Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 386 insertions, 0 deletions

diff --git a/net/mac80211/tests/elems.c b/net/mac80211/tests/elems.c
new file mode 100644
index 000000000..4b13a5aad
--- /dev/null
+++ b/net/mac80211/tests/elems.c
@@ -0,0 +1,386 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * KUnit tests for element parsing
+ *
+ * Copyright (C) 2023-2025 Intel Corporation
+ */
+#include <kunit/test.h>
+#include "../ieee80211_i.h"
+
+MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
+
+static const struct mesh_preq_parse_test_case {
+	const char *desc;
+	u8 len;
+	bool ae_enabled;
+	u8 target_count;
+	bool result;
+} mesh_preq_parse_cases[] = {
+	{
+		.desc = "shorter than header",
+		.len = 16,
+		.ae_enabled = false,
+		.target_count = 1,
+		.result = false,
+	},
+	{
+		.desc = "too short non AE, target count is not included",
+		.len = 29,
+		.ae_enabled = false,
+		.target_count = 1,
+		.result = false,
+	},
+	{
+		.desc = "too short non AE, target count is 1",
+		.len = 36,
+		.ae_enabled = false,
+		.target_count = 1,
+		.result = false,
+	},
+	{
+		.desc = "too short AE, target count is not included",
+		.len = 35,
+		.ae_enabled = true,
+		.target_count = 1,
+		.result = false,
+	},
+	{
+		.desc = "too short AE, target count is 1",
+		.len = 42,
+		.ae_enabled = true,
+		.target_count = 1,
+		.result = false,
+	},
+	{
+		.desc = "target count is zero",
+		.len = 26,
+		.ae_enabled = false,
+		.target_count = 0,
+		.result = false,
+	},
+	{
+		.desc = "target count is 21",
+		.len = 255,
+		.ae_enabled = false,
+		.target_count = 21,
+		.result = false,
+	},
+	{
+		.desc = "non AE, target count is 1",
+		.len = 37,
+		.ae_enabled = false,
+		.target_count = 1,
+		.result = true,
+	},
+	{
+		.desc = "non AE, target count is 20",
+		.len = 246,
+		.ae_enabled = false,
+		.target_count = 20,
+		.result = true,
+	},
+	{
+		.desc = "AE, target count is 1",
+		.len = 43,
+		.ae_enabled = true,
+		.target_count = 1,
+		.result = true,
+	},
+	{
+		.desc = "AE, target count is 20",
+		.len = 252,
+		.ae_enabled = true,
+		.target_count = 20,
+		.result = true,
+	},
+};
+
+KUNIT_ARRAY_PARAM_DESC(mesh_preq_parse, mesh_preq_parse_cases, desc);
+
+static const struct mesh_prep_parse_test_case {
+	const char *desc;
+	u8 len;
+	bool ae_enabled;
+	bool result;
+} mesh_prep_parse_cases[] = {
+	{
+		.desc = "shorter than header",
+		.len = 12,
+		.ae_enabled = false,
+		.result = false,
+	},
+	{
+		.desc = "non AE short",
+		.len = 30,
+		.ae_enabled = false,
+		.result = false,
+	},
+	{
+		.desc = "non AE",
+		.len = 31,
+		.ae_enabled = false,
+		.result = true,
+	},
+	{
+		.desc = "AE short",
+		.len = 36,
+		.ae_enabled = true,
+		.result = false,
+	},
+	{
+		.desc = "AE",
+		.len = 37,
+		.ae_enabled = true,
+		.result = true,
+	},
+};
+
+KUNIT_ARRAY_PARAM_DESC(mesh_prep_parse, mesh_prep_parse_cases, desc);
+
+static const struct mesh_perr_parse_test_case {
+	const char *desc;
+	u8 len;
+	u8 number_of_dst;
+	int ae_enabled_idx;
+	bool result;
