8ba1723783
Virtio specification supports guest checksum offloading for L4, which is enabled with VIRTIO_NET_F_GUEST_CSUM feature negotiation. However, the Vhost PMD does not advertise Tx checksum offload capabilities. Advertising these offload capabilities at the ethdev level is not enough, because we could still end-up with the application enabling these offloads while the guest not negotiating it. This patch advertises the Tx checksum offload capabilities, and introduces a compatibility layer to cover the case VIRTIO_NET_F_GUEST_CSUM has not been negotiated but the application does configure the Tx checksum offloads. This function performs the L4 Tx checksum in SW for UDP and TCP. Compared to Rx SW checksum, the Tx SW checksum function needs to compute the pseudo-header checksum, as we cannot know whether it was done before. This patch does not advertise SCTP checksum offloading capability for now, but it could be handled later if the need arises. Reported-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Chenbo Xia <chenbo.xia@intel.com> Reviewed-by: Cheng Jiang <cheng1.jiang@intel.com> |
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| .. | ||
| meson.build | ||
| rte_eth_vhost.c | ||
| rte_eth_vhost.h | ||
| version.map | ||