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* [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum
@ 2021-06-30 11:04 Mohsin Kazmi
  2021-06-30 14:09 ` Olivier Matz
  2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
  0 siblings, 2 replies; 16+ messages in thread
From: Mohsin Kazmi @ 2021-06-30 11:04 UTC (permalink / raw)
  To: dev
  Cc: ray.kinsella, Mohsin Kazmi, stable, Olivier Matz, Tomasz Kulasek,
	Konstantin Ananyev, Thomas Monjalon

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>
---

v2:
* Update the commit message with Fixes.
---
 lib/net/rte_net.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/net/rte_net.h b/lib/net/rte_net.h
index 434435ffa2..e47365099e 100644
--- a/lib/net/rte_net.h
+++ b/lib/net/rte_net.h
@@ -128,8 +128,18 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
 	if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG)))
 		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;
+		}
+	}
 
 	/*
 	 * Check if headers are fragmented.
-- 
2.17.1


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum
  2021-06-30 11:04 [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum Mohsin Kazmi
@ 2021-06-30 14:09 ` Olivier Matz
  2021-07-07  9:14   ` Mohsin Kazmi
  2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
  1 sibling, 1 reply; 16+ messages in thread
From: Olivier Matz @ 2021-06-30 14:09 UTC (permalink / raw)
  To: Mohsin Kazmi
  Cc: dev, ray.kinsella, stable, Tomasz Kulasek, Konstantin Ananyev,
	Thomas Monjalon

Hi Mohsin,

Hope you are fine!
Please see my comments below.

On Wed, Jun 30, 2021 at 01:04:04PM +0200, Mohsin Kazmi wrote:
> Re: [PATCH v2] net: prepare the outer ipv4 hdr for checksum

I suggest to highlight that it this is the Intel-specific tx-prepare
function in the commit title. What about:

  net: fix Intel-specific Tx preparation for outer checksums

> 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>
> ---
> 
> v2:
> * Update the commit message with Fixes.
> ---
>  lib/net/rte_net.h | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/net/rte_net.h b/lib/net/rte_net.h
> index 434435ffa2..e47365099e 100644
> --- a/lib/net/rte_net.h
> +++ b/lib/net/rte_net.h
> @@ -128,8 +128,18 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
>  	if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG)))
>  		return 0;

I think this test should be updated too with PKT_TX_OUTER_IP_CKSUM.

>  
> -	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;
> +		}
> +	}

What about outer L4 checksum? Does it requires the same than inner?

>  
>  	/*
>  	 * Check if headers are fragmented.
> -- 
> 2.17.1
> 

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum
  2021-06-30 14:09 ` Olivier Matz
@ 2021-07-07  9:14   ` Mohsin Kazmi
  2021-07-22 19:53     ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
  0 siblings, 1 reply; 16+ messages in thread
From: Mohsin Kazmi @ 2021-07-07  9:14 UTC (permalink / raw)
  To: Olivier Matz
  Cc: dev, ray.kinsella, stable, Tomasz Kulasek, Konstantin Ananyev,
	Thomas Monjalon

Hi Olivier,

Thanks for the review.
Please find the comments inline below:

On Wed, Jun 30, 2021 at 3:09 PM Olivier Matz <olivier.matz@6wind.com> wrote:

> Hi Mohsin,
>
> Hope you are fine!
> Please see my comments below.
>
> On Wed, Jun 30, 2021 at 01:04:04PM +0200, Mohsin Kazmi wrote:
> > Re: [PATCH v2] net: prepare the outer ipv4 hdr for checksum
>
> I suggest to highlight that it this is the Intel-specific tx-prepare
> function in the commit title. What about:
>
  net: fix Intel-specific Tx preparation for outer checksums
>
> I'll update the commit title as suggested.

