On 11/6/2020 3:51 AM, Lijun Ou wrote:
From: Hongbo Zheng <zhenghong...@huawei.com>

According to bit operator reliability style, variables in
the right expression participating int bit operation
cannot be of unsigned type.

Assuming this is talking about BIT() ("#define BIT(nr) (1UL << (nr))"),
is this description says, in the "a << b", 'b' can't be unsigned?

The code below does the opposite, "int i" -> "uint32_t i", even though there is a typo in above description, why 'b' can't be signed?
It can't be negative, but not sure if is it a problem to have it signed.


Also only first change in this patch seems related to the patch title and the description, rest looks related to signed / unsigned comparison fixes, if so can you separate them into their patch with proper description please?


Signed-off-by: Hongbo Zheng <zhenghong...@huawei.com>
Signed-off-by: Lijun Ou <ouli...@huawei.com>
---
  drivers/net/hns3/hns3_ethdev_vf.c     |  2 +-
  drivers/net/hns3/hns3_rxtx_vec_neon.h | 11 +++++------
  2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c 
b/drivers/net/hns3/hns3_ethdev_vf.c
index 6f71cd6..2e9bfda 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -1331,7 +1331,7 @@ hns3vf_get_tc_info(struct hns3_hw *hw)
  {
        uint8_t resp_msg;
        int ret;
-       int i;
+       uint32_t i;
ret = hns3_send_mbx_msg(hw, HNS3_MBX_GET_TCINFO, 0, NULL, 0,
                                true, &resp_msg, sizeof(resp_msg));
diff --git a/drivers/net/hns3/hns3_rxtx_vec_neon.h 
b/drivers/net/hns3/hns3_rxtx_vec_neon.h
index 8d7721b..fe525de 100644
--- a/drivers/net/hns3/hns3_rxtx_vec_neon.h
+++ b/drivers/net/hns3/hns3_rxtx_vec_neon.h
@@ -89,13 +89,12 @@ hns3_desc_parse_field(struct hns3_rx_queue *rxq,
                      struct hns3_desc *rxdp,
                      uint32_t   bd_vld_num)
  {
-       uint32_t l234_info, ol_info, bd_base_info;
+       uint32_t l234_info, ol_info, bd_base_info, cksum_err, i;

Not sure combining more variable declarations into same line is good idea, why not have their own lines?

        struct rte_mbuf *pkt;
        uint32_t retcode = 0;
-       uint32_t cksum_err;
-       int ret, i;
+       int ret;
- for (i = 0; i < (int)bd_vld_num; i++) {
+       for (i = 0; i < bd_vld_num; i++) {
                pkt = sw_ring[i].mbuf;
/* init rte_mbuf.rearm_data last 64-bit */
@@ -129,9 +128,9 @@ hns3_recv_burst_vec(struct hns3_rx_queue *__restrict rxq,
        uint16_t rx_id = rxq->next_to_use;
        struct hns3_entry *sw_ring = &rxq->sw_ring[rx_id];
        struct hns3_desc *rxdp = &rxq->rx_ring[rx_id];
-       uint32_t bd_valid_num, parse_retcode;
+       uint32_t bd_valid_num, parse_retcode, pos;
        uint16_t nb_rx = 0;
-       int pos, offset;
+       int offset;
/* mask to shuffle from desc to mbuf's rx_descriptor_fields1 */
        uint8x16_t shuf_desc_fields_msk = {


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