From: Jesper Dangaard Brouer <brouer@redhat.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [PATCH bpf-next 3/6] xsk: introduce xsk_do_redirect_rx_full() helper
Date: Fri, 4 Sep 2020 17:11:43 +0200 [thread overview]
Message-ID: <20200904171143.5868999a@carbon> (raw)
In-Reply-To: <20200904135332.60259-4-bjorn.topel@gmail.com>
On Fri, 4 Sep 2020 15:53:28 +0200
Bj?rn T?pel <bjorn.topel@gmail.com> wrote:
> From: Bj?rn T?pel <bjorn.topel@intel.com>
>
> The xsk_do_redirect_rx_full() helper can be used to check if a failure
> of xdp_do_redirect() was due to the AF_XDP socket had a full Rx ring.
This is very AF_XDP specific. I think that the cpumap could likely
benefit from similar approach? e.g. if the cpumap kthread is scheduled
on the same CPU.
But for cpumap we only want this behavior if sched on the same CPU as
RX-NAPI. This could be "seen" by the cpumap code itself in the case
bq_flush_to_queue() drops packets, check if rcpu->cpu equal
smp_processor_id(). Maybe I'm taking this too far?
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2020-09-04 15:11 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 13:53 [Intel-wired-lan] [PATCH bpf-next 0/6] xsk: exit NAPI loop when AF_XDP Rx ring is full =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 1/6] xsk: improve xdp_do_redirect() error codes =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 2/6] xdp: introduce xdp_do_redirect_ext() function =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 3/6] xsk: introduce xsk_do_redirect_rx_full() helper =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 15:11 ` Jesper Dangaard Brouer [this message]
2020-09-04 15:39 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-07 12:45 ` Jesper Dangaard Brouer
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 4/6] i40e, xsk: finish napi loop if AF_XDP Rx queue is full =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 5/6] ice, " =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:53 ` [Intel-wired-lan] [PATCH bpf-next 6/6] ixgbe, " =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 15:35 ` Jesper Dangaard Brouer
2020-09-04 15:54 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 13:59 ` [Intel-wired-lan] [PATCH bpf-next 0/6] xsk: exit NAPI loop when AF_XDP Rx ring " =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-08 10:32 ` Maxim Mikityanskiy
2020-09-08 11:37 ` Magnus Karlsson
2020-09-08 12:21 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-09 15:37 ` Jesper Dangaard Brouer
2020-09-04 14:27 ` Jesper Dangaard Brouer
2020-09-04 14:32 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-04 23:58 ` Jakub Kicinski
2020-09-07 13:37 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-07 18:40 ` Jakub Kicinski
2020-09-08 6:58 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-08 17:24 ` Jakub Kicinski
2020-09-08 18:28 ` =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?=
2020-09-08 18:34 ` Jakub Kicinski
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