Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Wrap datapath globals into net_aligned_data, to avoid false sharing

   - Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container)

   - Add SO_INQ and SCM_INQ support to AF_UNIX

   - Add SIOCINQ support to AF_VSOCK

   - Add TCP_MAXSEG sockopt to MPTCP

   - Add IPv6 force_forwarding sysctl to enable forwarding per interface

   - Make TCP validation of whether packet fully fits in the receive
     window and the rcv_buf more strict. With increased use of HW
     aggregation a single "packet" can be multiple 100s of kB

   - Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
     improves latency up to 33% for sockmap users

   - Convert TCP send queue handling from tasklet to BH workque

   - Improve BPF iteration over TCP sockets to see each socket exactly
     once

   - Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code

   - Support enabling kernel threads for NAPI processing on per-NAPI
     instance basis rather than a whole device. Fully stop the kernel
     NAPI thread when threaded NAPI gets disabled. Previously thread
     would stick around until ifdown due to tricky synchronization

   - Allow multicast routing to take effect on locally-generated packets

   - Add output interface argument for End.X in segment routing

   - MCTP: add support for gateway routing, improve bind() handling

   - Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink

   - Add a new neighbor flag ("extern_valid"), which cedes refresh
     responsibilities to userspace. This is needed for EVPN multi-homing
     where a neighbor entry for a multi-homed host needs to be synced
     across all the VTEPs among which the host is multi-homed

   - Support NUD_PERMANENT for proxy neighbor entries

   - Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM

   - Add sequence numbers to netconsole messages. Unregister
     netconsole's console when all net targets are removed. Code
     refactoring. Add a number of selftests

   - Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
     should be used for an inbound SA lookup

   - Support inspecting ref_tracker state via DebugFS

   - Don't force bonding advertisement frames tx to ~333 ms boundaries.
     Add broadcast_neighbor option to send ARP/ND on all bonded links

   - Allow providing upcall pid for the 'execute' command in openvswitch

   - Remove DCCP support from Netfilter's conntrack

   - Disallow multiple packet duplications in the queuing layer

   - Prevent use of deprecated iptables code on PREEMPT_RT

  Driver API:

   - Support RSS and hashing configuration over ethtool Netlink

   - Add dedicated ethtool callbacks for getting and setting hashing
     fields

   - Add support for power budget evaluation strategy in PSE /
     Power-over-Ethernet. Generate Netlink events for overcurrent etc

   - Support DPLL phase offset monitoring across all device inputs.
     Support providing clock reference and SYNC over separate DPLL
     inputs

   - Support traffic classes in devlink rate API for bandwidth
     management

   - Remove rtnl_lock dependency from UDP tunnel port configuration

  Device drivers:

   - Add a new Broadcom driver for 800G Ethernet (bnge)

   - Add a standalone driver for Microchip ZL3073x DPLL

   - Remove IBM's NETIUCV device driver

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support zero-copy Tx of DMABUF memory
         - take page size into account for page pool recycling rings
      - Intel (100G, ice, idpf):
         - idpf: XDP and AF_XDP support preparations
         - idpf: add flow steering
         - add link_down_events statistic
         - clean up the TSPLL code
         - preparations for live VM migration
      - nVidia/Mellanox:
         - support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
         - optimize context memory usage for matchers
         - expose serial numbers in devlink info
         - support PCIe congestion metrics
      - Meta (fbnic):
         - add 25G, 50G, and 100G link modes to phylink
         - support dumping FW logs
      - Marvell/Cavium:
         - support for CN20K generation of the Octeon chips
      - Amazon:
         - add HW clock (without timestamping, just hypervisor time access)

   - Ethernet virtual:
      - VirtIO net:
         - support segmentation of UDP-tunnel-encapsulated packets
      - Google (gve):
         - support packet timestamping and clock synchronization
      - Microsoft vNIC:
         - add handler for device-originated servicing events
         - allow dynamic MSI-X vector allocation
         - support Tx bandwidth clamping

   - Ethernet NICs consumer, and embedded:
      - AMD:
         - amd-xgbe: hardware timestamping and PTP clock support
      - Broadcom integrated MACs (bcmgenet, bcmasp):
         - use napi_complete_done() return value to support NAPI polling
         - add support for re-starting auto-negotiation
      - Broadcom switches (b53):
         - support BCM5325 switches
         - add bcm63xx EPHY power control
      - Synopsys (stmmac):
         - lots of code refactoring and cleanups
      - TI:
         - icssg-prueth: read firmware-names from device tree
         - icssg: PRP offload support
      - Microchip:
         - lan78xx: convert to PHYLINK for improved PHY and MAC management
         - ksz: add KSZ8463 switch support
      - Intel:
         - support similar queue priority scheme in multi-queue and
           time-sensitive networking (taprio)
         - support packet pre-emption in both
      - RealTek (r8169):
         - enable EEE at 5Gbps on RTL8126
      - Airoha:
         - add PPPoE offload support
         - MDIO bus controller for Airoha AN7583

