net: hns3: fix byte order conversion issue in hclge_dbg_fd_tcam_read()

[ Upstream commit efccf655e99b6907ca07a466924e91805892e7d3 ]

req1->tcam_data is defined as "u8 tcam_data[8]", and we convert it as
(u32 *) without considerring byte order conversion,
it may result in printing wrong data for tcam_data.

Convert tcam_data to (__le32 *) first to fix it.

Fixes: b5a0b70d77b9 ("net: hns3: refactor dump fd tcam of debugfs")
Signed-off-by: Hao Chen <chenhao418@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index 5cb8f1818e51c43776299f9e1683c8a1de7b160a..a1c59f4aae98842194a65d6f937a7bc6a1e8a37a 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -1517,7 +1517,7 @@ static int hclge_dbg_fd_tcam_read(struct hclge_dev *hdev, bool sel_x,
        struct hclge_desc desc[3];
        int pos = 0;
        int ret, i;
-       u32 *req;
+       __le32 *req;
 
        hclge_cmd_setup_basic_desc(&desc[0], HCLGE_OPC_FD_TCAM_OP, true);
        desc[0].flag |= cpu_to_le16(HCLGE_COMM_CMD_FLAG_NEXT);
@@ -1542,22 +1542,22 @@ static int hclge_dbg_fd_tcam_read(struct hclge_dev *hdev, bool sel_x,
                         tcam_msg.loc);
 
        /* tcam_data0 ~ tcam_data1 */
-       req = (u32 *)req1->tcam_data;
+       req = (__le32 *)req1->tcam_data;
        for (i = 0; i < 2; i++)
                pos += scnprintf(tcam_buf + pos, HCLGE_DBG_TCAM_BUF_SIZE - pos,
-                                "%08x\n", *req++);
+                                "%08x\n", le32_to_cpu(*req++));
 
        /* tcam_data2 ~ tcam_data7 */
-       req = (u32 *)req2->tcam_data;
+       req = (__le32 *)req2->tcam_data;
        for (i = 0; i < 6; i++)
                pos += scnprintf(tcam_buf + pos, HCLGE_DBG_TCAM_BUF_SIZE - pos,
-                                "%08x\n", *req++);
+                                "%08x\n", le32_to_cpu(*req++));
 
        /* tcam_data8 ~ tcam_data12 */
-       req = (u32 *)req3->tcam_data;
+       req = (__le32 *)req3->tcam_data;
        for (i = 0; i < 5; i++)
                pos += scnprintf(tcam_buf + pos, HCLGE_DBG_TCAM_BUF_SIZE - pos,
-                                "%08x\n", *req++);
+                                "%08x\n", le32_to_cpu(*req++));
 
        return ret;
 }