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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/net/ethernet/netronome/nfp/abm/main.h | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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().
...
Diffstat (limited to '')
-rw-r--r-- | drivers/net/ethernet/netronome/nfp/abm/main.h | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/abm/main.h b/drivers/net/ethernet/netronome/nfp/abm/main.h new file mode 100644 index 000000000..48746c9c6 --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/abm/main.h @@ -0,0 +1,273 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Copyright (C) 2018 Netronome Systems, Inc. */ + +#ifndef __NFP_ABM_H__ +#define __NFP_ABM_H__ 1 + +#include <linux/bits.h> +#include <linux/list.h> +#include <linux/radix-tree.h> +#include <net/devlink.h> +#include <net/pkt_cls.h> +#include <net/pkt_sched.h> + +/* Dump of 64 PRIOs and 256 REDs seems to take 850us on Xeon v4 @ 2.20GHz; + * 2.5ms / 400Hz seems more than sufficient for stats resolution. + */ +#define NFP_ABM_STATS_REFRESH_IVAL (2500 * 1000) /* ns */ + +#define NFP_ABM_LVL_INFINITY S32_MAX + +struct nfp_app; +struct nfp_net; + +#define NFP_ABM_PORTID_TYPE GENMASK(23, 16) +#define NFP_ABM_PORTID_ID GENMASK(7, 0) + +/* The possible actions if thresholds are exceeded */ +enum nfp_abm_q_action { + /* mark if ECN capable, otherwise drop */ + NFP_ABM_ACT_MARK_DROP = 0, + /* mark if ECN capable, otherwise goto QM */ + NFP_ABM_ACT_MARK_QUEUE = 1, + NFP_ABM_ACT_DROP = 2, + NFP_ABM_ACT_QUEUE = 3, + NFP_ABM_ACT_NOQUEUE = 4, +}; + +/** + * struct nfp_abm - ABM NIC app structure + * @app: back pointer to nfp_app + * @pf_id: ID of our PF link + * + * @red_support: is RED offload supported + * @num_prios: number of supported DSCP priorities + * @num_bands: number of supported DSCP priority bands + * @action_mask: bitmask of supported actions + * + * @thresholds: current threshold configuration + * @threshold_undef: bitmap of thresholds which have not been set + * @actions: current FW action configuration + * @num_thresholds: number of @thresholds and bits in @threshold_undef + * + * @prio_map_len: computed length of FW priority map (in bytes) + * @dscp_mask: mask FW will apply on DSCP field + * + * @eswitch_mode: devlink eswitch mode, advanced functions only visible + * in switchdev mode + * + * @q_lvls: queue level control area + * @qm_stats: queue statistics symbol + * @q_stats: basic queue statistics (only in per-band case) + */ +struct nfp_abm { + struct nfp_app *app; + unsigned int pf_id; + + unsigned int red_support; + unsigned int num_prios; + unsigned int num_bands; + unsigned int action_mask; + + u32 *thresholds; + unsigned long *threshold_undef; + u8 *actions; + size_t num_thresholds; + + unsigned int prio_map_len; + u8 dscp_mask; + + enum devlink_eswitch_mode eswitch_mode; + + const struct nfp_rtsym *q_lvls; + const struct nfp_rtsym *qm_stats; + const struct nfp_rtsym *q_stats; +}; + +/** + * struct nfp_alink_stats - ABM NIC statistics + * @tx_pkts: number of TXed packets + * @tx_bytes: number of TXed bytes + * @backlog_pkts: momentary backlog length (packets) + * @backlog_bytes: momentary backlog length (bytes) + * @overlimits: number of ECN marked TXed packets (accumulative) + * @drops: number of tail-dropped packets (accumulative) + */ +struct nfp_alink_stats { + u64 tx_pkts; + u64 tx_bytes; + u64 backlog_pkts; + u64 backlog_bytes; + u64 overlimits; + u64 drops; +}; + +/** + * struct nfp_alink_xstats - extended ABM NIC statistics + * @ecn_marked: number of ECN marked TXed packets + * @pdrop: number of hard drops due to queue limit + */ +struct nfp_alink_xstats { + u64 ecn_marked; + u64 pdrop; +}; + +enum nfp_qdisc_type { + NFP_QDISC_NONE = 0, + NFP_QDISC_MQ, + NFP_QDISC_RED, + NFP_QDISC_GRED, +}; + +#define NFP_QDISC_UNTRACKED ((struct nfp_qdisc *)1UL) + +/** + * struct nfp_qdisc - tracked TC Qdisc + * @netdev: netdev on which Qdisc was created + * @type: Qdisc type + * @handle: handle of this Qdisc + * @parent_handle: handle of the parent (unreliable if Qdisc was grafted) + * @use_cnt: number of attachment points in the hierarchy + * @num_children: current size of the @children array + * @children: pointers to children + * + * @params_ok: parameters of this Qdisc are OK for offload + * @offload_mark: offload refresh state - selected for offload + * @offloaded: Qdisc is currently offloaded to the