diff options
Diffstat (limited to 'net/wireless')
-rw-r--r-- | net/wireless/mlme.c | 11 | ||||
-rw-r--r-- | net/wireless/nl80211.c | 113 | ||||
-rw-r--r-- | net/wireless/nl80211.h | 4 |
3 files changed, 128 insertions, 0 deletions
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 3633ab6..832f657 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -1084,3 +1084,14 @@ void cfg80211_cqm_pktloss_notify(struct net_device *dev, nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp); } EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); + +void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, + const u8 *replay_ctr, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + + nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); +} +EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 50ff82a..491b0ba 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -176,6 +176,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, + [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, }; /* policy for the key attributes */ @@ -206,6 +207,14 @@ nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, }; +/* policy for GTK rekey offload attributes */ +static const struct nla_policy +nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { + [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, + [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, + [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, +}; + /* ifidx get helper */ static int nl80211_get_ifidx(struct netlink_callback *cb) { @@ -5408,6 +5417,57 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) return err; } +static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct nlattr *tb[NUM_NL80211_REKEY_DATA]; + struct cfg80211_gtk_rekey_data rekey_data; + int err; + + if (!info->attrs[NL80211_ATTR_REKEY_DATA]) + return -EINVAL; + + err = nla_parse(tb, MAX_NL80211_REKEY_DATA, + nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), + nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), + nl80211_rekey_policy); + if (err) + return err; + + if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) + return -ERANGE; + if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) + return -ERANGE; + if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) + return -ERANGE; + + memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), + NL80211_KEK_LEN); + memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), + NL80211_KCK_LEN); + memcpy(rekey_data.replay_ctr, + nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), + NL80211_REPLAY_CTR_LEN); + + wdev_lock(wdev); + if (!wdev->current_bss) { + err = -ENOTCONN; + goto out; + } + + if (!rdev->ops->set_rekey_data) { + err = -EOPNOTSUPP; + goto out; + } + + err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data); + out: + wdev_unlock(wdev); + return err; +} + #define NL80211_FLAG_NEED_WIPHY 0x01 #define NL80211_FLAG_NEED_NETDEV 0x02 #define NL80211_FLAG_NEED_RTNL 0x04 @@ -5939,6 +5999,14 @@ static struct genl_ops nl80211_ops[] = { .internal_flags = NL80211_FLAG_NEED_WIPHY | NL80211_FLAG_NEED_RTNL, }, + { + .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, + .doit = nl80211_set_rekey_data, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | + NL80211_FLAG_NEED_RTNL, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { @@ -6883,6 +6951,51 @@ nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, nlmsg_free(msg); } +void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *bssid, + const u8 *replay_ctr, gfp_t gfp) +{ + struct sk_buff *msg; + struct nlattr *rekey_attr; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); + if (!hdr) { + nlmsg_free(msg); + return; + } + + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); + NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); + + rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); + if (!rekey_attr) + goto nla_put_failure; + + NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, + NL80211_REPLAY_CTR_LEN, replay_ctr); + + nla_nest_end(msg, rekey_attr); + + if (genlmsg_end(msg, hdr) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, + nl80211_mlme_mcgrp.id, gfp); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + void nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 2f1bfb8..5d69c56 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -109,4 +109,8 @@ nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *peer, u32 num_packets, gfp_t gfp); +void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *bssid, + const u8 *replay_ctr, gfp_t gfp); + #endif /* __NET_WIRELESS_NL80211_H */ |