Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "The most significant set of changes is the per netns RTNL. The new
  behavior is disabled by default, regression risk should be contained.

  Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
  default value from PTP_1588_CLOCK_KVM, as the first is intended to be
  a more reliable replacement for the latter.

  Core:

   - Started a very large, in-progress, effort to make the RTNL lock
     scope per network-namespace, thus reducing the lock contention
     significantly in the containerized use-case, comprising:
       - RCU-ified some relevant slices of the FIB control path
       - introduce basic per netns locking helpers
       - namespacified the IPv4 address hash table
       - remove rtnl_register{,_module}() in favour of
         rtnl_register_many()
       - refactor rtnl_{new,del,set}link() moving as much validation as
         possible out of RTNL lock
       - convert all phonet doit() and dumpit() handlers to RCU
       - convert IPv4 addresses manipulation to per-netns RTNL
       - convert virtual interface creation to per-netns RTNL
     the per-netns lock infrastructure is guarded by the
     CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.

   - Introduce NAPI suspension, to efficiently switching between busy
     polling (NAPI processing suspended) and normal processing.

   - Migrate the IPv4 routing input, output and control path from direct
     ToS usage to DSCP macros. This is a work in progress to make ECN
     handling consistent and reliable.

   - Add drop reasons support to the IPv4 rotue input path, allowing
     better introspection in case of packets drop.

   - Make FIB seqnum lockless, dropping RTNL protection for read access.

   - Make inet{,v6} addresses hashing less predicable.

   - Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
     and timestamps

  Things we sprinkled into general kernel code:

   - Add small file operations for debugfs, to reduce the struct ops
     size.

   - Refactoring and optimization for the implementation of page_frag
     API, This is a preparatory work to consolidate the page_frag
     implementation.

  Netfilter:

   - Optimize set element transactions to reduce memory consumption

   - Extended netlink error reporting for attribute parser failure.

   - Make legacy xtables configs user selectable, giving users the
     option to configure iptables without enabling any other config.

   - Address a lot of false-positive RCU issues, pointed by recent CI
     improvements.

  BPF:

   - Put xsk sockets on a struct diet and add various cleanups. Overall,
     this helps to bump performance by 12% for some workloads.

   - Extend BPF selftests to increase coverage of XDP features in
     combination with BPF cpumap.

   - Optimize and homogenize bpf_csum_diff helper for all archs and also
     add a batch of new BPF selftests for it.

   - Extend netkit with an option to delegate skb->{mark,priority}
     scrubbing to its BPF program.

   - Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
     programs.

  Protocols:

   - Introduces 4-tuple hash for connected udp sockets, speeding-up
     significantly connected sockets lookup.

   - Add a fastpath for some TCP timers that usually expires after
     close, the socket lock contention.

   - Add inbound and outbound xfrm state caches to speed up state
     lookups.

   - Avoid sending MPTCP advertisements on stale subflows, reducing
     risks on loosing them.

   - Make neighbours table flushing more scalable, maintaining per
     device neigh lists.

  Driver API:

   - Introduce a unified interface to configure transmission H/W
     shaping, and expose it to user-space via generic-netlink.

   - Add support for per-NAPI config via netlink. This makes napi
     configuration persistent across queues removal and re-creation.
     Requires driver updates, currently supported drivers are:
     nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.

   - Add ethtool support for writing SFP / PHY firmware blocks.

   - Track RSS context allocation from ethtool core.

   - Implement support for mirroring to DSA CPU port, via TC mirror
     offload.

   - Consolidate FDB updates notification, to avoid duplicates on
     device-specific entries.

   - Expose DPLL clock quality level to the user-space.

   - Support master-slave PHY config via device tree.

  Tests and tooling:

   - forwarding: introduce deferred commands, to simplify the cleanup
     phase

  Drivers:

   - Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
     Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
     IRQs and queues to NAPI IDs, allowing busy polling and better
     introspection.

