Converting ecm to the new function interface requires converting
the USB ecm's function code and its users.
This patch converts the f_ecm.c to the new function interface.
The file is now compiled into a separate usb_f_ecm.ko module.
The old function interface is provided by means of a preprocessor
conditional directives. After all users are converted, the old interface
can be removed.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/usb/gadget/Kconfig | 3 +
drivers/usb/gadget/Makefile | 2 +
drivers/usb/gadget/cdc2.c | 1 +
drivers/usb/gadget/ether.c | 1 +
drivers/usb/gadget/f_ecm.c | 123 ++++++++++++++++++++++++++++++++++++++-----
drivers/usb/gadget/g_ffs.c | 1 +
drivers/usb/gadget/multi.c | 1 +
drivers/usb/gadget/nokia.c | 1 +
drivers/usb/gadget/u_ecm.h | 27 +++++++++
9 files changed, 147 insertions(+), 13 deletions(-)
create mode 100644 drivers/usb/gadget/u_ecm.h
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 8dda6e2..eb53344 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -572,6 +572,9 @@ config USB_F_NCM
config USB_F_EEM
tristate
+config USB_F_ECM
+ tristate
+
choice
tristate "USB Gadget Drivers"
default USB_ETH
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index c94e916..dfaccf4 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -91,3 +91,5 @@ usb_f_ncm-y := f_ncm.o
obj-$(CONFIG_USB_F_NCM) += usb_f_ncm.o
usb_f_eem-y := f_eem.o
obj-$(CONFIG_USB_F_EEM) += usb_f_eem.o
+usb_f_ecm-y := f_ecm.o
+obj-$(CONFIG_USB_F_ECM) += usb_f_ecm.o
diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 7ccfa48..17e30df 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -42,6 +42,7 @@ USB_GADGET_COMPOSITE_OPTIONS();
* the runtime footprint, and giving us at least some parts of what
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
*/
+#define USB_FECM_INCLUDED
#include "f_ecm.c"
/*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 41e3867..550b1f3 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -103,6 +103,7 @@ static inline bool has_rndis(void)
* the runtime footprint, and giving us at least some parts of what
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
*/
+#define USB_FECM_INCLUDED
#include "f_ecm.c"
#include "f_subset.c"
#ifdef USB_ETH_RNDIS
diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index d893d69..189495f 100644
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -14,10 +14,12 @@
#include <linux/slab.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/device.h>
#include <linux/etherdevice.h>
#include "u_ether.h"
+#include "u_ecm.h"
/*
@@ -687,6 +689,27 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
int status;
struct usb_ep *ep;
+#ifndef USB_FECM_INCLUDED
+ struct f_ecm_opts *ecm_opts;
+
+ if (!can_support_ecm(cdev->gadget))
+ return -EINVAL;
+
+ ecm_opts = container_of(f->fi, struct f_ecm_opts, func_inst);
+ if (!ecm_opts->ethaddr)
+ return -EINVAL;
+#endif
+ if (ecm_string_defs[0].id == 0) {
+ status = usb_string_ids_tab(c->cdev, ecm_string_defs);
+ if (status)
+ return status;
+
+ ecm_control_intf.iInterface = ecm_string_defs[0].id;
+ ecm_data_intf.iInterface = ecm_string_defs[2].id;
+ ecm_desc.iMACAddress = ecm_string_defs[1].id;
+ ecm_iad_descriptor.iFunction = ecm_string_defs[3].id;
+ }
+
/* allocate instance-specific interface IDs */
status = usb_interface_id(c, f);
if (status < 0)
@@ -796,8 +819,10 @@ fail:
return status;
}
+#ifdef USB_FECM_INCLUDED
+
static void
-ecm_unbind(struct usb_configuration *c, struct usb_function *f)
+ecm_old_unbind(struct usb_configuration *c, struct usb_function *f)
{
struct f_ecm *ecm = func_to_ecm(f);
@@ -833,17 +858,6 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
if (!can_support_ecm(c->cdev->gadget) || !ethaddr)
return -EINVAL;
- if (ecm_string_defs[0].id == 0) {
- status = usb_string_ids_tab(c->cdev, ecm_string_defs);
- if (status)
- return status;
-
- ecm_control_intf.iInterface = ecm_string_defs[0].id;
- ecm_data_intf.iInterface = ecm_string_defs[2].id;
- ecm_desc.iMACAddress = ecm_string_defs[1].id;
