* [PATCH v2 0/6] Avoid clashing function prototypes
@ 2022-10-27 20:16 Gustavo A. R. Silva
2022-10-27 20:17 ` [PATCH v2 1/6] cfg80211: " Gustavo A. R. Silva
` (5 more replies)
0 siblings, 6 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:16 UTC (permalink / raw)
To: Kalle Valo, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Greg Kroah-Hartman, Jouni Malinen,
Stanislav Yakovlev, Johannes Berg
Cc: linux-staging, netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
This series fixes a total of 424 -Wcast-function-type-strict warnings.
Link: https://reviews.llvm.org/D134831 [1]
Changes in v2:
- Squash previous patches 1, 2 and 3 into a single patch
cfg80211.
- Add a couple more patches: bna and staging.
- Fix 254 (227 in bna and 27 in staging) more
-Wcast-function-type-strict warnings.
v1:
- Link: https://lore.kernel.org/linux-hardening/cover.1666038048.git.gustavoars@kernel.org/
Gustavo A. R. Silva (6):
cfg80211: Avoid clashing function prototypes
hostap: Avoid clashing function prototypes
zd1201: Avoid clashing function prototypes
airo: Avoid clashing function prototypes
bna: Avoid clashing function prototypes
staging: ks7010: Avoid clashing function prototypes
drivers/net/ethernet/brocade/bna/bfa_cs.h | 60 +++--
drivers/net/ethernet/brocade/bna/bfa_ioc.c | 10 +-
drivers/net/ethernet/brocade/bna/bfa_ioc.h | 8 +-
drivers/net/ethernet/brocade/bna/bfa_msgq.h | 8 +-
drivers/net/ethernet/brocade/bna/bna_enet.c | 6 +-
drivers/net/ethernet/brocade/bna/bna_tx_rx.c | 6 +-
drivers/net/ethernet/brocade/bna/bna_types.h | 27 +-
drivers/net/wireless/cisco/airo.c | 204 ++++++++-------
drivers/net/wireless/intel/ipw2x00/ipw2200.c | 2 +-
.../wireless/intersil/hostap/hostap_ioctl.c | 234 ++++++++++--------
drivers/net/wireless/intersil/orinoco/wext.c | 113 +++++----
drivers/net/wireless/zydas/zd1201.c | 162 ++++++------
drivers/staging/ks7010/ks_wlan_net.c | 184 +++++++-------
include/net/cfg80211-wext.h | 20 +-
net/wireless/scan.c | 3 +-
net/wireless/wext-compat.c | 180 ++++++--------
net/wireless/wext-compat.h | 8 +-
net/wireless/wext-sme.c | 5 +-
18 files changed, 661 insertions(+), 579 deletions(-)
--
2.34.1
^ permalink raw reply [flat|nested] 17+ messages in thread
* [PATCH v2 1/6] cfg80211: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
@ 2022-10-27 20:17 ` Gustavo A. R. Silva
2022-10-28 8:22 ` Johannes Berg
2022-10-27 20:18 ` [PATCH v2 2/6] hostap: " Gustavo A. R. Silva
` (4 subsequent siblings)
5 siblings, 1 reply; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:17 UTC (permalink / raw)
To: Stanislav Yakovlev, Johannes Berg, Kalle Valo, David S. Miller,
Eric Dumazet, Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 63 warnings like these:
drivers/net/wireless/intersil/orinoco/wext.c:1379:27: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_param *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
IW_HANDLER(SIOCGIWPOWER, (iw_handler)orinoco_ioctl_getpower),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../net/wireless/wext-compat.c:1607:33: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_point *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
[IW_IOCTL_IDX(SIOCSIWGENIE)] = (iw_handler) cfg80211_wext_siwgenie,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/wireless/intersil/orinoco/wext.c:1390:27: error: incompatible function pointer types initializing 'const iw_handler' (aka 'int (*const)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') with an expression of type 'int (struct net_device *, struct iw_request_info *, struct iw_param *, char *)' [-Wincompatible-function-pointer-types]
IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
^~~~~~~~~~~~~~~~~~~~~~
The cfg80211 Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch. There are no resulting binary differences
before/after changes.
Link: https://github.com/KSPP/linux/issues/234
Link: https://reviews.llvm.org/D134831 [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- Squash previous patches 1, 2 and 3 into a single patch cfg80211.
- Revert changes in orinoco_private_handler[].
- Use IW_HANDLER in cfg80211_handlers instead of open-coded
[IW_IOCTL_IDX(SIOCGIWRETRY)] = cfg80211_wext_giwretry, ...
v1:
- Link: https://lore.kernel.org/linux-hardening/291de76bc7cd5c21dc2f2471382ab0caaf625b22.1666038048.git.gustavoars@kernel.org/
drivers/net/wireless/intel/ipw2x00/ipw2200.c | 2 +-
drivers/net/wireless/intersil/orinoco/wext.c | 113 +++++++-----
include/net/cfg80211-wext.h | 20 +--
net/wireless/scan.c | 3 +-
net/wireless/wext-compat.c | 180 +++++++++----------
net/wireless/wext-compat.h | 8 +-
net/wireless/wext-sme.c | 5 +-
7 files changed, 166 insertions(+), 165 deletions(-)
diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2200.c b/drivers/net/wireless/intel/ipw2x00/ipw2200.c
index 5b483de18c81..3158f91b18d5 100644
--- a/drivers/net/wireless/intel/ipw2x00/ipw2200.c
+++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c
@@ -9870,7 +9870,7 @@ static int ipw_wx_sw_reset(struct net_device *dev,
/* Rebase the WE IOCTLs to zero for the handler array */
static iw_handler ipw_wx_handlers[] = {
- IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname),
+ IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
IW_HANDLER(SIOCSIWFREQ, ipw_wx_set_freq),
IW_HANDLER(SIOCGIWFREQ, ipw_wx_get_freq),
IW_HANDLER(SIOCSIWMODE, ipw_wx_set_mode),
diff --git a/drivers/net/wireless/intersil/orinoco/wext.c b/drivers/net/wireless/intersil/orinoco/wext.c
index 4a01260027bc..d79d72af32a5 100644
--- a/drivers/net/wireless/intersil/orinoco/wext.c
+++ b/drivers/net/wireless/intersil/orinoco/wext.c
@@ -154,9 +154,10 @@ static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev)
static int orinoco_ioctl_setwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct orinoco_private *priv = ndev_priv(dev);
int err = -EINPROGRESS; /* Call commit handler */
unsigned long flags;
@@ -213,9 +214,10 @@ static int orinoco_ioctl_setwap(struct net_device *dev,
static int orinoco_ioctl_getwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct orinoco_private *priv = ndev_priv(dev);
int err = 0;
@@ -234,9 +236,10 @@ static int orinoco_ioctl_getwap(struct net_device *dev,
static int orinoco_ioctl_setiwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq,
+ union iwreq_data *wrqu,
char *keybuf)
{
+ struct iw_point *erq = &wrqu->encoding;
struct orinoco_private *priv = ndev_priv(dev);
int index = (erq->flags & IW_ENCODE_INDEX) - 1;
int setindex = priv->tx_key;
@@ -325,9 +328,10 @@ static int orinoco_ioctl_setiwencode(struct net_device *dev,
static int orinoco_ioctl_getiwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq,
+ union iwreq_data *wrqu,
char *keybuf)
{
+ struct iw_point *erq = &wrqu->encoding;
struct orinoco_private *priv = ndev_priv(dev);
int index = (erq->flags & IW_ENCODE_INDEX) - 1;
unsigned long flags;
@@ -361,9 +365,10 @@ static int orinoco_ioctl_getiwencode(struct net_device *dev,
static int orinoco_ioctl_setessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq,
+ union iwreq_data *wrqu,
char *essidbuf)
{
+ struct iw_point *erq = &wrqu->essid;
struct orinoco_private *priv = ndev_priv(dev);
unsigned long flags;
@@ -392,9 +397,10 @@ static int orinoco_ioctl_setessid(struct net_device *dev,
static int orinoco_ioctl_getessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq,
+ union iwreq_data *wrqu,
char *essidbuf)
{
+ struct iw_point *erq = &wrqu->essid;
struct orinoco_private *priv = ndev_priv(dev);
int active;
int err = 0;
@@ -420,9 +426,10 @@ static int orinoco_ioctl_getessid(struct net_device *dev,
static int orinoco_ioctl_setfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *frq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_freq *frq = &wrqu->freq;
struct orinoco_private *priv = ndev_priv(dev);
int chan = -1;
unsigned long flags;
@@ -469,9 +476,10 @@ static int orinoco_ioctl_setfreq(struct net_device *dev,
static int orinoco_ioctl_getfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *frq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_freq *frq = &wrqu->freq;
struct orinoco_private *priv = ndev_priv(dev);
int tmp;
@@ -488,9 +496,10 @@ static int orinoco_ioctl_getfreq(struct net_device *dev,
static int orinoco_ioctl_getsens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *srq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *srq = &wrqu->sens;
struct orinoco_private *priv = ndev_priv(dev);
struct hermes *hw = &priv->hw;
u16 val;
@@ -517,9 +526,10 @@ static int orinoco_ioctl_getsens(struct net_device *dev,
static int orinoco_ioctl_setsens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *srq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *srq = &wrqu->sens;
struct orinoco_private *priv = ndev_priv(dev);
int val = srq->value;
unsigned long flags;
@@ -540,9 +550,10 @@ static int orinoco_ioctl_setsens(struct net_device *dev,
static int orinoco_ioctl_setrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
struct orinoco_private *priv = ndev_priv(dev);
int ratemode;
int bitrate; /* 100s of kilobits */
@@ -574,9 +585,10 @@ static int orinoco_ioctl_setrate(struct net_device *dev,
static int orinoco_ioctl_getrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
struct orinoco_private *priv = ndev_priv(dev);
int err = 0;
int bitrate, automatic;
@@ -610,9 +622,10 @@ static int orinoco_ioctl_getrate(struct net_device *dev,
static int orinoco_ioctl_setpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *prq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *prq = &wrqu->power;
struct orinoco_private *priv = ndev_priv(dev);
int err = -EINPROGRESS; /* Call commit handler */
unsigned long flags;
@@ -664,9 +677,10 @@ static int orinoco_ioctl_setpower(struct net_device *dev,
static int orinoco_ioctl_getpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *prq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *prq = &wrqu->power;
struct orinoco_private *priv = ndev_priv(dev);
struct hermes *hw = &priv->hw;
int err = 0;
@@ -1097,7 +1111,7 @@ static int orinoco_ioctl_set_mlme(struct net_device *dev,
static int orinoco_ioctl_reset(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1121,7 +1135,7 @@ static int orinoco_ioctl_reset(struct net_device *dev,
static int orinoco_ioctl_setibssport(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
@@ -1143,7 +1157,7 @@ static int orinoco_ioctl_setibssport(struct net_device *dev,
static int orinoco_ioctl_getibssport(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1155,7 +1169,7 @@ static int orinoco_ioctl_getibssport(struct net_device *dev,
static int orinoco_ioctl_setport3(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1201,7 +1215,7 @@ static int orinoco_ioctl_setport3(struct net_device *dev,
static int orinoco_ioctl_getport3(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1213,7 +1227,7 @@ static int orinoco_ioctl_getport3(struct net_device *dev,
static int orinoco_ioctl_setpreamble(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1245,7 +1259,7 @@ static int orinoco_ioctl_setpreamble(struct net_device *dev,
static int orinoco_ioctl_getpreamble(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1265,9 +1279,10 @@ static int orinoco_ioctl_getpreamble(struct net_device *dev,
* For Wireless Tools 25 and 26 append "dummy" are the end. */
static int orinoco_ioctl_getrid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct orinoco_private *priv = ndev_priv(dev);
struct hermes *hw = &priv->hw;
int rid = data->flags;
@@ -1303,7 +1318,7 @@ static int orinoco_ioctl_getrid(struct net_device *dev,
/* Commit handler, called after set operations */
static int orinoco_ioctl_commit(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu,
+ union iwreq_data *wrqu,
char *extra)
{
struct orinoco_private *priv = ndev_priv(dev);
@@ -1347,36 +1362,36 @@ static const struct iw_priv_args orinoco_privtab[] = {
*/
static const iw_handler orinoco_handler[] = {
- IW_HANDLER(SIOCSIWCOMMIT, (iw_handler)orinoco_ioctl_commit),
- IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname),
- IW_HANDLER(SIOCSIWFREQ, (iw_handler)orinoco_ioctl_setfreq),
- IW_HANDLER(SIOCGIWFREQ, (iw_handler)orinoco_ioctl_getfreq),
- IW_HANDLER(SIOCSIWMODE, (iw_handler)cfg80211_wext_siwmode),
- IW_HANDLER(SIOCGIWMODE, (iw_handler)cfg80211_wext_giwmode),
- IW_HANDLER(SIOCSIWSENS, (iw_handler)orinoco_ioctl_setsens),
- IW_HANDLER(SIOCGIWSENS, (iw_handler)orinoco_ioctl_getsens),
- IW_HANDLER(SIOCGIWRANGE, (iw_handler)cfg80211_wext_giwrange),
+ IW_HANDLER(SIOCSIWCOMMIT, orinoco_ioctl_commit),
+ IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
+ IW_HANDLER(SIOCSIWFREQ, orinoco_ioctl_setfreq),
+ IW_HANDLER(SIOCGIWFREQ, orinoco_ioctl_getfreq),
+ IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
+ IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
+ IW_HANDLER(SIOCSIWSENS, orinoco_ioctl_setsens),
+ IW_HANDLER(SIOCGIWSENS, orinoco_ioctl_getsens),
+ IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
- IW_HANDLER(SIOCSIWAP, (iw_handler)orinoco_ioctl_setwap),
- IW_HANDLER(SIOCGIWAP, (iw_handler)orinoco_ioctl_getwap),
- IW_HANDLER(SIOCSIWSCAN, (iw_handler)cfg80211_wext_siwscan),
- IW_HANDLER(SIOCGIWSCAN, (iw_handler)cfg80211_wext_giwscan),
- IW_HANDLER(SIOCSIWESSID, (iw_handler)orinoco_ioctl_setessid),
- IW_HANDLER(SIOCGIWESSID, (iw_handler)orinoco_ioctl_getessid),
- IW_HANDLER(SIOCSIWRATE, (iw_handler)orinoco_ioctl_setrate),
- IW_HANDLER(SIOCGIWRATE, (iw_handler)orinoco_ioctl_getrate),
- IW_HANDLER(SIOCSIWRTS, (iw_handler)cfg80211_wext_siwrts),
- IW_HANDLER(SIOCGIWRTS, (iw_handler)cfg80211_wext_giwrts),
- IW_HANDLER(SIOCSIWFRAG, (iw_handler)cfg80211_wext_siwfrag),
- IW_HANDLER(SIOCGIWFRAG, (iw_handler)cfg80211_wext_giwfrag),
- IW_HANDLER(SIOCGIWRETRY, (iw_handler)cfg80211_wext_giwretry),
- IW_HANDLER(SIOCSIWENCODE, (iw_handler)orinoco_ioctl_setiwencode),
- IW_HANDLER(SIOCGIWENCODE, (iw_handler)orinoco_ioctl_getiwencode),
- IW_HANDLER(SIOCSIWPOWER, (iw_handler)orinoco_ioctl_setpower),
- IW_HANDLER(SIOCGIWPOWER, (iw_handler)orinoco_ioctl_getpower),
+ IW_HANDLER(SIOCSIWAP, orinoco_ioctl_setwap),
+ IW_HANDLER(SIOCGIWAP, orinoco_ioctl_getwap),
+ IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
+ IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
+ IW_HANDLER(SIOCSIWESSID, orinoco_ioctl_setessid),
+ IW_HANDLER(SIOCGIWESSID, orinoco_ioctl_getessid),
+ IW_HANDLER(SIOCSIWRATE, orinoco_ioctl_setrate),
+ IW_HANDLER(SIOCGIWRATE, orinoco_ioctl_getrate),
+ IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
+ IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
+ IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
+ IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
+ IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
+ IW_HANDLER(SIOCSIWENCODE, orinoco_ioctl_setiwencode),
+ IW_HANDLER(SIOCGIWENCODE, orinoco_ioctl_getiwencode),
+ IW_HANDLER(SIOCSIWPOWER, orinoco_ioctl_setpower),
