Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 505 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
new file mode 100644
index 0000000..5fcb2de
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -0,0 +1,505 @@
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <linux/of.h>
+#include "mt76.h"
+
+#define CHAN2G(_idx, _freq) {			\
+	.band = NL80211_BAND_2GHZ,		\
+	.center_freq = (_freq),			\
+	.hw_value = (_idx),			\
+	.max_power = 30,			\
+}
+
+#define CHAN5G(_idx, _freq) {			\
+	.band = NL80211_BAND_5GHZ,		\
+	.center_freq = (_freq),			\
+	.hw_value = (_idx),			\
+	.max_power = 30,			\
+}
+
+static const struct ieee80211_channel mt76_channels_2ghz[] = {
+	CHAN2G(1, 2412),
+	CHAN2G(2, 2417),
+	CHAN2G(3, 2422),
+	CHAN2G(4, 2427),
+	CHAN2G(5, 2432),
+	CHAN2G(6, 2437),
+	CHAN2G(7, 2442),
+	CHAN2G(8, 2447),
+	CHAN2G(9, 2452),
+	CHAN2G(10, 2457),
+	CHAN2G(11, 2462),
+	CHAN2G(12, 2467),
+	CHAN2G(13, 2472),
+	CHAN2G(14, 2484),
+};
+
+static const struct ieee80211_channel mt76_channels_5ghz[] = {
+	CHAN5G(36, 5180),
+	CHAN5G(40, 5200),
+	CHAN5G(44, 5220),
+	CHAN5G(48, 5240),
+
+	CHAN5G(52, 5260),
+	CHAN5G(56, 5280),
+	CHAN5G(60, 5300),
+	CHAN5G(64, 5320),
+
+	CHAN5G(100, 5500),
+	CHAN5G(104, 5520),
+	CHAN5G(108, 5540),
+	CHAN5G(112, 5560),
+	CHAN5G(116, 5580),
+	CHAN5G(120, 5600),
+	CHAN5G(124, 5620),
+	CHAN5G(128, 5640),
+	CHAN5G(132, 5660),
+	CHAN5G(136, 5680),
+	CHAN5G(140, 5700),
+
+	CHAN5G(149, 5745),
+	CHAN5G(153, 5765),
+	CHAN5G(157, 5785),
+	CHAN5G(161, 5805),
+	CHAN5G(165, 5825),
+};
+
+static const struct ieee80211_tpt_blink mt76_tpt_blink[] = {
+	{ .throughput =   0 * 1024, .blink_time = 334 },
+	{ .throughput =   1 * 1024, .blink_time = 260 },
+	{ .throughput =   5 * 1024, .blink_time = 220 },
+	{ .throughput =  10 * 1024, .blink_time = 190 },
+	{ .throughput =  20 * 1024, .blink_time = 170 },
+	{ .throughput =  50 * 1024, .blink_time = 150 },
+	{ .throughput =  70 * 1024, .blink_time = 130 },
+	{ .throughput = 100 * 1024, .blink_time = 110 },
+	{ .throughput = 200 * 1024, .blink_time =  80 },
+	{ .throughput = 300 * 1024, .blink_time =  50 },
+};
+
+static int mt76_led_init(struct mt76_dev *dev)
+{
+	struct device_node *np = dev->dev->of_node;
+	struct ieee80211_hw *hw = dev->hw;
+	int led_pin;
+
+	if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set)
+		return 0;
+
+	snprintf(dev->led_name, sizeof(dev->led_name),
+		 "mt76-%s", wiphy_name(hw->wiphy));
+
+	dev->led_cdev.name = dev->led_name;
+	dev->led_cdev.default_trigger =
+		ieee80211_create_tpt_led_trigger(hw,
+					IEEE80211_TPT_LEDTRIG_FL_RADIO,
+					mt76_tpt_blink,
+					ARRAY_SIZE(mt76_tpt_blink));
+
+	np = of_get_child_by_name(np, "led");
+	if (np) {
+		if (!of_property_read_u32(np, "led-sources", &led_pin))
+			dev->led_pin = led_pin;
+		dev->led_al = of_property_read_bool(np, "led-active-low");
+	}
+
+	return devm_led_classdev_register(dev->dev, &dev->led_cdev);
+}
+
+static int
+mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
+		const struct ieee80211_channel *chan, int n_chan,
+		struct ieee80211_rate *rates, int n_rates, bool vht)
+{
+	struct ieee80211_supported_band *sband = &msband->sband;
+	struct ieee80211_sta_ht_cap *ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap;
+	void *chanlist;
+	u16 mcs_map;
+	int size;
+
+	size = n_chan * sizeof(*chan);
