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nl80211: Add API to set the PMK to the driver

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Add support for setting the PMK to the driver. This is used for
drivers that support 4-way handshake offload.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
This commit is contained in:
Avraham Stern 2018-01-28 14:45:34 +02:00 • committed by Jouni Malinen
parent 0ff08f9636
commit 05fc7c68f6
1 changed files with 42 additions and 0 deletions
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42
src/drivers/driver_nl80211.c
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@ -2812,6 +2812,44 @@ static int issue_key_mgmt_set_key(struct wpa_driver_nl80211_data *drv,
#endif /* CONFIG_DRIVER_NL80211_QCA */ #endif /* CONFIG_DRIVER_NL80211_QCA */
static int nl80211_set_pmk(struct wpa_driver_nl80211_data *drv,
const u8 *key, size_t key_len,
const u8 *addr)
{
struct nl_msg *msg = NULL;
int ret;
/*
* If the authenticator address is not set, assume it is
* the current BSSID.
*/
if (!addr && drv->associated)
addr = drv->bssid;
else if (!addr)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Set PMK to the driver for " MACSTR,
MAC2STR(addr));
wpa_hexdump_key(MSG_DEBUG, "nl80211: PMK", key, key_len);
msg = nl80211_drv_msg(drv, 0, NL80211_CMD_SET_PMK);
if (!msg ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put(msg, NL80211_ATTR_PMK, key_len, key)) {
nl80211_nlmsg_clear(msg);
nlmsg_free(msg);
return -ENOBUFS;
}
ret = send_and_recv_msgs(drv, msg, NULL, (void *) -1);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Set PMK failed: ret=%d (%s)",
ret, strerror(-ret));
}
return ret;
}
static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss, static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
enum wpa_alg alg, const u8 *addr, enum wpa_alg alg, const u8 *addr,
int key_idx, int set_tx, int key_idx, int set_tx,
@ -2850,6 +2888,10 @@ static int wpa_driver_nl80211_set_key(const char *ifname, struct i802_bss *bss,
} }
#endif /* CONFIG_DRIVER_NL80211_QCA */ #endif /* CONFIG_DRIVER_NL80211_QCA */
if (alg == WPA_ALG_PMK &&
(drv->capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
return nl80211_set_pmk(drv, key, key_len, addr);
if (alg == WPA_ALG_NONE) { if (alg == WPA_ALG_NONE) {
msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY); msg = nl80211_ifindex_msg(drv, ifindex, 0, NL80211_CMD_DEL_KEY);
if (!msg) if (!msg)