Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core:

   - Increase size limits for to-be-sent skb frag allocations. This
     allows tun, tap devices and packet sockets to better cope with
     large writes operations

   - Store netdevs in an xarray, to simplify iterating over netdevs

   - Refactor nexthop selection for multipath routes

   - Improve sched class lifetime handling

   - Add backup nexthop ID support for bridge

   - Implement drop reasons support in openvswitch

   - Several data races annotations and fixes

   - Constify the sk parameter of routing functions

   - Prepend kernel version to netconsole message

  Protocols:

   - Implement support for TCP probing the peer being under memory
     pressure

   - Remove hard coded limitation on IPv6 specific info placement inside
     the socket struct

   - Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated per
     socket scaling factor

   - Scaling-up the IPv6 expired route GC via a separated list of
     expiring routes

   - In-kernel support for the TLS alert protocol

   - Better support for UDP reuseport with connected sockets

   - Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
     header size

   - Get rid of additional ancillary per MPTCP connection struct socket

   - Implement support for BPF-based MPTCP packet schedulers

   - Format MPTCP subtests selftests results in TAP

   - Several new SMC 2.1 features including unique experimental options,
     max connections per lgr negotiation, max links per lgr negotiation

  BPF:

   - Multi-buffer support in AF_XDP

   - Add multi uprobe BPF links for attaching multiple uprobes and usdt
     probes, which is significantly faster and saves extra fds

   - Implement an fd-based tc BPF attach API (TCX) and BPF link support
     on top of it

   - Add SO_REUSEPORT support for TC bpf_sk_assign

   - Support new instructions from cpu v4 to simplify the generated code
     and feature completeness, for x86, arm64, riscv64

   - Support defragmenting IPv(4|6) packets in BPF

   - Teach verifier actual bounds of bpf_get_smp_processor_id() and fix
     perf+libbpf issue related to custom section handling

   - Introduce bpf map element count and enable it for all program types

   - Add a BPF hook in sys_socket() to change the protocol ID from
     IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy

   - Introduce bpf_me_mcache_free_rcu() and fix OOM under stress

   - Add uprobe support for the bpf_get_func_ip helper

   - Check skb ownership against full socket

   - Support for up to 12 arguments in BPF trampoline

   - Extend link_info for kprobe_multi and perf_event links

  Netfilter:

   - Speed-up process exit by aborting ruleset validation if a fatal
     signal is pending

   - Allow NLA_POLICY_MASK to be used with BE16/BE32 types

  Driver API:

   - Page pool optimizations, to improve data locality and cache usage

   - Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the
     need for raw ioctl() handling in drivers

   - Simplify genetlink dump operations (doit/dumpit) providing them the
     common information already populated in struct genl_info

   - Extend and use the yaml devlink specs to [re]generate the split ops

   - Introduce devlink selective dumps, to allow SF filtering SF based
     on handle and other attributes

   - Add yaml netlink spec for netlink-raw families, allow route, link
     and address related queries via the ynl tool

   - Remove phylink legacy mode support

   - Support offload LED blinking to phy

   - Add devlink port function attributes for IPsec

  New hardware / drivers:

   - Ethernet:
      - Broadcom ASP 2.0 (72165) ethernet controller
      - MediaTek MT7988 SoC
      - Texas Instruments AM654 SoC
      - Texas Instruments IEP driver
      - Atheros qca8081 phy
      - Marvell 88Q2110 phy
      - NXP TJA1120 phy

   - WiFi:
      - MediaTek mt7981 support

   - Can:
      - Kvaser SmartFusion2 PCI Express devices
      - Allwinner T113 controllers
      - Texas Instruments tcan4552/4553 chips

   - Bluetooth:
      - Intel Gale Peak
      - Qualcomm WCN3988 and WCN7850
      - NXP AW693 and IW624
      - Mediatek MT2925

  Drivers:

