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, 286 insertions, 0 deletions

diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
new file mode 100644
index 000000000..f09505f8b
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include <network_helpers.h>
+
+static void test_xdp_adjust_tail_shrink(void)
+{
+	const char *file = "./test_xdp_adjust_tail_shrink.bpf.o";
+	__u32 expect_sz;
+	struct bpf_object *obj;
+	int err, prog_fd;
+	char buf[128];
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,
+		.data_size_in = sizeof(pkt_v4),
+		.data_out = buf,
+		.data_size_out = sizeof(buf),
+		.repeat = 1,
+	);
+
+	err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
+	if (!ASSERT_OK(err, "test_xdp_adjust_tail_shrink"))
+		return;
+
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	ASSERT_OK(err, "ipv4");
+	ASSERT_EQ(topts.retval, XDP_DROP, "ipv4 retval");
+
+	expect_sz = sizeof(pkt_v6) - 20;  /* Test shrink with 20 bytes */
+	topts.data_in = &pkt_v6;
+	topts.data_size_in = sizeof(pkt_v6);
+	topts.data_size_out = sizeof(buf);
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	ASSERT_OK(err, "ipv6");
+	ASSERT_EQ(topts.retval, XDP_TX, "ipv6 retval");
+	ASSERT_EQ(topts.data_size_out, expect_sz, "ipv6 size");
+
+	bpf_object__close(obj);
+}
+
+static void test_xdp_adjust_tail_grow(void)
+{
+	const char *file = "./test_xdp_adjust_tail_grow.bpf.o";
+	struct bpf_object *obj;
+	char buf[4096]; /* avoid segfault: large buf to hold grow results */
+	__u32 expect_sz;
+	int err, prog_fd;
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,
+		.data_size_in = sizeof(pkt_v4),
+		.data_out = buf,
+		.data_size_out = sizeof(buf),
+		.repeat = 1,
+	);
+
+	err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
+	if (!ASSERT_OK(err, "test_xdp_adjust_tail_grow"))
+		return;
+
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	ASSERT_OK(err, "ipv4");
+	ASSERT_EQ(topts.retval, XDP_DROP, "ipv4 retval");
+
+	expect_sz = sizeof(pkt_v6) + 40; /* Test grow with 40 bytes */
+	topts.data_in = &pkt_v6;
+	topts.data_size_in = sizeof(pkt_v6);
+	topts.data_size_out = sizeof(buf);
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+	ASSERT_OK(err, "ipv6");
+	ASSERT_EQ(topts.retval, XDP_TX, "ipv6 retval");
+	ASSERT_EQ(topts.data_size_out, expect_sz, "ipv6 size");
+
+	bpf_object__close(obj);
+}
+
+static void test_xdp_adjust_tail_grow2(void)
+{
+	const char *file = "./test_xdp_adjust_tail_grow.bpf.o";
+	char buf[4096]; /* avoid segfault: large buf to hold grow results */
+	struct bpf_object *obj;
+	int err, cnt, i;
+	int max_grow, prog_fd;
+	/* SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) */
+#if defined(__s390x__)
+	int tailroom = 512;
+#else
+	int tailroom = 320;
+#endif
+
+	LIBBPF_OPTS(bpf_test_run_opts, tattr,
+		.repeat		= 1,
+		.data_in	= &buf,
+		.data_out	= &buf,
+		.data_size_in	= 0, /* Per test */
+		.data_size_out	= 0, /* Per test */
+	);
+
