dev/virtio/base.cc

49       desc{0, 0, 0, 0}
68     desc = std::move(rhs.desc);
82     const Addr desc_addr(vq_addr + sizeof(desc) * _index);
85     desc = vtoh_legacy(guest_desc);
89             _index, desc.addr, desc.len, desc.flags, desc.next);
95     VirtDescriptor *desc(this);
97         desc->update();
98     } while ((desc = desc->next()) != NULL && desc != this);
100     if (desc == this)
112             _index, desc.addr, desc.len, desc.flags, desc.next);
115         uint8_t data[desc.len];
116         read(0, data, desc.len);
117         DDUMP(VIO, data, desc.len);
127     const VirtDescriptor *desc(this);
129         desc->dump();
130     } while ((desc = desc->next()) != NULL);
137         return queue->getDescriptor(desc.next);
147             this, desc.addr, desc.len, offset, (long)dst, size);
148     assert(size <= desc.len - offset);
152     memProxy->readBlob(desc.addr + offset, dst, size);
159             this, desc.addr, desc.len, offset, (long)src, size);
160     assert(size <= desc.len - offset);
164     memProxy->writeBlob(desc.addr + offset, src, size);
170     const VirtDescriptor *desc(this);
173         if (offset < desc->size()) {
174             const size_t chunk_size(std::min(desc->size() - offset, size));
175             desc->read(offset, dst, chunk_size);
180             offset -= desc->size();
182     } while ((desc = desc->next()) != NULL && desc->isIncoming() && size > 0);
193     VirtDescriptor *desc(this);
196         if (offset < desc->size()) {
197             const size_t chunk_size(std::min(desc->size() - offset, size));
198             desc->write(offset, src, chunk_size);
203             offset -= desc->size();
205     } while ((desc = desc->next()) != NULL && size > 0);
217     const VirtDescriptor *desc(this);
219         size += desc->size();
220     } while ((desc = desc->next()) != NULL);
290 VirtQueue::produceDescriptor(VirtDescriptor *desc, uint32_t len)
294             desc->index(), len, used.header.index);
297     e.id = desc->index();