diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 18:00:47 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 18:00:47 +0200 |
commit | 6c373ca89399c5a3f7ef210ad8f63dc3437da345 (patch) | |
tree | 74d1ec65087df1da1021b43ac51acc1ee8601809 /net/mac80211/ibss.c | |
parent | Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm (diff) | |
parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsh... (diff) | |
download | linux-6c373ca89399c5a3f7ef210ad8f63dc3437da345.tar.xz linux-6c373ca89399c5a3f7ef210ad8f63dc3437da345.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) Add BQL support to via-rhine, from Tino Reichardt.
2) Integrate SWITCHDEV layer support into the DSA layer, so DSA drivers
can support hw switch offloading. From Floria Fainelli.
3) Allow 'ip address' commands to initiate multicast group join/leave,
from Madhu Challa.
4) Many ipv4 FIB lookup optimizations from Alexander Duyck.
5) Support EBPF in cls_bpf classifier and act_bpf action, from Daniel
Borkmann.
6) Remove the ugly compat support in ARP for ugly layers like ax25,
rose, etc. And use this to clean up the neigh layer, then use it to
implement MPLS support. All from Eric Biederman.
7) Support L3 forwarding offloading in switches, from Scott Feldman.
8) Collapse the LOCAL and MAIN ipv4 FIB tables when possible, to speed
up route lookups even further. From Alexander Duyck.
9) Many improvements and bug fixes to the rhashtable implementation,
from Herbert Xu and Thomas Graf. In particular, in the case where
an rhashtable user bulk adds a large number of items into an empty
table, we expand the table much more sanely.
10) Don't make the tcp_metrics hash table per-namespace, from Eric
Biederman.
11) Extend EBPF to access SKB fields, from Alexei Starovoitov.
12) Split out new connection request sockets so that they can be
established in the main hash table. Much less false sharing since
hash lookups go direct to the request sockets instead of having to
go first to the listener then to the request socks hashed
underneath. From Eric Dumazet.
13) Add async I/O support for crytpo AF_ALG sockets, from Tadeusz Struk.
14) Support stable privacy address generation for RFC7217 in IPV6. From
Hannes Frederic Sowa.
15) Hash network namespace into IP frag IDs, also from Hannes Frederic
Sowa.
16) Convert PTP get/set methods to use 64-bit time, from Richard
Cochran.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1816 commits)
fm10k: Bump driver version to 0.15.2
fm10k: corrected VF multicast update
fm10k: mbx_update_max_size does not drop all oversized messages
fm10k: reset head instead of calling update_max_size
fm10k: renamed mbx_tx_dropped to mbx_tx_oversized
fm10k: update xcast mode before synchronizing multicast addresses
fm10k: start service timer on probe
fm10k: fix function header comment
fm10k: comment next_vf_mbx flow
fm10k: don't handle mailbox events in iov_event path and always process mailbox
fm10k: use separate workqueue for fm10k driver
fm10k: Set PF queues to unlimited bandwidth during virtualization
fm10k: expose tx_timeout_count as an ethtool stat
fm10k: only increment tx_timeout_count in Tx hang path
fm10k: remove extraneous "Reset interface" message
fm10k: separate PF only stats so that VF does not display them
fm10k: use hw->mac.max_queues for stats
fm10k: only show actual queues, not the maximum in hardware
fm10k: allow creation of VLAN on default vid
fm10k: fix unused warnings
...
