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wifi: cfg80211: tests: add some scanning related tests

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This adds some scanning related tests, mainly exercising the ML element
parsing and inheritance.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://msgid.link/20231220151952.415232-7-benjamin@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Benjamin Berg 2023-12-20 16:19:52 +01:00 committed by Johannes Berg
parent bbd97bbed0
commit 9d027a35a5
6 changed files with 766 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
net/wireless/core.h
View File

@ -3,7 +3,7 @@
* Wireless configuration interface internals.
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2018-2022 Intel Corporation
* Copyright (C) 2018-2023 Intel Corporation
*/
#ifndef __NET_WIRELESS_CORE_H
#define __NET_WIRELESS_CORE_H
@ -549,4 +549,15 @@ int cfg80211_remove_virtual_intf(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev);
void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask);
#if IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST)
#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
#define VISIBLE_IF_CFG80211_KUNIT
size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
const u8 *subie, size_t subie_len,
u8 *new_ie, size_t new_ie_len);
#else
#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym)
#define VISIBLE_IF_CFG80211_KUNIT static
#endif /* IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST) */
#endif /* __NET_WIRELESS_CORE_H */

9
net/wireless/scan.c
View File

@ -20,6 +20,7 @@
#include <net/cfg80211.h>
#include <net/cfg80211-wext.h>
#include <net/iw_handler.h>
#include <kunit/visibility.h>
#include "core.h"
#include "nl80211.h"
#include "wext-compat.h"
@ -303,9 +304,10 @@ static size_t cfg80211_copy_elem_with_frags(const struct element *elem,
return *pos - buf;
}
static size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
const u8 *subie, size_t subie_len,
u8 *new_ie, size_t new_ie_len)
VISIBLE_IF_CFG80211_KUNIT size_t
cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
const u8 *subie, size_t subie_len,
u8 *new_ie, size_t new_ie_len)
{
const struct element *non_inherit_elem, *parent, *sub;
u8 *pos = new_ie;
@ -413,6 +415,7 @@ static size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
return pos - new_ie;
}
EXPORT_SYMBOL_IF_CFG80211_KUNIT(cfg80211_gen_new_ie);
static bool is_bss(struct cfg80211_bss *a, const u8 *bssid,
const u8 *ssid, size_t ssid_len)

2
net/wireless/tests/Makefile
View File

@ -1,3 +1,3 @@
cfg80211-tests-y += module.o fragmentation.o
cfg80211-tests-y += module.o fragmentation.o scan.o util.o
obj-$(CONFIG_CFG80211_KUNIT_TEST) += cfg80211-tests.o

625
net/wireless/tests/scan.c Normal file
View File

@ -0,0 +1,625 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* KUnit tests for inform_bss functions
*
* Copyright (C) 2023 Intel Corporation
*/
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include <kunit/test.h>
#include <kunit/skbuff.h>
#include "../core.h"
#include "util.h"
/* mac80211 helpers for element building */
#include "../../mac80211/ieee80211_i.h"
MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
