net: hns: fix length and page_offset overflow when CONFIG_ARM64_64K_PAGES

[ Upstream commit 3ed614dce3ca9912d22be215ff0f11104b69fe62 ]

When enable the config item "CONFIG_ARM64_64K_PAGES", the size of PAGE_SIZE
is 65536(64K). But the  type of length and page_offset are u16, they will
overflow. So change them to u32.

Fixes: 6fe6611ff275 ("net: add Hisilicon Network Subsystem hnae framework support")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index e093cbf26c8c50d22bf782741b382c96ca29e1d6..f9d68453c81d0ccdcc374f1d5ac4c0f46d0bf019 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -213,10 +213,10 @@ struct hnae_desc_cb {
 
        /* priv data for the desc, e.g. skb when use with ip stack*/
        void *priv;
-       u16 page_offset;
-       u16 reuse_flag;
+       u32 page_offset;
+       u32 length;     /* length of the buffer */
 
-       u16 length;     /* length of the buffer */
+       u16 reuse_flag;
 
        /* desc type, used by the ring user to mark the type of the priv data */
        u16 type;