Merge tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - Improve drop account scalability on NUMA hosts for RAW and UDP
     sockets and the backlog, almost doubling the Pps capacity under DoS

   - Optimize the UDP RX performance under stress, reducing contention,
     revisiting the binary layout of the involved data structs and
     implementing NUMA-aware locking. This improves UDP RX performance
     by an additional 50%, even more under extreme conditions

   - Add support for PSP encryption of TCP connections; this mechanism
     has some similarities with IPsec and TLS, but offers superior HW
     offloads capabilities

   - Ongoing work to support Accurate ECN for TCP. AccECN allows more
     than one congestion notification signal per RTT and is a building
     block for Low Latency, Low Loss, and Scalable Throughput (L4S)

   - Reorganize the TCP socket binary layout for data locality, reducing
     the number of touched cachelines in the fastpath

   - Refactor skb deferral free to better scale on large multi-NUMA
     hosts, this improves TCP and UDP RX performances significantly on
     such HW

   - Increase the default socket memory buffer limits from 256K to 4M to
     better fit modern link speeds

   - Improve handling of setups with a large number of nexthop, making
     dump operating scaling linearly and avoiding unneeded
     synchronize_rcu() on delete

   - Improve bridge handling of VLAN FDB, storing a single entry per
     bridge instead of one entry per port; this makes the dump order of
     magnitude faster on large switches

   - Restore IP ID correctly for encapsulated packets at GSO
     segmentation time, allowing GRO to merge packets in more scenarios

   - Improve netfilter matching performance on large sets

   - Improve MPTCP receive path performance by leveraging recently
     introduced core infrastructure (skb deferral free) and adopting
     recent TCP autotuning changes

   - Allow bridges to redirect to a backup port when the bridge port is
     administratively down

   - Introduce MPTCP 'laminar' endpoint that con be used only once per
     connection and simplify common MPTCP setups

   - Add RCU safety to dst->dev, closing a lot of possible races

   - A significant crypto library API for SCTP, MPTCP and IPv6 SR,
     reducing code duplication

   - Supports pulling data from an skb frag into the linear area of an
     XDP buffer

  Things we sprinkled into general kernel code:

   - Generate netlink documentation from YAML using an integrated YAML
     parser

  Driver API:

   - Support using IPv6 Flow Label in Rx hash computation and RSS queue
     selection

   - Introduce API for fetching the DMA device for a given queue,
     allowing TCP zerocopy RX on more H/W setups

   - Make XDP helpers compatible with unreadable memory, allowing more
     easily building DevMem-enabled drivers with a unified XDP/skbs
     datapath

   - Add a new dedicated ethtool callback enabling drivers to provide
     the number of RX rings directly, improving efficiency and clarity
     in RX ring queries and RSS configuration

   - Introduce a burst period for the health reporter, allowing better
     handling of multiple errors due to the same root cause

   - Support for DPLL phase offset exponential moving average,
     controlling the average smoothing factor

  Device drivers:

   - Add a new Huawei driver for 3rd gen NIC (hinic3)

   - Add a new SpacemiT driver for K1 ethernet MAC

   - Add a generic abstraction for shared memory communication
     devices (dibps)

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - Use multiple per-queue doorbell, to avoid MMIO contention
           issues
         - support adjacent functions, allowing them to delegate their
           SR-IOV VFs to sibling PFs
         - support RSS for IPSec offload
         - support exposing raw cycle counters in PTP and mlx5
         - support for disabling host PFs.
      - Intel (100G, ice, idpf):
         - ice: support for SRIOV VFs over an Active-Active link
           aggregate
         - ice: support for firmware logging via debugfs
         - ice: support for Earliest TxTime First (ETF) hardware offload
         - idpf: support basic XDP functionalities and XSk
      - Broadcom (bnxt):
         - support Hyper-V VF ID
         - dynamic SRIOV resource allocations for RoCE
      - Meta (fbnic):
         - support queue API, zero-copy Rx and Tx
         - support basic XDP functionalities
         - devlink health support for FW crashes and OTP mem corruptions
         - expand hardware stats coverage to FEC, PHY, and Pause
      - Wangxun:
         - support ethtool coalesce options
         - support for multiple RSS contexts

