Here I present the conversion of everthing that is required to provide the equivalent of g_ncm.ko with configfs.
This is the second version of the series after discussion with Alan and Michal's review - thank you guys. A branch will be available here (from 24th April 2013): git://git.infradead.org/users/kmpark/linux-samsung usb-gadget-configfs v2..v3: - fixed a bug resulting from the delayed registration of a network interface (should be registered only once) v1..v2: - delayed registering a network interface until gadgets's bind (per Alan's request) - created a helper macro to define USB Ethernet modules' parameters (Michal's review) - fixed and simplified some helper functions (Michal's review) - changed hostaddr variable name to host_mac in several modules (Michal's review) BACKWARD COMPATIBILITY ====================== Please note that the old g_ncm.ko is still available and works. USING THE NEW "GADGET" ====================== Please refer to this post: http://www.spinics.net/lists/linux-usb/msg76388.html for general information from Sebastian on how to use configfs-based gadgets (*). Here is the description specific to using g_ncm.ko equivalent. The old g_ncm.ko offered three parameters: qmult - queue length multiplier for high/super -speed devices dev_addr - device's MAC address host_addr - host's MAC address With configfs the procedure is as follows, compared to the information mentioned above (*): instead of mkdir functions/acm.ttyS1 do mkdir functions/ncm.<instance name> e.g. mkdir functions/ncm.usb0 In functions/ncm.<instance name> there will be the following attribute files: qmult dev_addr host_addr ifname and after creating the functions/ncm.<instance name> they contain default values: qmult is 5, dev_addr and host_addr are randomly selected. Except for ifname they can be written to until the function is linked to a configuration. The ifname is read-only and contains the name of the interface which was assigned by the net core, e. g. usb0. The rest of the procedure (*) remains the same. After unbinding the gadget with echo "" > UDC the symbolic links in the configuration directory can be removed, the strings/* subdirectories in the configuration directory can be removed, the strings/* subdirectories at the gadget level can be removed and the configs/* subdirectories can be removed. The functions/* subdirectories can be removed. After that the gadget directory can be removed. After that the respective modules can be unloaded. TESTING THE FUNCTIONS (actually there is just one) ================================================== ncm) On the device: ping <host's IP> On the host: ping <device's IP> Andrzej Pietrasiewicz (8): usb/gadget: u_ether: convert into module usb/gadget: rndis: convert into module usb/gadget: u_ether: construct with default values and add setters/getters usb/gadget: f_ncm: convert to new function interface with backward compatibility usb/gadget: ncm: convert to new function interface usb/gadget: f_ncm: remove compatibility layer usb/gadget: f_ncm: use usb_gstrings_attach usb/gadget: f_ncm: add configfs support drivers/usb/gadget/Kconfig | 20 +++ drivers/usb/gadget/Makefile | 5 + drivers/usb/gadget/cdc2.c | 10 +- drivers/usb/gadget/ether.c | 18 ++- drivers/usb/gadget/f_ncm.c | 333 +++++++++++++++++++++++++++++++++-------- drivers/usb/gadget/g_ffs.c | 15 +- drivers/usb/gadget/multi.c | 15 +- drivers/usb/gadget/ncm.c | 58 +++++--- drivers/usb/gadget/nokia.c | 11 +- drivers/usb/gadget/rndis.c | 16 ++ drivers/usb/gadget/rndis.h | 1 + drivers/usb/gadget/u_ether.c | 223 +++++++++++++++++++++++++--- drivers/usb/gadget/u_ether.h | 155 +++++++++++++++++++- drivers/usb/gadget/u_ncm.h | 36 +++++ 14 files changed, 776 insertions(+), 140 deletions(-) create mode 100644 drivers/usb/gadget/u_ncm.h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
