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Date: Mon, 15 Jul 2019 10:01:04 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Biao Huang <biao.huang@...iatek.com>, "David S . Miller" <davem@...emloft.net>, Sasha Levin <sashal@...nel.org>, netdev@...r.kernel.org Subject: [PATCH AUTOSEL 5.1 063/219] net: stmmac: modify default value of tx-frames From: Biao Huang <biao.huang@...iatek.com> [ Upstream commit d2facb4b3983425f6776c24dd678a82dbe673773 ] the default value of tx-frames is 25, it's too late when passing tstamp to stack, then the ptp4l will fail: ptp4l -i eth0 -f gPTP.cfg -m ptp4l: selected /dev/ptp0 as PTP clock ptp4l: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l: port 1: link up ptp4l: timed out while polling for tx timestamp ptp4l: increasing tx_timestamp_timeout may correct this issue, but it is likely caused by a driver bug ptp4l: port 1: send peer delay response failed ptp4l: port 1: LISTENING to FAULTY on FAULT_DETECTED (FT_UNSPECIFIED) ptp4l tests pass when changing the tx-frames from 25 to 1 with ethtool -C option. It should be fine to set tx-frames default value to 1, so ptp4l will pass by default. Signed-off-by: Biao Huang <biao.huang@...iatek.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/net/ethernet/stmicro/stmmac/common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index 272b9ca66314..b069b3a2453b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -261,7 +261,7 @@ struct stmmac_safety_stats { #define STMMAC_COAL_TX_TIMER 1000 #define STMMAC_MAX_COAL_TX_TICK 100000 #define STMMAC_TX_MAX_FRAMES 256 -#define STMMAC_TX_FRAMES 25 +#define STMMAC_TX_FRAMES 1 /* Packets types */ enum packets_types { -- 2.20.1
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