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mwifiex: support downloading IEs from tail

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Earlier only RSN, WPA and channel switch IEs from tail buffer would
be downloaded to FW.
This patch adds support for downloading more IEs from tail buffer.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Avinash Patil 2015-06-03 16:59:42 +05:30 committed by Kalle Valo
parent 8a73dd6398
commit e4f59aca0b
1 changed files with 62 additions and 44 deletions
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106
drivers/net/wireless/mwifiex/ie.c
View file

@ -320,63 +320,81 @@ static int mwifiex_set_mgmt_beacon_data_ies(struct mwifiex_private *priv,
/* This function parses head and tail IEs, from cfg80211_beacon_data and sets
* these IE to FW.
*/
static int mwifiex_uap_set_head_tail_ies(struct mwifiex_private *priv,
struct cfg80211_beacon_data *info)
static int mwifiex_uap_parse_tail_ies(struct mwifiex_private *priv,
struct cfg80211_beacon_data *info)
{
struct mwifiex_ie *gen_ie;
struct ieee_types_header *rsn_ie = NULL, *wpa_ie = NULL;
struct ieee_types_header *chsw_ie = NULL;
struct ieee_types_header *hdr;
struct ieee80211_vendor_ie *vendorhdr;
u16 gen_idx = MWIFIEX_AUTO_IDX_MASK, ie_len = 0;
const u8 *vendor_ie;
int left_len, parsed_len = 0;
if (!info->tail || !info->tail_len)
return 0;
gen_ie = kzalloc(sizeof(*gen_ie), GFP_KERNEL);
if (!gen_ie)
return -ENOMEM;
left_len = info->tail_len;
/* Many IEs are generated in FW by parsing bss configuration.
* Let's not add them here; else we may end up duplicating these IEs
*/
while (left_len > sizeof(struct ieee_types_header)) {
hdr = (void *)(info->tail + parsed_len);
switch (hdr->element_id) {
case WLAN_EID_SSID:
case WLAN_EID_SUPP_RATES:
case WLAN_EID_COUNTRY:
case WLAN_EID_PWR_CONSTRAINT:
case WLAN_EID_EXT_SUPP_RATES:
case WLAN_EID_HT_CAPABILITY:
case WLAN_EID_HT_OPERATION:
case WLAN_EID_VHT_CAPABILITY:
case WLAN_EID_VHT_OPERATION:
case WLAN_EID_VENDOR_SPECIFIC:
break;
default:
memcpy(gen_ie->ie_buffer + ie_len, hdr,
hdr->len + sizeof(struct ieee_types_header));
ie_len += hdr->len + sizeof(struct ieee_types_header);
break;
}
left_len -= hdr->len + sizeof(struct ieee_types_header);
parsed_len += hdr->len + sizeof(struct ieee_types_header);
}
/* parse only WPA vendor IE from tail, WMM IE is configured by
* bss_config command
*/
vendorhdr = (void *)cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WPA,
info->tail, info->tail_len);
if (vendorhdr) {
memcpy(gen_ie->ie_buffer + ie_len, vendorhdr,
vendorhdr->len + sizeof(struct ieee_types_header));
ie_len += vendorhdr->len + sizeof(struct ieee_types_header);
}
if (!ie_len) {
kfree(gen_ie);
return 0;
}
gen_ie->ie_index = cpu_to_le16(gen_idx);
gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON |
MGMT_MASK_PROBE_RESP |
MGMT_MASK_ASSOC_RESP);
gen_ie->ie_length = cpu_to_le16(ie_len);
if (info->tail && info->tail_len) {
rsn_ie = (void *)cfg80211_find_ie(WLAN_EID_RSN,
info->tail, info->tail_len);
if (rsn_ie) {
memcpy(gen_ie->ie_buffer, rsn_ie, rsn_ie->len + 2);
ie_len = rsn_ie->len + 2;
gen_ie->ie_length = cpu_to_le16(ie_len);
}
vendor_ie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WPA,
info->tail,
info->tail_len);
if (vendor_ie) {
wpa_ie = (struct ieee_types_header *)vendor_ie;
memcpy(gen_ie->ie_buffer + ie_len,
wpa_ie, wpa_ie->len + 2);
ie_len += wpa_ie->len + 2;
gen_ie->ie_length = cpu_to_le16(ie_len);
}
chsw_ie = (void *)cfg80211_find_ie(WLAN_EID_CHANNEL_SWITCH,
info->tail, info->tail_len);
if (chsw_ie) {
memcpy(gen_ie->ie_buffer + ie_len,
chsw_ie, chsw_ie->len + 2);
ie_len += chsw_ie->len + 2;
gen_ie->ie_length = cpu_to_le16(ie_len);
}
}
if (rsn_ie || wpa_ie || chsw_ie) {
if (mwifiex_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL,
NULL, NULL, NULL)) {
kfree(gen_ie);
return -1;
}
priv->gen_idx = gen_idx;
if (mwifiex_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL, NULL,
NULL, NULL)) {
kfree(gen_ie);
return -1;
}
priv->gen_idx = gen_idx;
kfree(gen_ie);
return 0;
}
@ -390,7 +408,7 @@ int mwifiex_set_mgmt_ies(struct mwifiex_private *priv,
{
int ret;
ret = mwifiex_uap_set_head_tail_ies(priv, info);
ret = mwifiex_uap_parse_tail_ies(priv, info);
return ret;
return mwifiex_set_mgmt_beacon_data_ies(priv, info);