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cfg80211: use proper allocation flags

Browse source 
Instead of hardcoding GFP_ATOMIC everywhere, add a
new function parameter that gets the flags from the
caller. Obviously then I need to update all callers
(all of them in mac80211), and it turns out that now
it's ok to use GFP_KERNEL in almost all places.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-07-01 21:26:47 +02:00 committed by John W. Linville
parent dad8233021
commit e6d6e3420d
9 changed files with 91 additions and 66 deletions
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21
include/net/cfg80211.h
View file

@ -1572,64 +1572,70 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss);
* @dev: network device
* @buf: authentication frame (header + body)
* @len: length of the frame data
* @gfp: allocation flags
*
* This function is called whenever an authentication has been processed in
* station mode. The driver is required to call either this function or
* cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth()
* call.
*/
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp);
/**
* cfg80211_send_auth_timeout - notification of timed out authentication
* @dev: network device
* @addr: The MAC address of the device with which the authentication timed out
* @gfp: allocation flags
*/
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp);
/**
* cfg80211_send_rx_assoc - notification of processed association
* @dev: network device
* @buf: (re)association response frame (header + body)
* @len: length of the frame data
* @gfp: allocation flags
*
* This function is called whenever a (re)association response has been
* processed in station mode. The driver is required to call either this
* function or cfg80211_send_assoc_timeout() to indicate the result of
* cfg80211_ops::assoc() call.
*/
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len);
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp);
/**
* cfg80211_send_assoc_timeout - notification of timed out association
* @dev: network device
* @addr: The MAC address of the device with which the association timed out
* @gfp: allocation flags
*/
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr);
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp);
/**
* cfg80211_send_deauth - notification of processed deauthentication
* @dev: network device
* @buf: deauthentication frame (header + body)
* @len: length of the frame data
* @gfp: allocation flags
*
* This function is called whenever deauthentication has been processed in
* station mode. This includes both received deauthentication frames and
* locally generated ones.
*/
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len);
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp);
/**
* cfg80211_send_disassoc - notification of processed disassociation
* @dev: network device
* @buf: disassociation response frame (header + body)
* @len: length of the frame data
* @gfp: allocation flags
*
* This function is called whenever disassociation has been processed in
* station mode. This includes both received disassociation frames and locally
* generated ones.
*/
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len);
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp);
/**
* cfg80211_hold_bss - exclude bss from expiration
@ -1655,6 +1661,7 @@ void cfg80211_unhold_bss(struct cfg80211_bss *bss);
* @key_type: The key type that the received frame used
* @key_id: Key identifier (0..3)
* @tsc: The TSC value of the frame that generated the MIC failure (6 octets)
* @gfp: allocation flags
*
* This function is called whenever the local MAC detects a MIC failure in a
* received frame. This matches with MLME-MICHAELMICFAILURE.indication()
@ -1662,7 +1669,7 @@ void cfg80211_unhold_bss(struct cfg80211_bss *bss);
*/
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc);
const u8 *tsc, gfp_t gfp);
/**
* cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS

5
net/mac80211/event.c
View file

@ -16,11 +16,12 @@
* driver or is still in the frame), it should provide that information.
*/
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr, const u8 *tsc)
struct ieee80211_hdr *hdr, const u8 *tsc,
gfp_t gfp)
{
cfg80211_michael_mic_failure(sdata->dev, hdr->addr2,
(hdr->addr1[0] & 0x01) ?
NL80211_KEYTYPE_GROUP :
NL80211_KEYTYPE_PAIRWISE,
keyidx, tsc);
keyidx, tsc, gfp);
}

3
net/mac80211/ieee80211_i.h
View file

@ -1088,7 +1088,8 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr, const u8 *tsc);
struct ieee80211_hdr *hdr, const u8 *tsc,
gfp_t gfp);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);

30
net/mac80211/mlme.c
View file

@ -419,9 +419,11 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
if (stype == IEEE80211_STYPE_DEAUTH)
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len);
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len,
GFP_KERNEL);
else
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len);
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len,
GFP_KERNEL);
ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED);
}
@ -1006,7 +1008,8 @@ static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata)
sdata->dev->name, ifmgd->bssid);
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_recalc_idle(local);
cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid);
cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid,
GFP_KERNEL);
/*
* Most likely AP is not in the range so remove the
@ -1055,7 +1058,8 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata)
sdata->dev->name, ifmgd->bssid);
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_recalc_idle(local);
cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid);
cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid,
GFP_KERNEL);
ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
sdata->local->hw.conf.channel->center_freq,
ifmgd->ssid, ifmgd->ssid_len);
@ -1243,7 +1247,8 @@ static void ieee80211_associate(struct ieee80211_sub_if_data *sdata)
sdata->dev->name, ifmgd->bssid);
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_recalc_idle(local);
cfg80211_send_assoc_timeout(sdata->dev, ifmgd->bssid);
cfg80211_send_assoc_timeout(sdata->dev, ifmgd->bssid,
GFP_KERNEL);
ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
sdata->local->hw.conf.channel->center_freq,
ifmgd->ssid, ifmgd->ssid_len);
@ -1517,12 +1522,14 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
case WLAN_AUTH_LEAP:
case WLAN_AUTH_FT:
ieee80211_auth_completed(sdata);
cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len,
GFP_KERNEL);
break;
case WLAN_AUTH_SHARED_KEY:
if (ifmgd->auth_transaction == 4) {
ieee80211_auth_completed(sdata);
cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len,
GFP_KERNEL);
} else
ieee80211_auth_challenge(sdata, mgmt, len);
break;
@ -1560,7 +1567,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, true, false, 0);
ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED;
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len, GFP_KERNEL);
}
@ -1591,7 +1598,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
}
ieee80211_set_disassoc(sdata, false, false, reason_code);
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len, GFP_KERNEL);
}
@ -1660,7 +1667,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
* association next time. This works around some broken APs
* which do not correctly reject reassociation requests. */
ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len,
GFP_KERNEL);
if (ifmgd->flags & IEEE80211_STA_EXT_SME) {
/* Wait for SME to decide what to do next */
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
@ -1823,7 +1831,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
ifmgd->last_beacon = jiffies;
ieee80211_associated(sdata);
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len, GFP_KERNEL);
}

