nvmf: fix build with __assert_unreachable() addition to userland

<assert.h> now has a usable definition, so we don't need to shim it out
in the nvmf header anymore.

Reviewed by: emaste, jhb
Differe

nvmf: fix build with __assert_unreachable() addition to userland

<assert.h> now has a usable definition, so we don't need to shim it out
in the nvmf header anymore.

Reviewed by: emaste, jhb
Differential Revision: https://reviews.freebsd.org/D48078

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nvmf_tcp: Don't require a data digest for PDUs without data

If a PDU (such as a Command Capsule PDU) on a connection that has
enabled data digests does not have a data section, it will not have
the

nvmf_tcp: Don't require a data digest for PDUs without data

If a PDU (such as a Command Capsule PDU) on a connection that has
enabled data digests does not have a data section, it will not have
the the PDU data digest flag set. The previous check was requiring
this flag to be present on all PDU types that support data sections
even if no data was included in the PDU.

Sponsored by: Chelsio Communications

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nvmf_tcp: Correct tests for PDU direction

Add parentheses to ensure the correct order of operations.

Reported by: GCC

nvmf_tcp.h: Internal header shared between userspace and kernel

- Helper macros for specific SGL types used with the TCP transport

- An inline function which validates various fields in TCP PDUs

R

nvmf_tcp.h: Internal header shared between userspace and kernel

- Helper macros for specific SGL types used with the TCP transport

- An inline function which validates various fields in TCP PDUs

Reviewed by: imp
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D44708

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