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

Pull networking updates from David Millar:
 "Here are some highlights from the 2065 networking commits that
  happened this development cycle:

   1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)

   2) Add a generic XDP driver, so that anyone can test XDP even if they
      lack a networking device whose driver has explicit XDP support
      (me).

   3) Sparc64 now has an eBPF JIT too (me)

   4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
      Starovoitov)

   5) Make netfitler network namespace teardown less expensive (Florian
      Westphal)

   6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)

   7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)

   8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)

   9) Multiqueue support in stmmac driver (Joao Pinto)

  10) Remove TCP timewait recycling, it never really could possibly work
      well in the real world and timestamp randomization really zaps any
      hint of usability this feature had (Soheil Hassas Yeganeh)

  11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
      Aleksandrov)

  12) Add socket busy poll support to epoll (Sridhar Samudrala)

  13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
      and several others)

  14) IPSEC hw offload infrastructure (Steffen Klassert)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
  tipc: refactor function tipc_sk_recv_stream()
  tipc: refactor function tipc_sk_recvmsg()
  net: thunderx: Optimize page recycling for XDP
  net: thunderx: Support for XDP header adjustment
  net: thunderx: Add support for XDP_TX
  net: thunderx: Add support for XDP_DROP
  net: thunderx: Add basic XDP support
  net: thunderx: Cleanup receive buffer allocation
  net: thunderx: Optimize CQE_TX handling
  net: thunderx: Optimize RBDR descriptor handling
  net: thunderx: Support for page recycling
  ipx: call ipxitf_put() in ioctl error path
  net: sched: add helpers to handle extended actions
  qed*: Fix issues in the ptp filter config implementation.
  qede: Fix concurrency issue in PTP Tx path processing.
  stmmac: Add support for SIMATIC IOT2000 platform
  net: hns: fix ethtool_get_strings overflow in hns driver
  tcp: fix wraparound issue in tcp_lp
  bpf, arm64: fix jit branch offset related to ldimm64
  bpf, arm64: implement jiting of BPF_XADD
  ...

1 files changed, 102 insertions, 86 deletions

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ptp.c b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
index 2e62dec09bd7..24f06e2ef43e 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ptp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ptp.c
@@ -181,6 +181,7 @@ static void qede_ptp_task(struct work_struct *work)
 	skb_tstamp_tx(ptp->tx_skb, &shhwtstamps);
 	dev_kfree_skb_any(ptp->tx_skb);
 	ptp->tx_skb = NULL;
+	clear_bit_unlock(QEDE_FLAGS_PTP_TX_IN_PRORGESS, &edev->flags);
 
 	DP_VERBOSE(edev, QED_MSG_DEBUG,
 		   "Tx timestamp, timestamp cycles = %llu, ns = %llu\n",
@@ -206,23 +207,10 @@ static u64 qede_ptp_read_cc(const struct cyclecounter *cc)
 	return phc_cycles;
 }
 
-static void qede_ptp_init_cc(struct qede_dev *edev)
-{
-	struct qede_ptp *ptp;
-
-	ptp = edev->ptp;
-	if (!ptp)
-		return;
-
-	memset(&ptp->cc, 0, sizeof(ptp->cc));
-	ptp->cc.read = qede_ptp_read_cc;
-	ptp->cc.mask = CYCLECOUNTER_MASK(64);
-	ptp->cc.shift = 0;
-	ptp->cc.mult = 1;
-}
-
 static int qede_ptp_cfg_filters(struct qede_dev *edev)
 {
+	enum qed_ptp_hwtstamp_tx_type tx_type = QED_PTP_HWTSTAMP_TX_ON;
+	enum qed_ptp_filter_type rx_filter = QED_PTP_FILTER_NONE;
 	struct qede_ptp *ptp = edev->ptp;
 
 	if (!ptp)
@@ -236,7 +224,12 @@ static int qede_ptp_cfg_filters(struct qede_dev *edev)
 	switch (ptp->tx_type) {
 	case HWTSTAMP_TX_ON:
 		edev->flags |= QEDE_TX_TIMESTAMPING_EN;
-		ptp->ops->hwtstamp_tx_on(edev->cdev);
+		tx_type = QED_PTP_HWTSTAMP_TX_ON;
+		break;
+
+	case HWTSTAMP_TX_OFF:
+		edev->flags &= ~QEDE_TX_TIMESTAMPING_EN;
+		tx_type = QED_PTP_HWTSTAMP_TX_OFF;
 		break;
 