struct test_elem {
u8 id;
u8 len;
union {
u8 data[255];
struct {
u8 eid;
u8 edata[254];
};
};
};
static struct gen_new_ie_case {
const char *desc;
struct test_elem parent_ies[16];
struct test_elem child_ies[16];
struct test_elem result_ies[16];
} gen_new_ie_cases[] = {
{
.desc = "ML not inherited",
.parent_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 255,
.eid = WLAN_EID_EXT_EHT_MULTI_LINK },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "fragments are ignored if previous len not 255",
.parent_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 254, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
},
.result_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 254, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "fragments inherited",
.parent_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "fragments copied",
.parent_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "multiple elements inherit",
.parent_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "one child element overrides",
.parent_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
{ .id = WLAN_EID_FRAGMENT, .len = 125, },
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
},
.child_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 127, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 127, },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
{
.desc = "empty elements from parent",
.parent_ies = {
{ .id = 0x1, .len = 0, },
{ .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
},
.child_ies = {
},
.result_ies = {
{ .id = 0x1, .len = 0, },
{ .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
},
},
{
.desc = "empty elements from child",
.parent_ies = {
},
.child_ies = {
{ .id = 0x1, .len = 0, },
{ .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
},
.result_ies = {
{ .id = 0x1, .len = 0, },
{ .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
},
},
{
.desc = "invalid extended elements ignored",
.parent_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 0 },
},
.child_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 0 },
},
.result_ies = {
},
},
{
.desc = "multiple extended elements",
.parent_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 3,
.eid = WLAN_EID_EXT_HE_CAPABILITY },
{ .id = WLAN_EID_EXTENSION, .len = 5,
.eid = WLAN_EID_EXT_ASSOC_DELAY_INFO },
{ .id = WLAN_EID_EXTENSION, .len = 7,
.eid = WLAN_EID_EXT_HE_OPERATION },
{ .id = WLAN_EID_EXTENSION, .len = 11,
.eid = WLAN_EID_EXT_FILS_REQ_PARAMS },
},
.child_ies = {
{ .id = WLAN_EID_SSID, .len = 13 },
{ .id = WLAN_EID_EXTENSION, .len = 17,
.eid = WLAN_EID_EXT_HE_CAPABILITY },
{ .id = WLAN_EID_EXTENSION, .len = 11,
.eid = WLAN_EID_EXT_FILS_KEY_CONFIRM },
{ .id = WLAN_EID_EXTENSION, .len = 19,
.eid = WLAN_EID_EXT_HE_OPERATION },
},
.result_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 17,
.eid = WLAN_EID_EXT_HE_CAPABILITY },
{ .id = WLAN_EID_EXTENSION, .len = 5,
.eid = WLAN_EID_EXT_ASSOC_DELAY_INFO },
{ .id = WLAN_EID_EXTENSION, .len = 19,
.eid = WLAN_EID_EXT_HE_OPERATION },
{ .id = WLAN_EID_EXTENSION, .len = 11,
.eid = WLAN_EID_EXT_FILS_REQ_PARAMS },
{ .id = WLAN_EID_SSID, .len = 13 },
{ .id = WLAN_EID_EXTENSION, .len = 11,
