linux_dsm_epyc7002/drivers/net/ethernet/hisilicon
Salil Mehta 436667d2e1 net: hns3: Add VF Reset device state and its handling
This introduces the hclge device reset states of "requested" and
"pending" and also its handling in context to Reset Service Task.

Device gets into requested state because of any VF reset request
asserted from upper layers, for example due to watchdog timeout
expiration. Requested state would result in eventually forwarding
the VF reset request to PF which would actually reset the VF.

Device will get into pending state if:
1. VF receives the acknowledgement from PF for the VF reset
   request it originally sent to PF.
2. Reset Service Task detects that after asserting VF reset for
   certain times the data-path is not working and device then
   decides to assert full VF reset(this means also resetting the
   PCIe interface).
3. PF intimates the VF that it has undergone reset.
Pending state would result in VF to poll for hardware reset
completion status and then resetting the stack/enet layer, which
in turn means reinitializing the ring management/enet layer.

Note: we would be adding support of 3. later as a separate patch.
This decision should not affect VF reset as its event handling
is generic in nature.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22 15:29:03 -04:00
..
hns net: hns: Fix for variable may be used uninitialized warnings 2018-01-22 15:36:44 -05:00
hns3 net: hns3: Add VF Reset device state and its handling 2018-03-22 15:29:03 -04:00
hip04_eth.c locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() 2017-10-25 11:01:08 +02:00
hisi_femac.c drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
hix5hd2_gmac.c drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
hns_mdio.c net: hns: Fix a wrong op phy C45 code 2017-07-08 11:05:21 +01:00
Kconfig net: hns3: Add HNS3 VF driver to kernel build framework 2017-12-15 10:55:34 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00