diff options
| author | Thomas Pedersen <c_tpeder@qca.qualcomm.com> | 2012-04-06 13:35:47 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-04-11 16:23:59 -0400 |
| commit | 5314526b1743e8e8614293db7d86e480b4fe9824 (patch) | |
| tree | c493979d2d417b9a146ac6ef5e1b5562a5fda6df /net/wireless/nl80211.c | |
| parent | 14dc7852099535d17807e348dd127433413b7e0a (diff) | |
cfg80211: add channel switch notify event
The firmware may decide to switch channels while already beaconing, e.g.
in response to a cfg80211 connect request on a different vif. Add this
event to notify userspace when an AP or GO interface has successfully
migrated to a new channel, so it can update its configuration
accordingly.
Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 40e5620e5fde..c3e82af72bf5 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7922,6 +7922,38 @@ void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, nlmsg_free(msg); } +void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, int freq, + enum nl80211_channel_type type, gfp_t gfp) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); + if (!hdr) { + nlmsg_free(msg); + return; + } + + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type); + + genlmsg_end(msg, hdr); + + genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, + nl80211_mlme_mcgrp.id, gfp); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + void nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, |