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

Pull networking updates from David Miller:

 1) BBR TCP congestion control, from Neal Cardwell, Yuchung Cheng and
    co. at Google. https://lwn.net/Articles/701165/

 2) Do TCP Small Queues for retransmits, from Eric Dumazet.

 3) Support collect_md mode for all IPV4 and IPV6 tunnels, from Alexei
    Starovoitov.

 4) Allow cls_flower to classify packets in ip tunnels, from Amir Vadai.

 5) Support DSA tagging in older mv88e6xxx switches, from Andrew Lunn.

 6) Support GMAC protocol in iwlwifi mwm, from Ayala Beker.

 7) Support ndo_poll_controller in mlx5, from Calvin Owens.

 8) Move VRF processing to an output hook and allow l3mdev to be
    loopback, from David Ahern.

 9) Support SOCK_DESTROY for UDP sockets. Also from David Ahern.

10) Congestion control in RXRPC, from David Howells.

11) Support geneve RX offload in ixgbe, from Emil Tantilov.

12) When hitting pressure for new incoming TCP data SKBs, perform a
    partial rathern than a full purge of the OFO queue (which could be
    huge). From Eric Dumazet.

13) Convert XFRM state and policy lookups to RCU, from Florian Westphal.

14) Support RX network flow classification to igb, from Gangfeng Huang.

15) Hardware offloading of eBPF in nfp driver, from Jakub Kicinski.

16) New skbmod packet action, from Jamal Hadi Salim.

17) Remove some inefficiencies in snmp proc output, from Jia He.

18) Add FIB notifications to properly propagate route changes to
    hardware which is doing forwarding offloading. From Jiri Pirko.

19) New dsa driver for qca8xxx chips, from John Crispin.

20) Implement RFC7559 ipv6 router solicitation backoff, from Maciej
    Żenczykowski.

21) Add L3 mode to ipvlan, from Mahesh Bandewar.

22) Support 802.1ad in mlx4, from Moshe Shemesh.

23) Support hardware LRO in mediatek driver, from Nelson Chang.

24) Add TC offloading to mlx5, from Or Gerlitz.

25) Convert various drivers to ethtool ksettings interfaces, from
    Philippe Reynes.

26) TX max rate limiting for cxgb4, from Rahul Lakkireddy.

27) NAPI support for ath10k, from Rajkumar Manoharan.

28) Support XDP in mlx5, from Rana Shahout and Saeed Mahameed.

29) UDP replicast support in TIPC, from Richard Alpe.

30) Per-queue statistics for qed driver, from Sudarsana Reddy Kalluru.

31) Support BQL in thunderx driver, from Sunil Goutham.

32) TSO support in alx driver, from Tobias Regnery.

33) Add stream parser engine and use it in kcm.

34) Support async DHCP replies in ipconfig module, from Uwe
    Kleine-König.

35) DSA port fast aging for mv88e6xxx driver, from Vivien Didelot.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1715 commits)
  mlxsw: switchx2: Fix misuse of hard_header_len
  mlxsw: spectrum: Fix misuse of hard_header_len
  net/faraday: Stop NCSI device on shutdown
  net/ncsi: Introduce ncsi_stop_dev()
  net/ncsi: Rework the channel monitoring
  net/ncsi: Allow to extend NCSI request properties
  net/ncsi: Rework request index allocation
  net/ncsi: Don't probe on the reserved channel ID (0x1f)
  net/ncsi: Introduce NCSI_RESERVED_CHANNEL
  net/ncsi: Avoid unused-value build warning from ia64-linux-gcc
  net: Add netdev all_adj_list refcnt propagation to fix panic
  net: phy: Add Edge-rate driver for Microsemi PHYs.
  vmxnet3: Wake queue from reset work
  i40e: avoid NULL pointer dereference and recursive errors on early PCI error
  qed: Add RoCE ll2 & GSI support
  qed: Add support for memory registeration verbs
  qed: Add support for QP verbs
  qed: PD,PKEY and CQ verb support
  qed: Add support for RoCE hw init
  qede: Add qedr framework
  ...

1 files changed, 35 insertions, 125 deletions

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 2906c1004e1a..f56e2f487d09 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -71,138 +71,45 @@ DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
 	local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 
-struct aqm_info {
-	struct ieee80211_local *local;
-	size_t size;
-	size_t len;
-	unsigned char buf[0];
-};
-
-#define AQM_HDR_LEN 200
-#define AQM_HW_ENTRY_LEN 40
-#define AQM_TXQ_ENTRY_LEN 110
-
-static int aqm_open(struct inode *inode, struct file *file)
+static ssize_t aqm_read(struct file *file,
+			char __user *user_buf,
+			size_t count,
+			loff_t *ppos)
 {
-	struct ieee80211_local *local = inode->i_private;
-	struct ieee80211_sub_if_data *sdata;
-	struct sta_info *sta;
-	struct txq_info *txqi;
+	struct ieee80211_local *local = file->private_data;
 	struct fq *fq = &local->fq;
-	struct aqm_info *info = NULL;
+	char buf[200];
 	int len = 0;
-	int i;
-
-	if (!local->ops->wake_tx_queue)
-		return -EOPNOTSUPP;
-
-	len += AQM_HDR_LEN;
-	len += 6 * AQM_HW_ENTRY_LEN;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list)
-		len += AQM_TXQ_ENTRY_LEN;
-	list_for_each_entry_rcu(sta, &local->sta_list, list)
-		len += AQM_TXQ_ENTRY_LEN * ARRAY_SIZE(sta->sta.txq);
-	rcu_read_unlock();
-
-	info = vmalloc(len);
-	if (!info)
-		return -ENOMEM;
 
 	spin_lock_bh(&local->fq.lock);
 	rcu_read_lock();
 
