From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH RFC 11/11] net/mlx5e: XDP TX xmit more
Date: Thu, 08 Sep 2016 11:52:59 -0700
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Cc: Tom Herbert <tom@herbertland.com>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Saeed Mahameed <saeedm@dev.mellanox.co.il>,
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        Alexei Starovoitov <alexei.starovoitov@gmail.com>,
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        Eric Dumazet <edumazet@google.com>,
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To: Rick Jones <rick.jones2@hpe.com>
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On Thu, 2016-09-08 at 11:48 -0700, Rick Jones wrote:

> With small packets and the "default" ring size for this NIC/driver 
> combination, is the BQL large enough that the ring fills before one hits 
> the BQL?

It depends on how TX completion (NAPI handler) is implemented in the
driver.

Say how many packets can be dequeued by each invocation.

Drivers have a lot of variations there.