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Revert "nl80211: add src and dst addr attributes for control port tx/rx"

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This reverts commit 8c3ed7aa2b.

As Jouni points out, there's really no need for this, since the
RSN pre-authentication frames are normal data frames, not port
control frames (locally).

We can still revert this now since it hasn't actually gone beyond
-next.

Fixes: 8c3ed7aa2b ("nl80211: add src and dst addr attributes for control port tx/rx")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200224101910.b746e263287a.I9eb15d6895515179d50964dec3550c9dc784bb93@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2020-02-24 10:19:12 +01:00
parent 8079e4fee5
commit 8d74a623cc
7 changed files with 21 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/net/cfg80211.h
View File

@ -3974,8 +3974,7 @@ struct cfg80211_ops {
int (*tx_control_port)(struct wiphy *wiphy,
struct net_device *dev,
const u8 *buf, size_t len,
const u8 *dest, const u8 *src,
const __be16 proto,
const u8 *dest, const __be16 proto,
const bool noencrypt);
int (*get_ftm_responder_stats)(struct wiphy *wiphy,

16
include/uapi/linux/nl80211.h
View File

@ -1039,14 +1039,11 @@
* a control port frame and as a notification that a control port frame
* has been received. %NL80211_ATTR_FRAME is used to specify the
* frame contents. The frame is the raw EAPoL data, without ethernet or
* 802.11 headers. An optional %NL80211_ATTR_SRC_MAC can be used to send
* pre-auth frames to STAs on behalf of other APs.
* 802.11 headers.
* When used as an event indication %NL80211_ATTR_CONTROL_PORT_ETHERTYPE,
* %NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT and %NL80211_ATTR_MAC are added
* indicating the protocol type of the received frame; whether the frame
* was received unencrypted and the MAC address of the peer respectively.
* %NL80211_ATTR_DST_MAC can be used to forward pre-auth frames in
* userspace while using AP mode.
*
* @NL80211_CMD_RELOAD_REGDB: Request that the regdb firmware file is reloaded.
*
@ -2412,9 +2409,6 @@ enum nl80211_commands {
* %NL80211_ATTR_AKM_SUITES are default capabilities if AKM suites not
* advertised for a specific interface type.
*
* @NL80211_ATTR_SRC_MAC: MAC address used in control port over nl80211 transmit
* @NL80211_ATTR_DST_MAC: MAC address used in control port over nl80211 receive
*
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@ -2883,9 +2877,6 @@ enum nl80211_attrs {
NL80211_ATTR_IFTYPE_AKM_SUITES,
NL80211_ATTR_SRC_MAC,
NL80211_ATTR_DST_MAC,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@ -5548,10 +5539,6 @@ enum nl80211_feature_flags {
* feature, which prevents bufferbloat by using the expected transmission
* time to limit the amount of data buffered in the hardware.
*
* @NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_MAC_ADDRS: The driver
* can use src and dst MAC addresses with control port over nl80211 rx
* and tx operations.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@ -5599,7 +5586,6 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_SAE_OFFLOAD,
NL80211_EXT_FEATURE_VLAN_OFFLOAD,
NL80211_EXT_FEATURE_AQL,
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_MAC_ADDRS,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,

3
net/mac80211/ieee80211_i.h
View File

@ -1792,8 +1792,7 @@ void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
void ieee80211_clear_fast_xmit(struct sta_info *sta);
int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len,
const u8 *dest, const u8 *src, __be16 proto,
bool unencrypted);
const u8 *dest, __be16 proto, bool unencrypted);
int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len);

3
net/mac80211/tx.c
View File

@ -5283,8 +5283,7 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len,
const u8 *dest, const u8 *src, __be16 proto,
bool unencrypted)
const u8 *dest, __be16 proto, bool unencrypted)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;

18
net/wireless/nl80211.c
View File

@ -634,8 +634,6 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
[NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
[NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
[NL80211_ATTR_SRC_MAC] = NLA_POLICY_ETH_ADDR,
[NL80211_ATTR_DST_MAC] = NLA_POLICY_ETH_ADDR,
};
/* policy for the key attributes */
@ -13698,7 +13696,6 @@ static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
const u8 *buf;
size_t len;
u8 *dest;
u8 src[ETH_ALEN];
u16 proto;
bool noencrypt;
int err;
@ -13736,13 +13733,6 @@ static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
goto out;
}
/* copy src address under wdev_lock, as we may copy wdev_address */
if (info->attrs[NL80211_ATTR_SRC_MAC])
ether_addr_copy(src,
nla_data(info->attrs[NL80211_ATTR_SRC_MAC]));
else
ether_addr_copy(src, wdev_address(wdev));
wdev_unlock(wdev);
buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
@ -13753,7 +13743,7 @@ static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
return rdev_tx_control_port(rdev, dev, buf, len,
dest, src, cpu_to_be16(proto), noencrypt);
dest, cpu_to_be16(proto), noencrypt);
out:
wdev_unlock(wdev);
@ -16010,8 +16000,7 @@ static int __nl80211_rx_control_port(struct net_device *dev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct ethhdr *ehdr = eth_hdr(skb);
const u8 *daddr = ehdr->h_dest;
const u8 *saddr = ehdr->h_source;
const u8 *addr = ehdr->h_source;
u16 proto = be16_to_cpu(skb->protocol);
struct sk_buff *msg;
void *hdr;
@ -16036,8 +16025,7 @@ static int __nl80211_rx_control_port(struct net_device *dev,
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, saddr) ||
nla_put(msg, NL80211_ATTR_DST_MAC, ETH_ALEN, daddr) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
(unencrypted && nla_put_flag(msg,
NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))

