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nl80211: Add support to send updated connection parameters

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After an initial connection certain connection parameters may be
updated. It may be necessary to send these parameters to drivers since
these will be used in driver-initiated roaming cases. This commit
defines the driver_ops call for this and implements the needed
functionality for the nl80211 driver interface.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Vidyullatha Kanchanapally 2017-08-17 13:36:40 +05:30 committed by Jouni Malinen
parent cddfda7892
commit 3c67e977de
2 changed files with 102 additions and 31 deletions
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24
src/drivers/driver.h
View file

@ -2044,6 +2044,13 @@ struct wpa_pmkid_params {
size_t pmk_len; size_t pmk_len;
}; };
/* Mask used to specify which connection parameters have to be updated */
enum wpa_drv_update_connect_params_mask {
WPA_DRV_UPDATE_ASSOC_IES = BIT(0),
WPA_DRV_UPDATE_FILS_ERP_INFO = BIT(1),
WPA_DRV_UPDATE_AUTH_TYPE = BIT(2),
};
/** /**
* struct wpa_driver_ops - Driver interface API definition * struct wpa_driver_ops - Driver interface API definition
* *
@ -3977,6 +3984,23 @@ struct wpa_driver_ops {
*/ */
int (*set_bssid_blacklist)(void *priv, unsigned int num_bssid, int (*set_bssid_blacklist)(void *priv, unsigned int num_bssid,
const u8 *bssid); const u8 *bssid);
/**
* update_connect_params - Update the connection parameters
* @priv: Private driver interface data
* @params: Association parameters
* @mask: Bit mask indicating which parameters in @params have to be
* updated
* Returns: 0 on success, -1 on failure
*
* Update the connection parameters when in connected state so that the
* driver uses the updated parameters for subsequent roaming. This is
* used only with drivers that implement internal BSS selection and
* roaming.
*/
int (*update_connect_params)(
void *priv, struct wpa_driver_associate_params *params,
enum wpa_drv_update_connect_params_mask mask);
}; };
/** /**

