From: Lorenzo Bianconi <lorenzo@kernel•org>
To: Yonghong Song <yhs@meta•com>
Cc: bpf@vger•kernel.org, netdev@vger•kernel.org, ast@kernel•org,
daniel@iogearbox•net, andrii@kernel•org, davem@davemloft•net,
kuba@kernel•org, hawk@kernel•org, pabeni@redhat•com,
edumazet@google•com, toke@redhat•com, memxor@gmail•com,
alardam@gmail•com, saeedm@nvidia•com, anthony.l.nguyen@intel•com,
gospo@broadcom•com, vladimir.oltean@nxp•com, nbd@nbd•name,
john@phrozen•org, leon@kernel•org, simon.horman@corigine•com,
aelior@marvell•com, christophe.jaillet@wanadoo•fr,
ecree.xilinx@gmail•com, mst@redhat•com, bjorn@kernel•org,
magnus.karlsson@intel•com, maciej.fijalkowski@intel•com,
intel-wired-lan@lists•osuosl.org, lorenzo.bianconi@redhat•com
Subject: Re: [RFC v2 bpf-next 3/7] xsk: add usage of XDP features flags
Date: Wed, 18 Jan 2023 00:34:01 +0100 [thread overview]
Message-ID: <Y8cwaVPDG/CN/JsU@lore-desk> (raw)
In-Reply-To: <5e20044c-6057-e5c7-624b-a1373c30fc12@meta.com>
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>
>
> On 1/14/23 7:54 AM, Lorenzo Bianconi wrote:
> > From: Marek Majtyka <alardam@gmail•com>
> >
> > Change necessary condition check for XSK from ndo functions to
> > xdp features flags.
> >
> > Signed-off-by: Marek Majtyka <alardam@gmail•com>
> > Signed-off-by: Lorenzo Bianconi <lorenzo@kernel•org>
> > ---
> > net/xdp/xsk_buff_pool.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
> > index ed6c71826d31..2e6fa082142a 100644
> > --- a/net/xdp/xsk_buff_pool.c
> > +++ b/net/xdp/xsk_buff_pool.c
> > @@ -178,8 +178,7 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
> > /* For copy-mode, we are done. */
> > return 0;
> > - if (!netdev->netdev_ops->ndo_bpf ||
> > - !netdev->netdev_ops->ndo_xsk_wakeup) {
> > + if ((netdev->xdp_features & NETDEV_XDP_ACT_ZC) != NETDEV_XDP_ACT_ZC) {
>
> Maybe:
> if (!(netdev->xdp_features & NETDEV_XDP_ACT_ZC))
I would say it not equivalent since:
NETDEV_XDP_ACT_ZC = 0x5f
and we want the device supports all the ZC requested features. Agree?
Regards,
Lorenzo
> ?
>
> > err = -EOPNOTSUPP;
> > goto err_unreg_pool;
> > }
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next prev parent reply other threads:[~2023-01-18 0:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-14 15:54 [RFC v2 bpf-next 0/7] xdp: introduce xdp-feature support Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 1/7] netdev-genl: create a simple family for netdev stuff Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 2/7] drivers: net: turn on XDP features Lorenzo Bianconi
2023-01-17 21:29 ` Niklas Söderlund
2023-01-17 21:58 ` Toke Høiland-Jørgensen
2023-01-17 22:05 ` Niklas Söderlund
2023-01-17 22:15 ` Toke Høiland-Jørgensen
2023-01-17 22:29 ` Niklas Söderlund
2023-01-17 22:42 ` Toke Høiland-Jørgensen
2023-01-17 23:45 ` Lorenzo Bianconi
2023-01-18 8:50 ` Niklas Söderlund
2023-01-18 9:38 ` Lorenzo Bianconi
2023-01-18 20:30 ` sdf
2023-01-19 14:23 ` Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 3/7] xsk: add usage of XDP features flags Lorenzo Bianconi
2023-01-17 22:07 ` Yonghong Song
2023-01-17 23:34 ` Lorenzo Bianconi [this message]
2023-01-17 23:37 ` Yonghong Song
2023-01-14 15:54 ` [RFC v2 bpf-next 4/7] libbpf: add the capability to specify netlink proto in libbpf_netlink_send_recv Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 5/7] libbpf: add API to get XDP/XSK supported features Lorenzo Bianconi
2023-01-18 0:58 ` Jakub Kicinski
2023-01-19 22:39 ` Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 6/7] bpf: devmap: check XDP features in bpf_map_update_elem and __xdp_enqueue Lorenzo Bianconi
2023-01-14 15:54 ` [RFC v2 bpf-next 7/7] selftests/bpf: introduce XDP compliance test tool Lorenzo Bianconi
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