netdev - RE: [Intel-wired-lan] [PATCH iwl-next v9 3/6] igb: Introduce XSK data structures and helpers

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Message-ID: <PH0PR11MB514419E81D61FD0AC3704CF2E2482@PH0PR11MB5144.namprd11.prod.outlook.com>
Date: Sat, 26 Oct 2024 16:54:22 +0000
From: "Kuruvinakunnel, George" <george.kuruvinakunnel@...el.com>
To: Kurt Kanzenbach <kurt@...utronix.de>, "Nguyen, Anthony L"
	<anthony.l.nguyen@...el.com>, "Kitszel, Przemyslaw"
	<przemyslaw.kitszel@...el.com>
CC: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
	<daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, "John
 Fastabend" <john.fastabend@...il.com>, Richard Cochran
	<richardcochran@...il.com>, Sriram Yagnaraman
	<sriram.yagnaraman@...csson.com>, Benjamin Steinke
	<benjamin.steinke@...s-audio.com>, Sebastian Andrzej Siewior
	<bigeasy@...utronix.de>, "Fijalkowski, Maciej"
	<maciej.fijalkowski@...el.com>, "intel-wired-lan@...ts.osuosl.org"
	<intel-wired-lan@...ts.osuosl.org>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "bpf@...r.kernel.org" <bpf@...r.kernel.org>, Sriram
 Yagnaraman <sriram.yagnaraman@....tech>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v9 3/6] igb: Introduce XSK data
 structures and helpers

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Kurt Kanzenbach
> Sent: Friday, October 18, 2024 1:40 AM
> To: Nguyen, Anthony L <anthony.l.nguyen@...el.com>; Kitszel, Przemyslaw
> <przemyslaw.kitszel@...el.com>
> Cc: David S. Miller <davem@...emloft.net>; Eric Dumazet
> <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo Abeni
> <pabeni@...hat.com>; Alexei Starovoitov <ast@...nel.org>; Daniel
> Borkmann <daniel@...earbox.net>; Jesper Dangaard Brouer
> <hawk@...nel.org>; John Fastabend <john.fastabend@...il.com>; Richard
> Cochran <richardcochran@...il.com>; Sriram Yagnaraman
> <sriram.yagnaraman@...csson.com>; Benjamin Steinke
> <benjamin.steinke@...s-audio.com>; Sebastian Andrzej Siewior
> <bigeasy@...utronix.de>; Fijalkowski, Maciej <maciej.fijalkowski@...el.com>;
> intel-wired-lan@...ts.osuosl.org; netdev@...r.kernel.org;
> bpf@...r.kernel.org; Sriram Yagnaraman <sriram.yagnaraman@....tech>;
> Kurt Kanzenbach <kurt@...utronix.de>
> Subject: [Intel-wired-lan] [PATCH iwl-next v9 3/6] igb: Introduce XSK data
> structures and helpers
> 
> From: Sriram Yagnaraman <sriram.yagnaraman@....tech>
> 
> Add the following ring flag:
> - IGB_RING_FLAG_TX_DISABLED (when xsk pool is being setup)
> 
> Add a xdp_buff array for use with XSK receive batch API, and a pointer to
> xsk_pool in igb_adapter.
> 
> Add enable/disable functions for TX and RX rings.
> Add enable/disable functions for XSK pool.
> Add xsk wakeup function.
> 
> None of the above functionality will be active until
> NETDEV_XDP_ACT_XSK_ZEROCOPY is advertised in netdev->xdp_features.
> 
> Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@....tech>
> [Kurt: Add READ/WRITE_ONCE(), synchronize_net(),
>        remove IGB_RING_FLAG_AF_XDP_ZC]
> Signed-off-by: Kurt Kanzenbach <kurt@...utronix.de>
> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> ---
>  drivers/net/ethernet/intel/igb/Makefile   |   2 +-
>  drivers/net/ethernet/intel/igb/igb.h      |  13 +-
>  drivers/net/ethernet/intel/igb/igb_main.c |   9 ++
>  drivers/net/ethernet/intel/igb/igb_xsk.c  | 207
> ++++++++++++++++++++++++++++++
>  4 files changed, 229 insertions(+), 2 deletions(-)
> 

Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@...el.com>