3
net/mac80211/rx.c
View file

@ -1863,7 +1863,8 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
!ieee80211_is_auth(hdr->frame_control))
goto ignore;
mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL);
mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL,
GFP_ATOMIC);
ignore:
dev_kfree_skb(rx->skb);
rx->skb = NULL;

3
net/mac80211/wpa.c
View file

@ -122,7 +122,8 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
return RX_DROP_UNUSABLE;
mac80211_ev_michael_mic_failure(rx->sdata, rx->key->conf.keyidx,
(void *) skb->data, NULL);
(void *) skb->data, NULL,
GFP_ATOMIC);
return RX_DROP_UNUSABLE;
}

30
net/wireless/mlme.c
View file

@ -12,35 +12,35 @@
#include "core.h"
#include "nl80211.h"
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_rx_auth(rdev, dev, buf, len);
nl80211_send_rx_auth(rdev, dev, buf, len, gfp);
}
EXPORT_SYMBOL(cfg80211_send_rx_auth);
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_rx_assoc(rdev, dev, buf, len);
nl80211_send_rx_assoc(rdev, dev, buf, len, gfp);
}
EXPORT_SYMBOL(cfg80211_send_rx_assoc);
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_deauth(rdev, dev, buf, len);
nl80211_send_deauth(rdev, dev, buf, len, gfp);
}
EXPORT_SYMBOL(cfg80211_send_deauth);
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_disassoc(rdev, dev, buf, len);
nl80211_send_disassoc(rdev, dev, buf, len, gfp);
}
EXPORT_SYMBOL(cfg80211_send_disassoc);
@ -53,33 +53,33 @@ static void cfg80211_wext_disconnected(struct net_device *dev)
#endif
}
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_auth_timeout(rdev, dev, addr);
nl80211_send_auth_timeout(rdev, dev, addr, gfp);
cfg80211_wext_disconnected(dev);
}
EXPORT_SYMBOL(cfg80211_send_auth_timeout);
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
nl80211_send_assoc_timeout(rdev, dev, addr);
nl80211_send_assoc_timeout(rdev, dev, addr, gfp);
cfg80211_wext_disconnected(dev);
}
EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc)
const u8 *tsc, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
#ifdef CONFIG_WIRELESS_EXT
union iwreq_data wrqu;
char *buf = kmalloc(128, GFP_ATOMIC);
char *buf = kmalloc(128, gfp);
if (buf) {
sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
@ -93,6 +93,6 @@ void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
}
#endif
nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc);
nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
}
EXPORT_SYMBOL(cfg80211_michael_mic_failure);

48
net/wireless/nl80211.c
View file

@ -3832,12 +3832,12 @@ nla_put_failure:
static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len,
enum nl80211_commands cmd)
enum nl80211_commands cmd, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
@ -3856,7 +3856,7 @@ static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
return;
}
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
@ -3865,42 +3865,45 @@ static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
}
void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf, size_t len)
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_AUTHENTICATE);
NL80211_CMD_AUTHENTICATE, gfp);
}
void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len)
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_ASSOCIATE, gfp);
}
void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf, size_t len)
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DEAUTHENTICATE);
NL80211_CMD_DEAUTHENTICATE, gfp);
}
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len)
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DISASSOCIATE);
NL80211_CMD_DISASSOCIATE, gfp);
}
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int cmd,
const u8 *addr)
const u8 *addr, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
@ -3920,7 +3923,7 @@ static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
return;
}
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
@ -3929,16 +3932,19 @@ static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
}
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr)
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
addr);
addr, gfp);
}
void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr)
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
addr, gfp);
}
void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
@ -3978,12 +3984,12 @@ void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc)
const u8 *tsc, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
@ -4007,7 +4013,7 @@ void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
return;
}
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:

14
net/wireless/nl80211.h
View file

@ -15,27 +15,27 @@ void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
void nl80211_send_reg_change_event(struct regulatory_request *request);
void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len);
const u8 *buf, size_t len, gfp_t gfp);
void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len);
const u8 *buf, size_t len, gfp_t gfp);
void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len);
const u8 *buf, size_t len, gfp_t gfp);
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len);
const u8 *buf, size_t len, gfp_t gfp);
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *addr);
const u8 *addr, gfp_t gfp);
void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *addr);
const u8 *addr, gfp_t gfp);
void
nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
enum nl80211_key_type key_type,
int key_id, const u8 *tsc);
int key_id, const u8 *tsc, gfp_t gfp);
void
nl80211_send_beacon_hint_event(struct wiphy *wiphy,