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - mlx5:
           - a large refactor to implement support for cross E-Switch
             scheduling
           - refactor H/W conter management to let it scale better
           - H/W GRO cleanups
      - Intel (100G, ice)::
         - add support for ethtool reset
         - implement support for per TX queue H/W shaping
      - AMD/Solarflare:
         - implement per device queue stats support
      - Broadcom (bnxt):
         - improve wildcard l4proto on IPv4/IPv6 ntuple rules
      - Marvell Octeon:
         - Add representor support for each Resource Virtualization Unit
           (RVU) device.
      - Hisilicon:
         - add support for the BMC Gigabit Ethernet
      - IBM (EMAC):
         - driver cleanup and modernization
      - Cisco (VIC):
         - raise the queues number limit to 256

   - Ethernet virtual:
      - Google vNIC:
         - implement page pool support
      - macsec:
         - inherit lower device's features and TSO limits when
           offloading
      - virtio_net:
         - enable premapped mode by default
         - support for XDP socket(AF_XDP) zerocopy TX
      - wireguard:
         - set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
           packets.

   - Ethernet NICs embedded and virtual:
      - Broadcom ASP:
         - enable software timestamping
      - Freescale:
         - add enetc4 PF driver
      - MediaTek: Airoha SoC:
         - implement BQL support
      - RealTek r8169:
         - enable TSO by default on r8168/r8125
         - implement extended ethtool stats
      - Renesas AVB:
         - enable TX checksum offload
      - Synopsys (stmmac):
         - support header splitting for vlan tagged packets
         - move common code for DWMAC4 and DWXGMAC into a separate FPE
           module.
         - add dwmac driver support for T-HEAD TH1520 SoC
      - Synopsys (xpcs):
         - driver refactor and cleanup
      - TI:
         - icssg_prueth: add VLAN offload support
      - Xilinx emaclite:
         - add clock support

   - Ethernet switches:
      - Microchip:
         - implement support for the lan969x Ethernet switch family
         - add LAN9646 switch support to KSZ DSA driver

   - Ethernet PHYs:
      - Marvel: 88q2x: enable auto negotiation
      - Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2

   - PTP:
      - Add support for the Amazon virtual clock device
      - Add PtP driver for s390 clocks

   - WiFi:
      - mac80211
         - EHT 1024 aggregation size for transmissions
         - new operation to indicate that a new interface is to be added
         - support radio separation of multi-band devices
         - move wireless extension spy implementation to libiw
      - Broadcom:
         - brcmfmac: optional LPO clock support
      - Microchip:
         - add support for Atmel WILC3000
      - Qualcomm (ath12k):
         - firmware coredump collection support
         - add debugfs support for a multitude of statistics
      - Qualcomm (ath5k):
         -  Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
      - Realtek:
         - rtw88: 8821au and 8812au USB adapters support
         - rtw89: add thermal protection
         - rtw89: fine tune BT-coexsitence to improve user experience
         - rtw89: firmware secure boot for WiFi 6 chip

   - Bluetooth
      - add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
        0x13d3:0x3623
      - add Realtek RTL8852BE support for id Foxconn 0xe123
      - add MediaTek MT7920 support for wireless module ids
      - btintel_pcie: add handshake between driver and firmware
      - btintel_pcie: add recovery mechanism
      - btnxpuart: add GPIO support to power save feature"

* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
  mm: page_frag: fix a compile error when kernel is not compiled
  Documentation: tipc: fix formatting issue in tipc.rst
  selftests: nic_performance: Add selftest for performance of NIC driver
  selftests: nic_link_layer: Add selftest case for speed and duplex states
  selftests: nic_link_layer: Add link layer selftest for NIC driver
  bnxt_en: Add FW trace coredump segments to the coredump
  bnxt_en: Add a new ethtool -W dump flag
  bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
  bnxt_en: Add functions to copy host context memory
  bnxt_en: Do not free FW log context memory
  bnxt_en: Manage the FW trace context memory
  bnxt_en: Allocate backing store memory for FW trace logs
  bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
  bnxt_en: Refactor bnxt_free_ctx_mem()
  bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
  bnxt_en: Update firmware interface spec to 1.10.3.85
  selftests/bpf: Add some tests with sockmap SK_PASS
  bpf: fix recursive lock when verdict program return SK_PASS
  wireguard: device: support big tcp GSO
  wireguard: selftests: load nf_conntrack if not present
  ...

