Merge tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:

 - Add redirect_neigh() BPF packet redirect helper, allowing to limit
   stack traversal in common container configs and improving TCP
   back-pressure.

   Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain.

 - Expand netlink policy support and improve policy export to user
   space. (Ge)netlink core performs request validation according to
   declared policies. Expand the expressiveness of those policies
   (min/max length and bitmasks). Allow dumping policies for particular
   commands. This is used for feature discovery by user space (instead
   of kernel version parsing or trial and error).

 - Support IGMPv3/MLDv2 multicast listener discovery protocols in
   bridge.

 - Allow more than 255 IPv4 multicast interfaces.

 - Add support for Type of Service (ToS) reflection in SYN/SYN-ACK
   packets of TCPv6.

 - In Multi-patch TCP (MPTCP) support concurrent transmission of data on
   multiple subflows in a load balancing scenario. Enhance advertising
   addresses via the RM_ADDR/ADD_ADDR options.

 - Support SMC-Dv2 version of SMC, which enables multi-subnet
   deployments.

 - Allow more calls to same peer in RxRPC.

 - Support two new Controller Area Network (CAN) protocols - CAN-FD and
   ISO 15765-2:2016.

 - Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit
   kernel problem.

 - Add TC actions for implementing MPLS L2 VPNs.

 - Improve nexthop code - e.g. handle various corner cases when nexthop
   objects are removed from groups better, skip unnecessary
   notifications and make it easier to offload nexthops into HW by
   converting to a blocking notifier.

 - Support adding and consuming TCP header options by BPF programs,
   opening the doors for easy experimental and deployment-specific TCP
   option use.

 - Reorganize TCP congestion control (CC) initialization to simplify
   life of TCP CC implemented in BPF.

 - Add support for shipping BPF programs with the kernel and loading
   them early on boot via the User Mode Driver mechanism, hence reusing
   all the user space infra we have.

 - Support sleepable BPF programs, initially targeting LSM and tracing.

 - Add bpf_d_path() helper for returning full path for given 'struct
   path'.

 - Make bpf_tail_call compatible with bpf-to-bpf calls.

 - Allow BPF programs to call map_update_elem on sockmaps.

 - Add BPF Type Format (BTF) support for type and enum discovery, as
   well as support for using BTF within the kernel itself (current use
   is for pretty printing structures).

 - Support listing and getting information about bpf_links via the bpf
   syscall.

 - Enhance kernel interfaces around NIC firmware update. Allow
   specifying overwrite mask to control if settings etc. are reset
   during update; report expected max time operation may take to users;
   support firmware activation without machine reboot incl. limits of
   how much impact reset may have (e.g. dropping link or not).

 - Extend ethtool configuration interface to report IEEE-standard
   counters, to limit the need for per-vendor logic in user space.

 - Adopt or extend devlink use for debug, monitoring, fw update in many
   drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx,
   dpaa2-eth).

 - In mlxsw expose critical and emergency SFP module temperature alarms.
   Refactor port buffer handling to make the defaults more suitable and
   support setting these values explicitly via the DCBNL interface.

 - Add XDP support for Intel's igb driver.

 - Support offloading TC flower classification and filtering rules to
   mscc_ocelot switches.

 - Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as
   fixed interval period pulse generator and one-step timestamping in
   dpaa-eth.

 - Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3)
   offload.

 - Add Lynx PHY/PCS MDIO module, and convert various drivers which have
   this HW to use it. Convert mvpp2 to split PCS.

 - Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as
   7-port Mediatek MT7531 IP.

 - Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver,
   and wcn3680 support in wcn36xx.

 - Improve performance for packets which don't require much offloads on
   recent Mellanox NICs by 20% by making multiple packets share a
   descriptor entry.

 - Move chelsio inline crypto drivers (for TLS and IPsec) from the
   crypto subtree to drivers/net. Move MDIO drivers out of the phy
   directory.

 - Clean up a lot of W=1 warnings, reportedly the actively developed
   subsections of networking drivers should now build W=1 warning free.

 - Make sure drivers don't use in_interrupt() to dynamically adapt their
   code. Convert tasklets to use new tasklet_setup API (sadly this
   conversion is not yet complete).

* tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2583 commits)
  Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH"
  net, sockmap: Don't call bpf_prog_put() on NULL pointer
  bpf, selftest: Fix flaky tcp_hdr_options test when adding addr to lo
  bpf, sockmap: Add locking annotations to iterator
  netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements
  net: fix pos incrementment in ipv6_route_seq_next
  net/smc: fix invalid return code in smcd_new_buf_create()
  net/smc: fix valid DMBE buffer sizes
  net/smc: fix use-after-free of delayed events
  bpfilter: Fix build error with CONFIG_BPFILTER_UMH
  cxgb4/ch_ipsec: Replace the module name to ch_ipsec from chcr
  net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info
  bpf: Fix register equivalence tracking.
  rxrpc: Fix loss of final ack on shutdown
  rxrpc: Fix bundle counting for exclusive connections
  netfilter: restore NF_INET_NUMHOOKS
  ibmveth: Identify ingress large send packets.
  ibmveth: Switch order of ibmveth_helper calls.
  cxgb4: handle 4-tuple PEDIT to NAT mode translation
  selftests: Add VRF route leaking tests
  ...

1 files changed, 131 insertions, 67 deletions

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index 3c57c331729f..ed9808fc743b 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -298,8 +298,8 @@ static void ionic_get_pauseparam(struct net_device *netdev,
 
 	pause_type = lif->ionic->idev.port_info->config.pause_type;
 	if (pause_type) {
-		pause->rx_pause = pause_type & IONIC_PAUSE_F_RX ? 1 : 0;
-		pause->tx_pause = pause_type & IONIC_PAUSE_F_TX ? 1 : 0;
+		pause->rx_pause = (pause_type & IONIC_PAUSE_F_RX) ? 1 : 0;
+		pause->tx_pause = (pause_type & IONIC_PAUSE_F_TX) ? 1 : 0;
 	}
 }
 
@@ -406,6 +406,13 @@ static int ionic_get_coalesce(struct net_device *netdev,
 	coalesce->tx_coalesce_usecs = lif->tx_coalesce_usecs;
 	coalesce->rx_coalesce_usecs = lif->rx_coalesce_usecs;
 
+	if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
+		coalesce->use_adaptive_tx_coalesce = test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state);
+	else
+		coalesce->use_adaptive_tx_coalesce = 0;
+
+	coalesce->use_adaptive_rx_coalesce = test_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state);
+
 	return 0;
 }
 
@@ -414,10 +421,9 @@ static int ionic_set_coalesce(struct net_device *netdev,
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_identity *ident;
-	struct ionic_qcq *qcq;
+	u32 rx_coal, rx_dim;
+	u32 tx_coal, tx_dim;
 	unsigned int i;
-	u32 rx_coal;
-	u32 tx_coal;
 
 	ident = &lif->ionic->ident;
 	if (ident->dev.intr_coal_div == 0) {
@@ -426,10 +432,11 @@ static int ionic_set_coalesce(struct net_device *netdev,
 		return -EIO;
 	}
 
-	/* Tx normally shares Rx interrupt, so only change Rx */
+	/* Tx normally shares Rx interrupt, so only change Rx if not split */
 	if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state) &&
-	    coalesce->tx_coalesce_usecs != lif->rx_coalesce_usecs) {
-		netdev_warn(netdev, "only the rx-usecs can be changed\n");
+	    (coalesce->tx_coalesce_usecs != lif->rx_coalesce_usecs ||
+	     coalesce->use_adaptive_tx_coalesce)) {
+		netdev_warn(netdev, "only rx parameters can be changed\n");
 		return -EINVAL;
 	}
 
@@ -449,32 +456,44 @@ static int ionic_set_coalesce(struct net_device *netdev,
 
 	/* Save the new values */
 	lif->rx_coalesce_usecs = coalesce->rx_coalesce_usecs;
-	if (rx_coal != lif->rx_coalesce_hw) {
-		lif->rx_coalesce_hw = rx_coal;
-
-		if (test_bit(IONIC_LIF_F_UP, lif->state)) {
-			for (i = 0; i < lif->nxqs; i++) {
-				qcq = lif->rxqcqs[i].qcq;
-				ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
-						     qcq->intr.index,
-						     lif->rx_coalesce_hw);
-			}
-		}
-	}
+	lif->rx_coalesce_hw = rx_coal;
 
 	if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
 		lif->tx_coalesce_usecs = coalesce->tx_coalesce_usecs;
 	else
 		lif->tx_coalesce_usecs = coalesce->rx_coalesce_usecs;
-	if (tx_coal != lif->tx_coalesce_hw) {
-		lif->tx_coalesce_hw = tx_coal;
+	lif->tx_coalesce_hw = tx_coal;
 