   - Ethernet PHYs:
      - support for the IPQ5018 internal GE PHY
      - micrel KSZ9477 switch-integrated PHYs:
         - add MDI/MDI-X control support
         - add RX error counters
         - add cable test support
         - add Signal Quality Indicator (SQI) reporting
      - dp83tg720: improve reset handling and reduce link recovery time
      - support bcm54811 (and its MII-Lite interface type)
      - air_en8811h: support resume/suspend
      - support PHY counters for QCA807x and QCA808x
      - support WoL for QCA807x

   - CAN drivers:
      - rcar_canfd: support for Transceiver Delay Compensation
      - kvaser: report FW versions via devlink dev info

   - WiFi:
      - extended regulatory info support (6 GHz)
      - add statistics and beacon monitor for Multi-Link Operation (MLO)
      - support S1G aggregation, improve S1G support
      - add Radio Measurement action fields
      - support per-radio RTS threshold
      - some work around how FIPS affects wifi, which was wrong (RC4 is
        used by TKIP, not only WEP)
      - improvements for unsolicited probe response handling

   - WiFi drivers:
      - RealTek (rtw88):
         - IBSS mode for SDIO devices
      - RealTek (rtw89):
         - BT coexistence for MLO/WiFi7
         - concurrent station + P2P support
         - support for USB devices RTL8851BU/RTL8852BU
      - Intel (iwlwifi):
         - use embedded PNVM in (to be released) FW images to fix
           compatibility issues
         - many cleanups (unused FW APIs, PCIe code, WoWLAN)
         - some FIPS interoperability
      - MediaTek (mt76):
         - firmware recovery improvements
         - more MLO work
      - Qualcomm/Atheros (ath12k):
         - fix scan on multi-radio devices
         - more EHT/Wi-Fi 7 features
         - encapsulation/decapsulation offload
      - Broadcom (brcm80211):
         - support SDIO 43751 device

   - Bluetooth:
      - hci_event: add support for handling LE BIG Sync Lost event
      - ISO: add socket option to report packet seqnum via CMSG
      - ISO: support SCM_TIMESTAMPING for ISO TS

   - Bluetooth drivers:
      - intel_pcie: support Function Level Reset
      - nxpuart: add support for 4M baudrate
      - nxpuart: implement powerup sequence, reset, FW dump, and FW loading"

* tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits)
  dpll: zl3073x: Fix build failure
  selftests: bpf: fix legacy netfilter options
  ipv6: annotate data-races around rt->fib6_nsiblings
  ipv6: fix possible infinite loop in fib6_info_uses_dev()
  ipv6: prevent infinite loop in rt6_nlmsg_size()
  ipv6: add a retry logic in net6_rt_notify()
  vrf: Drop existing dst reference in vrf_ip6_input_dst
  net/sched: taprio: align entry index attr validation with mqprio
  net: fsl_pq_mdio: use dev_err_probe
  selftests: rtnetlink.sh: remove esp4_offload after test
  vsock: remove unnecessary null check in vsock_getname()
  igb: xsk: solve negative overflow of nb_pkts in zerocopy mode
  stmmac: xsk: fix negative overflow of budget in zerocopy mode
  dt-bindings: ieee802154: Convert at86rf230.txt yaml format
  net: dsa: microchip: Disable PTP function of KSZ8463
  net: dsa: microchip: Setup fiber ports for KSZ8463
  net: dsa: microchip: Write switch MAC address differently for KSZ8463
  net: dsa: microchip: Use different registers for KSZ8463
  net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver
  dt-bindings: net: dsa: microchip: Add KSZ8463 switch support
  ...

