409 lines
10 KiB
C
409 lines
10 KiB
C
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#include <linux/version.h>
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#ifdef ANDROID_PLATFORM
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#include "net/wireless/core.h"
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#endif
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#undef NL80211_MCGRP_MLME
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#define NL80211_MCGRP_MLME 3
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#if IS_ENABLED(CONFIG_GKI_OPT_FEATURES) && IS_ENABLED(CONFIG_ANDROID) && (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0))
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static struct genl_family rwnx_nl80211_fam;
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static bool __rwnx_cfg80211_unexpected_frame(struct net_device *dev, u8 cmd,
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const u8 *addr, gfp_t gfp)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
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struct sk_buff *msg;
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void *hdr;
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u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
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if (!nlportid)
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return false;
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msg = nlmsg_new(100, gfp);
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if (!msg)
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return true;
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hdr = genlmsg_put(msg, 0, 0, &rwnx_nl80211_fam, 0, cmd);
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if (!hdr) {
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nlmsg_free(msg);
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return true;
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}
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
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nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
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nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
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return true;
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nla_put_failure:
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nlmsg_free(msg);
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return true;
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}
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bool rwnx_cfg80211_rx_spurious_frame(struct net_device *dev,
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const u8 *addr, gfp_t gfp)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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bool ret;
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
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wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
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return false;
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}
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ret = __rwnx_cfg80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
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addr, gfp);
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return ret;
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}
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bool rwnx_cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
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const u8 *addr, gfp_t gfp)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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bool ret;
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
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wdev->iftype != NL80211_IFTYPE_P2P_GO &&
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wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
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return false;
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}
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ret = __rwnx_cfg80211_unexpected_frame(dev,
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NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
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addr, gfp);
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return ret;
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}
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0))
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void rwnx_cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
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const u8 *ie, u8 ie_len,
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int sig_dbm, gfp_t gfp)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
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struct sk_buff *msg;
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void *hdr;
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
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return;
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msg = nlmsg_new(100 + ie_len, gfp);
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if (!msg)
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return;
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hdr = genlmsg_put(msg, 0, 0, &rwnx_nl80211_fam, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
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if (!hdr) {
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nlmsg_free(msg);
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return;
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}
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
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nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
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nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
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(ie_len && ie &&
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nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
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(sig_dbm &&
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nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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#define NL80211_MCGRP_MLME 3
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genlmsg_multicast_netns(&rwnx_nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
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NL80211_MCGRP_MLME, gfp);
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return;
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nla_put_failure:
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nlmsg_free(msg);
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}
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#endif
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void rwnx_cfg80211_report_obss_beacon(struct wiphy *wiphy,
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const u8 *frame, size_t len,
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int freq, int sig_dbm)
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{
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
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struct sk_buff *msg;
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void *hdr;
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struct cfg80211_beacon_registration *reg;
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spin_lock_bh(&rdev->beacon_registrations_lock);
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list_for_each_entry(reg, &rdev->beacon_registrations, list) {
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msg = nlmsg_new(len + 100, GFP_ATOMIC);
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if (!msg) {
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spin_unlock_bh(&rdev->beacon_registrations_lock);
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return;
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}
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hdr = genlmsg_put(msg, 0, 0, &rwnx_nl80211_fam, 0, NL80211_CMD_FRAME);
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if (!hdr)
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goto nla_put_failure;
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
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(freq &&
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nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
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(sig_dbm &&
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nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
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nla_put(msg, NL80211_ATTR_FRAME, len, frame))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
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}
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spin_unlock_bh(&rdev->beacon_registrations_lock);
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return;
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nla_put_failure:
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spin_unlock_bh(&rdev->beacon_registrations_lock);
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nlmsg_free(msg);
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}
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static int rwnx_nl80211_send_chandef(struct sk_buff *msg,
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const struct cfg80211_chan_def *chandef)
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{
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if (WARN_ON(!cfg80211_chandef_valid(chandef)))
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return -EINVAL;
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
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chandef->chan->center_freq))
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return -ENOBUFS;
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switch (chandef->width) {
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case NL80211_CHAN_WIDTH_20_NOHT:
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case NL80211_CHAN_WIDTH_20:
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case NL80211_CHAN_WIDTH_40:
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if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
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cfg80211_get_chandef_type(chandef)))
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return -ENOBUFS;
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break;
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default:
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break;
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}
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if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
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return -ENOBUFS;
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if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
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return -ENOBUFS;
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if (chandef->center_freq2 &&
