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, 45 insertions, 14 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index de94dfdf2ec9..1da2de205cdf 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -2,7 +2,7 @@
  *
  * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * Copyright(c) 2016 Intel Deutschland GmbH
+ * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -880,7 +880,7 @@ static int iwl_pcie_dummy_napi_poll(struct napi_struct *napi, int budget)
 	return 0;
 }
 
-int iwl_pcie_rx_init(struct iwl_trans *trans)
+static int _iwl_pcie_rx_init(struct iwl_trans *trans)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *def_rxq;
@@ -958,20 +958,40 @@ int iwl_pcie_rx_init(struct iwl_trans *trans)
 
 	iwl_pcie_rxq_alloc_rbs(trans, GFP_KERNEL, def_rxq);
 
+	return 0;
+}
+
+int iwl_pcie_rx_init(struct iwl_trans *trans)
+{
+	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+	int ret = _iwl_pcie_rx_init(trans);
+
+	if (ret)
+		return ret;
+
 	if (trans->cfg->mq_rx_supported)
 		iwl_pcie_rx_mq_hw_init(trans);
 	else
-		iwl_pcie_rx_hw_init(trans, def_rxq);
+		iwl_pcie_rx_hw_init(trans, trans_pcie->rxq);
 
-	iwl_pcie_rxq_restock(trans, def_rxq);
+	iwl_pcie_rxq_restock(trans, trans_pcie->rxq);
 
-	spin_lock(&def_rxq->lock);
-	iwl_pcie_rxq_inc_wr_ptr(trans, def_rxq);
-	spin_unlock(&def_rxq->lock);
+	spin_lock(&trans_pcie->rxq->lock);
+	iwl_pcie_rxq_inc_wr_ptr(trans, trans_pcie->rxq);
+	spin_unlock(&trans_pcie->rxq->lock);
 
 	return 0;
 }
 
+int iwl_pcie_gen2_rx_init(struct iwl_trans *trans)
+{
+	/*
+	 * We don't configure the RFH.
+	 * Restock will be done at alive, after firmware configured the RFH.
+	 */
+	return _iwl_pcie_rx_init(trans);
+}
+
 void iwl_pcie_rx_free(struct iwl_trans *trans)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@@ -1074,7 +1094,7 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans,
 				bool emergency)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_txq *txq = &trans_pcie->txq[trans_pcie->cmd_queue];
+	struct iwl_txq *txq = trans_pcie->txq[trans_pcie->cmd_queue];
 	bool page_stolen = false;
 	int max_len = PAGE_SIZE << trans_pcie->rx_page_order;
 	u32 offset = 0;
@@ -1127,7 +1147,7 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans,
 		 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
 		 *   but apparently a few don't get set; catch them here. */
 		reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME);
-		if (reclaim) {
+		if (reclaim && !pkt->hdr.group_id) {
 			int i;
 
 			for (i = 0; i < trans_pcie->n_no_reclaim_cmds; i++) {
@@ -1393,17 +1413,17 @@ static void iwl_pcie_irq_handle_error(struct iwl_trans *trans)
 		return;
 	}
 
-	iwl_pcie_dump_csr(trans);
-	iwl_dump_fh(trans, NULL);
-
 	local_bh_disable();
 	/* The STATUS_FW_ERROR bit is set in this function. This must happen
 	 * before we wake up the command caller, to ensure a proper cleanup. */
 	iwl_trans_fw_error(trans);
 	local_bh_enable();
 
-	for (i = 0; i < trans->cfg->base_params->num_of_queues; i++)
-		del_timer(&trans_pcie->txq[i].stuck_timer);
+	for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) {
+		if (!trans_pcie->txq[i])
+			continue;
+		del_timer(&trans_pcie->txq[i]->stuck_timer);
+	}
 
 	clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
 	wake_up(&trans_pcie->wait_command_queue);
@@ -1597,6 +1617,13 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
 		if (inta & CSR_INT_BIT_ALIVE) {
 			IWL_DEBUG_ISR(trans, "Alive interrupt\n");
 			isr_stats->alive++;
+			if (trans->cfg->gen2) {
+				/*
+				 * We can restock, since firmware configured
+				 * the RFH
+				 */
+				iwl_pcie_rxmq_restock(trans, trans_pcie->rxq);
+			}
 		}
 	}
 
@@ -1933,6 +1960,10 @@ irqreturn_t iwl_pcie_irq_msix_handler(int irq, void *dev_id)
 	if (inta_hw & MSIX_HW_INT_CAUSES_REG_ALIVE) {
 		IWL_DEBUG_ISR(trans, "Alive interrupt\n");
 		isr_stats->alive++;
+		if (trans->cfg->gen2) {
+			/* We can restock, since firmware configured the RFH */
+			iwl_pcie_rxmq_restock(trans, trans_pcie->rxq);
+		}
 	}
 
 	/* uCode wakes up after power-down sleep */