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nl80211: Implement TDLS callback functions and propagate capabilities

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Allow passing high-level TDLS commands and TDLS frames to kernel
via new nl80211 commands.

Propagate TDLS related nl80211 capability flags from kernel and add them
as driver capability flags.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
This commit is contained in:
Arik Nemtsov 2011-10-23 13:59:00 +03:00 committed by Jouni Malinen
parent 568526f1ea
commit 03ea178603
2 changed files with 108 additions and 0 deletions
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4
src/drivers/driver.h
View file

@ -747,6 +747,10 @@ struct wpa_driver_capa {
#define WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS 0x00020000
/* Driver supports roaming (BSS selection) in firmware */
#define WPA_DRIVER_FLAGS_BSS_SELECTION 0x00040000
/* Driver supports operating as a TDLS peer */
#define WPA_DRIVER_FLAGS_TDLS_SUPPORT 0x00080000
/* Driver requires external TDLS setup/teardown/discovery */
#define WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP 0x00100000
unsigned int flags;
int max_scan_ssids;

104
src/drivers/driver_nl80211.c
View file

@ -1957,6 +1957,17 @@ broken_combination:
capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
}
if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
capa->flags |=
WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
}
}
return NL_SKIP;
}
@ -7329,6 +7340,95 @@ static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
}
#ifdef CONFIG_TDLS
static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
u8 dialog_token, u16 status_code,
const u8 *buf, size_t len)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
return -EOPNOTSUPP;
if (!dst)
return -EINVAL;
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
return send_and_recv_msgs(drv, msg, NULL, NULL);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
{
struct i802_bss *bss = priv;
struct wpa_driver_nl80211_data *drv = bss->drv;
struct nl_msg *msg;
enum nl80211_tdls_operation nl80211_oper;
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
return -EOPNOTSUPP;
switch (oper) {
case TDLS_DISCOVERY_REQ:
nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
break;
case TDLS_SETUP:
nl80211_oper = NL80211_TDLS_SETUP;
break;
case TDLS_TEARDOWN:
nl80211_oper = NL80211_TDLS_TEARDOWN;
break;
case TDLS_ENABLE_LINK:
nl80211_oper = NL80211_TDLS_ENABLE_LINK;
break;
case TDLS_DISABLE_LINK:
nl80211_oper = NL80211_TDLS_DISABLE_LINK;
break;
case TDLS_ENABLE:
return 0;
case TDLS_DISABLE:
return 0;
default:
return -EINVAL;
}
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
return send_and_recv_msgs(drv, msg, NULL, NULL);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
#endif /* CONFIG TDLS */
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.name = "nl80211",
.desc = "Linux nl80211/cfg80211",
@ -7400,4 +7500,8 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.flush_pmkid = nl80211_flush_pmkid,
.set_rekey_info = nl80211_set_rekey_info,
.poll_client = nl80211_poll_client,
#ifdef CONFIG_TDLS
.send_tdls_mgmt = nl80211_send_tdls_mgmt,
.tdls_oper = nl80211_tdls_oper,
#endif /* CONFIG_TDLS */
};