   - Ethernet NICs:
      - nVidia/Mellanox:
         - mlx5:
            - support UDP encapsulation in packet offload mode
            - IPsec packet offload support in eswitch mode
            - improve aRFS observability by adding new set of counters
            - extends MACsec offload support to cover RoCE traffic
            - dynamic completion EQs
         - mlx4:
            - convert to use auxiliary bus instead of custom interface
              logic
      - Intel
         - ice:
            - implement switchdev bridge offload, even for LAG
              interfaces
            - implement SRIOV support for LAG interfaces
         - igc:
            - add support for multiple in-flight TX timestamps
      - Broadcom:
         - bnxt:
            - use the unified RX page pool buffers for XDP and non-XDP
            - use the NAPI skb allocation cache
      - OcteonTX2:
         - support Round Robin scheduling HTB offload
         - TC flower offload support for SPI field
      - Freescale:
         - add XDP_TX feature support
      - AMD:
         - ionic: add support for PCI FLR event
         - sfc:
            - basic conntrack offload
            - introduce eth, ipv4 and ipv6 pedit offloads
      - ST Microelectronics:
         - stmmac: maximze PTP timestamping resolution

   - Virtual NICs:
      - Microsoft vNIC:
         - batch ringing RX queue doorbell on receiving packets
         - add page pool for RX buffers
      - Virtio vNIC:
         - add per queue interrupt coalescing support
      - Google vNIC:
         - add queue-page-list mode support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add port range matching tc-flower offload
         - permit enslavement to netdevices with uppers

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - convert to phylink_pcs
      - Renesas:
         - r8A779fx: add speed change support
         - rzn1: enables vlan support

   - Ethernet PHYs:
      - convert mv88e6xxx to phylink_pcs

   - WiFi:
      - Qualcomm Wi-Fi 7 (ath12k):
         - extremely High Throughput (EHT) PHY support
      - RealTek (rtl8xxxu):
         - enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
           RTL8192EU and RTL8723BU
      - RealTek (rtw89):
         - Introduce Time Averaged SAR (TAS) support

   - Connector:
      - support for event filtering"

* tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1806 commits)
  net: ethernet: mtk_wed: minor change in wed_{tx,rx}info_show
  net: ethernet: mtk_wed: add some more info in wed_txinfo_show handler
  net: stmmac: clarify difference between "interface" and "phy_interface"
  r8152: add vendor/device ID pair for D-Link DUB-E250
  devlink: move devlink_notify_register/unregister() to dev.c
  devlink: move small_ops definition into netlink.c
  devlink: move tracepoint definitions into core.c
  devlink: push linecard related code into separate file
  devlink: push rate related code into separate file
  devlink: push trap related code into separate file
  devlink: use tracepoint_enabled() helper
  devlink: push region related code into separate file
  devlink: push param related code into separate file
  devlink: push resource related code into separate file
  devlink: push dpipe related code into separate file
  devlink: move and rename devlink_dpipe_send_and_alloc_skb() helper
  devlink: push shared buffer related code into separate file
  devlink: push port related code into separate file
  devlink: push object register/unregister notifications into separate helpers
  inet: fix IP_TRANSPARENT error handling
  ...

1 files changed, 78 insertions, 64 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
index 5bb3cc3367c9..340240b8954f 100644
--- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c
@@ -10,6 +10,7 @@
 #include "fw/api/commands.h"
 #include "fw/api/tx.h"
 #include "fw/api/datapath.h"
+#include "fw/api/debug.h"
 #include "queue/tx.h"
 #include "iwl-fh.h"
 #include "iwl-scd.h"
@@ -84,6 +85,50 @@ static u8 iwl_txq_gen2_get_num_tbs(struct iwl_trans *trans,
 	return le16_to_cpu(tfd->num_tbs) & 0x1f;
 }
 
