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wil6210: check mid is valid

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Check that the mid is valid and that it does not exceed the memory
size allocated to vifs array.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Ahmad Masri 2019-02-28 11:34:52 +02:00 committed by Kalle Valo
parent 044974fbea
commit e4a29bdd8f
8 changed files with 24 additions and 23 deletions
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6
drivers/net/wireless/ath/wil6210/cfg80211.c
View File

@ -465,7 +465,7 @@ static int wil_cfg80211_validate_add_iface(struct wil6210_priv *wil,
.num_different_channels = 1,
};
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
if (wil->vifs[i]) {
wdev = vif_to_wdev(wil->vifs[i]);
params.iftype_num[wdev->iftype]++;
@ -486,7 +486,7 @@ static int wil_cfg80211_validate_change_iface(struct wil6210_priv *wil,
};
bool check_combos = false;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif_pos = wil->vifs[i];
if (vif_pos && vif != vif_pos) {
@ -1806,7 +1806,7 @@ void wil_cfg80211_ap_recovery(struct wil6210_priv *wil)
int rc, i;
struct wiphy *wiphy = wil_to_wiphy(wil);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif = wil->vifs[i];
struct net_device *ndev;
struct cfg80211_beacon_data bcon = {};

10
drivers/net/wireless/ath/wil6210/debugfs.c
View File

@ -1381,7 +1381,7 @@ static int link_show(struct seq_file *s, void *data)
if (p->status != wil_sta_connected)
continue;
vif = (mid < wil->max_vifs) ? wil->vifs[mid] : NULL;
vif = (mid < GET_MAX_VIFS(wil)) ? wil->vifs[mid] : NULL;
if (vif) {
rc = wil_cid_fill_sinfo(vif, i, sinfo);
if (rc)
@ -1579,7 +1579,7 @@ __acquires(&p->tid_rx_lock) __releases(&p->tid_rx_lock)
break;
}
mid = (p->status != wil_sta_unused) ? p->mid : U8_MAX;
if (mid < wil->max_vifs) {
if (mid < GET_MAX_VIFS(wil)) {
struct wil6210_vif *vif = wil->vifs[mid];
if (vif->wdev.iftype == NL80211_IFTYPE_STATION &&
@ -1645,7 +1645,7 @@ static int mids_show(struct seq_file *s, void *data)
int i;
mutex_lock(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif) {
@ -1866,7 +1866,7 @@ static int wil_link_stats_debugfs_show(struct seq_file *s, void *data)
/* iterate over all MIDs and show per-cid statistics. Then show the
* global statistics
*/
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
seq_printf(s, "MID %d ", i);
@ -1922,7 +1922,7 @@ static ssize_t wil_link_stats_write(struct file *file, const char __user *buf,
if (rc)
return rc;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (!vif)
continue;

8
drivers/net/wireless/ath/wil6210/main.c
View File

@ -685,7 +685,7 @@ void wil_bcast_fini_all(struct wil6210_priv *wil)
int i;
struct wil6210_vif *vif;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif)
wil_bcast_fini(vif);
@ -1483,7 +1483,7 @@ void wil_abort_scan_all_vifs(struct wil6210_priv *wil, bool sync)
lockdep_assert_held(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif = wil->vifs[i];
if (vif)
@ -1551,7 +1551,7 @@ static int wil_restore_vifs(struct wil6210_priv *wil)
struct wireless_dev *wdev;
int i, rc;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (!vif)
continue;
@ -1627,7 +1627,7 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
wil_abort_scan_all_vifs(wil, false);
mutex_unlock(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif) {
cancel_work_sync(&vif->disconnect_worker);

10
drivers/net/wireless/ath/wil6210/netdev.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -27,7 +27,7 @@ bool wil_has_other_active_ifaces(struct wil6210_priv *wil,
struct wil6210_vif *vif;
struct net_device *ndev_i;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif) {
ndev_i = vif_to_ndev(vif);
@ -155,7 +155,7 @@ static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget)
struct wil6210_vif *vif;
if (!ring->va || !txdata->enabled ||
txdata->mid >= wil->max_vifs)
txdata->mid >= GET_MAX_VIFS(wil))
continue;
vif = wil->vifs[txdata->mid];
@ -294,7 +294,7 @@ static u8 wil_vif_find_free_mid(struct wil6210_priv *wil)
{
u8 i;
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
if (!wil->vifs[i])
return i;
}
@ -500,7 +500,7 @@ void wil_vif_remove(struct wil6210_priv *wil, u8 mid)
bool any_active = wil_has_active_ifaces(wil, true, false);
ASSERT_RTNL();
if (mid >= wil->max_vifs) {
if (mid >= GET_MAX_VIFS(wil)) {
wil_err(wil, "invalid MID: %d\n", mid);
return;
}

4
drivers/net/wireless/ath/wil6210/pcie_bus.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -176,7 +176,7 @@ static void wil_remove_all_additional_vifs(struct wil6210_priv *wil)
struct wil6210_vif *vif;
int i;
for (i = 1; i < wil->max_vifs; i++) {
for (i = 1; i < GET_MAX_VIFS(wil); i++) {
vif = wil->vifs[i];
if (vif) {
wil_vif_prepare_stop(vif);

6
drivers/net/wireless/ath/wil6210/pm.c
View File

@ -26,7 +26,7 @@ static void wil_pm_wake_connected_net_queues(struct wil6210_priv *wil)
int i;
mutex_lock(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif = wil->vifs[i];
if (vif && test_bit(wil_vif_fwconnected, vif->status))
@ -40,7 +40,7 @@ static void wil_pm_stop_all_net_queues(struct wil6210_priv *wil)
int i;
mutex_lock(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif = wil->vifs[i];
if (vif)
@ -123,7 +123,7 @@ int wil_can_suspend(struct wil6210_priv *wil, bool is_runtime)
/* interface is running */
mutex_lock(&wil->vif_mutex);
for (i = 0; i < wil->max_vifs; i++) {
for (i = 0; i < GET_MAX_VIFS(wil); i++) {
struct wil6210_vif *vif = wil->vifs[i];
if (!vif)

1
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -1061,6 +1061,7 @@ struct wil6210_priv {
#define vif_to_wil(v) (v->wil)
#define vif_to_ndev(v) (v->ndev)
#define vif_to_wdev(v) (&v->wdev)
#define GET_MAX_VIFS(wil) min_t(int, (wil)->max_vifs, WIL_MAX_VIFS)
static inline struct wil6210_vif *wdev_to_vif(struct wil6210_priv *wil,
struct wireless_dev *wdev)

2
drivers/net/wireless/ath/wil6210/wmi.c
View File

@ -3205,7 +3205,7 @@ static void wmi_event_handle(struct wil6210_priv *wil,
if (mid == MID_BROADCAST)
mid = 0;
if (mid >= ARRAY_SIZE(wil->vifs) || mid >= wil->max_vifs) {
if (mid >= GET_MAX_VIFS(wil)) {
wil_dbg_wmi(wil, "invalid mid %d, event skipped\n",
mid);
return;