Merge tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - Improve drop account scalability on NUMA hosts for RAW and UDP
     sockets and the backlog, almost doubling the Pps capacity under DoS

   - Optimize the UDP RX performance under stress, reducing contention,
     revisiting the binary layout of the involved data structs and
     implementing NUMA-aware locking. This improves UDP RX performance
     by an additional 50%, even more under extreme conditions

   - Add support for PSP encryption of TCP connections; this mechanism
     has some similarities with IPsec and TLS, but offers superior HW
     offloads capabilities

   - Ongoing work to support Accurate ECN for TCP. AccECN allows more
     than one congestion notification signal per RTT and is a building
     block for Low Latency, Low Loss, and Scalable Throughput (L4S)

   - Reorganize the TCP socket binary layout for data locality, reducing
     the number of touched cachelines in the fastpath

   - Refactor skb deferral free to better scale on large multi-NUMA
     hosts, this improves TCP and UDP RX performances significantly on
     such HW

   - Increase the default socket memory buffer limits from 256K to 4M to
     better fit modern link speeds

   - Improve handling of setups with a large number of nexthop, making
     dump operating scaling linearly and avoiding unneeded
     synchronize_rcu() on delete

   - Improve bridge handling of VLAN FDB, storing a single entry per
     bridge instead of one entry per port; this makes the dump order of
     magnitude faster on large switches

   - Restore IP ID correctly for encapsulated packets at GSO
     segmentation time, allowing GRO to merge packets in more scenarios

   - Improve netfilter matching performance on large sets

   - Improve MPTCP receive path performance by leveraging recently
     introduced core infrastructure (skb deferral free) and adopting
     recent TCP autotuning changes

   - Allow bridges to redirect to a backup port when the bridge port is
     administratively down

   - Introduce MPTCP 'laminar' endpoint that con be used only once per
     connection and simplify common MPTCP setups

   - Add RCU safety to dst->dev, closing a lot of possible races

   - A significant crypto library API for SCTP, MPTCP and IPv6 SR,
     reducing code duplication

   - Supports pulling data from an skb frag into the linear area of an
     XDP buffer

  Things we sprinkled into general kernel code:

   - Generate netlink documentation from YAML using an integrated YAML
     parser

  Driver API:

   - Support using IPv6 Flow Label in Rx hash computation and RSS queue
     selection

   - Introduce API for fetching the DMA device for a given queue,
     allowing TCP zerocopy RX on more H/W setups

   - Make XDP helpers compatible with unreadable memory, allowing more
     easily building DevMem-enabled drivers with a unified XDP/skbs
     datapath

   - Add a new dedicated ethtool callback enabling drivers to provide
     the number of RX rings directly, improving efficiency and clarity
     in RX ring queries and RSS configuration

   - Introduce a burst period for the health reporter, allowing better
     handling of multiple errors due to the same root cause

   - Support for DPLL phase offset exponential moving average,
     controlling the average smoothing factor

  Device drivers:

   - Add a new Huawei driver for 3rd gen NIC (hinic3)

   - Add a new SpacemiT driver for K1 ethernet MAC

   - Add a generic abstraction for shared memory communication
     devices (dibps)

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - Use multiple per-queue doorbell, to avoid MMIO contention
           issues
         - support adjacent functions, allowing them to delegate their
           SR-IOV VFs to sibling PFs
         - support RSS for IPSec offload
         - support exposing raw cycle counters in PTP and mlx5
         - support for disabling host PFs.
      - Intel (100G, ice, idpf):
         - ice: support for SRIOV VFs over an Active-Active link
           aggregate
         - ice: support for firmware logging via debugfs
         - ice: support for Earliest TxTime First (ETF) hardware offload
         - idpf: support basic XDP functionalities and XSk
      - Broadcom (bnxt):
         - support Hyper-V VF ID
         - dynamic SRIOV resource allocations for RoCE
      - Meta (fbnic):
         - support queue API, zero-copy Rx and Tx
         - support basic XDP functionalities
         - devlink health support for FW crashes and OTP mem corruptions
         - expand hardware stats coverage to FEC, PHY, and Pause
      - Wangxun:
         - support ethtool coalesce options
         - support for multiple RSS contexts

   - Ethernet virtual:
      - Macsec:
         - replace custom netlink attribute checks with policy-level
           checks
      - Bonding:
         - support aggregator selection based on port priority
      - Microsoft vNIC:
         - use page pool fragments for RX buffers instead of full pages
           to improve memory efficiency

