From: David Miller <davem@davemloft.net>
To: jeffrey.t.kirsher@intel.com
Cc: netdev@vger.kernel.org, hawk@comx.dk
Subject: Re: [net-next-2.6 PATCH 2/4] igb: Implement reading of reg RQDPC (Receive Queue Drop Packet Count)
Date: Tue, 26 May 2009 20:36:15 -0700 (PDT) [thread overview]
Message-ID: <20090526.203615.66405421.davem@davemloft.net> (raw)
In-Reply-To: <20090526235030.28231.35089.stgit@localhost.localdomain>
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Tue, 26 May 2009 16:50:31 -0700
> Based on the previous patches from Jesper Dangaard Brouer <hawk@comx.dk>
>
> Implement reading the per queue drop stats register
> RQDPC (Receive Queue Drop Packet Count). It counts the number of
> packets dropped by a queue due to lack of descriptors available.
>
> Notice RQDPC (Receive Queue Drop Packet Count) stats only gets
> incremented, if the DROP_EN bit it set (in the SRRCTL register
> for that queue). If DROP_EN bit is NOT set, then the some what
> equivalent count is stored in RNBC (not per queue basis).
>
> The RQDPC register is only 12 bit, thus the precision might
> suffer due to overrun in-netween the watchdog polling interval.
>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Applied.
next prev parent reply other threads:[~2009-05-27 3:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-26 23:50 [net-next-2.6 PATCH 1/4] igb: add RQDPC (Receive Queue Drop Packet Count) register macro Jeff Kirsher
2009-05-26 23:50 ` [net-next-2.6 PATCH 2/4] igb: Implement reading of reg RQDPC (Receive Queue Drop Packet Count) Jeff Kirsher
2009-05-27 3:36 ` David Miller [this message]
2009-05-26 23:50 ` [net-next-2.6 PATCH 3/4] igb: Record host memory receive overflow in net_stats Jeff Kirsher
2009-05-27 3:36 ` David Miller
2009-05-26 23:51 ` [net-next-2.6 PATCH 4/4] igb/e1000e: update PSSR_MDIX value to reflect correct bit Jeff Kirsher
2009-05-27 3:36 ` David Miller
2009-05-27 3:36 ` [net-next-2.6 PATCH 1/4] igb: add RQDPC (Receive Queue Drop Packet Count) register macro David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090526.203615.66405421.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=hawk@comx.dk \
--cc=jeffrey.t.kirsher@intel.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).