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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/microchip/sparx5/sparx5_psfp.c | |
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 'drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c')
-rw-r--r-- | drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c new file mode 100644 index 000000000..8dee1ab1f --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries. + */ + +#include "sparx5_main_regs.h" +#include "sparx5_main.h" + +#define SPX5_PSFP_SF_CNT 1024 +#define SPX5_PSFP_SG_CONFIG_CHANGE_SLEEP 1000 +#define SPX5_PSFP_SG_CONFIG_CHANGE_TIMEO 100000 + +/* Pool of available service policers */ +static struct sparx5_pool_entry sparx5_psfp_fm_pool[SPX5_SDLB_CNT]; + +/* Pool of available stream gates */ +static struct sparx5_pool_entry sparx5_psfp_sg_pool[SPX5_PSFP_SG_CNT]; + +/* Pool of available stream filters */ +static struct sparx5_pool_entry sparx5_psfp_sf_pool[SPX5_PSFP_SF_CNT]; + +static int sparx5_psfp_sf_get(u32 *id) +{ + return sparx5_pool_get(sparx5_psfp_sf_pool, SPX5_PSFP_SF_CNT, id); +} + +static int sparx5_psfp_sf_put(u32 id) +{ + return sparx5_pool_put(sparx5_psfp_sf_pool, SPX5_PSFP_SF_CNT, id); +} + +static int sparx5_psfp_sg_get(u32 idx, u32 *id) +{ + return sparx5_pool_get_with_idx(sparx5_psfp_sg_pool, SPX5_PSFP_SG_CNT, + idx, id); +} + +static int sparx5_psfp_sg_put(u32 id) +{ + return sparx5_pool_put(sparx5_psfp_sg_pool, SPX5_PSFP_SG_CNT, id); +} + +static int sparx5_psfp_fm_get(u32 idx, u32 *id) +{ + return sparx5_pool_get_with_idx(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, idx, + id); +} + +static int sparx5_psfp_fm_put(u32 id) +{ + return sparx5_pool_put(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, id); +} + +u32 sparx5_psfp_isdx_get_sf(struct sparx5 *sparx5, u32 isdx) +{ + return ANA_L2_TSN_CFG_TSN_SFID_GET(spx5_rd(sparx5, + ANA_L2_TSN_CFG(isdx))); +} + +u32 sparx5_psfp_isdx_get_fm(struct sparx5 *sparx5, u32 isdx) +{ + return ANA_L2_DLB_CFG_DLB_IDX_GET(spx5_rd(sparx5, + ANA_L2_DLB_CFG(isdx))); +} + +u32 sparx5_psfp_sf_get_sg(struct sparx5 *sparx5, u32 sfid) +{ + return ANA_AC_TSN_SF_CFG_TSN_SGID_GET(spx5_rd(sparx5, + ANA_AC_TSN_SF_CFG(sfid))); +} + +void sparx5_isdx_conf_set(struct sparx5 *sparx5, u32 isdx, u32 sfid, u32 fmid) +{ + spx5_rmw(ANA_L2_TSN_CFG_TSN_SFID_SET(sfid), ANA_L2_TSN_CFG_TSN_SFID, + sparx5, ANA_L2_TSN_CFG(isdx)); + + spx5_rmw(ANA_L2_DLB_CFG_DLB_IDX_SET(fmid), ANA_L2_DLB_CFG_DLB_IDX, + sparx5, ANA_L2_DLB_CFG(isdx)); +} + +/* Internal priority value to internal priority selector */ +static u32 sparx5_psfp_ipv_to_ips(s32 ipv) +{ + return ipv > 0 ? (ipv | BIT(3)) : 0; +} + +static int sparx5_psfp_sgid_get_status(struct sparx5 *sparx5) +{ + return spx5_rd(sparx5, ANA_AC_SG_ACCESS_CTRL); +} + +static int sparx5_psfp_sgid_wait_for_completion(struct sparx5 *sparx5) +{ + u32 val; + + return readx_poll_timeout(sparx5_psfp_sgid_get_status, sparx5, val, + !ANA_AC_SG_ACCESS_CTRL_CONFIG_CHANGE_GET(val), + SPX5_PSFP_SG_CONFIG_CHANGE_SLEEP, + SPX5_PSFP_SG_CONFIG_CHANGE_TIMEO); +} + +static void sparx5_psfp_sg_config_change(struct