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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-06-16 19:56:42 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 14:57:53 -0400 |
| commit | a538e2d5a30f577e9c8f6ccfe72b29a258e0fe86 (patch) | |
| tree | 56bc91e64d25fc4fdc1f00f01e0afa8be519e252 /net/wireless/nl80211.c | |
| parent | 222ec50a0a5d20e75522aacf4c767df6585e8548 (diff) | |
| download | lwn-a538e2d5a30f577e9c8f6ccfe72b29a258e0fe86.tar.gz lwn-a538e2d5a30f577e9c8f6ccfe72b29a258e0fe86.zip | |
cfg80211: issue netlink notification when scan starts
To ease multiple apps working together smoothly,
send a notification when a scan is started.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f91e5d472c60..5a6c4ca59398 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2839,6 +2839,9 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) drv->scan_req = request; err = drv->ops->scan(&drv->wiphy, dev, request); + if (!err) + nl80211_send_scan_start(drv, dev); + out_free: if (err) { drv->scan_req = NULL; @@ -3665,11 +3668,11 @@ static int nl80211_add_scan_req(struct sk_buff *msg, return -ENOBUFS; } -static int nl80211_send_scan_donemsg(struct sk_buff *msg, - struct cfg80211_registered_device *rdev, - struct net_device *netdev, - u32 pid, u32 seq, int flags, - u32 cmd) +static int nl80211_send_scan_msg(struct sk_buff *msg, + struct cfg80211_registered_device *rdev, + struct net_device *netdev, + u32 pid, u32 seq, int flags, + u32 cmd) { void *hdr; @@ -3690,6 +3693,24 @@ static int nl80211_send_scan_donemsg(struct sk_buff *msg, return -EMSGSIZE; } +void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, + struct net_device *netdev) +{ + struct sk_buff *msg; + + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + return; + + if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, + NL80211_CMD_TRIGGER_SCAN) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL); +} + void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, struct net_device *netdev) { @@ -3699,8 +3720,8 @@ void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, if (!msg) return; - if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, - NL80211_CMD_NEW_SCAN_RESULTS) < 0) { + if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, + NL80211_CMD_NEW_SCAN_RESULTS) < 0) { nlmsg_free(msg); return; } @@ -3717,8 +3738,8 @@ void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, if (!msg) return; - if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0, - NL80211_CMD_SCAN_ABORTED) < 0) { + if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0, + NL80211_CMD_SCAN_ABORTED) < 0) { nlmsg_free(msg); return; } |