+} mesh_perr_parse_cases[] = {
+	{
+		.desc = "shorter than header",
+		.len = 1,
+		.number_of_dst = 1,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 0",
+		.len = 2,
+		.number_of_dst = 0,
+		.ae_enabled_idx = -1,
+		.result = true,
+	},
+	{
+		.desc = "number_of_dst is 20",
+		.len = 255,
+		.number_of_dst = 20,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 1, non AE, short",
+		.len = 14,
+		.number_of_dst = 1,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 1, non AE",
+		.len = 15,
+		.number_of_dst = 1,
+		.ae_enabled_idx = -1,
+		.result = true,
+	},
+	{
+		.desc = "number_of_dst is 1, non AE, extra short dst header",
+		.len = 25,
+		.number_of_dst = 1,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 1, non AE, extra dst header",
+		.len = 26,
+		.number_of_dst = 1,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 1, AE, short",
+		.len = 20,
+		.number_of_dst = 1,
+		.ae_enabled_idx = 0,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 1, AE",
+		.len = 21,
+		.number_of_dst = 1,
+		.ae_enabled_idx = 0,
+		.result = true,
+	},
+	{
+		.desc = "number_of_dst is 19, non AE, short",
+		.len = 2 + 13 * 19 - 1,
+		.number_of_dst = 19,
+		.ae_enabled_idx = -1,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 19, non AE",
+		.len = 2 + 13 * 19,
+		.number_of_dst = 19,
+		.ae_enabled_idx = -1,
+		.result = true,
+	},
+	{
+		.desc = "number_of_dst is 19, AE, short",
+		.len = 2 + 13 * 19 + 6 - 1,
+		.number_of_dst = 19,
+		.ae_enabled_idx = 18,
+		.result = false,
+	},
+	{
+		.desc = "number_of_dst is 19, AE",
+		.len = 2 + 13 * 19 + 6,
+		.number_of_dst = 19,
+		.ae_enabled_idx = 18,
+		.result = true,
+	},
+};
+
+KUNIT_ARRAY_PARAM_DESC(mesh_perr_parse, mesh_perr_parse_cases, desc);
+
+
+static void mle_defrag(struct kunit *test)
+{
+	struct ieee80211_elems_parse_params parse_params = {
+		.link_id = 12,
+		.from_ap = true,
+		.mode = IEEE80211_CONN_MODE_EHT,
+		/* type is not really relevant here */
+		.type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON,
+	};
+	struct ieee802_11_elems *parsed;
+	struct sk_buff *skb;
+	u8 *len_mle, *len_prof;
+	int i;
+
+	skb = alloc_skb(1024, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_NULL(test, skb);
+
+	if (skb_pad(skb, skb_tailroom(skb))) {
+		KUNIT_FAIL(test, "failed to pad skb");
+		return;
+	}
+
+	/* build a multi-link element */
+	skb_put_u8(skb, WLAN_EID_EXTENSION);
+	len_mle = skb_put(skb, 1);
+	skb_put_u8(skb, WLAN_EID_EXT_EHT_MULTI_LINK);
+
+	put_unaligned_le16(IEEE80211_ML_CONTROL_TYPE_BASIC,
+			   skb_put(skb, 2));
+	/* struct ieee80211_mle_basic_common_info */
+	skb_put_u8(skb, 7); /* includes len field */
+	skb_put_data(skb, "\x00\x00\x00\x00\x00\x00", ETH_ALEN); /* MLD addr */
+
+	/* with a STA profile inside */
+	skb_put_u8(skb, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
+	len_prof = skb_put(skb, 1);
+	put_unaligned_le16(IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
+			   parse_params.link_id,
+			   skb_put(skb, 2));
+	skb_put_u8(skb, 1); /* fake sta_info_len - includes itself */