+ IW_HANDLER(SIOCGIWPOWER, orinoco_ioctl_getpower),
IW_HANDLER(SIOCSIWGENIE, orinoco_ioctl_set_genie),
IW_HANDLER(SIOCGIWGENIE, orinoco_ioctl_get_genie),
IW_HANDLER(SIOCSIWMLME, orinoco_ioctl_set_mlme),
diff --git a/include/net/cfg80211-wext.h b/include/net/cfg80211-wext.h
index ad77caf2ffde..0ee36d97e068 100644
--- a/include/net/cfg80211-wext.h
+++ b/include/net/cfg80211-wext.h
@@ -19,34 +19,34 @@
*/
int cfg80211_wext_giwname(struct net_device *dev,
struct iw_request_info *info,
- char *name, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
- u32 *mode, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
- u32 *mode, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_siwscan(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwscan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwrange(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_siwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_siwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *frag, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *frag, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_giwretry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *retry, char *extra);
+ union iwreq_data *wrqu, char *extra);
#endif /* __NET_CFG80211_WEXT_H */
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 806a5f1330ff..853619bc0f1a 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -3229,8 +3229,9 @@ static int ieee80211_scan_results(struct cfg80211_registered_device *rdev,
int cfg80211_wext_giwscan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct cfg80211_registered_device *rdev;
int res;
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index ddf340bfa07a..8a24dfca75af 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -25,16 +25,17 @@
int cfg80211_wext_giwname(struct net_device *dev,
struct iw_request_info *info,
- char *name, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
- strcpy(name, "IEEE 802.11");
+ strcpy(wrqu->name, "IEEE 802.11");
return 0;
}
EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
- u32 *mode, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev;
struct vif_params vifparams;
@@ -71,8 +72,9 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
- u32 *mode, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (!wdev)
@@ -108,8 +110,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
int cfg80211_wext_giwrange(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct iw_range *range = (struct iw_range *) extra;
enum nl80211_band band;
@@ -251,8 +254,9 @@ int cfg80211_wext_freq(struct iw_freq *freq)
int cfg80211_wext_siwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
u32 orts = wdev->wiphy->rts_threshold;
@@ -281,8 +285,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
int cfg80211_wext_giwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct wireless_dev *wdev = dev->ieee80211_ptr;
rts->value = wdev->wiphy->rts_threshold;
@@ -295,8 +300,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
int cfg80211_wext_siwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *frag, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *frag = &wrqu->frag;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
u32 ofrag = wdev->wiphy->frag_threshold;
@@ -325,8 +331,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
int cfg80211_wext_giwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *frag, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *frag = &wrqu->frag;
struct wireless_dev *wdev = dev->ieee80211_ptr;
frag->value = wdev->wiphy->frag_threshold;
@@ -339,8 +346,9 @@ EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
static int cfg80211_wext_siwretry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *retry, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *retry = &wrqu->retry;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
u32 changed = 0;
@@ -378,8 +386,9 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
int cfg80211_wext_giwretry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *retry, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *retry = &wrqu->retry;
struct wireless_dev *wdev = dev->ieee80211_ptr;
retry->disabled = 0;
@@ -588,8 +597,9 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
static int cfg80211_wext_siwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *keybuf)
+ union iwreq_data *wrqu, char *keybuf)
{
+ struct iw_point *erq = &wrqu->encoding;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int idx, err;
@@ -664,8 +674,9 @@ static int cfg80211_wext_siwencode(struct net_device *dev,
static int cfg80211_wext_siwencodeext(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *erq = &wrqu->encoding;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
@@ -767,8 +778,9 @@ static int cfg80211_wext_siwencodeext(struct net_device *dev,
static int cfg80211_wext_giwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *keybuf)
+ union iwreq_data *wrqu, char *keybuf)
{
+ struct iw_point *erq = &wrqu->encoding;
struct wireless_dev *wdev = dev->ieee80211_ptr;
int idx;
@@ -804,8 +816,9 @@ static int cfg80211_wext_giwencode(struct net_device *dev,
static int cfg80211_wext_siwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *wextfreq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *wextfreq = &wrqu->freq;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_chan_def chandef = {
@@ -870,8 +883,9 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
static int cfg80211_wext_giwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *freq = &wrqu->freq;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_chan_def chandef = {};
@@ -1147,8 +1161,9 @@ static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
static int cfg80211_wext_siwauth(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *data = &wrqu->param;
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (wdev->iftype != NL80211_IFTYPE_STATION)
@@ -1180,7 +1195,7 @@ static int cfg80211_wext_siwauth(struct net_device *dev,
static int cfg80211_wext_giwauth(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
/* XXX: what do we need? */
@@ -1189,8 +1204,9 @@ static int cfg80211_wext_giwauth(struct net_device *dev,
static int cfg80211_wext_siwpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *wrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *wrq = &wrqu->power;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
bool ps;
@@ -1238,8 +1254,9 @@ static int cfg80211_wext_siwpower(struct net_device *dev,
static int cfg80211_wext_giwpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *wrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *wrq = &wrqu->power;
struct wireless_dev *wdev = dev->ieee80211_ptr;
wrq->disabled = !wdev->ps;
@@ -1249,8 +1266,9 @@ static int cfg80211_wext_giwpower(struct net_device *dev,
static int cfg80211_wext_siwrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rate, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rate = &wrqu->bitrate;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_bitrate_mask mask;
@@ -1307,8 +1325,9 @@ static int cfg80211_wext_siwrate(struct net_device *dev,
static int cfg80211_wext_giwrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rate, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rate = &wrqu->bitrate;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct station_info sinfo = {};
@@ -1430,8 +1449,9 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
static int cfg80211_wext_siwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
@@ -1455,8 +1475,9 @@ static int cfg80211_wext_siwap(struct net_device *dev,
static int cfg80211_wext_giwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
@@ -1480,8 +1501,9 @@ static int cfg80211_wext_giwap(struct net_device *dev,
static int cfg80211_wext_siwessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *ssid)
+ union iwreq_data *wrqu, char *ssid)
{
+ struct iw_point *data = &wrqu->data;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
@@ -1505,8 +1527,9 @@ static int cfg80211_wext_siwessid(struct net_device *dev,
static int cfg80211_wext_giwessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *ssid)
+ union iwreq_data *wrqu, char *ssid)
{
+ struct iw_point *data = &wrqu->data;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
@@ -1533,7 +1556,7 @@ static int cfg80211_wext_giwessid(struct net_device *dev,
static int cfg80211_wext_siwpmksa(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
@@ -1584,78 +1607,39 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev,
return ret;
}
-#define DEFINE_WEXT_COMPAT_STUB(func, type) \
- static int __ ## func(struct net_device *dev, \
- struct iw_request_info *info, \
- union iwreq_data *wrqu, \
- char *extra) \
- { \
- return func(dev, info, (type *)wrqu, extra); \
- }
-
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point)
-DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point)
-
static const iw_handler cfg80211_handlers[] = {
- [IW_IOCTL_IDX(SIOCGIWNAME)] = __cfg80211_wext_giwname,
- [IW_IOCTL_IDX(SIOCSIWFREQ)] = __cfg80211_wext_siwfreq,
- [IW_IOCTL_IDX(SIOCGIWFREQ)] = __cfg80211_wext_giwfreq,
- [IW_IOCTL_IDX(SIOCSIWMODE)] = __cfg80211_wext_siwmode,
- [IW_IOCTL_IDX(SIOCGIWMODE)] = __cfg80211_wext_giwmode,
- [IW_IOCTL_IDX(SIOCGIWRANGE)] = __cfg80211_wext_giwrange,
- [IW_IOCTL_IDX(SIOCSIWAP)] = __cfg80211_wext_siwap,
- [IW_IOCTL_IDX(SIOCGIWAP)] = __cfg80211_wext_giwap,
- [IW_IOCTL_IDX(SIOCSIWMLME)] = __cfg80211_wext_siwmlme,
- [IW_IOCTL_IDX(SIOCSIWSCAN)] = cfg80211_wext_siwscan,
- [IW_IOCTL_IDX(SIOCGIWSCAN)] = __cfg80211_wext_giwscan,
- [IW_IOCTL_IDX(SIOCSIWESSID)] = __cfg80211_wext_siwessid,
- [IW_IOCTL_IDX(SIOCGIWESSID)] = __cfg80211_wext_giwessid,
- [IW_IOCTL_IDX(SIOCSIWRATE)] = __cfg80211_wext_siwrate,
- [IW_IOCTL_IDX(SIOCGIWRATE)] = __cfg80211_wext_giwrate,
- [IW_IOCTL_IDX(SIOCSIWRTS)] = __cfg80211_wext_siwrts,
- [IW_IOCTL_IDX(SIOCGIWRTS)] = __cfg80211_wext_giwrts,
- [IW_IOCTL_IDX(SIOCSIWFRAG)] = __cfg80211_wext_siwfrag,
- [IW_IOCTL_IDX(SIOCGIWFRAG)] = __cfg80211_wext_giwfrag,
- [IW_IOCTL_IDX(SIOCSIWTXPOW)] = cfg80211_wext_siwtxpower,
- [IW_IOCTL_IDX(SIOCGIWTXPOW)] = cfg80211_wext_giwtxpower,
- [IW_IOCTL_IDX(SIOCSIWRETRY)] = __cfg80211_wext_siwretry,
- [IW_IOCTL_IDX(SIOCGIWRETRY)] = __cfg80211_wext_giwretry,
- [IW_IOCTL_IDX(SIOCSIWENCODE)] = __cfg80211_wext_siwencode,
- [IW_IOCTL_IDX(SIOCGIWENCODE)] = __cfg80211_wext_giwencode,
- [IW_IOCTL_IDX(SIOCSIWPOWER)] = __cfg80211_wext_siwpower,
- [IW_IOCTL_IDX(SIOCGIWPOWER)] = __cfg80211_wext_giwpower,
- [IW_IOCTL_IDX(SIOCSIWGENIE)] = __cfg80211_wext_siwgenie,
- [IW_IOCTL_IDX(SIOCSIWAUTH)] = __cfg80211_wext_siwauth,
- [IW_IOCTL_IDX(SIOCGIWAUTH)] = __cfg80211_wext_giwauth,
- [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext,
- [IW_IOCTL_IDX(SIOCSIWPMKSA)] = __cfg80211_wext_siwpmksa,
+ IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
+ IW_HANDLER(SIOCSIWFREQ, cfg80211_wext_siwfreq),
+ IW_HANDLER(SIOCGIWFREQ, cfg80211_wext_giwfreq),
+ IW_HANDLER(SIOCSIWMODE, cfg80211_wext_siwmode),
+ IW_HANDLER(SIOCGIWMODE, cfg80211_wext_giwmode),
+ IW_HANDLER(SIOCGIWRANGE, cfg80211_wext_giwrange),
+ IW_HANDLER(SIOCSIWAP, cfg80211_wext_siwap),
+ IW_HANDLER(SIOCGIWAP, cfg80211_wext_giwap),
+ IW_HANDLER(SIOCSIWMLME, cfg80211_wext_siwmlme),
+ IW_HANDLER(SIOCSIWSCAN, cfg80211_wext_siwscan),
+ IW_HANDLER(SIOCGIWSCAN, cfg80211_wext_giwscan),
+ IW_HANDLER(SIOCSIWESSID, cfg80211_wext_siwessid),
+ IW_HANDLER(SIOCGIWESSID, cfg80211_wext_giwessid),
+ IW_HANDLER(SIOCSIWRATE, cfg80211_wext_siwrate),
+ IW_HANDLER(SIOCGIWRATE, cfg80211_wext_giwrate),
+ IW_HANDLER(SIOCSIWRTS, cfg80211_wext_siwrts),
+ IW_HANDLER(SIOCGIWRTS, cfg80211_wext_giwrts),
+ IW_HANDLER(SIOCSIWFRAG, cfg80211_wext_siwfrag),
+ IW_HANDLER(SIOCGIWFRAG, cfg80211_wext_giwfrag),
+ IW_HANDLER(SIOCSIWTXPOW, cfg80211_wext_siwtxpower),
+ IW_HANDLER(SIOCGIWTXPOW, cfg80211_wext_giwtxpower),
+ IW_HANDLER(SIOCSIWRETRY, cfg80211_wext_siwretry),
+ IW_HANDLER(SIOCGIWRETRY, cfg80211_wext_giwretry),
+ IW_HANDLER(SIOCSIWENCODE, cfg80211_wext_siwencode),
+ IW_HANDLER(SIOCGIWENCODE, cfg80211_wext_giwencode),
+ IW_HANDLER(SIOCSIWPOWER, cfg80211_wext_siwpower),
+ IW_HANDLER(SIOCGIWPOWER, cfg80211_wext_giwpower),
+ IW_HANDLER(SIOCSIWGENIE, cfg80211_wext_siwgenie),
+ IW_HANDLER(SIOCSIWAUTH, cfg80211_wext_siwauth),
+ IW_HANDLER(SIOCGIWAUTH, cfg80211_wext_giwauth),
+ IW_HANDLER(SIOCSIWENCODEEXT, cfg80211_wext_siwencodeext),
+ IW_HANDLER(SIOCSIWPMKSA, cfg80211_wext_siwpmksa),
};
const struct iw_handler_def cfg80211_wext_handler = {
diff --git a/net/wireless/wext-compat.h b/net/wireless/wext-compat.h
index 8d3cc1552e2f..c02eb789e676 100644
--- a/net/wireless/wext-compat.h
+++ b/net/wireless/wext-compat.h
@@ -13,7 +13,7 @@
int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *freq, char *extra);
+ struct iw_freq *wextfreq, char *extra);
int cfg80211_ibss_wext_giwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra);
@@ -32,7 +32,7 @@ int cfg80211_ibss_wext_giwessid(struct net_device *dev,
int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *freq, char *extra);
+ struct iw_freq *wextfreq, char *extra);
int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
struct iw_request_info *info,
struct iw_freq *freq, char *extra);
@@ -51,10 +51,10 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
int cfg80211_wext_siwmlme(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_siwgenie(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra);
+ union iwreq_data *wrqu, char *extra);
int cfg80211_wext_freq(struct iw_freq *freq);
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index 68f45afc352d..191c6d98c700 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -324,8 +324,9 @@ int cfg80211_mgd_wext_giwap(struct net_device *dev,
int cfg80211_wext_siwgenie(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
u8 *ie = extra;
@@ -374,7 +375,7 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
int cfg80211_wext_siwmlme(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct iw_mlme *mlme = (struct iw_mlme *)extra;
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [PATCH v2 2/6] hostap: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
2022-10-27 20:17 ` [PATCH v2 1/6] cfg80211: " Gustavo A. R. Silva
@ 2022-10-27 20:18 ` Gustavo A. R. Silva
2022-10-29 7:26 ` Kees Cook
2022-11-01 9:36 ` Kalle Valo
2022-10-27 20:19 ` [PATCH v2 3/6] zd1201: " Gustavo A. R. Silva
` (3 subsequent siblings)
5 siblings, 2 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:18 UTC (permalink / raw)
To: Jouni Malinen, Kalle Valo, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 42 warnings like these:
../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
(iw_handler) prism2_get_name, /* SIOCGIWNAME */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
The hostap Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch. There are no resulting binary differences
before/after changes.
