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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/wireless/marvell/libertas/mesh.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/wireless/marvell/libertas/mesh.c')
-rw-r--r-- | drivers/net/wireless/marvell/libertas/mesh.c | 1146 |
1 files changed, 1146 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/libertas/mesh.c b/drivers/net/wireless/marvell/libertas/mesh.c new file mode 100644 index 000000000..90ffe8d1e --- /dev/null +++ b/drivers/net/wireless/marvell/libertas/mesh.c @@ -0,0 +1,1146 @@ +// SPDX-License-Identifier: GPL-2.0 +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/delay.h> +#include <linux/etherdevice.h> +#include <linux/hardirq.h> +#include <linux/netdevice.h> +#include <linux/if_ether.h> +#include <linux/if_arp.h> +#include <linux/kthread.h> +#include <linux/kfifo.h> +#include <net/cfg80211.h> + +#include "mesh.h" +#include "decl.h" +#include "cmd.h" + + +static int lbs_add_mesh(struct lbs_private *priv); + +/*************************************************************************** + * Mesh command handling + */ + +static int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action, + struct cmd_ds_mesh_access *cmd) +{ + int ret; + + cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS); + cmd->hdr.size = cpu_to_le16(sizeof(*cmd)); + cmd->hdr.result = 0; + + cmd->action = cpu_to_le16(cmd_action); + + ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd); + + return ret; +} + +static int __lbs_mesh_config_send(struct lbs_private *priv, + struct cmd_ds_mesh_config *cmd, + uint16_t action, uint16_t type) +{ + int ret; + u16 command = CMD_MESH_CONFIG_OLD; + + /* + * Command id is 0xac for v10 FW along with mesh interface + * id in bits 14-13-12. + */ + if (priv->mesh_tlv == TLV_TYPE_MESH_ID) + command = CMD_MESH_CONFIG | + (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET); + + cmd->hdr.command = cpu_to_le16(command); + cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config)); + cmd->hdr.result = 0; + + cmd->type = cpu_to_le16(type); + cmd->action = cpu_to_le16(action); + + ret = lbs_cmd_with_response(priv, command, cmd); + + return ret; +} + +static int lbs_mesh_config_send(struct lbs_private *priv, + struct cmd_ds_mesh_config *cmd, + uint16_t action, uint16_t type) +{ + int ret; + + if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG)) + return -EOPNOTSUPP; + + ret = __lbs_mesh_config_send(priv, cmd, action, type); + return ret; +} + +/* This function is the CMD_MESH_CONFIG legacy function. It only handles the + * START and STOP actions. The extended actions supported by CMD_MESH_CONFIG + * are all handled by preparing a struct cmd_ds_mesh_config and passing it to + * lbs_mesh_config_send. + */ +static int lbs_mesh_config(struct lbs_private *priv, uint16_t action, + uint16_t chan) +{ + struct wireless_dev *mesh_wdev; + struct cmd_ds_mesh_config cmd; + struct mrvl_meshie *ie; + + memset(&cmd, 0, sizeof(cmd)); + cmd.channel = cpu_to_le16(chan); + ie = (struct mrvl_meshie *)cmd.data; + + switch (action) { + case CMD_ACT_MESH_CONFIG_START: + ie->id = WLAN_EID_VENDOR_SPECIFIC; + ie->val.oui[0] = 0x00; + ie->val.oui[1] = 0x50; + ie->val.oui[2] = 0x43; + ie->val.type = MARVELL_MESH_IE_TYPE; + ie->val.subtype = MARVELL_MESH_IE_SUBTYPE; + ie->val.version = MARVELL_MESH_IE_VERSION; + ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP; + ie->val.active_metric_id = MARVELL_MESH_METRIC_ID; + ie->val.mesh_capability = MARVELL_MESH_CAPABILITY; + + if (priv->mesh_dev) { + mesh_wdev = priv->mesh_dev->ieee80211_ptr; + ie->val.mesh_id_len = mesh_wdev->u.mesh.id_up_len; + memcpy(ie->val.mesh_id, mesh_wdev->u.mesh.id, + mesh_wdev->u.mesh.id_up_len); + } + + ie->len = sizeof(struct mrvl_meshie_val) - + IEEE80211_MAX_SSID_LEN + ie->val.mesh_id_len; + + cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val)); + break; + case CMD_ACT_MESH_CONFIG_STOP: + break; + default: + return -1; + } + lbs_deb_cmd("mesh config action %d type %x channel %d SSID %*pE\n", + action, priv->mesh_tlv, chan, ie->val.mesh_id_len, + ie->val.mesh_id); + + return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv); +} + +int lbs_mesh_set_channel(struct lbs_private *priv, u8 channel) +{ + priv->mesh_channel = channel; + return lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, channel); +} + +static uint16_t lbs_mesh_get_channel(struct