1 files changed, 152 insertions, 68 deletions

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 24046fe16634..6f0821f1e798 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -211,98 +211,169 @@ static inline void ibmveth_flush_buffer(void *addr, unsigned long length)
 static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter,
 					  struct ibmveth_buff_pool *pool)
 {
-	u32 i;
-	u32 count = pool->size - atomic_read(&pool->available);
-	u32 buffers_added = 0;
-	struct sk_buff *skb;
-	unsigned int free_index, index;
-	u64 correlator;
+	union ibmveth_buf_desc descs[IBMVETH_MAX_RX_PER_HCALL] = {0};
+	u32 remaining = pool->size - atomic_read(&pool->available);
+	u64 correlators[IBMVETH_MAX_RX_PER_HCALL] = {0};
 	unsigned long lpar_rc;
+	u32 buffers_added = 0;
+	u32 i, filled, batch;
+	struct vio_dev *vdev;
 	dma_addr_t dma_addr;
+	struct device *dev;
+	u32 index;
+
+	vdev = adapter->vdev;
+	dev = &vdev->dev;
 
 	mb();
 
-	for (i = 0; i < count; ++i) {
-		union ibmveth_buf_desc desc;
+	batch = adapter->rx_buffers_per_hcall;
 
-		free_index = pool->consumer_index;
-		index = pool->free_map[free_index];
-		skb = NULL;
+	while (remaining > 0) {
+		unsigned int free_index = pool->consumer_index;
 
-		if (WARN_ON(index == IBM_VETH_INVALID_MAP)) {
-			schedule_work(&adapter->work);
-			goto bad_index_failure;
-		}
+		/* Fill a batch of descriptors */
+		for (filled = 0; filled < min(remaining, batch); filled++) {
+			index = pool->free_map[free_index];
+			if (WARN_ON(index == IBM_VETH_INVALID_MAP)) {
+				adapter->replenish_add_buff_failure++;
+				netdev_info(adapter->netdev,
+					    "Invalid map index %u, reset\n",
+					    index);
+				schedule_work(&adapter->work);
+				break;
+			}
+
+			if (!pool->skbuff[index]) {
+				struct sk_buff *skb = NULL;
 
-		/* are we allocating a new buffer or recycling an old one */
-		if (pool->skbuff[index])
-			goto reuse;
+				skb = netdev_alloc_skb(adapter->netdev,
+						       pool->buff_size);
+				if (!skb) {
+					adapter->replenish_no_mem++;
+					adapter->replenish_add_buff_failure++;
+					break;
+				}
 
-		skb = netdev_alloc_skb(adapter->netdev, pool->buff_size);
+				dma_addr = dma_map_single(dev, skb->data,
+							  pool->buff_size,
+							  DMA_FROM_DEVICE);
+				if (dma_mapping_error(dev, dma_addr)) {
+					dev_kfree_skb_any(skb);
+					adapter->replenish_add_buff_failure++;
+					break;
+				}
 
-		if (!skb) {
-			netdev_dbg(adapter->netdev,
-				   "replenish: unable to allocate skb\n");
-			adapter->replenish_no_mem++;
-			break;
-		}
+				pool->dma_addr[index] = dma_addr;
+				pool->skbuff[index] = skb;
+			} else {
+				/* re-use case */
+				dma_addr = pool->dma_addr[index];
+			}
 
-		dma_addr = dma_map_single(&adapter->vdev->dev, skb->data,
-				pool->buff_size, DMA_FROM_DEVICE);
+			if (rx_flush) {
+				unsigned int len;
 
-		if (dma_mapping_error(&adapter->vdev->dev, dma_addr))
-			goto failure;
+				len = adapter->netdev->mtu + IBMVETH_BUFF_OH;
+				len = min(pool->buff_size, len);
+				ibmveth_flush_buffer(pool->skbuff[index]->data,
+						     len);
+			}
 
-		pool->dma_addr[index] = dma_addr;
-		pool->skbuff[index] = skb;
+			descs[filled].fields.flags_len = IBMVETH_BUF_VALID |
+							  pool->buff_size;
+			descs[filled].fields.address = dma_addr;
 
-		if (rx_flush) {
-			unsigned int len = min(pool->buff_size,
-					       adapter->netdev->mtu +
-					       IBMVETH_BUFF_OH);
-			ibmveth_flush_buffer(skb->data, len);
-		}
-reuse:
-		dma_addr = pool->dma_addr[index];
-		desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size;
-		desc.fields.address = dma_addr;
+			correlators[filled] = ((u64)pool->index << 32) | index;
+			*(u64 *)pool->skbuff[index]->data = correlators[filled];
 
-		correlator = ((u64)pool->index << 32) | index;
-		*(u64 *)pool->skbuff[index]->data = correlator;
+			free_index++;
+			if (free_index >= pool->size)
+				free_index = 0;
+		}
 
-		lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address,
-						   desc.desc);
+		if (!filled)
+			break;
 
