rpc_max_payload(9) centos man page | unix.com

RPC_MAX_PAYLOAD(9)						 Linux Networking						RPC_MAX_PAYLOAD(9)

NAME
       rpc_max_payload - Get maximum payload size for a transport, in bytes

SYNOPSIS
       size_t rpc_max_payload(struct rpc_clnt * clnt);

ARGUMENTS
       clnt
	   RPC client to query

DESCRIPTION
       For stream transports, this is one RPC record fragment (see RFC 1831), as we don't support multi-record requests yet. For datagram
       transports, this is the size of an IP packet minus the IP, UDP, and RPC header sizes.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							RPC_MAX_PAYLOAD(9)