> 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>
> > ---
> >
> > v2:
> > * Update the commit message with Fixes.
> > ---
> >  lib/net/rte_net.h | 12 +++++++++++-
> >  1 file changed, 11 insertions(+), 1 deletion(-)
> >
> > diff --git a/lib/net/rte_net.h b/lib/net/rte_net.h
> > index 434435ffa2..e47365099e 100644
> > --- a/lib/net/rte_net.h
> > +++ b/lib/net/rte_net.h
> > @@ -128,8 +128,18 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf
> *m, uint64_t ol_flags)
> >       if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK |
> PKT_TX_TCP_SEG)))
> >               return 0;
>
> I think this test should be updated too with PKT_TX_OUTER_IP_CKSUM.
>
Thanks. Yes, I'll update it too.

>
> >
> > -     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;
> > +             }
> > +     }
>
> What about outer L4 checksum? Does it requires the same than inner?
>
I am using XL710 for my testing with i40e dpdk driver. AFAIK, It doesn't
support outer l4 checksum. I am not sure if other Intel NICs support it.


> >
> >       /*
> >        * Check if headers are fragmented.
> > --
> > 2.17.1
> >
>

^ permalink raw reply	[flat|nested] 16+ messages in thread

* [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-06-30 11:04 [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum Mohsin Kazmi
  2021-06-30 14:09 ` Olivier Matz
@ 2021-07-07  9:40 ` Mohsin Kazmi
  2021-07-22 19:56   ` Thomas Monjalon
                     ` (2 more replies)
  1 sibling, 3 replies; 16+ messages in thread
From: Mohsin Kazmi @ 2021-07-07  9:40 UTC (permalink / raw)
  To: dev; +Cc: Mohsin Kazmi, stable

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;
+		}
+	}
 
 	/*
 	 * Check if headers are fragmented.
-- 
2.17.1


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v2] net: prepare the outer ipv4 hdr for checksum
  2021-07-07  9:14   ` Mohsin Kazmi
@ 2021-07-22 19:53     ` Thomas Monjalon
  2021-08-03 12:29       ` Mohsin Kazmi
  0 siblings, 1 reply; 16+ messages in thread
From: Thomas Monjalon @ 2021-07-22 19:53 UTC (permalink / raw)
  To: Mohsin Kazmi
  Cc: Olivier Matz, dev, ray.kinsella, stable, Tomasz Kulasek,
	Konstantin Ananyev

07/07/2021 11:14, Mohsin Kazmi:
> On Wed, Jun 30, 2021 at 3:09 PM Olivier Matz <olivier.matz@6wind.com> wrote:
> > > +     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;
> > > +             }
> > > +     }
> >
> > What about outer L4 checksum? Does it requires the same than inner?
> >
> I am using XL710 for my testing with i40e dpdk driver. AFAIK, It doesn't
> support outer l4 checksum. I am not sure if other Intel NICs support it.

This function is used by a lot of drivers.
Try git grep rte_net_intel_cksum_prepare

I think we need more reviews on the v3.
Given it is far from being a new bug, I suggest to wait the next release
in order to have more feedbacks.



^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
@ 2021-07-22 19:56   ` Thomas Monjalon
  2021-07-27 12:52     ` Olivier Matz
  2021-07-28 15:46   ` [dpdk-stable] [dpdk-dev] " Andrew Rybchenko
  2021-09-07 10:49   ` [dpdk-stable] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 " Mohsin Kazmi
  2 siblings, 1 reply; 16+ messages in thread
From: Thomas Monjalon @ 2021-07-22 19:56 UTC (permalink / raw)
  To: Mohsin Kazmi
  Cc: dev, stable, olivier.matz, david.marchand, maxime.coquelin,
	andrew.rybchenko, ferruh.yigit

+Cc more people for reviews.

07/07/2021 11:40, Mohsin Kazmi:
> 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.

nit: please write "IPv4" here and below.

> 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>
[...]
> @@ -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;
> +		}
> +	}




^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-22 19:56   ` Thomas Monjalon
@ 2021-07-27 12:52     ` Olivier Matz
  0 siblings, 0 replies; 16+ messages in thread
From: Olivier Matz @ 2021-07-27 12:52 UTC (permalink / raw)
  To: Thomas Monjalon
  Cc: Mohsin Kazmi, dev, stable, david.marchand, maxime.coquelin,
	andrew.rybchenko, ferruh.yigit

On Thu, Jul 22, 2021 at 09:56:25PM +0200, Thomas Monjalon wrote:
> +Cc more people for reviews.
> 
> 07/07/2021 11:40, Mohsin Kazmi:
> > Preparation the headers for the hardware offload

"of" is missing after Preparation?

> > 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.
> 
> nit: please write "IPv4" here and below.
> 
> > 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>

Acked-by: Olivier Matz <olivier.matz@6wind.com>

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
  2021-07-22 19:56   ` Thomas Monjalon
@ 2021-07-28 15:46   ` Andrew Rybchenko
  2021-07-30 11:11     ` Olivier Matz
  2021-09-07 10:49   ` [dpdk-stable] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 " Mohsin Kazmi
  2 siblings, 1 reply; 16+ messages in thread
From: Andrew Rybchenko @ 2021-07-28 15:46 UTC (permalink / raw)
  To: Mohsin Kazmi, dev; +Cc: stable

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.

> +		}
> +	}
>   
>   	/*
>   	 * Check if headers are fragmented.
> 


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-28 15:46   ` [dpdk-stable] [dpdk-dev] " Andrew Rybchenko
@ 2021-07-30 11:11     ` Olivier Matz
  2021-07-31 12:49       ` Andrew Rybchenko
  0 siblings, 1 reply; 16+ messages in thread
From: Olivier Matz @ 2021-07-30 11:11 UTC (permalink / raw)
  To: Andrew Rybchenko; +Cc: Mohsin Kazmi, dev, stable

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.
> > 
> 

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-30 11:11     ` Olivier Matz
@ 2021-07-31 12:49       ` Andrew Rybchenko
  2021-08-03 12:49         ` Mohsin Kazmi
  0 siblings, 1 reply; 16+ messages in thread
From: Andrew Rybchenko @ 2021-07-31 12:49 UTC (permalink / raw)
  To: Olivier Matz; +Cc: Mohsin Kazmi, dev, stable

On 7/30/21 2:11 PM, Olivier Matz wrote:
> 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.

If no, what's the point to spoil memory here if stricter check is
done few lines below.

>>> +		}
>>> +	}
>>>    	/*
>>>    	 * Check if headers are fragmented.
>>>
>>


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v2] net: prepare the outer ipv4 hdr for checksum
  2021-07-22 19:53     ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
@ 2021-08-03 12:29       ` Mohsin Kazmi
  0 siblings, 0 replies; 16+ messages in thread
From: Mohsin Kazmi @ 2021-08-03 12:29 UTC (permalink / raw)
  To: Thomas Monjalon
  Cc: Olivier Matz, dev, ray.kinsella, stable, Tomasz Kulasek,
	Konstantin Ananyev, humin29, oulijun, yisen.zhuang, jiawenwu,
	jianwang

Hi Thomas,

Thanks for the review.

I did the git grep rte_net_intel_cksum_prepare and git grep
PKT_TX_OUTER_UDP_CKSUM. Following are the two drivers that use the function
to prepare headers for checksum which also uses the outer_udp_checksum
offload within drivers.

1) Hisilicon hns3

2) Wangxun txgbe

1) has implemented its own version of functions to prepare for outer header
checksum. It may benefit/impact from the change.

The function "rte_net_intel_cksum_prepare" is intel specific and intel
cards do not support outer l4 checksum offload. DPDK may provide a generic
version of the same function which can be used in different drivers.

