.h
@@ -8,7 +8,7 @@
#include <vppinfra/memcpy.h>
static_always_inline u64
-clib_mask_compare_u16_x64 (u16 v, u16 *a, u32 n_elts)
+clib_mask_compare_u16_x64 (u16 v, u16 *a)
{
u64 mask = 0;
#if defined(CLIB_HAVE_VEC512)
@@ -47,6 +47,38 @@ clib_mask_compare_u16_x64 (u16 v, u16 *a, u32 n_elts)
(u64) i8x16_msb_mask (i8x16_pack (v8 == av[4], v8 == av[5])) << 32 |
(u64) i8x16_msb_mask (i8x16_pack (v8 == av[6], v8 == av[7])) << 48);
#else
+ for (int i = 0; i < 64; i++)
+ if (a[i] == v)
+ mask |= 1ULL << i;
+#endif
+ return mask;
+}
+
+static_always_inline u64
+clib_mask_compare_u16_x64_n (u16 v, u16 *a, u32 n_elts)
+{
+ u64 mask = 0;
+ CLIB_UNUSED (u64 data_mask) = pow2_mask (n_elts);
+#if defined(CLIB_HAVE_VEC512)
+ u16x32 v32 = u16x32_splat (v);
+ u16x32u *av = (u16x32u *) a;
+ mask = ((u64) u16x32_is_equal_mask (
+ u16x32_mask_load_zero (&av[0], data_mask), v32) |
+ (u64) u16x32_is_equal_mask (
+ u16x32_mask_load_zero (&av[1], data_mask >> 32), v32)
+ << 32);
+#elif defined(CLIB_HAVE_VEC256) && defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u16x16 v16 = u16x16_splat (v);
+ u16x16u *av = (u16x16u *) a;
+ i8x32 x;
+
+ x = i8x32_pack (v16 == u16x16_mask_load_zero (&av[0], data_mask),
+ v16 == u16x16_mask_load_zero (&av[1], data_mask >> 16));
+ mask = i8x32_msb_mask ((i8x32) u64x4_permute (x, 0, 2, 1, 3));
+ x = i8x32_pack (v16 == u16x16_mask_load_zero (&av[2], data_mask >> 32),
+ v16 == u16x16_mask_load_zero (&av[3], data_mask >> 48));
+ mask |= (u64) i8x32_msb_mask ((i8x32) u64x4_permute (x, 0, 2, 1, 3)) << 32;
+#else
for (int i = 0; i < n_elts; i++)
if (a[i] == v)
mask |= 1ULL << i;
@@ -68,7 +100,7 @@ clib_mask_compare_u16 (u16 v, u16 *a, u64 *mask, u32 n_elts)
{
while (n_elts >= 64)
{
- mask++[0] = clib_mask_compare_u16_x64 (v, a, 64);
+ mask++[0] = clib_mask_compare_u16_x64 (v, a);
n_elts -= 64;
a += 64;
}
@@ -76,11 +108,11 @@ clib_mask_compare_u16 (u16 v, u16 *a, u64 *mask, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return;
- mask[0] = clib_mask_compare_u16_x64 (v, a, n_elts) & pow2_mask (n_elts);
+ mask[0] = clib_mask_compare_u16_x64_n (v, a, n_elts) & pow2_mask (n_elts);
}
static_always_inline u64
-clib_mask_compare_u32_x64 (u32 v, u32 *a, u32 n_elts)
+clib_mask_compare_u32_x64 (u32 v, u32 *a)
{
u64 mask = 0;
#if defined(CLIB_HAVE_VEC512)
@@ -131,6 +163,57 @@ clib_mask_compare_u32_x64 (u32 v, u32 *a, u32 n_elts)
}
#else
+ for (int i = 0; i < 64; i++)
+ if (a[i] == v)
+ mask |= 1ULL << i;
+#endif
+ return mask;
+}
+
+static_always_inline u64
+clib_mask_compare_u32_x64_n (u32 v, u32 *a, u32 n_elts)
+{
+ u64 mask = 0;
+ CLIB_UNUSED (u64 data_mask) = pow2_mask (n_elts);
+#if defined(CLIB_HAVE_VEC512)
+ u32x16 v16 = u32x16_splat (v);
+ u32x16u *av = (u32x16u *) a;
+ mask = ((u64) u32x16_is_equal_mask (
+ u32x16_mask_load_zero (&av[0], data_mask), v16) |
+ (u64) u32x16_is_equal_mask (
+ u32x16_mask_load_zero (&av[1], data_mask >> 16), v16)
+ << 16 |
+ (u64) u32x16_is_equal_mask (
+ u32x16_mask_load_zero (&av[2], data_mask >> 32), v16)
+ << 32 |
+ (u64) u32x16_is_equal_mask (
+ u32x16_mask_load_zero (&av[3], data_mask >> 48), v16)
+ << 48);
+#elif defined(CLIB_HAVE_VEC256) && defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u32x8 v8 = u32x8_splat (v);
+ u32x8u *av = (u32x8u *) a;
+ u32x8 m = { 0, 4, 1, 5, 2, 6, 3, 7 };
+ i8x32 c;
+
+ c = i8x32_pack (
+ i16x16_pack (
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[0], data_mask)),
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[1], data_mask >> 8))),
+ i16x16_pack (
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[2], data_mask >> 16)),
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[3], data_mask >> 24))));
