linux-kernel - RE: [net-next v4 3/8] dpaa_eth: add support for S/G frames

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Message-ID: <BL2PR03MB5455FAD900C81B20022392CE62B0@BL2PR03MB545.namprd03.prod.outlook.com>
Date:	Tue, 3 Nov 2015 09:41:14 +0000
From:	Madalin-Cristian Bucur <madalin.bucur@...escale.com>
To:	Joe Perches <joe@...ches.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	Scott Wood <scottwood@...escale.com>,
	Liberman Igal <Igal.Liberman@...escale.com>,
	"Roy Pledge" <roy.pledge@...escale.com>,
	"ppc@...dchasers.com" <ppc@...dchasers.com>,
	"pebolle@...cali.nl" <pebolle@...cali.nl>,
	"joakim.tjernlund@...nsmode.se" <joakim.tjernlund@...nsmode.se>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: RE: [net-next v4 3/8] dpaa_eth: add support for S/G frames

> -----Original Message-----
> From: Joe Perches [mailto:joe@...ches.com]
> 
> On Mon, 2015-11-02 at 19:31 +0200, Madalin Bucur wrote:
> > Add support for Scater/Gather (S/G) frames. The FMan can place
> > the frame content into multiple buffers and provide a S/G Table
> > (SGT) into one first buffer with references to the others.
> 
> trivia: scatter
> 
> > diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c
> b/drivers/net/ethernet/freescale/dpaa/dpaa_eth_common.c
> []
> > @@ -1177,10 +1177,42 @@ void dpaa_eth_init_ports(struct mac_device
> *mac_dev,
> >  			      port_fqs->rx_defq, &buf_layout[RX]);
> >  }
> >
> > +void dpa_release_sgt(struct qm_sg_entry *sgt)
> > +{
> > +	struct dpa_bp *dpa_bp;
> > +	struct bm_buffer bmb[DPA_BUFF_RELEASE_MAX];
> 
> Where is "struct bm_buffer" defined?
> 

Thank you, I'll address this and the other observations you have sent.
The struct bm_buffer is defined in the Buffer Manager driver header file,
in include/soc/fsl/bman.h.

Madalin
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