+	err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
+	if (!ASSERT_OK(err, "test_xdp_adjust_tail_grow"))
+		return;
+
+	/* Test case-64 */
+	memset(buf, 1, sizeof(buf));
+	tattr.data_size_in  =  64; /* Determine test case via pkt size */
+	tattr.data_size_out = 128; /* Limit copy_size */
+	/* Kernel side alloc packet memory area that is zero init */
+	err = bpf_prog_test_run_opts(prog_fd, &tattr);
+
+	ASSERT_EQ(errno, ENOSPC, "case-64 errno"); /* Due limit copy_size in bpf_test_finish */
+	ASSERT_EQ(tattr.retval, XDP_TX, "case-64 retval");
+	ASSERT_EQ(tattr.data_size_out, 192, "case-64 data_size_out"); /* Expected grow size */
+
+	/* Extra checks for data contents */
+	ASSERT_EQ(buf[0], 1, "case-64-data buf[0]"); /*  0-63  memset to 1 */
+	ASSERT_EQ(buf[63], 1, "case-64-data buf[63]");
+	ASSERT_EQ(buf[64], 0, "case-64-data buf[64]"); /* 64-127 memset to 0 */
+	ASSERT_EQ(buf[127], 0, "case-64-data buf[127]");
+	ASSERT_EQ(buf[128], 1, "case-64-data buf[128]"); /* 128-191 memset to 1 */
+	ASSERT_EQ(buf[191], 1, "case-64-data buf[191]");
+
+	/* Test case-128 */
+	memset(buf, 2, sizeof(buf));
+	tattr.data_size_in  = 128; /* Determine test case via pkt size */
+	tattr.data_size_out = sizeof(buf);   /* Copy everything */
+	err = bpf_prog_test_run_opts(prog_fd, &tattr);
+
+	max_grow = 4096 - XDP_PACKET_HEADROOM -	tailroom; /* 3520 */
+	ASSERT_OK(err, "case-128");
+	ASSERT_EQ(tattr.retval, XDP_TX, "case-128 retval");
+	ASSERT_EQ(tattr.data_size_out, max_grow, "case-128 data_size_out"); /* Expect max grow */
+
+	/* Extra checks for data content: Count grow size, will contain zeros */
+	for (i = 0, cnt = 0; i < sizeof(buf); i++) {
+		if (buf[i] == 0)
+			cnt++;
+	}
+	ASSERT_EQ(cnt, max_grow - tattr.data_size_in, "case-128-data cnt"); /* Grow increase */
+	ASSERT_EQ(tattr.data_size_out, max_grow, "case-128-data data_size_out"); /* Total grow */
+
+	bpf_object__close(obj);
+}
+
+static void test_xdp_adjust_frags_tail_shrink(void)
+{
+	const char *file = "./test_xdp_adjust_tail_shrink.bpf.o";
+	__u32 exp_size;
+	struct bpf_program *prog;
+	struct bpf_object *obj;
+	int err, prog_fd;
+	__u8 *buf;
+	LIBBPF_OPTS(bpf_test_run_opts, topts);
+
+	/* For the individual test cases, the first byte in the packet
+	 * indicates which test will be run.
+	 */
+	obj = bpf_object__open(file);
+	if (libbpf_get_error(obj))
+		return;
+
+	prog = bpf_object__next_program(obj, NULL);
+	if (bpf_object__load(obj))
+		return;
+
+	prog_fd = bpf_program__fd(prog);
+
+	buf = malloc(9000);
+	if (!ASSERT_OK_PTR(buf, "alloc buf 9Kb"))
+		goto out;
+
+	memset(buf, 0, 9000);
+
+	/* Test case removing 10 bytes from last frag, NOT freeing it */
+	exp_size = 8990; /* 9000 - 10 */
+	topts.data_in = buf;
+	topts.data_out = buf;
+	topts.data_size_in = 9000;
+	topts.data_size_out = 9000;
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+
+	ASSERT_OK(err, "9Kb-10b");
+	ASSERT_EQ(topts.retval, XDP_TX, "9Kb-10b retval");
