Re: [PATCH] macsec: Support 32bit PN netlink attribute for XPN links

[David Miller]

From: Era Mayflower <mayflowerera@xxxxxxxxx>
Date: Tue, 16 Jun 2020 00:41:14 +0900

> +	if (tb_sa[MACSEC_SA_ATTR_PN]) {

validate_add_rxsa() requires that MACSET_SA_ATTR_PN be non-NULL, so
you don't need to add this check here.