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authorRaju Rangoju <Raju.Rangoju@amd.com>2023-11-22 00:44:34 +0530
committerPaolo Abeni <pabeni@redhat.com>2023-11-23 13:47:23 +0100
commit7121205d5330c6a3cb3379348886d47c77b78d06 (patch)
tree49f309b3c9c1c8d8e62a6d384a619971069f66ce /drivers/net/ethernet/amd/xgbe/xgbe-drv.c
parent676ec53844cbdf2f47e68a076cdff7f0ec6cbe3f (diff)
amd-xgbe: handle the corner-case during tx completion
The existing implementation uses software logic to accumulate tx completions until the specified time (1ms) is met and then poll them. However, there exists a tiny gap which leads to a race between resetting and checking the tx_activate flag. Due to this the tx completions are not reported to upper layer and tx queue timeout kicks-in restarting the device. To address this, introduce a tx cleanup mechanism as part of the periodic maintenance process. Fixes: c5aa9e3b8156 ("amd-xgbe: Initial AMD 10GbE platform driver") Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-drv.c')
-rw-r--r--drivers/net/ethernet/amd/xgbe/xgbe-drv.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 614c0278419b..6b73648b3779 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -682,10 +682,24 @@ static void xgbe_service(struct work_struct *work)
static void xgbe_service_timer(struct timer_list *t)
{
struct xgbe_prv_data *pdata = from_timer(pdata, t, service_timer);
+ struct xgbe_channel *channel;
+ unsigned int i;
queue_work(pdata->dev_workqueue, &pdata->service_work);
mod_timer(&pdata->service_timer, jiffies + HZ);
+
+ if (!pdata->tx_usecs)
+ return;
+
+ for (i = 0; i < pdata->channel_count; i++) {
+ channel = pdata->channel[i];
+ if (!channel->tx_ring || channel->tx_timer_active)
+ break;
+ channel->tx_timer_active = 1;
+ mod_timer(&channel->tx_timer,
+ jiffies + usecs_to_jiffies(pdata->tx_usecs));
+ }
}
static void xgbe_init_timers(struct xgbe_prv_data *pdata)