diff options
| author |   Ong Boon Leong <boon.leong.ong@intel.com> | 2021-03-24 17:07:42 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-03-24 17:58:13 -0700 |
| commit | 5a5586112b929546e16029261a987c9197bfdfa2 (patch) | |
| tree | 322009b26c55b25e0232de6d251e8293335b82fd /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
| parent | 6lowpan: Fix some typos in nhc_udp.c (diff) | |
| download | linux-5a5586112b929546e16029261a987c9197bfdfa2.tar.xz linux-5a5586112b929546e16029261a987c9197bfdfa2.zip | |
net: stmmac: support FPE link partner hand-shaking procedure
In order to discover whether remote station supports frame preemption,
local station sends verify mPacket and expects response mPacket in
return from the remote station.
So, we add the functions to send and handle event when verify mPacket
and response mPacket are exchanged between the networked stations.
The mechanism to handle different FPE states between local and remote
station (link partner) is implemented using workqueue which starts a
task each time there is some sign of verify & response mPacket exchange
as check in FPE IRQ event. The task retries couple of times to try to
spot the states that both stations are ready to enter FPE ON. This allows
different end points to enable FPE at different time and verify-response
mPacket can happen asynchronously. Ultimately, the task will only turn
FPE ON when local station have both exchange response in both directions.
Thanks to Voon Weifeng for implementing the core functions for detecting
FPE events and send mPacket and phylink related change.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Co-developed-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Co-developed-by: Tan Tee Min <tee.min.tan@intel.com>
Signed-off-by: Tan Tee Min <tee.min.tan@intel.com>
Co-developed-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 375c503d2df8..4faad331a4ca 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -234,6 +234,12 @@ struct stmmac_priv { struct workqueue_struct *wq; struct work_struct service_task; + /* Workqueue for handling FPE hand-shaking */ + unsigned long fpe_task_state; + struct workqueue_struct *fpe_wq; + struct work_struct fpe_task; + char wq_name[IFNAMSIZ + 4]; + /* TC Handling */ unsigned int tc_entries_max; unsigned int tc_off_max; @@ -273,6 +279,7 @@ bool stmmac_eee_init(struct stmmac_priv *priv); int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt); int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size); int stmmac_bus_clks_config(struct stmmac_priv *priv, bool enabled); +void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable); #if IS_ENABLED(CONFIG_STMMAC_SELFTESTS) void stmmac_selftest_run(struct net_device *dev, |