| /linux/tools/testing/selftests/net/ |
| H A D | proc_net_pktgen.c | 111 int dev_fd; in FIXTURE() local
130 self->dev_fd = open("/proc/net/pktgen/lo@0", O_RDWR); in FIXTURE_SETUP()
131 ASSERT_GE(self->dev_fd, 0) TH_LOG("device entry for lo@0 missing?"); in FIXTURE_SETUP()
138 ret = close(self->dev_fd); in FIXTURE_TEARDOWN()
213 len = write(self->dev_fd, wrong_dev_cmd, i); in TEST_F()
223 len = write(self->dev_fd, dev_cmd_min_pkt_size_0, sizeof(dev_cmd_min_pkt_size_0)); in TEST_F()
227 len = write(self->dev_fd, dev_cmd_min_pkt_size_0, sizeof(dev_cmd_min_pkt_size_0) - 1); in TEST_F()
231 len = write(self->dev_fd, dev_cmd_min_pkt_size_1, sizeof(dev_cmd_min_pkt_size_1)); in TEST_F()
235 len = write(self->dev_fd, dev_cmd_min_pkt_size_1, sizeof(dev_cmd_min_pkt_size_1) - 1); in TEST_F()
239 len = write(self->dev_fd, dev_cmd_min_pkt_size_2, sizeof(dev_cmd_min_pkt_size_2)); in TEST_F()
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| /linux/tools/testing/selftests/nci/ |
| H A D | nci_dev.c | 324 int dev_fd; in virtual_dev_open() local
327 dev_fd = *(int *)data; in virtual_dev_open()
329 len = read(dev_fd, buf, 258); in virtual_dev_open()
336 write(dev_fd, nci_reset_rsp, sizeof(nci_reset_rsp)); in virtual_dev_open()
338 len = read(dev_fd, buf, 258); in virtual_dev_open()
345 write(dev_fd, nci_init_rsp, sizeof(nci_init_rsp)); in virtual_dev_open()
347 len = read(dev_fd, buf, 258); in virtual_dev_open()
354 write(dev_fd, nci_rf_disc_map_rsp, sizeof(nci_rf_disc_map_rsp)); in virtual_dev_open()
364 int dev_fd; in virtual_dev_open_v2() local
367 dev_fd = *(int *)data; in virtual_dev_open_v2()
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| /linux/Documentation/userspace-api/ |
| H A D | vduse.rst | 113 static int vduse_message_handler(int dev_fd)
119 len = read(dev_fd, &req, sizeof(req));
131 len = write(dev_fd, &resp, sizeof(resp));
185 static void *iova_to_va(int dev_fd, uint64_t iova, uint64_t *len)
199 fd = ioctl(dev_fd, VDUSE_IOTLB_GET_FD, &entry);
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| /linux/tools/testing/selftests/kvm/include/ |
| H A D | kvm_util.h | 860 int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr);
862 static inline void kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr) in kvm_has_device_attr() argument
864 int ret = __kvm_has_device_attr(dev_fd, group, attr); in kvm_has_device_attr()
869 int __kvm_device_attr_get(int dev_fd, uint32_t group, uint64_t attr, void *val);
871 static inline void kvm_device_attr_get(int dev_fd, uint32_t group, in kvm_device_attr_get() argument
874 int ret = __kvm_device_attr_get(dev_fd, group, attr, val); in kvm_device_attr_get()
879 int __kvm_device_attr_set(int dev_fd, uint32_t group, uint64_t attr, void *val);
881 static inline void kvm_device_attr_set(int dev_fd, uint32_t group, in kvm_device_attr_set() argument
884 int ret = __kvm_device_attr_set(dev_fd, group, attr, val); in kvm_device_attr_set()
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| /linux/tools/testing/selftests/kvm/lib/ |
| H A D | kvm_util.c | 1281 int dev_fd, ret; in vcpu_mmap_sz() local
1283 dev_fd = open_kvm_dev_path_or_exit(); in vcpu_mmap_sz()
1285 ret = ioctl(dev_fd, KVM_GET_VCPU_MMAP_SIZE, NULL); in vcpu_mmap_sz()
1289 close(dev_fd); in vcpu_mmap_sz()
1788 int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr) in __kvm_has_device_attr() argument
1796 return ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute); in __kvm_has_device_attr()
1823 int __kvm_device_attr_get(int dev_fd, uint32_t group, uint64_t attr, void *val) in __kvm_device_attr_get() argument
1832 return __kvm_ioctl(dev_fd, KVM_GET_DEVICE_ATTR, &kvmattr); in __kvm_device_attr_get()
1835 int __kvm_device_attr_set(int dev_fd, uint32_t group, uint64_t attr, void *val) in __kvm_device_attr_set() argument
1844 return __kvm_ioctl(dev_fd, KVM_SET_DEVICE_ATTR, &kvmattr); in __kvm_device_attr_set()
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| /linux/tools/testing/selftests/ublk/ |
| H A D | kublk.h | 298 int dev_fd = ublk_get_registered_fd(q, 0); in __io_uring_prep_buf_reg_unreg()
300 io_uring_prep_read(sqe, dev_fd, 0, 0, 0); in __io_uring_prep_buf_reg_unreg()
295 int dev_fd = ublk_get_registered_fd(q, 0); __io_uring_prep_buf_reg_unreg() local
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| /linux/Documentation/target/ |
| H A D | tcmu-design.rst | 308 int fd, dev_fd;
331 dev_fd = open("/dev/uio0", O_RDWR);
332 map = mmap(NULL, map_len, PROT_READ|PROT_WRITE, MAP_SHARED, dev_fd, 0);
340 int ret = read(dev_fd, buf, 4); /* will block */
342 handle_device_events(dev_fd, map);
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| /linux/Documentation/virt/kvm/ |
| H A D | api.rst | 194 vm_fd = ioctl(dev_fd, KVM_CREATE_VM, KVM_VM_TYPE_ARM_IPA_SIZE(48));
|