 	case HWTSTAMP_TX_ONESTEP_SYNC:
@@ -247,42 +240,57 @@ static int qede_ptp_cfg_filters(struct qede_dev *edev)
 	spin_lock_bh(&ptp->lock);
 	switch (ptp->rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
+		rx_filter = QED_PTP_FILTER_NONE;
 		break;
 	case HWTSTAMP_FILTER_ALL:
 	case HWTSTAMP_FILTER_SOME:
 		ptp->rx_filter = HWTSTAMP_FILTER_NONE;
+		rx_filter = QED_PTP_FILTER_ALL;
 		break;
 	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
+		rx_filter = QED_PTP_FILTER_V1_L4_EVENT;
+		break;
 	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
 	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
 		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
 		/* Initialize PTP detection for UDP/IPv4 events */
-		ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_IPV4);
+		rx_filter = QED_PTP_FILTER_V1_L4_GEN;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
+		rx_filter = QED_PTP_FILTER_V2_L4_EVENT;
+		break;
 	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
 		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
 		/* Initialize PTP detection for UDP/IPv4 or UDP/IPv6 events */
-		ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_IPV4_IPV6);
+		rx_filter = QED_PTP_FILTER_V2_L4_GEN;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
+		rx_filter = QED_PTP_FILTER_V2_L2_EVENT;
+		break;
 	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
 		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
 		/* Initialize PTP detection L2 events */
-		ptp->ops->cfg_rx_filters(edev->cdev, QED_PTP_FILTER_L2);
+		rx_filter = QED_PTP_FILTER_V2_L2_GEN;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
+		rx_filter = QED_PTP_FILTER_V2_EVENT;
+		break;
 	case HWTSTAMP_FILTER_PTP_V2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
 		ptp->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
 		/* Initialize PTP detection L2, UDP/IPv4 or UDP/IPv6 events */
-		ptp->ops->cfg_rx_filters(edev->cdev,
-					 QED_PTP_FILTER_L2_IPV4_IPV6);
+		rx_filter = QED_PTP_FILTER_V2_GEN;
 		break;
 	}
 
+	ptp->ops->cfg_filters(edev->cdev, rx_filter, tx_type);
+
 	spin_unlock_bh(&ptp->lock);
 
 	return 0;
@@ -324,61 +332,6 @@ int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *ifr)
 			    sizeof(config)) ? -EFAULT : 0;
 }
 
-/* Called during load, to initialize PTP-related stuff */
-static void qede_ptp_init(struct qede_dev *edev, bool init_tc)
-{
-	struct qede_ptp *ptp;
-	int rc;
-
-	ptp = edev->ptp;
-	if (!ptp)
-		return;
-
-	spin_lock_init(&ptp->lock);
-
-	/* Configure PTP in HW */
-	rc = ptp->ops->enable(edev->cdev);
-	if (rc) {
-		DP_ERR(edev, "Stopping PTP initialization\n");
-		return;
-	}
-
-	/* Init work queue for Tx timestamping */
-	INIT_WORK(&ptp->work, qede_ptp_task);
-
-	/* Init cyclecounter and timecounter. This is done only in the first
-	 * load. If done in every load, PTP application will fail when doing
-	 * unload / load (e.g. MTU change) while it is running.
-	 */
-	if (init_tc) {
-		qede_ptp_init_cc(edev);
-		timecounter_init(&ptp->tc, &ptp->cc,
-				 ktime_to_ns(ktime_get_real()));
-	}
-
-	DP_VERBOSE(edev, QED_MSG_DEBUG, "PTP initialization is successful\n");
-}
-
-void qede_ptp_start(struct qede_dev *edev, bool init_tc)
-{
-	qede_ptp_init(edev, init_tc);
-	qede_ptp_cfg_filters(edev);
-}
-
-void qede_ptp_remove(struct qede_dev *edev)
-{
-	struct qede_ptp *ptp;
-
-	ptp = edev->ptp;
-	if (ptp && ptp->clock) {
-		ptp_clock_unregister(ptp->clock);
-		ptp->clock = NULL;
-	}
-
-	kfree(ptp);
-	edev->ptp = NULL;
-}
-
 int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *info)
 {
 	struct qede_ptp *ptp = edev->ptp;
@@ -417,8 +370,7 @@ int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *info)
 	return 0;
 }
 
-/* Called during unload, to stop PTP-related stuff */
-void qede_ptp_stop(struct qede_dev *edev)
+void qede_ptp_disable(struct qede_dev *edev)
 {
 	struct qede_ptp *ptp;
 
