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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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662880f442
Allow GRO path to "consume" checksums provided in CHECKSUM_UNNECESSARY and to report new checksums verfied for use in fallback to normal path. Change GRO checksum path to track csum_level using a csum_cnt field in NAPI_GRO_CB. On GRO initialization, if ip_summed is CHECKSUM_UNNECESSARY set NAPI_GRO_CB(skb)->csum_cnt to skb->csum_level + 1. For each checksum verified, decrement NAPI_GRO_CB(skb)->csum_cnt while its greater than zero. If a checksum is verfied and NAPI_GRO_CB(skb)->csum_cnt == 0, we have verified a deeper checksum than originally indicated in skbuf so increment csum_level (or initialize to CHECKSUM_UNNECESSARY if ip_summed is CHECKSUM_NONE or CHECKSUM_COMPLETE). Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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