+int iwl_txq_gen2_set_tb(struct iwl_trans *trans, struct iwl_tfh_tfd *tfd,
+			dma_addr_t addr, u16 len)
+{
+	int idx = iwl_txq_gen2_get_num_tbs(trans, tfd);
+	struct iwl_tfh_tb *tb;
+
+	/* Only WARN here so we know about the issue, but we mess up our
+	 * unmap path because not every place currently checks for errors
+	 * returned from this function - it can only return an error if
+	 * there's no more space, and so when we know there is enough we
+	 * don't always check ...
+	 */
+	WARN(iwl_txq_crosses_4g_boundary(addr, len),
+	     "possible DMA problem with iova:0x%llx, len:%d\n",
+	     (unsigned long long)addr, len);
+
+	if (WARN_ON(idx >= IWL_TFH_NUM_TBS))
+		return -EINVAL;
+	tb = &tfd->tbs[idx];
+
+	/* Each TFD can point to a maximum max_tbs Tx buffers */
+	if (le16_to_cpu(tfd->num_tbs) >= trans->txqs.tfd.max_tbs) {
+		IWL_ERR(trans, "Error can not send more than %d chunks\n",
+			trans->txqs.tfd.max_tbs);
+		return -EINVAL;
+	}
+
+	put_unaligned_le64(addr, &tb->addr);
+	tb->tb_len = cpu_to_le16(len);
+
+	tfd->num_tbs = cpu_to_le16(idx + 1);
+
+	return idx;
+}
+
+static void iwl_txq_set_tfd_invalid_gen2(struct iwl_trans *trans,
+					 struct iwl_tfh_tfd *tfd)
+{
+	tfd->num_tbs = 0;
+
+	iwl_txq_gen2_set_tb(trans, tfd, trans->invalid_tx_cmd.dma,
+			    trans->invalid_tx_cmd.size);
+}
+
 void iwl_txq_gen2_tfd_unmap(struct iwl_trans *trans, struct iwl_cmd_meta *meta,
 			    struct iwl_tfh_tfd *tfd)
 {
@@ -111,7 +156,7 @@ void iwl_txq_gen2_tfd_unmap(struct iwl_trans *trans, struct iwl_cmd_meta *meta,
 					 DMA_TO_DEVICE);
 	}
 
-	tfd->num_tbs = 0;
+	iwl_txq_set_tfd_invalid_gen2(trans, tfd);
 }
 
 void iwl_txq_gen2_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
@@ -142,42 +187,6 @@ void iwl_txq_gen2_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
 	}
 }
 
-int iwl_txq_gen2_set_tb(struct iwl_trans *trans, struct iwl_tfh_tfd *tfd,
-			dma_addr_t addr, u16 len)
-{
-	int idx = iwl_txq_gen2_get_num_tbs(trans, tfd);
-	struct iwl_tfh_tb *tb;
-
-	/*
-	 * Only WARN here so we know about the issue, but we mess up our
-	 * unmap path because not every place currently checks for errors
-	 * returned from this function - it can only return an error if
-	 * there's no more space, and so when we know there is enough we
-	 * don't always check ...
-	 */
-	WARN(iwl_txq_crosses_4g_boundary(addr, len),
-	     "possible DMA problem with iova:0x%llx, len:%d\n",
-	     (unsigned long long)addr, len);
-
-	if (WARN_ON(idx >= IWL_TFH_NUM_TBS))
-		return -EINVAL;
-	tb = &tfd->tbs[idx];
-
-	/* Each TFD can point to a maximum max_tbs Tx buffers */
-	if (le16_to_cpu(tfd->num_tbs) >= trans->txqs.tfd.max_tbs) {
-		IWL_ERR(trans, "Error can not send more than %d chunks\n",
-			trans->txqs.tfd.max_tbs);
-		return -EINVAL;
-	}
-
-	put_unaligned_le64(addr, &tb->addr);
-	tb->tb_len = cpu_to_le16(len);
-
-	tfd->num_tbs = cpu_to_le16(idx + 1);
-
-	return idx;
-}
-
 static struct page *get_workaround_page(struct iwl_trans *trans,
 					struct sk_buff *skb)
 {
@@ -1026,11 +1035,21 @@ static void iwl_txq_stuck_timer(struct timer_list *t)
 	iwl_force_nmi(trans);
 }
 
+static void iwl_txq_set_tfd_invalid_gen1(struct iwl_trans *trans,
+					 struct iwl_tfd *tfd)
+{
+	tfd->num_tbs = 0;
+
+	iwl_pcie_gen1_tfd_set_tb(trans, tfd, 0, trans->invalid_tx_cmd.dma,
+				 trans->invalid_tx_cmd.size);
+}
+
 int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
 		  bool cmd_queue)
 {
-	size_t tfd_sz = trans->txqs.tfd.size *
-		trans->trans_cfg->base_params->max_tfd_queue_size;
+	size_t num_entries = trans->trans_cfg->gen2 ?
+		slots_num : trans->trans_cfg->base_params->max_tfd_queue_size;
+	size_t tfd_sz;
 	size_t tb0_buf_sz;
 	int i;
 
