libertas: moveing mesh-related functions into mesh.c

This moves mesh initialization, start/stop and rx/tx handling from
into mesh.c.

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 435 insertions, 6 deletions

diff --git a/drivers/net/wireless/libertas/mesh.c b/drivers/net/wireless/libertas/mesh.c
index 871f914a75f..80c2c7a31c8 100644
--- a/drivers/net/wireless/libertas/mesh.c
+++ b/drivers/net/wireless/libertas/mesh.c
@@ -6,15 +6,444 @@
 #include <linux/kthread.h>
 #include <linux/kfifo.h>
 
-#include "host.h"
+#include "mesh.h"
 #include "decl.h"
-#include "dev.h"
-#include "wext.h"
-#include "debugfs.h"
-#include "scan.h"
-#include "assoc.h"
 #include "cmd.h"
 
+
+/***************************************************************************
+ * Mesh sysfs support
+ */
+
+/**
+ * Attributes exported through sysfs
+ */
+
+/**
+ * @brief Get function for sysfs attribute anycast_mask
+ */
+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]));
+}
+
+/**
+ * @brief Set function for sysfs attribute anycast_mask
+ */
+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);
+}
+
+/**
+ * @brief Get function for sysfs attribute prb_rsp_limit
+ */
+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);
+}
+
+/**
+ * @brief Set function for sysfs attribute prb_rsp_limit
+ */
+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 (!strict_strtoul(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);
+}
+
+/**
+ * Get function for sysfs attribute mesh
+ */
+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);
+}
+
+/**
+ *  Set function for sysfs attribute mesh
+ */
+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;
+        int ret, action = CMD_ACT_MESH_CONFIG_STOP;
+
+        sscanf(buf, "%x", &enable);
+        enable = !!enable;
+        if (enable == !!priv->mesh_dev)
+                return count;
+        if (enable)
+                action = CMD_ACT_MESH_CONFIG_START;
+        ret = lbs_mesh_config(priv, action, priv->channel);
+        if (ret)
+                return ret;
+
+        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 struct attribute_group lbs_mesh_attr_group = {
+        .attrs = lbs_mesh_sysfs_entries,
+};
+
+
+
+/***************************************************************************
+ * Initializing and starting, stopping mesh
+ */
+
+/*
+ * Check mesh FW version and appropriately send the mesh start
+ * command
+ */
+int lbs_init_mesh(struct lbs_private *priv)
+{
+        struct net_device *dev = priv->dev;
+        int ret = 0;
+
+        lbs_deb_enter(LBS_DEB_MESH);
+
+        if (priv->mesh_fw_ver == MESH_FW_OLD) {
+                /* 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,
+                                    priv->channel)) {
+                        priv->mesh_tlv = TLV_TYPE_MESH_ID;
+                        if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
+                                            priv->channel))
+                                priv->mesh_tlv = 0;
+                }
+        } else if (priv->mesh_fw_ver == MESH_FW_NEW) {
+                /* 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,
+                                    priv->channel))
+                        priv->mesh_tlv = 0;
+        }
+        if (priv->mesh_tlv) {
+                lbs_add_mesh(priv);
+
+                if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
+                        lbs_pr_err("cannot register lbs_mesh attribute\n");
+
+                ret = 1;
+        }
+
+        lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
+        return ret;
+}
+
+
+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;
+}
+
+
+/**
+ *  @brief This function closes the mshX interface
+ *
+ *  @param dev     A pointer to net_device structure
+ *  @return        0
+ */
+static int lbs_mesh_stop(struct net_device *dev)
+{
+        struct lbs_private *priv = dev->ml_priv;
+
+        lbs_deb_enter(LBS_DEB_MESH);
+        spin_lock_irq(&priv->driver_lock);
+
+        priv->mesh_open = 0;
+        priv->mesh_connect_status = LBS_DISCONNECTED;
+
+        netif_stop_queue(dev);
+        netif_carrier_off(dev);
+
+        spin_unlock_irq(&priv->driver_lock);
+
+        schedule_work(&priv->mcast_work);
+
+        lbs_deb_leave(LBS_DEB_MESH);
+        return 0;
+}
+
+/**
+ *  @brief This function opens the mshX interface
+ *
+ *  @param dev     A pointer to net_device structure
+ *  @return        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);
+
+        spin_lock_irq(&priv->driver_lock);
+
+        if (priv->monitormode) {
+                ret = -EBUSY;
+                goto out;
+        }
+
+        priv->mesh_open = 1;
+        priv->mesh_connect_status = LBS_CONNECTED;
+        netif_carrier_on(dev);
+
+        if (!priv->tx_pending_len)
+                netif_wake_queue(dev);
+ out:
+
+        spin_unlock_irq(&priv->driver_lock);
+        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_multicast_list = lbs_set_multicast_list,
+};
+
+/**
+ * @brief This function adds mshX interface
+ *
+ *  @param priv    A pointer to the struct lbs_private structure
+ *  @return        0 if successful, -X otherwise
+ */
+int lbs_add_mesh(struct lbs_private *priv)
+{
+        struct net_device *mesh_dev = NULL;
+        int ret = 0;
+
+        lbs_deb_enter(LBS_DEB_MESH);
+
+        /* Allocate a virtual mesh device */
+        mesh_dev = alloc_netdev(0, "msh%d", ether_setup);
+        if (!mesh_dev) {
+                lbs_deb_mesh("init mshX device failed\n");
+                ret = -ENOMEM;
+                goto done;
+        }
+        mesh_dev->ml_priv = priv;
+        priv->mesh_dev = mesh_dev;
+
+        mesh_dev->netdev_ops = &mesh_netdev_ops;
+        mesh_dev->ethtool_ops = &lbs_ethtool_ops;
+        memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
+                        sizeof(priv->dev->dev_addr));
+
+        SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
+
+#ifdef  WIRELESS_EXT
+        mesh_dev->wireless_handlers = &mesh_handler_def;
+#endif
+        mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
+        /* Register virtual mesh interface */
+        ret = register_netdev(mesh_dev);
+        if (ret) {
+                lbs_pr_err("cannot register mshX virtual interface\n");
+                goto err_free;
+        }
+
+        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:
+        free_netdev(mesh_dev);
+
+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;
+        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_fw_ver == MESH_FW_OLD) {
+                        if (rxpd->rx_control & RxPD_MESH_FRAME)
+                                dev = priv->mesh_dev;
+                } else if (priv->mesh_fw_ver == MESH_FW_NEW) {
+                        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_fw_ver == MESH_FW_OLD)
+                        txpd->tx_control |= cpu_to_le32(TxPD_MESH_FRAME);
+                else if (priv->mesh_fw_ver == MESH_FW_NEW)
+                        txpd->u.bss.bss_num = MESH_IFACE_ID;
+        }
+}
+
+
+/***************************************************************************
+ * Persistent configuration support
+ */
+
 static int mesh_get_default_parameters(struct device *dev,
                                        struct mrvl_mesh_defaults *defs)
 {