#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;
lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
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);
lbs_deb_leave(LBS_DEB_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;
lbs_deb_enter(LBS_DEB_CMD);
/*
* 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);
lbs_deb_leave(LBS_DEB_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 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;
ie->val.mesh_id_len = priv->mesh_ssid_len;
memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
ie->len = sizeof(struct mrvl_meshie_val) -
IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_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, priv->mesh_ssid_len,
priv->mesh_ssid);
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
*/
/**
* lbs_anycast_get - Get function for sysfs attribute anycast_mask
* @dev: the &struct device
* @attr: device attributes
* @buf: buffer where data will be returned
*/
static ssize_t lbs_anycast_get(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 snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
}
/**
* lbs_anycast_set - 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 lbs_anycast_set(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);
}
/**
* lbs_prb_rsp_limit_get - 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 lbs_prb_rsp_limit_get(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 snprintf(buf, 10, "%d\n", retry_limit);
}
/**
* lbs_prb_rsp_limit_set - 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 lbs_prb_rsp_limit_set(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);
if (!kstrtoul(buf, 10, &retry_limit))
return -ENOTSUPP;
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_get - 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_get(struct device *dev,
struct device_attribute *attr, char * buf)
{
struct lbs_private *priv = to_net_dev(dev)->ml_priv;
return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
}
/**
* lbs_mesh_set - 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_set(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(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
/*
* anycast_mask attribute to be exported per mshX interface
* through sysfs (/sys/class/net/mshX/anycast_mask)
*/
static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
/*
* prb_rsp_limit attribute to be exported per mshX interface
* through sysfs (/sys/class/net/mshX/prb_rsp_limit)
*/
static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
lbs_prb_rsp_limit_set);
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_get - Get function for sysfs attribute bootflag
* @dev: the &struct device
* @attr: device attributes
* @buf: buffer where data will be returned
*/
static ssize_t bootflag_get(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 snprintf(buf, 12, "%d\n", le32_to_cpu(defs.bootflag));
}
/**
* bootflag_set - 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_set(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_get - Get function for sysfs attribute boottime
* @dev: the &struct device
* @attr: device attributes
* @buf: buffer where data will be returned
*/
static ssize_t boottime_get(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 snprintf(buf, 12, "%d\n", defs.boottime);
}
/**
* boottime_set - 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_set(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_get - Get function for sysfs attribute channel
* @dev: the &struct device
* @attr: device attributes
* @buf: buffer where data will be returned
*/
static ssize_t channel_get(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 snprintf(buf, 12, "%d\n", le16_to_cpu(defs.channel));
}
/**
* channel_set - 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_set(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_get - 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_get(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_set - 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_set(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_get - 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_get(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 snprintf(buf, 5, "%d\n", defs.meshie.val.active_protocol_id);
}
/**
* protocol_id_set - 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_set(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_get - 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_get(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 snprintf(buf, 5, "%d\n", defs.meshie.val.active_metric_id);
}
/**
* metric_id_set - 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_set(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_get - Get function for sysfs attribute capability
* @dev: the &struct device
* @attr: device attributes
* @buf: buffer where data will be returned
*/
static ssize_t capability_get(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 snprintf(buf, 5, "%d\n", defs.meshie.val.mesh_capability);
}
/**
* capability_set - 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_set(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(bootflag, 0644, bootflag_get, bootflag_set);
static DEVICE_ATTR(boottime, 0644, boottime_get, boottime_set);
static DEVICE_ATTR(channel, 0644, channel_get, channel_set);
static DEVICE_ATTR(mesh_id, 0644, mesh_id_get, mesh_id_set);
static DEVICE_ATTR(protocol_id, 0644, protocol_id_get, protocol_id_set);
static DEVICE_ATTR(metric_id, 0644, metric_id_get, metric_id_set);
static DEVICE_ATTR(capability, 0644, capability_get, capability_set);
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,
};
static void lbs_persist_config_init(struct net_device *dev)
{
int ret;
ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
}
static void lbs_persist_config_remove(struct net_device *dev)
{
sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group);
sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group);
}
/***************************************************************************
* Initializing and starting, stopping mesh
*/
/*
* Check mesh FW version and appropriately send the mesh start
* command
*/
int lbs_init_mesh(struct lbs_private *priv)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_MESH);
/* 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);
if (priv->mesh_tlv) {
sprintf(priv->mesh_ssid, "mesh");
priv->mesh_ssid_len = 4;
ret = 1;
}
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
return ret;
}
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;
lbs_deb_enter(LBS_DEB_MESH);
if (priv->mesh_tlv) {
device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
ret = 1;
}
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
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_deb_enter(LBS_DEB_MESH);
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);
lbs_deb_leave(LBS_DEB_MESH);
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;
lbs_deb_enter(LBS_DEB_NET);
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:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
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;
lbs_deb_enter(LBS_DEB_MESH);
/* 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;
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;
/* Register virtual mesh interface */
ret = register_netdev(mesh_dev);
if (ret) {
pr_err("cannot register mshX virtual interface\n");
goto err_free_netdev;
}
ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
if (ret)
goto err_unregister;
lbs_persist_config_init(mesh_dev);
/* Everything successful */
ret = 0;
goto done;
err_unregister:
unregister_netdev(mesh_dev);
err_free_netdev:
free_netdev(mesh_dev);
err_free_wdev:
kfree(mesh_wdev);
done:
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
return ret;
}
void lbs_remove_mesh(struct lbs_private *priv)
{
struct net_device *mesh_dev;
mesh_dev = priv->mesh_dev;
if (!mesh_dev)
return;
lbs_deb_enter(LBS_DEB_MESH);
netif_stop_queue(mesh_dev);
netif_carrier_off(mesh_dev);
sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
lbs_persist_config_remove(mesh_dev);
unregister_netdev(mesh_dev);
priv->mesh_dev = NULL;
kfree(mesh_dev->ieee80211_ptr);
free_netdev(mesh_dev);
lbs_deb_leave(LBS_DEB_MESH);
}
/***************************************************************************
* 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 * const mesh_stat_strings[] = {
"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;
lbs_deb_enter(LBS_DEB_ETHTOOL);
/* 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;
lbs_deb_enter(LBS_DEB_ETHTOOL);
}
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)
{
int i;
lbs_deb_enter(LBS_DEB_ETHTOOL);
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < MESH_STATS_NUM; i++) {
memcpy(s + i * ETH_GSTRING_LEN,
mesh_stat_strings[i],
ETH_GSTRING_LEN);
}
break;
}
lbs_deb_enter(LBS_DEB_ETHTOOL);
}