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Randall Stewart authored
In reviewing tcp_lro.c we have a possibility that some drives may send a mbuf into LRO without making sure that the checksum passes. Some drivers actually are aware of this and do not call lro when the csum failed, others do not do this and thus could end up sending data up that we think has a checksum passing when it does not. This change will fix that situation by properly verifying that the mbuf has the correct markings (CSUM VALID bits as well as csum in mbuf header is set to 0xffff). Reviewed by: tuexen, hselasky, gallatin Sponsored by: Netflix Inc. Differential Revision: https://reviews.freebsd.org/D31155
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