Diffstat (limited to 'net/mac80211/ibss.c')
-rw-r--r-- | net/mac80211/ibss.c | 343 |
1 files changed, 221 insertions, 122 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index b606b53a49a7..bfef1b215050 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -188,6 +188,16 @@ ieee80211_ibss_build_presp(struct ieee80211_sub_if_data *sdata, */ pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap, chandef, 0); + + /* add VHT capability and information IEs */ + if (chandef->width != NL80211_CHAN_WIDTH_20 && + chandef->width != NL80211_CHAN_WIDTH_40 && + sband->vht_cap.vht_supported) { + pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, + sband->vht_cap.cap); + pos = ieee80211_ie_build_vht_oper(pos, &sband->vht_cap, + chandef); + } } if (local->hw.queues >= IEEE80211_NUM_ACS) @@ -249,8 +259,6 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, if (presp) kfree_rcu(presp, rcu_head); - sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; - /* make a copy of the chandef, it could be modified below. */ chandef = *req_chandef; chan = chandef.chan; @@ -417,6 +425,11 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, NL80211_CHAN_WIDTH_20_NOHT); chandef.width = sdata->u.ibss.chandef.width; break; + case NL80211_CHAN_WIDTH_80: + case NL80211_CHAN_WIDTH_160: + chandef = sdata->u.ibss.chandef; + chandef.chan = cbss->channel; + break; default: /* fall back to 20 MHz for unsupported modes */ cfg80211_chandef_create(&chandef, cbss->channel, @@ -470,22 +483,19 @@ int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, struct beacon_data *presp, *old_presp; struct cfg80211_bss *cbss; const struct cfg80211_bss_ies *ies; - u16 capability; + u16 capability = 0; u64 tsf; int ret = 0; sdata_assert_lock(sdata); - capability = WLAN_CAPABILITY_IBSS; - if (ifibss->privacy) - capability |= WLAN_CAPABILITY_PRIVACY; + capability = WLAN_CAPABILITY_PRIVACY; cbss = cfg80211_get_bss(sdata->local->hw.wiphy, ifibss->chandef.chan, ifibss->bssid, ifibss->ssid, - ifibss->ssid_len, WLAN_CAPABILITY_IBSS | - WLAN_CAPABILITY_PRIVACY, - capability); + ifibss->ssid_len, IEEE80211_BSS_TYPE_IBSS, + IEEE80211_PRIVACY(ifibss->privacy)); if (WARN_ON(!cbss)) { ret = -EINVAL; @@ -525,23 +535,17 @@ int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct cfg80211_bss *cbss; int err, changed = 0; - u16 capability; sdata_assert_lock(sdata); /* update cfg80211 bss information with the new channel */ if (!is_zero_ether_addr(ifibss->bssid)) { - capability = WLAN_CAPABILITY_IBSS; - - if (ifibss->privacy) - capability |= WLAN_CAPABILITY_PRIVACY; - cbss = cfg80211_get_bss(sdata->local->hw.wiphy, ifibss->chandef.chan, ifibss->bssid, ifibss->ssid, - ifibss->ssid_len, WLAN_CAPABILITY_IBSS | - WLAN_CAPABILITY_PRIVACY, - capability); + ifibss->ssid_len, + IEEE80211_BSS_TYPE_IBSS, + IEEE80211_PRIVACY(ifibss->privacy)); /* XXX: should not really modify cfg80211 data */ if (cbss) { cbss->channel = sdata->csa_chandef.chan; @@ -682,19 +686,13 @@ static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata) struct cfg80211_bss *cbss; struct beacon_data *presp; struct sta_info *sta; - u16 capability; if (!is_zero_ether_addr(ifibss->bssid)) { - capability = WLAN_CAPABILITY_IBSS; - - if (ifibss->privacy) - capability |= WLAN_CAPABILITY_PRIVACY; - cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan, ifibss->bssid, ifibss->ssid, - ifibss->ssid_len, WLAN_CAPABILITY_IBSS | - WLAN_CAPABILITY_PRIVACY, - capability); + ifibss->ssid_len, + IEEE80211_BSS_TYPE_IBSS, + IEEE80211_PRIVACY(ifibss->privacy)); if (cbss) { cfg80211_unlink_bss(local->hw.wiphy, cbss); @@ -980,110 +978,140 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0, 0); } -static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, - struct ieee80211_mgmt *mgmt, size_t len, - struct ieee80211_rx_status *rx_status, - struct ieee802_11_elems *elems) +static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len, + struct ieee80211_rx_status *rx_status, + struct ieee802_11_elems *elems, + struct ieee80211_channel *channel) { - struct ieee80211_local *local = sdata->local; - struct cfg80211_bss *cbss; - struct ieee80211_bss *bss; struct sta_info *sta; - struct ieee80211_channel *channel; - u64 beacon_timestamp, rx_timestamp; - u32 supp_rates = 0; enum ieee80211_band band = rx_status->band; enum nl80211_bss_scan_width scan_width; + struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; bool rates_updated = false; + u32 supp_rates = 0; - channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); - if (!channel) + if (sdata->vif.type != NL80211_IFTYPE_ADHOC) return; - if (sdata->vif.type == NL80211_IFTYPE_ADHOC && - ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) { + if (!ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) + return; - rcu_read_lock(); - sta = sta_info_get(sdata, mgmt->sa); - - if (elems->supp_rates) { - supp_rates = ieee80211_sta_get_rates(sdata, elems, - band, NULL); - if (sta) { - u32 prev_rates; - - prev_rates = sta->sta.supp_rates[band]; - /* make sure mandatory rates are always added */ - scan_width = NL80211_BSS_CHAN_WIDTH_20; - if (rx_status->flag & RX_FLAG_5MHZ) - scan_width = NL80211_BSS_CHAN_WIDTH_5; - if (rx_status->flag & RX_FLAG_10MHZ) - scan_width = NL80211_BSS_CHAN_WIDTH_10; - - sta->sta.supp_rates[band] = supp_rates | - ieee80211_mandatory_rates(sband, - scan_width); - if (sta->sta.supp_rates[band] != prev_rates) { - ibss_dbg(sdata, - "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", - sta->sta.addr, prev_rates, - sta->sta.supp_rates[band]); - rates_updated = true; - } - } else { - rcu_read_unlock(); - sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, - mgmt->sa, supp_rates); + rcu_read_lock(); + sta = sta_info_get(sdata, mgmt->sa); + + if (elems->supp_rates) { + supp_rates = ieee80211_sta_get_rates(sdata, elems, + band, NULL); + if (sta) { + u32 prev_rates; + + prev_rates = sta->sta.supp_rates[band]; + /* make sure mandatory rates are always added */ + scan_width = NL80211_BSS_CHAN_WIDTH_20; + if (rx_status->flag & RX_FLAG_5MHZ) + scan_width = NL80211_BSS_CHAN_WIDTH_5; + if (rx_status->flag & RX_FLAG_10MHZ) + scan_width = NL80211_BSS_CHAN_WIDTH_10; + + sta->sta.supp_rates[band] = supp_rates | + ieee80211_mandatory_rates(sband, scan_width); + if (sta->sta.supp_rates[band] != prev_rates) { + ibss_dbg(sdata, + "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", + sta->sta.addr, prev_rates, + sta->sta.supp_rates[band]); + rates_updated = true; } + } else { + rcu_read_unlock(); + sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, + mgmt->sa, supp_rates); } + } - if (sta && elems->wmm_info) - sta->sta.wme = true; - - if (sta && elems->ht_operation && elems->ht_cap_elem && - sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && - sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 && - sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) { - /* we both use HT */ - struct ieee80211_ht_cap htcap_ie; - struct cfg80211_chan_def chandef; - - ieee80211_ht_oper_to_chandef(channel, - elems->ht_operation, - &chandef); - - memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie)); - - /* - * fall back to HT20 if we don't use or use - * the other extension channel - */ - if (chandef.center_freq1 != - sdata->u.ibss.chandef.center_freq1) - htcap_ie.cap_info &= - cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40); - - rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap( - sdata, sband, &htcap_ie, sta); + if (sta && elems->wmm_info && local->hw.queues >= IEEE80211_NUM_ACS) + sta->sta.wme = true; + + if (sta && elems->ht_operation && elems->ht_cap_elem && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) { + /* we both use HT */ + struct ieee80211_ht_cap htcap_ie; + struct cfg80211_chan_def chandef; + enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth; + + ieee80211_ht_oper_to_chandef(channel, + elems->ht_operation, + &chandef); + + memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie)); + rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, + &htcap_ie, + sta); + + if (elems->vht_operation && elems->vht_cap_elem && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20 && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_40) { + /* we both use VHT */ + struct ieee80211_vht_cap cap_ie; + struct ieee80211_sta_vht_cap cap = sta->sta.vht_cap; + + ieee80211_vht_oper_to_chandef(channel, + elems->vht_operation, + &chandef); + memcpy(&cap_ie, elems->vht_cap_elem, sizeof(cap_ie)); + ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, + &cap_ie, sta); + if (memcmp(&cap, &sta->sta.vht_cap, sizeof(cap))) + rates_updated |= true; } - if (sta && rates_updated) { - u32 changed = IEEE80211_RC_SUPP_RATES_CHANGED; - u8 rx_nss = sta->sta.rx_nss; + if (bw != sta->sta.bandwidth) + rates_updated |= true; - /* Force rx_nss recalculation */ - sta->sta.rx_nss = 0; - rate_control_rate_init(sta); - if (sta->sta.rx_nss != rx_nss) - changed |= IEEE80211_RC_NSS_CHANGED; + if (!cfg80211_chandef_compatible(&sdata->u.ibss.chandef, + &chandef)) + WARN_ON_ONCE(1); + } - drv_sta_rc_update(local, sdata, &sta->sta, changed); - } + if (sta && rates_updated) { + u32 changed = IEEE80211_RC_SUPP_RATES_CHANGED; + u8 rx_nss = sta->sta.rx_nss; - rcu_read_unlock(); + /* Force rx_nss recalculation */ + sta->sta.rx_nss = 0; + rate_control_rate_init(sta); + if (sta->sta.rx_nss != rx_nss) + changed |= IEEE80211_RC_NSS_CHANGED; + + drv_sta_rc_update(local, sdata, &sta->sta, changed); } + rcu_read_unlock(); +} + +static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, + struct ieee80211_mgmt *mgmt, size_t len, + struct ieee80211_rx_status *rx_status, + struct ieee802_11_elems *elems) +{ + struct ieee80211_local *local = sdata->local; + struct cfg80211_bss *cbss; + struct ieee80211_bss *bss; + struct ieee80211_channel *channel; + u64 beacon_timestamp, rx_timestamp; + u32 supp_rates = 0; + enum ieee80211_band band = rx_status->band; + + channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); + if (!channel) + return; + + ieee80211_update_sta_info(sdata, mgmt, len, rx_status, elems, channel); + bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, channel); if (!bss) @@ -1273,7 +1301,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef); ieee80211_request_ibss_scan(sdata, ifibss->ssid, ifibss->ssid_len, - NULL, scan_width); + NULL, 0, scan_width); } static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) @@ -1304,14 +1332,82 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) if (ifibss->privacy) capability |= WLAN_CAPABILITY_PRIVACY; - else - sdata->drop_unencrypted = 0; __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, &ifibss->chandef, ifibss->basic_rates, capability, 0, true); } +static unsigned ibss_setup_channels(struct wiphy *wiphy, + struct ieee80211_channel **channels, + unsigned int channels_max, + u32 center_freq, u32 width) +{ + struct ieee80211_channel *chan = NULL; + unsigned int n_chan = 0; + u32 start_freq, end_freq, freq; + + if (width <= 20) { + start_freq = center_freq; + end_freq = center_freq; + } else { + start_freq = center_freq - width / 2 + 10; + end_freq = center_freq + width / 2 - 10; + } + + for (freq = start_freq; freq <= end_freq; freq += 20) { + chan = ieee80211_get_channel(wiphy, freq); + if (!chan) + continue; + if (n_chan >= channels_max) + return n_chan; + + channels[n_chan] = chan; + n_chan++; + } + + return n_chan; +} + +static unsigned int +ieee80211_ibss_setup_scan_channels(struct wiphy *wiphy, + const struct cfg80211_chan_def *chandef, + struct ieee80211_channel **channels, + unsigned int channels_max) +{ + unsigned int n_chan = 0; + u32 width, cf1, cf2 = 0; + + switch (chandef->width) { + case NL80211_CHAN_WIDTH_40: + width = 40; + break; + case NL80211_CHAN_WIDTH_80P80: + cf2 = chandef->center_freq2; + /* fall through */ + case NL80211_CHAN_WIDTH_80: + width = 80; + break; + case NL80211_CHAN_WIDTH_160: + width = 160; + break; + default: + width = 20; + break; + } + + cf1 = chandef->center_freq1; + + n_chan = ibss_setup_channels(wiphy, channels, channels_max, cf1, width); + + if (cf2) + n_chan += ibss_setup_channels(wiphy, &channels[n_chan], + channels_max - n_chan, cf2, + width); + + return n_chan; +} + /* * This function is called with state == IEEE80211_IBSS_MLME_SEARCH */ @@ -1325,7 +1421,6 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) const u8 *bssid = NULL; enum nl80211_bss_scan_width scan_width; int active_ibss; - u16 capability; sdata_assert_lock(sdata); @@ -1335,9 +1430,6 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) if (active_ibss) return; - capability = WLAN_CAPABILITY_IBSS; - if (ifibss->privacy) - capability |= WLAN_CAPABILITY_PRIVACY; if (ifibss->fixed_bssid) bssid = ifibss->bssid; if (ifibss->fixed_channel) @@ -1346,8 +1438,8 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) bssid = ifibss->bssid; cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, ifibss->ssid, ifibss->ssid_len, - WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, - capability); + IEEE80211_BSS_TYPE_IBSS, + IEEE80211_PRIVACY(ifibss->privacy)); if (cbss) { struct ieee80211_bss *bss; @@ -1381,11 +1473,18 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) /* Selected IBSS not found in current scan results - try to scan */ if (time_after(jiffies, ifibss->last_scan_completed + IEEE80211_SCAN_INTERVAL)) { + struct ieee80211_channel *channels[8]; + unsigned int num; + sdata_info(sdata, "Trigger new scan to find an IBSS to join\n"); + num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy, + &ifibss->chandef, + channels, + ARRAY_SIZE(channels)); scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef); ieee80211_request_ibss_scan(sdata, ifibss->ssid, - ifibss->ssid_len, chan, + ifibss->ssid_len, channels, num, scan_width); } else { int interval = IEEE80211_SCAN_INTERVAL; @@ -1742,7 +1841,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) ieee80211_ibss_disconnect(sdata); ifibss->ssid_len = 0; - memset(ifibss->bssid, 0, ETH_ALEN); + eth_zero_addr(ifibss->bssid); /* remove beacon */ kfree(sdata->u.ibss.ie); |