If there are packets in hardware when changing the spped or duplex, it may cause hardware hang up.
This patchset adds the code for waiting chip to clean the all pkts(TX & RX) in chip when the driver uses the function named "adjust link". This patchset cleans the pkts as follows: 1) close rx of chip, close tx of protocol stack. 2) wait rcb, ppe, mac to clean. 3) adjust link 4) open rx of chip, open tx of protocol stack. --- Change log: V1 -> V2: 1, remove a patch according to the comment reported by Andrew Lunn. --- Peng Li (2): net: hns: add the code for cleaning pkt in chip net: hns: add netif_carrier_off before change speed and duplex drivers/net/ethernet/hisilicon/hns/hnae.h | 2 + drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 67 +++++++++++++++++++++- drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c | 36 ++++++++++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c | 44 ++++++++++++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h | 8 +++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 29 ++++++++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h | 3 + drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c | 23 ++++++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h | 1 + drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 23 ++++++++ drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h | 1 + drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h | 1 + drivers/net/ethernet/hisilicon/hns/hns_enet.c | 21 ++++++- drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 2 + 14 files changed, 257 insertions(+), 4 deletions(-) -- 2.9.3
