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Date: Mon, 28 Jun 2010 21:19:30 -0700 (PDT) From: David Miller <davem@...emloft.net> To: john.r.fastabend@...el.com Cc: netdev@...r.kernel.org, jeffrey.t.kirsher@...el.com Subject: Re: [RFC net-2.6 PATCH] ixgbe: need to purge skb qdisc lists when changing real_num_tx_queues From: John Fastabend <john.r.fastabend@...el.com> Date: Sun, 20 Jun 2010 22:25:20 -0700 > This patch exports dev_deactivate() symbol. > > The qdisc needs to be purged when real_num_tx_queues is > changed so that skbs do not hit ndo_start_xmit with > queue_mappings corresponding to tx_rings already freed. > > real_num_tx_queues is changed when dynamically enabling or > disabling DCB or FCoE. To purge the qdisc use dev_deactivate(). > > Signed-off-by: John Fastabend <john.r.fastabend@...el.com> Whatever it is that needs to happen when real_num_tx_queues changes outght to be transparent to drivers. Therefore we should hide all of these details behind a well named interface drivers can call when they need to change real_num_tx_queues. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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