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(). ... --- net/core/selftests.c | 412 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 412 insertions(+) create mode 100644 net/core/selftests.c (limited to 'net/core/selftests.c') diff --git a/net/core/selftests.c b/net/core/selftests.c new file mode 100644 index 000000000..acb1ee97b --- /dev/null +++ b/net/core/selftests.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 Synopsys, Inc. and/or its affiliates. + * stmmac Selftests Support + * + * Author: Jose Abreu + * + * Ported from stmmac by: + * Copyright (C) 2021 Oleksij Rempel + */ + +#include +#include +#include +#include + +struct net_packet_attrs { + const unsigned char *src; + const unsigned char *dst; + u32 ip_src; + u32 ip_dst; + bool tcp; + u16 sport; + u16 dport; + int timeout; + int size; + int max_size; + u8 id; + u16 queue_mapping; +}; + +struct net_test_priv { + struct net_packet_attrs *packet; + struct packet_type pt; + struct completion comp; + int double_vlan; + int vlan_id; + int ok; +}; + +struct netsfhdr { + __be32 version; + __be64 magic; + u8 id; +} __packed; + +static u8 net_test_next_id; + +#define NET_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \ + sizeof(struct netsfhdr)) +#define NET_TEST_PKT_MAGIC 0xdeadcafecafedeadULL +#define NET_LB_TIMEOUT msecs_to_jiffies(200) + +static struct sk_buff *net_test_get_skb(struct net_device *ndev, + struct net_packet_attrs *attr) +{ + struct sk_buff *skb = NULL; + struct udphdr *uhdr = NULL; + struct tcphdr *thdr = NULL; + struct netsfhdr *shdr; + struct ethhdr *ehdr; + struct iphdr *ihdr; + int iplen, size; + + size = attr->size + NET_TEST_PKT_SIZE; + + if (attr->tcp) + size += sizeof(struct tcphdr); + else + size += sizeof(struct udphdr); + + if (attr->max_size && attr->max_size > size) + size = attr->max_size; + + skb = netdev_alloc_skb(ndev, size); + if (!skb) + return NULL; + + prefetchw(skb->data); + + ehdr = skb_push(skb, ETH_HLEN); + skb_reset_mac_header(skb); + + skb_set_network_header(skb, skb->len); + ihdr = skb_put(skb, sizeof(*ihdr)); + + skb_set_transport_header(skb, skb->len); + if (attr->tcp) + thdr = skb_put(skb, sizeof(*thdr)); + else + uhdr = skb_put(skb, sizeof(*uhdr)); + + eth_zero_addr(ehdr->h_dest); + + if (attr->src) + ether_addr_copy(ehdr->h_source, attr->src); + if (attr->dst) + ether_addr_copy(ehdr->h_dest, attr->dst); + + ehdr->h_proto = htons(ETH_P_IP); + + if (attr->tcp) { + thdr->source = htons(attr->sport); + thdr->dest = htons(attr->dport); + thdr->doff = sizeof(struct tcphdr) / 4; + thdr->check = 0; + } else { + uhdr->source = htons(attr->sport); + uhdr->dest = htons(attr->dport); + uhdr->len = htons(sizeof(*shdr) + sizeof(*uhdr) + attr->size); + if (attr->max_size) + uhdr->len = htons(attr->max_size - + (sizeof(*ihdr) + sizeof(*ehdr))); + uhdr->check = 0; + } + + ihdr->ihl = 5; + ihdr->ttl = 32; + ihdr->version = 4; + if (attr->tcp) + ihdr->protocol = IPPROTO_TCP; + else + ihdr->protocol = IPPROTO_UDP; + iplen = sizeof(*ihdr) + sizeof(*shdr) + attr->size; + if (attr->tcp) + iplen += sizeof(*thdr); + else + iplen += sizeof(*uhdr); + + if (attr->max_size) + iplen = attr->max_size - sizeof(*ehdr); + + ihdr->tot_len = htons(iplen); + ihdr->frag_off = 0; + ihdr->saddr = htonl(attr->ip_src); + ihdr->daddr = htonl(attr->ip_dst); + ihdr->tos = 0; + ihdr->id = 0; + ip_send_check(ihdr); + + shdr = skb_put(skb, sizeof(*shdr)); + shdr->version = 0; + shdr->magic = cpu_to_be64(NET_TEST_PKT_MAGIC); + attr->id = net_test_next_id; + shdr->id = net_test_next_id++; + + if (attr->size) + skb_put(skb, attr->size); + if (attr->max_size && attr->max_size > skb->len) + skb_put(skb, attr->max_size - skb->len); + + skb->csum = 0; + skb->ip_summed = CHECKSUM_PARTIAL; + if (attr->tcp) { + thdr->check = ~tcp_v4_check(skb->len, ihdr->saddr, + ihdr->daddr, 0); + skb->csum_start = skb_transport_header(skb) - skb->head; + skb->csum_offset = offsetof(struct tcphdr, check); + } else { + udp4_hwcsum(skb, ihdr->saddr, ihdr->daddr); + } + + skb->protocol = htons(ETH_P_IP); + skb->pkt_type = PACKET_HOST; + skb->dev = ndev; + + return skb; +} + +static int net_test_loopback_validate(struct sk_buff *skb, + struct net_device *ndev, + struct packet_type *pt, + struct net_device *orig_ndev) +{ + struct net_test_priv *tpriv = pt->af_packet_priv; + const unsigned char *src = tpriv->packet->src; + const unsigned char *dst = tpriv->packet->dst; + struct netsfhdr *shdr; + struct ethhdr *ehdr; + struct udphdr *uhdr; + struct tcphdr *thdr; + struct iphdr *ihdr; + + skb = skb_unshare(skb, GFP_ATOMIC); + if (!skb) + goto out; + + if (skb_linearize(skb)) + goto out; + if (skb_headlen(skb) < (NET_TEST_PKT_SIZE - ETH_HLEN)) + goto out; + + ehdr = (struct ethhdr *)skb_mac_header(skb); + if (dst) { + if (!ether_addr_equal_unaligned(ehdr->h_dest, dst)) + goto out; + } + + if (src) { + if (!ether_addr_equal_unaligned(ehdr->h_source, src)) + goto out; + } + + ihdr = ip_hdr(skb); + if (tpriv->double_vlan) + ihdr = (struct iphdr *)(skb_network_header(skb) + 4); + + if (tpriv->packet->tcp) { + if (ihdr->protocol != IPPROTO_TCP) + goto out; + + thdr = (struct tcphdr *)((u8 *)ihdr + 4 * ihdr->ihl); + if (thdr->dest != htons(tpriv->packet->dport)) + goto out; + + shdr = (struct netsfhdr *)((u8 *)thdr + sizeof(*thdr)); + } else { + if (ihdr->protocol != IPPROTO_UDP) + goto out; + + uhdr = (struct udphdr *)((u8 *)ihdr + 4 * ihdr->ihl); + if (uhdr->dest != htons(tpriv->packet->dport)) + goto out; + + shdr = (struct netsfhdr *)((u8 *)uhdr + sizeof(*uhdr)); + } + + if (shdr->magic != cpu_to_be64(NET_TEST_PKT_MAGIC)) + goto out; + if (tpriv->packet->id != shdr->id) + goto out; + + tpriv->ok = true; + complete(&tpriv->comp); +out: + kfree_skb(skb); + return 0; +} + +static int __net_test_loopback(struct net_device *ndev, + struct net_packet_attrs *attr) +{ + struct net_test_priv *tpriv; + struct sk_buff *skb = NULL; + int ret = 0; + + tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL); + if (!tpriv) + return -ENOMEM; + + tpriv->ok = false; + init_completion(&tpriv->comp); + + tpriv->pt.type = htons(ETH_P_IP); + tpriv->pt.func = net_test_loopback_validate; + tpriv->pt.dev = ndev; + tpriv->pt.af_packet_priv = tpriv; + tpriv->packet = attr; + dev_add_pack(&tpriv->pt); + + skb = net_test_get_skb(ndev, attr); + if (!skb) { + ret = -ENOMEM; + goto cleanup; + } + + ret = dev_direct_xmit(skb, attr->queue_mapping); + if (ret < 0) { + goto cleanup; + } else if (ret > 0) { + ret = -ENETUNREACH; + goto cleanup; + } + + if (!attr->timeout) + attr->timeout = NET_LB_TIMEOUT; + + wait_for_completion_timeout(&tpriv->comp, attr->timeout); + ret = tpriv->ok ? 