EXPORT_SYMBOL(cca_findcard);
int cca_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain,
- int minhwtype, u64 cur_mkvp, u64 old_mkvp, int verify)
+ int minhwtype, int mktype, u64 cur_mkvp, u64 old_mkvp,
+ int verify)
{
struct zcrypt_device_status_ext *device_status;
- int i, n, card, dom, curmatch, oldmatch, rc = 0;
+ u32 *_apqns = NULL, _nr_apqns = 0;
+ int i, card, dom, curmatch, oldmatch, rc = 0;
struct cca_info ci;
- *apqns = NULL;
- *nr_apqns = 0;
-
/* fetch status of all crypto cards */
- device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT,
- sizeof(struct zcrypt_device_status_ext),
- GFP_KERNEL);
+ device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT,
+ sizeof(struct zcrypt_device_status_ext),
+ GFP_KERNEL);
if (!device_status)
return -ENOMEM;
zcrypt_device_status_mask_ext(device_status);
- /* loop two times: first gather eligible apqns, then store them */
- while (1) {
- n = 0;
- /* walk through all the crypto cards */
- for (i = 0; i < MAX_ZDEV_ENTRIES_EXT; i++) {
- card = AP_QID_CARD(device_status[i].qid);
- dom = AP_QID_QUEUE(device_status[i].qid);
- /* check online state */
- if (!device_status[i].online)
- continue;
- /* check for cca functions */
- if (!(device_status[i].functions & 0x04))
- continue;
- /* check cardnr */
- if (cardnr != 0xFFFF && card != cardnr)
- continue;
- /* check domain */
- if (domain != 0xFFFF && dom != domain)
- continue;
- /* get cca info on this apqn */
- if (cca_get_info(card, dom, &ci, verify))
- continue;
- /* current master key needs to be valid */
- if (ci.cur_mk_state != '2')
- continue;
- /* check min hardware type */
- if (minhwtype > 0 && minhwtype > ci.hwtype)
- continue;
- if (cur_mkvp || old_mkvp) {
- /* check mkvps */
- curmatch = oldmatch = 0;
- if (cur_mkvp && cur_mkvp == ci.cur_mkvp)
+ /* allocate 1k space for up to 256 apqns */
+ _apqns = kmalloc_array(256, sizeof(u32), GFP_KERNEL);
+ if (!_apqns) {
+ kvfree(device_status);
+ return -ENOMEM;
+ }
+
+ /* walk through all the crypto apqnss */
+ for (i = 0; i < MAX_ZDEV_ENTRIES_EXT; i++) {
+ card = AP_QID_CARD(device_status[i].qid);
+ dom = AP_QID_QUEUE(device_status[i].qid);
+ /* check online state */
+ if (!device_status[i].online)
+ continue;
+ /* check for cca functions */
+ if (!(device_status[i].functions & 0x04))
+ continue;
+ /* check cardnr */
+ if (cardnr != 0xFFFF && card != cardnr)
+ continue;
+ /* check domain */
+ if (domain != 0xFFFF && dom != domain)
+ continue;
+ /* get cca info on this apqn */
+ if (cca_get_info(card, dom, &ci, verify))
+ continue;
+ /* current master key needs to be valid */
+ if (mktype == AES_MK_SET && ci.cur_aes_mk_state != '2')
+ continue;
+ if (mktype == APKA_MK_SET && ci.cur_apka_mk_state != '2')
+ continue;
+ /* check min hardware type */
+ if (minhwtype > 0 && minhwtype > ci.hwtype)
+ continue;
+ if (cur_mkvp || old_mkvp) {
+ /* check mkvps */
+ curmatch = oldmatch = 0;
+ if (mktype == AES_MK_SET) {
+ if (cur_mkvp && cur_mkvp == ci.cur_aes_mkvp)
+ curmatch = 1;
+ if (old_mkvp && ci.old_aes_mk_state == '2' &&
+ old_mkvp == ci.old_aes_mkvp)
+ oldmatch = 1;
+ } else {
+ if (cur_mkvp && cur_mkvp == ci.cur_apka_mkvp)
curmatch = 1;
- if (old_mkvp && ci.old_mk_state == '2' &&
- old_mkvp == ci.old_mkvp)
+ if (old_mkvp && ci.old_apka_mk_state == '2' &&
+ old_mkvp == ci.old_apka_mkvp)
oldmatch = 1;
- if ((cur_mkvp || old_mkvp) &&
- (curmatch + oldmatch < 1))
- continue;
}
- /* apqn passed all filtering criterons */
- if (*apqns && n < *nr_apqns)
- (*apqns)[n] = (((u16)card) << 16) | ((u16) dom);
- n++;
- }
- /* loop 2nd time: array has been filled */
- if (*apqns)
- break;
- /* loop 1st time: have # of eligible apqns in n */
- if (!n) {
- rc = -ENODEV; /* no eligible apqns found */
- break;
- }
- *nr_apqns = n;
- /* allocate array to store n apqns into */
- *apqns = kmalloc_array(n, sizeof(u32), GFP_KERNEL);
- if (!*apqns) {
- rc = -ENOMEM;
- break;
+ if (curmatch + oldmatch < 1)
+ continue;
}
- verify = 0;
+ /* apqn passed all filtering criterons, add to the array */
+ if (_nr_apqns < 256)
+ _apqns[_nr_apqns++] = (((u16)card) << 16) | ((u16) dom);
+ }
+
+ /* nothing found ? */
+ if (!_nr_apqns) {
+ kfree(_apqns);
+ rc = -ENODEV;
+ } else {
+ /* no re-allocation, simple return the _apqns array */
+ *apqns = _apqns;
+ *nr_apqns = _nr_apqns;
+ rc = 0;
}
- kfree(device_status);
+ kvfree(device_status);
return rc;
}
EXPORT_SYMBOL(cca_findcard2);
projects / linux-2.6-microblaze.git / commitdiff