static int efinet_get(struct iodesc *desc, void *pkt, size_t len, time_t timeout) { struct netif *nif = desc->io_netif; EFI_SIMPLE_NETWORK *net; EFI_STATUS status; UINTN bufsz; time_t t; char buf[2048]; net = nif->nif_devdata; t = time(0); while ((time(0) - t) < timeout) { bufsz = sizeof(buf); status = net->Receive(net, 0, &bufsz, buf, 0, 0, 0); if (status == EFI_SUCCESS) { /* * XXX EFI1.1 and the E1000 card trash our * workspace if we do not do this silly copy. * Either they are not respecting the len * value or do not like the alignment. */ if (bufsz > len) bufsz = len; bcopy(buf, pkt, bufsz); return (bufsz); } if (status != EFI_NOT_READY) return (0); } return (0); }
static ssize_t efinet_get(struct iodesc *desc, void **pkt, time_t timeout) { struct netif *nif = desc->io_netif; EFI_SIMPLE_NETWORK *net; EFI_STATUS status; UINTN bufsz; time_t t; char *buf, *ptr; ssize_t ret = -1; net = nif->nif_devdata; if (net == NULL) return (ret); bufsz = net->Mode->MaxPacketSize + ETHER_HDR_LEN + ETHER_CRC_LEN; buf = malloc(bufsz + ETHER_ALIGN); if (buf == NULL) return (ret); ptr = buf + ETHER_ALIGN; t = getsecs(); while ((getsecs() - t) < timeout) { status = net->Receive(net, NULL, &bufsz, ptr, NULL, NULL, NULL); if (status == EFI_SUCCESS) { *pkt = buf; ret = (ssize_t)bufsz; break; } if (status != EFI_NOT_READY) break; } if (ret == -1) free(buf); return (ret); }