netdev - RE: [net-next v2 2/8] i40e: transmit, receive, and napi

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Date:	Fri, 23 Aug 2013 18:37:53 +0000
From:	"Nelson, Shannon" <shannon.nelson@...el.com>
To:	Stefan Assmann <sassmann@...nic.de>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
CC:	"davem@...emloft.net" <davem@...emloft.net>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>
Subject: RE: [net-next v2 2/8] i40e: transmit, receive, and napi

> -----Original Message-----
> From: Stefan Assmann [mailto:sassmann@...nic.de]
> Sent: Friday, August 23, 2013 5:42 AM
> To: Kirsher, Jeffrey T
> Cc: davem@...emloft.net; Brandeburg, Jesse; netdev@...r.kernel.org;
> gospo@...hat.com; Nelson, Shannon; Waskiewicz Jr, Peter P; e1000-
> devel@...ts.sourceforge.net
> Subject: Re: [net-next v2 2/8] i40e: transmit, receive, and napi
> 
> On 23.08.2013 04:15, Jeff Kirsher wrote:
> > From: Jesse Brandeburg <jesse.brandeburg@...el.com>
> >
> > This patch contains the transmit, receive, and napi routines, as well
> > as ancillary routines.
> >
> > This file is code that is (will be) shared between the VF and PF
> > drivers.
> 
> Just some small nitpicks.

Thanks again.

> 
> > diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> > new file mode 100644
> > index 0000000..ceafef0
> > --- /dev/null
> > +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> 
> [...]
> 
> > +static void i40e_receive_skb(struct i40e_ring *rx_ring,
> > +			     struct sk_buff *skb, u16 vlan_tag)
> > +{
> > +	struct i40e_vsi *vsi = rx_ring->vsi;
> > +	struct i40e_q_vector *q_vector = rx_ring->q_vector;
> > +	u64 flags = vsi->back->flags;
> > +
> > +	if (vlan_tag & VLAN_VID_MASK)
> > +		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
> 
> Suggesting __constant_htons instead of htons here.

We'll follow Dave's comment on this.

> 
> [...]
> 
> > +static int i40e_tso(struct i40e_ring *tx_ring, struct sk_buff *skb,
> > +		    u32 tx_flags, __be16 protocol, u8 *hdr_len,
> > +		    u64 *cd_type_cmd_tso_mss, u32 *cd_tunneling)
> > +{
> 
> [...]
> 
> > +	cd_cmd = I40E_TX_CTX_DESC_TSO;
> > +	cd_tso_len = skb->len - *hdr_len;
> > +	cd_mss = skb_shinfo(skb)->gso_size;
> > +	*cd_type_cmd_tso_mss |= ((u64)cd_cmd	<<
> I40E_TXD_CTX_QW1_CMD_SHIFT)
> > +			     | ((u64)cd_tso_len
> > +				<< I40E_TXD_CTX_QW1_TSO_LEN_SHIFT)
> > +			     | ((u64)cd_mss     << I40E_TXD_CTX_QW1_MSS_SHIFT);
> 
> Should use either tab or space after cd_cmd, cd_mss but please don't mix
> them.

Thanks, we'll tweak those.

> 
>   Stefan
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