+		/* single buffer case*/
+		if (filled == 1)
+			lpar_rc = h_add_logical_lan_buffer(vdev->unit_address,
+							   descs[0].desc);
+		else
+			/* Multi-buffer hcall */
+			lpar_rc = h_add_logical_lan_buffers(vdev->unit_address,
+							    descs[0].desc,
+							    descs[1].desc,
+							    descs[2].desc,
+							    descs[3].desc,
+							    descs[4].desc,
+							    descs[5].desc,
+							    descs[6].desc,
+							    descs[7].desc);
 		if (lpar_rc != H_SUCCESS) {
-			netdev_warn(adapter->netdev,
-				    "%sadd_logical_lan failed %lu\n",
-				    skb ? "" : "When recycling: ", lpar_rc);
-			goto failure;
+			dev_warn_ratelimited(dev,
+					     "RX h_add_logical_lan failed: filled=%u, rc=%lu, batch=%u\n",
+					     filled, lpar_rc, batch);
+			goto hcall_failure;
 		}
 
-		pool->free_map[free_index] = IBM_VETH_INVALID_MAP;
-		pool->consumer_index++;
-		if (pool->consumer_index >= pool->size)
-			pool->consumer_index = 0;
+		/* Only update pool state after hcall succeeds */
+		for (i = 0; i < filled; i++) {
+			free_index = pool->consumer_index;
+			pool->free_map[free_index] = IBM_VETH_INVALID_MAP;
 
-		buffers_added++;
-		adapter->replenish_add_buff_success++;
-	}
+			pool->consumer_index++;
+			if (pool->consumer_index >= pool->size)
+				pool->consumer_index = 0;
+		}
 
-	mb();
-	atomic_add(buffers_added, &(pool->available));
-	return;
+		buffers_added += filled;
+		adapter->replenish_add_buff_success += filled;
+		remaining -= filled;
 
-failure:
+		memset(&descs, 0, sizeof(descs));
+		memset(&correlators, 0, sizeof(correlators));
+		continue;
 
-	if (dma_addr && !dma_mapping_error(&adapter->vdev->dev, dma_addr))
-		dma_unmap_single(&adapter->vdev->dev,
-		                 pool->dma_addr[index], pool->buff_size,
-		                 DMA_FROM_DEVICE);
-	dev_kfree_skb_any(pool->skbuff[index]);
-	pool->skbuff[index] = NULL;
-bad_index_failure:
-	adapter->replenish_add_buff_failure++;
+hcall_failure:
+		for (i = 0; i < filled; i++) {
+			index = correlators[i] & 0xffffffffUL;
+			dma_addr =  pool->dma_addr[index];
+
+			if (pool->skbuff[index]) {
+				if (dma_addr &&
+				    !dma_mapping_error(dev, dma_addr))
+					dma_unmap_single(dev, dma_addr,
+							 pool->buff_size,
+							 DMA_FROM_DEVICE);
+
+				dev_kfree_skb_any(pool->skbuff[index]);
+				pool->skbuff[index] = NULL;
+			}
+		}
+		adapter->replenish_add_buff_failure += filled;
+
+		/*
+		 * If multi rx buffers hcall is no longer supported by FW
+		 * e.g. in the case of Live Parttion Migration
+		 */
+		if (batch > 1 && lpar_rc == H_FUNCTION) {
+			/*
+			 * Instead of retry submit single buffer individually
+			 * here just set the max rx buffer per hcall to 1
+			 * buffers will be respleshed next time
+			 * when ibmveth_replenish_buffer_pool() is called again
+			 * with single-buffer case
+			 */
+			netdev_info(adapter->netdev,
+				    "RX Multi buffers not supported by FW, rc=%lu\n",
+				    lpar_rc);
+			adapter->rx_buffers_per_hcall = 1;
+			netdev_info(adapter->netdev,
+				    "Next rx replesh will fall back to single-buffer hcall\n");
+		}
+		break;
+	}
 
 	mb();
 	atomic_add(buffers_added, &(pool->available));
@@ -1783,6 +1854,19 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
 		netdev->features |= NETIF_F_FRAGLIST;
 	}
 
+	if (ret == H_SUCCESS &&
+	    (ret_attr & IBMVETH_ILLAN_RX_MULTI_BUFF_SUPPORT)) {
+		adapter->rx_buffers_per_hcall = IBMVETH_MAX_RX_PER_HCALL;
+		netdev_dbg(netdev,
+			   "RX Multi-buffer hcall supported by FW, batch set to %u\n",
+			    adapter->rx_buffers_per_hcall);
+	} else {
+		adapter->rx_buffers_per_hcall = 1;
+		netdev_dbg(netdev,
+			   "RX Single-buffer hcall mode, batch set to %u\n",
+			   adapter->rx_buffers_per_hcall);
+	}
+
 	netdev->min_mtu = IBMVETH_MIN_MTU;
 	netdev->max_mtu = ETH_MAX_MTU - IBMVETH_BUFF_OH;