John Baldwin 46bee8043e cxgbei: Support DDP for target I/O S/G lists with more than one entry.
A CAM target layer I/O CCB can use a S/G list of virtual address ranges
to describe its data buffer.  This change adds zero-copy receive support
for such requests.

Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D29908
2021-05-14 12:17:06 -07:00
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