From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- .../wireless/broadcom/brcm80211/brcmutil/utils.c | 327 +++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c') diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c b/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c new file mode 100644 index 000000000..e87e68cc4 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/utils.c @@ -0,0 +1,327 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (c) 2010 Broadcom Corporation + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include + +#include + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN driver utilities."); +MODULE_LICENSE("Dual BSD/GPL"); + +struct sk_buff *brcmu_pkt_buf_get_skb(uint len) +{ + struct sk_buff *skb; + + skb = dev_alloc_skb(len); + if (skb) { + skb_put(skb, len); + skb->priority = 0; + } + + return skb; +} +EXPORT_SYMBOL(brcmu_pkt_buf_get_skb); + +/* Free the driver packet. Free the tag if present */ +void brcmu_pkt_buf_free_skb(struct sk_buff *skb) +{ + if (!skb) + return; + + WARN_ON(skb->next); + dev_kfree_skb_any(skb); +} +EXPORT_SYMBOL(brcmu_pkt_buf_free_skb); + +/* + * osl multiple-precedence packet queue + * hi_prec is always >= the number of the highest non-empty precedence + */ +struct sk_buff *brcmu_pktq_penq(struct pktq *pq, int prec, + struct sk_buff *p) +{ + struct sk_buff_head *q; + + if (pktq_full(pq) || pktq_pfull(pq, prec)) + return NULL; + + q = &pq->q[prec].skblist; + skb_queue_tail(q, p); + pq->len++; + + if (pq->hi_prec < prec) + pq->hi_prec = (u8) prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_penq); + +struct sk_buff *brcmu_pktq_penq_head(struct pktq *pq, int prec, + struct sk_buff *p) +{ + struct sk_buff_head *q; + + if (pktq_full(pq) || pktq_pfull(pq, prec)) + return NULL; + + q = &pq->q[prec].skblist; + skb_queue_head(q, p); + pq->len++; + + if (pq->hi_prec < prec) + pq->hi_prec = (u8) prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_penq_head); + +struct sk_buff *brcmu_pktq_pdeq(struct pktq *pq, int prec) +{ + struct sk_buff_head *q; + struct sk_buff *p; + + q = &pq->q[prec].skblist; + p = skb_dequeue(q); + if (p == NULL) + return NULL; + + pq->len--; + return p; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq); + +/* + * precedence based dequeue with match function. Passing a NULL pointer + * for the match function parameter is considered to be a wildcard so + * any packet on the queue is returned. In that case it is no different + * from brcmu_pktq_pdeq() above. + */ +struct sk_buff *brcmu_pktq_pdeq_match(struct pktq *pq, int prec, + bool (*match_fn)(struct sk_buff *skb, + void *arg), void *arg) +{ + struct sk_buff_head *q; + struct sk_buff *p, *next; + + q = &pq->q[prec].skblist; + skb_queue_walk_safe(q, p, next) { + if (match_fn == NULL || match_fn(p, arg)) { + skb_unlink(p, q); + pq->len--; + return p; + } + } + return NULL; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq_match); + +struct sk_buff *brcmu_pktq_pdeq_tail(struct pktq *pq, int prec) +{ + struct sk_buff_head *q; + struct sk_buff *p; + + q = &pq->q[prec].skblist; + p = skb_dequeue_tail(q); + if (p == NULL) + return NULL; + + pq->len--; + return p; +} +EXPORT_SYMBOL(brcmu_pktq_pdeq_tail); + +void +brcmu_pktq_pflush(struct pktq *pq, int prec, bool dir, + bool (*fn)(struct sk_buff *, void *), void *arg) +{ + struct sk_buff_head *q; + struct sk_buff *p, *next; + + q = &pq->q[prec].skblist; + skb_queue_walk_safe(q, p, next) { + if (fn == NULL || (*fn) (p, arg)) { + skb_unlink(p, q); + brcmu_pkt_buf_free_skb(p); + pq->len--; + } + } +} +EXPORT_SYMBOL(brcmu_pktq_pflush); + +void brcmu_pktq_flush(struct pktq *pq, bool dir, + bool (*fn)(struct