Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Remove socket skb caches

   - Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
     avoid memory accounting overhead on each message sent

   - Introduce managed neighbor entries - added by control plane and
     resolved by the kernel for use in acceleration paths (BPF / XDP
     right now, HW offload users will benefit as well)

   - Make neighbor eviction on link down controllable by userspace to
     work around WiFi networks with bad roaming implementations

   - vrf: Rework interaction with netfilter/conntrack

   - fq_codel: implement L4S style ce_threshold_ect1 marking

   - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()

  BPF:

   - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
     as implemented in LLVM14

   - Introduce bpf_get_branch_snapshot() to capture Last Branch Records

   - Implement variadic trace_printk helper

   - Add a new Bloomfilter map type

   - Track <8-byte scalar spill and refill

   - Access hw timestamp through BPF's __sk_buff

   - Disallow unprivileged BPF by default

   - Document BPF licensing

  Netfilter:

   - Introduce egress hook for looking at raw outgoing packets

   - Allow matching on and modifying inner headers / payload data

   - Add NFT_META_IFTYPE to match on the interface type either from
     ingress or egress

  Protocols:

   - Multi-Path TCP:
      - increase default max additional subflows to 2
      - rework forward memory allocation
      - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS

   - MCTP flow support allowing lower layer drivers to configure msg
     muxing as needed

   - Automatic Multicast Tunneling (AMT) driver based on RFC7450

   - HSR support the redbox supervision frames (IEC-62439-3:2018)

   - Support for the ip6ip6 encapsulation of IOAM

   - Netlink interface for CAN-FD's Transmitter Delay Compensation

   - Support SMC-Rv2 eliminating the current same-subnet restriction, by
     exploiting the UDP encapsulation feature of RoCE adapters

   - TLS: add SM4 GCM/CCM crypto support

   - Bluetooth: initial support for link quality and audio/codec offload

  Driver APIs:

   - Add a batched interface for RX buffer allocation in AF_XDP buffer
     pool

   - ethtool: Add ability to control transceiver modules' power mode

   - phy: Introduce supported interfaces bitmap to express MAC
     capabilities and simplify PHY code

   - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks

  New drivers:

   - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)

   - Ethernet driver for ASIX AX88796C SPI device (x88796c)

  Drivers:

   - Broadcom PHYs
      - support 72165, 7712 16nm PHYs
      - support IDDQ-SR for additional power savings

   - PHY support for QCA8081, QCA9561 PHYs

   - NXP DPAA2: support for IRQ coalescing

   - NXP Ethernet (enetc): support for software TCP segmentation

   - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
     Gigabit-capable IP found on RZ/G2L SoC

   - Intel 100G Ethernet
      - support for eswitch offload of TC/OvS flow API, including
        offload of GRE, VxLAN, Geneve tunneling
      - support application device queues - ability to assign Rx and Tx
        queues to application threads
      - PTP and PPS (pulse-per-second) extensions

   - Broadcom Ethernet (bnxt)
      - devlink health reporting and device reload extensions

   - Mellanox Ethernet (mlx5)
      - offload macvlan interfaces
      - support HW offload of TC rules involving OVS internal ports
      - support HW-GRO and header/data split
      - support application device queues

   - Marvell OcteonTx2:
      - add XDP support for PF
      - add PTP support for VF

   - Qualcomm Ethernet switch (qca8k): support for QCA8328

   - Realtek Ethernet DSA switch (rtl8366rb)
      - support bridge offload
      - support STP, fast aging, disabling address learning
      - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch

   - Mellanox Ethernet/IB switch (mlxsw)
      - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
      - offload root TBF qdisc as port shaper
      - support multiple routing interface MAC address prefixes
      - support for IP-in-IP with IPv6 underlay

   - MediaTek WiFi (mt76)
      - mt7921 - ASPM, 6GHz, SDIO and testmode support
      - mt7915 - LED and TWT support

   - Qualcomm WiFi (ath11k)
      - include channel rx and tx time in survey dump statistics
      - support for 80P80 and 160 MHz bandwidths
      - support channel 2 in 6 GHz band
      - spectral scan support for QCN9074
      - support for rx decapsulation offload (data frames in 802.3
        format)

   - Qualcomm phone SoC WiFi (wcn36xx)
      - enable Idle Mode Power Save (IMPS) to reduce power consumption
        during idle

   - Bluetooth driver support for MediaTek MT7922 and MT7921

   - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
     Realtek 8822C/8852A

   - Microsoft vNIC driver (mana)
      - support hibernation and kexec

   - Google vNIC driver (gve)
      - support for jumbo frames
      - implement Rx page reuse

  Refactor:

   - Make all writes to netdev->dev_addr go thru helpers, so that we can
     add this address to the address rbtree and handle the updates