Link: https://github.com/KSPP/linux/issues/235
Link: https://reviews.llvm.org/D134831 [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- Revert changes in prism2_private_handler[].
v1:
- Link: https://lore.kernel.org/linux-hardening/099d191c65efdf2f5f7b40a87a7eb3aabcae3e04.1666038048.git.gustavoars@kernel.org/
.../wireless/intersil/hostap/hostap_ioctl.c | 234 ++++++++++--------
1 file changed, 128 insertions(+), 106 deletions(-)
diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
index 4e0a0c881697..01d1ba815c74 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
@@ -91,7 +91,7 @@ static int prism2_get_datarates(struct net_device *dev, u8 *rates)
static int prism2_get_name(struct net_device *dev,
struct iw_request_info *info,
- char *name, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
u8 rates[10];
int len, i, over2 = 0;
@@ -105,7 +105,7 @@ static int prism2_get_name(struct net_device *dev,
}
}
- strcpy(name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS");
+ strcpy(wrqu->name, over2 ? "IEEE 802.11b" : "IEEE 802.11-DS");
return 0;
}
@@ -113,8 +113,9 @@ static int prism2_get_name(struct net_device *dev,
static int prism2_ioctl_siwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *keybuf)
+ union iwreq_data *wrqu, char *keybuf)
{
+ struct iw_point *erq = &wrqu->encoding;
struct hostap_interface *iface;
local_info_t *local;
int i;
@@ -215,8 +216,9 @@ static int prism2_ioctl_siwencode(struct net_device *dev,
static int prism2_ioctl_giwencode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *key)
+ union iwreq_data *wrqu, char *key)
{
+ struct iw_point *erq = &wrqu->encoding;
struct hostap_interface *iface;
local_info_t *local;
int i, len;
@@ -321,8 +323,9 @@ static int hostap_set_rate(struct net_device *dev)
static int prism2_ioctl_siwrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
struct hostap_interface *iface;
local_info_t *local;
@@ -381,8 +384,9 @@ static int prism2_ioctl_siwrate(struct net_device *dev,
static int prism2_ioctl_giwrate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
u16 val;
struct hostap_interface *iface;
local_info_t *local;
@@ -440,8 +444,9 @@ static int prism2_ioctl_giwrate(struct net_device *dev,
static int prism2_ioctl_siwsens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *sens, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *sens = &wrqu->sens;
struct hostap_interface *iface;
local_info_t *local;
@@ -461,8 +466,9 @@ static int prism2_ioctl_siwsens(struct net_device *dev,
static int prism2_ioctl_giwsens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *sens, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *sens = &wrqu->sens;
struct hostap_interface *iface;
local_info_t *local;
__le16 val;
@@ -485,8 +491,9 @@ static int prism2_ioctl_giwsens(struct net_device *dev,
/* Deprecated in new wireless extension API */
static int prism2_ioctl_giwaplist(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
struct sockaddr *addr;
@@ -526,8 +533,9 @@ static int prism2_ioctl_giwaplist(struct net_device *dev,
static int prism2_ioctl_siwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct hostap_interface *iface;
local_info_t *local;
__le16 val;
@@ -553,8 +561,9 @@ static int prism2_ioctl_siwrts(struct net_device *dev,
static int prism2_ioctl_giwrts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct hostap_interface *iface;
local_info_t *local;
__le16 val;
@@ -576,8 +585,9 @@ static int prism2_ioctl_giwrts(struct net_device *dev,
static int prism2_ioctl_siwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct hostap_interface *iface;
local_info_t *local;
__le16 val;
@@ -603,8 +613,9 @@ static int prism2_ioctl_siwfrag(struct net_device *dev,
static int prism2_ioctl_giwfrag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct hostap_interface *iface;
local_info_t *local;
__le16 val;
@@ -669,8 +680,9 @@ static int hostap_join_ap(struct net_device *dev)
static int prism2_ioctl_siwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
#ifdef PRISM2_NO_STATION_MODES
return -EOPNOTSUPP;
#else /* PRISM2_NO_STATION_MODES */
@@ -709,8 +721,9 @@ static int prism2_ioctl_siwap(struct net_device *dev,
static int prism2_ioctl_giwap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct hostap_interface *iface;
local_info_t *local;
@@ -745,8 +758,9 @@ static int prism2_ioctl_giwap(struct net_device *dev,
static int prism2_ioctl_siwnickn(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *nickname)
+ union iwreq_data *wrqu, char *nickname)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
@@ -766,8 +780,9 @@ static int prism2_ioctl_siwnickn(struct net_device *dev,
static int prism2_ioctl_giwnickn(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *nickname)
+ union iwreq_data *wrqu, char *nickname)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
int len;
@@ -793,8 +808,9 @@ static int prism2_ioctl_giwnickn(struct net_device *dev,
static int prism2_ioctl_siwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *freq = &wrqu->freq;
struct hostap_interface *iface;
local_info_t *local;
@@ -830,8 +846,9 @@ static int prism2_ioctl_siwfreq(struct net_device *dev,
static int prism2_ioctl_giwfreq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *freq = &wrqu->freq;
struct hostap_interface *iface;
local_info_t *local;
u16 val;
@@ -874,8 +891,9 @@ static void hostap_monitor_set_type(local_info_t *local)
static int prism2_ioctl_siwessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *ssid)
+ union iwreq_data *wrqu, char *ssid)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
@@ -910,8 +928,9 @@ static int prism2_ioctl_siwessid(struct net_device *dev,
static int prism2_ioctl_giwessid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *essid)
+ union iwreq_data *wrqu, char *essid)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
u16 val;
@@ -946,8 +965,9 @@ static int prism2_ioctl_giwessid(struct net_device *dev,
static int prism2_ioctl_giwrange(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
struct iw_range *range = (struct iw_range *) extra;
@@ -1121,8 +1141,9 @@ static int hostap_monitor_mode_disable(local_info_t *local)
static int prism2_ioctl_siwmode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *mode, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct hostap_interface *iface;
local_info_t *local;
int double_reset = 0;
@@ -1197,8 +1218,9 @@ static int prism2_ioctl_siwmode(struct net_device *dev,
static int prism2_ioctl_giwmode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *mode, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct hostap_interface *iface;
local_info_t *local;
@@ -1222,8 +1244,9 @@ static int prism2_ioctl_giwmode(struct net_device *dev,
static int prism2_ioctl_siwpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *wrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *wrq = &wrqu->power;
#ifdef PRISM2_NO_STATION_MODES
return -EOPNOTSUPP;
#else /* PRISM2_NO_STATION_MODES */
@@ -1281,8 +1304,9 @@ static int prism2_ioctl_siwpower(struct net_device *dev,
static int prism2_ioctl_giwpower(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->power;
#ifdef PRISM2_NO_STATION_MODES
return -EOPNOTSUPP;
#else /* PRISM2_NO_STATION_MODES */
@@ -1339,8 +1363,9 @@ static int prism2_ioctl_giwpower(struct net_device *dev,
static int prism2_ioctl_siwretry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->retry;
struct hostap_interface *iface;
local_info_t *local;
@@ -1400,8 +1425,9 @@ static int prism2_ioctl_siwretry(struct net_device *dev,
static int prism2_ioctl_giwretry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->retry;
struct hostap_interface *iface;
local_info_t *local;
__le16 shortretry, longretry, lifetime, altretry;
@@ -1494,8 +1520,9 @@ static u16 prism2_txpower_dBm_to_hfa386x(int val)
static int prism2_ioctl_siwtxpow(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->txpower;
struct hostap_interface *iface;
local_info_t *local;
#ifdef RAW_TXPOWER_SETTING
@@ -1575,9 +1602,10 @@ static int prism2_ioctl_siwtxpow(struct net_device *dev,
static int prism2_ioctl_giwtxpow(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *rrq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
#ifdef RAW_TXPOWER_SETTING
+ struct iw_param *rrq = &wrqu->txpower;
struct hostap_interface *iface;
local_info_t *local;
u16 resp0;
@@ -1710,8 +1738,9 @@ static inline int prism2_request_scan(struct net_device *dev)
static int prism2_ioctl_siwscan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
int ret;
@@ -2057,8 +2086,9 @@ static inline int prism2_ioctl_giwscan_sta(struct net_device *dev,
static int prism2_ioctl_giwscan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface;
local_info_t *local;
int res;
@@ -2303,7 +2333,7 @@ static int prism2_ioctl_priv_inquire(struct net_device *dev, int *i)
static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
struct hostap_interface *iface;
local_info_t *local;
@@ -2654,7 +2684,7 @@ static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct hostap_interface *iface;
local_info_t *local;
@@ -2841,7 +2871,7 @@ static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
static int prism2_ioctl_priv_readmif(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct hostap_interface *iface;
local_info_t *local;
@@ -2862,7 +2892,7 @@ static int prism2_ioctl_priv_readmif(struct net_device *dev,
static int prism2_ioctl_priv_writemif(struct net_device *dev,
struct iw_request_info *info,
- void *wrqu, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct hostap_interface *iface;
local_info_t *local;
@@ -2885,7 +2915,7 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
struct hostap_interface *iface;
local_info_t *local;
int ret = 0;
- u32 mode;
+ union iwreq_data wrqu;
iface = netdev_priv(dev);
local = iface->local;
@@ -2899,8 +2929,8 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
if (*i == 0) {
/* Disable monitor mode - old mode was not saved, so go to
* Master mode */
- mode = IW_MODE_MASTER;
- ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL);
+ wrqu.mode = IW_MODE_MASTER;
+ ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL);
} else if (*i == 1) {
/* netlink socket mode is not supported anymore since it did
* not separate different devices from each other and was not
@@ -2916,8 +2946,8 @@ static int prism2_ioctl_priv_monitor(struct net_device *dev, int *i)
local->monitor_type = PRISM2_MONITOR_PRISM;
break;
}
- mode = IW_MODE_MONITOR;
- ret = prism2_ioctl_siwmode(dev, NULL, &mode, NULL);
+ wrqu.mode = IW_MODE_MONITOR;
+ ret = prism2_ioctl_siwmode(dev, NULL, &wrqu, NULL);
hostap_monitor_mode_enable(local);
} else
ret = -EINVAL;
@@ -3079,8 +3109,9 @@ static int prism2_set_genericelement(struct net_device *dev, u8 *elem,
static int prism2_ioctl_siwauth(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *data = &wrqu->param;
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
@@ -3145,8 +3176,9 @@ static int prism2_ioctl_siwauth(struct net_device *dev,
static int prism2_ioctl_giwauth(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *data = &wrqu->param;
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
@@ -3184,8 +3216,9 @@ static int prism2_ioctl_giwauth(struct net_device *dev,
static int prism2_ioctl_siwencodeext(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *erq = &wrqu->encoding;
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
@@ -3358,8 +3391,9 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev,
static int prism2_ioctl_giwencodeext(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *erq, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *erq = &wrqu->encoding;
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
struct lib80211_crypt_data **crypt;
@@ -3666,16 +3700,18 @@ static int prism2_ioctl_set_assoc_ap_addr(local_info_t *local,
static int prism2_ioctl_siwgenie(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
return prism2_set_genericelement(dev, extra, data->length);
}
static int prism2_ioctl_giwgenie(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *data = &wrqu->data;
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
int len = local->generic_elem_len - 2;
@@ -3713,7 +3749,7 @@ static int prism2_ioctl_set_generic_element(local_info_t *local,
static int prism2_ioctl_siwmlme(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *data, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
struct hostap_interface *iface = netdev_priv(dev);
local_info_t *local = iface->local;
@@ -3864,62 +3900,48 @@ const struct ethtool_ops prism2_ethtool_ops = {
static const iw_handler prism2_handler[] =
{
- (iw_handler) NULL, /* SIOCSIWCOMMIT */
- (iw_handler) prism2_get_name, /* SIOCGIWNAME */
- (iw_handler) NULL, /* SIOCSIWNWID */
- (iw_handler) NULL, /* SIOCGIWNWID */
- (iw_handler) prism2_ioctl_siwfreq, /* SIOCSIWFREQ */
- (iw_handler) prism2_ioctl_giwfreq, /* SIOCGIWFREQ */
- (iw_handler) prism2_ioctl_siwmode, /* SIOCSIWMODE */
- (iw_handler) prism2_ioctl_giwmode, /* SIOCGIWMODE */
- (iw_handler) prism2_ioctl_siwsens, /* SIOCSIWSENS */
- (iw_handler) prism2_ioctl_giwsens, /* SIOCGIWSENS */
- (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
- (iw_handler) prism2_ioctl_giwrange, /* SIOCGIWRANGE */
- (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
- (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
- iw_handler_set_spy, /* SIOCSIWSPY */
- iw_handler_get_spy, /* SIOCGIWSPY */
- iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
- iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
- (iw_handler) prism2_ioctl_siwap, /* SIOCSIWAP */
- (iw_handler) prism2_ioctl_giwap, /* SIOCGIWAP */
- (iw_handler) prism2_ioctl_siwmlme, /* SIOCSIWMLME */
- (iw_handler) prism2_ioctl_giwaplist, /* SIOCGIWAPLIST */
- (iw_handler) prism2_ioctl_siwscan, /* SIOCSIWSCAN */
- (iw_handler) prism2_ioctl_giwscan, /* SIOCGIWSCAN */
- (iw_handler) prism2_ioctl_siwessid, /* SIOCSIWESSID */
- (iw_handler) prism2_ioctl_giwessid, /* SIOCGIWESSID */
- (iw_handler) prism2_ioctl_siwnickn, /* SIOCSIWNICKN */
- (iw_handler) prism2_ioctl_giwnickn, /* SIOCGIWNICKN */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) prism2_ioctl_siwrate, /* SIOCSIWRATE */
- (iw_handler) prism2_ioctl_giwrate, /* SIOCGIWRATE */
- (iw_handler) prism2_ioctl_siwrts, /* SIOCSIWRTS */
- (iw_handler) prism2_ioctl_giwrts, /* SIOCGIWRTS */
- (iw_handler) prism2_ioctl_siwfrag, /* SIOCSIWFRAG */
- (iw_handler) prism2_ioctl_giwfrag, /* SIOCGIWFRAG */
- (iw_handler) prism2_ioctl_siwtxpow, /* SIOCSIWTXPOW */
- (iw_handler) prism2_ioctl_giwtxpow, /* SIOCGIWTXPOW */
- (iw_handler) prism2_ioctl_siwretry, /* SIOCSIWRETRY */
- (iw_handler) prism2_ioctl_giwretry, /* SIOCGIWRETRY */
- (iw_handler) prism2_ioctl_siwencode, /* SIOCSIWENCODE */
- (iw_handler) prism2_ioctl_giwencode, /* SIOCGIWENCODE */
- (iw_handler) prism2_ioctl_siwpower, /* SIOCSIWPOWER */
- (iw_handler) prism2_ioctl_giwpower, /* SIOCGIWPOWER */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) prism2_ioctl_siwgenie, /* SIOCSIWGENIE */
- (iw_handler) prism2_ioctl_giwgenie, /* SIOCGIWGENIE */
- (iw_handler) prism2_ioctl_siwauth, /* SIOCSIWAUTH */
- (iw_handler) prism2_ioctl_giwauth, /* SIOCGIWAUTH */
- (iw_handler) prism2_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
- (iw_handler) prism2_ioctl_giwencodeext, /* SIOCGIWENCODEEXT */
- (iw_handler) NULL, /* SIOCSIWPMKSA */
- (iw_handler) NULL, /* -- hole -- */
+ IW_HANDLER(SIOCGIWNAME, prism2_get_name),
+ IW_HANDLER(SIOCSIWFREQ, prism2_ioctl_siwfreq),
+ IW_HANDLER(SIOCGIWFREQ, prism2_ioctl_giwfreq),
+ IW_HANDLER(SIOCSIWMODE, prism2_ioctl_siwmode),
+ IW_HANDLER(SIOCGIWMODE, prism2_ioctl_giwmode),
+ IW_HANDLER(SIOCSIWSENS, prism2_ioctl_siwsens),
+ IW_HANDLER(SIOCGIWSENS, prism2_ioctl_giwsens),
+ IW_HANDLER(SIOCGIWRANGE, prism2_ioctl_giwrange),
+ IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
+ IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
+ IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
+ IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
+ IW_HANDLER(SIOCSIWAP, prism2_ioctl_siwap),
+ IW_HANDLER(SIOCGIWAP, prism2_ioctl_giwap),
+ IW_HANDLER(SIOCSIWMLME, prism2_ioctl_siwmlme),
+ IW_HANDLER(SIOCGIWAPLIST, prism2_ioctl_giwaplist),
+ IW_HANDLER(SIOCSIWSCAN, prism2_ioctl_siwscan),
+ IW_HANDLER(SIOCGIWSCAN, prism2_ioctl_giwscan),
+ IW_HANDLER(SIOCSIWESSID, prism2_ioctl_siwessid),
+ IW_HANDLER(SIOCGIWESSID, prism2_ioctl_giwessid),
+ IW_HANDLER(SIOCSIWNICKN, prism2_ioctl_siwnickn),
+ IW_HANDLER(SIOCGIWNICKN, prism2_ioctl_giwnickn),
+ IW_HANDLER(SIOCSIWRATE, prism2_ioctl_siwrate),
+ IW_HANDLER(SIOCGIWRATE, prism2_ioctl_giwrate),
+ IW_HANDLER(SIOCSIWRTS, prism2_ioctl_siwrts),
+ IW_HANDLER(SIOCGIWRTS, prism2_ioctl_giwrts),
+ IW_HANDLER(SIOCSIWFRAG, prism2_ioctl_siwfrag),
+ IW_HANDLER(SIOCGIWFRAG, prism2_ioctl_giwfrag),
+ IW_HANDLER(SIOCSIWTXPOW, prism2_ioctl_siwtxpow),
+ IW_HANDLER(SIOCGIWTXPOW, prism2_ioctl_giwtxpow),
+ IW_HANDLER(SIOCSIWRETRY, prism2_ioctl_siwretry),
+ IW_HANDLER(SIOCGIWRETRY, prism2_ioctl_giwretry),
+ IW_HANDLER(SIOCSIWENCODE, prism2_ioctl_siwencode),
+ IW_HANDLER(SIOCGIWENCODE, prism2_ioctl_giwencode),
+ IW_HANDLER(SIOCSIWPOWER, prism2_ioctl_siwpower),
+ IW_HANDLER(SIOCGIWPOWER, prism2_ioctl_giwpower),
+ IW_HANDLER(SIOCSIWGENIE, prism2_ioctl_siwgenie),
+ IW_HANDLER(SIOCGIWGENIE, prism2_ioctl_giwgenie),
+ IW_HANDLER(SIOCSIWAUTH, prism2_ioctl_siwauth),
+ IW_HANDLER(SIOCGIWAUTH, prism2_ioctl_giwauth),
+ IW_HANDLER(SIOCSIWENCODEEXT, prism2_ioctl_siwencodeext),
+ IW_HANDLER(SIOCGIWENCODEEXT, prism2_ioctl_giwencodeext),
};
static const iw_handler prism2_private_handler[] =
@@ -3935,8 +3957,8 @@ const struct iw_handler_def hostap_iw_handler_def =
.num_standard = ARRAY_SIZE(prism2_handler),
.num_private = ARRAY_SIZE(prism2_private_handler),
.num_private_args = ARRAY_SIZE(prism2_priv),
- .standard = (iw_handler *) prism2_handler,
- .private = (iw_handler *) prism2_private_handler,
+ .standard = prism2_handler,
+ .private = prism2_private_handler,
.private_args = (struct iw_priv_args *) prism2_priv,
.get_wireless_stats = hostap_get_wireless_stats,
};
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [PATCH v2 3/6] zd1201: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
2022-10-27 20:17 ` [PATCH v2 1/6] cfg80211: " Gustavo A. R. Silva
2022-10-27 20:18 ` [PATCH v2 2/6] hostap: " Gustavo A. R. Silva
@ 2022-10-27 20:19 ` Gustavo A. R. Silva
2022-10-29 7:08 ` Kees Cook
2022-10-27 20:20 ` [PATCH v2 4/6] airo: " Gustavo A. R. Silva
` (2 subsequent siblings)
5 siblings, 1 reply; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:19 UTC (permalink / raw)
To: Kalle Valo, David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 30 warnings like these:
../drivers/net/wireless/zydas/zd1201.c:1560:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_freq *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
(iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
The zd1201 Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch.There are no resulting binary differences
before/after changes.
