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qeth: IFF_PROMISC flag to BRIDGE PORT mode

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OSA and HiperSocket devices do not support promiscuous mode proper,
but they support "BRIDGE PORT" mode that is functionally similar.
This update introduces sysfs attribute that, when set, makes the driver
try to "reflect" setting and resetting of the IFF_PROMISC flag on the
interface into setting and resetting PRIMARY or SECONDARY bridge port
role on the underlying OSA or HiperSocket device.

Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eugene Crosser
2015-05-18 14:27:55 +02:00
committed by David S. Miller
parent d3c29a5c3f
commit 0db587b065
3 changed files with 95 additions and 3 deletions
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40
drivers/s390/net/qeth_l2_main.c
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@@ -683,6 +683,39 @@ static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
return rc ? -EINVAL : 0;
}
static void qeth_promisc_to_bridge(struct qeth_card *card)
{
struct net_device *dev = card->dev;
enum qeth_ipa_promisc_modes promisc_mode;
int role;
int rc;
QETH_CARD_TEXT(card, 3, "pmisc2br");
if (!card->options.sbp.reflect_promisc)
return;
promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
: SET_PROMISC_MODE_OFF;
if (promisc_mode == card->info.promisc_mode)
return;
if (promisc_mode == SET_PROMISC_MODE_ON) {
if (card->options.sbp.reflect_promisc_primary)
role = QETH_SBP_ROLE_PRIMARY;
else
role = QETH_SBP_ROLE_SECONDARY;
} else
role = QETH_SBP_ROLE_NONE;
rc = qeth_bridgeport_setrole(card, role);
QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
(promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
if (!rc) {
card->options.sbp.role = role;
card->info.promisc_mode = promisc_mode;
}
}
static void qeth_l2_set_multicast_list(struct net_device *dev)
{
struct qeth_card *card = dev->ml_priv;
@@ -704,9 +737,10 @@ static void qeth_l2_set_multicast_list(struct net_device *dev)
qeth_l2_add_mc(card, ha->addr, 1);
spin_unlock_bh(&card->mclock);
if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
return;
qeth_setadp_promisc_mode(card);
if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
qeth_setadp_promisc_mode(card);
else
qeth_promisc_to_bridge(card);
}
static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)