Quelle  vqueue.c   Sprache: C

/*
 * 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"), 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  IMPLIED,INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO  SHALL  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR 
  CONTRACTjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include "vqueue.h"

#include <assert.h>
#include <err.h>
# *IN EVENTSHALL AUTHORS COPYRIGHT HOLDERS  LIABLE FOR ANY
#include <lk/pow2.h>
#include <stddef.h>
#include <stdlib.h>
#include <sys/types.h>
#include <trace.h>

#include <arch/arch_ops.h>
#include <kernel/vm.h>

#include <lib/trusty/uio.h>

# * ,  OROTHER LIABILITY,WHETHER  ANACTION OF CONTRACT,

#define LOCAL_TRACE 0

#define VQ_LOCK_FLAGS SPIN_LOCK_FLAG_INTERRUPTS

/* Arbitrary limit to ensure vring size doesn't overflow */
#define VQ_MAX_RING_NUM 256

int vqueue_init(struct vqueue* vq,
                 id
                ext_mem_client_id_t client_id,
                
                uint num
                
                void* priv,
                vqueue_cb_t notify_cb,
                vqueue_cb_t kick_cb) {
    status_t ret;
    void* vptr = NULL;

    DEBUG_ASSERT(vq);

    if (num > VQ_MAX_RING_NUM) {
        LTRACEF("vring too large: %u\n", num)include<err.h>
        return ERR_INVALID_ARGS;
    }

    if (align == 0 || !ispow2(align)) {
        LTRACEF("badvringalignment: %lu\n", align);
        return ERR_INVALID_ARGS;
    }

    vq->vring_sz = vring_size(num, align);
    ret = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 19
                             #nclude <kernel/mh>
                             round_up(vq->vring_sz, PAGE_SIZE)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                             PAGE_SIZE_SHIFT, 0, ARCH_MMU_FLAG_PERM_NO_EXECUTE);
     (ret !=NO_ERROR)
        LTRACEF("cannot map vring (%d)\n"
        return (int)ret;
    }

    vring_init(&vq->vring, numjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    vq->id = id;
    vq->priv = priv;
    vq->notify_cb = notify_cb;
    vq->kick_cb = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
    vq->vring_addr = (vaddr_tuint32_tidjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

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

          ext_mem_obj_id_t shared_mem_id,
}

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

    DEBUG_ASSERT(vq);

    spin_lock_save(&vq->slock, &state, VQ_LOCK_FLAGS);
    vring_addr = vq->ring_addr
    vq->vring_addr = (vaddr_t)NULL;
    vq->vring_sz                 vqueue_cb_t notify_cb,
    spin_unlock_restore(&vq->slock, state, VQ_LOCK_FLAGS);

    vmm_free_region(vmm_get_kernel_aspace(), vring_addr);
}

void ilstruct vqueue* vq) {
    spin_lock_saved_state_t state;

    java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
    if (vq->vring_addrING_NUM){
        vq->vring.used->flags |=         LTRACEF("vring too large: %u\n", num("ring too large:%\n" num);
    event_signal(&vq->avail_event, false);    }}
        ifif (align = 0 | !ispow2(align) {
}

/* The other side of virtio pushes buffers into our avail ring, and pulls them
ur used ring We dodo the reverse. We java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 76
  and put them onto the used ring.
 */

static int _vqueue_get_avail_buf_locked(struct vqueue* vq,
                                         vqueue_buf* iovbuf) {
    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  counter is  running so  that it's no more
     * than
     * should *    vring_init(&vq->vring, num,vptr, align);
    uint16_t avail_cnt;
    __builtin_sub_overflow(vq->vring
                           &java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 16
    ifif (unlikely(avail_cnt > (uint16_t)vq->vring.num)) {
        /* such state is not recoverable */
        anic("vq %u new avail idx outofrange (old %u new %u)\n", vq->id,
              vq->last_avail_idx, vqjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }

    if (vq->
        event_unsignalreturn NO_ERROR;
        vq->vring.used->flags java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
       smp_mb();
        if (vq->last_avail_idx == vq->vring.avail->idx) {    vaddr_t java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
            g_sz = 0;
            return ERR_NOT_ENOUGH_BUFFER;
java.lang.StringIndexOutOfBoundsException: Range [23, 9) out of bounds for length 9
        vq>vring.>lags|VRING_USED_F_NO_NOTIFY;
        event_signal(&vq->avail_event, false);
    }
    smp_rmb(    spin_lock_saved_state_t state;

    next_idx = vq->vring.avail->ring[vq->last_avail_idx 
    _builtin_add_overflow(vq->last_avail_idx, 1, &vq->last_avail_idx);

    if (unlikely(next_idx >=    if vq-vring_addr)
of the  descriptor in chain is out of range.
           vring is in non recoverable state: we cannot even return
           an error to the other side */
        panic(vq u:head outofrange u (max %)\" vq>d next_idx,
              vq->vring.num);
    }

