/* * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator * * PAPR Inter-VM Logical Lan, aka ibmveth * * Copyright (c) 2010,2011 David Gibson, IBM Corporation. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * */ #include "qemu/osdep.h" #include "cpu.h" #include "qemu/log.h" #include "qemu/module.h" #include "net/net.h" #include "migration/vmstate.h" #include "hw/ppc/spapr.h" #include "hw/ppc/spapr_vio.h" #include "hw/qdev-properties.h" #include "sysemu/sysemu.h" #include "trace.h" #include #include "qom/object.h" #define ETH_ALEN 6 #define MAX_PACKET_SIZE 65536 /* Compatibility flags for migration */ #define SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT 0 #define SPAPRVLAN_FLAG_RX_BUF_POOLS (1 << SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT) /* * Virtual LAN device */ typedef uint64_t vlan_bd_t; #define VLAN_BD_VALID 0x8000000000000000ULL #define VLAN_BD_TOGGLE 0x4000000000000000ULL #define VLAN_BD_NO_CSUM 0x0200000000000000ULL #define VLAN_BD_CSUM_GOOD 0x0100000000000000ULL #define VLAN_BD_LEN_MASK 0x00ffffff00000000ULL #define VLAN_BD_LEN(bd) (((bd) & VLAN_BD_LEN_MASK) >> 32) #define VLAN_BD_ADDR_MASK 0x00000000ffffffffULL #define VLAN_BD_ADDR(bd) ((bd) & VLAN_BD_ADDR_MASK) #define VLAN_VALID_BD(addr, len) (VLAN_BD_VALID | \ (((len) << 32) & VLAN_BD_LEN_MASK) | \ (addr & VLAN_BD_ADDR_MASK)) #define VLAN_RXQC_TOGGLE 0x80 #define VLAN_RXQC_VALID 0x40 #define VLAN_RXQC_NO_CSUM 0x02 #define VLAN_RXQC_CSUM_GOOD 0x01 #define VLAN_RQ_ALIGNMENT 16 #define VLAN_RXQ_BD_OFF 0 #define VLAN_FILTER_BD_OFF 8 #define VLAN_RX_BDS_OFF 16 /* * The final 8 bytes of the buffer list is a counter of frames dropped * because there was not a buffer in the buffer list capable of holding * the frame. We must avoid it, or the operating system will report garbage * for this statistic. */ #define VLAN_RX_BDS_LEN (SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF - 8) #define VLAN_MAX_BUFS (VLAN_RX_BDS_LEN / 8) #define TYPE_VIO_SPAPR_VLAN_DEVICE "spapr-vlan" typedef struct SpaprVioVlan SpaprVioVlan; #define VIO_SPAPR_VLAN_DEVICE(obj) \ OBJECT_CHECK(SpaprVioVlan, (obj), TYPE_VIO_SPAPR_VLAN_DEVICE) #define RX_POOL_MAX_BDS 4096 #define RX_MAX_POOLS 5 typedef struct { int32_t bufsize; int32_t count; vlan_bd_t bds[RX_POOL_MAX_BDS]; } RxBufPool; struct SpaprVioVlan { SpaprVioDevice sdev; NICConf nicconf; NICState *nic; MACAddr perm_mac; bool isopen; hwaddr buf_list; uint32_t add_buf_ptr, use_buf_ptr, rx_bufs; hwaddr rxq_ptr; QEMUTimer *rxp_timer; uint32_t compat_flags; /* Compatibility flags for migration */ RxBufPool *rx_pool[RX_MAX_POOLS]; /* Receive buffer descriptor pools */ }; static bool spapr_vlan_can_receive(NetClientState *nc) { SpaprVioVlan *dev = qemu_get_nic_opaque(nc); return dev->isopen && dev->rx_bufs > 0; } /** * The last 8 bytes of the receive buffer list page (that has been * supplied by the guest with the H_REGISTER_LOGICAL_LAN call) contain * a counter for frames that have been dropped because there was no * suitable receive buffer available. This function is used to increase * this counter by one. */ static void spapr_vlan_record_dropped_rx_frame(SpaprVioVlan *dev) { uint64_t cnt; cnt = vio_ldq(&dev->sdev, dev->buf_list + 4096 - 8); vio_stq(&dev->sdev, dev->buf_list + 4096 - 8, cnt + 1); } /** * Get buffer descriptor from one of our receive buffer pools */ static vlan_bd_t spapr_vlan_get_rx_bd_from_pool(SpaprVioVlan *dev, size_t size) { vlan_bd_t bd; int pool; for (pool = 0; pool < RX_MAX_POOLS; pool++) { if (dev->rx_pool[pool]->count > 0 && dev->rx_pool[pool]->bufsize >= size + 8) { break; } } if (pool == RX_MAX_POOLS) { /* Failed to find a suitable buffer */ return 0; } trace_spapr_vlan_get_rx_bd_from_pool_found(pool, dev->rx_pool[pool]->count, dev->rx_bufs); /* Remove the buffer from the pool */ dev->rx_pool[pool]->count--; bd = dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count]; dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count] = 0; return bd; } /** * Get buffer descriptor from the receive buffer list page that has been * supplied by the guest with the H_REGISTER_LOGICAL_LAN call */ static vlan_bd_t spapr_vlan_get_rx_bd_from_page(SpaprVioVlan *dev, size_t size) { int buf_ptr = dev->use_buf_ptr; vlan_bd_t bd; do { buf_ptr += 8; if (buf_ptr >= VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF) { buf_ptr = VLAN_RX_BDS_OFF; } bd = vio_ldq(&dev->sdev, dev->buf_list + buf_ptr); trace_spapr_vlan_get_rx_bd_from_page(buf_ptr, (uint64_t)bd); } while ((!(bd & VLAN_BD_VALID) || VLAN_BD_LEN(bd) < size + 8) && buf_ptr != dev->use_buf_ptr); if (!(bd & VLAN_BD_VALID) || VLAN_BD_LEN(bd) < size + 8) { /* Failed to find a suitable buffer */ return 0; } /* Remove the buffer from the pool */ dev->use_buf_ptr = buf_ptr; vio_stq(&dev->sdev, dev->buf_list + dev->use_buf_ptr, 0); trace_spapr_vlan_get_rx_bd_from_page_found(dev->use_buf_ptr, dev->rx_bufs); return bd; } static ssize_t spapr_vlan_receive(NetClientState *nc, const uint8_t *buf, size_t size) { SpaprVioVlan *dev = qemu_get_nic_opaque(nc); SpaprVioDevice *sdev = VIO_SPAPR_DEVICE(dev); vlan_bd_t rxq_bd = vio_ldq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF); vlan_bd_t bd; uint64_t handle; uint8_t control; trace_spapr_vlan_receive(sdev->qdev.id, dev->rx_bufs); if (!dev->isopen) { return -1; } if (!dev->rx_bufs) { spapr_vlan_record_dropped_rx_frame(dev); return 0; } if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { bd = spapr_vlan_get_rx_bd_from_pool(dev, size); } else { bd = spapr_vlan_get_rx_bd_from_page(dev, size); } if (!bd) { spapr_vlan_record_dropped_rx_frame(dev); return 0; } dev->rx_bufs--; /* Transfer the packet data */ if (spapr_vio_dma_write(sdev, VLAN_BD_ADDR(bd) + 8, buf, size) < 0) { return -1; } trace_spapr_vlan_receive_dma_completed(); /* Update the receive queue */ control = VLAN_RXQC_TOGGLE | VLAN_RXQC_VALID; if (rxq_bd & VLAN_BD_TOGGLE) { control ^= VLAN_RXQC_TOGGLE; } handle = vio_ldq(sdev, VLAN_BD_ADDR(bd)); vio_stq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 8, handle); vio_stl(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 4, size); vio_sth(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 2, 8); vio_stb(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr, control); trace_spapr_vlan_receive_wrote(dev->rxq_ptr, vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr), vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 8)); dev->rxq_ptr += 16; if (dev->rxq_ptr >= VLAN_BD_LEN(rxq_bd)) { dev->rxq_ptr = 0; vio_stq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF, rxq_bd ^ VLAN_BD_TOGGLE); } if (sdev->signal_state & 1) { spapr_vio_irq_pulse(sdev); } return size; } static NetClientInfo net_spapr_vlan_info = { .type = NET_CLIENT_DRIVER_NIC, .size = sizeof(NICState), .can_receive = spapr_vlan_can_receive, .receive = spapr_vlan_receive, }; static void spapr_vlan_flush_rx_queue(void *opaque) { SpaprVioVlan *dev = opaque; qemu_flush_queued_packets(qemu_get_queue(dev->nic)); } static void spapr_vlan_reset_rx_pool(RxBufPool *rxp) { /* * Use INT_MAX as bufsize so that unused buffers are moved to the