-		if (test_bit(IONIC_LIF_F_UP, lif->state)) {
-			for (i = 0; i < lif->nxqs; i++) {
-				qcq = lif->txqcqs[i].qcq;
+	if (coalesce->use_adaptive_rx_coalesce) {
+		set_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state);
+		rx_dim = rx_coal;
+	} else {
+		clear_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state);
+		rx_dim = 0;
+	}
+
+	if (coalesce->use_adaptive_tx_coalesce) {
+		set_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state);
+		tx_dim = tx_coal;
+	} else {
+		clear_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state);
+		tx_dim = 0;
+	}
+
+	if (test_bit(IONIC_LIF_F_UP, lif->state)) {
+		for (i = 0; i < lif->nxqs; i++) {
+			if (lif->rxqcqs[i]->flags & IONIC_QCQ_F_INTR) {
 				ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
-						     qcq->intr.index,
+						     lif->rxqcqs[i]->intr.index,
+						     lif->rx_coalesce_hw);
+				lif->rxqcqs[i]->intr.dim_coal_hw = rx_dim;
+			}
+
+			if (lif->txqcqs[i]->flags & IONIC_QCQ_F_INTR) {
+				ionic_intr_coal_init(lif->ionic->idev.intr_ctrl,
+						     lif->txqcqs[i]->intr.index,
 						     lif->tx_coalesce_hw);
+				lif->txqcqs[i]->intr.dim_coal_hw = tx_dim;
 			}
 		}
 	}
@@ -493,18 +512,14 @@ static void ionic_get_ringparam(struct net_device *netdev,
 	ring->rx_pending = lif->nrxq_descs;
 }
 
-static void ionic_set_ringsize(struct ionic_lif *lif, void *arg)
-{
-	struct ethtool_ringparam *ring = arg;
-
-	lif->ntxq_descs = ring->tx_pending;
-	lif->nrxq_descs = ring->rx_pending;
-}
-
 static int ionic_set_ringparam(struct net_device *netdev,
 			       struct ethtool_ringparam *ring)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
+	struct ionic_queue_params qparam;
+	int err;
+
+	ionic_init_queue_params(lif, &qparam);
 
 	if (ring->rx_mini_pending || ring->rx_jumbo_pending) {
 		netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n");
@@ -522,7 +537,28 @@ static int ionic_set_ringparam(struct net_device *netdev,
 	    ring->rx_pending == lif->nrxq_descs)
 		return 0;
 
-	return ionic_reset_queues(lif, ionic_set_ringsize, ring);
+	if (ring->tx_pending != lif->ntxq_descs)
+		netdev_info(netdev, "Changing Tx ring size from %d to %d\n",
+			    lif->ntxq_descs, ring->tx_pending);
+
+	if (ring->rx_pending != lif->nrxq_descs)
+		netdev_info(netdev, "Changing Rx ring size from %d to %d\n",
+			    lif->nrxq_descs, ring->rx_pending);
+
+	/* if we're not running, just set the values and return */
+	if (!netif_running(lif->netdev)) {
+		lif->ntxq_descs = ring->tx_pending;
+		lif->nrxq_descs = ring->rx_pending;
+		return 0;
+	}
+
+	qparam.ntxq_descs = ring->tx_pending;
+	qparam.nrxq_descs = ring->rx_pending;
+	err = ionic_reconfigure_queues(lif, &qparam);
+	if (err)
+		netdev_info(netdev, "Ring reconfiguration failed, changes canceled: %d\n", err);
+
+	return err;
 }
 
 static void ionic_get_channels(struct net_device *netdev,
@@ -544,32 +580,15 @@ static void ionic_get_channels(struct net_device *netdev,
 	}
 }
 