109
src/drivers/driver_nl80211.c
View file

@ -3155,6 +3155,27 @@ static void nl80211_unmask_11b_rates(struct i802_bss *bss)
} }
static enum nl80211_auth_type get_nl_auth_type(int wpa_auth_alg)
{
if (wpa_auth_alg & WPA_AUTH_ALG_OPEN)
return NL80211_AUTHTYPE_OPEN_SYSTEM;
if (wpa_auth_alg & WPA_AUTH_ALG_SHARED)
return NL80211_AUTHTYPE_SHARED_KEY;
if (wpa_auth_alg & WPA_AUTH_ALG_LEAP)
return NL80211_AUTHTYPE_NETWORK_EAP;
if (wpa_auth_alg & WPA_AUTH_ALG_FT)
return NL80211_AUTHTYPE_FT;
if (wpa_auth_alg & WPA_AUTH_ALG_SAE)
return NL80211_AUTHTYPE_SAE;
if (wpa_auth_alg & WPA_AUTH_ALG_FILS)
return NL80211_AUTHTYPE_FILS_SK;
if (wpa_auth_alg & WPA_AUTH_ALG_FILS_SK_PFS)
return NL80211_AUTHTYPE_FILS_SK_PFS;
return NL80211_AUTHTYPE_MAX;
}
static int wpa_driver_nl80211_authenticate( static int wpa_driver_nl80211_authenticate(
struct i802_bss *bss, struct wpa_driver_auth_params *params) struct i802_bss *bss, struct wpa_driver_auth_params *params)
{ {
@ -3237,24 +3258,10 @@ retry:
params->auth_data)) params->auth_data))
goto fail; goto fail;
} }
if (params->auth_alg & WPA_AUTH_ALG_OPEN) type = get_nl_auth_type(params->auth_alg);
type = NL80211_AUTHTYPE_OPEN_SYSTEM;
else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
type = NL80211_AUTHTYPE_SHARED_KEY;
else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
type = NL80211_AUTHTYPE_NETWORK_EAP;
else if (params->auth_alg & WPA_AUTH_ALG_FT)
type = NL80211_AUTHTYPE_FT;
else if (params->auth_alg & WPA_AUTH_ALG_SAE)
type = NL80211_AUTHTYPE_SAE;
else if (params->auth_alg & WPA_AUTH_ALG_FILS)
type = NL80211_AUTHTYPE_FILS_SK;
else if (params->auth_alg & WPA_AUTH_ALG_FILS_SK_PFS)
type = NL80211_AUTHTYPE_FILS_SK_PFS;
else
goto fail;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type); wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type)) if (type == NL80211_AUTHTYPE_MAX ||
nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
goto fail; goto fail;
if (params->local_state_change) { if (params->local_state_change) {
wpa_printf(MSG_DEBUG, " * Local state change only"); wpa_printf(MSG_DEBUG, " * Local state change only");
@ -5402,21 +5409,10 @@ static int wpa_driver_nl80211_try_connect(
goto skip_auth_type; goto skip_auth_type;
} }
if (params->auth_alg & WPA_AUTH_ALG_OPEN) type = get_nl_auth_type(params->auth_alg);
type = NL80211_AUTHTYPE_OPEN_SYSTEM;
else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
type = NL80211_AUTHTYPE_SHARED_KEY;
else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
type = NL80211_AUTHTYPE_NETWORK_EAP;
else if (params->auth_alg & WPA_AUTH_ALG_FT)
type = NL80211_AUTHTYPE_FT;
else if (params->auth_alg & WPA_AUTH_ALG_FILS)
type = NL80211_AUTHTYPE_FILS_SK;
else
goto fail;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type); wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
if (nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type)) if (type == NL80211_AUTHTYPE_MAX ||
nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
goto fail; goto fail;
skip_auth_type: skip_auth_type:
@ -10295,6 +10291,56 @@ static int nl80211_get_ext_capab(void *priv, enum wpa_driver_if_type type,
} }
static int nl80211_update_connection_params(
void *priv, struct wpa_driver_associate_params *params,
enum wpa_drv_update_connect_params_mask mask)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
int ret = -1;
enum nl80211_auth_type type;
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_UPDATE_CONNECT_PARAMS);
if (!msg)
goto fail;
wpa_printf(MSG_DEBUG, "nl80211: Update connection params (ifindex=%d)",
drv->ifindex);
if ((mask & WPA_DRV_UPDATE_ASSOC_IES) && params->wpa_ie) {
if (nla_put(msg, NL80211_ATTR_IE, params->wpa_ie_len,
params->wpa_ie))
goto fail;
wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie,
params->wpa_ie_len);
}
if (mask & WPA_DRV_UPDATE_AUTH_TYPE) {
type = get_nl_auth_type(params->auth_alg);
if (type == NL80211_AUTHTYPE_MAX ||
nla_put_u32(msg, NL80211_ATTR_AUTH_TYPE, type))
goto fail;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
}
if ((mask & WPA_DRV_UPDATE_FILS_ERP_INFO) &&
nl80211_put_fils_connect_params(drv, params, msg))
goto fail;
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret)
wpa_dbg(drv->ctx, MSG_DEBUG,
"nl80211: Update connect params command failed: ret=%d (%s)",
ret, strerror(-ret));
fail:
nlmsg_free(msg);
return ret;
}
const struct wpa_driver_ops wpa_driver_nl80211_ops = { const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.name = "nl80211", .name = "nl80211",
.desc = "Linux nl80211/cfg80211", .desc = "Linux nl80211/cfg80211",
@ -10420,4 +10466,5 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
#endif /* CONFIG_DRIVER_NL80211_QCA */ #endif /* CONFIG_DRIVER_NL80211_QCA */
.configure_data_frame_filters = nl80211_configure_data_frame_filters, .configure_data_frame_filters = nl80211_configure_data_frame_filters,
.get_ext_capab = nl80211_get_ext_capab, .get_ext_capab = nl80211_get_ext_capab,
.update_connect_params = nl80211_update_connection_params,
}; };