   - Ethernet NICs consumer, and embedded:
      - Qualcomm: support Ethernet function for IPQ9574 SoC
      - Airoha: implement wlan offloading via NPU
      - Freescale
         - enetc: add NETC timer PTP driver and add PTP support
         - fec: enable the Jumbo frame support for i.MX8QM
      - Renesas (R-Car S4):
         - support HW offloading for layer 2 switching
         - support for RZ/{T2H, N2H} SoCs
      - Cadence (macb): support TAPRIO traffic scheduling
      - TI:
         - support for Gigabit ICSS ethernet SoC (icssm-prueth)
      - Synopsys (stmmac): a lot of cleanups

   - Ethernet PHYs:
      - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
        driver
      - Support bcm63268 GPHY power control
      - Support for Micrel lan8842 PHY and PTP
      - Support for Aquantia AQR412 and AQR115

   - CAN:
      - a large CAN-XL preparation work
      - reorganize raw_sock and uniqframe struct to minimize memory
        usage
      - rcar_canfd: update the CAN-FD handling

   - WiFi:
      - extended Neighbor Awareness Networking (NAN) support
      - S1G channel representation cleanup
      - improve S1G support

   - WiFi drivers:
      - Intel (iwlwifi):
         - major refactor and cleanup
      - Broadcom (brcm80211):
         - support for AP isolation
      - RealTek (rtw88/89) rtw88/89:
         - preparation work for RTL8922DE support
      - MediaTek (mt76):
         - HW restart improvements
         - MLO support
      - Qualcomm/Atheros (ath10k):
         - GTK rekey fixes

   - Bluetooth drivers:
      - btusb: support for several new IDs for MT7925
      - btintel: support for BlazarIW core
      - btintel_pcie: support for _suspend() / _resume()
      - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs"

* tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits)
  net: stmmac: Add support for Allwinner A523 GMAC200
  dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible
  Revert "Documentation: net: add flow control guide and document ethtool API"
  octeontx2-pf: fix bitmap leak
  octeontx2-vf: fix bitmap leak
  net/mlx5e: Use extack in set rxfh callback
  net/mlx5e: Introduce mlx5e_rss_params for RSS configuration
  net/mlx5e: Introduce mlx5e_rss_init_params
  net/mlx5e: Remove unused mdev param from RSS indir init
  net/mlx5: Improve QoS error messages with actual depth values
  net/mlx5e: Prevent entering switchdev mode with inconsistent netns
  net/mlx5: HWS, Generalize complex matchers
  net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
  selftests/net: add tcp_port_share to .gitignore
  Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"
  net: add NUMA awareness to skb_attempt_defer_free()
  net: use llist for sd->defer_list
  net: make softnet_data.defer_count an atomic
  selftests: drv-net: psp: add tests for destroying devices
  selftests: drv-net: psp: add test for auto-adjusting TCP MSS
  ...

