Subject: Re: [EXTERNAL] Re: [PATCH v11 06/10] net: ti: icssg-prueth: Add ICSSG ethernet driver

From: Jakub Kicinski <[email-masked]>
Date: Wed, 26 Jul 2023 08:37:07 -0700

On Wed, 26 Jul 2023 16:01:23 +0530 Md Danish Anwar wrote:
> I think MAX_SKB_FRAGS is OK. If the available pool = MAX_SKB_FRAGS we should be
> able to wake the queue.

MAX_SKB_FRAGS only counts frags and you also need space to map the head, no?

In general we advise to wait until there's at least 2 * MAX_SKB_FRAGS
to avoid frequent sleep/wake cycles. But IDK how long your queue is,
maybe it's too much. 

> No I don't think any lock is required here. emac_set_port_state() aquires lock
> before updating port status. Also emac_ndo_set_rx_mode_work() is scheduled by a
> singlethreaded workqueue.

if (netif_running()) outside of any locks is usually a red flag, but if
you're confident it's fine it's fine :)