netdev - Re: [RFC PATCH 7/7] net: ixgbe: add support for tc

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Message-Id: <20160201.181715.1355993690912736292.davem@davemloft.net>
Date:	Mon, 01 Feb 2016 18:17:15 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	john.fastabend@...il.com
Cc:	anjali.singhai@...el.com, jesse.brandeburg@...el.com,
	jhs@...atatu.com, ast@...com, donald.c.skidmore@...el.com,
	horms@...ge.net.au, netdev@...r.kernel.org, tgraf@...g.ch
Subject: Re: [RFC PATCH 7/7] net: ixgbe: add support for tc_u32 offload

From: John Fastabend <john.fastabend@...il.com>
Date: Sun, 31 Jan 2016 17:53:10 -0800

> +			ixgbe_jump_tables[uhtid] = nexthdr->jump;

I can't figure out what protects concurrent accesses to this shared
ixgbe_jump_table[].  Is RTNL held here?  If so it's likely that
GFP_ATOMIC can be changed to GFP_KERNEL in this function.