1 files changed, 356 insertions, 0 deletions

diff --git a/net/mac80211/tests/s1g_tim.c b/net/mac80211/tests/s1g_tim.c
new file mode 100644
index 000000000000..642fa4ece89f
--- /dev/null
+++ b/net/mac80211/tests/s1g_tim.c
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * KUnit tests for S1G TIM PVB decoding. This test suite covers
+ * IEEE80211-2024 Annex L figures 8, 9, 10, 12, 13, 14. ADE mode
+ * is not covered as it is an optional encoding format and is not
+ * currently supported by mac80211.
+ *
+ * Copyright (C) 2025 Morse Micro
+ */
+#include <linux/ieee80211.h>
+#include <kunit/test.h>
+#include <kunit/test-bug.h>
+
+#define MAX_AID 128
+
+#define BC(enc_mode, inverse, blk_off)                          \
+	((((blk_off) & 0x1f) << 3) | ((inverse) ? BIT(2) : 0) | \
+	 ((enc_mode) & 0x3))
+
+static void byte_to_bitstr(u8 v, char *out)
+{
+	for (int b = 7; b >= 0; b--)
+		*out++ = (v & BIT(b)) ? '1' : '0';
+	*out = '\0';
+}
+
+static void dump_tim_bits(struct kunit *test,
+			  const struct ieee80211_tim_ie *tim, u8 tim_len)
+{
+	const u8 *ptr = tim->virtual_map;
+	const u8 *end = (const u8 *)tim + tim_len;
+	unsigned int oct = 1;
+	unsigned int blk = 0;
+	char bits[9];
+
+	while (ptr < end) {
+		u8 ctrl = *ptr++;
+		u8 mode = ctrl & 0x03;
+		bool inverse = ctrl & BIT(2);
+		u8 blk_off = ctrl >> 3;
+
+		kunit_info(
+			test, "Block %u (ENC=%s, blk_off=%u, inverse=%u)", blk,
+			(mode == IEEE80211_S1G_TIM_ENC_MODE_BLOCK)  ? "BLOCK" :
+			(mode == IEEE80211_S1G_TIM_ENC_MODE_SINGLE) ? "SINGLE" :
+								      "OLB",
+			blk_off, inverse);
+
+		byte_to_bitstr(ctrl, bits);
+		kunit_info(test, "  octet %2u (ctrl)    : %s (0x%02x)", oct,
+			   bits, ctrl);
+		++oct;
+
+		switch (mode) {
+		case IEEE80211_S1G_TIM_ENC_MODE_BLOCK: {
+			u8 blkmap = *ptr++;
+
+			byte_to_bitstr(blkmap, bits);
+			kunit_info(test, "  octet %2u (blk-map) : %s (0x%02x)",
+				   oct, bits, blkmap);
+			++oct;
+
+			for (u8 sb = 0; sb < 8; sb++) {
+				if (!(blkmap & BIT(sb)))
+					continue;
+				u8 sub = *ptr++;
+
+				byte_to_bitstr(sub, bits);
+				kunit_info(
+					test,
+					"  octet %2u (SB %2u)   : %s (0x%02x)",
+					oct, sb, bits, sub);
+				++oct;
+			}
+			break;
+		}
+		case IEEE80211_S1G_TIM_ENC_MODE_SINGLE: {
+			u8 single = *ptr++;
+
+			byte_to_bitstr(single, bits);
+			kunit_info(test, "  octet %2u (single)  : %s (0x%02x)",
+				   oct, bits, single);
+			++oct;
+			break;
+		}
+		case IEEE80211_S1G_TIM_ENC_MODE_OLB: {
+			u8 len = *ptr++;
+
+			byte_to_bitstr(len, bits);
+			kunit_info(test, "  octet %2u (len=%2u)  : %s (0x%02x)",
+				   oct, len, bits, len);
+			++oct;
+
+			for (u8 i = 0; i < len && ptr < end; i++) {
+				u8 sub = *ptr++;
+
+				byte_to_bitstr(sub, bits);
+				kunit_info(
+					test,
+					"  octet %2u (SB %2u)   : %s (0x%02x)",
+					oct, i, bits, sub);
+				++oct;
+			}
+			break;
+		}
+		default:
+			kunit_info(test, "  ** unknown encoding 0x%x **", mode);
+			return;
+		}
+		blk++;
+	}
+}
+
+static void tim_push(u8 **p, u8 v)
+{
+	*(*p)++ = v;
+}
+
+static void tim_begin(struct ieee80211_tim_ie *tim, u8 **p)
+{
+	tim->dtim_count = 0;
+	tim->dtim_period = 1;
+	tim->bitmap_ctrl = 0;
+	*p = tim->virtual_map;
+}
+
+static u8 tim_end(struct ieee80211_tim_ie *tim, u8 *tail)
+{
+	return tail - (u8 *)tim;
+}
+
+static void pvb_add_block_bitmap(u8 **p, u8 blk_off, bool inverse, u8 blk_bmap,
+				 const u8 *subblocks)
+{
+	u8 enc = IEEE80211_S1G_TIM_ENC_MODE_BLOCK;
+	u8 n = hweight8(blk_bmap);
+
+	tim_push(p, BC(enc, inverse, blk_off));
+	tim_push(p, blk_bmap);
+
+	for (u8 i = 0; i < n; i++)
+		tim_push(p, subblocks[i]);
+}
+
+static void pvb_add_single_aid(u8 **p, u8 blk_off, bool inverse, u8 single6)
+{
+	u8 enc = IEEE80211_S1G_TIM_ENC_MODE_SINGLE;
+
+	tim_push(p, BC(enc, inverse, blk_off));
+	tim_push(p, single6 & GENMASK(5, 0));
+}
+
+static void pvb_add_olb(u8 **p, u8 blk_off, bool inverse, const u8 *subblocks,
+			u8 len)
+{
+	u8 enc = IEEE80211_S1G_TIM_ENC_MODE_OLB;
+
+	tim_push(p, BC(enc, inverse, blk_off));
+	tim_push(p, len);
+	for (u8 i = 0; i < len; i++)
+		tim_push(p, subblocks[i]);
+}
+
+static void check_all_aids(struct kunit *test,
+			   const struct ieee80211_tim_ie *tim, u8 tim_len,
+			   const unsigned long *expected)
+{
+	for (u16 aid = 1; aid <= MAX_AID; aid++) {
+		bool want = test_bit(aid, expected);
+		bool got = ieee80211_s1g_check_tim(tim, tim_len, aid);
+
+		KUNIT_ASSERT_EQ_MSG(test, got, want,
+				    "AID %u mismatch (got=%d want=%d)", aid,
