From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- net/openvswitch/dp_notify.c | 86 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 net/openvswitch/dp_notify.c (limited to 'net/openvswitch/dp_notify.c') diff --git a/net/openvswitch/dp_notify.c b/net/openvswitch/dp_notify.c new file mode 100644 index 000000000..a2af90ee9 --- /dev/null +++ b/net/openvswitch/dp_notify.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2007-2012 Nicira, Inc. + */ + +#include +#include +#include + +#include "datapath.h" +#include "vport-internal_dev.h" +#include "vport-netdev.h" + +static void dp_detach_port_notify(struct vport *vport) +{ + struct sk_buff *notify; + struct datapath *dp; + + dp = vport->dp; + notify = ovs_vport_cmd_build_info(vport, ovs_dp_get_net(dp), + 0, 0, OVS_VPORT_CMD_DEL); + ovs_dp_detach_port(vport); + if (IS_ERR(notify)) { + genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0, + 0, PTR_ERR(notify)); + return; + } + + genlmsg_multicast_netns(&dp_vport_genl_family, + ovs_dp_get_net(dp), notify, 0, + 0, GFP_KERNEL); +} + +void ovs_dp_notify_wq(struct work_struct *work) +{ + struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work); + struct datapath *dp; + + ovs_lock(); + list_for_each_entry(dp, &ovs_net->dps, list_node) { + int i; + + for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) { + struct vport *vport; + struct hlist_node *n; + + hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) { + if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL) + continue; + + if (!(netif_is_ovs_port(vport->dev))) + dp_detach_port_notify(vport); + } + } + } + ovs_unlock(); +} + +static int dp_device_event(struct notifier_block *unused, unsigned long event, + void *ptr) +{ + struct ovs_net *ovs_net; + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct vport *vport = NULL; + + if (!ovs_is_internal_dev(dev)) + vport = ovs_netdev_get_vport(dev); + + if (!vport) + return NOTIFY_DONE; + + if (event == NETDEV_UNREGISTER) { + /* upper_dev_unlink and decrement promisc immediately */ + ovs_netdev_detach_dev(vport); + + /* schedule vport destroy, dev_put and genl notification */ + ovs_net = net_generic(dev_net(dev), ovs_net_id); + queue_work(system_percpu_wq, &ovs_net->dp_notify_work); + } + + return NOTIFY_DONE; +} + +struct notifier_block ovs_dp_device_notifier = { + .notifier_call = dp_device_event +}; -- cgit v1.3.1