8
net/wireless/rdev-ops.h
View File

@ -734,14 +734,14 @@ static inline int rdev_mgmt_tx(struct cfg80211_registered_device *rdev,
static inline int rdev_tx_control_port(struct cfg80211_registered_device *rdev,
struct net_device *dev,
const void *buf, size_t len,
const u8 *dest, const u8 *src,
__be16 proto, const bool noencrypt)
const u8 *dest, __be16 proto,
const bool noencrypt)
{
int ret;
trace_rdev_tx_control_port(&rdev->wiphy, dev, buf, len,
dest, src, proto, noencrypt);
dest, proto, noencrypt);
ret = rdev->ops->tx_control_port(&rdev->wiphy, dev, buf, len,
dest, src, proto, noencrypt);
dest, proto, noencrypt);
trace_rdev_return_int(&rdev->wiphy, ret);
return ret;
}

27
net/wireless/trace.h
View File

@ -1928,31 +1928,27 @@ TRACE_EVENT(rdev_mgmt_tx,
TRACE_EVENT(rdev_tx_control_port,
TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
const u8 *buf, size_t len,
const u8 *dest, const u8 *src, __be16 proto,
const u8 *buf, size_t len, const u8 *dest, __be16 proto,
bool unencrypted),
TP_ARGS(wiphy, netdev, buf, len, dest, src, proto, unencrypted),
TP_ARGS(wiphy, netdev, buf, len, dest, proto, unencrypted),
TP_STRUCT__entry(
WIPHY_ENTRY
NETDEV_ENTRY
MAC_ENTRY(dest)
MAC_ENTRY(src)
__field(u16, proto)
__field(__be16, proto)
__field(bool, unencrypted)
),
TP_fast_assign(
WIPHY_ASSIGN;
NETDEV_ASSIGN;
MAC_ASSIGN(dest, dest);
MAC_ASSIGN(src, src);
__entry->proto = be16_to_cpu(proto);
__entry->proto = proto;
__entry->unencrypted = unencrypted;
),
TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", dest: " MAC_PR_FMT
", src: " MAC_PR_FMT ", proto: 0x%x, unencrypted: %s",
WIPHY_PR_ARG, NETDEV_PR_ARG,
MAC_PR_ARG(dest), MAC_PR_ARG(src),
__entry->proto,
TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT ","
" proto: 0x%x, unencrypted: %s",
WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(dest),
be16_to_cpu(__entry->proto),
BOOL_TO_STR(__entry->unencrypted))
);
@ -2844,7 +2840,6 @@ TRACE_EVENT(cfg80211_rx_control_port,
TP_STRUCT__entry(
NETDEV_ENTRY
__field(int, len)
MAC_ENTRY(to)
MAC_ENTRY(from)
__field(u16, proto)
__field(bool, unencrypted)
@ -2852,14 +2847,12 @@ TRACE_EVENT(cfg80211_rx_control_port,
TP_fast_assign(
NETDEV_ASSIGN;
__entry->len = skb->len;
MAC_ASSIGN(to, eth_hdr(skb)->h_dest);
MAC_ASSIGN(from, eth_hdr(skb)->h_source);
__entry->proto = be16_to_cpu(skb->protocol);
__entry->unencrypted = unencrypted;
),
TP_printk(NETDEV_PR_FMT ", len=%d, dest: " MAC_PR_FMT
", src: " MAC_PR_FMT ", proto: 0x%x, unencrypted: %s",
NETDEV_PR_ARG, __entry->len, MAC_PR_ARG(to), MAC_PR_ARG(from),
TP_printk(NETDEV_PR_FMT ", len=%d, " MAC_PR_FMT ", proto: 0x%x, unencrypted: %s",
NETDEV_PR_ARG, __entry->len, MAC_PR_ARG(from),
__entry->proto, BOOL_TO_STR(__entry->unencrypted))
);