1 /*- 2 * Copyright (c) 1990, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from the Stanford/CMU enet packet filter, 6 * (net/enet.c) distributed as part of 4.3BSD, and code contributed 7 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence 8 * Berkeley Laboratory. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 #include <sys/param.h> 38 #include <sys/kernel.h> 39 #include <sys/bus.h> 40 #include <sys/fcntl.h> 41 #include <sys/malloc.h> 42 #include <sys/proc.h> 43 #include <sys/socket.h> 44 #include <sys/sockio.h> 45 #include <net/if.h> 46 #include <net/if_types.h> 47 #include <net/bpf.h> 48 49 #include <dev/usb/usb.h> 50 #include <dev/usb/usbdi.h> 51 #include <dev/usb/usb_busdma.h> 52 #include <dev/usb/usb_controller.h> 53 #include <dev/usb/usb_core.h> 54 #include <dev/usb/usb_process.h> 55 #include <dev/usb/usb_device.h> 56 #include <dev/usb/usb_bus.h> 57 #include <dev/usb/usb_pf.h> 58 #include <dev/usb/usb_transfer.h> 59 60 void 61 usbpf_attach(struct usb_bus *ubus) 62 { 63 struct ifnet *ifp; 64 65 ifp = ubus->ifp = if_alloc(IFT_USB); 66 if_initname(ifp, "usbus", device_get_unit(ubus->bdev)); 67 if_attach(ifp); 68 69 KASSERT(sizeof(struct usbpf_pkthdr) == USBPF_HDR_LEN, 70 ("wrong USB pf header length (%zd)", sizeof(struct usbpf_pkthdr))); 71 72 /* 73 * XXX According to the specification of DLT_USB, it indicates packets 74 * beginning with USB setup header. But not sure all packets would be. 75 */ 76 bpfattach(ifp, DLT_USB, USBPF_HDR_LEN); 77 78 if (bootverbose) 79 device_printf(ubus->parent, "usbpf attached\n"); 80 } 81 82 void 83 usbpf_detach(struct usb_bus *ubus) 84 { 85 struct ifnet *ifp = ubus->ifp; 86 87 if (ifp != NULL) { 88 bpfdetach(ifp); 89 if_detach(ifp); 90 if_free(ifp); 91 } 92 ubus->ifp = NULL; 93 } 94 95 static uint32_t 96 usbpf_aggregate_xferflags(struct usb_xfer_flags *flags) 97 { 98 uint32_t val = 0; 99 100 if (flags->force_short_xfer == 1) 101 val |= USBPF_FLAG_FORCE_SHORT_XFER; 102 if (flags->short_xfer_ok == 1) 103 val |= USBPF_FLAG_SHORT_XFER_OK; 104 if (flags->short_frames_ok == 1) 105 val |= USBPF_FLAG_SHORT_FRAMES_OK; 106 if (flags->pipe_bof == 1) 107 val |= USBPF_FLAG_PIPE_BOF; 108 if (flags->proxy_buffer == 1) 109 val |= USBPF_FLAG_PROXY_BUFFER; 110 if (flags->ext_buffer == 1) 111 val |= USBPF_FLAG_EXT_BUFFER; 112 if (flags->manual_status == 1) 113 val |= USBPF_FLAG_MANUAL_STATUS; 114 if (flags->no_pipe_ok == 1) 115 val |= USBPF_FLAG_NO_PIPE_OK; 116 if (flags->stall_pipe == 1) 117 val |= USBPF_FLAG_STALL_PIPE; 118 return (val); 119 } 120 121 static uint32_t 122 usbpf_aggregate_status(struct usb_xfer_flags_int *flags) 123 { 124 uint32_t val = 0; 125 126 if (flags->open == 1) 127 val |= USBPF_STATUS_OPEN; 128 if (flags->transferring == 1) 129 val |= USBPF_STATUS_TRANSFERRING; 130 if (flags->did_dma_delay == 1) 131 val |= USBPF_STATUS_DID_DMA_DELAY; 132 if (flags->did_close == 1) 133 val |= USBPF_STATUS_DID_CLOSE; 134 if (flags->draining == 1) 135 val |= USBPF_STATUS_DRAINING; 136 if (flags->started == 1) 137 val |= USBPF_STATUS_STARTED; 138 if (flags->bandwidth_reclaimed == 1) 139 val |= USBPF_STATUS_BW_RECLAIMED; 140 if (flags->control_xfr == 1) 141 val |= USBPF_STATUS_CONTROL_XFR; 142 if (flags->control_hdr == 1) 143 val |= USBPF_STATUS_CONTROL_HDR; 144 if (flags->control_act == 