   - Ethernet virtual:
      - Macsec:
         - replace custom netlink attribute checks with policy-level
           checks
      - Bonding:
         - support aggregator selection based on port priority
      - Microsoft vNIC:
         - use page pool fragments for RX buffers instead of full pages
           to improve memory efficiency

   - Ethernet NICs consumer, and embedded:
      - Qualcomm: support Ethernet function for IPQ9574 SoC
      - Airoha: implement wlan offloading via NPU
      - Freescale
         - enetc: add NETC timer PTP driver and add PTP support
         - fec: enable the Jumbo frame support for i.MX8QM
      - Renesas (R-Car S4):
         - support HW offloading for layer 2 switching
         - support for RZ/{T2H, N2H} SoCs
      - Cadence (macb): support TAPRIO traffic scheduling
      - TI:
         - support for Gigabit ICSS ethernet SoC (icssm-prueth)
      - Synopsys (stmmac): a lot of cleanups

   - Ethernet PHYs:
      - Support 10g-qxgmi phy-mode for AQR412C, Felix DSA and Lynx PCS
        driver
      - Support bcm63268 GPHY power control
      - Support for Micrel lan8842 PHY and PTP
      - Support for Aquantia AQR412 and AQR115

   - CAN:
      - a large CAN-XL preparation work
      - reorganize raw_sock and uniqframe struct to minimize memory
        usage
      - rcar_canfd: update the CAN-FD handling

   - WiFi:
      - extended Neighbor Awareness Networking (NAN) support
      - S1G channel representation cleanup
      - improve S1G support

   - WiFi drivers:
      - Intel (iwlwifi):
         - major refactor and cleanup
      - Broadcom (brcm80211):
         - support for AP isolation
      - RealTek (rtw88/89) rtw88/89:
         - preparation work for RTL8922DE support
      - MediaTek (mt76):
         - HW restart improvements
         - MLO support
      - Qualcomm/Atheros (ath10k):
         - GTK rekey fixes

   - Bluetooth drivers:
      - btusb: support for several new IDs for MT7925
      - btintel: support for BlazarIW core
      - btintel_pcie: support for _suspend() / _resume()
      - btintel_pcie: support for Scorpious, Panther Lake-H484 IDs"

* tag 'net-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1536 commits)
  net: stmmac: Add support for Allwinner A523 GMAC200
  dt-bindings: net: sun8i-emac: Add A523 GMAC200 compatible
  Revert "Documentation: net: add flow control guide and document ethtool API"
  octeontx2-pf: fix bitmap leak
  octeontx2-vf: fix bitmap leak
  net/mlx5e: Use extack in set rxfh callback
  net/mlx5e: Introduce mlx5e_rss_params for RSS configuration
  net/mlx5e: Introduce mlx5e_rss_init_params
  net/mlx5e: Remove unused mdev param from RSS indir init
  net/mlx5: Improve QoS error messages with actual depth values
  net/mlx5e: Prevent entering switchdev mode with inconsistent netns
  net/mlx5: HWS, Generalize complex matchers
  net/mlx5: Improve write-combining test reliability for ARM64 Grace CPUs
  selftests/net: add tcp_port_share to .gitignore
  Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"
  net: add NUMA awareness to skb_attempt_defer_free()
  net: use llist for sd->defer_list
  net: make softnet_data.defer_count an atomic
  selftests: drv-net: psp: add tests for destroying devices
  selftests: drv-net: psp: add test for auto-adjusting TCP MSS
  ...

1 files changed, 177 insertions, 11 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 41e7e29879a3..73f08d02f9c7 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -144,6 +144,56 @@ static struct netdev_queue *txring_txq(const struct ice_tx_ring *ring)
 }
 
