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nl80211/cfg80211: add max_sched_scan_ssids in the hw description

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Some chips can scan more SSIDs with a single scheduled scan command
than with a single normal scan command (eg. wl12xx chips).

To support this, this patch creates a separate hardware description
element that describes the amount of SSIDs supported in scheduled
scans.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luciano Coelho 2011-07-13 14:57:28 +03:00 committed by John W. Linville
parent 77dbbb1389
commit 93b6aa693a
3 changed files with 10 additions and 1 deletions
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4
include/linux/nl80211.h
View File

@ -756,6 +756,8 @@ enum nl80211_commands {
* *
* @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with * @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with
* a single scan request, a wiphy attribute. * a single scan request, a wiphy attribute.
* @NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS: number of SSIDs you can
* scan with a single scheduled scan request, a wiphy attribute.
* @NL80211_ATTR_MAX_SCAN_IE_LEN: maximum length of information elements * @NL80211_ATTR_MAX_SCAN_IE_LEN: maximum length of information elements
* that can be added to a scan request * that can be added to a scan request
* *
@ -1210,6 +1212,8 @@ enum nl80211_attrs {
NL80211_ATTR_REKEY_DATA, NL80211_ATTR_REKEY_DATA,
NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
/* add attributes here, update the policy in nl80211.c */ /* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST, __NL80211_ATTR_AFTER_LAST,

3
include/net/cfg80211.h
View File

@ -1758,6 +1758,8 @@ struct wiphy_wowlan_support {
* this variable determines its size * this variable determines its size
* @max_scan_ssids: maximum number of SSIDs the device can scan for in * @max_scan_ssids: maximum number of SSIDs the device can scan for in
* any given scan * any given scan
* @max_sched_scan_ssids: maximum number of SSIDs the device can scan
* for in any given scheduled scan
* @max_scan_ie_len: maximum length of user-controlled IEs device can * @max_scan_ie_len: maximum length of user-controlled IEs device can
* add to probe request frames transmitted during a scan, must not * add to probe request frames transmitted during a scan, must not
* include fixed IEs like supported rates * include fixed IEs like supported rates
@ -1812,6 +1814,7 @@ struct wiphy {
int bss_priv_size; int bss_priv_size;
u8 max_scan_ssids; u8 max_scan_ssids;
u8 max_sched_scan_ssids;
u16 max_scan_ie_len; u16 max_scan_ie_len;
int n_cipher_suites; int n_cipher_suites;

4
net/wireless/nl80211.c
View File

@ -696,6 +696,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
dev->wiphy.coverage_class); dev->wiphy.coverage_class);
NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
dev->wiphy.max_scan_ssids); dev->wiphy.max_scan_ssids);
NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
dev->wiphy.max_sched_scan_ssids);
NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
dev->wiphy.max_scan_ie_len); dev->wiphy.max_scan_ie_len);
@ -3511,7 +3513,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
tmp) tmp)
n_ssids++; n_ssids++;
if (n_ssids > wiphy->max_scan_ssids) if (n_ssids > wiphy->max_sched_scan_ssids)
return -EINVAL; return -EINVAL;
if (info->attrs[NL80211_ATTR_IE]) if (info->attrs[NL80211_ATTR_IE])