@@ -1040,8 +1059,7 @@ int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
 	if (WARN_ON(txq->entries || txq->tfds))
 		return -EINVAL;
 
-	if (trans->trans_cfg->gen2)
-		tfd_sz = trans->txqs.tfd.size * slots_num;
+	tfd_sz = trans->txqs.tfd.size * num_entries;
 
 	timer_setup(&txq->stuck_timer, iwl_txq_stuck_timer, 0);
 	txq->trans = trans;
@@ -1081,6 +1099,15 @@ int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,
 	if (!txq->first_tb_bufs)
 		goto err_free_tfds;
 
+	for (i = 0; i < num_entries; i++) {
+		void *tfd = iwl_txq_get_tfd(trans, txq, i);
+
+		if (trans->trans_cfg->gen2)
+			iwl_txq_set_tfd_invalid_gen2(trans, tfd);
+		else
+			iwl_txq_set_tfd_invalid_gen1(trans, tfd);
+	}
+
 	return 0;
 err_free_tfds:
 	dma_free_coherent(trans->dev, tfd_sz, txq->tfds, txq->dma_addr);
@@ -1340,22 +1367,12 @@ error:
 }
 
 static inline dma_addr_t iwl_txq_gen1_tfd_tb_get_addr(struct iwl_trans *trans,
-						      void *_tfd, u8 idx)
+						      struct iwl_tfd *tfd, u8 idx)
 {
-	struct iwl_tfd *tfd;
-	struct iwl_tfd_tb *tb;
+	struct iwl_tfd_tb *tb = &tfd->tbs[idx];
 	dma_addr_t addr;
 	dma_addr_t hi_len;
 
-	if (trans->trans_cfg->gen2) {
-		struct iwl_tfh_tfd *tfh_tfd = _tfd;
-		struct iwl_tfh_tb *tfh_tb = &tfh_tfd->tbs[idx];
-
-		return (dma_addr_t)(le64_to_cpu(tfh_tb->addr));
-	}
-
-	tfd = _tfd;
-	tb = &tfd->tbs[idx];
 	addr = get_unaligned_le32(&tb->lo);
 
 	if (sizeof(dma_addr_t) <= sizeof(u32))
@@ -1376,7 +1393,7 @@ void iwl_txq_gen1_tfd_unmap(struct iwl_trans *trans,
 			    struct iwl_txq *txq, int index)
 {
 	int i, num_tbs;
-	void *tfd = iwl_txq_get_tfd(trans, txq, index);
+	struct iwl_tfd *tfd = iwl_txq_get_tfd(trans, txq, index);
 
 	/* Sanity check on number of chunks */
 	num_tbs = iwl_txq_gen1_tfd_get_num_tbs(trans, tfd);
@@ -1408,15 +1425,7 @@ void iwl_txq_gen1_tfd_unmap(struct iwl_trans *trans,
 
 	meta->tbs = 0;
 
-	if (trans->trans_cfg->gen2) {
-		struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
-
-		tfd_fh->num_tbs = 0;
-	} else {
-		struct iwl_tfd *tfd_fh = (void *)tfd;
-
-		tfd_fh->num_tbs = 0;
-	}
+	iwl_txq_set_tfd_invalid_gen1(trans, tfd);
 }
 
 #define IWL_TX_CRC_SIZE 4
@@ -1520,7 +1529,12 @@ void iwl_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
 	/* We have only q->n_window txq->entries, but we use
 	 * TFD_QUEUE_SIZE_MAX tfds
 	 */
-	iwl_txq_gen1_tfd_unmap(trans, &txq->entries[idx].meta, txq, rd_ptr);
+	if (trans->trans_cfg->gen2)
+		iwl_txq_gen2_tfd_unmap(trans, &txq->entries[idx].meta,
+				       iwl_txq_get_tfd(trans, txq, rd_ptr));
+	else
+		iwl_txq_gen1_tfd_unmap(trans, &txq->entries[idx].meta,
+				       txq, rd_ptr);
 
 	/* free SKB */
 	skb = txq->entries[idx].skb;