 /**
+ * ice_clean_tstamp_ring - clean time stamp ring
+ * @tx_ring: Tx ring to clean the Time Stamp ring for
+ */
+static void ice_clean_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	struct ice_tstamp_ring *tstamp_ring = tx_ring->tstamp_ring;
+	u32 size;
+
+	if (!tstamp_ring->desc)
+		return;
+
+	size = ALIGN(tstamp_ring->count * sizeof(struct ice_ts_desc),
+		     PAGE_SIZE);
+	memset(tstamp_ring->desc, 0, size);
+	tstamp_ring->next_to_use = 0;
+}
+
+/**
+ * ice_free_tstamp_ring - free time stamp resources per queue
+ * @tx_ring: Tx ring to free the Time Stamp ring for
+ */
+void ice_free_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	struct ice_tstamp_ring *tstamp_ring = tx_ring->tstamp_ring;
+	u32 size;
+
+	if (!tstamp_ring->desc)
+		return;
+
+	ice_clean_tstamp_ring(tx_ring);
+	size = ALIGN(tstamp_ring->count * sizeof(struct ice_ts_desc),
+		     PAGE_SIZE);
+	dmam_free_coherent(tx_ring->dev, size, tstamp_ring->desc,
+			   tstamp_ring->dma);
+	tstamp_ring->desc = NULL;
+}
+
+/**
+ * ice_free_tx_tstamp_ring - free time stamp resources per Tx ring
+ * @tx_ring: Tx ring to free the Time Stamp ring for
+ */
+void ice_free_tx_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	ice_free_tstamp_ring(tx_ring);
+	kfree_rcu(tx_ring->tstamp_ring, rcu);
+	tx_ring->tstamp_ring = NULL;
+	tx_ring->flags &= ~ICE_TX_FLAGS_TXTIME;
+}
+
+/**
  * ice_clean_tx_ring - Free any empty Tx buffers
  * @tx_ring: ring to be cleaned
  */
@@ -181,6 +231,9 @@ tx_skip_free:
 
 	/* cleanup Tx queue statistics */
 	netdev_tx_reset_queue(txring_txq(tx_ring));
+
+	if (ice_is_txtime_cfg(tx_ring))
+		ice_free_tx_tstamp_ring(tx_ring);
 }
 
 /**
@@ -332,6 +385,84 @@ static bool ice_clean_tx_irq(struct ice_tx_ring *tx_ring, int napi_budget)
 }
 
 /**
+ * ice_alloc_tstamp_ring - allocate the Time Stamp ring
+ * @tx_ring: Tx ring to allocate the Time Stamp ring for
+ *
+ * Return: 0 on success, negative on error
+ */
+static int ice_alloc_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	struct ice_tstamp_ring *tstamp_ring;
+
+	/* allocate with kzalloc(), free with kfree_rcu() */
+	tstamp_ring = kzalloc(sizeof(*tstamp_ring), GFP_KERNEL);
+	if (!tstamp_ring)
+		return -ENOMEM;
+
+	tstamp_ring->tx_ring = tx_ring;
+	tx_ring->tstamp_ring = tstamp_ring;
+	tstamp_ring->desc = NULL;
+	tstamp_ring->count = ice_calc_ts_ring_count(tx_ring);
+	tx_ring->flags |= ICE_TX_FLAGS_TXTIME;
+	return 0;
+}
+
+/**
+ * ice_setup_tstamp_ring - allocate the Time Stamp ring
+ * @tx_ring: Tx ring to set up the Time Stamp ring for
+ *
+ * Return: 0 on success, negative on error
+ */
+static int ice_setup_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	struct ice_tstamp_ring *tstamp_ring = tx_ring->tstamp_ring;
+	struct device *dev = tx_ring->dev;
+	u32 size;
+
+	/* round up to nearest page */
+	size = ALIGN(tstamp_ring->count * sizeof(struct ice_ts_desc),
+		     PAGE_SIZE);
+	tstamp_ring->desc = dmam_alloc_coherent(dev, size, &tstamp_ring->dma,
+						GFP_KERNEL);
+	if (!tstamp_ring->desc) {
+		dev_err(dev, "Unable to allocate memory for Time stamp Ring, size=%d\n",
+			size);
+		return -ENOMEM;
+	}
+
+	tstamp_ring->next_to_use = 0;
+	return 0;
+}
+
+/**
+ * ice_alloc_setup_tstamp_ring - Allocate and setup the Time Stamp ring
+ * @tx_ring: Tx ring to allocate and setup the Time Stamp ring for
+ *
+ * Return: 0 on success, negative on error
+ */
+int ice_alloc_setup_tstamp_ring(struct ice_tx_ring *tx_ring)
+{
+	struct device *dev = tx_ring->dev;
+	int err;
+
+	err = ice_alloc_tstamp_ring(tx_ring);
+	if (err) {
+		dev_err(dev, "Unable to allocate Time stamp ring for Tx ring %d\n",
+			tx_ring->q_index);
+		return err;
+	}
+
+	err = ice_setup_tstamp_ring(tx_ring);
+	if (err) {
+		dev_err(dev, "Unable to setup Time stamp ring for Tx ring %d\n",
+			tx_ring->q_index);
+		ice_free_tx_tstamp_ring(tx_ring);
+		return err;
+	}
+	return 0;
+}
+
+/**
  * ice_setup_tx_ring - Allocate the Tx descriptors
  * @tx_ring: the Tx ring to set up
  *
@@ -1031,10 +1162,9 @@ ice_build_skb(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp)
 		skb_metadata_set(skb, metasize);
 
