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From: Marat Khalili <marat.khalili@huawei.com>
To: <stephen@networkplumber.org>, <jerinjacobk@gmail.com>,
	<mb@smartsharesystems.com>,
	Jack Bond-Preston <jack.bond-preston@foss.arm.com>
Cc: <dev@dpdk.org>, <stable@dpdk.org>, <konstantin.ananyev@huawei.com>
Subject: [PATCH v2 1/5] eal: variable first arguments of RTE_SHIFT_VALxx
Date: Tue, 16 Dec 2025 18:20:31 +0000	[thread overview]
Message-ID: <20251216182036.77869-2-marat.khalili@huawei.com> (raw)
In-Reply-To: <20251216182036.77869-1-marat.khalili@huawei.com>

Macros RTE_SHIFT_VAL32 and RTE_SHIFT_VAL64 were implemented by applying
UINT32_C or UINT64_C correspondingly to its first argument. As a
consequence first argument had to be a constant. Replace UINT32_C and
UINT64_C with casts to uint32_t and uint64_t to allow these arguments be
variable. For constants the result should be the same.

(Yes, technically UINT64_C promotes to uint_least64_t, not uint64_t, but
I think most users of RTE_SHIFT_VAL64 expect the result to be uint64_t.)

Signed-off-by: Marat Khalili <marat.khalili@huawei.com>
---
 lib/eal/include/rte_bitops.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/eal/include/rte_bitops.h b/lib/eal/include/rte_bitops.h
index 2d1b9d281c..aa6ac73abb 100644
--- a/lib/eal/include/rte_bitops.h
+++ b/lib/eal/include/rte_bitops.h
@@ -51,7 +51,7 @@ extern "C" {
  * @param nr
  *   The shift number in range of 0 to (32 - width of val).
  */
-#define RTE_SHIFT_VAL32(val, nr) (UINT32_C(val) << (nr))
+#define RTE_SHIFT_VAL32(val, nr) ((uint32_t)(val) << (nr))
 
 /**
  * Get the uint64_t shifted value.
@@ -61,7 +61,7 @@ extern "C" {
  * @param nr
  *   The shift number in range of 0 to (64 - width of val).
  */
-#define RTE_SHIFT_VAL64(val, nr) (UINT64_C(val) << (nr))
+#define RTE_SHIFT_VAL64(val, nr) ((uint64_t)(val) << (nr))
 
 /**
  * Generate a contiguous 32-bit mask
-- 
2.43.0


  reply	other threads:[~2025-12-16 18:21 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20251110153046.63518-1-marat.khalili@huawei.com>
2025-12-16 18:20 ` [PATCH v2 0/5] bpf: simple tests and fixes Marat Khalili
2025-12-16 18:20   ` Marat Khalili [this message]
2025-12-17  9:25     ` [PATCH v2 1/5] eal: variable first arguments of RTE_SHIFT_VALxx Morten Brørup
2025-12-16 18:20   ` [PATCH v2 2/5] bpf: fix signed shift overflows in ARM JIT Marat Khalili
2025-12-17  9:49     ` Morten Brørup
2025-12-16 18:20   ` [PATCH v2 3/5] bpf: disallow empty program Marat Khalili
2025-12-18  0:54     ` Stephen Hemminger
2025-12-17  8:58       ` Marat Khalili
2025-12-16 18:20   ` [PATCH v2 4/5] bpf: make add/subtract one program validate Marat Khalili
2025-12-16 18:20   ` [PATCH v2 5/5] bpf: fix BPF validation w/ conditional jump first Marat Khalili
2025-12-17 18:01   ` [PATCH v3 0/6] bpf: simple tests and fixes Marat Khalili
2025-12-17 18:01     ` [PATCH v3 1/6] eal: variable first arguments of RTE_SHIFT_VALxx Marat Khalili
2025-12-17 18:01     ` [PATCH v3 2/6] bpf: fix signed shift overflows in ARM JIT Marat Khalili
2025-12-17 18:01     ` [PATCH v3 3/6] bpf: mark ARM opcodes with UINT32_C Marat Khalili
2025-12-17 18:01     ` [PATCH v3 4/6] bpf: disallow empty program Marat Khalili
2025-12-17 18:01     ` [PATCH v3 5/6] bpf: make add/subtract one program validate Marat Khalili
2025-12-17 18:01     ` [PATCH v3 6/6] bpf: fix BPF validation w/ conditional jump first Marat Khalili

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