From 73d54c9e74c4d8ee8a41bc516f481f0f754eca32 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 9 Mar 2009 22:07:42 -0400 Subject: cfg80211: add regulatory netlink multicast group This allows us to send to userspace "regulatory" events. For now we just send an event when we change regulatory domains. We also notify userspace when devices are using their own custom world roaming regulatory domains. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) (limited to 'net/wireless/nl80211.c') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 531bb67cf50..8ac3d26014a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2739,6 +2739,9 @@ static struct genl_multicast_group nl80211_config_mcgrp = { static struct genl_multicast_group nl80211_scan_mcgrp = { .name = "scan", }; +static struct genl_multicast_group nl80211_regulatory_mcgrp = { + .name = "regulatory", +}; /* notification functions */ @@ -2818,6 +2821,61 @@ void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); } +/* + * This can happen on global regulatory changes or device specific settings + * based on custom world regulatory domains. + */ +void nl80211_send_reg_change_event(struct regulatory_request *request) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); + if (!hdr) { + nlmsg_free(msg); + return; + } + + /* Userspace can always count this one always being set */ + NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator); + + if (request->alpha2[0] == '0' && request->alpha2[1] == '0') + NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, + NL80211_REGDOM_TYPE_WORLD); + else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') + NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, + NL80211_REGDOM_TYPE_CUSTOM_WORLD); + else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || + request->intersect) + NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, + NL80211_REGDOM_TYPE_INTERSECTION); + else { + NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE, + NL80211_REGDOM_TYPE_COUNTRY); + NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2); + } + + if (wiphy_idx_valid(request->wiphy_idx)) + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx); + + if (genlmsg_end(msg, hdr) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL); + + return; + +nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + /* initialisation/exit functions */ int nl80211_init(void) @@ -2842,6 +2900,10 @@ int nl80211_init(void) if (err) goto err_out; + err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp); + if (err) + goto err_out; + return 0; err_out: genl_unregister_family(&nl80211_fam); -- cgit v1.2.3