-br
Mohsin

On Thu, Jul 22, 2021 at 8:53 PM Thomas Monjalon <thomas@monjalon.net> wrote:

> 07/07/2021 11:14, Mohsin Kazmi:
> > On Wed, Jun 30, 2021 at 3:09 PM Olivier Matz <olivier.matz@6wind.com>
> wrote:
> > > > +     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;
> > > > +             }
> > > > +     }
> > >
> > > What about outer L4 checksum? Does it requires the same than inner?
> > >
> > I am using XL710 for my testing with i40e dpdk driver. AFAIK, It doesn't
> > support outer l4 checksum. I am not sure if other Intel NICs support it.
>
> This function is used by a lot of drivers.
> Try git grep rte_net_intel_cksum_prepare
>
> I think we need more reviews on the v3.
> Given it is far from being a new bug, I suggest to wait the next release
> in order to have more feedbacks.
>
>
>

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-07-31 12:49       ` Andrew Rybchenko
@ 2021-08-03 12:49         ` Mohsin Kazmi
  2021-08-27 13:44           ` Mohsin Kazmi
  0 siblings, 1 reply; 16+ messages in thread
From: Mohsin Kazmi @ 2021-08-03 12:49 UTC (permalink / raw)
  To: Andrew Rybchenko; +Cc: Olivier Matz, dev, stable

On Sat, Jul 31, 2021 at 1:49 PM Andrew Rybchenko <
andrew.rybchenko@oktetlabs.ru> wrote:

> On 7/30/21 2:11 PM, Olivier Matz wrote:
> > 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.
>
> If no, what's the point to spoil memory here if stricter check is
> done few lines below.
>
We have two possibilities:
1) take the whole block of above code after the strict check: Then strict
check will use m->outer_l2_len + m->outer_l3_len directly without any
condition and we will be on the mercy of drivers to initialize these to 0
if outer headers are not use. Drivers usually don't set the fields which
they are not interested in because of performance reasons as
setting these values per packet will cost them additional cycles.
2) Taking just PKT_TX_OUTER_IP_CKSUM conditional check after the strict
fragmented check: In that case, each packet will hit an extra conditional
check without getting benefit from it, again with a performance penalty.

I am more inclined towards solution 1. But I also welcome other
suggestions/comments.

>
> >>> +           }
> >>> +   }
> >>>     /*
> >>>      * Check if headers are fragmented.
> >>>
> >>
>
>

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net: fix Intel-specific Prepare the outer ipv4 hdr for checksum
  2021-08-03 12:49         ` Mohsin Kazmi
@ 2021-08-27 13:44           ` Mohsin Kazmi
  0 siblings, 0 replies; 16+ messages in thread
From: Mohsin Kazmi @ 2021-08-27 13:44 UTC (permalink / raw)
  To: Andrew Rybchenko; +Cc: Olivier Matz, dev, stable

Are we good with this patch with the current state? @Olivier: Any comments
on the above suggestions?

On Tue, Aug 3, 2021 at 1:49 PM Mohsin Kazmi <mohsin.kazmi14@gmail.com>
wrote:

>
>
> On Sat, Jul 31, 2021 at 1:49 PM Andrew Rybchenko <
> andrew.rybchenko@oktetlabs.ru> wrote:
>
>> On 7/30/21 2:11 PM, Olivier Matz wrote:
>> > 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.
>>
>> If no, what's the point to spoil memory here if stricter check is
>> done few lines below.
>>
> We have two possibilities:
> 1) take the whole block of above code after the strict check: Then strict
> check will use m->outer_l2_len + m->outer_l3_len directly without any
> condition and we will be on the mercy of drivers to initialize these to 0
> if outer headers are not use. Drivers usually don't set the fields which
> they are not interested in because of performance reasons as
> setting these values per packet will cost them additional cycles.
> 2) Taking just PKT_TX_OUTER_IP_CKSUM conditional check after the strict
> fragmented check: In that case, each packet will hit an extra conditional
> check without getting benefit from it, again with a performance penalty.
>
> I am more inclined towards solution 1. But I also welcome other
> suggestions/comments.
>
>>
>> >>> +           }
>> >>> +   }
>> >>>     /*
>> >>>      * Check if headers are fragmented.
>> >>>
>> >>
>>
>>

