p.clear()
		packetPool.Put(p)
	} else {
		p.bufOffset += n
	}

	return n, from, nil
}

// setReadBuffer sets a soft limit on the number of bytes available to read
// from the pipe.
func (pq *packetQueue) setReadBuffer(bytes int) error {
	if bytes <= 0 {
		return os.NewSyscallError("setReadBuffer", syscall.EINVAL)
	}
	q := pq.get() // Use the queue as a lock.
	q.readBufferBytes = bytes
	pq.put(q)

	}
	return nil
}

// SetReadBuffer sets the size of the operating system's
// receive buffer associated with the connection.
func (c *conn) SetReadBuffer(bytes int) error {
	if !c.ok() {
		return syscall.EINVAL
	}
	if err := setReadBuffer(c.fd, bytes); err != nil {
		return &OpError{Op: "set", Net: c.fd.net, Source: nil, Addr: c.fd.laddr, Err: err}
	}

		{"(*IPConn).ReadFrom", Method, 0},
		{"(*IPConn).ReadFromIP", Method, 0},
		{"(*IPConn).ReadMsgIP", Method, 1},
		{"(*IPConn).RemoteAddr", Method, 0},
		{"(*IPConn).SetDeadline", Method, 0},
		{"(*IPConn).SetReadBuffer", Method, 0},
		{"(*IPConn).SetReadDeadline", Method, 0},
		{"(*IPConn).SetWriteBuffer", Method, 0},
		{"(*IPConn).SetWriteDeadline", Method, 0},
		{"(*IPConn).SyscallConn", Method, 9},