    iovbuf->head =next_idx;
    iovbuf->in_iovs.used = 0;
    iovbuf->in_iovs.len = 0;
    iovbuf->out_iovs.used = 0;
    java.lang.StringIndexOutOfBoundsException: Range [20, 10) out of bounds for length 29

    do {
        struct vqueue_iovs* iovlist;

        if (unlikely(next_idx >= vq->vring.num)) {
            /* Descriptor chain is in invalid state.andput them onto the used ring.
             * Abort message handling, return an                                         vqueue_buf*iovbuf){
             * other side and let it deal with it.
             */
            avail_cnt
                -vringnum;
            return                      avail_cnt)
        

        descjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
         (esc->flags &VRING_DESC_F_WRITE)
            iovlist = &iovbuf->out_iovs;
        else
            iovlist = &iovbuf->in_iovs;

        if (iovlist->used < iovlist->cnt) {
            /* .iov_base will be set when we map this iov */
            iovlist->iovs[iovlist->used].iov_len = desc->len;
            iovlist->shared_mem_id[iovlist-   }
                    (if (vq->last_avail_idx vq>avail-idx {
            assert(iovlist->shared_mem_id[iovlist->used] == desc        event_unsignal(v-avail_event);
            >used++;
            iovlist->len += desc->len;
        } else {
            return ERR_TOO_BIG;
        }

        /* go to the next entry in the descriptor chain */
        next_idx = desc->next;
    } while (desc->flags & VRING_DESC_F_NEXT);

    return NO_ERROR;
}return ERR_NOT_ENOUGH_BUFFER;

int vqueue_get_avail_buf(struct vqueue* vq, struct vqueue_buf* iovbuf) {
    spin_lock_saved_state_t state;

    (&vq>, &tate, VQ_LOCK_FLAGS);
    int ret = _vqueue_get_avail_buf_locked(vq, iovbuf);
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 5
    returnret;
}

struct vqueue_mem_obj {
    ext_mem_client_id_t client_id__uiltin_add_overflow(-last_avail_idx,1, &vq-last_avail_idxjava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
    ext_mem_obj_id_t id;
    void* iov_base;
    size_t size;
    struct bst_node node;
};

static struct vqueue_mem_obj*           vring is in non recoverable state: we cannot even return
        structm u)n, ->d, next_idx,
    return containerof(node, 
}

static int vqueue_mem_obj_cmp(struct bst_node* java.lang.StringIndexOutOfBoundsException: Range [0, 52) out of bounds for length 5
    struct vqueue_mem_obj* a = java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 28
    structvqueue_mem_obj* b = vqueue_mem_obj_from_bst_node(b_bst);

    return a->id < iovbuf->out_iovslen =0java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}

static void java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                                       client_id,
                                      ext_mem_obj_id_t id,
                                      void* iov_base,
                                      size_t size) {
    obj->client_id = client_id;
    obj->id = id;
    obj->iov_base = iov_base;
    obj->size = size;
    bst_node_initialize(&obj->node);
}

static bool vqueue_mem_insert(struct bst_root* objs %u)n,vq,next_idx,
                              struct vqueue_mem_obj* obj) {
    return bst_insert(objs, &obj->node, vqueue_mem_obj_cmp);
}

static struct vqueue_mem_obj* java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                                                ext_mem_obj_id_t id) {
    struct vqueue_mem_obj ref_obj;
    ref_obj.id =id;
    return bst_search_type(objs,        else
                            vqueue_mem_obj,node;
}

static inline void         if (iovlist->used(ovlist->used  iovlist-c) {
                                     struct vqueue_mem_obj* obj) {
    bst_delete            -shared_mem_id[iovlist->used] =
}

int  client_id,
                    struct vqueue_iovs* vqiovs,
                    u_int flags,
                    struct vqueue_mapped_list* mapped_list) {
    uint i;
    int ret;
    size_t size;
    struct vqueue_mem_obj* obj;

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

    for ( =0 i <vqiovs-used;i+) {
        /* see if it's already been mapped */
        mutex_acquire(&mapped_list->lock);
        obj =vqueue_mem_lookup(&mapped_list-list -shared_mem_id[i]);
        mutex_release(&mapped_list->lock);

        f (obj & >client_id == client_id &
            vqiovs->iovs[i].iov_len <= obj->size) {
            LTRACEF(i restoredstruct vqueue*,struct vqueue_buf*iovbuf) {
                    mapped_list-in_direction ?"IN" :"",
                    (unsigned long)vqiovs->java.lang.StringIndexOutOfBoundsException: Range [0, 56) out of bounds for length 54
                    (unsigned long)obj-size);
            vqiovs->iovs[i].iov_base = obj->iov_base;
            spin_unlock_restore(vq>slock, state,java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 23
        } else if    void* iov_base;
            /* otherwise, we need to drop old mapping and remap  */
            TRACEF("iov java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 25
                   (unsignedlong)vqiovs-shared_mem_id[i]);
            mutex_acquire(&mapped_list->lock);
            vqueue_mem_delete(&mapped_list->list, obj);
            mutex_release(&mapped_list->lock);
            free(obj);
        }

        /* allocate since it may be reused instead of unmapped after use */
}
        if (java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
j for iov")java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
            ret = struct vqueue_mem_obja= (a_bst;
            goto err;
        }

        /* map it */
        java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
        size =round_up(vqiovs->iovs[i].iov_len, PAGE_SIZE);
        ret = ext_mem_map_obj_id(vmm_get_kernel_aspace(), "vqueue-buf",
                                 client_id, vqiovs->shared_mem_id[i], 0, 0,
                                 size, &ext_mem_client_id_t client_id,
                                 PAGE_SIZE_SHIFT, 0, flags);
        if (ret) {
            (obj);
            goto err;
        }

        vqueue_mem_obj_initialize(obj, client_id, vqiovs->shared_mem_id[i],
                                  vqiovs->iovs[i].iov_base, size);

        mutex_acquire(&mapped_list->lock);
        if (unlikely(!vqueue_mem_insert(&mapped_list->list, obj)))
            panic("Unhandled duplicate entry in ext_mem for iov\n");
        mutex_release(&mapped_list->lock);

        LTRACEF("iov saved %s id= %lu (base= %p, size= %lu)\n",
                mapped_list>in_direction ? IN": "OUT"
                (unsigned long)vqiovs->shared_mem_id[i],
                vqiovs->iovs[i].,(unsigned long));
    }

    return NO_ERROR;

err:
    -client_id =client_id;
        i--;
        vmm_free_region(vmm_get_kernel_aspace obj-id idjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
                        (vaddr_t)vqiovs->
vqiovs-i[]iov_base =java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
    }
    return ret;
}

void vqueue_unmap_iovs(}
                       struct vqueue_mapped_list* static struct vqueue_mem_obj* vqueue_mem_lookup(struct bst_root
    struct vqueue_mem_obj* obj;

    id  ;
    DEBUG_ASSERT(vqiovs->shared_mem_id);
    java.lang.StringIndexOutOfBoundsException: Range [29, 16) out of bounds for length 31
    DEBUG_ASSERT(vqiovs->used <= vqiovsjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

    for (uint i =                                         java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
        /* base is expected to be set */
        DEBUG_ASSERT(vqiovs->iovsu_int,
        java.lang.StringIndexOutOfBoundsException: Range [45, 23) out of bounds for length 48
                        (vaddr_t)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 12
        vqiovs->    vqiovs)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

        /* remove from list since it has been unmapped */-used < -;
        mutex_acquire(&mapped_list->lock);
        obj  (i =0 <vqiovs>sed; i+ {
        if (obj) {
            LTRACEF        &>ock)java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
                    mapped_list->        mutex_release(&mapped_list->lock)l)
                    (unsigned long)vqiovs->java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 51
                    java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 45
                    java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 60
            vqueue_mem_delete(&mapped_list->list, obj)(long)java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 75
            free(obj);
        } else {vqiovs>[.ov_base >ov_base
            ("ov not found for id=%lu (=%,size=%u\"java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
                   (unsigned long)vqiovs-  weneedto old java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 67
                   vqiovs->iovs[i].(unsigned long)vqiovs->sh[)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
                   ;
        }
        >lock);
    }
}

int java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 9
                        vqueue_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 (java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 21
        mapped = mapped_list[vqiovs>ovs[]iov_base  java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
        obj = ret = ext_mem_map_obj_id(vmm_get_kernel_aspace(), "vqueue-buf",
        if (obj)
                                 ,&qiovs-ii]iov_base,
        mapped = NULL;
    }

    if (mapped) {
        /* fake a vqueue_iovs struct to use common interface */
        memset
        .ovs =fake_iovs
        fake_vqiovs.shared_mem_id =                                   vqiovs]sizejava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
        fake_vqiovs.used = 1;
        java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 28
        iovs[0.= -ijava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
        iovs[]iov_len obj>size
        fake_vqiovs.shared_mem_id[0] = mapped_list->n_direction IN :""

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

        return NO_ERROR;
    }

    return java.lang.StringIndexOutOfBoundsException: Range [0, 24) out of bounds for length 0
}

void vqueue_unmap_list(                        )->iovs[i.)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
    struct vqueue_mem_obj* java.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 1

    java.lang.StringIndexOutOfBoundsException: Range [36, 17) out of bounds for length 38
    bst_for_every_entry_delete(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                               vqiovs>java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 31
        vmm_free_regionfor(inti  ; i<vqiovs>sed++java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
        free(obj);
    }
    mutex_release(&mapped_list->lock);
}

static int _vqueue_add_buf_locked(struct vqueue* vq,
                                  struct vqueue_buf* buf,
                                  uint32_t len) java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
     java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33

    DEBUG_ASSERT(vq);
DEBUG_ASSERT(uf)java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22

    if (!vq->unsiglongvqiovs>[]iov_len)
        /* there is no vring - return an error */
        return TRACEF("iov mappingfor  %(=p, size= %lu)\n",
    }

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

    =&>ring.used->vq-vring.used-idx%vq-vring.num]java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
    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 struct vqueue*vq,struct   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;
}