1 files changed, 263 insertions, 0 deletions

diff --git a/include/net/netlink.h b/include/net/netlink.h
index db6af207287c8..39eaa6be6ca8d 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -142,6 +142,8 @@
  *   nla_get_flag(nla)			return 1 if flag is true
  *   nla_get_msecs(nla)			get payload for a msecs attribute
  *
+ *   The same functions also exist with _default().
+ *
  * Attribute Misc:
  *   nla_memcpy(dest, nla, count)	copy attribute into memory
  *   nla_memcmp(nla, data, size)	compare attribute with memory area
@@ -469,6 +471,7 @@ struct nla_policy {
 	.max = _len						\
 }
 #define NLA_POLICY_MIN_LEN(_len)	NLA_POLICY_MIN(NLA_BINARY, _len)
+#define NLA_POLICY_MAX_LEN(_len)	NLA_POLICY_MAX(NLA_BINARY, _len)
 
 /**
  * struct nl_info - netlink source information
@@ -1695,6 +1698,20 @@ static inline u32 nla_get_u32(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_u32_default - return payload of u32 attribute or default
+ * @nla: u32 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline u32 nla_get_u32_default(const struct nlattr *nla, u32 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_u32(nla);
+}
+
+/**
  * nla_get_be32 - return payload of __be32 attribute
  * @nla: __be32 netlink attribute
  */
@@ -1704,6 +1721,21 @@ static inline __be32 nla_get_be32(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_be32_default - return payload of be32 attribute or default
+ * @nla: __be32 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __be32 nla_get_be32_default(const struct nlattr *nla,
+					  __be32 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_be32(nla);
+}
+
+/**
  * nla_get_le32 - return payload of __le32 attribute
  * @nla: __le32 netlink attribute
  */
@@ -1713,6 +1745,21 @@ static inline __le32 nla_get_le32(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_le32_default - return payload of le32 attribute or default
+ * @nla: __le32 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __le32 nla_get_le32_default(const struct nlattr *nla,
+					  __le32 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_le32(nla);
+}
+
+/**
  * nla_get_u16 - return payload of u16 attribute
  * @nla: u16 netlink attribute
  */
@@ -1722,6 +1769,20 @@ static inline u16 nla_get_u16(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_u16_default - return payload of u16 attribute or default
+ * @nla: u16 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline u16 nla_get_u16_default(const struct nlattr *nla, u16 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_u16(nla);
+}
+
+/**
  * nla_get_be16 - return payload of __be16 attribute
  * @nla: __be16 netlink attribute
  */
@@ -1731,6 +1792,21 @@ static inline __be16 nla_get_be16(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_be16_default - return payload of be16 attribute or default
+ * @nla: __be16 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __be16 nla_get_be16_default(const struct nlattr *nla,
+					  __be16 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_be16(nla);
+}
+
+/**
  * nla_get_le16 - return payload of __le16 attribute
  * @nla: __le16 netlink attribute
  */
@@ -1740,6 +1816,21 @@ static inline __le16 nla_get_le16(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_le16_default - return payload of le16 attribute or default
+ * @nla: __le16 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __le16 nla_get_le16_default(const struct nlattr *nla,
+					  __le16 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_le16(nla);
+}
+
+/**
  * nla_get_u8 - return payload of u8 attribute
  * @nla: u8 netlink attribute
  */
@@ -1749,6 +1840,20 @@ static inline u8 nla_get_u8(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_u8_default - return payload of u8 attribute or default
+ * @nla: u8 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline u8 nla_get_u8_default(const struct nlattr *nla, u8 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_u8(nla);
+}
+
+/**
  * nla_get_u64 - return payload of u64 attribute
  * @nla: u64 netlink attribute
  */
@@ -1762,6 +1867,20 @@ static inline u64 nla_get_u64(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_u64_default - return payload of u64 attribute or default
+ * @nla: u64 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline u64 nla_get_u64_default(const struct nlattr *nla, u64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_u64(nla);
+}
+
+/**
  * nla_get_uint - return payload of uint attribute
  * @nla: uint netlink attribute
  */
@@ -1773,6 +1892,20 @@ static inline u64 nla_get_uint(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_uint_default - return payload of uint attribute or default