-static void ionic_set_queuecount(struct ionic_lif *lif, void *arg)
-{
-	struct ethtool_channels *ch = arg;
-
-	if (ch->combined_count) {
-		lif->nxqs = ch->combined_count;
-		if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) {
-			clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
-			lif->tx_coalesce_usecs = lif->rx_coalesce_usecs;
-			lif->tx_coalesce_hw = lif->rx_coalesce_hw;
-			netdev_info(lif->netdev, "Sharing queue interrupts\n");
-		}
-	} else {
-		lif->nxqs = ch->rx_count;
-		if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) {
-			set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
-			netdev_info(lif->netdev, "Splitting queue interrupts\n");
-		}
-	}
-}
-
 static int ionic_set_channels(struct net_device *netdev,
 			      struct ethtool_channels *ch)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
-	int new_cnt;
+	struct ionic_queue_params qparam;
+	int max_cnt;
+	int err;
+
+	ionic_init_queue_params(lif, &qparam);
 
 	if (ch->rx_count != ch->tx_count) {
 		netdev_info(netdev, "The rx and tx count must be equal\n");
@@ -577,20 +596,63 @@ static int ionic_set_channels(struct net_device *netdev,
 	}
 
 	if (ch->combined_count && ch->rx_count) {
-		netdev_info(netdev, "Use either combined_count or rx/tx_count, not both\n");
+		netdev_info(netdev, "Use either combined or rx and tx, not both\n");
 		return -EINVAL;
 	}
 
-	if (ch->combined_count)
-		new_cnt = ch->combined_count;
-	else
-		new_cnt = ch->rx_count;
+	max_cnt = lif->ionic->ntxqs_per_lif;
+	if (ch->combined_count) {
+		if (ch->combined_count > max_cnt)
+			return -EINVAL;
+
+		if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
+			netdev_info(lif->netdev, "Sharing queue interrupts\n");
+		else if (ch->combined_count == lif->nxqs)
+			return 0;
 
-	if (lif->nxqs != new_cnt)
-		netdev_info(netdev, "Changing queue count from %d to %d\n",
-			    lif->nxqs, new_cnt);
+		if (lif->nxqs != ch->combined_count)
+			netdev_info(netdev, "Changing queue count from %d to %d\n",
+				    lif->nxqs, ch->combined_count);
 
-	return ionic_reset_queues(lif, ionic_set_queuecount, ch);
+		qparam.nxqs = ch->combined_count;
+		qparam.intr_split = 0;
+	} else {
+		max_cnt /= 2;
+		if (ch->rx_count > max_cnt)
+			return -EINVAL;
+
+		if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
+			netdev_info(lif->netdev, "Splitting queue interrupts\n");
+		else if (ch->rx_count == lif->nxqs)
+			return 0;
+
+		if (lif->nxqs != ch->rx_count)
+			netdev_info(netdev, "Changing queue count from %d to %d\n",
+				    lif->nxqs, ch->rx_count);
+
+		qparam.nxqs = ch->rx_count;
+		qparam.intr_split = 1;
+	}
+
+	/* if we're not running, just set the values and return */
+	if (!netif_running(lif->netdev)) {
+		lif->nxqs = qparam.nxqs;
+
+		if (qparam.intr_split) {
+			set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
+		} else {
+			clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
+			lif->tx_coalesce_usecs = lif->rx_coalesce_usecs;
+			lif->tx_coalesce_hw = lif->rx_coalesce_hw;
+		}
+		return 0;
+	}
+
+	err = ionic_reconfigure_queues(lif, &qparam);
+	if (err)
+		netdev_info(netdev, "Queue reconfiguration failed, changes canceled: %d\n", err);
+
+	return err;
 }
 
 static u32 ionic_get_priv_flags(struct net_device *netdev)
@@ -807,7 +869,9 @@ static int ionic_nway_reset(struct net_device *netdev)
 }
 
 static const struct ethtool_ops ionic_ethtool_ops = {
-	.supported_coalesce_params = ETHTOOL_COALESCE_USECS,
+	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
+				     ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
+				     ETHTOOL_COALESCE_USE_ADAPTIVE_TX,
 	.get_drvinfo		= ionic_get_drvinfo,
 	.get_regs_len		= ionic_get_regs_len,
 	.get_regs		= ionic_get_regs,