   - Various TCP cleanups and optimizations including improvements to
     CPU cache use

   - Simplify the gnet_stats, Qdisc stats' handling and remove
     qdisc->running sequence counter

   - Driver changes and API updates to address devlink locking
     deficiencies"

* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
  Revert "net: avoid double accounting for pure zerocopy skbs"
  selftests: net: add arp_ndisc_evict_nocarrier
  net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
  net: arp: introduce arp_evict_nocarrier sysctl parameter
  libbpf: Deprecate AF_XDP support
  kbuild: Unify options for BTF generation for vmlinux and modules
  selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
  bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
  bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
  net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
  net: avoid double accounting for pure zerocopy skbs
  tcp: rename sk_wmem_free_skb
  netdevsim: fix uninit value in nsim_drv_configure_vfs()
  selftests/bpf: Fix also no-alu32 strobemeta selftest
  bpf: Add missing map_delete_elem method to bloom filter map
  selftests/bpf: Add bloom map success test for userspace calls
  bpf: Add alignment padding for "map_extra" + consolidate holes
  bpf: Bloom filter map naming fixups
  selftests/bpf: Add test cases for struct_ops prog
  bpf: Add dummy BPF STRUCT_OPS for test purpose
  ...

1 files changed, 190 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/sar.c b/drivers/net/wireless/realtek/rtw89/sar.c
new file mode 100644
index 000000000000..097c87899cea
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtw89/sar.c
@@ -0,0 +1,190 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright(c) 2019-2020  Realtek Corporation
+ */
+
+#include "debug.h"
+#include "sar.h"
+
+static int rtw89_query_sar_config_common(struct rtw89_dev *rtwdev, s32 *cfg)
+{
+	struct rtw89_sar_cfg_common *rtwsar = &rtwdev->sar.cfg_common;
+	enum rtw89_subband subband = rtwdev->hal.current_subband;
+
+	if (!rtwsar->set[subband])
+		return -ENODATA;
+
+	*cfg = rtwsar->cfg[subband];
+	return 0;
+}
+
+static const
+struct rtw89_sar_handler rtw89_sar_handlers[RTW89_SAR_SOURCE_NR] = {
+	[RTW89_SAR_SOURCE_COMMON] = {
+		.descr_sar_source = "RTW89_SAR_SOURCE_COMMON",
+		.txpwr_factor_sar = 2,
+		.query_sar_config = rtw89_query_sar_config_common,
+	},
+};
+
+#define rtw89_sar_set_src(_dev, _src, _cfg_name, _cfg_data)		\
+	do {								\
+		typeof(_src) _s = (_src);				\
+		typeof(_dev) _d = (_dev);				\
+		BUILD_BUG_ON(!rtw89_sar_handlers[_s].descr_sar_source);	\
+		BUILD_BUG_ON(!rtw89_sar_handlers[_s].query_sar_config);	\
+		lockdep_assert_held(&_d->mutex);			\
+		_d->sar._cfg_name = *(_cfg_data);			\
+		_d->sar.src = _s;					\
+	} while (0)
+
+static s8 rtw89_txpwr_sar_to_mac(struct rtw89_dev *rtwdev, u8 fct, s32 cfg)
+{
+	const u8 fct_mac = rtwdev->chip->txpwr_factor_mac;
+	s32 cfg_mac;
+
+	cfg_mac = fct > fct_mac ?
+		  cfg >> (fct - fct_mac) : cfg << (fct_mac - fct);
+
+	return (s8)clamp_t(s32, cfg_mac,
+			   RTW89_SAR_TXPWR_MAC_MIN,
+			   RTW89_SAR_TXPWR_MAC_MAX);
+}
+
+s8 rtw89_query_sar(struct rtw89_dev *rtwdev)
+{
+	const enum rtw89_sar_sources src = rtwdev->sar.src;
+	/* its members are protected by rtw89_sar_set_src() */
+	const struct rtw89_sar_handler *sar_hdl = &rtw89_sar_handlers[src];
+	int ret;
+	s32 cfg;
+	u8 fct;
+
+	lockdep_assert_held(&rtwdev->mutex);
+
+	if (src == RTW89_SAR_SOURCE_NONE)