HW + * + * @mq: MQ Qdisc specific parameters and state + * @mq.stats: current stats of the MQ Qdisc + * @mq.prev_stats: previously reported @mq.stats + * + * @red: RED Qdisc specific parameters and state + * @red.num_bands: Number of valid entries in the @red.band table + * @red.band: Per-band array of RED instances + * @red.band.ecn: ECN marking is enabled (rather than drop) + * @red.band.threshold: ECN marking threshold + * @red.band.stats: current stats of the RED Qdisc + * @red.band.prev_stats: previously reported @red.stats + * @red.band.xstats: extended stats for RED - current + * @red.band.prev_xstats: extended stats for RED - previously reported + */ +struct nfp_qdisc { + struct net_device *netdev; + enum nfp_qdisc_type type; + u32 handle; + u32 parent_handle; + unsigned int use_cnt; + unsigned int num_children; + struct nfp_qdisc **children; + + bool params_ok; + bool offload_mark; + bool offloaded; + + union { + /* NFP_QDISC_MQ */ + struct { + struct nfp_alink_stats stats; + struct nfp_alink_stats prev_stats; + } mq; + /* TC_SETUP_QDISC_RED, TC_SETUP_QDISC_GRED */ + struct { + unsigned int num_bands; + + struct { + bool ecn; + u32 threshold; + struct nfp_alink_stats stats; + struct nfp_alink_stats prev_stats; + struct nfp_alink_xstats xstats; + struct nfp_alink_xstats prev_xstats; + } band[MAX_DPs]; + } red; + }; +}; + +/** + * struct nfp_abm_link - port tuple of a ABM NIC + * @abm: back pointer to nfp_abm + * @vnic: data vNIC + * @id: id of the data vNIC + * @queue_base: id of base to host queue within PCIe (not QC idx) + * @total_queues: number of PF queues + * + * @last_stats_update: ktime of last stats update + * + * @prio_map: current map of priorities + * @has_prio: @prio_map is valid + * + * @def_band: default band to use + * @dscp_map: list of DSCP to band mappings + * + * @root_qdisc: pointer to the current root of the Qdisc hierarchy + * @qdiscs: all qdiscs recorded by major part of the handle + */ +struct nfp_abm_link { + struct nfp_abm *abm; + struct nfp_net *vnic; + unsigned int id; + unsigned int queue_base; + unsigned int total_queues; + + u64 last_stats_update; + + u32 *prio_map; + bool has_prio; + + u8 def_band; + struct list_head dscp_map; + + struct nfp_qdisc *root_qdisc; + struct radix_tree_root qdiscs; +}; + +static inline bool nfp_abm_has_prio(struct nfp_abm *abm) +{ + return abm->num_bands > 1; +} + +static inline bool nfp_abm_has_drop(struct nfp_abm *abm) +{ + return abm->action_mask & BIT(NFP_ABM_ACT_DROP); +} + +static inline bool nfp_abm_has_mark(struct nfp_abm *abm) +{ + return abm->action_mask & BIT(NFP_ABM_ACT_MARK_DROP); +} + +void nfp_abm_qdisc_offload_update(struct nfp_abm_link *alink); +int nfp_abm_setup_root(struct net_device *netdev, struct nfp_abm_link *alink, + struct tc_root_qopt_offload *opt); +int nfp_abm_setup_tc_red(struct net_device *netdev, struct nfp_abm_link *alink, + struct tc_red_qopt_offload *opt); +int nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink, + struct tc_mq_qopt_offload *opt); +int nfp_abm_setup_tc_gred(struct net_device *netdev, struct nfp_abm_link *alink, + struct tc_gred_qopt_offload *opt); +int nfp_abm_setup_cls_block(struct net_device *netdev, struct nfp_repr *repr, + struct flow_block_offload *opt); + +int nfp_abm_ctrl_read_params(struct nfp_abm_link *alink); +int nfp_abm_ctrl_find_addrs(struct nfp_abm *abm); +int __nfp_abm_ctrl_set_q_lvl(struct nfp_abm *abm, unsigned int id, u32 val); +int nfp_abm_ctrl_set_q_lvl(struct nfp_abm_link *alink, unsigned int band, + unsigned int queue, u32 val); +int __nfp_abm_ctrl_set_q_act(struct nfp_abm *abm, unsigned int id, + enum nfp_abm_q_action act); +int nfp_abm_ctrl_set_q_act(struct nfp_abm_link *alink, unsigned int band, + unsigned int queue, enum nfp_abm_q_action act); +int nfp_abm_ctrl_read_q_stats(struct nfp_abm_link *alink, + unsigned int band, unsigned int queue, + struct nfp_alink_stats *stats); +int nfp_abm_ctrl_read_q_xstats(struct nfp_abm_link *alink, + unsigned int band, unsigned int queue, + struct nfp_alink_xstats *xstats); +u64 nfp_abm_ctrl_stat_non_sto(struct nfp_abm_link *alink, unsigned int i); +u64 nfp_abm_ctrl_stat_sto(struct nfp_abm_link *alink, unsigned int i); +int nfp_abm_ctrl_qm_enable(struct nfp_abm *abm); +int nfp_abm_ctrl_qm_disable(struct nfp_abm *abm); +void nfp_abm_prio_map_update(struct nfp_abm *abm); +int nfp_abm_ctrl_prio_map_update(struct nfp_abm_link *alink, u32 *packed); +#endif |