[vsock] Virtual socket commands

The TX boards use virtual sockets (VSOCKs) as the standard communication interface between protocol layers. Use the [vsock] command to view the vsocks currently defined on the board. The following table lists the [vsock] commands:

[vsock] command	Description
info	Displays VSOCK top-level information.
resctx	Displays a memory area as a resource context (RESCTX).
ress	Displays summary information for all resources, including: Res Type: Type of resource identifier. Name: Name of the resource. TX Frames: Total number of packets transmitted over the resource. TX Fails: Total number of failed transmit attempts over the resource. RX Frames: Total number of packets received over the resource. RX Drops: Total number of receive indications that the resource dropped. Last Error: Error code identifying the reason for the last error the resource detected. MaxTX Time: Maximum number of milliseconds that the resource held a transmit packet. MaxRX Time: Maximum number of milliseconds that the resource held a receive packet.
rxtxd	Displays a memory area as an RX/TX descriptor (RXTXD).
txpend	Displays all transmits currently pending for the given VSOCK.
vsockctx	Displays a memory area as a VSOCK control context (VSOCKCTX).
vsocks	Displays summary information for all VSOCKs, including: VSOCK Address: Memory address for the VSOCK control context. Owner: Name of the task that owns the VSOCK. Res Type: Type of resource to which VSOCK is attached. TX Pnd: Count of the currently pending transmits over the VSOCK. TX Frames: Total number of packets transmitted over the VSOCK. TX Fails: Total number of failed transmit attempts over the VSOCK. RX Frames: Total number of packets received over the VSOCK. RX Fails: Total number of receive indications with errors detected. Last Error: Error code identifying the reason for the last error that VSOCK detected. MaxTX Time: Maximum number of milliseconds to TX over the VSOCK. MaxRX Time: Maximum number of milliseconds for any RX over the VSOCK.