net: hns: adds limitation for debug port mtu
If mtu for debug port is set more than 1500, it may cause that packets are dropped by ppe. So maximum value for debug port should be 1500. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
da3488bbde
commit
211b138403
|
@ -470,6 +470,9 @@ int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu)
|
|||
u32 max_frm = AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver) ?
|
||||
MAC_MAX_MTU : MAC_MAX_MTU_V2;
|
||||
|
||||
if (mac_cb->mac_type == HNAE_PORT_DEBUG)
|
||||
max_frm = MAC_MAX_MTU_DBG;
|
||||
|
||||
if ((new_mtu < MAC_MIN_MTU) || (new_frm > max_frm) ||
|
||||
(new_frm > HNS_RCB_RING_MAX_BD_PER_PKT * buf_size))
|
||||
return -EINVAL;
|
||||
|
|
|
@ -28,6 +28,7 @@ struct dsaf_device;
|
|||
#define MAC_MAX_MTU 9600
|
||||
#define MAC_MAX_MTU_V2 9728
|
||||
#define MAC_MIN_MTU 68
|
||||
#define MAC_MAX_MTU_DBG MAC_DEFAULT_MTU
|
||||
|
||||
#define MAC_DEFAULT_PAUSE_TIME 0xff
|
||||
|
||||
|
|
Loading…
Reference in a new issue