sparx5 *sparx5, u32 id) +{ + spx5_wr(ANA_AC_SG_ACCESS_CTRL_SGID_SET(id), sparx5, + ANA_AC_SG_ACCESS_CTRL); + + spx5_wr(ANA_AC_SG_ACCESS_CTRL_CONFIG_CHANGE_SET(1) | + ANA_AC_SG_ACCESS_CTRL_SGID_SET(id), + sparx5, ANA_AC_SG_ACCESS_CTRL); + + if (sparx5_psfp_sgid_wait_for_completion(sparx5) < 0) + pr_debug("%s:%d timed out waiting for sgid completion", + __func__, __LINE__); +} + +static void sparx5_psfp_sf_set(struct sparx5 *sparx5, u32 id, + const struct sparx5_psfp_sf *sf) +{ + /* Configure stream gate*/ + spx5_rmw(ANA_AC_TSN_SF_CFG_TSN_SGID_SET(sf->sgid) | + ANA_AC_TSN_SF_CFG_TSN_MAX_SDU_SET(sf->max_sdu) | + ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_STATE_SET(sf->sblock_osize) | + ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_ENA_SET(sf->sblock_osize_ena), + ANA_AC_TSN_SF_CFG_TSN_SGID | ANA_AC_TSN_SF_CFG_TSN_MAX_SDU | + ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_STATE | + ANA_AC_TSN_SF_CFG_BLOCK_OVERSIZE_ENA, + sparx5, ANA_AC_TSN_SF_CFG(id)); +} + +static int sparx5_psfp_sg_set(struct sparx5 *sparx5, u32 id, + const struct sparx5_psfp_sg *sg) +{ + u32 ips, base_lsb, base_msb, accum_time_interval = 0; + const struct sparx5_psfp_gce *gce; + int i; + + ips = sparx5_psfp_ipv_to_ips(sg->ipv); + base_lsb = sg->basetime.tv_sec & 0xffffffff; + base_msb = sg->basetime.tv_sec >> 32; + + /* Set stream gate id */ + spx5_wr(ANA_AC_SG_ACCESS_CTRL_SGID_SET(id), sparx5, + ANA_AC_SG_ACCESS_CTRL); + + /* Write AdminPSFP values */ + spx5_wr(sg->basetime.tv_nsec, sparx5, ANA_AC_SG_CONFIG_REG_1); + spx5_wr(base_lsb, sparx5, ANA_AC_SG_CONFIG_REG_2); + + spx5_rmw(ANA_AC_SG_CONFIG_REG_3_BASE_TIME_SEC_MSB_SET(base_msb) | + ANA_AC_SG_CONFIG_REG_3_INIT_IPS_SET(ips) | + ANA_AC_SG_CONFIG_REG_3_LIST_LENGTH_SET(sg->num_entries) | + ANA_AC_SG_CONFIG_REG_3_INIT_GATE_STATE_SET(sg->gate_state) | + ANA_AC_SG_CONFIG_REG_3_GATE_ENABLE_SET(1), + ANA_AC_SG_CONFIG_REG_3_BASE_TIME_SEC_MSB | + ANA_AC_SG_CONFIG_REG_3_INIT_IPS | + ANA_AC_SG_CONFIG_REG_3_LIST_LENGTH | + ANA_AC_SG_CONFIG_REG_3_INIT_GATE_STATE | + ANA_AC_SG_CONFIG_REG_3_GATE_ENABLE, + sparx5, ANA_AC_SG_CONFIG_REG_3); + + spx5_wr(sg->cycletime, sparx5, ANA_AC_SG_CONFIG_REG_4); + spx5_wr(sg->cycletimeext, sparx5, ANA_AC_SG_CONFIG_REG_5); + + /* For each scheduling entry */ + for (i = 0; i < sg->num_entries; i++) { + gce = &sg->gce[i]; + ips = sparx5_psfp_ipv_to_ips(gce->ipv); + /* hardware needs TimeInterval to be cumulative */ + accum_time_interval += gce->interval; + /* Set gate state */ + spx5_wr(ANA_AC_SG_GCL_GS_CONFIG_IPS_SET(ips) | + ANA_AC_SG_GCL_GS_CONFIG_GATE_STATE_SET(gce->gate_state), + sparx5, ANA_AC_SG_GCL_GS_CONFIG(i)); + + /* Set time interval */ + spx5_wr(accum_time_interval, sparx5, + ANA_AC_SG_GCL_TI_CONFIG(i)); + + /* Set maximum octets */ + spx5_wr(gce->maxoctets, sparx5, ANA_AC_SG_GCL_OCT_CONFIG(i)); + } + + return 0; +} + +static int sparx5_sdlb_conf_set(struct sparx5 *sparx5, + struct sparx5_psfp_fm *fm) +{ + int (*sparx5_sdlb_group_action)(struct sparx5 *sparx5, u32 group, + u32 idx); + + if (!fm->pol.rate && !fm->pol.burst) + sparx5_sdlb_group_action = &sparx5_sdlb_group_del; + else + sparx5_sdlb_group_action = &sparx5_sdlb_group_add; + + sparx5_policer_conf_set(sparx5, &fm->pol); + + return sparx5_sdlb_group_action(sparx5, fm->pol.group, fm->pol.idx); +} + +int sparx5_psfp_sf_add(struct sparx5 *sparx5, const struct sparx5_psfp_sf *sf, + u32 *id) +{ + int ret; + + ret = sparx5_psfp_sf_get(id); + if (ret < 0) + return ret; + + sparx5_psfp_sf_set(sparx5, *id, sf); + + return 0; +} + +int sparx5_psfp_sf_del(struct sparx5 *sparx5, u32 id) +{ + const struct sparx5_psfp_sf sf = { 0 }; + + sparx5_psfp_sf_set(sparx5, id, &sf); + + return sparx5_psfp_sf_put(id); +} + +int sparx5_psfp_sg_add(struct sparx5 *sparx5, u32 uidx, + struct sparx5_psfp_sg *sg, u32 *id) +{ + ktime_t basetime; + int ret; + + ret = sparx5_psfp_sg_get(uidx, id); + if (ret < 0) + return ret; + /* Was already in use, no need to reconfigure */ + if (ret > 1) + return 0; + + /* Calculate basetime for this stream gate */ + sparx5_new_base_time(sparx5, sg->cycletime, 0, &basetime); + sg->basetime = ktime_to_timespec64(basetime); + + sparx5_psfp_sg_set(sparx5, *id, sg); + + /* Signal hardware to copy AdminPSFP values into OperPSFP values */ + sparx5_psfp_sg_config_change(sparx5, *id); + + return 0; +} + +int sparx5_psfp_sg_del(struct sparx5 *sparx5, u32 id) +{ + const struct sparx5_psfp_sg sg = { 0 }; + int ret; + + ret = sparx5_psfp_sg_put(id); + if (ret < 0) + return ret; + /* Stream gate still in use ? */ + if (ret > 0) + return 0; + + return sparx5_psfp_sg_set(sparx5, id, &sg); +} + +int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx, + struct sparx5_psfp_fm *fm, u32 *id) +{ + struct sparx5_policer *pol = &fm->pol; + int ret; + + /* Get flow meter */ + ret = sparx5_psfp_fm_get(uidx, &fm->pol.idx); + if (ret < 0) + return ret; + /* Was already in use, no need to reconfigure */ + if (ret > 1) + return 0; + + ret = sparx5_sdlb_group_get_by_rate(sparx5, pol->rate, pol->burst); + if (ret < 0) + return ret; + + fm->pol.group = ret; + + ret = sparx5_sdlb_conf_set(sparx5, fm); + if (ret < 0) + return ret; + + *id = fm->pol.idx; + + return 0; +} + +int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id) +{ + struct sparx5_psfp_fm fm = { .pol.idx = id, + .pol.type = SPX5_POL_SERVICE }; + int ret; + + /* Find the group that this lb belongs to */ + ret = sparx5_sdlb_group_get_by_index(sparx5, id, &fm.pol.group); + if (ret < 0) + return ret; + + ret = sparx5_psfp_fm_put(id); + if (ret < 0) + return ret; + /* Do not reset flow-meter if still in use. */ + if (ret > 0) + return 0; + + return sparx5_sdlb_conf_set(sparx5, &fm); +} + +void sparx5_psfp_init(struct sparx5 *sparx5) +{ + const struct sparx5_sdlb_group *group; + int i; + + for (i = 0; i < SPX5_SDLB_GROUP_CNT; i++) { + group = &sdlb_groups[i]; + sparx5_sdlb_group_init(sparx5, group->max_rate, + group->min_burst, group->frame_size, i); + } + + spx5_wr(ANA_AC_SG_CYCLETIME_UPDATE_PERIOD_SG_CT_UPDATE_ENA_SET(1), + sparx5, ANA_AC_SG_CYCLETIME_UPDATE_PERIOD); + + spx5_rmw(ANA_L2_FWD_CFG_ISDX_LOOKUP_ENA_SET(1), + ANA_L2_FWD_CFG_ISDX_LOOKUP_ENA, sparx5, ANA_L2_FWD_CFG); +} |