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author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-05-28 09:16:01 +0200 |
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committer | Felipe Balbi <balbi@ti.com> | 2013-06-10 17:58:10 +0300 |
commit | b3df2faacb40da7d9c4ed1a0b5304cf346e46ca0 (patch) | |
tree | 5a5eafd9044afc02b13a5f3546ebbd505cd44f9a /drivers/usb/gadget/f_rndis.c | |
parent | 4e75e7275652824395696ba1e34c10d368958caf (diff) | |
download | op-kernel-dev-b3df2faacb40da7d9c4ed1a0b5304cf346e46ca0.zip op-kernel-dev-b3df2faacb40da7d9c4ed1a0b5304cf346e46ca0.tar.gz |
usb: gadget: f_rndis: add configfs support
f_rndis learns about configfs so we can, eventually,
remove in-kernel gadget drivers.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_rndis.c')
-rw-r--r-- | drivers/usb/gadget/f_rndis.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 4045ca2..191df35 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -24,6 +24,7 @@ #include <linux/atomic.h> #include "u_ether.h" +#include "u_ether_configfs.h" #include "u_rndis.h" #include "rndis.h" @@ -903,6 +904,41 @@ void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net) } EXPORT_SYMBOL(rndis_borrow_net); +static inline struct f_rndis_opts *to_f_rndis_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_rndis_opts, + func_inst.group); +} + +/* f_rndis_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(rndis); + +/* f_rndis_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(rndis); + +/* f_rndis_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(rndis); + +/* f_rndis_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(rndis); + +/* f_rndis_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(rndis); + +static struct configfs_attribute *rndis_attrs[] = { + &f_rndis_opts_dev_addr.attr, + &f_rndis_opts_host_addr.attr, + &f_rndis_opts_qmult.attr, + &f_rndis_opts_ifname.attr, + NULL, +}; + +static struct config_item_type rndis_func_type = { + .ct_item_ops = &rndis_item_ops, + .ct_attrs = rndis_attrs, + .ct_owner = THIS_MODULE, +}; + static void rndis_free_inst(struct usb_function_instance *f) { struct f_rndis_opts *opts; @@ -924,22 +960,30 @@ static struct usb_function_instance *rndis_alloc_inst(void) opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); - + mutex_init(&opts->lock); opts->func_inst.free_func_inst = rndis_free_inst; opts->net = gether_setup_default(); if (IS_ERR(opts->net)) return ERR_CAST(opts->net); + config_group_init_type_name(&opts->func_inst.group, "", + &rndis_func_type); + return &opts->func_inst; } static void rndis_free(struct usb_function *f) { struct f_rndis *rndis; + struct f_rndis_opts *opts; rndis = func_to_rndis(f); rndis_deregister(rndis->config); + opts = container_of(f->fi, struct f_rndis_opts, func_inst); kfree(rndis); + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); } static void rndis_unbind(struct usb_configuration *c, struct usb_function *f) @@ -964,12 +1008,15 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi) return ERR_PTR(-ENOMEM); opts = container_of(fi, struct f_rndis_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; gether_get_host_addr_u8(opts->net, rndis->ethaddr); rndis->vendorID = opts->vendor_id; rndis->manufacturer = opts->manufacturer; rndis->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); /* RNDIS activates when the host changes this filter */ rndis->port.cdc_filter = 0; |