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cxgb3 - enable lro control through ethtool 

Implement ethtool's get_flags and set_flags methods.
It enables ethtool to control the LRO settings.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
hifive-unleashed-5.1
Divy Le Ray 2008-10-28 22:40:32 -07:00 committed by Jeff Garzik
parent bc79fc8409
commit 04ecb07241
1 changed files with 57 additions and 12 deletions
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69
drivers/net/cxgb3/cxgb3_main.c
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@ -493,6 +493,36 @@ static void enable_all_napi(struct adapter *adap)
napi_enable(&adap->sge.qs[i].napi);
}
/**
* set_qset_lro - Turn a queue set's LRO capability on and off
* @dev: the device the qset is attached to
* @qset_idx: the queue set index
* @val: the LRO switch
*
* Sets LRO on or off for a particular queue set.
* the device's features flag is updated to reflect the LRO
* capability when all queues belonging to the device are
* in the same state.
*/
static void set_qset_lro(struct net_device *dev, int qset_idx, int val)
{
struct port_info *pi = netdev_priv(dev);
struct adapter *adapter = pi->adapter;
int i, lro_on = 1;
adapter->params.sge.qset[qset_idx].lro = !!val;
adapter->sge.qs[qset_idx].lro_enabled = !!val;
/* let ethtool report LRO on only if all queues are LRO enabled */
for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; ++i)
lro_on &= adapter->params.sge.qset[i].lro;
if (lro_on)
dev->features |= NETIF_F_LRO;
else
dev->features &= ~NETIF_F_LRO;
}
/**
* setup_sge_qsets - configure SGE Tx/Rx/response queues
* @adap: the adapter
@ -516,8 +546,7 @@ static int setup_sge_qsets(struct adapter *adap)
pi->qs = &adap->sge.qs[pi->first_qset];
for (j = pi->first_qset; j < pi->first_qset + pi->nqsets;
++j, ++qset_idx) {
if (!pi->rx_csum_offload)
adap->params.sge.qset[qset_idx].lro = 0;
set_qset_lro(dev, qset_idx, pi->rx_csum_offload);
err = t3_sge_alloc_qset(adap, qset_idx, 1,
(adap->flags & USING_MSIX) ? qset_idx + 1 :
irq_idx,
@ -1632,13 +1661,10 @@ static int set_rx_csum(struct net_device *dev, u32 data)
p->rx_csum_offload = data;
if (!data) {
struct adapter *adap = p->adapter;
int i;
for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) {
adap->params.sge.qset[i].lro = 0;
adap->sge.qs[i].lro_enabled = 0;
}
for (i = p->first_qset; i < p->first_qset + p->nqsets; i++)
set_qset_lro(dev, i, 0);
}
return 0;
}
@ -1793,6 +1819,25 @@ static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
memset(&wol->sopass, 0, sizeof(wol->sopass));
}
static int cxgb3_set_flags(struct net_device *dev, u32 data)
{
struct port_info *pi = netdev_priv(dev);
int i;
if (data & ETH_FLAG_LRO) {
if (!pi->rx_csum_offload)
return -EINVAL;
for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; i++)
set_qset_lro(dev, i, 1);
} else
for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; i++)
set_qset_lro(dev, i, 0);
return 0;
}
static const struct ethtool_ops cxgb_ethtool_ops = {
.get_settings = get_settings,
.set_settings = set_settings,
@ -1822,6 +1867,8 @@ static const struct ethtool_ops cxgb_ethtool_ops = {
.get_regs = get_regs,
.get_wol = get_wol,
.set_tso = ethtool_op_set_tso,
.get_flags = ethtool_op_get_flags,
.set_flags = cxgb3_set_flags,
};
static int in_range(int val, int lo, int hi)
@ -1938,11 +1985,9 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr)
}
}
}
if (t.lro >= 0) {
struct sge_qset *qs = &adapter->sge.qs[t.qset_idx];
q->lro = t.lro;
qs->lro_enabled = t.lro;
}
if (t.lro >= 0)
set_qset_lro(dev, t.qset_idx, t.lro);
break;
}
case CHELSIO_GET_QSET_PARAMS:{