+				    got, want);
+	}
+}
+
+static void fill_bitmap(unsigned long *bm, const u16 *list, size_t n)
+{
+	size_t i;
+
+	bitmap_zero(bm, MAX_AID + 1);
+	for (i = 0; i < n; i++)
+		__set_bit(list[i], bm);
+}
+
+static void fill_bitmap_inverse(unsigned long *bm, u16 max_aid,
+				const u16 *except, size_t n_except)
+{
+	bitmap_zero(bm, MAX_AID + 1);
+	for (u16 aid = 1; aid <= max_aid; aid++)
+		__set_bit(aid, bm);
+
+	for (size_t i = 0; i < n_except; i++)
+		if (except[i] <= max_aid)
+			__clear_bit(except[i], bm);
+}
+
+static void s1g_tim_block_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	static const u8 subblocks[] = {
+		0x42, /* SB m=0: AIDs 1,6 */
+		0xA0, /* SB m=2: AIDs 21,23 */
+	};
+	u8 blk_bmap = 0x05; /* bits 0 and 2 set */
+	bool inverse = false;
+	static const u16 set_list[] = { 1, 6, 21, 23 };
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_block_bitmap(&p, 0, inverse, blk_bmap, subblocks);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap(exp, set_list, ARRAY_SIZE(set_list));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static void s1g_tim_single_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	bool inverse = false;
+	u8 blk_off = 0;
+	u8 single6 = 0x1f; /* 31 */
+	static const u16 set_list[] = { 31 };
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_single_aid(&p, blk_off, inverse, single6);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap(exp, set_list, ARRAY_SIZE(set_list));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static void s1g_tim_olb_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	bool inverse = false;
+	u8 blk_off = 0;
+	static const u16 set_list[] = { 1,  6,	13, 15, 17, 22, 29, 31, 33,
+					38, 45, 47, 49, 54, 61, 63, 65, 70 };
+	static const u8 subblocks[] = { 0x42, 0xA0, 0x42, 0xA0, 0x42,
+					0xA0, 0x42, 0xA0, 0x42 };
+	u8 len = ARRAY_SIZE(subblocks);
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_olb(&p, blk_off, inverse, subblocks, len);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap(exp, set_list, ARRAY_SIZE(set_list));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static void s1g_tim_inverse_block_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	/* Same sub-block content as Figure L-8, but inverse = true */
+	static const u8 subblocks[] = {
+		0x42, /* SB m=0: AIDs 1,6 */
+		0xA0, /* SB m=2: AIDs 21,23 */
+	};
+	u8 blk_bmap = 0x05;
+	bool inverse = true;
+	/*  All AIDs except 1,6,21,23 are set */
+	static const u16 except[] = { 1, 6, 21, 23 };
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_block_bitmap(&p, 0, inverse, blk_bmap, subblocks);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap_inverse(exp, 63, except, ARRAY_SIZE(except));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static void s1g_tim_inverse_single_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	bool inverse = true;
+	u8 blk_off = 0;
+	u8 single6 = 0x1f; /* 31 */
+	/*  All AIDs except 31 are set */
+	static const u16 except[] = { 31 };
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_single_aid(&p, blk_off, inverse, single6);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap_inverse(exp, 63, except, ARRAY_SIZE(except));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static void s1g_tim_inverse_olb_test(struct kunit *test)
+{
+	u8 buf[256] = {};
+	struct ieee80211_tim_ie *tim = (void *)buf;
+	u8 *p, tim_len;
+	bool inverse = true;
+	u8 blk_off = 0, len;
+	/*  All AIDs except the list below are set */
+	static const u16 except[] = { 1,  6,  13, 15, 17, 22, 29, 31, 33,
+				      38, 45, 47, 49, 54, 61, 63, 65, 70 };
+	static const u8 subblocks[] = { 0x42, 0xA0, 0x42, 0xA0, 0x42,
+					0xA0, 0x42, 0xA0, 0x42 };
+	len = ARRAY_SIZE(subblocks);
+	DECLARE_BITMAP(exp, MAX_AID + 1);
+
+	tim_begin(tim, &p);
+	pvb_add_olb(&p, blk_off, inverse, subblocks, len);
+	tim_len = tim_end(tim, p);
+
+	fill_bitmap_inverse(exp, 127, except, ARRAY_SIZE(except));
+
+	dump_tim_bits(test, tim, tim_len);
+	check_all_aids(test, tim, tim_len, exp);
+}
+
+static struct kunit_case s1g_tim_test_cases[] = {
+	KUNIT_CASE(s1g_tim_block_test),
+	KUNIT_CASE(s1g_tim_single_test),
+	KUNIT_CASE(s1g_tim_olb_test),
+	KUNIT_CASE(s1g_tim_inverse_block_test),
+	KUNIT_CASE(s1g_tim_inverse_single_test),
+	KUNIT_CASE(s1g_tim_inverse_olb_test),
+	{}
+};
+
+static struct kunit_suite s1g_tim = {
+	.name = "mac80211-s1g-tim",
+	.test_cases = s1g_tim_test_cases,
+};
+
+kunit_test_suite(s1g_tim);