lbs_private *priv) +{ + return priv->mesh_channel ?: 1; +} + +/*************************************************************************** + * Mesh sysfs support + */ + +/* + * Attributes exported through sysfs + */ + +/** + * anycast_mask_show - Get function for sysfs attribute anycast_mask + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t anycast_mask_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_access mesh_access; + int ret; + + memset(&mesh_access, 0, sizeof(mesh_access)); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access); + if (ret) + return ret; + + return sysfs_emit(buf, "0x%X\n", le32_to_cpu(mesh_access.data[0])); +} + +/** + * anycast_mask_store - Set function for sysfs attribute anycast_mask + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t anycast_mask_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_access mesh_access; + uint32_t datum; + int ret; + + memset(&mesh_access, 0, sizeof(mesh_access)); + sscanf(buf, "%x", &datum); + mesh_access.data[0] = cpu_to_le32(datum); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * prb_rsp_limit_show - Get function for sysfs attribute prb_rsp_limit + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t prb_rsp_limit_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_access mesh_access; + int ret; + u32 retry_limit; + + memset(&mesh_access, 0, sizeof(mesh_access)); + mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT, + &mesh_access); + if (ret) + return ret; + + retry_limit = le32_to_cpu(mesh_access.data[1]); + return sysfs_emit(buf, "%d\n", retry_limit); +} + +/** + * prb_rsp_limit_store - Set function for sysfs attribute prb_rsp_limit + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t prb_rsp_limit_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_access mesh_access; + int ret; + unsigned long retry_limit; + + memset(&mesh_access, 0, sizeof(mesh_access)); + mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET); + + ret = kstrtoul(buf, 10, &retry_limit); + if (ret) + return ret; + if (retry_limit > 15) + return -ENOTSUPP; + + mesh_access.data[1] = cpu_to_le32(retry_limit); + + ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT, + &mesh_access); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * lbs_mesh_show - Get function for sysfs attribute mesh + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t lbs_mesh_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + return sysfs_emit(buf, "0x%X\n", !!priv->mesh_dev); +} + +/** + * lbs_mesh_store - Set function for sysfs attribute mesh + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t lbs_mesh_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + int enable; + + sscanf(buf, "%x", &enable); + enable = !!enable; + if (enable == !!priv->mesh_dev) + return count; + + if (enable) + lbs_add_mesh(priv); + else + lbs_remove_mesh(priv); + + return count; +} + +/* + * lbs_mesh attribute to be exported per ethX interface + * through sysfs (/sys/class/net/ethX/lbs_mesh) + */ +static DEVICE_ATTR_RW(lbs_mesh); + +/* + * anycast_mask attribute to be exported per mshX interface + * through sysfs (/sys/class/net/mshX/anycast_mask) + */ +static DEVICE_ATTR_RW(anycast_mask); + +/* + * prb_rsp_limit attribute to be exported per mshX interface + * through sysfs (/sys/class/net/mshX/prb_rsp_limit) + */ +static DEVICE_ATTR_RW(prb_rsp_limit); + +static struct attribute *lbs_mesh_sysfs_entries[] = { + &dev_attr_anycast_mask.attr, + &dev_attr_prb_rsp_limit.attr, + NULL, +}; + +static const struct attribute_group lbs_mesh_attr_group = { + .attrs = lbs_mesh_sysfs_entries, +}; + + +/*************************************************************************** + * Persistent configuration support + */ + +static int mesh_get_default_parameters(struct device *dev, + struct mrvl_mesh_defaults *defs) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_config cmd; + int ret; + + memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config)); + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_GET, + CMD_TYPE_MESH_GET_DEFAULTS); + + if (ret) + return -EOPNOTSUPP; + + memcpy(defs, &cmd.data[0], sizeof(struct mrvl_mesh_defaults)); + + return 0; +} + +/** + * bootflag_show - Get function for sysfs attribute bootflag + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t bootflag_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", le32_to_cpu(defs.bootflag)); +} + +/** + * bootflag_store - Set function for sysfs attribute bootflag + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t bootflag_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_config cmd; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if ((ret != 1) || (datum > 1)) + return -EINVAL; + + *((__le32 *)&cmd.data[0]) = cpu_to_le32(!!datum); + cmd.length = cpu_to_le16(sizeof(uint32_t)); + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_BOOTFLAG); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * boottime_show - Get function for sysfs attribute boottime + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t boottime_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", defs.boottime); +} + +/** + * boottime_store - Set function for sysfs attribute boottime + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t boottime_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_config cmd; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if ((ret != 1) || (datum > 255)) + return -EINVAL; + + /* A too small boot time will result in the device booting into + * standalone (no-host) mode before the host can take control of it, + * so the change will be hard to revert. This may be a desired + * feature (e.g to configure a very fast boot time for devices that + * will not be attached to a host), but dangerous. So I'm enforcing a + * lower limit of 20 seconds: remove and recompile the driver if this + * does not work for you. + */ + datum = (datum < 20) ? 20 : datum; + cmd.data[0] = datum; + cmd.length = cpu_to_le16(sizeof(uint8_t)); + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_BOOTTIME); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * channel_show - Get function for sysfs attribute channel + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t channel_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", le16_to_cpu(defs.channel)); +} + +/** + * channel_store - Set function for sysfs attribute channel + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t channel_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + struct cmd_ds_mesh_config cmd; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if (ret != 1 || datum < 1 || datum > 11) + return -EINVAL; + + *((__le16 *)&cmd.data[0]) = cpu_to_le16(datum); + cmd.length = cpu_to_le16(sizeof(uint16_t)); + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_DEF_CHANNEL); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * mesh_id_show - Get function for sysfs attribute mesh_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t mesh_id_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + if (defs.meshie.val.mesh_id_len > IEEE80211_MAX_SSID_LEN) { + dev_err(dev, "inconsistent mesh ID length\n"); + defs.meshie.val.mesh_id_len = IEEE80211_MAX_SSID_LEN; + } + + memcpy(buf, defs.meshie.val.mesh_id, defs.meshie.val.mesh_id_len); + buf[defs.meshie.val.mesh_id_len] = '\n'; + buf[defs.meshie.val.mesh_id_len + 1] = '\0'; + + return defs.meshie.val.mesh_id_len + 1; +} + +/** + * mesh_id_store - Set function for sysfs attribute mesh_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t mesh_id_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cmd_ds_mesh_config cmd; + struct mrvl_mesh_defaults defs; + struct mrvl_meshie *ie; + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + int len; + int ret; + + if (count < 2 || count > IEEE80211_MAX_SSID_LEN + 1) + return -EINVAL; + + memset(&cmd, 0, sizeof(struct cmd_ds_mesh_config)); + ie = (struct mrvl_meshie *) &cmd.data[0]; + + /* fetch all other Information Element parameters */ + ret = mesh_get_default_parameters(dev, &defs); + + cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie)); + + /* transfer IE elements */ + memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie)); + + len = count - 1; + memcpy(ie->val.mesh_id, buf, len); + /* SSID len */ + ie->val.mesh_id_len = len; + /* IE len */ + ie->len = sizeof(struct mrvl_meshie_val) - IEEE80211_MAX_SSID_LEN + len; + + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_MESH_IE); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * protocol_id_show - Get function for sysfs attribute protocol_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t protocol_id_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", defs.meshie.val.active_protocol_id); +} + +/** + * protocol_id_store - Set function for