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nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
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return -ENOBUFS;
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return 0;
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}
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void rwnx_cfg80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
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struct net_device *netdev,
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struct cfg80211_chan_def *chandef,
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gfp_t gfp,
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enum nl80211_commands notif,
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u8 count)
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{
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
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if (!msg)
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return;
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hdr = genlmsg_put(msg, 0, 0, &rwnx_nl80211_fam, 0, notif);
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if (!hdr) {
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nlmsg_free(msg);
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return;
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}
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if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
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goto nla_put_failure;
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if (rwnx_nl80211_send_chandef(msg, chandef))
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goto nla_put_failure;
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if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
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(nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast_netns(&rwnx_nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
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NL80211_MCGRP_MLME, gfp);
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return;
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nla_put_failure:
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nlmsg_free(msg);
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}
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void rwnx_cfg80211_ch_switch_started_notify(struct net_device *dev,
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struct cfg80211_chan_def *chandef,
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u8 count
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
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, bool quiet
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#endif
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)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
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rwnx_cfg80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
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NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
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}
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int rwnx_regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
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struct ieee80211_regdomain *rd)
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{
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wiphy_apply_custom_regulatory(wiphy, rd);
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return 0;
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}
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void rwnx_skb_append(struct sk_buff *old, struct sk_buff *newsk, struct sk_buff_head *list)
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{
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unsigned long flags;
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struct sk_buff *prev = old;
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struct sk_buff *next = prev->next;
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spin_lock_irqsave(&list->lock, flags);
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WRITE_ONCE(newsk->next, next);
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WRITE_ONCE(newsk->prev, prev);
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WRITE_ONCE(next->prev, newsk);
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WRITE_ONCE(prev->next, newsk);
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list->qlen++;
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spin_unlock_irqrestore(&list->lock, flags);
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}
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bool rwnx_ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef,
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u8 *op_class)
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{
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u8 vht_opclass;
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u32 freq = chandef->center_freq1;
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if (freq >= 2412 && freq <= 2472) {
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if (chandef->width > NL80211_CHAN_WIDTH_40)
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return false;
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/* 2.407 GHz, channels 1..13 */
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if (chandef->width == NL80211_CHAN_WIDTH_40) {
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if (freq > chandef->chan->center_freq)
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*op_class = 83; /* HT40+ */
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else
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*op_class = 84; /* HT40- */
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} else {
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*op_class = 81;
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}
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return true;
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}
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if (freq == 2484) {
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/* channel 14 is only for IEEE 802.11b */
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if (chandef->width != NL80211_CHAN_WIDTH_20_NOHT)
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return false;
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*op_class = 82; /* channel 14 */
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return true;
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}
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switch (chandef->width) {
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case NL80211_CHAN_WIDTH_80:
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vht_opclass = 128;
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break;
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case NL80211_CHAN_WIDTH_160:
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vht_opclass = 129;
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break;
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case NL80211_CHAN_WIDTH_80P80:
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vht_opclass = 130;
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break;
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case NL80211_CHAN_WIDTH_10:
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case NL80211_CHAN_WIDTH_5:
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return false; /* unsupported for now */
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default:
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vht_opclass = 0;
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break;
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}
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/* 5 GHz, channels 36..48 */
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if (freq >= 5180 && freq <= 5240) {
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if (vht_opclass) {
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*op_class = vht_opclass;
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} else if (chandef->width == NL80211_CHAN_WIDTH_40) {
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if (freq > chandef->chan->center_freq)
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*op_class = 116;
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else
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*op_class = 117;
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} else {
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*op_class = 115;
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}
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return true;
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}
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/* 5 GHz, channels 52..64 */
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if (freq >= 5260 && freq <= 5320) {
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if (vht_opclass) {
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*op_class = vht_opclass;
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} else if (chandef->width == NL80211_CHAN_WIDTH_40) {
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if (freq > chandef->chan->center_freq)
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*op_class = 119;
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else
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*op_class = 120;
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} else {
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*op_class = 118;
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}
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return true;
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}
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/* 5 GHz, channels 100..144 */
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if (freq >= 5500 && freq <= 5720) {
|
||
|
|
if (vht_opclass) {
|
||
|
|
*op_class = vht_opclass;
|
||
|
|
} else if (chandef->width == NL80211_CHAN_WIDTH_40) {
|
||
|
|
if (freq > chandef->chan->center_freq)
|
||
|
|
*op_class = 122;
|
||
|
|
else
|
||
|
|
*op_class = 123;
|
||
|
|
} else {
|
||
|
|
*op_class = 121;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 5 GHz, channels 149..169 */
|
||
|
|
if (freq >= 5745 && freq <= 5845) {
|
||
|
|
if (vht_opclass) {
|
||
|
|
*op_class = vht_opclass;
|
||
|
|
} else if (chandef->width == NL80211_CHAN_WIDTH_40) {
|
||
|
|
if (freq > chandef->chan->center_freq)
|
||
|
|
*op_class = 126;
|
||
|
|
else
|
||
|
|
*op_class = 127;
|
||
|
|
} else if (freq <= 5805) {
|
||
|
|
*op_class = 124;
|
||
|
|
} else {
|
||
|
|
*op_class = 125;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 56.16 GHz, channel 1..4 */
|
||
|
|
if (freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 6) {
|
||
|
|
if (chandef->width >= NL80211_CHAN_WIDTH_40)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
*op_class = 180;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* not supported yet */
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
int rwnx_call_usermodehelper(const char *path, char **argv, char **envp, int wait)
|
||
|
|
{
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|