lkml.org 
[lkml]   [2021]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net 1/1] net: stmmac: fix TSO and TBS feature enabling during driver open
Date
TSO and TBS cannot co-exist and current implementation requires two
fixes:

1) stmmac_open() does not need to call stmmac_enable_tbs() because
the MAC is reset in stmmac_init_dma_engine() anyway.
2) Inside stmmac_hw_setup(), we should call stmmac_enable_tso() for
TX Q that is _not_ configured for TBS.

Fixes: 579a25a854d4 ("net: stmmac: Initial support for TBS")
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 4749bd0af160..c6f24abf6432 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2757,8 +2757,15 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)

/* Enable TSO */
if (priv->tso) {
- for (chan = 0; chan < tx_cnt; chan++)
+ for (chan = 0; chan < tx_cnt; chan++) {
+ struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
+
+ /* TSO and TBS cannot co-exist */
+ if (tx_q->tbs & STMMAC_TBS_AVAIL)
+ continue;
+
stmmac_enable_tso(priv, priv->ioaddr, 1, chan);
+ }
}

/* Enable Split Header */
@@ -2850,9 +2857,8 @@ static int stmmac_open(struct net_device *dev)
struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en;

+ /* Setup per-TXQ tbs flag before TX descriptor alloc */
tx_q->tbs |= tbs_en ? STMMAC_TBS_AVAIL : 0;
- if (stmmac_enable_tbs(priv, priv->ioaddr, tbs_en, chan))
- tx_q->tbs &= ~STMMAC_TBS_AVAIL;
}

ret = alloc_dma_desc_resources(priv);
--
2.25.1
\
 
 \ /
  Last update: 2021-04-21 11:10    [W:0.038 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site