Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 272 insertions, 0 deletions

diff --git a/drivers/net/vxlan/vxlan_multicast.c b/drivers/net/vxlan/vxlan_multicast.c
new file mode 100644
index 000000000..a7f2d67dc
--- /dev/null
+++ b/drivers/net/vxlan/vxlan_multicast.c
@@ -0,0 +1,272 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *	Vxlan multicast group handling
+ *
+ */
+#include <linux/kernel.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <linux/igmp.h>
+#include <net/vxlan.h>
+
+#include "vxlan_private.h"
+
+/* Update multicast group membership when first VNI on
+ * multicast address is brought up
+ */
+int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
+		    int rifindex)
+{
+	union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
+	int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
+	int ret = -EINVAL;
+	struct sock *sk;
+
+	if (ip->sa.sa_family == AF_INET) {
+		struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
+		struct ip_mreqn mreq = {
+			.imr_multiaddr.s_addr	= ip->sin.sin_addr.s_addr,
+			.imr_ifindex		= ifindex,
+		};
+
+		sk = sock4->sock->sk;
+		lock_sock(sk);
+		ret = ip_mc_join_group(sk, &mreq);
+		release_sock(sk);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
+
+		sk = sock6->sock->sk;
+		lock_sock(sk);
+		ret = ipv6_stub->ipv6_sock_mc_join(sk, ifindex,
+						   &ip->sin6.sin6_addr);
+		release_sock(sk);
+#endif
+	}
+
+	return ret;
+}
+
+int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
+		     int rifindex)
+{
+	union vxlan_addr *ip = (rip ? : &vxlan->default_dst.remote_ip);
+	int ifindex = (rifindex ? : vxlan->default_dst.remote_ifindex);
+	int ret = -EINVAL;
+	struct sock *sk;
+
+	if (ip->sa.sa_family == AF_INET) {
+		struct vxlan_sock *sock4 = rtnl_dereference(vxlan->vn4_sock);
+		struct ip_mreqn mreq = {
+			.imr_multiaddr.s_addr	= ip->sin.sin_addr.s_addr,
+			.imr_ifindex		= ifindex,
+		};
+
+		sk = sock4->sock->sk;
+		lock_sock(sk);
+		ret = ip_mc_leave_group(sk, &mreq);
+		release_sock(sk);
+#if IS_ENABLED(CONFIG_IPV6)
+	} else {
+		struct vxlan_sock *sock6 = rtnl_dereference(vxlan->vn6_sock);
+
+		sk = sock6->sock->sk;
+		lock_sock(sk);
+		ret = ipv6_stub->ipv6_sock_mc_drop(sk, ifindex,
+						   &ip->sin6.sin6_addr);
+		release_sock(sk);
+#endif
+	}
+
+	return ret;
+}
+
+static bool vxlan_group_used_match(union vxlan_addr *ip, int ifindex,
+				   union vxlan_addr *rip, int rifindex)
+{
+	if (!vxlan_addr_multicast(rip))
+		return false;
+
+	if (!vxlan_addr_equal(rip, ip))
+		return false;
+
+	if (rifindex != ifindex)
+		return false;
+
+	return true;
+}
+
+static bool vxlan_group_used_by_vnifilter(struct vxlan_dev *vxlan,
+					  union vxlan_addr *ip, int ifindex)
+{
+	struct vxlan_vni_group *vg = rtnl_dereference(vxlan->vnigrp);
+	struct vxlan_vni_node *v, *tmp;
+
+	if (vxlan_group_used_match(ip, ifindex,
+				   &vxlan->default_dst.remote_ip,
+				   vxlan->default_dst.remote_ifindex))
+		return true;
+
+	list_for_each_entry_safe(v, tmp, &vg->vni_list, vlist) {
+		if (!vxlan_addr_multicast(&v->remote_ip))
+			continue;
+
+		if (vxlan_group_used_match(ip, ifindex,
+					   &v->remote_ip,
+					   vxlan->default_dst.remote_ifindex))
+			return true;
+	}
+
+	return false;
+}
+
+/* See if multicast group is already in use by other ID */
+bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev,
+		      __be32 vni, union vxlan_addr *rip, int rifindex)
+{
+	union vxlan_addr *ip = (rip ? : &dev->default_dst.remote_ip);
+	int ifindex = (rifindex ? : dev->default_dst.remote_ifindex);
+	struct vxlan_dev *vxlan;
+	struct vxlan_sock *sock4;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct vxlan_sock *sock6;
+#endif
+	unsigned short family = dev->default_dst.remote_ip.sa.sa_family;
+
+	sock4 = rtnl_dereference(dev->vn4_sock);
+
+	/* The vxlan_sock is only used by dev, leaving group has
+	 * no effect on other vxlan devices.