+ mask = i8x32_msb_mask ((i8x32) u32x8_permute ((u32x8) c, m));
+
+ c = i8x32_pack (
+ i16x16_pack (
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[4], data_mask >> 32)),
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[5], data_mask >> 40))),
+ i16x16_pack (
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[6], data_mask >> 48)),
+ (i32x8) (v8 == u32x8_mask_load_zero (&av[7], data_mask >> 56))));
+ mask |= (u64) i8x32_msb_mask ((i8x32) u32x8_permute ((u32x8) c, m)) << 32;
+ mask |= (u64) i8x32_msb_mask ((i8x32) u32x8_permute ((u32x8) c, m)) << 32;
+#else
for (int i = 0; i < n_elts; i++)
if (a[i] == v)
mask |= 1ULL << i;
@@ -152,7 +235,7 @@ clib_mask_compare_u32 (u32 v, u32 *a, u64 *bitmap, u32 n_elts)
{
while (n_elts >= 64)
{
- bitmap++[0] = clib_mask_compare_u32_x64 (v, a, 64);
+ bitmap++[0] = clib_mask_compare_u32_x64 (v, a);
n_elts -= 64;
a += 64;
}
@@ -160,11 +243,11 @@ clib_mask_compare_u32 (u32 v, u32 *a, u64 *bitmap, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return;
- bitmap[0] = clib_mask_compare_u32_x64 (v, a, n_elts) & pow2_mask (n_elts);
+ bitmap[0] = clib_mask_compare_u32_x64_n (v, a, n_elts) & pow2_mask (n_elts);
}
static_always_inline u64
-clib_mask_compare_u64_x64 (u64 v, u64 *a, u32 n_elts)
+clib_mask_compare_u64_x64 (u64 v, u64 *a)
{
u64 mask = 0;
#if defined(CLIB_HAVE_VEC512)
@@ -190,6 +273,59 @@ clib_mask_compare_u64_x64 (u64 v, u64 *a, u32 n_elts)
mask |= _pext_u64 (l | h << 32, 0x0101010101010101) << (i * 4);
}
#else
+ for (int i = 0; i < 64; i++)
+ if (a[i] == v)
+ mask |= 1ULL << i;
+#endif
+ return mask;
+}
+
+static_always_inline u64
+clib_mask_compare_u64_x64_n (u64 v, u64 *a, u32 n_elts)
+{
+ u64 mask = 0;
+ CLIB_UNUSED (u64 data_mask) = pow2_mask (n_elts);
+#if defined(CLIB_HAVE_VEC512)
+ u64x8 v8 = u64x8_splat (v);
+ u64x8u *av = (u64x8u *) a;
+ mask =
+ ((u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[0], data_mask), v8) |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[1], data_mask >> 8),
+ v8)
+ << 8 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[2], data_mask >> 16),
+ v8)
+ << 16 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[3], data_mask >> 24),
+ v8)
+ << 24 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[4], data_mask >> 32),
+ v8)
+ << 32 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[5], data_mask >> 40),
+ v8)
+ << 40 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[6], data_mask >> 48),
+ v8)
+ << 48 |
+ (u64) u64x8_is_equal_mask (u64x8_mask_load_zero (&av[7], data_mask >> 56),
+ v8)
+ << 56);
+
+#elif defined(CLIB_HAVE_VEC256) && defined(__BMI2__) && \
+ defined(CLIB_HAVE_VEC256_MASK_LOAD_STORE)
+ u64x4 v4 = u64x4_splat (v);
+ u64x4u *av = (u64x4u *) a;
+
+ for (int i = 0; i < 16; i += 2)
+ {
+ u64 l = u8x32_msb_mask (v4 == u64x4_mask_load_zero (&av[i], data_mask));
+ u64 h = u8x32_msb_mask (
+ v4 == u64x4_mask_load_zero (&av[i + 1], data_mask >> 4));
+ mask |= _pext_u64 (l | h << 32, 0x0101010101010101) << (i * 4);
+ data_mask >>= 8;
+ }
+#else
for (int i = 0; i < n_elts; i++)
if (a[i] == v)
mask |= 1ULL << i;
@@ -211,7 +347,7 @@ clib_mask_compare_u64 (u64 v, u64 *a, u64 *bitmap, u32 n_elts)
{
while (n_elts >= 64)
{
- bitmap++[0] = clib_mask_compare_u64_x64 (v, a, 64);
+ bitmap++[0] = clib_mask_compare_u64_x64 (v, a);
n_elts -= 64;
a += 64;
}
@@ -219,7 +355,7 @@ clib_mask_compare_u64 (u64 v, u64 *a, u64 *bitmap, u32 n_elts)
if (PREDICT_TRUE (n_elts == 0))
return;
- bitmap[0] = clib_mask_compare_u64_x64 (v, a, n_elts) & pow2_mask (n_elts);
+ bitmap[0] = clib_mask_compare_u64_x64_n (v, a, n_elts) & pow2_mask (n_elts);
}
#endif