diff options
Diffstat (limited to 'drivers/usb/gadget/f_rndis.c')
| -rw-r--r-- | drivers/usb/gadget/f_rndis.c | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 36e8c44d8e5e..5c274f1d7b7a 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -25,7 +25,6 @@ #include "u_ether.h" #include "rndis.h" - /* * This function is an RNDIS Ethernet port -- a Microsoft protocol that's * been promoted instead of the standard CDC Ethernet. The published RNDIS @@ -67,6 +66,16 @@ * - MS-Windows drivers sometimes emit undocumented requests. */ +static unsigned int rndis_dl_max_pkt_per_xfer = 3; +module_param(rndis_dl_max_pkt_per_xfer, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(rndis_dl_max_pkt_per_xfer, + "Maximum packets per transfer for DL aggregation"); + +static unsigned int rndis_ul_max_pkt_per_xfer = 3; +module_param(rndis_ul_max_pkt_per_xfer, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(rndis_ul_max_pkt_per_xfer, + "Maximum packets per transfer for UL aggregation"); + struct f_rndis { struct gether port; u8 ctrl_id, data_id; @@ -448,6 +457,7 @@ static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) { struct f_rndis *rndis = req->context; int status; + rndis_init_msg_type *buf; /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ // spin_lock(&dev->lock); @@ -455,6 +465,21 @@ static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) if (status < 0) pr_err("RNDIS command error %d, %d/%d\n", status, req->actual, req->length); + + buf = (rndis_init_msg_type *)req->buf; + + if (buf->MessageType == RNDIS_MSG_INIT) { + if (buf->MaxTransferSize > 2048) + rndis->port.multi_pkt_xfer = 1; + else + rndis->port.multi_pkt_xfer = 0; + pr_info("%s: MaxTransferSize: %d : Multi_pkt_txr: %s\n", + __func__, buf->MaxTransferSize, + rndis->port.multi_pkt_xfer ? "enabled" : + "disabled"); + if (rndis_dl_max_pkt_per_xfer <= 1) + rndis->port.multi_pkt_xfer = 0; + } // spin_unlock(&dev->lock); } @@ -748,6 +773,7 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0); rndis_set_host_mac(rndis->config, rndis->ethaddr); + rndis_set_max_pkt_xfer(rndis->config, rndis_ul_max_pkt_per_xfer); if (rndis->manufacturer && rndis->vendorID && rndis_set_param_vendor(rndis->config, rndis->vendorID, @@ -821,12 +847,12 @@ rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], if (!can_support_rndis(c) || !ethaddr) return -EINVAL; - if (rndis_string_defs[0].id == 0) { - /* ... and setup RNDIS itself */ - status = rndis_init(); - if (status < 0) - return status; + /* setup RNDIS itself */ + status = rndis_init(); + if (status < 0) + return status; + if (rndis_string_defs[0].id == 0) { status = usb_string_ids_tab(c->cdev, rndis_string_defs); if (status) return status; @@ -854,6 +880,8 @@ rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], rndis->port.header_len = sizeof(struct rndis_packet_msg_type); rndis->port.wrap = rndis_add_header; rndis->port.unwrap = rndis_rm_hdr; + rndis->port.ul_max_pkts_per_xfer = rndis_ul_max_pkt_per_xfer; + rndis->port.dl_max_pkts_per_xfer = rndis_dl_max_pkt_per_xfer; rndis->port.func.name = "rndis"; rndis->port.func.strings = rndis_strings; |