0 : -ETIMEDOUT; + +cleanup: + dev_remove_pack(&tpriv->pt); + kfree(tpriv); + return ret; +} + +static int net_test_netif_carrier(struct net_device *ndev) +{ + return netif_carrier_ok(ndev) ? 0 : -ENOLINK; +} + +static int net_test_phy_phydev(struct net_device *ndev) +{ + return ndev->phydev ? 0 : -EOPNOTSUPP; +} + +static int net_test_phy_loopback_enable(struct net_device *ndev) +{ + if (!ndev->phydev) + return -EOPNOTSUPP; + + return phy_loopback(ndev->phydev, true); +} + +static int net_test_phy_loopback_disable(struct net_device *ndev) +{ + if (!ndev->phydev) + return -EOPNOTSUPP; + + return phy_loopback(ndev->phydev, false); +} + +static int net_test_phy_loopback_udp(struct net_device *ndev) +{ + struct net_packet_attrs attr = { }; + + attr.dst = ndev->dev_addr; + return __net_test_loopback(ndev, &attr); +} + +static int net_test_phy_loopback_udp_mtu(struct net_device *ndev) +{ + struct net_packet_attrs attr = { }; + + attr.dst = ndev->dev_addr; + attr.max_size = ndev->mtu; + return __net_test_loopback(ndev, &attr); +} + +static int net_test_phy_loopback_tcp(struct net_device *ndev) +{ + struct net_packet_attrs attr = { }; + + attr.dst = ndev->dev_addr; + attr.tcp = true; + return __net_test_loopback(ndev, &attr); +} + +static const struct net_test { + char name[ETH_GSTRING_LEN]; + int (*fn)(struct net_device *ndev); +} net_selftests[] = { + { + .name = "Carrier ", + .fn = net_test_netif_carrier, + }, { + .name = "PHY dev is present ", + .fn = net_test_phy_phydev, + }, { + /* This test should be done before all PHY loopback test */ + .name = "PHY internal loopback, enable ", + .fn = net_test_phy_loopback_enable, + }, { + .name = "PHY internal loopback, UDP ", + .fn = net_test_phy_loopback_udp, + }, { + .name = "PHY internal loopback, MTU ", + .fn = net_test_phy_loopback_udp_mtu, + }, { + .name = "PHY internal loopback, TCP ", + .fn = net_test_phy_loopback_tcp, + }, { + /* This test should be done after all PHY loopback test */ + .name = "PHY internal loopback, disable", + .fn = net_test_phy_loopback_disable, + }, +}; + +void net_selftest(struct net_device *ndev, struct ethtool_test *etest, u64 *buf) +{ + int count = net_selftest_get_count(); + int i; + + memset(buf, 0, sizeof(*buf) * count); + net_test_next_id = 0; + + if (etest->flags != ETH_TEST_FL_OFFLINE) { + netdev_err(ndev, "Only offline tests are supported\n"); + etest->flags |= ETH_TEST_FL_FAILED; + return; + } + + + for (i = 0; i < count; i++) { + buf[i] = net_selftests[i].fn(ndev); + if (buf[i] && (buf[i] != -EOPNOTSUPP)) + etest->flags |= ETH_TEST_FL_FAILED; + } +} +EXPORT_SYMBOL_GPL(net_selftest); + +int net_selftest_get_count(void) +{ + return ARRAY_SIZE(net_selftests); +} +EXPORT_SYMBOL_GPL(net_selftest_get_count); + +void net_selftest_get_strings(u8 *data) +{ + u8 *p = data; + int i; + + for (i = 0; i < net_selftest_get_count(); i++) { + snprintf(p, ETH_GSTRING_LEN, "%2d. %s", i + 1, + net_selftests[i].name); + p += ETH_GSTRING_LEN; + } +} +EXPORT_SYMBOL_GPL(net_selftest_get_strings); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Oleksij Rempel "); -- cgit v1.2.3