Link: https://github.com/KSPP/linux/issues/233
Link: https://reviews.llvm.org/D134831 [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- Revert changes in zd1201_private_handler[].
v1:
- Link: https://lore.kernel.org/linux-hardening/b16526a7a35638224990d265db21c8b450b67545.1666038048.git.gustavoars@kernel.org/
drivers/net/wireless/zydas/zd1201.c | 162 ++++++++++++++--------------
1 file changed, 83 insertions(+), 79 deletions(-)
diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c
index 82bc0d44212e..f761ebe7acfc 100644
--- a/drivers/net/wireless/zydas/zd1201.c
+++ b/drivers/net/wireless/zydas/zd1201.c
@@ -886,7 +886,7 @@ static void zd1201_set_multicast(struct net_device *dev)
}
static int zd1201_config_commit(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *data, char *essid)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
struct zd1201 *zd = netdev_priv(dev);
@@ -894,15 +894,16 @@ static int zd1201_config_commit(struct net_device *dev,
}
static int zd1201_get_name(struct net_device *dev,
- struct iw_request_info *info, char *name, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
- strcpy(name, "IEEE 802.11b");
+ strcpy(wrqu->name, "IEEE 802.11b");
return 0;
}
static int zd1201_set_freq(struct net_device *dev,
- struct iw_request_info *info, struct iw_freq *freq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *freq = &wrqu->freq;
struct zd1201 *zd = netdev_priv(dev);
short channel = 0;
int err;
@@ -922,8 +923,9 @@ static int zd1201_set_freq(struct net_device *dev,
}
static int zd1201_get_freq(struct net_device *dev,
- struct iw_request_info *info, struct iw_freq *freq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_freq *freq = &wrqu->freq;
struct zd1201 *zd = netdev_priv(dev);
short channel;
int err;
@@ -938,8 +940,9 @@ static int zd1201_get_freq(struct net_device *dev,
}
static int zd1201_set_mode(struct net_device *dev,
- struct iw_request_info *info, __u32 *mode, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct zd1201 *zd = netdev_priv(dev);
short porttype, monitor = 0;
unsigned char buffer[IW_ESSID_MAX_SIZE+2];
@@ -1001,8 +1004,9 @@ static int zd1201_set_mode(struct net_device *dev,
}
static int zd1201_get_mode(struct net_device *dev,
- struct iw_request_info *info, __u32 *mode, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ __u32 *mode = &wrqu->mode;
struct zd1201 *zd = netdev_priv(dev);
short porttype;
int err;
@@ -1038,8 +1042,9 @@ static int zd1201_get_mode(struct net_device *dev,
}
static int zd1201_get_range(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *wrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *wrq = &wrqu->data;
struct iw_range *range = (struct iw_range *)extra;
wrq->length = sizeof(struct iw_range);
@@ -1077,8 +1082,9 @@ static int zd1201_get_range(struct net_device *dev,
* the stats after asking the bssid.
*/
static int zd1201_get_wap(struct net_device *dev,
- struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *ap_addr = &wrqu->ap_addr;
struct zd1201 *zd = netdev_priv(dev);
unsigned char buffer[6];
@@ -1098,15 +1104,16 @@ static int zd1201_get_wap(struct net_device *dev,
}
static int zd1201_set_scan(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *srq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
/* We do everything in get_scan */
return 0;
}
static int zd1201_get_scan(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *srq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_point *srq = &wrqu->data;
struct zd1201 *zd = netdev_priv(dev);
int err, i, j, enabled_save;
struct iw_event iwe;
@@ -1197,8 +1204,9 @@ static int zd1201_get_scan(struct net_device *dev,
}
static int zd1201_set_essid(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *data, char *essid)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
+ struct iw_point *data = &wrqu->data;
struct zd1201 *zd = netdev_priv(dev);
if (data->length > IW_ESSID_MAX_SIZE)
@@ -1212,8 +1220,9 @@ static int zd1201_set_essid(struct net_device *dev,
}
static int zd1201_get_essid(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *data, char *essid)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
+ struct iw_point *data = &wrqu->data;
struct zd1201 *zd = netdev_priv(dev);
memcpy(essid, zd->essid, zd->essidlen);
@@ -1224,8 +1233,9 @@ static int zd1201_get_essid(struct net_device *dev,
}
static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
- struct iw_point *data, char *nick)
+ union iwreq_data *wrqu, char *nick)
{
+ struct iw_point *data = &wrqu->data;
strcpy(nick, "zd1201");
data->flags = 1;
data->length = strlen(nick);
@@ -1233,8 +1243,9 @@ static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info,
}
static int zd1201_set_rate(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
struct zd1201 *zd = netdev_priv(dev);
short rate;
int err;
@@ -1266,8 +1277,9 @@ static int zd1201_set_rate(struct net_device *dev,
}
static int zd1201_get_rate(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->bitrate;
struct zd1201 *zd = netdev_priv(dev);
short rate;
int err;
@@ -1299,8 +1311,9 @@ static int zd1201_get_rate(struct net_device *dev,
}
static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct zd1201 *zd = netdev_priv(dev);
int err;
short val = rts->value;
@@ -1319,8 +1332,9 @@ static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,
}
static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *rts, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rts = &wrqu->rts;
struct zd1201 *zd = netdev_priv(dev);
short rtst;
int err;
@@ -1336,8 +1350,9 @@ static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,
}
static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *frag, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *frag = &wrqu->frag;
struct zd1201 *zd = netdev_priv(dev);
int err;
short val = frag->value;
@@ -1357,8 +1372,9 @@ static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,
}
static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
- struct iw_param *frag, char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *frag = &wrqu->frag;
struct zd1201 *zd = netdev_priv(dev);
short fragt;
int err;
@@ -1374,20 +1390,21 @@ static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,
}
static int zd1201_set_retry(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
return 0;
}
static int zd1201_get_retry(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
return 0;
}
static int zd1201_set_encode(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *erq, char *key)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *key)
{
+ struct iw_point *erq = &wrqu->encoding;
struct zd1201 *zd = netdev_priv(dev);
short i;
int err, rid;
@@ -1443,8 +1460,9 @@ static int zd1201_set_encode(struct net_device *dev,
}
static int zd1201_get_encode(struct net_device *dev,
- struct iw_request_info *info, struct iw_point *erq, char *key)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *key)
{
+ struct iw_point *erq = &wrqu->encoding;
struct zd1201 *zd = netdev_priv(dev);
short i;
int err;
@@ -1476,8 +1494,9 @@ static int zd1201_get_encode(struct net_device *dev,
}
static int zd1201_set_power(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *vwrq = &wrqu->power;
struct zd1201 *zd = netdev_priv(dev);
short enabled, duration, level;
int err;
@@ -1515,8 +1534,9 @@ static int zd1201_set_power(struct net_device *dev,
}
static int zd1201_get_power(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *vwrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *vwrq = &wrqu->power;
struct zd1201 *zd = netdev_priv(dev);
short enabled, level, duration;
int err;
@@ -1553,57 +1573,37 @@ static int zd1201_get_power(struct net_device *dev,
static const iw_handler zd1201_iw_handler[] =
{
- (iw_handler) zd1201_config_commit, /* SIOCSIWCOMMIT */
- (iw_handler) zd1201_get_name, /* SIOCGIWNAME */
- (iw_handler) NULL, /* SIOCSIWNWID */
- (iw_handler) NULL, /* SIOCGIWNWID */
- (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
- (iw_handler) zd1201_get_freq, /* SIOCGIWFREQ */
- (iw_handler) zd1201_set_mode, /* SIOCSIWMODE */
- (iw_handler) zd1201_get_mode, /* SIOCGIWMODE */
- (iw_handler) NULL, /* SIOCSIWSENS */
- (iw_handler) NULL, /* SIOCGIWSENS */
- (iw_handler) NULL, /* SIOCSIWRANGE */
- (iw_handler) zd1201_get_range, /* SIOCGIWRANGE */
- (iw_handler) NULL, /* SIOCSIWPRIV */
- (iw_handler) NULL, /* SIOCGIWPRIV */
- (iw_handler) NULL, /* SIOCSIWSTATS */
- (iw_handler) NULL, /* SIOCGIWSTATS */
- (iw_handler) NULL, /* SIOCSIWSPY */
- (iw_handler) NULL, /* SIOCGIWSPY */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL/*zd1201_set_wap*/, /* SIOCSIWAP */
- (iw_handler) zd1201_get_wap, /* SIOCGIWAP */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* SIOCGIWAPLIST */
- (iw_handler) zd1201_set_scan, /* SIOCSIWSCAN */
- (iw_handler) zd1201_get_scan, /* SIOCGIWSCAN */
- (iw_handler) zd1201_set_essid, /* SIOCSIWESSID */
- (iw_handler) zd1201_get_essid, /* SIOCGIWESSID */
- (iw_handler) NULL, /* SIOCSIWNICKN */
- (iw_handler) zd1201_get_nick, /* SIOCGIWNICKN */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) zd1201_set_rate, /* SIOCSIWRATE */
- (iw_handler) zd1201_get_rate, /* SIOCGIWRATE */
- (iw_handler) zd1201_set_rts, /* SIOCSIWRTS */
- (iw_handler) zd1201_get_rts, /* SIOCGIWRTS */
- (iw_handler) zd1201_set_frag, /* SIOCSIWFRAG */
- (iw_handler) zd1201_get_frag, /* SIOCGIWFRAG */
- (iw_handler) NULL, /* SIOCSIWTXPOW */
- (iw_handler) NULL, /* SIOCGIWTXPOW */
- (iw_handler) zd1201_set_retry, /* SIOCSIWRETRY */
- (iw_handler) zd1201_get_retry, /* SIOCGIWRETRY */
- (iw_handler) zd1201_set_encode, /* SIOCSIWENCODE */
- (iw_handler) zd1201_get_encode, /* SIOCGIWENCODE */
- (iw_handler) zd1201_set_power, /* SIOCSIWPOWER */
- (iw_handler) zd1201_get_power, /* SIOCGIWPOWER */
+ IW_HANDLER(SIOCSIWCOMMIT, zd1201_config_commit),
+ IW_HANDLER(SIOCGIWNAME, zd1201_get_name),
+ IW_HANDLER(SIOCSIWFREQ, zd1201_set_freq),
+ IW_HANDLER(SIOCGIWFREQ, zd1201_get_freq),
+ IW_HANDLER(SIOCSIWMODE, zd1201_set_mode),
+ IW_HANDLER(SIOCGIWMODE, zd1201_get_mode),
+ IW_HANDLER(SIOCGIWRANGE, zd1201_get_range),
+ IW_HANDLER(SIOCGIWAP, zd1201_get_wap),
+ IW_HANDLER(SIOCSIWSCAN, zd1201_set_scan),
+ IW_HANDLER(SIOCGIWSCAN, zd1201_get_scan),
+ IW_HANDLER(SIOCSIWESSID, zd1201_set_essid),
+ IW_HANDLER(SIOCGIWESSID, zd1201_get_essid),
+ IW_HANDLER(SIOCGIWNICKN, zd1201_get_nick),
+ IW_HANDLER(SIOCSIWRATE, zd1201_set_rate),
+ IW_HANDLER(SIOCGIWRATE, zd1201_get_rate),
+ IW_HANDLER(SIOCSIWRTS, zd1201_set_rts),
+ IW_HANDLER(SIOCGIWRTS, zd1201_get_rts),
+ IW_HANDLER(SIOCSIWFRAG, zd1201_set_frag),
+ IW_HANDLER(SIOCGIWFRAG, zd1201_get_frag),
+ IW_HANDLER(SIOCSIWRETRY, zd1201_set_retry),
+ IW_HANDLER(SIOCGIWRETRY, zd1201_get_retry),
+ IW_HANDLER(SIOCSIWENCODE, zd1201_set_encode),
+ IW_HANDLER(SIOCGIWENCODE, zd1201_get_encode),
+ IW_HANDLER(SIOCSIWPOWER, zd1201_set_power),
+ IW_HANDLER(SIOCGIWPOWER, zd1201_get_power),
};
static int zd1201_set_hostauth(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->param;
struct zd1201 *zd = netdev_priv(dev);
if (!zd->ap)
@@ -1613,8 +1613,9 @@ static int zd1201_set_hostauth(struct net_device *dev,
}
static int zd1201_get_hostauth(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->param;
struct zd1201 *zd = netdev_priv(dev);
short hostauth;
int err;
@@ -1632,8 +1633,9 @@ static int zd1201_get_hostauth(struct net_device *dev,
}
static int zd1201_auth_sta(struct net_device *dev,
- struct iw_request_info *info, struct sockaddr *sta, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct sockaddr *sta = &wrqu->ap_addr;
struct zd1201 *zd = netdev_priv(dev);
unsigned char buffer[10];
@@ -1648,8 +1650,9 @@ static int zd1201_auth_sta(struct net_device *dev,
}
static int zd1201_set_maxassoc(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->param;
struct zd1201 *zd = netdev_priv(dev);
if (!zd->ap)
@@ -1659,8 +1662,9 @@ static int zd1201_set_maxassoc(struct net_device *dev,
}
static int zd1201_get_maxassoc(struct net_device *dev,
- struct iw_request_info *info, struct iw_param *rrq, char *extra)
+ struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *rrq = &wrqu->param;
struct zd1201 *zd = netdev_priv(dev);
short maxassoc;
int err;
@@ -1703,8 +1707,8 @@ static const struct iw_handler_def zd1201_iw_handlers = {
.num_standard = ARRAY_SIZE(zd1201_iw_handler),
.num_private = ARRAY_SIZE(zd1201_private_handler),
.num_private_args = ARRAY_SIZE(zd1201_private_args),
- .standard = (iw_handler *)zd1201_iw_handler,
- .private = (iw_handler *)zd1201_private_handler,
+ .standard = zd1201_iw_handler,
+ .private = zd1201_private_handler,
.private_args = (struct iw_priv_args *) zd1201_private_args,
.get_wireless_stats = zd1201_get_wireless_stats,
};
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [PATCH v2 4/6] airo: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
` (2 preceding siblings ...)
2022-10-27 20:19 ` [PATCH v2 3/6] zd1201: " Gustavo A. R. Silva
@ 2022-10-27 20:20 ` Gustavo A. R. Silva
2022-10-27 20:20 ` [PATCH v2 5/6] bna: " Gustavo A. R. Silva
2022-10-27 20:22 ` [PATCH v2 6/6] staging: ks7010: " Gustavo A. R. Silva
5 siblings, 0 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:20 UTC (permalink / raw)
To: Kalle Valo, David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 32 warnings like these:
../drivers/net/wireless/cisco/airo.c:7570:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, void *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
(iw_handler) airo_config_commit, /* SIOCSIWCOMMIT */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The airo Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch. There are no resulting binary differences
before/after changes.
Link: https://github.com/KSPP/linux/issues/236
Link: https://reviews.llvm.org/D134831 [1]
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- Add RB tag from Kees.
v1:
- Link: https://lore.kernel.org/linux-hardening/ab0047382e6fd20c694e4ca14de8ca2c2a0e19d0.1666038048.git.gustavoars@kernel.org/
drivers/net/wireless/cisco/airo.c | 204 ++++++++++++++++--------------
1 file changed, 108 insertions(+), 96 deletions(-)
diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 10daef81c355..cfa8d3f53482 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -4807,7 +4807,8 @@ static int get_dec_u16(char *buffer, int *start, int limit)
}
static int airo_config_commit(struct net_device *dev,
- struct iw_request_info *info, void *zwrq,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu,
char *extra);
static inline int sniffing_mode(struct airo_info *ai)
@@ -5804,10 +5805,10 @@ static int airo_get_quality (StatusRid *status_rid, CapabilityRid *cap_rid)
*/
static int airo_get_name(struct net_device *dev,
struct iw_request_info *info,
- char *cwrq,
+ union iwreq_data *cwrq,
char *extra)
{
- strcpy(cwrq, "IEEE 802.11-DS");
+ strcpy(cwrq->name, "IEEE 802.11-DS");
return 0;
}
@@ -5817,9 +5818,10 @@ static int airo_get_name(struct net_device *dev,
*/
static int airo_set_freq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *fwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_freq *fwrq = &wrqu->freq;
struct airo_info *local = dev->ml_priv;
int rc = -EINPROGRESS; /* Call commit handler */
@@ -5858,9 +5860,10 @@ static int airo_set_freq(struct net_device *dev,
*/
static int airo_get_freq(struct net_device *dev,
struct iw_request_info *info,
- struct iw_freq *fwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_freq *fwrq = &wrqu->freq;
struct airo_info *local = dev->ml_priv;
StatusRid status_rid; /* Card status info */
int ch;
@@ -5890,9 +5893,10 @@ static int airo_get_freq(struct net_device *dev,
*/
static int airo_set_essid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->essid;
struct airo_info *local = dev->ml_priv;
SsidRid SSID_rid; /* SSIDs */
@@ -5935,9 +5939,10 @@ static int airo_set_essid(struct net_device *dev,
*/
static int airo_get_essid(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->essid;
struct airo_info *local = dev->ml_priv;
StatusRid status_rid; /* Card status info */
@@ -5963,9 +5968,10 @@ static int airo_get_essid(struct net_device *dev,
*/
static int airo_set_wap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *awrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct sockaddr *awrq = &wrqu->ap_addr;
struct airo_info *local = dev->ml_priv;
Cmd cmd;
Resp rsp;
@@ -5998,9 +6004,10 @@ static int airo_set_wap(struct net_device *dev,
*/
static int airo_get_wap(struct net_device *dev,
struct iw_request_info *info,
- struct sockaddr *awrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct sockaddr *awrq = &wrqu->ap_addr;
struct airo_info *local = dev->ml_priv;
StatusRid status_rid; /* Card status info */
@@ -6019,9 +6026,10 @@ static int airo_get_wap(struct net_device *dev,
*/
static int airo_set_nick(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->data;
struct airo_info *local = dev->ml_priv;
/* Check the size of the string */
@@ -6042,9 +6050,10 @@ static int airo_set_nick(struct net_device *dev,
*/
static int airo_get_nick(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->data;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -6061,9 +6070,10 @@ static int airo_get_nick(struct net_device *dev,
*/
static int airo_set_rate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->bitrate;
struct airo_info *local = dev->ml_priv;
CapabilityRid cap_rid; /* Card capability info */
u8 brate = 0;
@@ -6131,9 +6141,10 @@ static int airo_set_rate(struct net_device *dev,
*/
static int airo_get_rate(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->bitrate;
struct airo_info *local = dev->ml_priv;
StatusRid status_rid; /* Card status info */
@@ -6153,9 +6164,10 @@ static int airo_get_rate(struct net_device *dev,
*/
static int airo_set_rts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->rts;
struct airo_info *local = dev->ml_priv;
int rthr = vwrq->value;
@@ -6177,9 +6189,10 @@ static int airo_set_rts(struct net_device *dev,
*/
static int airo_get_rts(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->rts;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -6196,9 +6209,9 @@ static int airo_get_rts(struct net_device *dev,
*/
static int airo_set_frag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
- char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *vwrq = &wrqu->frag;
struct airo_info *local = dev->ml_priv;
int fthr = vwrq->value;
@@ -6221,9 +6234,10 @@ static int airo_set_frag(struct net_device *dev,
*/
static int airo_get_frag(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->frag;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -6240,9 +6254,10 @@ static int airo_get_frag(struct net_device *dev,
*/
static int airo_set_mode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *uwrq,
+ union iwreq_data *uwrq,
char *extra)
{
+ __u32 mode = uwrq->mode;
struct airo_info *local = dev->ml_priv;
int reset = 0;
@@ -6250,7 +6265,7 @@ static int airo_set_mode(struct net_device *dev,
if (sniffing_mode(local))
reset = 1;
- switch(*uwrq) {
+ switch (mode) {
case IW_MODE_ADHOC:
local->config.opmode &= ~MODE_CFG_MASK;
local->config.opmode |= MODE_STA_IBSS;
@@ -6303,7 +6318,7 @@ static int airo_set_mode(struct net_device *dev,
*/
static int airo_get_mode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *uwrq,
+ union iwreq_data *uwrq,
char *extra)
{
struct airo_info *local = dev->ml_priv;
@@ -6312,16 +6327,16 @@ static int airo_get_mode(struct net_device *dev,
/* If not managed, assume it's ad-hoc */
switch (local->config.opmode & MODE_CFG_MASK) {
case MODE_STA_ESS:
- *uwrq = IW_MODE_INFRA;
+ uwrq->mode = IW_MODE_INFRA;
break;
case MODE_AP:
- *uwrq = IW_MODE_MASTER;
+ uwrq->mode = IW_MODE_MASTER;
break;
case MODE_AP_RPTR:
- *uwrq = IW_MODE_REPEAT;
+ uwrq->mode = IW_MODE_REPEAT;
break;
default:
- *uwrq = IW_MODE_ADHOC;
+ uwrq->mode = IW_MODE_ADHOC;
}
return 0;
@@ -6338,9 +6353,10 @@ static inline int valid_index(struct airo_info *ai, int index)
*/
static int airo_set_encode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->encoding;
struct airo_info *local = dev->ml_priv;
int perm = (dwrq->flags & IW_ENCODE_TEMP ? 0 : 1);
__le16 currentAuthType = local->config.authType;
@@ -6437,9 +6453,10 @@ static int airo_set_encode(struct net_device *dev,
*/
static int airo_get_encode(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->encoding;
struct airo_info *local = dev->ml_priv;
int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
int wep_key_len;
@@ -6784,9 +6801,10 @@ static int airo_get_auth(struct net_device *dev,
*/
static int airo_set_txpow(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->txpower;
struct airo_info *local = dev->ml_priv;
CapabilityRid cap_rid; /* Card capability info */
int i;
@@ -6821,9 +6839,10 @@ static int airo_set_txpow(struct net_device *dev,
*/
static int airo_get_txpow(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->txpower;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -6841,9 +6860,10 @@ static int airo_get_txpow(struct net_device *dev,
*/
static int airo_set_retry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->retry;
struct airo_info *local = dev->ml_priv;
int rc = -EINVAL;
@@ -6879,9 +6899,10 @@ static int airo_set_retry(struct net_device *dev,
*/
static int airo_get_retry(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->retry;
struct airo_info *local = dev->ml_priv;
vwrq->disabled = 0; /* Can't be disabled */
@@ -6910,9 +6931,10 @@ static int airo_get_retry(struct net_device *dev,
*/
static int airo_get_range(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->data;
struct airo_info *local = dev->ml_priv;
struct iw_range *range = (struct iw_range *) extra;
CapabilityRid cap_rid; /* Card capability info */
@@ -7036,9 +7058,9 @@ static int airo_get_range(struct net_device *dev,
*/
static int airo_set_power(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
- char *extra)
+ union iwreq_data *wrqu, char *extra)
{
+ struct iw_param *vwrq = &wrqu->power;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -7094,9 +7116,10 @@ static int airo_set_power(struct net_device *dev,
*/
static int airo_get_power(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->power;
struct airo_info *local = dev->ml_priv;
__le16 mode;
@@ -7125,9 +7148,10 @@ static int airo_get_power(struct net_device *dev,
*/
static int airo_set_sens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->sens;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -7144,9 +7168,10 @@ static int airo_set_sens(struct net_device *dev,
*/
static int airo_get_sens(struct net_device *dev,
struct iw_request_info *info,
- struct iw_param *vwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_param *vwrq = &wrqu->sens;
struct airo_info *local = dev->ml_priv;
readConfigRid(local, 1);
@@ -7164,9 +7189,10 @@ static int airo_get_sens(struct net_device *dev,
*/
static int airo_get_aplist(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->data;
struct airo_info *local = dev->ml_priv;
struct sockaddr *address = (struct sockaddr *) extra;
struct iw_quality *qual;
@@ -7242,7 +7268,7 @@ static int airo_get_aplist(struct net_device *dev,
*/
static int airo_set_scan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
struct airo_info *ai = dev->ml_priv;
@@ -7473,9 +7499,10 @@ static inline char *airo_translate_scan(struct net_device *dev,
*/
static int airo_get_scan(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq,
+ union iwreq_data *wrqu,
char *extra)
{
+ struct iw_point *dwrq = &wrqu->data;
struct airo_info *ai = dev->ml_priv;
BSSListElement *net;
int err = 0;
@@ -7517,7 +7544,7 @@ static int airo_get_scan(struct net_device *dev,
*/
static int airo_config_commit(struct net_device *dev,
struct iw_request_info *info, /* NULL */
- void *zwrq, /* NULL */
+ union iwreq_data *wrqu, /* NULL */
char *extra) /* NULL */
{
struct airo_info *local = dev->ml_priv;
@@ -7567,61 +7594,46 @@ static const struct iw_priv_args airo_private_args[] = {
static const iw_handler airo_handler[] =
{
- (iw_handler) airo_config_commit, /* SIOCSIWCOMMIT */
- (iw_handler) airo_get_name, /* SIOCGIWNAME */
- (iw_handler) NULL, /* SIOCSIWNWID */
- (iw_handler) NULL, /* SIOCGIWNWID */
- (iw_handler) airo_set_freq, /* SIOCSIWFREQ */
- (iw_handler) airo_get_freq, /* SIOCGIWFREQ */
- (iw_handler) airo_set_mode, /* SIOCSIWMODE */
- (iw_handler) airo_get_mode, /* SIOCGIWMODE */
- (iw_handler) airo_set_sens, /* SIOCSIWSENS */
- (iw_handler) airo_get_sens, /* SIOCGIWSENS */
- (iw_handler) NULL, /* SIOCSIWRANGE */
- (iw_handler) airo_get_range, /* SIOCGIWRANGE */
- (iw_handler) NULL, /* SIOCSIWPRIV */
- (iw_handler) NULL, /* SIOCGIWPRIV */
- (iw_handler) NULL, /* SIOCSIWSTATS */
- (iw_handler) NULL, /* SIOCGIWSTATS */
- iw_handler_set_spy, /* SIOCSIWSPY */
- iw_handler_get_spy, /* SIOCGIWSPY */
- iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
- iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
- (iw_handler) airo_set_wap, /* SIOCSIWAP */
- (iw_handler) airo_get_wap, /* SIOCGIWAP */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) airo_get_aplist, /* SIOCGIWAPLIST */
- (iw_handler) airo_set_scan, /* SIOCSIWSCAN */
- (iw_handler) airo_get_scan, /* SIOCGIWSCAN */
- (iw_handler) airo_set_essid, /* SIOCSIWESSID */
- (iw_handler) airo_get_essid, /* SIOCGIWESSID */
- (iw_handler) airo_set_nick, /* SIOCSIWNICKN */
- (iw_handler) airo_get_nick, /* SIOCGIWNICKN */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) airo_set_rate, /* SIOCSIWRATE */
- (iw_handler) airo_get_rate, /* SIOCGIWRATE */
- (iw_handler) airo_set_rts, /* SIOCSIWRTS */
- (iw_handler) airo_get_rts, /* SIOCGIWRTS */
- (iw_handler) airo_set_frag, /* SIOCSIWFRAG */
- (iw_handler) airo_get_frag, /* SIOCGIWFRAG */
- (iw_handler) airo_set_txpow, /* SIOCSIWTXPOW */
- (iw_handler) airo_get_txpow, /* SIOCGIWTXPOW */
- (iw_handler) airo_set_retry, /* SIOCSIWRETRY */
- (iw_handler) airo_get_retry, /* SIOCGIWRETRY */
- (iw_handler) airo_set_encode, /* SIOCSIWENCODE */
- (iw_handler) airo_get_encode, /* SIOCGIWENCODE */
- (iw_handler) airo_set_power, /* SIOCSIWPOWER */
- (iw_handler) airo_get_power, /* SIOCGIWPOWER */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* SIOCSIWGENIE */
- (iw_handler) NULL, /* SIOCGIWGENIE */
- (iw_handler) airo_set_auth, /* SIOCSIWAUTH */
- (iw_handler) airo_get_auth, /* SIOCGIWAUTH */
- (iw_handler) airo_set_encodeext, /* SIOCSIWENCODEEXT */
- (iw_handler) airo_get_encodeext, /* SIOCGIWENCODEEXT */
- (iw_handler) NULL, /* SIOCSIWPMKSA */
+ IW_HANDLER(SIOCSIWCOMMIT, airo_config_commit),
+ IW_HANDLER(SIOCGIWNAME, airo_get_name),
+ IW_HANDLER(SIOCSIWFREQ, airo_set_freq),
+ IW_HANDLER(SIOCGIWFREQ, airo_get_freq),
+ IW_HANDLER(SIOCSIWMODE, airo_set_mode),
+ IW_HANDLER(SIOCGIWMODE, airo_get_mode),
+ IW_HANDLER(SIOCSIWSENS, airo_set_sens),
+ IW_HANDLER(SIOCGIWSENS, airo_get_sens),
+ IW_HANDLER(SIOCGIWRANGE, airo_get_range),
+ IW_HANDLER(SIOCSIWSPY, iw_handler_set_spy),
+ IW_HANDLER(SIOCGIWSPY, iw_handler_get_spy),
+ IW_HANDLER(SIOCSIWTHRSPY, iw_handler_set_thrspy),
+ IW_HANDLER(SIOCGIWTHRSPY, iw_handler_get_thrspy),
+ IW_HANDLER(SIOCSIWAP, airo_set_wap),
+ IW_HANDLER(SIOCGIWAP, airo_get_wap),
+ IW_HANDLER(SIOCGIWAPLIST, airo_get_aplist),
+ IW_HANDLER(SIOCSIWSCAN, airo_set_scan),
+ IW_HANDLER(SIOCGIWSCAN, airo_get_scan),
+ IW_HANDLER(SIOCSIWESSID, airo_set_essid),
+ IW_HANDLER(SIOCGIWESSID, airo_get_essid),
+ IW_HANDLER(SIOCSIWNICKN, airo_set_nick),
+ IW_HANDLER(SIOCGIWNICKN, airo_get_nick),
+ IW_HANDLER(SIOCSIWRATE, airo_set_rate),
+ IW_HANDLER(SIOCGIWRATE, airo_get_rate),
+ IW_HANDLER(SIOCSIWRTS, airo_set_rts),
+ IW_HANDLER(SIOCGIWRTS, airo_get_rts),
+ IW_HANDLER(SIOCSIWFRAG, airo_set_frag),
+ IW_HANDLER(SIOCGIWFRAG, airo_get_frag),
+ IW_HANDLER(SIOCSIWTXPOW, airo_set_txpow),
+ IW_HANDLER(SIOCGIWTXPOW, airo_get_txpow),
+ IW_HANDLER(SIOCSIWRETRY, airo_set_retry),
+ IW_HANDLER(SIOCGIWRETRY, airo_get_retry),
+ IW_HANDLER(SIOCSIWENCODE, airo_set_encode),
+ IW_HANDLER(SIOCGIWENCODE, airo_get_encode),
+ IW_HANDLER(SIOCSIWPOWER, airo_set_power),
+ IW_HANDLER(SIOCGIWPOWER, airo_get_power),
+ IW_HANDLER(SIOCSIWAUTH, airo_set_auth),
+ IW_HANDLER(SIOCGIWAUTH, airo_get_auth),
+ IW_HANDLER(SIOCSIWENCODEEXT, airo_set_encodeext),
+ IW_HANDLER(SIOCGIWENCODEEXT, airo_get_encodeext),
};
/* Note : don't describe AIROIDIFC and AIROOLDIDIFC in here.