+	 */
+	if (family == AF_INET && sock4 && refcount_read(&sock4->refcnt) == 1)
+		return false;
+
+#if IS_ENABLED(CONFIG_IPV6)
+	sock6 = rtnl_dereference(dev->vn6_sock);
+	if (family == AF_INET6 && sock6 && refcount_read(&sock6->refcnt) == 1)
+		return false;
+#endif
+
+	list_for_each_entry(vxlan, &vn->vxlan_list, next) {
+		if (!netif_running(vxlan->dev) || vxlan == dev)
+			continue;
+
+		if (family == AF_INET &&
+		    rtnl_dereference(vxlan->vn4_sock) != sock4)
+			continue;
+#if IS_ENABLED(CONFIG_IPV6)
+		if (family == AF_INET6 &&
+		    rtnl_dereference(vxlan->vn6_sock) != sock6)
+			continue;
+#endif
+		if (vxlan->cfg.flags & VXLAN_F_VNIFILTER) {
+			if (!vxlan_group_used_by_vnifilter(vxlan, ip, ifindex))
+				continue;
+		} else {
+			if (!vxlan_group_used_match(ip, ifindex,
+						    &vxlan->default_dst.remote_ip,
+						    vxlan->default_dst.remote_ifindex))
+				continue;
+		}
+
+		return true;
+	}
+
+	return false;
+}
+
+static int vxlan_multicast_join_vnigrp(struct vxlan_dev *vxlan)
+{
+	struct vxlan_vni_group *vg = rtnl_dereference(vxlan->vnigrp);
+	struct vxlan_vni_node *v, *tmp, *vgood = NULL;
+	int ret = 0;
+
+	list_for_each_entry_safe(v, tmp, &vg->vni_list, vlist) {
+		if (!vxlan_addr_multicast(&v->remote_ip))
+			continue;
+		/* skip if address is same as default address */
+		if (vxlan_addr_equal(&v->remote_ip,
+				     &vxlan->default_dst.remote_ip))
+			continue;
+		ret = vxlan_igmp_join(vxlan, &v->remote_ip, 0);
+		if (ret == -EADDRINUSE)
+			ret = 0;
+		if (ret)
+			goto out;
+		vgood = v;
+	}
+out:
+	if (ret) {
+		list_for_each_entry_safe(v, tmp, &vg->vni_list, vlist) {
+			if (!vxlan_addr_multicast(&v->remote_ip))
+				continue;
+			if (vxlan_addr_equal(&v->remote_ip,
+					     &vxlan->default_dst.remote_ip))
+				continue;
+			vxlan_igmp_leave(vxlan, &v->remote_ip, 0);
+			if (v == vgood)
+				break;
+		}
+	}
+
+	return ret;
+}
+
+static int vxlan_multicast_leave_vnigrp(struct vxlan_dev *vxlan)
+{
+	struct vxlan_net *vn = net_generic(vxlan->net, vxlan_net_id);
+	struct vxlan_vni_group *vg = rtnl_dereference(vxlan->vnigrp);
+	struct vxlan_vni_node *v, *tmp;
+	int last_err = 0, ret;
+
+	list_for_each_entry_safe(v, tmp, &vg->vni_list, vlist) {
+		if (vxlan_addr_multicast(&v->remote_ip) &&
+		    !vxlan_group_used(vn, vxlan, v->vni, &v->remote_ip,
+				      0)) {
+			ret = vxlan_igmp_leave(vxlan, &v->remote_ip, 0);
+			if (ret)
+				last_err = ret;
+		}
+	}
+
+	return last_err;
+}
+
+int vxlan_multicast_join(struct vxlan_dev *vxlan)
+{
+	int ret = 0;
+
+	if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip)) {
+		ret = vxlan_igmp_join(vxlan, &vxlan->default_dst.remote_ip,
+				      vxlan->default_dst.remote_ifindex);
+		if (ret == -EADDRINUSE)
+			ret = 0;
+		if (ret)
+			return ret;
+	}
+
+	if (vxlan->cfg.flags & VXLAN_F_VNIFILTER)
+		return vxlan_multicast_join_vnigrp(vxlan);
+
+	return 0;
+}
+
+int vxlan_multicast_leave(struct vxlan_dev *vxlan)
+{
+	struct vxlan_net *vn = net_generic(vxlan->net, vxlan_net_id);
+	int ret = 0;
+
+	if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip) &&
+	    !vxlan_group_used(vn, vxlan, 0, NULL, 0)) {
+		ret = vxlan_igmp_leave(vxlan, &vxlan->default_dst.remote_ip,
+				       vxlan->default_dst.remote_ifindex);
+		if (ret)
+			return ret;
+	}
+
+	if (vxlan->cfg.flags & VXLAN_F_VNIFILTER)
+		return vxlan_multicast_leave_vnigrp(vxlan);
+
+	return 0;
+}