sk_buff *, void *), void *arg) +{ + int prec; + for (prec = 0; prec < pq->num_prec; prec++) + brcmu_pktq_pflush(pq, prec, dir, fn, arg); +} +EXPORT_SYMBOL(brcmu_pktq_flush); + +void brcmu_pktq_init(struct pktq *pq, int num_prec, int max_len) +{ + int prec; + + /* pq is variable size; only zero out what's requested */ + memset(pq, 0, + offsetof(struct pktq, q) + (sizeof(struct pktq_prec) * num_prec)); + + pq->num_prec = (u16) num_prec; + + pq->max = (u16) max_len; + + for (prec = 0; prec < num_prec; prec++) { + pq->q[prec].max = pq->max; + skb_queue_head_init(&pq->q[prec].skblist); + } +} +EXPORT_SYMBOL(brcmu_pktq_init); + +struct sk_buff *brcmu_pktq_peek_tail(struct pktq *pq, int *prec_out) +{ + int prec; + + if (pq->len == 0) + return NULL; + + for (prec = 0; prec < pq->hi_prec; prec++) + if (!skb_queue_empty(&pq->q[prec].skblist)) + break; + + if (prec_out) + *prec_out = prec; + + return skb_peek_tail(&pq->q[prec].skblist); +} +EXPORT_SYMBOL(brcmu_pktq_peek_tail); + +/* Return sum of lengths of a specific set of precedences */ +int brcmu_pktq_mlen(struct pktq *pq, uint prec_bmp) +{ + int prec, len; + + len = 0; + + for (prec = 0; prec <= pq->hi_prec; prec++) + if (prec_bmp & (1 << prec)) + len += pq->q[prec].skblist.qlen; + + return len; +} +EXPORT_SYMBOL(brcmu_pktq_mlen); + +/* Priority dequeue from a specific set of precedences */ +struct sk_buff *brcmu_pktq_mdeq(struct pktq *pq, uint prec_bmp, + int *prec_out) +{ + struct sk_buff_head *q; + struct sk_buff *p; + int prec; + + if (pq->len == 0) + return NULL; + + while ((prec = pq->hi_prec) > 0 && + skb_queue_empty(&pq->q[prec].skblist)) + pq->hi_prec--; + + while ((prec_bmp & (1 << prec)) == 0 || + skb_queue_empty(&pq->q[prec].skblist)) + if (prec-- == 0) + return NULL; + + q = &pq->q[prec].skblist; + p = skb_dequeue(q); + if (p == NULL) + return NULL; + + pq->len--; + + if (prec_out) + *prec_out = prec; + + return p; +} +EXPORT_SYMBOL(brcmu_pktq_mdeq); + +/* Produce a human-readable string for boardrev */ +char *brcmu_boardrev_str(u32 brev, char *buf) +{ + char c; + + if (brev < 0x100) { + snprintf(buf, BRCMU_BOARDREV_LEN, "%d.%d", + (brev & 0xf0) >> 4, brev & 0xf); + } else { + c = (brev & 0xf000) == 0x1000 ? 'P' : 'A'; + snprintf(buf, BRCMU_BOARDREV_LEN, "%c%03x", c, brev & 0xfff); + } + return buf; +} +EXPORT_SYMBOL(brcmu_boardrev_str); + +char *brcmu_dotrev_str(u32 dotrev, char *buf) +{ + u8 dotval[4]; + + if (!dotrev) { + snprintf(buf, BRCMU_DOTREV_LEN, "unknown"); + return buf; + } + dotval[0] = (dotrev >> 24) & 0xFF; + dotval[1] = (dotrev >> 16) & 0xFF; + dotval[2] = (dotrev >> 8) & 0xFF; + dotval[3] = dotrev & 0xFF; + + if (dotval[3]) + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d.%d.%d", dotval[0], + dotval[1], dotval[2], dotval[3]); + else if (dotval[2]) + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d.%d", dotval[0], + dotval[1], dotval[2]); + else + snprintf(buf, BRCMU_DOTREV_LEN, "%d.%d", dotval[0], + dotval[1]); + + return buf; +} +EXPORT_SYMBOL(brcmu_dotrev_str); + +#if defined(DEBUG) +/* pretty hex print a pkt buffer chain */ +void brcmu_prpkt(const char *msg, struct sk_buff *p0) +{ + struct sk_buff *p; + + if (msg && (msg[0] != '\0')) + pr_debug("%s:\n", msg); + + for (p = p0; p; p = p->next) + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, p->data, p->len); +} +EXPORT_SYMBOL(brcmu_prpkt); + +void brcmu_dbg_hex_dump(const void *data, size_t size, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + pr_debug("%pV", &vaf); + + va_end(args); + + print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, data, size); +} +EXPORT_SYMBOL(brcmu_dbg_hex_dump); + +#endif /* defined(DEBUG) */ -- cgit v1.2.3