From: Mohsin Bashir <mohsin.bashr@gmail.com>
To: netdev@vger.kernel.org
Cc: kuba@kernel.org, alexanderduyck@fb.com, andrew+netdev@lunn.ch,
davem@davemloft.net, edumazet@google.com, pabeni@redhat.com,
mohsin.bashr@gmail.com, horms@kernel.org,
vadim.fedorenko@linux.dev, jdamato@fastly.com, sdf@fomichev.me,
aleksander.lobakin@intel.com, ast@kernel.org,
daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com
Subject: [PATCH net-next 4/9] eth: fbnic: Prefetch packet headers on Rx
Date: Wed, 23 Jul 2025 07:59:21 -0700 [thread overview]
Message-ID: <20250723145926.4120434-5-mohsin.bashr@gmail.com> (raw)
In-Reply-To: <20250723145926.4120434-1-mohsin.bashr@gmail.com>
Issue a prefetch for the start of the buffer on Rx to try to avoid cache
miss on packet headers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
---
drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
index f5725c0972a5..71af7b9d5bcd 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
@@ -888,7 +888,7 @@ static void fbnic_pkt_prepare(struct fbnic_napi_vector *nv, u64 rcd,
/* Build frame around buffer */
hdr_start = page_address(page) + hdr_pg_start;
-
+ net_prefetch(pkt->buff.data);
xdp_prepare_buff(&pkt->buff, hdr_start, headroom,
len - FBNIC_RX_PAD, true);
--
2.47.1
next prev parent reply other threads:[~2025-07-23 15:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-23 14:59 [PATCH net-next 0/9] eth: fbnic Add XDP support for fbnic Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 1/9] eth: fbnic: Add support for HDS configuration Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 2/9] eth: fbnic: Update Headroom Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 3/9] eth: fbnic: Use shinfo to track frags state on Rx Mohsin Bashir
2025-07-23 14:59 ` Mohsin Bashir [this message]
2025-07-23 14:59 ` [PATCH net-next 5/9] eth: fbnic: Add XDP pass, drop, abort support Mohsin Bashir
2025-07-23 17:35 ` Maciej Fijalkowski
2025-07-24 15:47 ` Mohsin Bashir
2025-07-24 16:51 ` Jakub Kicinski
2025-07-24 21:14 ` Alexander H Duyck
2025-07-25 9:56 ` Maciej Fijalkowski
2025-07-25 15:10 ` Alexander Duyck
2025-08-07 21:24 ` Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 6/9] eth: fbnic: Add support for XDP queues Mohsin Bashir
2025-07-23 23:54 ` Jakub Kicinski
2025-07-23 14:59 ` [PATCH net-next 7/9] eth: fbnic: Add support for XDP_TX action Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 8/9] eth: fbnic: Collect packet statistics for XDP Mohsin Bashir
2025-07-24 10:18 ` Simon Horman
2025-07-24 15:48 ` Mohsin Bashir
2025-07-23 14:59 ` [PATCH net-next 9/9] eth: fbnic: Report XDP stats via ethtool Mohsin Bashir
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250723145926.4120434-5-mohsin.bashr@gmail.com \
--to=mohsin.bashr@gmail.com \
--cc=aleksander.lobakin@intel.com \
--cc=alexanderduyck@fb.com \
--cc=andrew+netdev@lunn.ch \
--cc=ast@kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=hawk@kernel.org \
--cc=horms@kernel.org \
--cc=jdamato@fastly.com \
--cc=john.fastabend@gmail.com \
--cc=kuba@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sdf@fomichev.me \
--cc=vadim.fedorenko@linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).