rtl8169: Offload transmit checksums and TCP large send - #319
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BeastLe9enD wants to merge 1 commit into
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Complete descriptor-requested IPv4, TCP and UDP checksums on transmit, including VLAN-tagged frames and scatter/gather reassembled frames, and implement TCP large send (LGSEN) segmentation, keeping FIN and PSH on the last and CWR on the first segment. Grow the reassembly buffer to the 64K a large send frame can occupy and raise a transmit error interrupt when a frame cannot be sent. Guests that enable these offloads otherwise put frames with zero checksums on the wire.
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Complete descriptor-requested IPv4, TCP and UDP checksums on transmit, including VLAN-tagged frames and scatter/gather reassembled frames, and implement TCP large send (LGSEN) segmentation, keeping FIN and PSH on the last and CWR on the first segment. Grow the reassembly buffer to the 64K a large send frame can occupy and raise a transmit error interrupt when a frame cannot be sent.
Guests that enable these offloads otherwise put frames with zero checksums on the wire.