From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:23384 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727019AbgIJRYK (ORCPT ); Thu, 10 Sep 2020 13:24:10 -0400 From: Julian Wiedmann Subject: [PATCH net-next 7/8] s390/qeth: implement ndo_bridge_getlink for learning_sync Date: Thu, 10 Sep 2020 19:23:50 +0200 Message-Id: <20200910172351.5622-8-jwi@linux.ibm.com> In-Reply-To: <20200910172351.5622-1-jwi@linux.ibm.com> References: <20200910172351.5622-1-jwi@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: David Miller , Jakub Kicinski Cc: netdev , linux-s390 , Heiko Carstens , Ursula Braun , Karsten Graul , Julian Wiedmann , Alexandra Winter , Roopa Prabhu , Nikolay Aleksandrov , Jiri Pirko , Ivan Vecera From: Alexandra Winter Documentation/networking/switchdev.txt and 'man bridge' indicate that the learning_sync bridge attribute is used to indicate whether a given device will sync MAC addresses learned on its device port to a master bridge FDB. learning_sync attribute can not be read while interface is offline (down). See 'commit e6e771b3d897 ("s390/qeth: detach netdevice while card is offline")' We return EOPNOTSUPP and not EONODEV in this case, because EONOTSUPP is the only rc that is tolerated by 'bridge -d link show'. Signed-off-by: Alexandra Winter Reviewed-by: Julian Wiedmann Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_l2_main.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index ef2962e03546..338bc62556cf 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -33,6 +33,7 @@ static void qeth_bridge_state_change(struct qeth_card *card, struct qeth_ipa_cmd *cmd); static void qeth_addr_change_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd); +static bool qeth_bridgeport_is_in_use(struct qeth_card *card); static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); static void qeth_l2_vnicc_init(struct qeth_card *card); static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, @@ -836,6 +837,25 @@ static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable) return rc; } +static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, + struct net_device *dev, u32 filter_mask, + int nlflags) +{ + struct qeth_priv *priv = netdev_priv(dev); + struct qeth_card *card = dev->ml_priv; + u16 mode = BRIDGE_MODE_UNDEF; + + /* Do not even show qeth devs that cannot do bridge_setlink */ + if (!priv->brport_hw_features || !netif_device_present(dev) || + qeth_bridgeport_is_in_use(card)) + return -EOPNOTSUPP; + + return ndo_dflt_bridge_getlink(skb, pid, seq, dev, + mode, priv->brport_features, + priv->brport_hw_features, + nlflags, filter_mask, NULL); +} + static const struct net_device_ops qeth_l2_netdev_ops = { .ndo_open = qeth_open, .ndo_stop = qeth_stop, @@ -851,7 +871,8 @@ static const struct net_device_ops qeth_l2_netdev_ops = { .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, .ndo_tx_timeout = qeth_tx_timeout, .ndo_fix_features = qeth_fix_features, - .ndo_set_features = qeth_set_features + .ndo_set_features = qeth_set_features, + .ndo_bridge_getlink = qeth_l2_bridge_getlink, }; static const struct net_device_ops qeth_osn_netdev_ops = { -- 2.17.1