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nl80211: Clean up capability querying

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There's no need to store everything once and then copy it. Just fill the
capa struct directly in the function that parses the info from nl80211.
This commit is contained in:
Johannes Berg 2011-10-20 21:57:32 +03:00 committed by Jouni Malinen
parent 9b90955ec7
commit e8b5e24e04
1 changed files with 57 additions and 70 deletions
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127
src/drivers/driver_nl80211.c
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@ -1704,18 +1704,9 @@ nla_put_failure:
struct wiphy_info_data {
int max_scan_ssids;
int max_sched_scan_ssids;
int ap_supported;
int p2p_supported;
int p2p_concurrent;
int auth_supported;
int connect_supported;
int offchan_tx_supported;
int max_remain_on_chan;
int firmware_roam;
int sched_scan_supported;
int max_match_sets;
struct wpa_driver_capa *capa;
unsigned int error:1;
};
@ -1725,6 +1716,9 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct wiphy_info_data *info = arg;
int p2p_go_supported = 0, p2p_client_supported = 0;
int p2p_concurrent = 0;
int auth_supported = 0, connect_supported = 0;
struct wpa_driver_capa *capa = info->capa;
static struct nla_policy
iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
[NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
@ -1741,15 +1735,15 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
genlmsg_attrlen(gnlh, 0), NULL);
if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
info->max_scan_ssids =
capa->max_scan_ssids =
nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
info->max_sched_scan_ssids =
capa->max_sched_scan_ssids =
nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
if (tb[NL80211_ATTR_MAX_MATCH_SETS])
info->max_match_sets =
capa->max_match_sets =
nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
@ -1759,7 +1753,7 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
switch (nla_type(nl_mode)) {
case NL80211_IFTYPE_AP:
info->ap_supported = 1;
capa->flags |= WPA_DRIVER_FLAGS_AP;
break;
case NL80211_IFTYPE_P2P_GO:
p2p_go_supported = 1;
@ -1819,7 +1813,7 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
}
if (combination_has_p2p && combination_has_mgd) {
info->p2p_concurrent = 1;
p2p_concurrent = 1;
break;
}
@ -1828,34 +1822,61 @@ broken_combination:
}
}
info->p2p_supported = p2p_go_supported && p2p_client_supported;
if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
struct nlattr *nl_cmd;
int i;
nla_for_each_nested(nl_cmd,
tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
u32 cmd = nla_get_u32(nl_cmd);
if (cmd == NL80211_CMD_AUTHENTICATE)
info->auth_supported = 1;
else if (cmd == NL80211_CMD_CONNECT)
info->connect_supported = 1;
else if (cmd == NL80211_CMD_START_SCHED_SCAN)
info->sched_scan_supported = 1;
switch (nla_get_u32(nl_cmd)) {
case NL80211_CMD_AUTHENTICATE:
auth_supported = 1;
break;
case NL80211_CMD_CONNECT:
connect_supported = 1;
break;
case NL80211_CMD_START_SCHED_SCAN:
capa->sched_scan_supported = 1;
break;
}
}
}
if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK])
info->offchan_tx_supported = 1;
if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
"off-channel TX");
capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
}
if (tb[NL80211_ATTR_ROAM_SUPPORT])
info->firmware_roam = 1;
if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
}
/* default to 5000 since early versions of mac80211 don't set it */
capa->max_remain_on_chan = 5000;
if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
info->max_remain_on_chan =
capa->max_remain_on_chan =
nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
if (auth_supported)
capa->flags |= WPA_DRIVER_FLAGS_SME;
else if (!connect_supported) {
wpa_printf(MSG_INFO, "nl80211: Driver does not support "
"authentication/association or connect commands");
info->error = 1;
}
if (p2p_go_supported && p2p_client_supported)
capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
if (p2p_concurrent) {
wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
"interface (driver advertised support)");
capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
}
return NL_SKIP;
}
@ -1866,9 +1887,7 @@ static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg;
os_memset(info, 0, sizeof(*info));
/* default to 5000 since early versions of mac80211 don't set it */
info->max_remain_on_chan = 5000;
info->capa = &drv->capa;
msg = nlmsg_alloc();
if (!msg)
@ -1893,6 +1912,10 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
struct wiphy_info_data info;
if (wpa_driver_nl80211_get_info(drv, &info))
return -1;
if (info.error)
return -1;
drv->has_capability = 1;
/* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
@ -1907,46 +1930,10 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
WPA_DRIVER_AUTH_SHARED |
WPA_DRIVER_AUTH_LEAP;
drv->capa.max_scan_ssids = info.max_scan_ssids;
drv->capa.max_sched_scan_ssids = info.max_sched_scan_ssids;
drv->capa.sched_scan_supported = info.sched_scan_supported;
drv->capa.max_match_sets = info.max_match_sets;
if (info.ap_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
if (info.auth_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
else if (!info.connect_supported) {
wpa_printf(MSG_INFO, "nl80211: Driver does not support "
"authentication/association or connect commands");
return -1;
}
if (info.offchan_tx_supported) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
"off-channel TX");
drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
}
if (info.firmware_roam) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
drv->capa.flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
}
drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
if (info.p2p_supported)
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
if (info.p2p_concurrent) {
wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
"interface (driver advertised support)");
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
}
drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
drv->capa.max_remain_on_chan = info.max_remain_on_chan;
return 0;
}