1) 145 val |= USBPF_STATUS_CONTROL_ACT; 146 if (flags->control_stall == 1) 147 val |= USBPF_STATUS_CONTROL_STALL; 148 if (flags->short_frames_ok == 1) 149 val |= USBPF_STATUS_SHORT_FRAMES_OK; 150 if (flags->short_xfer_ok == 1) 151 val |= USBPF_STATUS_SHORT_XFER_OK; 152 #if USB_HAVE_BUSDMA 153 if (flags->bdma_enable == 1) 154 val |= USBPF_STATUS_BDMA_ENABLE; 155 if (flags->bdma_no_post_sync == 1) 156 val |= USBPF_STATUS_BDMA_NO_POST_SYNC; 157 if (flags->bdma_setup == 1) 158 val |= USBPF_STATUS_BDMA_SETUP; 159 #endif 160 if (flags->isochronous_xfr == 1) 161 val |= USBPF_STATUS_ISOCHRONOUS_XFR; 162 if (flags->curr_dma_set == 1) 163 val |= USBPF_STATUS_CURR_DMA_SET; 164 if (flags->can_cancel_immed == 1) 165 val |= USBPF_STATUS_CAN_CANCEL_IMMED; 166 if (flags->doing_callback == 1) 167 val |= USBPF_STATUS_DOING_CALLBACK; 168 169 return (val); 170 } 171 172 void 173 usbpf_xfertap(struct usb_xfer *xfer, int type) 174 { 175 struct usb_endpoint *ep = xfer->endpoint; 176 struct usb_page_search res; 177 struct usb_xfer_root *info = xfer->xroot; 178 struct usb_bus *bus = info->bus; 179 struct usbpf_pkthdr *up; 180 usb_frlength_t isoc_offset = 0; 181 int i; 182 char *buf, *ptr, *end; 183 184 if (!bpf_peers_present(bus->ifp->if_bpf)) 185 return; 186 187 /* 188 * XXX TODO 189 * Allocating the buffer here causes copy operations twice what's 190 * really inefficient. Copying usbpf_pkthdr and data is for USB packet 191 * read filter to pass a virtually linear buffer. 192 */ 193 buf = ptr = malloc(sizeof(struct usbpf_pkthdr) + (USB_PAGE_SIZE * 5), 194 M_TEMP, M_NOWAIT); 195 if (buf == NULL) { 196 printf("usbpf_xfertap: out of memory\n"); /* XXX */ 197 return; 198 } 199 end = buf + sizeof(struct usbpf_pkthdr) + (USB_PAGE_SIZE * 5); 200 201 bzero(ptr, sizeof(struct usbpf_pkthdr)); 202 up = (struct usbpf_pkthdr *)ptr; 203 up->up_busunit = htole32(device_get_unit(bus->bdev)); 204 up->up_type = type; 205 up->up_xfertype = ep->edesc->bmAttributes & UE_XFERTYPE; 206 up->up_address = xfer->address; 207 up->up_endpoint = xfer->endpointno; 208 up->up_flags = htole32(usbpf_aggregate_xferflags(&xfer->flags)); 209 up->up_status = htole32(usbpf_aggregate_status(&xfer->flags_int)); 210 switch (type) { 211 case USBPF_XFERTAP_SUBMIT: 212 up->up_length = htole32(xfer->sumlen); 213 up->up_frames = htole32(xfer->nframes); 214 break; 215 case USBPF_XFERTAP_DONE: 216 up->up_length = htole32(xfer->actlen); 217 up->up_frames = htole32(xfer->aframes); 218 break; 219 default: 220 panic("wrong usbpf type (%d)", type); 221 } 222 223 up->up_error = htole32(xfer->error); 224 up->up_interval = htole32(xfer->interval); 225 ptr += sizeof(struct usbpf_pkthdr); 226 227 for (i = 0; i < up->up_frames; i++) { 228 if (ptr + sizeof(u_int32_t) >= end) 229 goto done; 230 *((u_int32_t *)ptr) = htole32(xfer->frlengths[i]); 231 ptr += sizeof(u_int32_t); 232 233 if (ptr + xfer->frlengths[i] >= end) 234 goto done; 235 if (xfer->flags_int.isochronous_xfr == 1) { 236 usbd_get_page(&xfer->frbuffers[0], isoc_offset, &res); 237 isoc_offset += xfer->frlengths[i]; 238 } else 239 usbd_get_page(&xfer->frbuffers[i], 0, &res); 240 bcopy(res.buffer, ptr, xfer->frlengths[i]); 241 ptr += xfer->frlengths[i]; 242 } 243 244 bpf_tap(bus->ifp->if_bpf, buf, ptr - buf); 245 done: 246 free(buf, M_TEMP); 247 } 248