+		return RTW89_SAR_TXPWR_MAC_MAX;
+
+	ret = sar_hdl->query_sar_config(rtwdev, &cfg);
+	if (ret)
+		return RTW89_SAR_TXPWR_MAC_MAX;
+
+	fct = sar_hdl->txpwr_factor_sar;
+
+	return rtw89_txpwr_sar_to_mac(rtwdev, fct, cfg);
+}
+
+void rtw89_print_sar(struct seq_file *m, struct rtw89_dev *rtwdev)
+{
+	const enum rtw89_sar_sources src = rtwdev->sar.src;
+	/* its members are protected by rtw89_sar_set_src() */
+	const struct rtw89_sar_handler *sar_hdl = &rtw89_sar_handlers[src];
+	const u8 fct_mac = rtwdev->chip->txpwr_factor_mac;
+	int ret;
+	s32 cfg;
+	u8 fct;
+
+	lockdep_assert_held(&rtwdev->mutex);
+
+	if (src == RTW89_SAR_SOURCE_NONE) {
+		seq_puts(m, "no SAR is applied\n");
+		return;
+	}
+
+	seq_printf(m, "source: %d (%s)\n", src, sar_hdl->descr_sar_source);
+
+	ret = sar_hdl->query_sar_config(rtwdev, &cfg);
+	if (ret) {
+		seq_printf(m, "config: return code: %d\n", ret);
+		seq_printf(m, "assign: max setting: %d (unit: 1/%lu dBm)\n",
+			   RTW89_SAR_TXPWR_MAC_MAX, BIT(fct_mac));
+		return;
+	}
+
+	fct = sar_hdl->txpwr_factor_sar;
+
+	seq_printf(m, "config: %d (unit: 1/%lu dBm)\n", cfg, BIT(fct));
+}
+
+static int rtw89_apply_sar_common(struct rtw89_dev *rtwdev,
+				  const struct rtw89_sar_cfg_common *sar)
+{
+	enum rtw89_sar_sources src;
+	int ret = 0;
+
+	mutex_lock(&rtwdev->mutex);
+
+	src = rtwdev->sar.src;
+	if (src != RTW89_SAR_SOURCE_NONE && src != RTW89_SAR_SOURCE_COMMON) {
+		rtw89_warn(rtwdev, "SAR source: %d is in use", src);
+		ret = -EBUSY;
+		goto exit;
+	}
+
+	rtw89_sar_set_src(rtwdev, RTW89_SAR_SOURCE_COMMON, cfg_common, sar);
+	rtw89_chip_set_txpwr(rtwdev);
+
+exit:
+	mutex_unlock(&rtwdev->mutex);
+	return ret;
+}
+
+static const u8 rtw89_common_sar_subband_map[] = {
+	RTW89_CH_2G,
+	RTW89_CH_5G_BAND_1,
+	RTW89_CH_5G_BAND_3,
+	RTW89_CH_5G_BAND_4,
+};
+
+static const struct cfg80211_sar_freq_ranges rtw89_common_sar_freq_ranges[] = {
+	{ .start_freq = 2412, .end_freq = 2484, },
+	{ .start_freq = 5180, .end_freq = 5320, },
+	{ .start_freq = 5500, .end_freq = 5720, },
+	{ .start_freq = 5745, .end_freq = 5825, },
+};
+
+static_assert(ARRAY_SIZE(rtw89_common_sar_subband_map) ==
+	      ARRAY_SIZE(rtw89_common_sar_freq_ranges));
+
+const struct cfg80211_sar_capa rtw89_sar_capa = {
+	.type = NL80211_SAR_TYPE_POWER,
+	.num_freq_ranges = ARRAY_SIZE(rtw89_common_sar_freq_ranges),
+	.freq_ranges = rtw89_common_sar_freq_ranges,
+};
+
+int rtw89_ops_set_sar_specs(struct ieee80211_hw *hw,
+			    const struct cfg80211_sar_specs *sar)
+{
+	struct rtw89_dev *rtwdev = hw->priv;
+	struct rtw89_sar_cfg_common sar_common = {0};
+	u8 fct;
+	u32 freq_start;
+	u32 freq_end;
+	u32 band;
+	s32 power;
+	u32 i, idx;
+
+	if (sar->type != NL80211_SAR_TYPE_POWER)
+		return -EINVAL;
+
+	fct = rtw89_sar_handlers[RTW89_SAR_SOURCE_COMMON].txpwr_factor_sar;
+
+	for (i = 0; i < sar->num_sub_specs; i++) {
+		idx = sar->sub_specs[i].freq_range_index;
+		if (idx >= ARRAY_SIZE(rtw89_common_sar_freq_ranges))
+			return -EINVAL;
+
+		freq_start = rtw89_common_sar_freq_ranges[idx].start_freq;
+		freq_end = rtw89_common_sar_freq_ranges[idx].end_freq;
+		band = rtw89_common_sar_subband_map[idx];
+		power = sar->sub_specs[i].power;
+
+		rtw89_info(rtwdev, "On freq %u to %u, ", freq_start, freq_end);
+		rtw89_info(rtwdev, "set SAR power limit %d (unit: 1/%lu dBm)\n",
+			   power, BIT(fct));
+
+		sar_common.set[band] = true;
+		sar_common.cfg[band] = power;
+	}
+
+	return rtw89_apply_sar_common(rtwdev, &sar_common);
+}