+ * @nla: uint netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline u64 nla_get_uint_default(const struct nlattr *nla, u64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_uint(nla);
+}
+
+/**
  * nla_get_be64 - return payload of __be64 attribute
  * @nla: __be64 netlink attribute
  */
@@ -1786,6 +1919,21 @@ static inline __be64 nla_get_be64(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_be64_default - return payload of be64 attribute or default
+ * @nla: __be64 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __be64 nla_get_be64_default(const struct nlattr *nla,
+					  __be64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_be64(nla);
+}
+
+/**
  * nla_get_le64 - return payload of __le64 attribute
  * @nla: __le64 netlink attribute
  */
@@ -1795,6 +1943,21 @@ static inline __le64 nla_get_le64(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_le64_default - return payload of le64 attribute or default
+ * @nla: __le64 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __le64 nla_get_le64_default(const struct nlattr *nla,
+					  __le64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_le64(nla);
+}
+
+/**
  * nla_get_s32 - return payload of s32 attribute
  * @nla: s32 netlink attribute
  */
@@ -1804,6 +1967,20 @@ static inline s32 nla_get_s32(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_s32_default - return payload of s32 attribute or default
+ * @nla: s32 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline s32 nla_get_s32_default(const struct nlattr *nla, s32 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_s32(nla);
+}
+
+/**
  * nla_get_s16 - return payload of s16 attribute
  * @nla: s16 netlink attribute
  */
@@ -1813,6 +1990,20 @@ static inline s16 nla_get_s16(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_s16_default - return payload of s16 attribute or default
+ * @nla: s16 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline s16 nla_get_s16_default(const struct nlattr *nla, s16 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_s16(nla);
+}
+
+/**
  * nla_get_s8 - return payload of s8 attribute
  * @nla: s8 netlink attribute
  */
@@ -1822,6 +2013,20 @@ static inline s8 nla_get_s8(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_s8_default - return payload of s8 attribute or default
+ * @nla: s8 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline s8 nla_get_s8_default(const struct nlattr *nla, s8 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_s8(nla);
+}
+
+/**
  * nla_get_s64 - return payload of s64 attribute
  * @nla: s64 netlink attribute
  */
@@ -1835,6 +2040,20 @@ static inline s64 nla_get_s64(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_s64_default - return payload of s64 attribute or default
+ * @nla: s64 netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline s64 nla_get_s64_default(const struct nlattr *nla, s64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_s64(nla);
+}
+
+/**
  * nla_get_sint - return payload of uint attribute
  * @nla: uint netlink attribute
  */
@@ -1846,6 +2065,20 @@ static inline s64 nla_get_sint(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_sint_default - return payload of sint attribute or default
+ * @nla: sint netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline s64 nla_get_sint_default(const struct nlattr *nla, s64 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_sint(nla);
+}
+
+/**
  * nla_get_flag - return payload of flag attribute
  * @nla: flag netlink attribute
  */
@@ -1868,6 +2101,21 @@ static inline unsigned long nla_get_msecs(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_msecs_default - return payload of msecs attribute or default
+ * @nla: msecs netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline unsigned long nla_get_msecs_default(const struct nlattr *nla,
+						  unsigned long defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_msecs(nla);
+}
+
+/**
  * nla_get_in_addr - return payload of IPv4 address attribute
  * @nla: IPv4 address netlink attribute
  */
@@ -1877,6 +2125,21 @@ static inline __be32 nla_get_in_addr(const struct nlattr *nla)
 }
 
 /**
+ * nla_get_in_addr_default - return payload of be32 attribute or default
+ * @nla: IPv4 address netlink attribute, may be %NULL
+ * @defvalue: default value to use if @nla is %NULL
+ *
+ * Return: the value of the attribute, or the default value if not present
+ */
+static inline __be32 nla_get_in_addr_default(const struct nlattr *nla,
+					     __be32 defvalue)
+{
+	if (!nla)
+		return defvalue;
+	return nla_get_in_addr(nla);
+}
+
+/**
  * nla_get_in6_addr - return payload of IPv6 address attribute
  * @nla: IPv6 address netlink attribute
  */