From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH] librte_ether: use
	RTE_ETH_VALID_PORTID_OR_ERR_RET to check port_id
Date: Fri, 13 May 2016 18:20:31 +0200
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To: Mauricio Vasquez B <mauricio.vasquezbernal@studenti.polito.it>
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2016-04-29 17:23, Mauricio Vasquez B:
> The RTE_ETH_VALID_PORTID_OR_ERR_RET macro is used in some places
> to check if a port id is valid or not. This commit makes use of it in
> some new parts of the code.

There are other occurences:
	rte_eth_dev_socket_id
	rte_eth_add_rx_callback
	rte_eth_add_tx_callback
	rte_eth_remove_rx_callback
	rte_eth_remove_tx_callback
I think it could be done also in examples/ethtool/lib.