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [PATCH v2 5/6] bna: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
` (3 preceding siblings ...)
2022-10-27 20:20 ` [PATCH v2 4/6] airo: " Gustavo A. R. Silva
@ 2022-10-27 20:20 ` Gustavo A. R. Silva
2022-10-29 7:12 ` Kees Cook
2022-10-27 20:22 ` [PATCH v2 6/6] staging: ks7010: " Gustavo A. R. Silva
5 siblings, 1 reply; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:20 UTC (permalink / raw)
To: Sudarsana Kalluru, GR-Linux-NIC-Dev, Rasesh Mody,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-kernel, Kees Cook, Gustavo A. R. Silva, linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 227 warnings like these:
drivers/net/ethernet/brocade/bna/bna_enet.c:519:3: warning: cast from 'void (*)(struct bna_ethport *, enum bna_ethport_event)' to 'bfa_fsm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Wcast-function-type-strict]
bfa_fsm_set_state(ethport, bna_ethport_sm_down);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The bna state machine code heavily overloads its state machine functions,
so these have been separated into their own sets of structs, enums,
typedefs, and helper functions. There are almost zero binary code changes,
all seem to be related to header file line numbers changing, or the
addition of the new stats helper.
[1] https://reviews.llvm.org/D134831
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- None. This patch is new in the series.
drivers/net/ethernet/brocade/bna/bfa_cs.h | 60 +++++++++++++-------
drivers/net/ethernet/brocade/bna/bfa_ioc.c | 10 ++--
drivers/net/ethernet/brocade/bna/bfa_ioc.h | 8 ++-
drivers/net/ethernet/brocade/bna/bfa_msgq.h | 8 ++-
drivers/net/ethernet/brocade/bna/bna_enet.c | 6 +-
drivers/net/ethernet/brocade/bna/bna_tx_rx.c | 6 +-
drivers/net/ethernet/brocade/bna/bna_types.h | 27 +++++++--
7 files changed, 82 insertions(+), 43 deletions(-)
diff --git a/drivers/net/ethernet/brocade/bna/bfa_cs.h b/drivers/net/ethernet/brocade/bna/bfa_cs.h
index 8f0ac7b99973..858c92129451 100644
--- a/drivers/net/ethernet/brocade/bna/bfa_cs.h
+++ b/drivers/net/ethernet/brocade/bna/bfa_cs.h
@@ -18,15 +18,43 @@
/* BFA state machine interfaces */
-typedef void (*bfa_sm_t)(void *sm, int event);
-
/* For converting from state machine function to state encoding. */
-struct bfa_sm_table {
- bfa_sm_t sm; /*!< state machine function */
- int state; /*!< state machine encoding */
- char *name; /*!< state name for display */
-};
-#define BFA_SM(_sm) ((bfa_sm_t)(_sm))
+#define BFA_SM_TABLE(n, s, e, t) \
+struct s; \
+enum e; \
+typedef void (*t)(struct s *, enum e); \
+ \
+struct n ## _sm_table_s { \
+ t sm; /* state machine function */ \
+ int state; /* state machine encoding */ \
+ char *name; /* state name for display */ \
+}; \
+ \
+static inline int \
+n ## _sm_to_state(struct n ## _sm_table_s *smt, t sm) \
+{ \
+ int i = 0; \
+ \
+ while (smt[i].sm && smt[i].sm != sm) \
+ i++; \
+ return smt[i].state; \
+}
+
+BFA_SM_TABLE(iocpf, bfa_iocpf, iocpf_event, bfa_fsm_iocpf_t)
+BFA_SM_TABLE(ioc, bfa_ioc, ioc_event, bfa_fsm_ioc_t)
+BFA_SM_TABLE(cmdq, bfa_msgq_cmdq, cmdq_event, bfa_fsm_msgq_cmdq_t)
+BFA_SM_TABLE(rspq, bfa_msgq_rspq, rspq_event, bfa_fsm_msgq_rspq_t)
+
+BFA_SM_TABLE(ioceth, bna_ioceth, bna_ioceth_event, bna_fsm_ioceth_t)
+BFA_SM_TABLE(enet, bna_enet, bna_enet_event, bna_fsm_enet_t)
+BFA_SM_TABLE(ethport, bna_ethport, bna_ethport_event, bna_fsm_ethport_t)
+BFA_SM_TABLE(tx, bna_tx, bna_tx_event, bna_fsm_tx_t)
+BFA_SM_TABLE(rxf, bna_rxf, bna_rxf_event, bna_fsm_rxf_t)
+BFA_SM_TABLE(rx, bna_rx, bna_rx_event, bna_fsm_rx_t)
+
+#undef BFA_SM_TABLE
+
+#define BFA_SM(_sm) (_sm)
/* State machine with entry actions. */
typedef void (*bfa_fsm_t)(void *fsm, int event);
@@ -41,24 +69,12 @@ typedef void (*bfa_fsm_t)(void *fsm, int event);
static void oc ## _sm_ ## st ## _entry(otype * fsm)
#define bfa_fsm_set_state(_fsm, _state) do { \
- (_fsm)->fsm = (bfa_fsm_t)(_state); \
+ (_fsm)->fsm = (_state); \
_state ## _entry(_fsm); \
} while (0)
#define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event)))
-#define bfa_fsm_cmp_state(_fsm, _state) \
- ((_fsm)->fsm == (bfa_fsm_t)(_state))
-
-static inline int
-bfa_sm_to_state(const struct bfa_sm_table *smt, bfa_sm_t sm)
-{
- int i = 0;
-
- while (smt[i].sm && smt[i].sm != sm)
- i++;
- return smt[i].state;
-}
-
+#define bfa_fsm_cmp_state(_fsm, _state) ((_fsm)->fsm == (_state))
/* Generic wait counter. */
typedef void (*bfa_wc_resume_t) (void *cbarg);
diff --git a/drivers/net/ethernet/brocade/bna/bfa_ioc.c b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
index cd933817a0b8..b07522ac3e74 100644
--- a/drivers/net/ethernet/brocade/bna/bfa_ioc.c
+++ b/drivers/net/ethernet/brocade/bna/bfa_ioc.c
@@ -114,7 +114,7 @@ bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, hwfail, struct bfa_ioc, enum ioc_event);
-static struct bfa_sm_table ioc_sm_table[] = {
+static struct ioc_sm_table_s ioc_sm_table[] = {
{BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
{BFA_SM(bfa_ioc_sm_reset), BFA_IOC_RESET},
{BFA_SM(bfa_ioc_sm_enabling), BFA_IOC_ENABLING},
@@ -183,7 +183,7 @@ bfa_fsm_state_decl(bfa_iocpf, disabling_sync, struct bfa_iocpf,
enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabled, struct bfa_iocpf, enum iocpf_event);
-static struct bfa_sm_table iocpf_sm_table[] = {
+static struct iocpf_sm_table_s iocpf_sm_table[] = {
{BFA_SM(bfa_iocpf_sm_reset), BFA_IOCPF_RESET},
{BFA_SM(bfa_iocpf_sm_fwcheck), BFA_IOCPF_FWMISMATCH},
{BFA_SM(bfa_iocpf_sm_mismatch), BFA_IOCPF_FWMISMATCH},
@@ -2860,12 +2860,12 @@ static enum bfa_ioc_state
bfa_ioc_get_state(struct bfa_ioc *ioc)
{
enum bfa_iocpf_state iocpf_st;
- enum bfa_ioc_state ioc_st = bfa_sm_to_state(ioc_sm_table, ioc->fsm);
+ enum bfa_ioc_state ioc_st = ioc_sm_to_state(ioc_sm_table, ioc->fsm);
if (ioc_st == BFA_IOC_ENABLING ||
ioc_st == BFA_IOC_FAIL || ioc_st == BFA_IOC_INITFAIL) {
- iocpf_st = bfa_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
+ iocpf_st = iocpf_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
switch (iocpf_st) {
case BFA_IOCPF_SEMWAIT:
@@ -2983,7 +2983,7 @@ bfa_nw_iocpf_timeout(struct bfa_ioc *ioc)
{
enum bfa_iocpf_state iocpf_st;
- iocpf_st = bfa_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
+ iocpf_st = iocpf_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
if (iocpf_st == BFA_IOCPF_HWINIT)
bfa_ioc_poll_fwinit(ioc);
diff --git a/drivers/net/ethernet/brocade/bna/bfa_ioc.h b/drivers/net/ethernet/brocade/bna/bfa_ioc.h
index edd0ed5b5332..f30d06ec4ffe 100644
--- a/drivers/net/ethernet/brocade/bna/bfa_ioc.h
+++ b/drivers/net/ethernet/brocade/bna/bfa_ioc.h
@@ -147,16 +147,20 @@ struct bfa_ioc_notify {
(__notify)->cbarg = (__cbarg); \
} while (0)
+enum iocpf_event;
+
struct bfa_iocpf {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bfa_iocpf *s, enum iocpf_event e);
struct bfa_ioc *ioc;
bool fw_mismatch_notified;
bool auto_recover;
u32 poll_time;
};
+enum ioc_event;
+
struct bfa_ioc {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bfa_ioc *s, enum ioc_event e);
struct bfa *bfa;
struct bfa_pcidev pcidev;
struct timer_list ioc_timer;
diff --git a/drivers/net/ethernet/brocade/bna/bfa_msgq.h b/drivers/net/ethernet/brocade/bna/bfa_msgq.h
index 75343b535798..170a4b4bed96 100644
--- a/drivers/net/ethernet/brocade/bna/bfa_msgq.h
+++ b/drivers/net/ethernet/brocade/bna/bfa_msgq.h
@@ -55,8 +55,10 @@ enum bfa_msgq_cmdq_flags {
BFA_MSGQ_CMDQ_F_DB_UPDATE = 1,
};
+enum cmdq_event;
+
struct bfa_msgq_cmdq {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bfa_msgq_cmdq *s, enum cmdq_event e);
enum bfa_msgq_cmdq_flags flags;
u16 producer_index;
@@ -81,8 +83,10 @@ enum bfa_msgq_rspq_flags {
typedef void (*bfa_msgq_mcfunc_t)(void *cbarg, struct bfi_msgq_mhdr *mhdr);
+enum rspq_event;
+
struct bfa_msgq_rspq {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bfa_msgq_rspq *s, enum rspq_event e);
enum bfa_msgq_rspq_flags flags;
u16 producer_index;
diff --git a/drivers/net/ethernet/brocade/bna/bna_enet.c b/drivers/net/ethernet/brocade/bna/bna_enet.c
index a2c983f56b00..883de0ac8de4 100644
--- a/drivers/net/ethernet/brocade/bna/bna_enet.c
+++ b/drivers/net/ethernet/brocade/bna/bna_enet.c
@@ -1257,7 +1257,7 @@ bna_enet_mtu_get(struct bna_enet *enet)
void
bna_enet_enable(struct bna_enet *enet)
{
- if (enet->fsm != (bfa_sm_t)bna_enet_sm_stopped)
+ if (enet->fsm != bna_enet_sm_stopped)
return;
enet->flags |= BNA_ENET_F_ENABLED;
@@ -1751,12 +1751,12 @@ bna_ioceth_uninit(struct bna_ioceth *ioceth)
void
bna_ioceth_enable(struct bna_ioceth *ioceth)
{
- if (ioceth->fsm == (bfa_fsm_t)bna_ioceth_sm_ready) {
+ if (ioceth->fsm == bna_ioceth_sm_ready) {
bnad_cb_ioceth_ready(ioceth->bna->bnad);
return;
}
- if (ioceth->fsm == (bfa_fsm_t)bna_ioceth_sm_stopped)
+ if (ioceth->fsm == bna_ioceth_sm_stopped)
bfa_fsm_send_event(ioceth, IOCETH_E_ENABLE);
}
diff --git a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
index 2623a0da4682..c05dc7a1c4a1 100644
--- a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
+++ b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
@@ -1956,7 +1956,7 @@ static void
bna_rx_stop(struct bna_rx *rx)
{
rx->rx_flags &= ~BNA_RX_F_ENET_STARTED;
- if (rx->fsm == (bfa_fsm_t) bna_rx_sm_stopped)
+ if (rx->fsm == bna_rx_sm_stopped)
bna_rx_mod_cb_rx_stopped(&rx->bna->rx_mod, rx);
else {
rx->stop_cbfn = bna_rx_mod_cb_rx_stopped;
@@ -2535,7 +2535,7 @@ bna_rx_destroy(struct bna_rx *rx)
void
bna_rx_enable(struct bna_rx *rx)
{
- if (rx->fsm != (bfa_sm_t)bna_rx_sm_stopped)
+ if (rx->fsm != bna_rx_sm_stopped)
return;
rx->rx_flags |= BNA_RX_F_ENABLED;
@@ -3523,7 +3523,7 @@ bna_tx_destroy(struct bna_tx *tx)
void
bna_tx_enable(struct bna_tx *tx)
{
- if (tx->fsm != (bfa_sm_t)bna_tx_sm_stopped)
+ if (tx->fsm != bna_tx_sm_stopped)
return;
tx->flags |= BNA_TX_F_ENABLED;
diff --git a/drivers/net/ethernet/brocade/bna/bna_types.h b/drivers/net/ethernet/brocade/bna/bna_types.h
index 666b6922e24d..a5ebd7110e07 100644
--- a/drivers/net/ethernet/brocade/bna/bna_types.h
+++ b/drivers/net/ethernet/brocade/bna/bna_types.h
@@ -312,8 +312,10 @@ struct bna_attr {
/* IOCEth */
+enum bna_ioceth_event;
+
struct bna_ioceth {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_ioceth *s, enum bna_ioceth_event e);
struct bfa_ioc ioc;
struct bna_attr attr;
@@ -334,8 +336,10 @@ struct bna_pause_config {
enum bna_status rx_pause;
};
+enum bna_enet_event;
+
struct bna_enet {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_enet *s, enum bna_enet_event e);
enum bna_enet_flags flags;
enum bna_enet_type type;
@@ -360,8 +364,10 @@ struct bna_enet {
/* Ethport */
+enum bna_ethport_event;
+
struct bna_ethport {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_ethport *s, enum bna_ethport_event e);
enum bna_ethport_flags flags;
enum bna_link_status link_status;
@@ -454,13 +460,16 @@ struct bna_txq {
};
/* Tx object */
+
+enum bna_tx_event;
+
struct bna_tx {
/* This should be the first one */
struct list_head qe;
int rid;
int hw_id;
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_tx *s, enum bna_tx_event e);
enum bna_tx_flags flags;
enum bna_tx_type type;
@@ -698,8 +707,11 @@ struct bna_rxp {
};
/* RxF structure (hardware Rx Function) */
+
+enum bna_rxf_event;
+
struct bna_rxf {
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_rxf *s, enum bna_rxf_event e);
struct bfa_msgq_cmd_entry msgq_cmd;
union {
@@ -769,13 +781,16 @@ struct bna_rxf {
};
/* Rx object */
+
+enum bna_rx_event;
+
struct bna_rx {
/* This should be the first one */
struct list_head qe;
int rid;
int hw_id;
- bfa_fsm_t fsm;
+ void (*fsm)(struct bna_rx *s, enum bna_rx_event e);
enum bna_rx_type type;
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* [PATCH v2 6/6] staging: ks7010: Avoid clashing function prototypes
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
` (4 preceding siblings ...)
