diff options
Diffstat (limited to 'drivers/net/usb/rndis_host.c')
| -rw-r--r-- | drivers/net/usb/rndis_host.c | 79 |
1 files changed, 56 insertions, 23 deletions
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c index b807c91abe1d..7b3739b29c8f 100644 --- a/drivers/net/usb/rndis_host.c +++ b/drivers/net/usb/rndis_host.c @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Host Side support for RNDIS Networking Links * Copyright (C) 2005 by David Brownell - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include <linux/module.h> #include <linux/netdevice.h> @@ -213,7 +201,7 @@ int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen) dev_dbg(&info->control->dev, "rndis response error, code %d\n", retval); } - msleep(20); + msleep(40); } dev_dbg(&info->control->dev, "rndis response timeout\n"); return -ETIMEDOUT; @@ -267,7 +255,8 @@ static int rndis_query(struct usbnet *dev, struct usb_interface *intf, off = le32_to_cpu(u.get_c->offset); len = le32_to_cpu(u.get_c->len); - if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE)) + if (unlikely((off > CONTROL_BUFFER_SIZE - 8) || + (len > CONTROL_BUFFER_SIZE - 8 - off))) goto response_error; if (*reply_len != -1 && len != *reply_len) @@ -291,7 +280,7 @@ static const struct net_device_ops rndis_netdev_ops = { .ndo_stop = usbnet_stop, .ndo_start_xmit = usbnet_start_xmit, .ndo_tx_timeout = usbnet_tx_timeout, - .ndo_get_stats64 = usbnet_get_stats64, + .ndo_get_stats64 = dev_get_tstats64, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; @@ -336,7 +325,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) * For RX we handle drivers that zero-pad to end-of-packet. * Don't let userspace change these settings. * - * NOTE: there still seems to be wierdness here, as if we need + * NOTE: there still seems to be weirdness here, as if we need * to do some more things to make sure WinCE targets accept this. * They default to jumbograms of 8KB or 16KB, which is absurd * for such low data rates and which is also more than Linux @@ -345,7 +334,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) net->hard_header_len += sizeof (struct rndis_data_hdr); dev->hard_mtu = net->mtu + net->hard_header_len; - dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1); + dev->maxpacket = usb_maxpacket(dev->udev, dev->out); if (dev->maxpacket == 0) { netif_dbg(dev, probe, dev->net, "dev->maxpacket can't be 0\n"); @@ -399,7 +388,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) reply_len = sizeof *phym; retval = rndis_query(dev, intf, u.buf, RNDIS_OID_GEN_PHYSICAL_MEDIUM, - 0, (void **) &phym, &reply_len); + reply_len, (void **)&phym, &reply_len); if (retval != 0 || !phym) { /* OID is optional so don't fail here. */ phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED); @@ -430,10 +419,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) goto halt_fail_and_release; } - if (bp[0] & 0x02) - eth_hw_addr_random(net); - else - ether_addr_copy(net->dev_addr, bp); + eth_hw_addr_set(net, bp); /* set a nonzero filter to enable data transfers */ memset(u.set, 0, sizeof *u.set); @@ -475,6 +461,16 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); } +static int zte_rndis_bind(struct usbnet *dev, struct usb_interface *intf) +{ + int status = rndis_bind(dev, intf); + + if (!status && (dev->net->dev_addr[0] & 0x02)) + eth_hw_addr_random(dev->net); + + return status; +} + void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) { struct rndis_halt *halt; @@ -497,10 +493,14 @@ EXPORT_SYMBOL_GPL(rndis_unbind); */ int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { + bool dst_mac_fixup; + /* This check is no longer done by usbnet */ if (skb->len < dev->net->hard_header_len) return 0; + dst_mac_fixup = !!(dev->driver_info->data & RNDIS_DRIVER_DATA_DST_MAC_FIXUP); + /* peripheral may have batched packets to us... */ while (likely(skb->len)) { struct rndis_data_hdr *hdr = (void *)skb->data; @@ -535,10 +535,17 @@ int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) break; skb_pull(skb, msg_len - sizeof *hdr); skb_trim(skb2, data_len); + + if (unlikely(dst_mac_fixup)) + usbnet_cdc_zte_rx_fixup(dev, skb2); + usbnet_skb_return(dev, skb2); } /* caller will usbnet_skb_return the remaining packet */ + if (unlikely(dst_mac_fixup)) + usbnet_cdc_zte_rx_fixup(dev, skb); + return 1; } EXPORT_SYMBOL_GPL(rndis_rx_fixup); @@ -612,6 +619,17 @@ static const struct driver_info rndis_poll_status_info = { .tx_fixup = rndis_tx_fixup, }; +static const struct driver_info zte_rndis_info = { + .description = "ZTE RNDIS device", + .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .data = RNDIS_DRIVER_DATA_DST_MAC_FIXUP, + .bind = zte_rndis_bind, + .unbind = rndis_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, + .tx_fixup = rndis_tx_fixup, +}; + /*-------------------------------------------------------------------------*/ static const struct usb_device_id products [] = { @@ -621,6 +639,21 @@ static const struct usb_device_id products [] = { USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long) &rndis_poll_status_info, }, { + /* Hytera Communications DMR radios' "Radio to PC Network" */ + USB_VENDOR_AND_INTERFACE_INFO(0x238b, + USB_CLASS_COMM, 2 /* ACM */, 0x0ff), + .driver_info = (unsigned long)&rndis_info, +}, { + /* ZTE WWAN modules */ + USB_VENDOR_AND_INTERFACE_INFO(0x19d2, + USB_CLASS_WIRELESS_CONTROLLER, 1, 3), + .driver_info = (unsigned long)&zte_rndis_info, +}, { + /* ZTE WWAN modules, ACM flavour */ + USB_VENDOR_AND_INTERFACE_INFO(0x19d2, + USB_CLASS_COMM, 2 /* ACM */, 0x0ff), + .driver_info = (unsigned long)&zte_rndis_info, +}, { /* RNDIS is MSFT's un-official variant of CDC ACM */ USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), .driver_info = (unsigned long) &rndis_info, |