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// SPDX-License-Identifier: GPL-2.0-only
/*
* KUnit tests for management frame acceptance
*
* Copyright (C) 2023 Intel Corporation
*/
#include <kunit/test.h>
#include <kunit/skbuff.h>
#include "../ieee80211_i.h"
#include "../sta_info.h"
MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
static const struct mfp_test_case {
const char *desc;
bool sta, mfp, decrypted, unicast, assoc;
u8 category;
u8 stype;
u8 action;
ieee80211_rx_result result;
} accept_mfp_cases[] = {
/* regular public action */
{
.desc = "public action: accept unicast from unknown peer",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.result = RX_CONTINUE,
},
{
.desc = "public action: accept multicast from unknown peer",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.result = RX_CONTINUE,
},
{
.desc = "public action: accept unicast without MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.sta = true,
.result = RX_CONTINUE,
},
{
.desc = "public action: accept multicast without MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.sta = true,
.result = RX_CONTINUE,
},
{
.desc = "public action: drop unicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.sta = true,
.mfp = true,
.result = RX_DROP_U_UNPROT_UNICAST_PUB_ACTION,
},
{
.desc = "public action: accept multicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PUBLIC,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.sta = true,
.mfp = true,
.result = RX_CONTINUE,
},
/* protected dual of public action */
{
.desc = "protected dual: drop unicast from unknown peer",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: drop multicast from unknown peer",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: drop unicast without MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.sta = true,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: drop multicast without MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.sta = true,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: drop undecrypted unicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = true,
.sta = true,
.mfp = true,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: drop undecrypted multicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.unicast = false,
.sta = true,
.mfp = true,
.result = RX_DROP_U_UNPROT_DUAL,
},
{
.desc = "protected dual: accept unicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.decrypted = true,
.unicast = true,
.sta = true,
.mfp = true,
.result = RX_CONTINUE,
},
{
.desc = "protected dual: accept multicast with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION,
.action = WLAN_PUB_ACTION_DSE_ENABLEMENT,
.decrypted = true,
.unicast = false,
.sta = true,
.mfp = true,
.result = RX_CONTINUE,
},
/* deauth/disassoc before keys are set */
{
.desc = "deauth: accept unicast with MFP but w/o key",
.stype = IEEE80211_STYPE_DEAUTH,
.sta = true,
.mfp = true,
.unicast = true,
.result = RX_CONTINUE,
},
{
.desc = "disassoc: accept unicast with MFP but w/o key",
.stype = IEEE80211_STYPE_DEAUTH,
.sta = true,
.mfp = true,
.unicast = true,
.result = RX_CONTINUE,
},
/* non-public robust action frame ... */
{
.desc = "BA action: drop unicast before assoc",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_BACK,
.unicast = true,
.sta = true,
.result = RX_DROP_U_UNPROT_ROBUST_ACTION,
},
{
.desc = "BA action: drop unprotected after assoc",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_BACK,
.unicast = true,
.sta = true,
.mfp = true,
.result = RX_DROP_U_UNPROT_UCAST_MGMT,
},
{
.desc = "BA action: accept unprotected without MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_BACK,
.unicast = true,
.sta = true,
.assoc = true,
.mfp = false,
.result = RX_CONTINUE,
},
{
.desc = "BA action: drop unprotected with MFP",
.stype = IEEE80211_STYPE_ACTION,
.category = WLAN_CATEGORY_BACK,
.unicast = true,
.sta = true,
.mfp = true,
.result = RX_DROP_U_UNPROT_UCAST_MGMT,
},
};
KUNIT_ARRAY_PARAM_DESC(accept_mfp, accept_mfp_cases, desc);
static void accept_mfp(struct kunit *test)
{
static struct sta_info sta;
const struct mfp_test_case *params = test->param_value;
struct ieee80211_rx_data rx = {
.sta = params->sta ? &sta : NULL,
};
struct ieee80211_rx_status *status;
struct ieee80211_hdr_3addr hdr = {
.frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
params->stype),
.addr1 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
.addr2 = { 0x12, 0x22, 0x33, 0x44, 0x55, 0x66 },
/* A3/BSSID doesn't matter here */
};
memset(&sta, 0, sizeof(sta));
if (!params->sta) {
KUNIT_ASSERT_FALSE(test, params->mfp);
KUNIT_ASSERT_FALSE(test, params->decrypted);
}
if (params->mfp)
set_sta_flag(&sta, WLAN_STA_MFP);
if (params->assoc)
set_bit(WLAN_STA_ASSOC, &sta._flags);
rx.skb = kunit_zalloc_skb(test, 128, GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, rx.skb);
status = IEEE80211_SKB_RXCB(rx.skb);
if (params->decrypted) {
status->flag |= RX_FLAG_DECRYPTED;
if (params->unicast)
hdr.frame_control |=
cpu_to_le16(IEEE80211_FCTL_PROTECTED);
}
if (params->unicast)
hdr.addr1[0] = 0x02;
skb_put_data(rx.skb, &hdr, sizeof(hdr));
switch (params->stype) {
case IEEE80211_STYPE_ACTION:
skb_put_u8(rx.skb, params->category);
skb_put_u8(rx.skb, params->action);
break;
case IEEE80211_STYPE_DEAUTH:
case IEEE80211_STYPE_DISASSOC: {
__le16 reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
skb_put_data(rx.skb, &reason, sizeof(reason));
}
break;
}
KUNIT_EXPECT_EQ(test,
(__force u32)ieee80211_drop_unencrypted_mgmt(&rx),
(__force u32)params->result);
}
static struct kunit_case mfp_test_cases[] = {
KUNIT_CASE_PARAM(accept_mfp, accept_mfp_gen_params),
{}
};
static struct kunit_suite mfp = {
.name = "mac80211-mfp",
.test_cases = mfp_test_cases,
};
kunit_test_suite(mfp);
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