 	if (unlikely(xdp_buff_has_frags(xdp)))
-		xdp_update_skb_shared_info(skb, nr_frags,
-					   sinfo->xdp_frags_size,
-					   nr_frags * xdp->frame_sz,
-					   xdp_buff_is_frag_pfmemalloc(xdp));
+		xdp_update_skb_frags_info(skb, nr_frags, sinfo->xdp_frags_size,
+					  nr_frags * xdp->frame_sz,
+					  xdp_buff_get_skb_flags(xdp));
 
 	return skb;
 }
@@ -1111,10 +1241,10 @@ ice_construct_skb(struct ice_rx_ring *rx_ring, struct xdp_buff *xdp)
 		memcpy(&skinfo->frags[skinfo->nr_frags], &sinfo->frags[0],
 		       sizeof(skb_frag_t) * nr_frags);
 
-		xdp_update_skb_shared_info(skb, skinfo->nr_frags + nr_frags,
-					   sinfo->xdp_frags_size,
-					   nr_frags * xdp->frame_sz,
-					   xdp_buff_is_frag_pfmemalloc(xdp));
+		xdp_update_skb_frags_info(skb, skinfo->nr_frags + nr_frags,
+					  sinfo->xdp_frags_size,
+					  nr_frags * xdp->frame_sz,
+					  xdp_buff_get_skb_flags(xdp));
 	}
 
 	return skb;
@@ -1823,10 +1953,46 @@ ice_tx_map(struct ice_tx_ring *tx_ring, struct ice_tx_buf *first,
 	/* notify HW of packet */
 	kick = __netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount,
 				      netdev_xmit_more());
-	if (kick)
-		/* notify HW of packet */
-		writel(i, tx_ring->tail);
+	if (!kick)
+		return;
 
+	if (ice_is_txtime_cfg(tx_ring)) {
+		struct ice_tstamp_ring *tstamp_ring = tx_ring->tstamp_ring;
+		u32 tstamp_count = tstamp_ring->count;
+		u32 j = tstamp_ring->next_to_use;
+		struct ice_ts_desc *ts_desc;
+		struct timespec64 ts;
+		u32 tstamp;
+
+		ts = ktime_to_timespec64(first->skb->tstamp);
+		tstamp = ts.tv_nsec >> ICE_TXTIME_CTX_RESOLUTION_128NS;
+
+		ts_desc = ICE_TS_DESC(tstamp_ring, j);
+		ts_desc->tx_desc_idx_tstamp = ice_build_tstamp_desc(i, tstamp);
+
+		j++;
+		if (j == tstamp_count) {
+			u32 fetch = tstamp_count - tx_ring->count;
+
+			j = 0;
+
+			/* To prevent an MDD, when wrapping the tstamp ring
+			 * create additional TS descriptors equal to the number
+			 * of the fetch TS descriptors value. HW will merge the
+			 * TS descriptors with the same timestamp value into a
+			 * single descriptor.
+			 */
+			for (; j < fetch; j++) {
+				ts_desc = ICE_TS_DESC(tstamp_ring, j);
+				ts_desc->tx_desc_idx_tstamp =
+				       ice_build_tstamp_desc(i, tstamp);
+			}
+		}
+		tstamp_ring->next_to_use = j;
+		writel_relaxed(j, tstamp_ring->tail);
+	} else {
+		writel_relaxed(i, tx_ring->tail);
+	}
 	return;
 
 dma_error: