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nl80211: support per-mac GTK on _new_key_group

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AdHoc will require a per-mac GTK to be set. For this reason
nl80211_build_new_key_group has been updated to optionally take
a MAC address.
This commit is contained in:
James Prestwood 2018-10-08 13:44:12 -07:00 committed by Denis Kenzior
parent 5e5caedb90
commit 2123d613fc
4 changed files with 23 additions and 6 deletions
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3
src/ap.c
View File

@ -567,7 +567,8 @@ static void ap_associate_sta_cb(struct l_genl_msg *msg, void *user_data)
msg = nl80211_build_new_key_group(
netdev_get_ifindex(ap->netdev),
group_cipher, ap->gtk_index,
ap->gtk, gtk_len, NULL, 0);
ap->gtk, gtk_len, NULL,
0, NULL);
if (!l_genl_family_send(nl80211, msg, ap_gtk_op_cb, NULL,
NULL)) {

6
src/netdev.c
View File

@ -1167,6 +1167,8 @@ static void netdev_set_gtk(struct handshake_state *hs, uint8_t key_index,
struct netdev *netdev = nhs->netdev;
uint8_t gtk_buf[32];
struct l_genl_msg *msg;
const uint8_t *addr = (netdev->type == NL80211_IFTYPE_ADHOC) ?
nhs->super.aa : NULL;
l_debug("%d", netdev->index);
@ -1184,7 +1186,7 @@ static void netdev_set_gtk(struct handshake_state *hs, uint8_t key_index,
}
msg = nl80211_build_new_key_group(netdev->index, cipher, key_index,
gtk_buf, gtk_len, rsc, rsc_len);
gtk_buf, gtk_len, rsc, rsc_len, addr);
nhs->group_new_key_cmd_id =
l_genl_family_send(nl80211, msg, netdev_new_group_key_cb,
@ -1229,7 +1231,7 @@ static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
}
msg = nl80211_build_new_key_group(netdev->index, cipher, key_index,
igtk_buf, igtk_len, ipn, ipn_len);
igtk_buf, igtk_len, ipn, ipn_len, NULL);
nhs->group_management_new_key_cmd_id =
l_genl_family_send(nl80211, msg,

17
src/nl80211_util.c
View File

@ -30,15 +30,18 @@
struct l_genl_msg *nl80211_build_new_key_group(uint32_t ifindex, uint32_t cipher,
uint8_t key_id, const uint8_t *key,
size_t key_len, const uint8_t *ctr,
size_t ctr_len)
size_t ctr_len, const uint8_t *addr)
{
struct l_genl_msg *msg;
msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &ifindex);
l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY);
if (addr)
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY);
l_genl_msg_append_attr(msg, NL80211_KEY_DATA, key_len, key);
l_genl_msg_append_attr(msg, NL80211_KEY_CIPHER, 4, &cipher);
l_genl_msg_append_attr(msg, NL80211_KEY_IDX, 1, &key_id);
@ -46,6 +49,16 @@ struct l_genl_msg *nl80211_build_new_key_group(uint32_t ifindex, uint32_t cipher
if (ctr)
l_genl_msg_append_attr(msg, NL80211_KEY_SEQ, ctr_len, ctr);
if (addr) {
uint32_t type = NL80211_KEYTYPE_GROUP;
l_genl_msg_append_attr(msg, NL80211_KEY_TYPE, 4, &type);
l_genl_msg_enter_nested(msg, NL80211_KEY_DEFAULT_TYPES);
l_genl_msg_append_attr(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST,
0, NULL);
l_genl_msg_leave_nested(msg);
}
l_genl_msg_leave_nested(msg);
return msg;

3
src/nl80211_util.h
View File

@ -25,7 +25,8 @@
struct l_genl_msg *nl80211_build_new_key_group(uint32_t ifindex,
uint32_t cipher, uint8_t key_id,
const uint8_t *key, size_t key_len,
const uint8_t *ctr, size_t ctr_len);
const uint8_t *ctr, size_t ctr_len,
const uint8_t *addr);
struct l_genl_msg *nl80211_build_set_station_authorized(uint32_t ifindex,
const uint8_t *addr);