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authorAndrei Otcheretianski <andrei.otcheretianski@intel.com>2014-05-09 14:11:44 +0300
committerJohannes Berg <johannes.berg@intel.com>2014-05-15 14:52:44 +0200
commit34d22ce22b0b249804816990a3b62b08b1a62546 (patch)
tree5d40eed4e362660f83e16d08aa9bec9ac9c9376a /net/wireless
parent00ec75fc5a6499d8fdeb6ec9f8f5df68b9291c74 (diff)
cfg80211: Add API to update CSA counters in mgmt frames
Add NL80211_ATTR_CSA_C_OFFSETS_TX which holds an array of offsets to the CSA counters which should be updated when sending a management frames with NL80211_CMD_FRAME. This API should be used by the drivers that wish to keep the CSA counter updated in probe responses, but do not implement probe response offloading and so, do not use ieee80211_proberesp_get function. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 74e7299e4add..4c0ca40ef90e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -386,6 +386,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
[NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
+ [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
};
/* policy for the key attributes */
@@ -7786,6 +7787,27 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
if (!chandef.chan && params.offchan)
return -EINVAL;
+ params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
+ params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
+
+ if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
+ int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
+ int i;
+
+ if (len % sizeof(u16))
+ return -EINVAL;
+
+ params.n_csa_offsets = len / sizeof(u16);
+ params.csa_offsets =
+ nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
+
+ /* check that all the offsets fit the frame */
+ for (i = 0; i < params.n_csa_offsets; i++) {
+ if (params.csa_offsets[i] >= params.len)
+ return -EINVAL;
+ }
+ }
+
if (!params.dont_wait_for_ack) {
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -7799,8 +7821,6 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
}
}
- params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
- params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
params.chan = chandef.chan;
err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
if (err)