.eid = WLAN_EID_EXT_FILS_KEY_CONFIRM },
},
},
{
.desc = "non-inherit element",
.parent_ies = {
{ .id = 0x1, .len = 7, },
{ .id = 0x2, .len = 11, },
{ .id = 0x3, .len = 13, },
{ .id = WLAN_EID_EXTENSION, .len = 17, .eid = 0x10 },
{ .id = WLAN_EID_EXTENSION, .len = 19, .eid = 0x11 },
{ .id = WLAN_EID_EXTENSION, .len = 23, .eid = 0x12 },
{ .id = WLAN_EID_EXTENSION, .len = 29, .eid = 0x14 },
},
.child_ies = {
{ .id = WLAN_EID_EXTENSION,
.eid = WLAN_EID_EXT_NON_INHERITANCE,
.len = 10,
.edata = { 0x3, 0x1, 0x2, 0x3,
0x4, 0x10, 0x11, 0x13, 0x14 } },
{ .id = WLAN_EID_SSID, .len = 2 },
},
.result_ies = {
{ .id = WLAN_EID_EXTENSION, .len = 23, .eid = 0x12 },
{ .id = WLAN_EID_SSID, .len = 2 },
},
},
};
KUNIT_ARRAY_PARAM_DESC(gen_new_ie, gen_new_ie_cases, desc)
static void test_gen_new_ie(struct kunit *test)
{
const struct gen_new_ie_case *params = test->param_value;
struct sk_buff *parent = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
struct sk_buff *child = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
struct sk_buff *reference = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
u8 *out = kunit_kzalloc(test, IEEE80211_MAX_DATA_LEN, GFP_KERNEL);
size_t len;
int i;
KUNIT_ASSERT_NOT_NULL(test, parent);
KUNIT_ASSERT_NOT_NULL(test, child);
KUNIT_ASSERT_NOT_NULL(test, reference);
KUNIT_ASSERT_NOT_NULL(test, out);
for (i = 0; i < ARRAY_SIZE(params->parent_ies); i++) {
if (params->parent_ies[i].len != 0) {
skb_put_u8(parent, params->parent_ies[i].id);
skb_put_u8(parent, params->parent_ies[i].len);
skb_put_data(parent, params->parent_ies[i].data,
params->parent_ies[i].len);
}
if (params->child_ies[i].len != 0) {
skb_put_u8(child, params->child_ies[i].id);
skb_put_u8(child, params->child_ies[i].len);
skb_put_data(child, params->child_ies[i].data,
params->child_ies[i].len);
}
if (params->result_ies[i].len != 0) {
skb_put_u8(reference, params->result_ies[i].id);
skb_put_u8(reference, params->result_ies[i].len);
skb_put_data(reference, params->result_ies[i].data,
params->result_ies[i].len);
}
}
len = cfg80211_gen_new_ie(parent->data, parent->len,
child->data, child->len,
out, IEEE80211_MAX_DATA_LEN);
KUNIT_EXPECT_EQ(test, len, reference->len);
KUNIT_EXPECT_MEMEQ(test, out, reference->data, reference->len);
memset(out, 0, IEEE80211_MAX_DATA_LEN);
/* Exactly enough space */
len = cfg80211_gen_new_ie(parent->data, parent->len,
child->data, child->len,
out, reference->len);
KUNIT_EXPECT_EQ(test, len, reference->len);
KUNIT_EXPECT_MEMEQ(test, out, reference->data, reference->len);
memset(out, 0, IEEE80211_MAX_DATA_LEN);
/* Not enough space (or expected zero length) */
len = cfg80211_gen_new_ie(parent->data, parent->len,
child->data, child->len,
out, reference->len - 1);
KUNIT_EXPECT_EQ(test, len, 0);
}
static void test_gen_new_ie_malformed(struct kunit *test)
{
struct sk_buff *malformed = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
u8 *out = kunit_kzalloc(test, IEEE80211_MAX_DATA_LEN, GFP_KERNEL);
size_t len;
KUNIT_ASSERT_NOT_NULL(test, malformed);
KUNIT_ASSERT_NOT_NULL(test, out);
skb_put_u8(malformed, WLAN_EID_SSID);
skb_put_u8(malformed, 3);
skb_put(malformed, 3);
skb_put_u8(malformed, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
skb_put_u8(malformed, 10);
skb_put(malformed, 9);
len = cfg80211_gen_new_ie(malformed->data, malformed->len,
out, 0,
out, IEEE80211_MAX_DATA_LEN);
KUNIT_EXPECT_EQ(test, len, 5);
len = cfg80211_gen_new_ie(out, 0,
malformed->data, malformed->len,
out, IEEE80211_MAX_DATA_LEN);
KUNIT_EXPECT_EQ(test, len, 5);
}
struct inform_bss {
struct kunit *test;
int inform_bss_count;
};
static void inform_bss_inc_counter(struct wiphy *wiphy,
struct cfg80211_bss *bss,
const struct cfg80211_bss_ies *ies,
void *drv_data)
{
struct inform_bss *ctx = t_wiphy_ctx(wiphy);
ctx->inform_bss_count++;
rcu_read_lock();
KUNIT_EXPECT_PTR_EQ(ctx->test, drv_data, ctx);
KUNIT_EXPECT_PTR_EQ(ctx->test, ies, rcu_dereference(bss->ies));
rcu_read_unlock();
}
static void test_inform_bss_ssid_only(struct kunit *test)
{
struct inform_bss ctx = {
.test = test,
};
struct wiphy *wiphy = T_WIPHY(test, ctx);
struct t_wiphy_priv *w_priv = wiphy_priv(wiphy);
struct cfg80211_inform_bss inform_bss = {
.signal = 50,
.drv_data = &ctx,
};
const u8 bssid[ETH_ALEN] = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x66 };
u64 tsf = 0x1000000000000000ULL;
int beacon_int = 100;
u16 capability = 0x1234;
static const u8 input[] = {
[0] = WLAN_EID_SSID,
[1] = 4,
[2] = 'T', 'E', 'S', 'T'
};
struct cfg80211_bss *bss, *other;
const struct cfg80211_bss_ies *ies;
w_priv->ops->inform_bss = inform_bss_inc_counter;
inform_bss.chan = ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2412));
KUNIT_ASSERT_NOT_NULL(test, inform_bss.chan);
bss = cfg80211_inform_bss_data(wiphy, &inform_bss,
CFG80211_BSS_FTYPE_PRESP, bssid, tsf,
capability, beacon_int,
input, sizeof(input),
GFP_KERNEL);
KUNIT_EXPECT_NOT_NULL(test, bss);
KUNIT_EXPECT_EQ(test, ctx.inform_bss_count, 1);
/* Check values in returned bss are correct */
KUNIT_EXPECT_EQ(test, bss->signal, inform_bss.signal);
KUNIT_EXPECT_EQ(test, bss->beacon_interval, beacon_int);
KUNIT_EXPECT_EQ(test, bss->capability, capability);
KUNIT_EXPECT_EQ(test, bss->bssid_index, 0);
KUNIT_EXPECT_PTR_EQ(test, bss->channel, inform_bss.chan);
KUNIT_EXPECT_MEMEQ(test, bssid, bss->bssid, sizeof(bssid));
/* Check the IEs have the expected value */
rcu_read_lock();
ies = rcu_dereference(bss->ies);
KUNIT_EXPECT_NOT_NULL(test, ies);
KUNIT_EXPECT_EQ(test, ies->tsf, tsf);
KUNIT_EXPECT_EQ(test, ies->len, sizeof(input));
KUNIT_EXPECT_MEMEQ(test, ies->data, input, sizeof(input));
rcu_read_unlock();
/* Check we can look up the BSS - by SSID */
other = cfg80211_get_bss(wiphy, NULL, NULL, "TEST", 4,
IEEE80211_BSS_TYPE_ANY,
IEEE80211_PRIVACY_ANY);
KUNIT_EXPECT_PTR_EQ(test, bss, other);
cfg80211_put_bss(wiphy, other);
/* Check we can look up the BSS - by BSSID */
other = cfg80211_get_bss(wiphy, NULL, bssid, NULL, 0,
IEEE80211_BSS_TYPE_ANY,
IEEE80211_PRIVACY_ANY);
KUNIT_EXPECT_PTR_EQ(test, bss, other);
cfg80211_put_bss(wiphy, other);
cfg80211_put_bss(wiphy, bss);
}
static struct inform_bss_ml_sta_case {
const char *desc;
int mld_id;
bool sta_prof_vendor_elems;
} inform_bss_ml_sta_cases[] = {
{ .desc = "no_mld_id", .mld_id = 0, .sta_prof_vendor_elems = false },
{ .desc = "mld_id_eq_1", .mld_id = 1, .sta_prof_vendor_elems = true },
};
KUNIT_ARRAY_PARAM_DESC(inform_bss_ml_sta, inform_bss_ml_sta_cases, desc)