+	chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
+	if (!chanlist)
+		return -ENOMEM;
+
+	msband->chan = devm_kzalloc(dev->dev, n_chan * sizeof(*msband->chan),
+				    GFP_KERNEL);
+	if (!msband->chan)
+		return -ENOMEM;
+
+	sband->channels = chanlist;
+	sband->n_channels = n_chan;
+	sband->bitrates = rates;
+	sband->n_bitrates = n_rates;
+	dev->chandef.chan = &sband->channels[0];
+
+	ht_cap = &sband->ht_cap;
+	ht_cap->ht_supported = true;
+	ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+		       IEEE80211_HT_CAP_GRN_FLD |
+		       IEEE80211_HT_CAP_SGI_20 |
+		       IEEE80211_HT_CAP_SGI_40 |
+		       IEEE80211_HT_CAP_TX_STBC |
+		       (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
+
+	ht_cap->mcs.rx_mask[0] = 0xff;
+	ht_cap->mcs.rx_mask[1] = 0xff;
+	ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
+	ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
+	ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
+
+	if (!vht)
+		return 0;
+
+	vht_cap = &sband->vht_cap;
+	vht_cap->vht_supported = true;
+
+	mcs_map = (IEEE80211_VHT_MCS_SUPPORT_0_9 << (0 * 2)) |
+		  (IEEE80211_VHT_MCS_SUPPORT_0_9 << (1 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (2 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (3 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (4 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (5 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (6 * 2)) |
+		  (IEEE80211_VHT_MCS_NOT_SUPPORTED << (7 * 2));
+
+	vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
+	vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
+	vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC |
+			IEEE80211_VHT_CAP_TXSTBC |
+			IEEE80211_VHT_CAP_RXSTBC_1 |
+			IEEE80211_VHT_CAP_SHORT_GI_80;
+
+	return 0;
+}
+
+static int
+mt76_init_sband_2g(struct mt76_dev *dev, struct ieee80211_rate *rates,
+		   int n_rates)
+{
+	dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = &dev->sband_2g.sband;
+
+	return mt76_init_sband(dev, &dev->sband_2g,
+			       mt76_channels_2ghz,
+			       ARRAY_SIZE(mt76_channels_2ghz),
+			       rates, n_rates, false);
+}
+
+static int
+mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
+		   int n_rates, bool vht)
+{
+	dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = &dev->sband_5g.sband;
+
+	return mt76_init_sband(dev, &dev->sband_5g,
+			       mt76_channels_5ghz,
+			       ARRAY_SIZE(mt76_channels_5ghz),
+			       rates, n_rates, vht);
+}
+
+static void
+mt76_check_sband(struct mt76_dev *dev, int band)
+{
+	struct ieee80211_supported_band *sband = dev->hw->wiphy->bands[band];
+	bool found = false;
+	int i;
+
+	if (!sband)
+		return;
+
+	for (i = 0; i < sband->n_channels; i++) {
+		if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED)
+			continue;
+
+		found = true;
+		break;
+	}
+
+	if (found)
+		return;
+
+	sband->n_channels = 0;
+	dev->hw->wiphy->bands[band] = NULL;
+}
+
+int mt76_register_device(struct mt76_dev *dev, bool vht,
+			 struct ieee80211_rate *rates, int n_rates)
+{
+	struct ieee80211_hw *hw = dev->hw;
+	struct wiphy *wiphy = hw->wiphy;
+	int ret;
+
+	dev_set_drvdata(dev->dev, dev);
+
+	spin_lock_init(&dev->lock);
+	spin_lock_init(&dev->cc_lock);
+	INIT_LIST_HEAD(&dev->txwi_cache);
+
+	SET_IEEE80211_DEV(hw, dev->dev);
