[dpdk-dev] [PATCH 3/5] net/virtio: do not touch Tx offload flags
Maxime Coquelin
maxime.coquelin at redhat.com
Tue Apr 13 16:17:50 CEST 2021
On 4/1/21 11:52 AM, David Marchand wrote:
> Tx offload flags are of the application responsibility.
> Leave the mbuf alone and use a local storage for implicit tcp checksum
> offloading in case of TSO.
>
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---
> drivers/net/virtio/virtqueue.h | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h
> index 71b66f3208..2e8826bc28 100644
> --- a/drivers/net/virtio/virtqueue.h
> +++ b/drivers/net/virtio/virtqueue.h
> @@ -618,10 +618,12 @@ virtqueue_xmit_offload(struct virtio_net_hdr *hdr,
> uint8_t offload)
> {
> if (offload) {
> + uint64_t csum_l4 = cookie->ol_flags & PKT_TX_L4_MASK;
> +
> if (cookie->ol_flags & PKT_TX_TCP_SEG)
> - cookie->ol_flags |= PKT_TX_TCP_CKSUM;
> + csum_l4 |= PKT_TX_TCP_CKSUM;
>
> - switch (cookie->ol_flags & PKT_TX_L4_MASK) {
> + switch (csum_l4) {
> case PKT_TX_UDP_CKSUM:
> hdr->csum_start = cookie->l2_len + cookie->l3_len;
> hdr->csum_offset = offsetof(struct rte_udp_hdr,
>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Thanks,
Maxime
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