2022-10-27 20:20 ` [PATCH v2 5/6] bna: " Gustavo A. R. Silva
@ 2022-10-27 20:22 ` Gustavo A. R. Silva
2022-10-29 7:20 ` Kees Cook
5 siblings, 1 reply; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-27 20:22 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: linux-staging, linux-kernel, Kees Cook, Gustavo A. R. Silva,
linux-hardening
When built with Control Flow Integrity, function prototypes between
caller and function declaration must match. These mismatches are visible
at compile time with the new -Wcast-function-type-strict in Clang[1].
Fix a total of 27 warnings like these:
drivers/staging/ks7010/ks_wlan_net.c:2415:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_point *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
(iw_handler)ks_wlan_get_firmware_version,/* 3 KS_WLAN_GET_FIRM_VERSION */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The ks_wlan_net Wireless Extension handler callbacks (iw_handler) use a
union for the data argument. Actually use the union and perform explicit
member selection in the function body instead of having a function
prototype mismatch. There are no resulting binary differences
before/after changes.
Link: https://reviews.llvm.org/D134831 [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
Changes in v2:
- None. This patch is new in the series.
drivers/staging/ks7010/ks_wlan_net.c | 184 ++++++++++++++-------------
1 file changed, 94 insertions(+), 90 deletions(-)
diff --git a/drivers/staging/ks7010/ks_wlan_net.c b/drivers/staging/ks7010/ks_wlan_net.c
index 7e8d37c169f0..835fa3637bd8 100644
--- a/drivers/staging/ks7010/ks_wlan_net.c
+++ b/drivers/staging/ks7010/ks_wlan_net.c
@@ -1763,8 +1763,8 @@ static struct iw_statistics *ks_get_wireless_stats(struct net_device *dev)
}
static int ks_wlan_set_stop_request(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -1772,7 +1772,7 @@ static int ks_wlan_set_stop_request(struct net_device *dev,
return -EPERM;
/* for SLEEP MODE */
- if (!(*uwrq))
+ if (!(uwrq->mode))
return -EINVAL;
hostif_sme_enqueue(priv, SME_STOP_REQUEST);
@@ -1786,7 +1786,9 @@ static int ks_wlan_set_mlme(struct net_device *dev,
{
struct ks_wlan_private *priv = netdev_priv(dev);
struct iw_mlme *mlme = (struct iw_mlme *)extra;
- __u32 mode = 1;
+ union iwreq_data uwrq;
+
+ uwrq.mode = 1;
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
@@ -1799,13 +1801,14 @@ static int ks_wlan_set_mlme(struct net_device *dev,
mlme->reason_code == WLAN_REASON_MIC_FAILURE)
return 0;
- return ks_wlan_set_stop_request(dev, NULL, &mode, NULL);
+ return ks_wlan_set_stop_request(dev, NULL, &uwrq, NULL);
}
static int ks_wlan_get_firmware_version(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
+ struct iw_point *dwrq = &uwrq->data;
struct ks_wlan_private *priv = netdev_priv(dev);
dwrq->length = priv->version_size + 1;
@@ -1814,8 +1817,8 @@ static int ks_wlan_get_firmware_version(struct net_device *dev,
}
static int ks_wlan_set_preamble(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -1823,17 +1826,17 @@ static int ks_wlan_set_preamble(struct net_device *dev,
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq != LONG_PREAMBLE && *uwrq != SHORT_PREAMBLE)
+ if (uwrq->mode != LONG_PREAMBLE && uwrq->mode != SHORT_PREAMBLE)
return -EINVAL;
- priv->reg.preamble = *uwrq;
+ priv->reg.preamble = uwrq->mode;
priv->need_commit |= SME_MODE_SET;
return -EINPROGRESS; /* Call commit handler */
}
static int ks_wlan_get_preamble(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -1841,37 +1844,37 @@ static int ks_wlan_get_preamble(struct net_device *dev,
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.preamble;
+ uwrq->mode = priv->reg.preamble;
return 0;
}
static int ks_wlan_set_power_mgmt(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
- if (*uwrq != POWER_MGMT_ACTIVE &&
- *uwrq != POWER_MGMT_SAVE1 &&
- *uwrq != POWER_MGMT_SAVE2)
+ if (uwrq->mode != POWER_MGMT_ACTIVE &&
+ uwrq->mode != POWER_MGMT_SAVE1 &&
+ uwrq->mode != POWER_MGMT_SAVE2)
return -EINVAL;
- if ((*uwrq == POWER_MGMT_SAVE1 || *uwrq == POWER_MGMT_SAVE2) &&
+ if ((uwrq->mode == POWER_MGMT_SAVE1 || uwrq->mode == POWER_MGMT_SAVE2) &&
(priv->reg.operation_mode != MODE_INFRASTRUCTURE))
return -EINVAL;
- priv->reg.power_mgmt = *uwrq;
+ priv->reg.power_mgmt = uwrq->mode;
hostif_sme_enqueue(priv, SME_POW_MNGMT_REQUEST);
return 0;
}
static int ks_wlan_get_power_mgmt(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -1879,13 +1882,13 @@ static int ks_wlan_get_power_mgmt(struct net_device *dev,
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.power_mgmt;
+ uwrq->mode = priv->reg.power_mgmt;
return 0;
}
static int ks_wlan_set_scan_type(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -1893,39 +1896,39 @@ static int ks_wlan_set_scan_type(struct net_device *dev,
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq != ACTIVE_SCAN && *uwrq != PASSIVE_SCAN)
+ if (uwrq->mode != ACTIVE_SCAN && uwrq->mode != PASSIVE_SCAN)
return -EINVAL;
- priv->reg.scan_type = *uwrq;
+ priv->reg.scan_type = uwrq->mode;
return 0;
}
static int ks_wlan_get_scan_type(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.scan_type;
+ uwrq->mode = priv->reg.scan_type;
return 0;
}
static int ks_wlan_set_beacon_lost(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq > BEACON_LOST_COUNT_MAX)
+ if (uwrq->mode > BEACON_LOST_COUNT_MAX)
return -EINVAL;
- priv->reg.beacon_lost_count = *uwrq;
+ priv->reg.beacon_lost_count = uwrq->mode;
if (priv->reg.operation_mode == MODE_INFRASTRUCTURE) {
priv->need_commit |= SME_MODE_SET;
@@ -1936,101 +1939,101 @@ static int ks_wlan_set_beacon_lost(struct net_device *dev,
}
static int ks_wlan_get_beacon_lost(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.beacon_lost_count;
+ uwrq->mode = priv->reg.beacon_lost_count;
return 0;
}
static int ks_wlan_set_phy_type(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
- if (*uwrq != D_11B_ONLY_MODE &&
- *uwrq != D_11G_ONLY_MODE &&
- *uwrq != D_11BG_COMPATIBLE_MODE)
+ if (uwrq->mode != D_11B_ONLY_MODE &&
+ uwrq->mode != D_11G_ONLY_MODE &&
+ uwrq->mode != D_11BG_COMPATIBLE_MODE)
return -EINVAL;
/* for SLEEP MODE */
- priv->reg.phy_type = *uwrq;
+ priv->reg.phy_type = uwrq->mode;
priv->need_commit |= SME_MODE_SET;
return -EINPROGRESS; /* Call commit handler */
}
static int ks_wlan_get_phy_type(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.phy_type;
+ uwrq->mode = priv->reg.phy_type;
return 0;
}
static int ks_wlan_set_cts_mode(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq != CTS_MODE_FALSE && *uwrq != CTS_MODE_TRUE)
+ if (uwrq->mode != CTS_MODE_FALSE && uwrq->mode != CTS_MODE_TRUE)
return -EINVAL;
- priv->reg.cts_mode = (*uwrq == CTS_MODE_FALSE) ? *uwrq :
+ priv->reg.cts_mode = (uwrq->mode == CTS_MODE_FALSE) ? uwrq->mode :
(priv->reg.phy_type == D_11G_ONLY_MODE ||
priv->reg.phy_type == D_11BG_COMPATIBLE_MODE) ?
- *uwrq : !*uwrq;
+ uwrq->mode : !uwrq->mode;
priv->need_commit |= SME_MODE_SET;
return -EINPROGRESS; /* Call commit handler */
}
static int ks_wlan_get_cts_mode(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->reg.cts_mode;
+ uwrq->mode = priv->reg.cts_mode;
return 0;
}
static int ks_wlan_set_sleep_mode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *uwrq, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
- if (*uwrq != SLP_SLEEP &&
- *uwrq != SLP_ACTIVE) {
- netdev_err(dev, "SET_SLEEP_MODE %d error\n", *uwrq);
+ if (uwrq->mode != SLP_SLEEP &&
+ uwrq->mode != SLP_ACTIVE) {
+ netdev_err(dev, "SET_SLEEP_MODE %d error\n", uwrq->mode);
return -EINVAL;
}
- priv->sleep_mode = *uwrq;
+ priv->sleep_mode = uwrq->mode;
netdev_info(dev, "SET_SLEEP_MODE %d\n", priv->sleep_mode);
- if (*uwrq == SLP_SLEEP)
+ if (uwrq->mode == SLP_SLEEP)
hostif_sme_enqueue(priv, SME_STOP_REQUEST);
hostif_sme_enqueue(priv, SME_SLEEP_REQUEST);
@@ -2040,52 +2043,53 @@ static int ks_wlan_set_sleep_mode(struct net_device *dev,
static int ks_wlan_get_sleep_mode(struct net_device *dev,
struct iw_request_info *info,
- __u32 *uwrq, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
- *uwrq = priv->sleep_mode;
+ uwrq->mode = priv->sleep_mode;
return 0;
}
static int ks_wlan_set_wps_enable(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq != 0 && *uwrq != 1)
+ if (uwrq->mode != 0 && uwrq->mode != 1)
return -EINVAL;
- priv->wps.wps_enabled = *uwrq;
+ priv->wps.wps_enabled = uwrq->mode;
hostif_sme_enqueue(priv, SME_WPS_ENABLE_REQUEST);
return 0;
}
static int ks_wlan_get_wps_enable(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->wps.wps_enabled;
- netdev_info(dev, "return=%d\n", *uwrq);
+ uwrq->mode = priv->wps.wps_enabled;
+ netdev_info(dev, "return=%d\n", uwrq->mode);
return 0;
}
static int ks_wlan_set_wps_probe_req(struct net_device *dev,
struct iw_request_info *info,
- struct iw_point *dwrq, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
+ struct iw_point *dwrq = &uwrq->data;
u8 *p = extra;
unsigned char len;
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -2114,76 +2118,76 @@ static int ks_wlan_set_wps_probe_req(struct net_device *dev,
}
static int ks_wlan_set_tx_gain(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq > 0xFF)
+ if (uwrq->mode > 0xFF)
return -EINVAL;
- priv->gain.tx_gain = (u8)*uwrq;
+ priv->gain.tx_gain = (u8)uwrq->mode;
priv->gain.tx_mode = (priv->gain.tx_gain < 0xFF) ? 1 : 0;
hostif_sme_enqueue(priv, SME_SET_GAIN);
return 0;
}
static int ks_wlan_get_tx_gain(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->gain.tx_gain;
+ uwrq->mode = priv->gain.tx_gain;
hostif_sme_enqueue(priv, SME_GET_GAIN);
return 0;
}
static int ks_wlan_set_rx_gain(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- if (*uwrq > 0xFF)
+ if (uwrq->mode > 0xFF)
return -EINVAL;
- priv->gain.rx_gain = (u8)*uwrq;
+ priv->gain.rx_gain = (u8)uwrq->mode;
priv->gain.rx_mode = (priv->gain.rx_gain < 0xFF) ? 1 : 0;
hostif_sme_enqueue(priv, SME_SET_GAIN);
return 0;
}
static int ks_wlan_get_rx_gain(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
if (priv->sleep_mode == SLP_SLEEP)
return -EPERM;
/* for SLEEP MODE */
- *uwrq = priv->gain.rx_gain;
+ uwrq->mode = priv->gain.rx_gain;
hostif_sme_enqueue(priv, SME_GET_GAIN);
return 0;
}
static int ks_wlan_get_eeprom_cksum(struct net_device *dev,
- struct iw_request_info *info, __u32 *uwrq,
- char *extra)
+ struct iw_request_info *info,
+ union iwreq_data *uwrq, char *extra)
{
struct ks_wlan_private *priv = netdev_priv(dev);
- *uwrq = priv->eeprom_checksum;
+ uwrq->mode = priv->eeprom_checksum;
return 0;
}
@@ -2302,7 +2306,7 @@ static void print_hif_event(struct net_device *dev, int event)
/* get host command history */
static int ks_wlan_hostt(struct net_device *dev, struct iw_request_info *info,
- __u32 *uwrq, char *extra)
+ union iwreq_data *uwrq, char *extra)
{
int i, event;
struct ks_wlan_private *priv = netdev_priv(dev);
@@ -2461,7 +2465,7 @@ static int ks_wlan_netdev_ioctl(struct net_device *dev, struct ifreq *rq,
switch (cmd) {
case SIOCIWFIRSTPRIV + 20: /* KS_WLAN_SET_STOP_REQ */
- ret = ks_wlan_set_stop_request(dev, NULL, &wrq->u.mode, NULL);
+ ret = ks_wlan_set_stop_request(dev, NULL, &wrq->u, NULL);
break;
// All other calls are currently unsupported
default:
--
2.34.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* Re: [PATCH v2 1/6] cfg80211: Avoid clashing function prototypes
2022-10-27 20:17 ` [PATCH v2 1/6] cfg80211: " Gustavo A. R. Silva
@ 2022-10-28 8:22 ` Johannes Berg
2022-10-31 17:01 ` Gustavo A. R. Silva
2022-10-31 21:03 ` Gustavo A. R. Silva
0 siblings, 2 replies; 17+ messages in thread
From: Johannes Berg @ 2022-10-28 8:22 UTC (permalink / raw)
To: Gustavo A. R. Silva, Stanislav Yakovlev, Kalle Valo,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook, linux-hardening
Hm.
If you're splitting out per driver,
> +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c
> @@ -9870,7 +9870,7 @@ static int ipw_wx_sw_reset(struct net_device *dev,
>
> /* Rebase the WE IOCTLs to zero for the handler array */
> static iw_handler ipw_wx_handlers[] = {
> - IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname),
> + IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
I can see how this (and similar) still belongs into this patch since
it's related to the cfg80211 change, but
> +++ b/drivers/net/wireless/intersil/orinoco/wext.c
> @@ -154,9 +154,10 @@ static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev)
>
> static int orinoco_ioctl_setwap(struct net_device *dev,
> struct iw_request_info *info,
> - struct sockaddr *ap_addr,
> + union iwreq_data *wrqu,
> char *extra)
> {
> + struct sockaddr *ap_addr = &wrqu->ap_addr;
why this (and similar) too?
