diff mbox series

app/testpmd: fix IPv4 checksum

Message ID 20210802180011.7183-1-getelson@nvidia.com (mailing list archive)
State Superseded, archived
Delegated to: Andrew Rybchenko
Headers
Series app/testpmd: fix IPv4 checksum |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK
ci/intel-Testing success Testing PASS

Commit Message

Gregory Etelson Aug. 2, 2021, 6 p.m. UTC 
  UDP protocol reserves 0 checksum value for special purposes.
Other protocols, like IPv4, TCP and SCTP must calculate checksum value
in software or offload checksum calculation to hardware.

If IPv4 TX checksum offload was off and header checksum was set to 0,
testpmd csum engine did not calculate checksum value for IPv4, TCP and
SCTP.

The patch always calculates IPv4, TCP and SCTP TX checksums if it is
not offloaded.

Fixes: b2a9e4a855d0 ("app/testpmd: fix Tx checksum calculation for tunnel")

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
---
 app/test-pmd/csumonly.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Ajit Khaparde Aug. 2, 2021, 6:04 p.m. UTC | #1 
On Mon, Aug 2, 2021 at 11:00 AM Gregory Etelson <getelson@nvidia.com> wrote:
>
> UDP protocol reserves 0 checksum value for special purposes.
> Other protocols, like IPv4, TCP and SCTP must calculate checksum value
> in software or offload checksum calculation to hardware.
>
> If IPv4 TX checksum offload was off and header checksum was set to 0,
> testpmd csum engine did not calculate checksum value for IPv4, TCP and
> SCTP.
>
> The patch always calculates IPv4, TCP and SCTP TX checksums if it is
> not offloaded.
>
> Fixes: b2a9e4a855d0 ("app/testpmd: fix Tx checksum calculation for tunnel")
>
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
I think this fixes Bug 768?

If yes, please add the tag "Bugzilla ID: 768" to the commit.

> ---
>  app/test-pmd/csumonly.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
> index bd5ad64a57..607c889359 100644
> --- a/app/test-pmd/csumonly.c
> +++ b/app/test-pmd/csumonly.c
> @@ -487,7 +487,7 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
>                 } else {
>                         if (tx_offloads & DEV_TX_OFFLOAD_IPV4_CKSUM) {
>                                 ol_flags |= PKT_TX_IP_CKSUM;
> -                       } else if (ipv4_hdr->hdr_checksum != 0) {
> +                       } else {
>                                 ipv4_hdr->hdr_checksum = 0;
>                                 ipv4_hdr->hdr_checksum =
>                                         rte_ipv4_cksum(ipv4_hdr);
> @@ -519,7 +519,7 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
>                         ol_flags |= PKT_TX_TCP_SEG;
>                 else if (tx_offloads & DEV_TX_OFFLOAD_TCP_CKSUM) {
>                         ol_flags |= PKT_TX_TCP_CKSUM;
> -               } else if (tcp_hdr->cksum != 0) {
> +               } else {
>                         tcp_hdr->cksum = 0;
>                         tcp_hdr->cksum =
>                                 get_udptcp_checksum(l3_hdr, tcp_hdr,
> @@ -535,7 +535,7 @@ process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
>                 if ((tx_offloads & DEV_TX_OFFLOAD_SCTP_CKSUM) &&
>                         ((ipv4_hdr->total_length & 0x3) == 0)) {
>                         ol_flags |= PKT_TX_SCTP_CKSUM;
> -               } else if (sctp_hdr->cksum != 0) {
> +               } else {
>                         sctp_hdr->cksum = 0;
>                         /* XXX implement CRC32c, example available in
>                          * RFC3309 */
> --
> 2.32.0
>
diff mbox series

Patch

diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index bd5ad64a57..607c889359 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -487,7 +487,7 @@  process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
 		} else {
 			if (tx_offloads & DEV_TX_OFFLOAD_IPV4_CKSUM) {
 				ol_flags |= PKT_TX_IP_CKSUM;
-			} else if (ipv4_hdr->hdr_checksum != 0) {
+			} else {
 				ipv4_hdr->hdr_checksum = 0;
 				ipv4_hdr->hdr_checksum =
 					rte_ipv4_cksum(ipv4_hdr);
@@ -519,7 +519,7 @@  process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
 			ol_flags |= PKT_TX_TCP_SEG;
 		else if (tx_offloads & DEV_TX_OFFLOAD_TCP_CKSUM) {
 			ol_flags |= PKT_TX_TCP_CKSUM;
-		} else if (tcp_hdr->cksum != 0) {
+		} else {
 			tcp_hdr->cksum = 0;
 			tcp_hdr->cksum =
 				get_udptcp_checksum(l3_hdr, tcp_hdr,
@@ -535,7 +535,7 @@  process_inner_cksums(void *l3_hdr, const struct testpmd_offload_info *info,
 		if ((tx_offloads & DEV_TX_OFFLOAD_SCTP_CKSUM) &&
 			((ipv4_hdr->total_length & 0x3) == 0)) {
 			ol_flags |= PKT_TX_SCTP_CKSUM;
-		} else if (sctp_hdr->cksum != 0) {
+		} else {
 			sctp_hdr->cksum = 0;
 			/* XXX implement CRC32c, example available in
 			 * RFC3309 */