static void test_inform_bss_ml_sta(struct kunit *test)
{
const struct inform_bss_ml_sta_case *params = test->param_value;
struct inform_bss ctx = {
.test = test,
};
struct wiphy *wiphy = T_WIPHY(test, ctx);
struct t_wiphy_priv *w_priv = wiphy_priv(wiphy);
struct cfg80211_inform_bss inform_bss = {
.signal = 50,
.drv_data = &ctx,
};
struct cfg80211_bss *bss, *link_bss;
const struct cfg80211_bss_ies *ies;
/* sending station */
const u8 bssid[ETH_ALEN] = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x66 };
u64 tsf = 0x1000000000000000ULL;
int beacon_int = 100;
u16 capability = 0x1234;
/* Building the frame *************************************************/
struct sk_buff *input = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
u8 *len_mle, *len_prof;
u8 link_id = 2;
struct {
struct ieee80211_neighbor_ap_info info;
struct ieee80211_tbtt_info_ge_11 ap;
} __packed rnr = {
.info = {
.tbtt_info_hdr = u8_encode_bits(0, IEEE80211_AP_INFO_TBTT_HDR_COUNT),
.tbtt_info_len = sizeof(struct ieee80211_tbtt_info_ge_11),
.op_class = 81,
.channel = 11,
},
.ap = {
.tbtt_offset = 0xff,
.bssid = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x67 },
.short_ssid = 0, /* unused */
.bss_params = 0,
.psd_20 = 0,
.mld_params.mld_id = params->mld_id,
.mld_params.params =
le16_encode_bits(link_id,
IEEE80211_RNR_MLD_PARAMS_LINK_ID),
}
};
struct {
__le16 control;
u8 var_len;
u8 mld_mac_addr[ETH_ALEN];
u8 link_id_info;
u8 params_change_count;
__le16 mld_caps_and_ops;
u8 mld_id;
__le16 ext_mld_caps_and_ops;
} __packed mle_basic_common_info = {
.control =
cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC |
IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT |
IEEE80211_MLC_BASIC_PRES_LINK_ID |
(params->mld_id ? IEEE80211_MLC_BASIC_PRES_MLD_ID : 0) |
IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP),
.mld_id = params->mld_id,
.mld_caps_and_ops = cpu_to_le16(0x0102),
.ext_mld_caps_and_ops = cpu_to_le16(0x0304),
.var_len = sizeof(mle_basic_common_info) - 2 -
(params->mld_id ? 0 : 1),
.mld_mac_addr = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x60 },
};
struct {
__le16 control;
u8 var_len;
u8 bssid[ETH_ALEN];
__le16 beacon_int;
__le64 tsf_offset;
__le16 capabilities; /* already part of payload */
} __packed sta_prof = {
.control =
cpu_to_le16(IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT |
IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT |
IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT |
u16_encode_bits(link_id,
IEEE80211_MLE_STA_CONTROL_LINK_ID)),
.var_len = sizeof(sta_prof) - 2 - 2,
.bssid = { *rnr.ap.bssid },
.beacon_int = cpu_to_le16(101),
.tsf_offset = cpu_to_le64(-123ll),
.capabilities = cpu_to_le16(0xdead),
};
KUNIT_ASSERT_NOT_NULL(test, input);
w_priv->ops->inform_bss = inform_bss_inc_counter;
inform_bss.chan = ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2412));
KUNIT_ASSERT_NOT_NULL(test, inform_bss.chan);
skb_put_u8(input, WLAN_EID_SSID);
skb_put_u8(input, 4);
skb_put_data(input, "TEST", 4);
skb_put_u8(input, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
skb_put_u8(input, sizeof(rnr));
skb_put_data(input, &rnr, sizeof(rnr));
/* build a multi-link element */