@@ -426,6 +378,11 @@ void qede_ptp_stop(struct qede_dev *edev)
 	if (!ptp)
 		return;
 
+	if (ptp->clock) {
+		ptp_clock_unregister(ptp->clock);
+		ptp->clock = NULL;
+	}
+
 	/* Cancel PTP work queue. Should be done after the Tx queues are
 	 * drained to prevent additional scheduling.
 	 */
@@ -439,11 +396,54 @@ void qede_ptp_stop(struct qede_dev *edev)
 	spin_lock_bh(&ptp->lock);
 	ptp->ops->disable(edev->cdev);
 	spin_unlock_bh(&ptp->lock);
+
+	kfree(ptp);
+	edev->ptp = NULL;
+}
+
+static int qede_ptp_init(struct qede_dev *edev, bool init_tc)
+{
+	struct qede_ptp *ptp;
+	int rc;
+
+	ptp = edev->ptp;
+	if (!ptp)
+		return -EINVAL;
+
+	spin_lock_init(&ptp->lock);
+
+	/* Configure PTP in HW */
+	rc = ptp->ops->enable(edev->cdev);
+	if (rc) {
+		DP_INFO(edev, "PTP HW enable failed\n");
+		return rc;
+	}
+
+	/* Init work queue for Tx timestamping */
+	INIT_WORK(&ptp->work, qede_ptp_task);
+
+	/* Init cyclecounter and timecounter. This is done only in the first
+	 * load. If done in every load, PTP application will fail when doing
+	 * unload / load (e.g. MTU change) while it is running.
+	 */
+	if (init_tc) {
+		memset(&ptp->cc, 0, sizeof(ptp->cc));
+		ptp->cc.read = qede_ptp_read_cc;
+		ptp->cc.mask = CYCLECOUNTER_MASK(64);
+		ptp->cc.shift = 0;
+		ptp->cc.mult = 1;
+
+		timecounter_init(&ptp->tc, &ptp->cc,
+				 ktime_to_ns(ktime_get_real()));
+	}
+
+	return rc;
 }
 
-int qede_ptp_register_phc(struct qede_dev *edev)
+int qede_ptp_enable(struct qede_dev *edev, bool init_tc)
 {
 	struct qede_ptp *ptp;
+	int rc;
 
 	ptp = kzalloc(sizeof(*ptp), GFP_KERNEL);
 	if (!ptp) {
@@ -454,14 +454,19 @@ int qede_ptp_register_phc(struct qede_dev *edev)
 	ptp->edev = edev;
 	ptp->ops = edev->ops->ptp;
 	if (!ptp->ops) {
-		kfree(ptp);
-		edev->ptp = NULL;
-		DP_ERR(edev, "PTP clock registeration failed\n");
-		return -EIO;
+		DP_INFO(edev, "PTP enable failed\n");
+		rc = -EIO;
+		goto err1;
 	}
 
 	edev->ptp = ptp;
 
+	rc = qede_ptp_init(edev, init_tc);
+	if (rc)
+		goto err1;
+
+	qede_ptp_cfg_filters(edev);
+
 	/* Fill the ptp_clock_info struct and register PTP clock */
 	ptp->clock_info.owner = THIS_MODULE;
 	snprintf(ptp->clock_info.name, 16, "%s", edev->ndev->name);
@@ -478,13 +483,21 @@ int qede_ptp_register_phc(struct qede_dev *edev)
 
 	ptp->clock = ptp_clock_register(&ptp->clock_info, &edev->pdev->dev);
 	if (IS_ERR(ptp->clock)) {
-		ptp->clock = NULL;
-		kfree(ptp);
-		edev->ptp = NULL;
+		rc = -EINVAL;
 		DP_ERR(edev, "PTP clock registeration failed\n");
+		goto err2;
 	}
 
 	return 0;
+
+err2:
+	qede_ptp_disable(edev);
+	ptp->clock = NULL;
+err1:
+	kfree(ptp);
+	edev->ptp = NULL;
+
+	return rc;
 }
 
 void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb)
@@ -495,6 +508,9 @@ void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb)
 	if (!ptp)
 		return;
 
+	if (test_and_set_bit_lock(QEDE_FLAGS_PTP_TX_IN_PRORGESS, &edev->flags))
+		return;
+
 	if (unlikely(!(edev->flags & QEDE_TX_TIMESTAMPING_EN))) {
 		DP_NOTICE(edev,
 			  "Tx timestamping was not enabled, this packet will not be timestamped\n");