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

Pull networking updates from David Miller:

 1) Add VF IPSEC offload support in ixgbe, from Shannon Nelson.

 2) Add zero-copy AF_XDP support to i40e, from Björn Töpel.

 3) All in-tree drivers are converted to {g,s}et_link_ksettings() so we
    can get rid of the {g,s}et_settings ethtool callbacks, from Michal
    Kubecek.

 4) Add software timestamping to veth driver, from Michael Walle.

 5) More work to make packet classifiers and actions lockless, from Vlad
    Buslov.

 6) Support sticky FDB entries in bridge, from Nikolay Aleksandrov.

 7) Add ipv6 version of IP_MULTICAST_ALL sockopt, from Andre Naujoks.

 8) Support batching of XDP buffers in vhost_net, from Jason Wang.

 9) Add flow dissector BPF hook, from Petar Penkov.

10) i40e vf --> generic iavf conversion, from Jesse Brandeburg.

11) Add NLA_REJECT netlink attribute policy type, to signal when users
    provide attributes in situations which don't make sense. From
    Johannes Berg.

12) Switch TCP and fair-queue scheduler over to earliest departure time
    model. From Eric Dumazet.

13) Improve guest receive performance by doing rx busy polling in tx
    path of vhost networking driver, from Tonghao Zhang.

14) Add per-cgroup local storage to bpf

15) Add reference tracking to BPF, from Joe Stringer. The verifier can
    now make sure that references taken to objects are properly released
    by the program.

16) Support in-place encryption in TLS, from Vakul Garg.

17) Add new taprio packet scheduler, from Vinicius Costa Gomes.

18) Lots of selftests additions, too numerous to mention one by one here
    but all of which are very much appreciated.

19) Support offloading of eBPF programs containing BPF to BPF calls in
    nfp driver, frm Quentin Monnet.

20) Move dpaa2_ptp driver out of staging, from Yangbo Lu.

21) Lots of u32 classifier cleanups and simplifications, from Al Viro.

22) Add new strict versions of netlink message parsers, and enable them
    for some situations. From David Ahern.

23) Evict neighbour entries on carrier down, also from David Ahern.

24) Support BPF sk_msg verdict programs with kTLS, from Daniel Borkmann
    and John Fastabend.

25) Add support for filtering route dumps, from David Ahern.

26) New igc Intel driver for 2.5G parts, from Sasha Neftin et al.

27) Allow vxlan enslavement to bridges in mlxsw driver, from Ido
    Schimmel.

28) Add queue and stack map types to eBPF, from Mauricio Vasquez B.

29) Add back byte-queue-limit support to r8169, with all the bug fixes
    in other areas of the driver it works now! From Florian Westphal and
    Heiner Kallweit.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2147 commits)
  tcp: add tcp_reset_xmit_timer() helper
  qed: Fix static checker warning
  Revert "be2net: remove desc field from be_eq_obj"
  Revert "net: simplify sock_poll_wait"
  net: socionext: Reset tx queue in ndo_stop
  net: socionext: Add dummy PHY register read in phy_write()
  net: socionext: Stop PHY before resetting netsec
  net: stmmac: Set OWN bit for jumbo frames
  arm64: dts: stratix10: Support Ethernet Jumbo frame
  tls: Add maintainers
  net: ethernet: ti: cpsw: unsync mcast entries while switch promisc mode
  octeontx2-af: Support for NIXLF's UCAST/PROMISC/ALLMULTI modes
  octeontx2-af: Support for setting MAC address
  octeontx2-af: Support for changing RSS algorithm
  octeontx2-af: NIX Rx flowkey configuration for RSS
  octeontx2-af: Install ucast and bcast pkt forwarding rules
  octeontx2-af: Add LMAC channel info to NIXLF_ALLOC response
  octeontx2-af: NPC MCAM and LDATA extract minimal configuration
  octeontx2-af: Enable packet length and csum validation
  octeontx2-af: Support for VTAG strip and capture
  ...