skb_put_u8(input, WLAN_EID_EXTENSION);
len_mle = skb_put(input, 1);
skb_put_u8(input, WLAN_EID_EXT_EHT_MULTI_LINK);
skb_put_data(input, &mle_basic_common_info, sizeof(mle_basic_common_info));
if (!params->mld_id)
t_skb_remove_member(input, typeof(mle_basic_common_info), mld_id);
/* with a STA profile inside */
skb_put_u8(input, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
len_prof = skb_put(input, 1);
skb_put_data(input, &sta_prof, sizeof(sta_prof));
if (params->sta_prof_vendor_elems) {
/* Put two (vendor) element into sta_prof */
skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
skb_put_u8(input, 160);
skb_put(input, 160);
skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
skb_put_u8(input, 165);
skb_put(input, 165);
}
/* fragment STA profile */
ieee80211_fragment_element(input, len_prof,
IEEE80211_MLE_SUBELEM_FRAGMENT);
/* fragment MLE */
ieee80211_fragment_element(input, len_mle, WLAN_EID_FRAGMENT);
/* Put a (vendor) element after the ML element */
skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
skb_put_u8(input, 155);
skb_put(input, 155);
/* Submit *************************************************************/
bss = cfg80211_inform_bss_data(wiphy, &inform_bss,
CFG80211_BSS_FTYPE_PRESP, bssid, tsf,
capability, beacon_int,
input->data, input->len,
GFP_KERNEL);
KUNIT_EXPECT_NOT_NULL(test, bss);
KUNIT_EXPECT_EQ(test, ctx.inform_bss_count, 2);
/* Check link_bss *****************************************************/
link_bss = cfg80211_get_bss(wiphy, NULL, sta_prof.bssid, NULL, 0,
IEEE80211_BSS_TYPE_ANY,
IEEE80211_PRIVACY_ANY);
KUNIT_ASSERT_NOT_NULL(test, link_bss);
KUNIT_EXPECT_EQ(test, link_bss->signal, 0);
KUNIT_EXPECT_EQ(test, link_bss->beacon_interval,
le16_to_cpu(sta_prof.beacon_int));
KUNIT_EXPECT_EQ(test, link_bss->capability,
le16_to_cpu(sta_prof.capabilities));
KUNIT_EXPECT_EQ(test, link_bss->bssid_index, 0);
KUNIT_EXPECT_PTR_EQ(test, link_bss->channel,
ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2462)));
rcu_read_lock();
ies = rcu_dereference(link_bss->ies);
KUNIT_EXPECT_NOT_NULL(test, ies);
KUNIT_EXPECT_EQ(test, ies->tsf, tsf + le64_to_cpu(sta_prof.tsf_offset));
/* Resulting length should be:
* SSID (inherited) + RNR (inherited) + vendor element(s) +
* MLE common info + MLE header and control
*/
if (params->sta_prof_vendor_elems)
KUNIT_EXPECT_EQ(test, ies->len,
6 + 2 + sizeof(rnr) + 2 + 160 + 2 + 165 +
mle_basic_common_info.var_len + 5);
else
KUNIT_EXPECT_EQ(test, ies->len,
6 + 2 + sizeof(rnr) + 2 + 155 +
mle_basic_common_info.var_len + 5);
rcu_read_unlock();
cfg80211_put_bss(wiphy, bss);
cfg80211_put_bss(wiphy, link_bss);
}
static struct kunit_case gen_new_ie_test_cases[] = {
KUNIT_CASE_PARAM(test_gen_new_ie, gen_new_ie_gen_params),
KUNIT_CASE(test_gen_new_ie_malformed),
{}
};
static struct kunit_suite gen_new_ie = {
.name = "cfg80211-ie-generation",
.test_cases = gen_new_ie_test_cases,
};
kunit_test_suite(gen_new_ie);
static struct kunit_case inform_bss_test_cases[] = {
KUNIT_CASE(test_inform_bss_ssid_only),
KUNIT_CASE_PARAM(test_inform_bss_ml_sta, inform_bss_ml_sta_gen_params),
{}
};
static struct kunit_suite inform_bss = {
.name = "cfg80211-inform-bss",
.test_cases = inform_bss_test_cases,
};
