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envelope-from=i@zenithal.me; helo=JPN01-TYC-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" CCID could send zero-length packet (ZLP) if we invoke two data_in, two packets would be concated and we could not distinguish them. The CANOKEY_EMU_EP_CTAPHID is exported from canokey-qemu.h Reported-by: MkfsSion Signed-off-by: Hongren (Zenithal) Zheng --- hw/usb/canokey.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/hw/usb/canokey.c b/hw/usb/canokey.c index 4a08b1cbd7..86548923eb 100644 --- a/hw/usb/canokey.c +++ b/hw/usb/canokey.c @@ -109,11 +109,10 @@ int canokey_emu_transmit( * Note: this is a quirk for CanoKey CTAPHID * because it calls multiple emu_transmit in one device_loop * but w/o data_in it would stuck in device_loop - * This has no side effect for CCID as it is strictly - * OUT then IN transfer - * However it has side effect for Control transfer + * This has side effect for CCID since CCID can send ZLP + * This also has side effect for Control transfer */ - if (ep_in != 0) { + if (ep_in == CANOKEY_EMU_EP_CTAPHID) { canokey_emu_data_in(ep_in); } return 0; From patchwork Sun Jun 12 18:10:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongren Zheng X-Patchwork-Id: 1642571 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; 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envelope-from=i@zenithal.me; helo=JPN01-TYC-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" XHCI wont poll interrupt IN endpoint if NAKed, and needs wakeup Suggested-by: Gerd Hoffmann Signed-off-by: Hongren (Zenithal) Zheng --- hw/usb/canokey.c | 28 ++++++++++++++++++++++++++++ hw/usb/canokey.h | 1 + 2 files changed, 29 insertions(+) diff --git a/hw/usb/canokey.c b/hw/usb/canokey.c index 86548923eb..e5fa4a5ad2 100644 --- a/hw/usb/canokey.c +++ b/hw/usb/canokey.c @@ -103,6 +103,13 @@ int canokey_emu_transmit( pbuf, size); key->ep_in_size[ep_in] += size; key->ep_in_state[ep_in] = CANOKEY_EP_IN_READY; + /* + * wake up controller if we NAKed IN token before + * Note: this is a quirk for CanoKey CTAPHID + */ + if (ep_in == CANOKEY_EMU_EP_CTAPHID && + key->ep_in_pointer[ep_in] != NULL) + usb_wakeup(key->ep_in_pointer[ep_in], 0); /* * ready for more data in device loop * @@ -135,6 +142,7 @@ static void canokey_handle_reset(USBDevice *dev) key->ep_in_state[i] = CANOKEY_EP_IN_WAIT; key->ep_in_pos[i] = 0; key->ep_in_size[i] = 0; + key->ep_in_pointer[i] = NULL; } canokey_emu_reset(); } @@ -163,6 +171,8 @@ static void canokey_handle_control(USBDevice *dev, USBPacket *p, switch (key->ep_in_state[0]) { case CANOKEY_EP_IN_WAIT: p->status = USB_RET_NAK; + /* store pointer here for later emu_transmit wakeup */ + key->ep_in_pointer[0] = p->ep; break; case CANOKEY_EP_IN_STALL: p->status = USB_RET_STALL; @@ -208,6 +218,22 @@ static void canokey_handle_data(USBDevice *dev, USBPacket *p) key->ep_out_size[ep_out] = out_len; canokey_emu_data_out(ep_out, NULL); } + /* + * Note: this is a quirk for CanoKey CTAPHID + * + * There is one code path that uses this device loop + * INTR IN -> useful data_in and useless device_loop -> NAKed + * INTR OUT -> useful device loop -> transmit -> wakeup + * (this one thanks to both data_in and data_out being called) + * the next INTR IN -> actual data to guest + * + * if there is no such device loop, there would be no further + * INTR IN, no device loop, no transmit hence no usb_wakeup + * then qemu would hang + */ + if (ep_in == CANOKEY_EMU_EP_CTAPHID) { + canokey_emu_device_loop(); /* may call transmit multiple times */ + } break; case USB_TOKEN_IN: if (key->ep_in_pos[ep_in] == 0) { /* first time IN */ @@ -218,6 +244,8 @@ static void canokey_handle_data(USBDevice *dev, USBPacket *p) case CANOKEY_EP_IN_WAIT: /* NAK for early INTR IN */ p->status = USB_RET_NAK; + /* store pointer here for later emu_transmit wakeup */ + key->ep_in_pointer[ep_in] = p->ep; break; case CANOKEY_EP_IN_STALL: p->status = USB_RET_STALL; diff --git a/hw/usb/canokey.h b/hw/usb/canokey.h index 24cf304203..7261f81e80 100644 --- a/hw/usb/canokey.h +++ b/hw/usb/canokey.h @@ -55,6 +55,7 @@ typedef struct CanoKeyState { */ uint32_t ep_in_pos[CANOKEY_EP_NUM]; CanoKeyEPState ep_in_state[CANOKEY_EP_NUM]; + USBEndpoint *ep_in_pointer[CANOKEY_EP_NUM]; /* OUT pointer to canokey recv buffer */ uint8_t *ep_out[CANOKEY_EP_NUM]; From patchwork Sun Jun 12 18:10:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongren Zheng X-Patchwork-Id: 1642572 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=zenithal.me header.i=@zenithal.me header.a=rsa-sha256 header.s=selector1 header.b=FrtN0VCI; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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envelope-from=i@zenithal.me; helo=JPN01-TYC-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Hongren (Zenithal) Zheng --- docs/system/devices/canokey.rst | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/docs/system/devices/canokey.rst b/docs/system/devices/canokey.rst index 169f99b8eb..c2c58ae3e7 100644 --- a/docs/system/devices/canokey.rst +++ b/docs/system/devices/canokey.rst @@ -146,16 +146,6 @@ multiple CanoKey QEMU running, namely you can not Also, there is no lock on canokey-file, thus two CanoKey QEMU instance can not read one canokey-file at the same time. -Another limitation is that this device is not compatible with ``qemu-xhci``, -in that this device would hang when there are FIDO2 packets (traffic on -interrupt endpoints). If you do not use FIDO2 then it works as intended, -but for full functionality you should use old uhci/ehci bus and attach canokey -to it, for example - -.. parsed-literal:: - - |qemu_system| -device piix3-usb-uhci,id=uhci -device canokey,bus=uhci.0 - References ==========