end * of the list during the qsort in spapr_vlan_add_rxbuf_to_pool() later. */ rxp->bufsize = INT_MAX; rxp->count = 0; memset(rxp->bds, 0, sizeof(rxp->bds)); } static void spapr_vlan_reset(SpaprVioDevice *sdev) { SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); int i; dev->buf_list = 0; dev->rx_bufs = 0; dev->isopen = 0; if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { for (i = 0; i < RX_MAX_POOLS; i++) { spapr_vlan_reset_rx_pool(dev->rx_pool[i]); } } memcpy(&dev->nicconf.macaddr.a, &dev->perm_mac.a, sizeof(dev->nicconf.macaddr.a)); qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); } static void spapr_vlan_realize(SpaprVioDevice *sdev, Error **errp) { SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); qemu_macaddr_default_if_unset(&dev->nicconf.macaddr); memcpy(&dev->perm_mac.a, &dev->nicconf.macaddr.a, sizeof(dev->perm_mac.a)); dev->nic = qemu_new_nic(&net_spapr_vlan_info, &dev->nicconf, object_get_typename(OBJECT(sdev)), sdev->qdev.id, dev); qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); dev->rxp_timer = timer_new_us(QEMU_CLOCK_VIRTUAL, spapr_vlan_flush_rx_queue, dev); } static void spapr_vlan_instance_init(Object *obj) { SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(obj); int i; device_add_bootindex_property(obj, &dev->nicconf.bootindex, "bootindex", "", DEVICE(dev)); if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { for (i = 0; i < RX_MAX_POOLS; i++) { dev->rx_pool[i] = g_new(RxBufPool, 1); spapr_vlan_reset_rx_pool(dev->rx_pool[i]); } } } static void spapr_vlan_instance_finalize(Object *obj) { SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(obj); int i; if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { for (i = 0; i < RX_MAX_POOLS; i++) { g_free(dev->rx_pool[i]); dev->rx_pool[i] = NULL; } } if (dev->rxp_timer) { timer_del(dev->rxp_timer); timer_free(dev->rxp_timer); } } void spapr_vlan_create(SpaprVioBus *bus, NICInfo *nd) { DeviceState *dev; dev = qdev_new("spapr-vlan"); qdev_set_nic_properties(dev, nd); qdev_realize_and_unref(dev, &bus->bus, &error_fatal); } static int spapr_vlan_devnode(SpaprVioDevice *dev, void *fdt, int node_off) { SpaprVioVlan *vdev = VIO_SPAPR_VLAN_DEVICE(dev); uint8_t padded_mac[8] = {0, 0}; int ret; /* Some old phyp versions give the mac address in an 8-byte * property. The kernel driver (before 3.10) has an insane workaround; * rather than doing the obvious thing and checking the property * length, it checks whether the first byte has 0b10 in the low * bits. If a correct 6-byte property has a different first byte * the kernel will get the wrong mac address, overrunning its * buffer in the process (read only, thank goodness). * * Here we return a 6-byte address unless that would break a pre-3.10 * driver. In that case we return a padded 8-byte address to allow the old * workaround to succeed. */ if ((vdev->nicconf.macaddr.a[0] & 0x3) == 0x2) { ret = fdt_setprop(fdt, node_off, "local-mac-address", &vdev->nicconf.macaddr, ETH_ALEN); } else { memcpy(&padded_mac[2], &vdev->nicconf.macaddr, ETH_ALEN); ret = fdt_setprop(fdt, node_off, "local-mac-address", padded_mac, sizeof(padded_mac)); } if (ret < 0) { return ret; } ret = fdt_setprop_cell(fdt, node_off, "ibm,mac-address-filters", 0); if (ret < 0) { return ret; } return 0; } static int check_bd(SpaprVioVlan *dev, vlan_bd_t bd, target_ulong alignment) { if ((VLAN_BD_ADDR(bd) % alignment) || (VLAN_BD_LEN(bd) % alignment)) { return -1; } if (!spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd), VLAN_BD_LEN(bd), DMA_DIRECTION_FROM_DEVICE) || !spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd), VLAN_BD_LEN(bd), DMA_DIRECTION_TO_DEVICE)) { return -1; } return 0; } static target_ulong h_register_logical_lan(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; target_ulong buf_list = args[1]; target_ulong rec_queue = args[2]; target_ulong filter_list = args[3]; SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); vlan_bd_t filter_list_bd; if (!dev) { return H_PARAMETER; } if (dev->isopen) { hcall_dprintf("H_REGISTER_LOGICAL_LAN called twice without " "H_FREE_LOGICAL_LAN\n"); return H_RESOURCE; } if (check_bd(dev, VLAN_VALID_BD(buf_list, SPAPR_TCE_PAGE_SIZE), SPAPR_TCE_PAGE_SIZE) < 0) { hcall_dprintf("Bad buf_list 0x" TARGET_FMT_lx "\n", buf_list); return H_PARAMETER; } filter_list_bd = VLAN_VALID_BD(filter_list, SPAPR_TCE_PAGE_SIZE); if (check_bd(dev, filter_list_bd, SPAPR_TCE_PAGE_SIZE) < 0) { hcall_dprintf("Bad filter_list 0x" TARGET_FMT_lx "\n", filter_list); return H_PARAMETER; } if (!(rec_queue & VLAN_BD_VALID) || (check_bd(dev, rec_queue, VLAN_RQ_ALIGNMENT) < 0)) { hcall_dprintf("Bad receive queue\n"); return H_PARAMETER; } dev->buf_list = buf_list; sdev->signal_state = 0; rec_queue &= ~VLAN_BD_TOGGLE; /* Initialize the buffer list */ vio_stq(sdev, buf_list, rec_queue); vio_stq(sdev, buf_list + 8, filter_list_bd); spapr_vio_dma_set(sdev, buf_list + VLAN_RX_BDS_OFF, 0, SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF); dev->add_buf_ptr = VLAN_RX_BDS_OFF - 8; dev->use_buf_ptr = VLAN_RX_BDS_OFF - 8; dev->rx_bufs = 0; dev->rxq_ptr = 0; /* Initialize the receive queue */ spapr_vio_dma_set(sdev, VLAN_BD_ADDR(rec_queue), 0, VLAN_BD_LEN(rec_queue)); dev->isopen = 1; qemu_flush_queued_packets(qemu_get_queue(dev->nic)); return H_SUCCESS; } static target_ulong h_free_logical_lan(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); if (!dev) { return H_PARAMETER; } if (!dev->isopen) { hcall_dprintf("H_FREE_LOGICAL_LAN called without " "H_REGISTER_LOGICAL_LAN\n"); return H_RESOURCE; } spapr_vlan_reset(sdev); return H_SUCCESS; } /** * Used for qsort, this function compares two RxBufPools by size. */ static int rx_pool_size_compare(const void *p1, const void *p2) { const RxBufPool *pool1 = *(RxBufPool **)p1; const RxBufPool *pool2 = *(RxBufPool **)p2; if (pool1->bufsize < pool2->bufsize) { return -1; } return pool1->bufsize > pool2->bufsize; } /** * Search for a matching buffer pool with exact matching size, * or return -1 if no matching pool has been found. */ static int spapr_vlan_get_rx_pool_id(SpaprVioVlan *dev, int size) { int pool; for (pool = 0; pool < RX_MAX_POOLS; pool++) { if (dev->rx_pool[pool]->bufsize == size) { return pool; } } return -1; } /** * Enqueuing receive buffer by adding it to one of our receive buffer pools */ static target_long spapr_vlan_add_rxbuf_to_pool(SpaprVioVlan *dev, target_ulong buf) { int size = VLAN_BD_LEN(buf); int pool; pool = spapr_vlan_get_rx_pool_id(dev, size); if (pool < 0) { /* * No matching pool found? Try to use a new one. If the guest used all * pools before, but changed the size of one pool in the meantime, we might * need to recycle that pool here (if it's empty already). Thus scan * all buffer pools now, starting with the last (likely empty) one. */ for (pool = RX_MAX_POOLS - 1; pool >= 0 ; pool--) { if (dev->rx_pool[pool]->count == 0) { dev->rx_pool[pool]->bufsize = size; /* * Sort pools by size so that spapr_vlan_receive() * can later find the smallest buffer pool easily. */ qsort(dev->rx_pool, RX_MAX_POOLS, sizeof(dev->rx_pool[0]), rx_pool_size_compare); pool = spapr_vlan_get_rx_pool_id(dev, size); trace_spapr_vlan_add_rxbuf_to_pool_create(pool, VLAN_BD_LEN(buf)); break; } } } /* Still no usable pool? Give up */ if (pool < 0 || dev->rx_pool[pool]->count >= RX_POOL_MAX_BDS) { return H_RESOURCE; } trace_spapr_vlan_add_rxbuf_to_pool(pool, VLAN_BD_LEN(buf), dev->rx_pool[pool]->count); dev->rx_pool[pool]->bds[dev->rx_pool[pool]->count++] = buf; return 0; } /** * This is the old way of enqueuing receive buffers: Add it to the rx queue * page that has been supplied by the guest (which is quite limited in size). */ static target_long spapr_vlan_add_rxbuf_to_page(SpaprVioVlan *dev, target_ulong buf) { vlan_bd_t bd; if (dev->rx_bufs >= VLAN_MAX_BUFS) { return H_RESOURCE; } do { dev->add_buf_ptr += 8; if (dev->add_buf_ptr >= VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF) { dev->add_buf_ptr = VLAN_RX_BDS_OFF; } bd = vio_ldq(&dev->sdev, dev->buf_list + dev->add_buf_ptr); } while (bd & VLAN_BD_VALID); vio_stq(&dev->sdev, dev->buf_list + dev->add_buf_ptr, buf); trace_spapr_vlan_add_rxbuf_to_page(dev->add_buf_ptr, dev->rx_bufs, buf); return 0; } static target_ulong h_add_logical_lan_buffer(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; target_ulong buf = args[1]; SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); target_long ret; trace_spapr_vlan_h_add_logical_lan_buffer(reg, buf); if (!sdev) { hcall_dprintf("Bad device\n"); return H_PARAMETER; } if ((check_bd(dev, buf, 4) < 0) || (VLAN_BD_LEN(buf) < 16)) { hcall_dprintf("Bad buffer enqueued\n"); return H_PARAMETER; } if (!dev->isopen) { return H_RESOURCE; } if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) { ret = spapr_vlan_add_rxbuf_to_pool(dev, buf); } else { ret = spapr_vlan_add_rxbuf_to_page(dev, buf); } if (ret) { return ret; } dev->rx_bufs++; /* * Give guest some more time to add additional RX buffers before we * flush the receive queue, so that e.g. fragmented IP packets can * be passed to the guest in one go later (instead of passing single * fragments if there is only one receive buffer available). */ timer_mod(dev->rxp_timer, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 500); return H_SUCCESS; } static target_ulong h_send_logical_lan(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; target_ulong *bufs = args + 1; target_ulong continue_token = args[7]; SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); unsigned total_len; uint8_t *lbuf, *p; int i, nbufs; int ret; trace_spapr_vlan_h_send_logical_lan(reg, continue_token); if (!sdev) { return H_PARAMETER; } trace_spapr_vlan_h_send_logical_lan_rxbufs(dev->rx_bufs); if (!dev->isopen) { return H_DROPPED; } if (continue_token) { return H_HARDWARE; /* FIXME actually handle this */ } total_len = 0; for (i = 0; i < 6; i++) { trace_spapr_vlan_h_send_logical_lan_buf_desc(bufs[i]); if (!(bufs[i] & VLAN_BD_VALID)) { break; } total_len += VLAN_BD_LEN(bufs[i]); } nbufs = i; trace_spapr_vlan_h_send_logical_lan_total(nbufs, total_len); if (total_len == 0) { return H_SUCCESS; } if (total_len > MAX_PACKET_SIZE) { /* Don't let the guest force too large an allocation */ return H_RESOURCE; } lbuf = alloca(total_len); p = lbuf; for (i = 0; i < nbufs; i++) { ret = spapr_vio_dma_read(sdev, VLAN_BD_ADDR(bufs[i]), p, VLAN_BD_LEN(bufs[i])); if (ret < 0) { return ret; } p += VLAN_BD_LEN(bufs[i]); } qemu_send_packet(qemu_get_queue(dev->nic), lbuf, total_len); return H_SUCCESS; } static target_ulong h_multicast_ctrl(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; SpaprVioDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); if (!dev) { return H_PARAMETER; } return H_SUCCESS; } static target_ulong h_change_logical_lan_mac(PowerPCCPU *cpu, SpaprMachineState *spapr, target_ulong opcode, target_ulong *args) { target_ulong reg = args[0]; target_ulong macaddr = args[1]; SpaprVioDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg); SpaprVioVlan *dev = VIO_SPAPR_VLAN_DEVICE(sdev); int i; for (i = 0; i < ETH_ALEN; i++) { dev->nicconf.macaddr.a[ETH_ALEN - i - 1] = macaddr & 0xff; macaddr >>= 8; } qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a); return H_SUCCESS; } static Property spapr_vlan_properties[] = { DEFINE_SPAPR_PROPERTIES(SpaprVioVlan, sdev), DEFINE_NIC_PROPERTIES(SpaprVioVlan, nicconf), DEFINE_PROP_BIT("use-rx-buffer-pools", SpaprVioVlan, compat_flags, SPAPRVLAN_FLAG_RX_BUF_POOLS_BIT, true), DEFINE_PROP_END_OF_LIST(), }; static bool spapr_vlan_rx_buffer_pools_needed(void *opaque) { SpaprVioVlan *dev = opaque; return (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) != 0; } static const VMStateDescription vmstate_rx_buffer_pool = { .name = "spapr_llan/rx_buffer_pool", .version_id = 1, .minimum_version_id = 1, .needed = spapr_vlan_rx_buffer_pools_needed, .fields = (VMStateField[]) { VMSTATE_INT32(bufsize, RxBufPool), VMSTATE_INT32(count, RxBufPool), VMSTATE_UINT64_ARRAY(bds, RxBufPool, RX_POOL_MAX_BDS), VMSTATE_END_OF_LIST() } }; static const VMStateDescription vmstate_rx_pools = { .name = "spapr_llan/rx_pools", .version_id = 1, .minimum_version_id = 1, .needed = spapr_vlan_rx_buffer_pools_needed, .fields = (VMStateField[]) { VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(rx_pool, SpaprVioVlan, RX_MAX_POOLS, 1, vmstate_rx_buffer_pool, RxBufPool), VMSTATE_END_OF_LIST() } }; static const VMStateDescription vmstate_spapr_llan = { .name = "spapr_llan", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_SPAPR_VIO(sdev, SpaprVioVlan), /* LLAN state */ VMSTATE_BOOL(isopen, SpaprVioVlan), VMSTATE_UINT64(buf_list, SpaprVioVlan), VMSTATE_UINT32(add_buf_ptr, SpaprVioVlan), VMSTATE_UINT32(use_buf_ptr, SpaprVioVlan), VMSTATE_UINT32(rx_bufs, SpaprVioVlan), VMSTATE_UINT64(rxq_ptr, SpaprVioVlan), VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription * []) { &vmstate_rx_pools, NULL } }; static void spapr_vlan_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); k->realize = spapr_vlan_realize; k->reset = spapr_vlan_reset; k->devnode = spapr_vlan_devnode; k->dt_name = "l-lan"; k->dt_type = "network"; k->dt_compatible = "IBM,l-lan"; k->signal_mask = 0x1; set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); device_class_set_props(dc, spapr_vlan_properties); k->rtce_window_size = 0x10000000; dc->vmsd = &vmstate_spapr_llan; } static const TypeInfo spapr_vlan_info = { .name = TYPE_VIO_SPAPR_VLAN_DEVICE, .parent = TYPE_VIO_SPAPR_DEVICE, .instance_size = sizeof(SpaprVioVlan), .class_init = spapr_vlan_class_init, .instance_init = spapr_vlan_instance_init, .instance_finalize = spapr_vlan_instance_finalize, }; static void spapr_vlan_register_types(void) { spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan); spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan); spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan); spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER, h_add_logical_lan_buffer); spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl); spapr_register_hypercall(H_CHANGE_LOGICAL_LAN_MAC, h_change_logical_lan_mac); type_register_static(&spapr_vlan_info); } type_init(spapr_vlan_register_types)