From: Ivan Malov <Ivan.Malov@oktetlabs.ru>
To: Gregory Etelson <getelson@nvidia.com>, dev@dpdk.org
Cc: matan@nvidia.com, rasland@nvidia.com, stable@dpdk.org,
Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
Ori Kam <orika@nvidia.com>, Thomas Monjalon <thomas@monjalon.net>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
Andy Moreton <amoreton@xilinx.com>,
Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [dpdk-stable] [PATCH] ethdev: fix VXLAN mask initialization value
Date: Thu, 8 Apr 2021 19:31:31 +0300 [thread overview]
Message-ID: <df123db2-b743-d85b-b55c-d5dfcb2c24d8@oktetlabs.ru> (raw)
In-Reply-To: <395f50f2-d8af-4a24-ae2a-728494ef2368@intel.com>
On 4/8/2021 7:48 AM, Gregory Etelson wrote:
> In GCC compiler, __builtin_constant_p(exp) is a function.
> The function returns the integer 1 if the argument is known to be
> a compile-time constant.
> Therefore, __builtin_constant_p(0xffffff << 8) returned 1.
> As the result, rte_flow_item_vxlan_mask was initiated to
> {{
> {flags = 0x0, rsvd0 = {0x0, 0x0, 0x0},
> vni = {0x0, 0x0, 0x0}, rsvd1 = 0x1},
> hdr = {vx_flags = 0x0, vx_vni = 0x1000000}}}
> }}
> GCC fails initialization
> rte_flow_item_vxlan_mask.hdr.vni = (0xffffff << 8)
> with "initializer element is not a constant expression" error.
> Use immediate 0xffffff00 value instead.
>
> Cc: stable@dpdk.org
> Fixes: 43af98e687cf ("ethdev: reuse VXLAN header definition in flow
item")
>
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>
--
Ivan M
next prev parent reply other threads:[~2021-04-08 16:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-08 6:48 Gregory Etelson
2021-04-08 15:35 ` Ferruh Yigit
2021-04-08 16:31 ` Ivan Malov [this message]
2021-04-09 9:28 ` Ferruh Yigit
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=df123db2-b743-d85b-b55c-d5dfcb2c24d8@oktetlabs.ru \
--to=ivan.malov@oktetlabs.ru \
--cc=amoreton@xilinx.com \
--cc=andrew.rybchenko@oktetlabs.ru \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@intel.com \
--cc=getelson@nvidia.com \
--cc=matan@nvidia.com \
--cc=orika@nvidia.com \
--cc=rasland@nvidia.com \
--cc=stable@dpdk.org \
--cc=thomas@monjalon.net \
--cc=viacheslavo@nvidia.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).