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helo=mx0a-002c1b01.pphosted.com","X-Spam_score_int":"-32","X-Spam_score":"-3.3","X-Spam_bar":"---","X-Spam_report":"(-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001,\n RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 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":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Plumb through vfio_device_get_feature to the vfio-user server. Note that\nwe translate EINVAL into ENOTTY, as the existing generic vfio code is\nexpecting the latter to mean \"unsupported\".\n\nAs part of adding a trace point, clean up the trace file.\n\nSigned-off-by: John Levon \n---\n hw/vfio-user/protocol.h | 12 +++++++++++\n hw/vfio-user/device.c | 42 +++++++++++++++++++++++++++++++++++++++\n hw/vfio-user/trace-events | 23 +++++++++++----------\n 3 files changed, 67 insertions(+), 10 deletions(-)","diff":"diff --git a/hw/vfio-user/protocol.h b/hw/vfio-user/protocol.h\nindex 3249a4a6b6..2a0c31e7c5 100644\n--- a/hw/vfio-user/protocol.h\n+++ b/hw/vfio-user/protocol.h\n@@ -40,6 +40,7 @@ enum vfio_user_command {\n VFIO_USER_DEVICE_RESET = 13,\n VFIO_USER_DIRTY_PAGES = 14,\n VFIO_USER_REGION_WRITE_MULTI = 15,\n+ VFIO_USER_DEVICE_FEATURE = 16,\n VFIO_USER_MAX,\n };\n \n@@ -239,4 +240,15 @@ typedef struct {\n VFIOUserWROne wrs[VFIO_USER_MULTI_MAX];\n } VFIOUserWRMulti;\n \n+/*\n+ * VFIO_USER_DEVICE_FEATURE\n+ * imported from struct vfio_device_feature\n+ */\n+typedef struct {\n+ VFIOUserHdr hdr;\n+ uint32_t argsz;\n+ uint32_t flags;\n+ char data[];\n+} VFIOUserDeviceFeature;\n+\n #endif /* VFIO_USER_PROTOCOL_H */\ndiff --git a/hw/vfio-user/device.c b/hw/vfio-user/device.c\nindex 64ef35b320..b8d2b7c1a8 100644\n--- a/hw/vfio-user/device.c\n+++ b/hw/vfio-user/device.c\n@@ -74,6 +74,47 @@ void vfio_user_device_reset(VFIOUserProxy *proxy)\n }\n }\n \n+static int\n+vfio_user_device_io_device_feature(VFIODevice *vbasedev,\n+ struct vfio_device_feature *feature)\n+{\n+ g_autofree VFIOUserDeviceFeature *msgp = NULL;\n+ int size = sizeof(VFIOUserHdr) + feature->argsz;\n+ VFIOUserProxy *proxy = vbasedev->proxy;\n+ Error *local_err = NULL;\n+\n+ msgp = g_malloc0(size);\n+\n+ vfio_user_request_msg(&msgp->hdr, VFIO_USER_DEVICE_FEATURE, size, 0);\n+\n+ memcpy(&msgp->argsz, &feature->argsz, feature->argsz);\n+\n+ if (!vfio_user_send_wait(proxy, &msgp->hdr, NULL, size, &local_err)) {\n+ error_prepend(&local_err, \"%s: \", __func__);\n+ error_report_err(local_err);\n+ return -EFAULT;\n+ }\n+\n+ if (msgp->hdr.flags & VFIO_USER_ERROR) {\n+ /*\n+ * Client expects ENOTTY for \"not supported\", but the protocol may\n+ * return EINVAL (which should only occur in the case the feature isn't\n+ * actually supported on the server).\n+ */\n+ if (msgp->hdr.error_reply == EINVAL) {\n+ return -ENOTTY;\n+ }\n+\n+ return -msgp->hdr.error_reply;\n+ }\n+\n+ memcpy(feature, &msgp->argsz, feature->argsz);\n+\n+ trace_vfio_user_device_io_device_feature(msgp->argsz, msgp->flags);\n+\n+ return 0;\n+}\n+\n static int vfio_user_get_region_info(VFIOUserProxy *proxy,\n struct vfio_region_info *info,\n VFIOUserFDs *fds)\n@@ -432,6 +473,7 @@ static int vfio_user_device_io_region_write(VFIODevice *vbasedev, uint8_t index,\n * Socket-based io_ops\n */\n VFIODeviceIOOps vfio_user_device_io_ops_sock = {\n+ .device_feature = vfio_user_device_io_device_feature,\n .get_region_info = vfio_user_device_io_get_region_info,\n .get_irq_info = vfio_user_device_io_get_irq_info,\n .set_irqs = vfio_user_device_io_set_irqs,\ndiff --git a/hw/vfio-user/trace-events b/hw/vfio-user/trace-events\nindex abb67f4c11..503e1c82d4 100644\n--- a/hw/vfio-user/trace-events\n+++ b/hw/vfio-user/trace-events\n@@ -2,19 +2,22 @@\n #\n # SPDX-License-Identifier: GPL-2.0-or-later\n \n-# common.c\n+# container.c\n+vfio_user_dma_map(uint64_t iova, uint64_t size, uint64_t off, uint32_t flags, bool async_ops) \" iova 0x%\"PRIx64\" size 0x%\"PRIx64\" off 0x%\"PRIx64\" flags 0x%x async_ops %d\"\n+vfio_user_dma_unmap(uint64_t iova, uint64_t size, uint32_t flags, bool async_ops) \" iova 0x%\"PRIx64\" size 0x%\"PRIx64\" flags 0x%x async_ops %d\"\n+\n+# device.c\n+vfio_user_device_io_device_feature(uint32_t argsz, uint32_t flags) \" argsz 0x%x flags 0x%x\"\n+vfio_user_get_info(uint32_t nregions, uint32_t nirqs) \" #regions %d #irqs %d\"\n+vfio_user_get_irq_info(uint32_t index, uint32_t flags, uint32_t count) \" index %d flags 0x%x count %d\"\n+vfio_user_set_irqs(uint32_t index, uint32_t start, uint32_t count, uint32_t flags) \" index %d start %d count %d flags 0x%x\"\n+vfio_user_get_region_info(uint32_t index, uint32_t flags, uint64_t size) \" index %d flags 0x%x size 0x%\"PRIx64\n+vfio_user_region_rw(uint32_t region, uint64_t off, uint32_t count) \" region %d offset 0x%\"PRIx64\" count %d\"\n+\n+# proxy.c\n vfio_user_recv_hdr(const char *name, uint16_t id, uint16_t cmd, uint32_t size, uint32_t flags) \" (%s) id 0x%x cmd 0x%x size 0x%x flags 0x%x\"\n vfio_user_recv_read(uint16_t id, int read) \" id 0x%x read 0x%x\"\n vfio_user_recv_request(uint16_t cmd) \" command 0x%x\"\n vfio_user_send_write(uint16_t id, int wrote) \" id 0x%x wrote 0x%x\"\n vfio_user_version(uint16_t major, uint16_t minor, const char *caps) \" major %d minor %d caps: %s\"\n-vfio_user_get_info(uint32_t nregions, uint32_t nirqs) \" #regions %d #irqs %d\"\n-vfio_user_get_region_info(uint32_t index, uint32_t flags, uint64_t size) \" index %d flags 0x%x size 0x%\"PRIx64\n-vfio_user_region_rw(uint32_t region, uint64_t off, uint32_t count) \" region %d offset 0x%\"PRIx64\" count %d\"\n-vfio_user_get_irq_info(uint32_t index, uint32_t flags, uint32_t count) \" index %d flags 0x%x count %d\"\n-vfio_user_set_irqs(uint32_t index, uint32_t start, uint32_t count, uint32_t flags) \" index %d start %d count %d flags 0x%x\"\n vfio_user_wrmulti(const char *s, uint64_t wr_cnt) \" %s count 0x%\"PRIx64\n-\n-# container.c\n-vfio_user_dma_map(uint64_t iova, uint64_t size, uint64_t off, uint32_t flags, bool async_ops) \" iova 0x%\"PRIx64\" size 0x%\"PRIx64\" off 0x%\"PRIx64\" flags 0x%x async_ops %d\"\n-vfio_user_dma_unmap(uint64_t iova, uint64_t size, uint32_t flags, bool async_ops) \" iova 0x%\"PRIx64\" size 0x%\"PRIx64\" flags 0x%x async_ops %d\"\n","prefixes":["v2","1/3"]}