+	SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
+
+	wiphy->interface_modes =
+		BIT(NL80211_IFTYPE_STATION) |
+		BIT(NL80211_IFTYPE_AP) |
+#ifdef CONFIG_MAC80211_MESH
+		BIT(NL80211_IFTYPE_MESH_POINT) |
+#endif
+		BIT(NL80211_IFTYPE_ADHOC);
+
+	wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
+
+	hw->txq_data_size = sizeof(struct mt76_txq);
+	hw->max_tx_fragments = 16;
+
+	ieee80211_hw_set(hw, SIGNAL_DBM);
+	ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
+	ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
+	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
+	ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
+	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
+	ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
+	ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
+	ieee80211_hw_set(hw, TX_AMSDU);
+	ieee80211_hw_set(hw, TX_FRAG_LIST);
+	ieee80211_hw_set(hw, MFP_CAPABLE);
+
+	wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+
+	if (dev->cap.has_2ghz) {
+		ret = mt76_init_sband_2g(dev, rates, n_rates);
+		if (ret)
+			return ret;
+	}
+
+	if (dev->cap.has_5ghz) {
+		ret = mt76_init_sband_5g(dev, rates + 4, n_rates - 4, vht);
+		if (ret)
+			return ret;
+	}
+
+	wiphy_read_of_freq_limits(dev->hw->wiphy);
+	mt76_check_sband(dev, NL80211_BAND_2GHZ);
+	mt76_check_sband(dev, NL80211_BAND_5GHZ);
+
+	ret = mt76_led_init(dev);
+	if (ret)
+		return ret;
+
+	return ieee80211_register_hw(hw);
+}
+EXPORT_SYMBOL_GPL(mt76_register_device);
+
+void mt76_unregister_device(struct mt76_dev *dev)
+{
+	struct ieee80211_hw *hw = dev->hw;
+
+	ieee80211_unregister_hw(hw);
+	mt76_tx_free(dev);
+}
+EXPORT_SYMBOL_GPL(mt76_unregister_device);
+
+void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
+{
+	if (!test_bit(MT76_STATE_RUNNING, &dev->state)) {
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	__skb_queue_tail(&dev->rx_skb[q], skb);
+}
+EXPORT_SYMBOL_GPL(mt76_rx);
+
+void mt76_set_channel(struct mt76_dev *dev)
+{
+	struct ieee80211_hw *hw = dev->hw;
+	struct cfg80211_chan_def *chandef = &hw->conf.chandef;
+	struct mt76_channel_state *state;
+	bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
+
+	if (dev->drv->update_survey)
+		dev->drv->update_survey(dev);
+
+	dev->chandef = *chandef;
+
+	if (!offchannel)
+		dev->main_chan = chandef->chan;
+
+	if (chandef->chan != dev->main_chan) {
+		state = mt76_channel_state(dev, chandef->chan);
+		memset(state, 0, sizeof(*state));
+	}
+}
+EXPORT_SYMBOL_GPL(mt76_set_channel);
+
+int mt76_get_survey(struct ieee80211_hw *hw, int idx,
+		    struct survey_info *survey)
+{
+	struct mt76_dev *dev = hw->priv;
+	struct mt76_sband *sband;
+	struct ieee80211_channel *chan;
+	struct mt76_channel_state *state;
+	int ret = 0;
+
+	if (idx == 0 && dev->drv->update_survey)
+		dev->drv->update_survey(dev);
+
+	sband = &dev->sband_2g;
+	if (idx >= sband->sband.n_channels) {
+		idx -= sband->sband.n_channels;
+		sband = &dev->sband_5g;
+	}
+
+	if (idx >= sband->sband.n_channels)
+		return -ENOENT;
+
+	chan = &sband->sband.channels[idx];
+	state = mt76_channel_state(dev, chan);
+
+	memset(survey, 0, sizeof(*survey));
+	survey->channel = chan;
+	survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY;
+	if (chan == dev->main_chan)
+		survey->filled |= SURVEY_INFO_IN_USE;
+
