From: Olivier Matz <olivier.matz@6wind.com>
To: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Cc: Mohsin Kazmi <mohsin.kazmi14@gmail.com>, dev@dpdk.org, stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
Date: Fri, 30 Jul 2021 13:11:53 +0200 [thread overview]
Message-ID: <YQPeeY3p8RyBaqEb@platinum> (raw)
In-Reply-To: <0efac6a6-f5d1-48f1-3a95-a8b87469cc23@oktetlabs.ru>
On Wed, Jul 28, 2021 at 06:46:53PM +0300, Andrew Rybchenko wrote:
> On 7/7/21 12:40 PM, Mohsin Kazmi wrote:
> > Preparation the headers for the hardware offload
> > misses the outer ipv4 checksum offload.
> > It results in bad checksum computed by hardware NIC.
> >
> > This patch fixes the issue by setting the outer ipv4
> > checksum field to 0.
> >
> > Fixes: 4fb7e803eb1a ("ethdev: add Tx preparation")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Mohsin Kazmi <mohsin.kazmi14@gmail.com>
> > Acked-by: Qi Zhang <qi.z.zhang@intel.com>
> > ---
> > v3:
> > * Update the conditional test with PKT_TX_OUTER_IP_CKSUM.
> > * Update the commit title with "Intel-specific".
> >
> > v2:
> > * Update the commit message with Fixes.
> >
> > lib/net/rte_net.h | 15 +++++++++++++--
> > 1 file changed, 13 insertions(+), 2 deletions(-)
> >
> > diff --git a/lib/net/rte_net.h b/lib/net/rte_net.h
> > index 434435ffa2..3f4c8c58b9 100644
> > --- a/lib/net/rte_net.h
> > +++ b/lib/net/rte_net.h
> > @@ -125,11 +125,22 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
> > * Mainly it is required to avoid fragmented headers check if
> > * no offloads are requested.
> > */
> > - if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG)))
> > + if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG |
> > + PKT_TX_OUTER_IP_CKSUM)))
> > return 0;
> > - if (ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6))
> > + if (ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6)) {
> > inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
> > + /*
> > + * prepare outer ipv4 header checksum by setting it to 0,
> > + * in order to be computed by hardware NICs.
> > + */
> > + if (ol_flags & PKT_TX_OUTER_IP_CKSUM) {
> > + ipv4_hdr = rte_pktmbuf_mtod_offset(m,
> > + struct rte_ipv4_hdr *, m->outer_l2_len);
> > + ipv4_hdr->hdr_checksum = 0;
>
> Here we assume that the field is located in the first segment.
> Unlikely but it still could be false. We must handle it properly.
This is specified in the API comment, so I think it has to be checked
by the caller.
> > + }
> > + }
> > /*
> > * Check if headers are fragmented.
> >
>
next prev parent reply other threads:[~2021-07-30 11:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 11:04 [dpdk-dev] [PATCH v2] net: prepare " Mohsin Kazmi
2021-06-30 14:09 ` Olivier Matz
2021-07-07 9:14 ` Mohsin Kazmi
2021-07-22 19:53 ` Thomas Monjalon
2021-08-03 12:29 ` Mohsin Kazmi
2021-07-07 9:40 ` [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
2021-07-22 19:56 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2021-07-27 12:52 ` Olivier Matz
2021-07-28 15:46 ` [dpdk-dev] " Andrew Rybchenko
2021-07-30 11:11 ` Olivier Matz [this message]
2021-07-31 12:49 ` Andrew Rybchenko
2021-08-03 12:49 ` Mohsin Kazmi
2021-08-27 13:44 ` Mohsin Kazmi
2021-09-07 10:49 ` [dpdk-dev] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 " Mohsin Kazmi
2021-09-15 10:39 ` Ferruh Yigit
2021-09-15 11:04 ` 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=YQPeeY3p8RyBaqEb@platinum \
--to=olivier.matz@6wind.com \
--cc=andrew.rybchenko@oktetlabs.ru \
--cc=dev@dpdk.org \
--cc=mohsin.kazmi14@gmail.com \
--cc=stable@dpdk.org \
/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).