netdev - bonding xmit

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Date:	Sat, 12 Nov 2011 21:55:42 -0500
From:	Simon Chen <simonchennj@...il.com>
To:	netdev@...r.kernel.org
Subject: bonding xmit_policy

Hi folks,

It looks like that there are three entries in xmit_policy (hashing for
deciding egress phy int) for bonded interfaces:

const struct bond_parm_tbl xmit_hashtype_tbl[] = {
{       "layer2",               BOND_XMIT_POLICY_LAYER2},
{       "layer3+4",             BOND_XMIT_POLICY_LAYER34},
{       "layer2+3",             BOND_XMIT_POLICY_LAYER23},
{       NULL,                   -1},
};

We can set the xmit_policy either at module initiation, or later via
/sys. However, this xmit_policy isn't really read anywhere. Are
different policies really implemented?

Thanks.
-Simon
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