+	ASSERT_EQ(topts.data_size_out, exp_size, "9Kb-10b size");
+
+	/* Test case removing one of two pages, assuming 4K pages */
+	buf[0] = 1;
+	exp_size = 4900; /* 9000 - 4100 */
+
+	topts.data_size_out = 9000; /* reset from previous invocation */
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+
+	ASSERT_OK(err, "9Kb-4Kb");
+	ASSERT_EQ(topts.retval, XDP_TX, "9Kb-4Kb retval");
+	ASSERT_EQ(topts.data_size_out, exp_size, "9Kb-4Kb size");
+
+	/* Test case removing two pages resulting in a linear xdp_buff */
+	buf[0] = 2;
+	exp_size = 800; /* 9000 - 8200 */
+	topts.data_size_out = 9000; /* reset from previous invocation */
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+
+	ASSERT_OK(err, "9Kb-9Kb");
+	ASSERT_EQ(topts.retval, XDP_TX, "9Kb-9Kb retval");
+	ASSERT_EQ(topts.data_size_out, exp_size, "9Kb-9Kb size");
+
+	free(buf);
+out:
+	bpf_object__close(obj);
+}
+
+static void test_xdp_adjust_frags_tail_grow(void)
+{
+	const char *file = "./test_xdp_adjust_tail_grow.bpf.o";
+	__u32 exp_size;
+	struct bpf_program *prog;
+	struct bpf_object *obj;
+	int err, i, prog_fd;
+	__u8 *buf;
+	LIBBPF_OPTS(bpf_test_run_opts, topts);
+
+	obj = bpf_object__open(file);
+	if (libbpf_get_error(obj))
+		return;
+
+	prog = bpf_object__next_program(obj, NULL);
+	if (bpf_object__load(obj))
+		return;
+
+	prog_fd = bpf_program__fd(prog);
+
+	buf = malloc(16384);
+	if (!ASSERT_OK_PTR(buf, "alloc buf 16Kb"))
+		goto out;
+
+	/* Test case add 10 bytes to last frag */
+	memset(buf, 1, 16384);
+	exp_size = 9000 + 10;
+
+	topts.data_in = buf;
+	topts.data_out = buf;
+	topts.data_size_in = 9000;
+	topts.data_size_out = 16384;
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+
+	ASSERT_OK(err, "9Kb+10b");
+	ASSERT_EQ(topts.retval, XDP_TX, "9Kb+10b retval");
+	ASSERT_EQ(topts.data_size_out, exp_size, "9Kb+10b size");
+
+	for (i = 0; i < 9000; i++)
+		ASSERT_EQ(buf[i], 1, "9Kb+10b-old");
+
+	for (i = 9000; i < 9010; i++)
+		ASSERT_EQ(buf[i], 0, "9Kb+10b-new");
+
+	for (i = 9010; i < 16384; i++)
+		ASSERT_EQ(buf[i], 1, "9Kb+10b-untouched");
+
+	/* Test a too large grow */
+	memset(buf, 1, 16384);
+	exp_size = 9001;
+
+	topts.data_in = topts.data_out = buf;
+	topts.data_size_in = 9001;
+	topts.data_size_out = 16384;
+	err = bpf_prog_test_run_opts(prog_fd, &topts);
+
+	ASSERT_OK(err, "9Kb+10b");
+	ASSERT_EQ(topts.retval, XDP_DROP, "9Kb+10b retval");
+	ASSERT_EQ(topts.data_size_out, exp_size, "9Kb+10b size");
+
+	free(buf);
+out:
+	bpf_object__close(obj);
+}
+
+void test_xdp_adjust_tail(void)
+{
+	if (test__start_subtest("xdp_adjust_tail_shrink"))
+		test_xdp_adjust_tail_shrink();
+	if (test__start_subtest("xdp_adjust_tail_grow"))
+		test_xdp_adjust_tail_grow();
+	if (test__start_subtest("xdp_adjust_tail_grow2"))
+		test_xdp_adjust_tail_grow2();
+	if (test__start_subtest("xdp_adjust_frags_tail_shrink"))
+		test_xdp_adjust_frags_tail_shrink();
+	if (test__start_subtest("xdp_adjust_frags_tail_grow"))
+		test_xdp_adjust_frags_tail_grow();
+}