+	/* put a bunch of useless elements into it */
+	for (i = 0; i < 20; i++) {
+		skb_put_u8(skb, WLAN_EID_SSID);
+		skb_put_u8(skb, 20);
+		skb_put(skb, 20);
+	}
+
+	/* fragment STA profile */
+	ieee80211_fragment_element(skb, len_prof,
+				   IEEE80211_MLE_SUBELEM_FRAGMENT);
+	/* fragment MLE */
+	ieee80211_fragment_element(skb, len_mle, WLAN_EID_FRAGMENT);
+
+	parse_params.start = skb->data;
+	parse_params.len = skb->len;
+	parsed = ieee802_11_parse_elems_full(&parse_params);
+	/* should return ERR_PTR or valid, not NULL */
+	KUNIT_EXPECT_NOT_NULL(test, parsed);
+
+	if (IS_ERR_OR_NULL(parsed))
+		goto free_skb;
+
+	KUNIT_EXPECT_NOT_NULL(test, parsed->ml_basic);
+	KUNIT_EXPECT_EQ(test,
+			parsed->ml_basic_len,
+			2 /* control */ +
+			7 /* common info */ +
+			2 /* sta profile element header */ +
+			3 /* sta profile header */ +
+			20 * 22 /* sta profile data */ +
+			2 /* sta profile fragment element */);
+	KUNIT_EXPECT_NOT_NULL(test, parsed->prof);
+	KUNIT_EXPECT_EQ(test,
+			parsed->sta_prof_len,
+			3 /* sta profile header */ +
+			20 * 22 /* sta profile data */);
+
+	kfree(parsed);
+free_skb:
+	kfree_skb(skb);
+}
+
+static void mesh_preq_parse(struct kunit *test)
+{
+	const struct mesh_preq_parse_test_case *params = test->param_value;
+	u8 data[64] = {};
+	struct ieee80211_mesh_hwmp_preq_top *top = (void *)data;
+	struct ieee80211_mesh_hwmp_preq_bottom *bottom;
+
+	top->flags = params->ae_enabled ? AE_F : 0;
+	bottom = ieee80211_mesh_hwmp_preq_get_bottom(data);
+	bottom->target_count = params->target_count;
+
+	KUNIT_EXPECT_EQ(test,
+			ieee80211_mesh_preq_size_ok(data, params->len),
+			params->result);
+}
+
+static void mesh_prep_parse(struct kunit *test)
+{
+	const struct mesh_prep_parse_test_case *params = test->param_value;
+	u8 data[64] = {};
+	struct ieee80211_mesh_hwmp_prep_top *top = (void *)data;
+	top->flags = params->ae_enabled ? AE_F : 0;
+
+	KUNIT_EXPECT_EQ(test,
+			ieee80211_mesh_prep_size_ok(data, params->len),
+			params->result);
+}
+
+static void mesh_perr_parse(struct kunit *test)
+{
+	const struct mesh_perr_parse_test_case *params = test->param_value;
+	u8 data[256] = {};
+	struct ieee80211_mesh_hwmp_perr *perr = (void *)data;
+
+	perr->number_of_dst = params->number_of_dst;
+	if (params->ae_enabled_idx > -1) {
+		struct ieee80211_mesh_hwmp_perr_dst *dst =
+			ieee80211_mesh_hwmp_perr_get_dst(
+				data, params->ae_enabled_idx);
+
+		dst->flags = AE_F;
+	}
+
+	KUNIT_EXPECT_EQ(test,
+			ieee80211_mesh_perr_size_ok(data, params->len),
+			params->result);
+}
+
+static struct kunit_case element_parsing_test_cases[] = {
+	KUNIT_CASE(mle_defrag),
+	KUNIT_CASE_PARAM(mesh_preq_parse, mesh_preq_parse_gen_params),
+	KUNIT_CASE_PARAM(mesh_prep_parse, mesh_prep_parse_gen_params),
+	KUNIT_CASE_PARAM(mesh_perr_parse, mesh_perr_parse_gen_params),
+	{}
+};
+
+static struct kunit_suite element_parsing = {
+	.name = "mac80211-element-parsing",
+	.test_cases = element_parsing_test_cases,
+};
+
+kunit_test_suite(element_parsing);