-	file->private_data = info;
-	info->local = local;
-	info->size = len;
-	len = 0;
-
-	len += scnprintf(info->buf + len, info->size - len,
-			 "* hw\n"
-			 "access name value\n"
-			 "R fq_flows_cnt %u\n"
-			 "R fq_backlog %u\n"
-			 "R fq_overlimit %u\n"
-			 "R fq_collisions %u\n"
-			 "RW fq_limit %u\n"
-			 "RW fq_quantum %u\n",
-			 fq->flows_cnt,
-			 fq->backlog,
-			 fq->overlimit,
-			 fq->collisions,
-			 fq->limit,
-			 fq->quantum);
-
-	len += scnprintf(info->buf + len,
-			 info->size - len,
-			 "* vif\n"
-			 "ifname addr ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");
-
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-		txqi = to_txq_info(sdata->vif.txq);
-		len += scnprintf(info->buf + len, info->size - len,
-				 "%s %pM %u %u %u %u %u %u %u %u\n",
-				 sdata->name,
-				 sdata->vif.addr,
-				 txqi->txq.ac,
-				 txqi->tin.backlog_bytes,
-				 txqi->tin.backlog_packets,
-				 txqi->tin.flows,
-				 txqi->tin.overlimit,
-				 txqi->tin.collisions,
-				 txqi->tin.tx_bytes,
-				 txqi->tin.tx_packets);
-	}
-
-	len += scnprintf(info->buf + len,
-			 info->size - len,
-			 "* sta\n"
-			 "ifname addr tid ac backlog-bytes backlog-packets flows overlimit collisions tx-bytes tx-packets\n");
-
-	list_for_each_entry_rcu(sta, &local->sta_list, list) {
-		sdata = sta->sdata;
-		for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
-			txqi = to_txq_info(sta->sta.txq[i]);
-			len += scnprintf(info->buf + len, info->size - len,
-					 "%s %pM %d %d %u %u %u %u %u %u %u\n",
-					 sdata->name,
-					 sta->sta.addr,
-					 txqi->txq.tid,
-					 txqi->txq.ac,
-					 txqi->tin.backlog_bytes,
-					 txqi->tin.backlog_packets,
-					 txqi->tin.flows,
-					 txqi->tin.overlimit,
-					 txqi->tin.collisions,
-					 txqi->tin.tx_bytes,
-					 txqi->tin.tx_packets);
-		}
-	}
-
-	info->len = len;
+	len = scnprintf(buf, sizeof(buf),
+			"access name value\n"
+			"R fq_flows_cnt %u\n"
+			"R fq_backlog %u\n"
+			"R fq_overlimit %u\n"
+			"R fq_overmemory %u\n"
+			"R fq_collisions %u\n"
+			"R fq_memory_usage %u\n"
+			"RW fq_memory_limit %u\n"
+			"RW fq_limit %u\n"
+			"RW fq_quantum %u\n",
+			fq->flows_cnt,
+			fq->backlog,
+			fq->overmemory,
+			fq->overlimit,
+			fq->collisions,
+			fq->memory_usage,
+			fq->memory_limit,
+			fq->limit,
+			fq->quantum);
 
 	rcu_read_unlock();
 	spin_unlock_bh(&local->fq.lock);
 
-	return 0;
-}
-
-static int aqm_release(struct inode *inode, struct file *file)
-{
-	vfree(file->private_data);
-	return 0;
-}
-
-static ssize_t aqm_read(struct file *file,
-			char __user *user_buf,
-			size_t count,
-			loff_t *ppos)
-{
-	struct aqm_info *info = file->private_data;
-
 	return simple_read_from_buffer(user_buf, count, ppos,
-				       info->buf, info->len);
+				       buf, len);
 }
 
 static ssize_t aqm_write(struct file *file,
@@ -210,8 +117,7 @@ static ssize_t aqm_write(struct file *file,
 			 size_t count,
 			 loff_t *ppos)
 {
-	struct aqm_info *info = file->private_data;
-	struct ieee80211_local *local = info->local;
+	struct ieee80211_local *local = file->private_data;
 	char buf[100];
 	size_t len;
 
@@ -228,6 +134,8 @@ static ssize_t aqm_write(struct file *file,
 
 	if (sscanf(buf, "fq_limit %u", &local->fq.limit) == 1)
 		return count;
+	else if (sscanf(buf, "fq_memory_limit %u", &local->fq.memory_limit) == 1)
+		return count;
 	else if (sscanf(buf, "fq_quantum %u", &local->fq.quantum) == 1)
 		return count;
 
@@ -237,8 +145,7 @@ static ssize_t aqm_write(struct file *file,
 static const struct file_operations aqm_ops = {
 	.write = aqm_write,
 	.read = aqm_read,
-	.open = aqm_open,
-	.release = aqm_release,
+	.open = simple_open,
 	.llseek = default_llseek,
 };
 
@@ -302,6 +209,7 @@ static const char *hw_flag_names[] = {
 	FLAG(USES_RSS),
 	FLAG(TX_AMSDU),
 	FLAG(TX_FRAG_LIST),
+	FLAG(REPORTS_LOW_ACK),
 #undef FLAG
 };
 
@@ -428,7 +336,9 @@ void debugfs_hw_add(struct ieee80211_local *local)
 	DEBUGFS_ADD(hwflags);
 	DEBUGFS_ADD(user_power);
 	DEBUGFS_ADD(power);
-	DEBUGFS_ADD_MODE(aqm, 0600);
+
+	if (local->ops->wake_tx_queue)
+		DEBUGFS_ADD_MODE(aqm, 0600);
 
 	statsd = debugfs_create_dir("statistics", phyd);