@@ -467,8 +467,13 @@ int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu)
struct mac_driver *drv = hns_mac_get_drv(mac_cb);
u32 buf_size = mac_cb->dsaf_dev->buf_size;
u32 new_frm = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
+ u32 max_frm = AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver) ?
+ MAC_MAX_MTU : MAC_MAX_MTU_V2;
- if ((new_mtu < MAC_MIN_MTU) || (new_frm > MAC_MAX_MTU) ||
+ 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;
@@ -26,7 +26,9 @@ struct dsaf_device;
#define MAC_DEFAULT_MTU (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN + ETH_DATA_LEN)
#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
@@ -343,6 +343,9 @@ static void hns_ppe_init_hw(struct hns_ppe_cb *ppe_cb)
if (!AE_IS_VER1(dsaf_dev->dsaf_ver)) {
hns_ppe_set_vlan_strip(ppe_cb, 0);
+ dsaf_write_dev(ppe_cb, PPE_CFG_MAX_FRAME_LEN_REG,
+ HNS_PPEV2_MAX_FRAME_LEN);
+
/* set default RSS key in h/w */
hns_ppe_set_rss_key(ppe_cb, ppe_cb->rss_key);
@@ -30,6 +30,8 @@
#define HNS_PPEV2_RSS_KEY_SIZE 40 /* in bytes or 320 bits */
#define HNS_PPEV2_RSS_KEY_NUM (HNS_PPEV2_RSS_KEY_SIZE / sizeof(u32))
+#define HNS_PPEV2_MAX_FRAME_LEN 0X980
+
enum ppe_qid_mode {
PPE_QID_MODE0 = 0, /* fixed queue id mode */
PPE_QID_MODE1, /* switch:128VM non switch:6Port/4VM/4TC */
As the User Manual describes, maximum value are 9728 for service ports and 1500 for debug ports, not always 9600. So it needs to be configured to right value for the different port. The max frame len of ppe needs to be set to the right as well. Signed-off-by: Kejian Yan <yankejian@huawei.com> --- drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c | 7 ++++++- drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h | 2 ++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c | 3 +++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h | 2 ++ 4 files changed, 13 insertions(+), 1 deletion(-)