sysfs attribute protocol_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t protocol_id_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cmd_ds_mesh_config cmd; + struct mrvl_mesh_defaults defs; + struct mrvl_meshie *ie; + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if ((ret != 1) || (datum > 255)) + return -EINVAL; + + /* fetch all other Information Element parameters */ + ret = mesh_get_default_parameters(dev, &defs); + + cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie)); + + /* transfer IE elements */ + ie = (struct mrvl_meshie *) &cmd.data[0]; + memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie)); + /* update protocol id */ + ie->val.active_protocol_id = datum; + + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_MESH_IE); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * metric_id_show - Get function for sysfs attribute metric_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t metric_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", defs.meshie.val.active_metric_id); +} + +/** + * metric_id_store - Set function for sysfs attribute metric_id + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t metric_id_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cmd_ds_mesh_config cmd; + struct mrvl_mesh_defaults defs; + struct mrvl_meshie *ie; + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if ((ret != 1) || (datum > 255)) + return -EINVAL; + + /* fetch all other Information Element parameters */ + ret = mesh_get_default_parameters(dev, &defs); + + cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie)); + + /* transfer IE elements */ + ie = (struct mrvl_meshie *) &cmd.data[0]; + memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie)); + /* update metric id */ + ie->val.active_metric_id = datum; + + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_MESH_IE); + if (ret) + return ret; + + return strlen(buf); +} + +/** + * capability_show - Get function for sysfs attribute capability + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer where data will be returned + */ +static ssize_t capability_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mrvl_mesh_defaults defs; + int ret; + + ret = mesh_get_default_parameters(dev, &defs); + + if (ret) + return ret; + + return sysfs_emit(buf, "%d\n", defs.meshie.val.mesh_capability); +} + +/** + * capability_store - Set function for sysfs attribute capability + * @dev: the &struct device + * @attr: device attributes + * @buf: buffer that contains new attribute value + * @count: size of buffer + */ +static ssize_t capability_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cmd_ds_mesh_config cmd; + struct mrvl_mesh_defaults defs; + struct mrvl_meshie *ie; + struct lbs_private *priv = to_net_dev(dev)->ml_priv; + uint32_t datum; + int ret; + + memset(&cmd, 0, sizeof(cmd)); + ret = sscanf(buf, "%d", &datum); + if ((ret != 1) || (datum > 255)) + return -EINVAL; + + /* fetch all other Information Element parameters */ + ret = mesh_get_default_parameters(dev, &defs); + + cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie)); + + /* transfer IE elements */ + ie = (struct mrvl_meshie *) &cmd.data[0]; + memcpy(ie, &defs.meshie, sizeof(struct mrvl_meshie)); + /* update value */ + ie->val.mesh_capability = datum; + + ret = lbs_mesh_config_send(priv, &cmd, CMD_ACT_MESH_CONFIG_SET, + CMD_TYPE_MESH_SET_MESH_IE); + if (ret) + return ret; + + return strlen(buf); +} + + +static DEVICE_ATTR_RW(bootflag); +static DEVICE_ATTR_RW(boottime); +static DEVICE_ATTR_RW(channel); +static DEVICE_ATTR_RW(mesh_id); +static DEVICE_ATTR_RW(protocol_id); +static DEVICE_ATTR_RW(metric_id); +static DEVICE_ATTR_RW(capability); + +static struct attribute *boot_opts_attrs[] = { + &dev_attr_bootflag.attr, + &dev_attr_boottime.attr, + &dev_attr_channel.attr, + NULL +}; + +static const struct attribute_group boot_opts_group = { + .name = "boot_options", + .attrs = boot_opts_attrs, +}; + +static struct attribute *mesh_ie_attrs[] = { + &dev_attr_mesh_id.attr, + &dev_attr_protocol_id.attr, + &dev_attr_metric_id.attr, + &dev_attr_capability.attr, + NULL +}; + +static const struct attribute_group mesh_ie_group = { + .name = "mesh_ie", + .attrs = mesh_ie_attrs, +}; + + +/*************************************************************************** + * Initializing and starting, stopping mesh + */ + +/* + * Check mesh FW version and