DPDK patches and discussions
 help / color / mirror / Atom feed
From: <shaibran@amazon.com>
To: <ferruh.yigit@amd.com>
Cc: <dev@dpdk.org>, Shai Brandes <shaibran@amazon.com>
Subject: [PATCH v4 11/31] net/ena/base: use correct read once on u8 field
Date: Tue, 12 Mar 2024 20:06:56 +0200	[thread overview]
Message-ID: <20240312180716.8515-12-shaibran@amazon.com> (raw)
In-Reply-To: <20240312180716.8515-1-shaibran@amazon.com>

From: Shai Brandes <shaibran@amazon.com>

The flags field in ena_eth_io_tx_cdesc is 8-bits long.
The current macro used is READ_ONCE16.
Switching to READ_ONCE8 to avoid reading extra data.
Given that there's an implicit cast to u8 in the assignment,
the correct value is being read, but this change makes it
even more accurate.

Signed-off-by: Shai Brandes <shaibran@amazon.com>
Reviewed-by: Amit Bernstein <amitbern@amazon.com>
---
 drivers/net/ena/base/ena_eth_com.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ena/base/ena_eth_com.h b/drivers/net/ena/base/ena_eth_com.h
index cee4f35124..6a7c17f84f 100644
--- a/drivers/net/ena/base/ena_eth_com.h
+++ b/drivers/net/ena/base/ena_eth_com.h
@@ -219,7 +219,7 @@ static inline int ena_com_tx_comp_req_id_get(struct ena_com_io_cq *io_cq,
 	 * expected, it mean that the device still didn't update
 	 * this completion.
 	 */
-	cdesc_phase = READ_ONCE16(cdesc->flags) & ENA_ETH_IO_TX_CDESC_PHASE_MASK;
+	cdesc_phase = READ_ONCE8(cdesc->flags) & ENA_ETH_IO_TX_CDESC_PHASE_MASK;
 	if (cdesc_phase != expected_phase)
 		return ENA_COM_TRY_AGAIN;
 
-- 
2.17.1


  parent reply	other threads:[~2024-03-12 18:08 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-12 18:06 [PATCH v4 00/31] net/ena: v2.9.0 driver release shaibran
2024-03-12 18:06 ` [PATCH v4 01/31] net/ena: rework the metrics multi-process functions shaibran
2024-03-12 18:06 ` [PATCH v4 02/31] net/ena: report new supported link speed capabilities shaibran
2024-03-12 18:06 ` [PATCH v4 03/31] net/ena: update imissed stat with Rx overruns shaibran
2024-03-13 15:59   ` Ferruh Yigit
2024-03-12 18:06 ` [PATCH v4 04/31] net/ena: sub-optimal configuration notifications support shaibran
2024-03-12 18:06 ` [PATCH v4 05/31] net/ena: fix fast mbuf free shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:06 ` [PATCH v4 06/31] net/ena: restructure the llq policy setting process shaibran
2024-03-12 18:06 ` [PATCH v4 07/31] net/ena/base: limit exponential backoff exp shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:06 ` [PATCH v4 08/31] net/ena/base: add a new csum offload bit shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:06 ` [PATCH v4 09/31] net/ena/base: optimize Rx ring submission queue shaibran
2024-03-12 18:06 ` [PATCH v4 10/31] net/ena/base: rename fields in completion descriptors shaibran
2024-03-12 18:06 ` shaibran [this message]
2024-03-12 18:06 ` [PATCH v4 12/31] net/ena/base: add completion descriptor corruption check shaibran
2024-03-12 18:06 ` [PATCH v4 13/31] net/ena/base: malformed Tx descriptor error reason shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:06 ` [PATCH v4 14/31] net/ena/base: phc feature modifications shaibran
2024-03-12 18:07 ` [PATCH v4 15/31] net/ena/base: restructure interrupt handling shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:07 ` [PATCH v4 16/31] net/ena/base: add unlikely to error checks shaibran
2024-03-12 18:07 ` [PATCH v4 17/31] net/ena/base: missing admin interrupt reset reason shaibran
2024-03-12 18:07 ` [PATCH v4 18/31] net/ena/base: check for existing keep alive notification shaibran
2024-03-12 18:07 ` [PATCH v4 19/31] net/ena/base: modify memory barrier comment shaibran
2024-03-12 18:07 ` [PATCH v4 20/31] net/ena/base: rework Rx ring submission queue shaibran
2024-03-12 18:07 ` [PATCH v4 21/31] net/ena/base: remove operating system type enum shaibran
2024-03-12 18:07 ` [PATCH v4 22/31] net/ena/base: handle command abort shaibran
2024-03-12 18:07 ` [PATCH v4 23/31] net/ena/base: add support for device reset request shaibran
2024-03-12 18:07 ` [PATCH v4 24/31] net/ena: cosmetic changes shaibran
2024-03-13 15:58   ` Ferruh Yigit
2024-03-12 18:07 ` [PATCH v4 25/31] net/ena/base: modify customer metrics memory management shaibran
2024-03-12 18:07 ` [PATCH v4 26/31] net/ena/base: modify logs to use unsigned format specifier shaibran
2024-03-12 18:07 ` [PATCH v4 27/31] net/ena: update device-preferred size of rings shaibran
2024-03-12 18:07 ` [PATCH v4 28/31] net/ena: exhaust interrupt callbacks in device close shaibran
2024-03-12 18:07 ` [PATCH v4 29/31] net/ena: support max large llq depth from the device shaibran
2024-03-12 18:07 ` [PATCH v4 30/31] net/ena: control path pure polling mode shaibran
2024-03-12 18:07 ` [PATCH v4 31/31] net/ena: upgrade driver version to 2.9.0 shaibran
2024-03-13 16:00 ` [PATCH v4 00/31] net/ena: v2.9.0 driver release Ferruh Yigit
2024-03-13 17:07   ` Brandes, Shai

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=20240312180716.8515-12-shaibran@amazon.com \
    --to=shaibran@amazon.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@amd.com \
    /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).