^ permalink raw reply	[flat|nested] 16+ messages in thread

* [dpdk-stable] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 hdr for checksum
  2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
  2021-07-22 19:56   ` Thomas Monjalon
  2021-07-28 15:46   ` [dpdk-stable] [dpdk-dev] " Andrew Rybchenko
@ 2021-09-07 10:49   ` Mohsin Kazmi
  2021-09-15 10:39     ` [dpdk-stable] [dpdk-dev] " Ferruh Yigit
  2021-09-15 11:04     ` Ferruh Yigit
  2 siblings, 2 replies; 16+ messages in thread
From: Mohsin Kazmi @ 2021-09-07 10:49 UTC (permalink / raw)
  To: dev; +Cc: Mohsin Kazmi, stable

Preparation of 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>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
---
v4:
   * Update the commit message

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..42639bc154 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;
+		}
+	}
 
 	/*
 	 * Check if headers are fragmented.
-- 
2.17.1


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 hdr for checksum
  2021-09-07 10:49   ` [dpdk-stable] [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
  1 sibling, 0 replies; 16+ messages in thread
From: Ferruh Yigit @ 2021-09-15 10:39 UTC (permalink / raw)
  To: Mohsin Kazmi, dev, Konstantin Ananyev, Olivier Matz
  Cc: stable, Andrew Rybchenko, Marcin Wojtas, Michal Krawczyk,
	Shai Brandes, Evgeny Schemeilin, Igor Chauskin

On 9/7/2021 11:49 AM, Mohsin Kazmi wrote:
> Preparation of 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>
> Acked-by: Olivier Matz <olivier.matz@6wind.com>

<...>

> diff --git a/lib/net/rte_net.h b/lib/net/rte_net.h
> index 434435ffa2..42639bc154 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)

Not directly related with this patch, but is the function
'rte_net_intel_cksum_flags_prepare()' really Intel specific?

I can see sfc & ena are also using this function, should we rename it?

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [dpdk-stable] [dpdk-dev] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 hdr for checksum
  2021-09-07 10:49   ` [dpdk-stable] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 " Mohsin Kazmi
  2021-09-15 10:39     ` [dpdk-stable] [dpdk-dev] " Ferruh Yigit
@ 2021-09-15 11:04     ` Ferruh Yigit
  1 sibling, 0 replies; 16+ messages in thread
From: Ferruh Yigit @ 2021-09-15 11:04 UTC (permalink / raw)
  To: Mohsin Kazmi, dev; +Cc: stable

On 9/7/2021 11:49 AM, Mohsin Kazmi wrote:
> Preparation of 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>
> Acked-by: Olivier Matz <olivier.matz@6wind.com>

Applied to dpdk-next-net/main, thanks.

Patch title updated as following while merging:
net: fix checksum offload for outer IPv4


^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2021-09-15 11:04 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-30 11:04 [dpdk-stable] [PATCH v2] net: prepare the outer ipv4 hdr for checksum Mohsin Kazmi
2021-06-30 14:09 ` Olivier Matz
2021-07-07  9:14   ` Mohsin Kazmi
2021-07-22 19:53     ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2021-08-03 12:29       ` Mohsin Kazmi
2021-07-07  9:40 ` [dpdk-stable] [PATCH v3] net: fix Intel-specific Prepare " Mohsin Kazmi
2021-07-22 19:56   ` Thomas Monjalon
2021-07-27 12:52     ` Olivier Matz
2021-07-28 15:46   ` [dpdk-stable] [dpdk-dev] " Andrew Rybchenko
2021-07-30 11:11     ` Olivier Matz
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-stable] [PATCH v4] net: fix Intel-specific Prepare the outer IPv4 " Mohsin Kazmi
2021-09-15 10:39     ` [dpdk-stable] [dpdk-dev] " Ferruh Yigit
2021-09-15 11:04     ` Ferruh Yigit

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git