appropriately send the mesh start + * command + */ +void lbs_init_mesh(struct lbs_private *priv) +{ + /* Determine mesh_fw_ver from fwrelease and fwcapinfo */ + /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */ + /* 5.110.22 have mesh command with 0xa3 command id */ + /* 10.0.0.p0 FW brings in mesh config command with different id */ + /* Check FW version MSB and initialize mesh_fw_ver */ + if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5) { + /* Enable mesh, if supported, and work out which TLV it uses. + 0x100 + 291 is an unofficial value used in 5.110.20.pXX + 0x100 + 37 is the official value used in 5.110.21.pXX + but we check them in that order because 20.pXX doesn't + give an error -- it just silently fails. */ + + /* 5.110.20.pXX firmware will fail the command if the channel + doesn't match the existing channel. But only if the TLV + is correct. If the channel is wrong, _BOTH_ versions will + give an error to 0x100+291, and allow 0x100+37 to succeed. + It's just that 5.110.20.pXX will not have done anything + useful */ + + priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID; + if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) { + priv->mesh_tlv = TLV_TYPE_MESH_ID; + if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) + priv->mesh_tlv = 0; + } + } else + if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) && + (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK)) { + /* 10.0.0.pXX new firmwares should succeed with TLV + * 0x100+37; Do not invoke command with old TLV. + */ + priv->mesh_tlv = TLV_TYPE_MESH_ID; + if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, 1)) + priv->mesh_tlv = 0; + } + + /* Stop meshing until interface is brought up */ + lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, 1); +} + +void lbs_start_mesh(struct lbs_private *priv) +{ + lbs_add_mesh(priv); + + if (device_create_file(&priv->dev->dev, &dev_attr_lbs_mesh)) + netdev_err(priv->dev, "cannot register lbs_mesh attribute\n"); +} + +int lbs_deinit_mesh(struct lbs_private *priv) +{ + struct net_device *dev = priv->dev; + int ret = 0; + + if (priv->mesh_tlv) { + device_remove_file(&dev->dev, &dev_attr_lbs_mesh); + ret = 1; + } + + return ret; +} + + +/** + * lbs_mesh_stop - close the mshX interface + * + * @dev: A pointer to &net_device structure + * returns: 0 + */ +static int lbs_mesh_stop(struct net_device *dev) +{ + struct lbs_private *priv = dev->ml_priv; + + lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_STOP, + lbs_mesh_get_channel(priv)); + + spin_lock_irq(&priv->driver_lock); + + netif_stop_queue(dev); + netif_carrier_off(dev); + + spin_unlock_irq(&priv->driver_lock); + + lbs_update_mcast(priv); + if (!lbs_iface_active(priv)) + lbs_stop_iface(priv); + + return 0; +} + +/** + * lbs_mesh_dev_open - open the mshX interface + * + * @dev: A pointer to &net_device structure + * returns: 0 or -EBUSY if monitor mode active + */ +static int lbs_mesh_dev_open(struct net_device *dev) +{ + struct lbs_private *priv = dev->ml_priv; + int ret = 0; + + if (!priv->iface_running) { + ret = lbs_start_iface(priv); + if (ret) + goto out; + } + + spin_lock_irq(&priv->driver_lock); + + if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) { + ret = -EBUSY; + spin_unlock_irq(&priv->driver_lock); + goto out; + } + + netif_carrier_on(dev); + + if (!priv->tx_pending_len) + netif_wake_queue(dev); + + spin_unlock_irq(&priv->driver_lock); + + ret = lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START, + lbs_mesh_get_channel(priv)); + +out: + return ret; +} + +static const struct net_device_ops mesh_netdev_ops = { + .ndo_open = lbs_mesh_dev_open, + .ndo_stop = lbs_mesh_stop, + .ndo_start_xmit = lbs_hard_start_xmit, + .ndo_set_mac_address = lbs_set_mac_address, + .ndo_set_rx_mode = lbs_set_multicast_list, +}; + +/** + * lbs_add_mesh - add mshX interface + * + * @priv: A pointer to the &struct lbs_private structure + * returns: 0 if successful, -X otherwise + */ +static int lbs_add_mesh(struct lbs_private *priv) +{ + struct net_device *mesh_dev = NULL; + struct wireless_dev *mesh_wdev; + int ret = 0; + + /* Allocate a virtual mesh device */ + mesh_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); + if (!mesh_wdev) { + lbs_deb_mesh("init mshX wireless device failed\n"); + ret = -ENOMEM; + goto done; + } + + mesh_dev = alloc_netdev(0, "msh%d", NET_NAME_UNKNOWN, ether_setup); + if (!mesh_dev) { + lbs_deb_mesh("init mshX device failed\n"); + ret = -ENOMEM; + goto err_free_wdev; + } + + mesh_wdev->iftype = NL80211_IFTYPE_MESH_POINT; + mesh_wdev->wiphy = priv->wdev->wiphy; + + if (priv->mesh_tlv) { + sprintf(mesh_wdev->u.mesh.id, "mesh"); + mesh_wdev->u.mesh.id_up_len = 4; + } + + mesh_wdev->netdev = mesh_dev; + + mesh_dev->ml_priv = priv; + mesh_dev->ieee80211_ptr = mesh_wdev; + priv->mesh_dev = mesh_dev; + + mesh_dev->netdev_ops = &mesh_netdev_ops; + mesh_dev->ethtool_ops = &lbs_ethtool_ops; + eth_hw_addr_inherit(mesh_dev, priv->dev); + + SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent); + + mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST; + mesh_dev->sysfs_groups[0] = &lbs_mesh_attr_group; + mesh_dev->sysfs_groups[1] = &boot_opts_group; + mesh_dev->sysfs_groups[2] = &mesh_ie_group; + + /* Register virtual mesh interface */ + ret = register_netdev(mesh_dev); + if (ret) { + pr_err("cannot register mshX virtual interface\n"); + goto err_free_netdev; + } + + /* Everything successful */ + ret = 0; + goto done; + +err_free_netdev: + free_netdev(mesh_dev); + +err_free_wdev: + kfree(mesh_wdev); + +done: + return ret; +} + +void lbs_remove_mesh(struct lbs_private *priv) +{ + struct net_device *mesh_dev; + + mesh_dev = priv->mesh_dev; + if (!mesh_dev) + return; + + netif_stop_queue(mesh_dev); + netif_carrier_off(mesh_dev); + unregister_netdev(mesh_dev); + priv->mesh_dev = NULL; + kfree(mesh_dev->ieee80211_ptr); + free_netdev(mesh_dev); +} + + +/*************************************************************************** + * Sending and receiving + */ +struct net_device *lbs_mesh_set_dev(struct lbs_private *priv, + struct net_device *dev, struct rxpd *rxpd) +{ + if (priv->mesh_dev) { + if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) { + if (rxpd->rx_control & RxPD_MESH_FRAME) + dev = priv->mesh_dev; + } else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) { + if (rxpd->u.bss.bss_num == MESH_IFACE_ID) + dev = priv->mesh_dev; + } + } + return dev; +} + + +void lbs_mesh_set_txpd(struct lbs_private *priv, + struct net_device *dev, struct txpd *txpd) +{ + if (dev == priv->mesh_dev) { + if (priv->mesh_tlv == TLV_TYPE_OLD_MESH_ID) + txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME); + else if (priv->mesh_tlv == TLV_TYPE_MESH_ID) + txpd->u.bss.bss_num = MESH_IFACE_ID; + } +} + + +/*************************************************************************** + * Ethtool related + */ + +static const char mesh_stat_strings[MESH_STATS_NUM][ETH_GSTRING_LEN] = { + "drop_duplicate_bcast", + "drop_ttl_zero", + "drop_no_fwd_route", + "drop_no_buffers", + "fwded_unicast_cnt", + "fwded_bcast_cnt", + "drop_blind_table", + "tx_failed_cnt" +}; + +void lbs_mesh_ethtool_get_stats(struct net_device *dev, + struct ethtool_stats *stats, uint64_t *data) +{ + struct lbs_private *priv = dev->ml_priv; + struct cmd_ds_mesh_access mesh_access; + int ret; + + /* Get Mesh Statistics */ + ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_STATS, &mesh_access); + + if (ret) { + memset(data, 0, MESH_STATS_NUM*(sizeof(uint64_t))); + return; + } + + priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]); + priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]); + priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]); + priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]); + priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]); + priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]); + priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]); + priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]); + + data[0] = priv->mstats.fwd_drop_rbt; + data[1] = priv->mstats.fwd_drop_ttl; + data[2] = priv->mstats.fwd_drop_noroute; + data[3] = priv->mstats.fwd_drop_nobuf; + data[4] = priv->mstats.fwd_unicast_cnt; + data[5] = priv->mstats.fwd_bcast_cnt; + data[6] = priv->mstats.drop_blind; + data[7] = priv->mstats.tx_failed_cnt; +} + +int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset) +{ + struct lbs_private *priv = dev->ml_priv; + + if (sset == ETH_SS_STATS && dev == priv->mesh_dev) + return MESH_STATS_NUM; + + return -EOPNOTSUPP; +} + +void lbs_mesh_ethtool_get_strings(struct net_device *dev, + uint32_t stringset, uint8_t *s) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(s, mesh_stat_strings, sizeof(mesh_stat_strings)); + break; + } +} |