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cfg80211: allow changing port control protocol

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Some vendor specified mechanisms for 802.1X-style
functionality use a different protocol than EAP
(even if EAP is vendor-extensible). Allow setting
the ethertype for the protocol when a driver has
support for this. The default if unspecified is
EAP, of course.

Note: This is suitable only for station mode, not
      for AP implementation.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Juuso Oikarinen <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Johannes Berg 2010-08-27 14:26:53 +03:00 • committed by John W. Linville
commit c0692b8fe2
4 changed files with 56 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

25
net/wireless/nl80211.c
View file

@ -136,6 +136,8 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
.len = sizeof(struct nl80211_sta_flag_update),
},
[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
@ -474,6 +476,9 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
dev->wiphy.max_num_pmkids);
if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
if (!nl_modes)
goto nla_put_failure;
@ -3691,7 +3696,8 @@ unlock_rtnl:
return err;
}
static int nl80211_crypto_settings(struct genl_info *info,
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_crypto_settings *settings,
int cipher_limit)
{
@ -3699,6 +3705,19 @@ static int nl80211_crypto_settings(struct genl_info *info,
settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
u16 proto;
proto = nla_get_u16(
info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
settings->control_port_ethertype = cpu_to_be16(proto);
if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
proto != ETH_P_PAE)
return -EINVAL;
if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
settings->control_port_no_encrypt = true;
} else
settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
void *data;
int len, i;
@ -3826,7 +3845,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_PREV_BSSID])
prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
err = nl80211_crypto_settings(info, &crypto, 1);
err = nl80211_crypto_settings(rdev, info, &crypto, 1);
if (!err)
err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
ssid, ssid_len, ie, ie_len, use_mfp,
@ -4303,7 +4322,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
err = nl80211_crypto_settings(info, &connect.crypto,
err = nl80211_crypto_settings(rdev, info, &connect.crypto,
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;

2
net/wireless/wext-sme.c
View file

@ -197,6 +197,8 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
wdev->wext.connect.ssid_len = len;
wdev->wext.connect.crypto.control_port = false;
wdev->wext.connect.crypto.control_port_ethertype =
cpu_to_be16(ETH_P_PAE);
err = cfg80211_mgd_wext_connect(rdev, wdev);
out: