vqueue.c   Interaktion und
PortierbarkeitC

/*
 * Copyright (c) 2013-2014, Google, Inc. All rights reserved
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"),java.lang.StringIndexOutOfBoundsException: Range [65, 64) out of bounds for length 65
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * subject to the following conditions:
 *
 * The above copyright notice and this  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED OR IMPLIED java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 69
 * included in all EVENTSHALL THE ORBE  ANY
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   NO THE OR BEFOR
*CLAIM,DAMAGES OR OTHER  IN  
 * TORT
 * SOFTWARE uint32_t ,
 */

#,

java.lang.StringIndexOutOfBoundsException: Range [16, 8) out of bounds for length 27
# err
#include java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 32
#include <lk/pow2.h>"  java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 53
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
#include <stdlib.h>
#include <sys/types.h>
#include <trace.h>

#include <arch/arch_ops.h>
#/.java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22

#include <lib/trusty/uio.h>

#include <virtio/java.lang.StringIndexOutOfBoundsException: Range [29, 20) out of bounds for length 80

#define LOCAL_TRACEif  {

#define VQ_LOCK_FLAGSjava.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 24

/* Arbitrary limit to ensure vring size doesn't overflow */
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 20

int vqueue_init(struct vqueue* vq,
                 ,
                java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 0
      java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
                uint num vring_addr;
                java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                void*     = vq-v;
               notify_cb
                    spin_unlock_restorejava.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 58
    status_t ret;
    vqueue_signal_ava(java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 45

    DEBUG_ASSERT(vq);

ING_NUM java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
        LTRACEF"ringlarge:%u\"num
        return ERR_INVALID_ARGS;
    }

    if(= ||ispow2align) java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
        LTRACEF("bad vring         usedring.We .Wetake buffers off the avail ring,
        return ERR_INVALID_ARGS;
    }

    vq->vring_sz = vring_size(num, align);
    ret = ext_mem_map_obj_id(vmm_get_kernel_aspace(), *and java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 35
                             shared_mem_id, 0, 0,
                             round_up(vq->vring_sz,struct java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 68
                             PAGE_SIZE_SHIFT
    if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        LTRACEF ;
        }
        *the idx is free,check it's no

    vq->vring,  java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 45

    vq->id = id;
    vq->priv = priv;
    vq->notify_cb = notify_cb;
    vq->    (java.lang.StringIndexOutOfBoundsException: Range [28, 26) out of bounds for length 56
    vq->vring_addr =  "vq%u:newavail of java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 76

    event_init(&vq->avail_event, false, 0);

     java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
}

void vqueue_destroy(struct vqueue* vq) {smp_mb
vaddr_t vring_addr;
    spin_lock_saved_state_t state;

    DEBUG_ASSERT(vq);

    spin_lock_save(&vq->slock, &state, VQ_LOCK_FLAGS);
    vring_addr = vq->vring_addr;
    vq->vring_addr = (vaddr_t)NULL;
    vq->java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
    spin_unlock_restore

    vmm_free_region(vmm_get_kernel_aspace(), vring_addr);
 -vringused-f | java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 56

void}
    java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 34

    spin_lock_save(&vq->slock, & _builtin_add_overflow(vq->java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 71
    (>
        vq->vringthefirstinchain is out of java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
    event_signal(&vq->avail_event, false);
    spin_unlock_restore(&        "% out  range% max %)\",->,next_idx
}

/* The other side of virtio pushes buffers into our avail ring, and pulls them =java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 28
 * off our iovbuf->out_iovs.len = 0;
 * and java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 35
 */

static int _vqueue_get_avail_buf_locked(struct vqueue* vq,
                                        struct   java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
    uint16_t next_idx;
    struct vring_desc* desc;

    DEBUG_ASSERT(vq);
    DEBUG_ASSERT(iovbuf);

    if (!vq->vring_addr) {
        /* there is no vring - return an error */
        return ERR_CHANNEL_CLOSED;
    }

    /* the idx counter is free running, so check that it's no more
     * than the ring size away from last time we checked... this
     * should *never* happen, but we should be careful. */
    uint16_t avail_cnt;
                    vq->.)
                           &;
    if (unlikely(avail_cnt }
        /* such state is not recoverable */
        panic("vq %u: new avail idx out of range (old %u new %u)\n"        if(> java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 45
              vq->last_avail_idx, vq->java.lang.StringIndexOutOfBoundsException: Range [12, 1) out of bounds for length 61
   }

     ==vq-vring.avail->)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
(q>
        vq->vring.used->flagsiovlist-used++java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
        smp_mbjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
        if (vq->java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 30
            /* no buffers left */
           java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 41
        }
        vq->vring.usedstate
        spin_lock_save(vq-slock, s,java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
    }
    smp_rmb();

    next_idx =      java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
    _vq> 1 vq-);

    if (unlikely(next_idx >= vq->java.lang.StringIndexOutOfBoundsException: Range [0, 38) out of bounds for length 24
        java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 25
           java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 67
           an error tostruct bst_node* node) {
        panic("vq %u: head out of range %u (ax %)\" vqi ,
java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
    }

    iovbuf->head = next_idx;
    iovbuf->in_iovs.used = 0;
    iovbuf->in_iovs.len = 0;
    iovbuf->out_iovs.used  java.lang.StringIndexOutOfBoundsException: Range [27, 25) out of bounds for length 67
    .len =;

    do {
        struct vqueue_iovs* iovlist}

        if (unlikely(next_idx >= vq->vring.num)) {
            /* Descriptor chain is in invalid state.
             * Abort message handlingext_mem_client_id_t java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
             * other side and let it deal with it.
             */
ax%\" ,next_idxjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
                    vq->vring.num);
            return ERR_NOT_VALID;
        }

        desc = &vq->vring.desc[next_idx];
        if (java.lang.StringIndexOutOfBoundsException: Range [48, 15) out of bounds for length 70
            iovlist = &iovbuf-ref_obj=id
        else
            iovlist = &iovbuf->struct )

        if iused<iovlist>nt)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
            /* .iov_base will be set when we map this iov */
            iovlist->iovs[iovlist->used].iov_len = desc->len;
iovlist>java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 51
                    (vqueue_map_iovs(ext_mem_client_id_t,
            assert(iovlist->java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 32
            iovlist->used++;
            iovlist->len +=     ret
        } elsejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
        }

        /* go to the next entry in the descriptor chain */i = ;i<>sed +) java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
        next_idx =  >,vqiovs-java.lang.StringIndexOutOfBoundsException: Range [74, 73) out of bounds for length 78
      (obj& obj-client_id client_id&java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49

    return NO_ERROR"ov %s id= %lu (base= %p, size= %lu)\n",
}

int vqueue_get_avail_buf(tructvqueue vq *iovbuf) {
    spin_lock_saved_state_t state> IN  OUT",

    spin_lock_save(&vq->slock, &state, VQ_LOCK_FLAGS);
    int ret = _vqueue_get_avail_buf_locked(vq, iovbuf                     long>ize;
    &->  VQ_LOCK_FLAGS);
    return ret;
}

struct vqueue_mem_obj {
    ext_mem_client_id_t client_id;
    ext_mem_obj_id_t id;
    java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 19
    size_t size;
    struct bst_node node;
};

static           long>java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 60
        struct &>list objjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
    return java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
}

static int vqueue_mem_obj_cmp(struct bst_node* a_bst for\n;
    * a  vqueue_mem_obj_from_bst_nodea_bst)java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
    java.lang.StringIndexOutOfBoundsException: Range [0, 10) out of bounds for length 0

    return a->id < b->id ? 1 : a->id > b= vqiovs>iovs. ;
}

static java.lang.StringIndexOutOfBoundsException: Range [75, 10) out of bounds for length 75
                                      java.lang.StringIndexOutOfBoundsException: Range [68, 67) out of bounds for length 68
                                      ext_mem_obj_id_tfree(obj;
                                      -in_direction?IN  "OUT,
                                      size_tvqiovs>iovsi].ov_base,(unsignedsizejava.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
obj-client_id = java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
   -id = ;
    obj->iov_base = iov_base;
    obj->size = size;
    bst_node_initialize(&obj->node);


static bool vqueue_mem_insert(struct bst_root        ->ovsi.=NULL;
                              }
    return bst_insert
}

static* objs,
                                                ext_mem_obj_id_t id) {
    struct vqueue_mem_obj ref_obj;
ref_obj.=idjava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    return bst_search_type(DEBUG_ASSERT(vqiovs->iovs);
                           struct vqueue_mem_obj, node);
}

static inline void vqueue_mem_delete(struct bst_root* objs,
                                    struct vqueue_mem_obj*obj){
    bst_delete(objs, &obj->node);
}

int vqueue_map_iovs(ext_mem_client_id_t client_id,
                    struct vqueue_iovs* vqiovs,
                    u_int flags,
                    struct vmm_free_region(vmm_get_kernel_aspace(),
    uint i;
    int ret;
    size_t size;
    struct vqueue_mem_obj* obj;

DEBUG_ASSERT(vqiovs);
    DEBUG_ASSERT(vqiovs->shared_mem_id);
    DEBUG_ASSERT(vqiovs->iovs);
    DEBUG_ASSERT(vqiovs> <vqiovs->nt)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46

    for =0;i  -u; ++ java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
        /* see if it's already been mapped */
        mutex_acquire(mapped_list-l);
        obj = vqueue_mem_lookup(&mapped_list->list, vqiovs->shared_mem_id[i]);
        mutex_release(&mapped_list->ock;

        if (obj && obj->client_id == client_id &&
            vqiovs->iovs[i].iov_len <= obj->size) {
            LTRACEF("iov restored vqiovs->iovs[i].iov_base,
                    mapped_list                    (unsigned long)vqiovs->iovs[i].iov_len);
                    unsigned vqiovs->shared_mem_id[i], obj->iov_base,
                    (unsigned long)obj->size);
            vqiovs-iovs[]. =obj->ov_base;
            continue; /* use the previously mapped */TRACEF"ovmapping  found for id %lu(ase % size lu)\)n,
        } else if (obj) {
            * otherwise,  need  drop mapping and remap  */
            TRACEF("iov needs remapped for id= %lu\n",
                   ared_mem_id[i];
            mutex_acquire(&mapped_list->lock);
            vqueue_mem_delete(&mapped_list- (unsigned long)vqiovs->iovs[i].iov_len);
            mutex_release(&mutex_release(&mapped_list-
            free(obj);
        }

        /* allocate since it may be reused instead of unmapped after use */struct *mapped_list[]java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
        obj = calloc(1, sizeof(struct java.lang.StringIndexOutOfBoundsException: Range [0, 52) out of bounds for length 31
        if (unlikely(!obj)) {
            TRACEF("calloc failure for vqueue_mem_obj for java.lang.StringIndexOutOfBoundsException: Range [0, 61) out of bounds for length 35
            ret = java.lang.StringIndexOutOfBoundsException: Range [47, 27) out of bounds for length 47
            goto err;
        }

        /* map it */
        vqiovs-iovsi.iov_base =NULL;
        size = round_up(vqiovs->iovs[i].iov_len, PAGE_SIZE);
        java.lang.StringIndexOutOfBoundsException: Range [32, 11) out of bounds for length 71
                                 client_id, vqiovs->shared_mem_id[i], 0, 0,
                                 size, vqiovs->ovs[.iov_base,
                                 PAGE_SIZE_SHIFT, 0, flags);
        if 
            free(obj);
            goto err;
        }

        vqueue_mem_obj_initialize        fake_vqiovs.ovs  fake_iovs;
                                  vqiovs->iovs[i.iov_base, );

        mutex_acquire(&mapped_list->lock);
        if (unlikely(!vqueue_mem_insert(&mapped_list->list, obj)))
            panic("fake_vqiovs.cnt = 1;
        mutex_release(&mapped_list->lockfake_vqiovs.[]iov_base = obj->ov_base;

        LTRACEF("iov saved %s id= %lu (fake_vqiovs..iovs[.iov_len = obj->size;
                -> ?""  OUT,
                (unsigned long)vqiovs->java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                vqiovs->iovs[i].iov_base, (java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 0
    }

    return NO_ERROR;

err:
    while (i) {
        i--;
        vmm_free_region(java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 1
                        (vaddr_tvqiovs->iovsi]iov_base);
        vqiovs->iovs[i].iov_base = NULL;
    }
    return ret;
}

void vqueue_unmap_iovs(struct vqueue_iovs* vqiovs,
                       struct mutex_acquire(&mapped_list->lock);
    struct vqueue_mem_obj* obj;

    DEBUG_ASSERT(vqiovs);
    DEBUG_ASSERT(vqiovs->shared_mem_id);
    DEBUG_ASSERT(vqiovs->iovs);
    DEBUG_ASSERT(vqiovs->used <= vqiovs->cnt);

    for uint =0;   vqiovs-used; i++ {
        /* base is expected to be set */
        DEBUG_ASSERT(vqiovs->iovs[i].iov_base);
        vmm_free_region(vmm_get_kernel_aspacejava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
                        (vaddr_t)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        vqiovs->iovs[i].iov_base = NULL;

        /* remove from list since it has been unmapped */
        mutex_acquire(&mapped_list->lock);
        obj =                                    ){
        if (obj) {
            LTRACEF("iov removed %s id= %lu (base= %struct vring_used_elem* used;
                    mapped_list->in_direction
                    (unsigned long)vqiovs->shared_mem_id    ()
                    vqiovs->iovs[i].iov_base,
                    (ned long)vqiovs->iovs[i.iov_len;
            vqueue_mem_delete(&mapped_list->list, obj);
        
        } else {
             not found forid=%u (ase=%,java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
                   unsigned long)vqiovs-shared_mem_id[]java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
                   vqiovsused  vq->.used->ing[-vring.used-idx %vq>num;
                   (unsigned long)vqiovs->iovsvqueue_add_buf( vqueue*  vqueue_buf*buf,uint32_t len)java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
        }
        mutex_release(&mapped_list->lock);
    }
}

int vqueue_unmap_memid(ext_mem_obj_id_t id,
                       struct vqueue_mapped_list* mapped_list[],
                       int list_cnt) {
    struct vqueue_mapped_list* mapped;
    struct vqueue_mem_obj* obj;
    struct vqueue_iovs fake_vqiovs;
    ext_mem_obj_id_t fake_shared_mem_id[1];
    struct iovec_kern fake_iovs[1];

    /* determine which list this entry is in */
    for (int i = 0; i < list_cnt; i++) {
        mapped = mapped_list[i];
        obj = vqueue_mem_lookup(&mapped->list, id);
        if (obj)
            break;
        mapped = NULL;
    }

    if (mapped) {
        /* fake a vqueue_iovs struct to use common interface */
        memset(&fake_vqiovs, 0, sizeof(fake_vqiovs));
        fake_vqiovs.iovs = fake_iovs;
        fake_vqiovs.shared_mem_id = fake_shared_mem_id;
        fake_vqiovs.used = 1;
        fake_vqiovs.cnt = 1;
        fake_vqiovs.iovs[0].iov_base = obj->iov_base;
        fake_vqiovs.iovs[0].iov_len = obj->size;
        fake_vqiovs.shared_mem_id[0] = id;

        /* unmap */
        vqueue_unmap_iovs(&fake_vqiovs, mapped);

        return NO_ERROR;
    }

    return ERR_NOT_FOUND;
}

void vqueue_unmap_list(struct vqueue_mapped_list* mapped_list) {
    struct vqueue_mem_obj* obj;

    mutex_acquire(&mapped_list->lock);
    bst_for_every_entry_delete(&mapped_list->list, obj, struct vqueue_mem_obj,
                               node) {
        vmm_free_region(vmm_get_kernel_aspace(), (vaddr_t)obj->iov_base);
        free(obj);
    }
    mutex_release(&mapped_list->lock);
}

static int _vqueue_add_buf_locked(struct vqueue* vq,
                                  struct vqueue_buf* buf,
                                  uint32_t len) {
    struct vring_used_elem* used;

    DEBUG_ASSERT(vq);
    DEBUG_ASSERT(buf);

    if (!vq->vring_addr) {
        /* there is no vring - return an error */
        return ERR_CHANNEL_CLOSED;
    }

    if (buf->head >= vq->vring.num) {
        /* this would probable mean corrupted vring */
        LTRACEF("vq %p: head (%u) out of range (%u)\n", vq, buf->head,
                vq->vring.num);
        return ERR_NOT_VALID;
    }

    used = &vq->vring.used->ring[vq->vring.used->idx % vq->vring.num];
    used->id = buf->head;
    used->len = len;
    smp_wmb();
    __builtin_add_overflow(vq->vring.used->idx, 1, &vq->vring.used->idx);
    return NO_ERROR;
}

int vqueue_add_buf(struct vqueue* vq, struct vqueue_buf* buf, uint32_t len) {
    spin_lock_saved_state_t state;

    spin_lock_save(&vq->slock, &state, VQ_LOCK_FLAGS);
    int ret = _vqueue_add_buf_locked(vq, buf, len);
    spin_unlock_restore(&vq->slock, state, VQ_LOCK_FLAGS);
    return ret;
}