The same changes in hostap, zd1201 and airo you did split out?
johannes
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 3/6] zd1201: Avoid clashing function prototypes
2022-10-27 20:19 ` [PATCH v2 3/6] zd1201: " Gustavo A. R. Silva
@ 2022-10-29 7:08 ` Kees Cook
0 siblings, 0 replies; 17+ messages in thread
From: Kees Cook @ 2022-10-29 7:08 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: Kalle Valo, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, netdev, linux-wireless, linux-kernel,
linux-hardening
On Thu, Oct 27, 2022 at 03:19:19PM -0500, Gustavo A. R. Silva wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
>
> Fix a total of 30 warnings like these:
>
> ../drivers/net/wireless/zydas/zd1201.c:1560:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_freq *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
> (iw_handler) zd1201_set_freq, /* SIOCSIWFREQ */
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The zd1201 Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch.There are no resulting binary differences
> before/after changes.
>
> Link: https://github.com/KSPP/linux/issues/233
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This looks right to me. I've got half a cocci script that spits out
something close says interdiff. :)
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 5/6] bna: Avoid clashing function prototypes
2022-10-27 20:20 ` [PATCH v2 5/6] bna: " Gustavo A. R. Silva
@ 2022-10-29 7:12 ` Kees Cook
2022-10-31 17:13 ` Gustavo A. R. Silva
2022-10-31 21:04 ` Gustavo A. R. Silva
0 siblings, 2 replies; 17+ messages in thread
From: Kees Cook @ 2022-10-29 7:12 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: Sudarsana Kalluru, GR-Linux-NIC-Dev, Rasesh Mody,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
netdev, linux-kernel, linux-hardening
On Thu, Oct 27, 2022 at 03:20:47PM -0500, Gustavo A. R. Silva wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
>
> Fix a total of 227 warnings like these:
>
> drivers/net/ethernet/brocade/bna/bna_enet.c:519:3: warning: cast from 'void (*)(struct bna_ethport *, enum bna_ethport_event)' to 'bfa_fsm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Wcast-function-type-strict]
> bfa_fsm_set_state(ethport, bna_ethport_sm_down);
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The bna state machine code heavily overloads its state machine functions,
> so these have been separated into their own sets of structs, enums,
> typedefs, and helper functions. There are almost zero binary code changes,
> all seem to be related to header file line numbers changing, or the
> addition of the new stats helper.
This looks like it borrowed from
https://lore.kernel.org/linux-hardening/20220929230334.2109344-1-keescook@chromium.org/
Nice to get a couple hundred more fixed. :)
> [1] https://reviews.llvm.org/D134831
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
> ---
> Changes in v2:
> - None. This patch is new in the series.
This is relatively stand-alone (not an iw_handler patch), so it could
also go separately too.
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 6/6] staging: ks7010: Avoid clashing function prototypes
2022-10-27 20:22 ` [PATCH v2 6/6] staging: ks7010: " Gustavo A. R. Silva
@ 2022-10-29 7:20 ` Kees Cook
0 siblings, 0 replies; 17+ messages in thread
From: Kees Cook @ 2022-10-29 7:20 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: Greg Kroah-Hartman, linux-staging, linux-kernel, linux-hardening
On Thu, Oct 27, 2022 at 03:22:46PM -0500, Gustavo A. R. Silva wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
>
> Fix a total of 27 warnings like these:
>
> drivers/staging/ks7010/ks_wlan_net.c:2415:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, struct iw_point *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
> (iw_handler)ks_wlan_get_firmware_version,/* 3 KS_WLAN_GET_FIRM_VERSION */
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The ks_wlan_net Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch. There are no resulting binary differences
> before/after changes.
>
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
> ---
> Changes in v2:
> - None. This patch is new in the series.
>
> drivers/staging/ks7010/ks_wlan_net.c | 184 ++++++++++++++-------------
I think the casts in ks_wlan_private_handler can be removed, too?
--
Kees Cook
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 2/6] hostap: Avoid clashing function prototypes
2022-10-27 20:18 ` [PATCH v2 2/6] hostap: " Gustavo A. R. Silva
@ 2022-10-29 7:26 ` Kees Cook
2022-11-01 9:36 ` Kalle Valo
1 sibling, 0 replies; 17+ messages in thread
From: Kees Cook @ 2022-10-29 7:26 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: Jouni Malinen, Kalle Valo, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, netdev, linux-wireless,
linux-kernel, linux-hardening
On Thu, Oct 27, 2022 at 03:18:37PM -0500, Gustavo A. R. Silva wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
>
> Fix a total of 42 warnings like these:
>
> ../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
> (iw_handler) prism2_get_name, /* SIOCGIWNAME */
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The hostap Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch. There are no resulting binary differences
> before/after changes.
>
> Link: https://github.com/KSPP/linux/issues/235
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Looks like prism2_private_handler contents could be uncast? Otherwise,
yeah, looks good.
--
Kees Cook
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 1/6] cfg80211: Avoid clashing function prototypes
2022-10-28 8:22 ` Johannes Berg
@ 2022-10-31 17:01 ` Gustavo A. R. Silva
2022-10-31 21:03 ` Gustavo A. R. Silva
1 sibling, 0 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-31 17:01 UTC (permalink / raw)
To: Johannes Berg, Gustavo A. R. Silva, Stanislav Yakovlev,
Kalle Valo, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni
Cc: netdev, linux-wireless, linux-kernel, Kees Cook, linux-hardening
On 10/28/22 03:22, Johannes Berg wrote:
> Hm.
>
> If you're splitting out per driver,
>
>> +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c
>> @@ -9870,7 +9870,7 @@ static int ipw_wx_sw_reset(struct net_device *dev,
>>
>> /* Rebase the WE IOCTLs to zero for the handler array */
>> static iw_handler ipw_wx_handlers[] = {
>> - IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname),
>> + IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
>
> I can see how this (and similar) still belongs into this patch since
> it's related to the cfg80211 change, but
>
>> +++ b/drivers/net/wireless/intersil/orinoco/wext.c
>> @@ -154,9 +154,10 @@ static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev)
>>
>> static int orinoco_ioctl_setwap(struct net_device *dev,
>> struct iw_request_info *info,
>> - struct sockaddr *ap_addr,
>> + union iwreq_data *wrqu,
>> char *extra)
>> {
>> + struct sockaddr *ap_addr = &wrqu->ap_addr;
>
> why this (and similar) too?
mmh... yeah; orinoco should be a separate patch. :)
Thanks
--
Gustavo
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 5/6] bna: Avoid clashing function prototypes
2022-10-29 7:12 ` Kees Cook
@ 2022-10-31 17:13 ` Gustavo A. R. Silva
2022-10-31 21:04 ` Gustavo A. R. Silva
1 sibling, 0 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-31 17:13 UTC (permalink / raw)
To: Kees Cook, Gustavo A. R. Silva
Cc: Sudarsana Kalluru, GR-Linux-NIC-Dev, Rasesh Mody,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
netdev, linux-kernel, linux-hardening
On 10/29/22 02:12, Kees Cook wrote:
> On Thu, Oct 27, 2022 at 03:20:47PM -0500, Gustavo A. R. Silva wrote:
>> When built with Control Flow Integrity, function prototypes between
>> caller and function declaration must match. These mismatches are visible
>> at compile time with the new -Wcast-function-type-strict in Clang[1].
>>
>> Fix a total of 227 warnings like these:
>>
>> drivers/net/ethernet/brocade/bna/bna_enet.c:519:3: warning: cast from 'void (*)(struct bna_ethport *, enum bna_ethport_event)' to 'bfa_fsm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Wcast-function-type-strict]
>> bfa_fsm_set_state(ethport, bna_ethport_sm_down);
>> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> The bna state machine code heavily overloads its state machine functions,
>> so these have been separated into their own sets of structs, enums,
>> typedefs, and helper functions. There are almost zero binary code changes,
>> all seem to be related to header file line numbers changing, or the
>> addition of the new stats helper.
>
> This looks like it borrowed from
> https://lore.kernel.org/linux-hardening/20220929230334.2109344-1-keescook@chromium.org/
> Nice to get a couple hundred more fixed. :)
Yep; you're right. That's exactly the patch I was staring at
while doing these changes. :)
>
>> [1] https://reviews.llvm.org/D134831
>> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
>> ---
>> Changes in v2:
>> - None. This patch is new in the series.
>
> This is relatively stand-alone (not an iw_handler patch), so it could
> also go separately too.
My criteria here was that all these patches avoid clashing function
prototypes. So, they could be put together into a series, regardless
if they are "iw_handler" related patches.
> Reviewed-by: Kees Cook <keescook@chromium.org>
Thanks!
--
Gustavo
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 1/6] cfg80211: Avoid clashing function prototypes
2022-10-28 8:22 ` Johannes Berg
2022-10-31 17:01 ` Gustavo A. R. Silva
@ 2022-10-31 21:03 ` Gustavo A. R. Silva
1 sibling, 0 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-31 21:03 UTC (permalink / raw)
To: Johannes Berg
Cc: Stanislav Yakovlev, Kalle Valo, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, netdev, linux-wireless,
linux-kernel, Kees Cook, linux-hardening
On Fri, Oct 28, 2022 at 10:22:47AM +0200, Johannes Berg wrote:
> Hm.
>
> If you're splitting out per driver,
>
> > +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c
> > @@ -9870,7 +9870,7 @@ static int ipw_wx_sw_reset(struct net_device *dev,
> >
> > /* Rebase the WE IOCTLs to zero for the handler array */
> > static iw_handler ipw_wx_handlers[] = {
> > - IW_HANDLER(SIOCGIWNAME, (iw_handler)cfg80211_wext_giwname),
> > + IW_HANDLER(SIOCGIWNAME, cfg80211_wext_giwname),
>
> I can see how this (and similar) still belongs into this patch since
> it's related to the cfg80211 change, but
>
> > +++ b/drivers/net/wireless/intersil/orinoco/wext.c
> > @@ -154,9 +154,10 @@ static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev)
> >
> > static int orinoco_ioctl_setwap(struct net_device *dev,
> > struct iw_request_info *info,
> > - struct sockaddr *ap_addr,
> > + union iwreq_data *wrqu,
> > char *extra)
> > {
> > + struct sockaddr *ap_addr = &wrqu->ap_addr;
>
> why this (and similar) too?
mmh... yeah; orinoco should be a separate patch. :)
Thanks
--
Gustavo
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 5/6] bna: Avoid clashing function prototypes
2022-10-29 7:12 ` Kees Cook
2022-10-31 17:13 ` Gustavo A. R. Silva
@ 2022-10-31 21:04 ` Gustavo A. R. Silva
1 sibling, 0 replies; 17+ messages in thread
From: Gustavo A. R. Silva @ 2022-10-31 21:04 UTC (permalink / raw)
To: Kees Cook
Cc: Sudarsana Kalluru, GR-Linux-NIC-Dev, Rasesh Mody,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
netdev, linux-kernel, linux-hardening
On Sat, Oct 29, 2022 at 12:12:26AM -0700, Kees Cook wrote:
> On Thu, Oct 27, 2022 at 03:20:47PM -0500, Gustavo A. R. Silva wrote:
> > When built with Control Flow Integrity, function prototypes between
> > caller and function declaration must match. These mismatches are visible
> > at compile time with the new -Wcast-function-type-strict in Clang[1].
> >
> > Fix a total of 227 warnings like these:
> >
> > drivers/net/ethernet/brocade/bna/bna_enet.c:519:3: warning: cast from 'void (*)(struct bna_ethport *, enum bna_ethport_event)' to 'bfa_fsm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Wcast-function-type-strict]
> > bfa_fsm_set_state(ethport, bna_ethport_sm_down);
> > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > The bna state machine code heavily overloads its state machine functions,
> > so these have been separated into their own sets of structs, enums,
> > typedefs, and helper functions. There are almost zero binary code changes,
> > all seem to be related to header file line numbers changing, or the
> > addition of the new stats helper.
>
> This looks like it borrowed from
> https://lore.kernel.org/linux-hardening/20220929230334.2109344-1-keescook@chromium.org/
> Nice to get a couple hundred more fixed. :)
Yep; you're right. That's exactly the patch I was staring at
while doing these changes. :)
>
> > [1] https://reviews.llvm.org/D134831
> > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
> > ---
> > Changes in v2:
> > - None. This patch is new in the series.
>
> This is relatively stand-alone (not an iw_handler patch), so it could
> also go separately too.
My criteria here was that all these patches avoid clashing function
prototypes. So, they could be put together into a series, regardless
if they are "iw_handler" related patches.
> Reviewed-by: Kees Cook <keescook@chromium.org>
Thanks!
--
Gustavo
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2 2/6] hostap: Avoid clashing function prototypes
2022-10-27 20:18 ` [PATCH v2 2/6] hostap: " Gustavo A. R. Silva
2022-10-29 7:26 ` Kees Cook
@ 2022-11-01 9:36 ` Kalle Valo
1 sibling, 0 replies; 17+ messages in thread
From: Kalle Valo @ 2022-11-01 9:36 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: Jouni Malinen, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, netdev, linux-wireless, linux-kernel, Kees Cook,
Gustavo A. R. Silva, linux-hardening
"Gustavo A. R. Silva" <gustavoars@kernel.org> wrote:
> When built with Control Flow Integrity, function prototypes between
> caller and function declaration must match. These mismatches are visible
> at compile time with the new -Wcast-function-type-strict in Clang[1].
>
> Fix a total of 42 warnings like these:
>
> ../drivers/net/wireless/intersil/hostap/hostap_ioctl.c:3868:2: warning: cast from 'int (*)(struct net_device *, struct iw_request_info *, char *, char *)' to 'iw_handler' (aka 'int (*)(struct net_device *, struct iw_request_info *, union iwreq_data *, char *)') converts to incompatible function type [-Wcast-function-type-strict]
> (iw_handler) prism2_get_name, /* SIOCGIWNAME */
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The hostap Wireless Extension handler callbacks (iw_handler) use a
> union for the data argument. Actually use the union and perform explicit
> member selection in the function body instead of having a function
> prototype mismatch. There are no resulting binary differences
> before/after changes.
>
> Link: https://github.com/KSPP/linux/issues/235
> Link: https://reviews.llvm.org/D134831 [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Please add "wifi: " to all wireless patches, for example this one should be:
wifi: hostap: Avoid clashing function prototypes
--
https://patchwork.kernel.org/project/linux-wireless/patch/8388b5ed9e729eb9dadec875a7576219e6d61223.1666894751.git.gustavoars@kernel.org/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 17+ messages in thread
end of thread, other threads:[~2022-11-02 5:23 UTC | newest]
Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-10-27 20:16 [PATCH v2 0/6] Avoid clashing function prototypes Gustavo A. R. Silva
2022-10-27 20:17 ` [PATCH v2 1/6] cfg80211: " Gustavo A. R. Silva
2022-10-28 8:22 ` Johannes Berg
2022-10-31 17:01 ` Gustavo A. R. Silva
2022-10-31 21:03 ` Gustavo A. R. Silva
2022-10-27 20:18 ` [PATCH v2 2/6] hostap: " Gustavo A. R. Silva
2022-10-29 7:26 ` Kees Cook
2022-11-01 9:36 ` Kalle Valo
2022-10-27 20:19 ` [PATCH v2 3/6] zd1201: " Gustavo A. R. Silva
2022-10-29 7:08 ` Kees Cook
2022-10-27 20:20 ` [PATCH v2 4/6] airo: " Gustavo A. R. Silva
2022-10-27 20:20 ` [PATCH v2 5/6] bna: " Gustavo A. R. Silva
2022-10-29 7:12 ` Kees Cook
2022-10-31 17:13 ` Gustavo A. R. Silva
2022-10-31 21:04 ` Gustavo A. R. Silva
2022-10-27 20:22 ` [PATCH v2 6/6] staging: ks7010: " Gustavo A. R. Silva
2022-10-29 7:20 ` Kees Cook
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