From: Kejian Yan <yankej...@huawei.com> 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 <yankej...@huawei.com> Signed-off-by: Yisen Zhuang <yisen.zhu...@huawei.com> --- change log: PATCH V2: - use tabs instead of spaces to indent the value PATCH V1: - first submit Link: https://lkml.org/lkml/2016/3/21/217 --- drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c | 3 +++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c index 50237fb..a38084a 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c @@ -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; diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h index 7b47701..823b6e7 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h @@ -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 -- 1.9.1