- ecm_iad_descriptor.iFunction = ecm_string_defs[3].id;
- }
-
/* allocate and initialize one new instance */
ecm = kzalloc(sizeof *ecm, GFP_KERNEL);
if (!ecm)
@@ -860,7 +874,7 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
ecm->port.func.strings = ecm_strings;
/* descriptors are per-instance copies */
ecm->port.func.bind = ecm_bind;
- ecm->port.func.unbind = ecm_unbind;
+ ecm->port.func.unbind = ecm_old_unbind;
ecm->port.func.set_alt = ecm_set_alt;
ecm->port.func.get_alt = ecm_get_alt;
ecm->port.func.setup = ecm_setup;
@@ -871,3 +885,86 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
kfree(ecm);
return status;
}
+
+#else
+
+static void ecm_free_inst(struct usb_function_instance *f)
+{
+ struct f_ecm_opts *opts;
+
+ opts = container_of(f, struct f_ecm_opts, func_inst);
+ kfree(opts);
+}
+
+static struct usb_function_instance *ecm_alloc_inst(void)
+{
+ struct f_ecm_opts *opts;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+
+ opts->func_inst.free_func_inst = ecm_free_inst;
+
+ return &opts->func_inst;
+}
+
+static void ecm_free(struct usb_function *f)
+{
+ struct f_ecm *ecm;
+
+ ecm = func_to_ecm(f);
+ kfree(ecm);
+}
+
+static void ecm_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct f_ecm *ecm = func_to_ecm(f);
+
+ DBG(c->cdev, "ecm unbind\n");
+
+ ecm_string_defs[0].id = 0;
+ usb_free_all_descriptors(f);
+
+ kfree(ecm->notify_req->buf);
+ usb_ep_free_request(ecm->notify, ecm->notify_req);
+}
+
+struct usb_function *ecm_alloc(struct usb_function_instance *fi)
+{
+ struct f_ecm *ecm;
+ struct f_ecm_opts *opts;
+
+ /* allocate and initialize one new instance */
+ ecm = kzalloc(sizeof(*ecm), GFP_KERNEL);
+ if (!ecm)
+ return ERR_PTR(-ENOMEM);
+
+ opts = container_of(fi, struct f_ecm_opts, func_inst);
+
+ /* export host's Ethernet address in CDC format */
+ snprintf(ecm->ethaddr, sizeof(ecm->ethaddr), "%pm", opts->ethaddr);
+ ecm_string_defs[1].s = ecm->ethaddr;
+
+ ecm->port.ioport = opts->dev;
+ ecm->port.cdc_filter = DEFAULT_FILTER;
+
+ ecm->port.func.name = "cdc_ethernet";
+ ecm->port.func.strings = ecm_strings;
+ /* descriptors are per-instance copies */
+ ecm->port.func.bind = ecm_bind;
+ ecm->port.func.unbind = ecm_unbind;
+ ecm->port.func.set_alt = ecm_set_alt;
+ ecm->port.func.get_alt = ecm_get_alt;
+ ecm->port.func.setup = ecm_setup;
+ ecm->port.func.disable = ecm_disable;
+ ecm->port.func.free_func = ecm_free;
+
+ return &ecm->port.func;
+}
+
+DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Brownell");
+
+#endif
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 4f7589d..9e4bef5 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -28,6 +28,7 @@
# define USB_ETH_RNDIS y
# endif
+#define USB_FECM_INCLUDED
# include "f_ecm.c"
# include "f_subset.c"
# ifdef USB_ETH_RNDIS
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 6283172..c52ec0f 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -43,6 +43,7 @@ MODULE_LICENSE("GPL");
*/
#include "f_mass_storage.h"
+#define USB_FECM_INCLUDED
#include "f_ecm.c"
#include "f_subset.c"
#ifdef USB_ETH_RNDIS
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index 1310bb8..b27f3a3 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -37,6 +37,7 @@
* the runtime footprint, and giving us at least some parts of what
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
*/
+#define USB_FECM_INCLUDED
#include "f_ecm.c"
#include "f_obex.c"
#include "f_serial.c"
diff --git a/drivers/usb/gadget/u_ecm.h b/drivers/usb/gadget/u_ecm.h
new file mode 100644
index 0000000..1bd1682
--- /dev/null
+++ b/drivers/usb/gadget/u_ecm.h
@@ -0,0 +1,27 @@
+/*
+ * u_ecm.h
+ *
+ * Utility definitions for the ecm function
+ *
+ * Copyright (c) 2013 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef U_ECM_H
+#define U_ECM_H
+
+#include <linux/usb/composite.h>
+
+struct f_ecm_opts {
+ struct usb_function_instance func_inst;
+ u8 *ethaddr;
+ struct eth_dev *dev;
+};
+
+#endif /* U_ECM_H */
--
1.7.0.4
--
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