1 files changed, 154 insertions, 0 deletions

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index a567bc273ffc..9e7b8933d30c 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -957,6 +957,47 @@ static void rt2800_rate_from_status(struct skb_frame_desc *skbdesc,
 	skbdesc->tx_rate_flags = flags;
 }
 
+static bool rt2800_txdone_entry_check(struct queue_entry *entry, u32 reg)
+{
+	__le32 *txwi;
+	u32 word;
+	int wcid, ack, pid;
+	int tx_wcid, tx_ack, tx_pid, is_agg;
+
+	/*
+	 * This frames has returned with an IO error,
+	 * so the status report is not intended for this
+	 * frame.
+	 */
+	if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
+		return false;
+
+	wcid	= rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
+	ack	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
+	pid	= rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
+	is_agg	= rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
+
+	/*
+	 * Validate if this TX status report is intended for
+	 * this entry by comparing the WCID/ACK/PID fields.
+	 */
+	txwi = rt2800_drv_get_txwi(entry);
+
+	word = rt2x00_desc_read(txwi, 1);
+	tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
+	tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
+	tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
+
+	if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
+		rt2x00_dbg(entry->queue->rt2x00dev,
+			   "TX status report missed for queue %d entry %d\n",
+			   entry->queue->qid, entry->entry_idx);
+		return false;
+	}
+
+	return true;
+}
+
 void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
 			 bool match)
 {
@@ -1059,6 +1100,119 @@ void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
 }
 EXPORT_SYMBOL_GPL(rt2800_txdone_entry);
 
+void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	struct queue_entry *entry;
+	u32 reg;
+	u8 qid;
+	bool match;
+
+	while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
+		/*
+		 * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
+		 * guaranteed to be one of the TX QIDs .
+		 */
+		qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
+		queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
+
+		if (unlikely(rt2x00queue_empty(queue))) {
+			rt2x00_dbg(rt2x00dev, "Got TX status for an empty queue %u, dropping\n",
+				   qid);
+			break;
+		}
+
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+
+		if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+			     !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
+			rt2x00_warn(rt2x00dev, "Data pending for entry %u in queue %u\n",
+				    entry->entry_idx, qid);
+			break;
+		}
+
+		match = rt2800_txdone_entry_check(entry, reg);
+		rt2800_txdone_entry(entry, reg, rt2800_drv_get_txwi(entry), match);
+	}
+}
+EXPORT_SYMBOL_GPL(rt2800_txdone);
+
+static inline bool rt2800_entry_txstatus_timeout(struct rt2x00_dev *rt2x00dev,
+						 struct queue_entry *entry)
+{
+	bool ret;
+	unsigned long tout;
+
+	if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
+		return false;
+
+	if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags))
+		tout = msecs_to_jiffies(50);
+	else
+		tout = msecs_to_jiffies(2000);
+
+	ret = time_after(jiffies, entry->last_action + tout);
+	if (unlikely(ret))
+		rt2x00_dbg(entry->queue->rt2x00dev,
+			   "TX status timeout for entry %d in queue %d\n",
+			   entry->entry_idx, entry->queue->qid);
+	return ret;
+}
+
+bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	struct queue_entry *entry;
+
+	if (!test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags)) {
+		unsigned long tout = msecs_to_jiffies(1000);
+
+		if (time_before(jiffies, rt2x00dev->last_nostatus_check + tout))
+			return false;
+	}
+
+	rt2x00dev->last_nostatus_check = jiffies;
+
+	tx_queue_for_each(rt2x00dev, queue) {
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+		if (rt2800_entry_txstatus_timeout(rt2x00dev, entry))
+			return true;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(rt2800_txstatus_timeout);
+
+void rt2800_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	struct queue_entry *entry;
+
+	/*
+	 * Process any trailing TX status reports for IO failures,
+	 * we loop until we find the first non-IO error entry. This
+	 * can either be a frame which is free, is being uploaded,
+	 * or has completed the upload but didn't have an entry
+	 * in the TX_STAT_FIFO register yet.
+	 */
+	tx_queue_for_each(rt2x00dev, queue) {
+		while (!rt2x00queue_empty(queue)) {
+			entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+
+			if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+			    !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
+				break;
+
+			if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
+			    rt2800_entry_txstatus_timeout(rt2x00dev, entry))
+				rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
+			else
+				break;
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(rt2800_txdone_nostatus);
+
 static unsigned int rt2800_hw_beacon_base(struct rt2x00_dev *rt2x00dev,
 					  unsigned int index)
 {