kunit_test_suite(inform_bss);

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net/wireless/tests/util.c Normal file
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// SPDX-License-Identifier: GPL-2.0-only
/*
* KUnit fixture to have a (configurable) wiphy
*
* Copyright (C) 2023 Intel Corporation
*/
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include <kunit/test.h>
#include <kunit/test-bug.h>
#include "util.h"
int t_wiphy_init(struct kunit_resource *resource, void *ctx)
{
struct kunit *test = kunit_get_current_test();
struct cfg80211_ops *ops;
struct wiphy *wiphy;
struct t_wiphy_priv *priv;
ops = kzalloc(sizeof(*ops), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ops);
wiphy = wiphy_new_nm(ops, sizeof(*priv), "kunit");
KUNIT_ASSERT_NOT_NULL(test, wiphy);
priv = wiphy_priv(wiphy);
priv->ctx = ctx;
priv->ops = ops;
/* Initialize channels, feel free to add more here channels/bands */
memcpy(priv->channels_2ghz, channels_2ghz, sizeof(channels_2ghz));
wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_2ghz;
priv->band_2ghz.channels = priv->channels_2ghz;
priv->band_2ghz.n_channels = ARRAY_SIZE(channels_2ghz);
resource->data = wiphy;
resource->name = "wiphy";
return 0;
}
void t_wiphy_exit(struct kunit_resource *resource)
{
struct t_wiphy_priv *priv;
struct cfg80211_ops *ops;
priv = wiphy_priv(resource->data);
ops = priv->ops;
/* Should we ensure anything about the state here?
* e.g. full destruction or no calls to any ops on destruction?
*/
wiphy_free(resource->data);
kfree(ops);
}

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Utilities for cfg80211 unit testing
*
* Copyright (C) 2023 Intel Corporation
*/
#ifndef __CFG80211_UTILS_H
#define __CFG80211_UTILS_H
#define CHAN2G(_freq) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
}
static const struct ieee80211_channel channels_2ghz[] = {
CHAN2G(2412), /* Channel 1 */
CHAN2G(2417), /* Channel 2 */
CHAN2G(2422), /* Channel 3 */
CHAN2G(2427), /* Channel 4 */
CHAN2G(2432), /* Channel 5 */
CHAN2G(2437), /* Channel 6 */
CHAN2G(2442), /* Channel 7 */
CHAN2G(2447), /* Channel 8 */
CHAN2G(2452), /* Channel 9 */
CHAN2G(2457), /* Channel 10 */
CHAN2G(2462), /* Channel 11 */
CHAN2G(2467), /* Channel 12 */
CHAN2G(2472), /* Channel 13 */
CHAN2G(2484), /* Channel 14 */
};
struct t_wiphy_priv {
struct kunit *test;
struct cfg80211_ops *ops;
void *ctx;
struct ieee80211_supported_band band_2ghz;
struct ieee80211_channel channels_2ghz[ARRAY_SIZE(channels_2ghz)];
};
#define T_WIPHY(test, ctx) ({ \
struct wiphy *__wiphy = \
kunit_alloc_resource(test, t_wiphy_init, \
t_wiphy_exit, \
GFP_KERNEL, &(ctx)); \
\
KUNIT_ASSERT_NOT_NULL(test, __wiphy); \
__wiphy; \
})
#define t_wiphy_ctx(wiphy) (((struct t_wiphy_priv *)wiphy_priv(wiphy))->ctx)
int t_wiphy_init(struct kunit_resource *resource, void *data);
void t_wiphy_exit(struct kunit_resource *resource);
#define t_skb_remove_member(skb, type, member) do { \
memmove((skb)->data + (skb)->len - sizeof(type) + \
offsetof(type, member), \
(skb)->data + (skb)->len - sizeof(type) + \
offsetofend(type, member), \
offsetofend(type, member)); \
skb_trim(skb, (skb)->len - sizeof_field(type, member)); \
} while (0)
#endif /* __CFG80211_UTILS_H */