+	spin_lock_bh(&dev->cc_lock);
+	survey->time = div_u64(state->cc_active, 1000);
+	survey->time_busy = div_u64(state->cc_busy, 1000);
+	spin_unlock_bh(&dev->cc_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(mt76_get_survey);
+
+void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
+			 struct ieee80211_key_conf *key)
+{
+	struct ieee80211_key_seq seq;
+	int i;
+
+	wcid->rx_check_pn = false;
+
+	if (!key)
+		return;
+
+	if (key->cipher == WLAN_CIPHER_SUITE_CCMP)
+		wcid->rx_check_pn = true;
+
+	for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
+		ieee80211_get_key_rx_seq(key, i, &seq);
+		memcpy(wcid->rx_key_pn[i], seq.ccmp.pn, sizeof(seq.ccmp.pn));
+	}
+}
+EXPORT_SYMBOL(mt76_wcid_key_setup);
+
+static struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb)
+{
+	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+	struct mt76_rx_status mstat;
+
+	mstat = *((struct mt76_rx_status *) skb->cb);
+	memset(status, 0, sizeof(*status));
+
+	status->flag = mstat.flag;
+	status->freq = mstat.freq;
+	status->enc_flags = mstat.enc_flags;
+	status->encoding = mstat.encoding;
+	status->bw = mstat.bw;
+	status->rate_idx = mstat.rate_idx;
+	status->nss = mstat.nss;
+	status->band = mstat.band;
+	status->signal = mstat.signal;
+	status->chains = mstat.chains;
+
+	BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
+	BUILD_BUG_ON(sizeof(status->chain_signal) != sizeof(mstat.chain_signal));
+	memcpy(status->chain_signal, mstat.chain_signal, sizeof(mstat.chain_signal));
+
+	return wcid_to_sta(mstat.wcid);
+}
+
+static int
+mt76_check_ccmp_pn(struct sk_buff *skb)
+{
+	struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
+	struct mt76_wcid *wcid = status->wcid;
+	struct ieee80211_hdr *hdr;
+	int ret;
+
+	if (!(status->flag & RX_FLAG_DECRYPTED))
+		return 0;
+
+	if (!wcid || !wcid->rx_check_pn)
+		return 0;
+
+	if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
+		/*
+		 * Validate the first fragment both here and in mac80211
+		 * All further fragments will be validated by mac80211 only.
+		 */
+		hdr = (struct ieee80211_hdr *) skb->data;
+		if (ieee80211_is_frag(hdr) &&
+		    !ieee80211_is_first_frag(hdr->frame_control))
+			return 0;
+	}
+
+	BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0]));
+	ret = memcmp(status->iv, wcid->rx_key_pn[status->tid],
+		     sizeof(status->iv));
+	if (ret <= 0)
+		return -EINVAL; /* replay */
+
+	memcpy(wcid->rx_key_pn[status->tid], status->iv, sizeof(status->iv));
+
+	if (status->flag & RX_FLAG_IV_STRIPPED)
+		status->flag |= RX_FLAG_PN_VALIDATED;
+
+	return 0;
+}
+
+void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
+		      int queue)
+{
+	struct napi_struct *napi = NULL;
+	struct ieee80211_sta *sta;
+	struct sk_buff *skb;
+
+	if (queue >= 0)
+	    napi = &dev->napi[queue];
+
+	while ((skb = __skb_dequeue(frames)) != NULL) {
+		if (mt76_check_ccmp_pn(skb)) {
+			dev_kfree_skb(skb);
+			continue;
+		}
+
+		sta = mt76_rx_convert(skb);
+		ieee80211_rx_napi(dev->hw, sta, skb, napi);
+	}
+}
+
+void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q)
+{
+	struct sk_buff_head frames;
+	struct sk_buff *skb;
+
+	__skb_queue_head_init(&frames);
+
+	while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL)
+		mt76_rx_aggr_reorder(skb, &frames);
+
+	mt76_rx_complete(dev, &frames, q);
+}