From 94dd3bada53ee77b80d0aeee5571eeb83654d156 Mon Sep 17 00:00:00 2001 From: Harald Freudenberger Date: Fri, 20 Dec 2019 09:06:09 +0100 Subject: s390/zcrypt: Fix CCA cipher key gen with clear key value function Regression tests showed that the CCA cipher key function which generates an CCA cipher key with given clear key value does not work correctly. At parsing the reply CPRB two limits are wrong calculated resulting in rejecting the reply as invalid with s390dbf message "_ip_cprb_helper reply with invalid or unknown key block". Fixes: f2bbc96e7cfa ("s390/pkey: add CCA AES cipher key support") Cc: Stable Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik --- drivers/s390/crypto/zcrypt_ccamisc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/crypto/zcrypt_ccamisc.c b/drivers/s390/crypto/zcrypt_ccamisc.c index c1db64a2db21..110fe9d0cb91 100644 --- a/drivers/s390/crypto/zcrypt_ccamisc.c +++ b/drivers/s390/crypto/zcrypt_ccamisc.c @@ -1037,8 +1037,8 @@ static int _ip_cprb_helper(u16 cardnr, u16 domain, prepparm = (struct iprepparm *) prepcblk->rpl_parmb; /* do some plausibility checks on the key block */ - if (prepparm->kb.len < 120 + 5 * sizeof(uint16_t) || - prepparm->kb.len > 136 + 5 * sizeof(uint16_t)) { + if (prepparm->kb.len < 120 + 3 * sizeof(uint16_t) || + prepparm->kb.len > 136 + 3 * sizeof(uint16_t)) { DEBUG_ERR("%s reply with invalid or unknown key block\n", __func__); rc = -EIO; -- cgit v1.2.3 From 0c874cd04292c7ee22d70eefc341fa2648f41f46 Mon Sep 17 00:00:00 2001 From: Harald Freudenberger Date: Fri, 22 Nov 2019 16:30:06 +0100 Subject: s390/zcrypt: move ap device reset from bus to driver code This patch moves the reset invocation of an ap device when fresh detected from the ap bus to the probe() function of the driver responsible for this device. The virtualisation of ap devices makes it necessary to remove unconditioned resets on fresh appearing apqn devices. It may be that such a device is already enabled for guest usage. So there may be a race condition between host ap bus and guest ap bus doing the reset. This patch moves the reset from the ap bus to the zcrypt drivers. So if there is no zcrypt driver bound to an ap device - for example the ap device is bound to the vfio device driver - the ap device is untouched passed to the vfio device driver. Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik --- drivers/s390/crypto/ap_bus.c | 2 -- drivers/s390/crypto/ap_bus.h | 2 +- drivers/s390/crypto/ap_queue.c | 5 +++-- drivers/s390/crypto/zcrypt_cex2a.c | 1 + drivers/s390/crypto/zcrypt_cex2c.c | 2 ++ drivers/s390/crypto/zcrypt_cex4.c | 1 + 6 files changed, 8 insertions(+), 5 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index a1915061932e..5256e3ce84e5 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -793,8 +793,6 @@ static int ap_device_probe(struct device *dev) drvres = ap_drv->flags & AP_DRIVER_FLAG_DEFAULT; if (!!devres != !!drvres) return -ENODEV; - /* (re-)init queue's state machine */ - ap_queue_reinit_state(to_ap_queue(dev)); } /* Add queue/card to list of active queues/cards */ diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 433b7b64368d..bb35ba4a8d24 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -261,7 +261,7 @@ void ap_queue_prepare_remove(struct ap_queue *aq); void ap_queue_remove(struct ap_queue *aq); void ap_queue_suspend(struct ap_device *ap_dev); void ap_queue_resume(struct ap_device *ap_dev); -void ap_queue_reinit_state(struct ap_queue *aq); +void ap_queue_init_state(struct ap_queue *aq); struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type, int comp_device_type, unsigned int functions); diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index dad2be333d82..37c3bdc3642d 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -638,7 +638,7 @@ struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type) aq->ap_dev.device.type = &ap_queue_type; aq->ap_dev.device_type = device_type; aq->qid = qid; - aq->state = AP_STATE_RESET_START; + aq->state = AP_STATE_UNBOUND; aq->interrupt = AP_INTR_DISABLED; spin_lock_init(&aq->lock); INIT_LIST_HEAD(&aq->list); @@ -771,10 +771,11 @@ void ap_queue_remove(struct ap_queue *aq) spin_unlock_bh(&aq->lock); } -void ap_queue_reinit_state(struct ap_queue *aq) +void ap_queue_init_state(struct ap_queue *aq) { spin_lock_bh(&aq->lock); aq->state = AP_STATE_RESET_START; ap_wait(ap_sm_event(aq, AP_EVENT_POLL)); spin_unlock_bh(&aq->lock); } +EXPORT_SYMBOL(ap_queue_init_state); diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index c50f3e86cc74..7cbb384ec535 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -175,6 +175,7 @@ static int zcrypt_cex2a_queue_probe(struct ap_device *ap_dev) zq->queue = aq; zq->online = 1; atomic_set(&zq->load, 0); + ap_queue_init_state(aq); ap_queue_init_reply(aq, &zq->reply); aq->request_timeout = CEX2A_CLEANUP_TIME, aq->private = zq; diff --git a/drivers/s390/crypto/zcrypt_cex2c.c b/drivers/s390/crypto/zcrypt_cex2c.c index 35c7c6672713..c78c0d119806 100644 --- a/drivers/s390/crypto/zcrypt_cex2c.c +++ b/drivers/s390/crypto/zcrypt_cex2c.c @@ -220,6 +220,7 @@ static int zcrypt_cex2c_queue_probe(struct ap_device *ap_dev) zq->queue = aq; zq->online = 1; atomic_set(&zq->load, 0); + ap_rapq(aq->qid); rc = zcrypt_cex2c_rng_supported(aq); if (rc < 0) { zcrypt_queue_free(zq); @@ -231,6 +232,7 @@ static int zcrypt_cex2c_queue_probe(struct ap_device *ap_dev) else zq->ops = zcrypt_msgtype(MSGTYPE06_NAME, MSGTYPE06_VARIANT_NORNG); + ap_queue_init_state(aq); ap_queue_init_reply(aq, &zq->reply); aq->request_timeout = CEX2C_CLEANUP_TIME; aq->private = zq; diff --git a/drivers/s390/crypto/zcrypt_cex4.c b/drivers/s390/crypto/zcrypt_cex4.c index 442e3d6162f7..6fabc906114c 100644 --- a/drivers/s390/crypto/zcrypt_cex4.c +++ b/drivers/s390/crypto/zcrypt_cex4.c @@ -381,6 +381,7 @@ static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev) zq->queue = aq; zq->online = 1; atomic_set(&zq->load, 0); + ap_queue_init_state(aq); ap_queue_init_reply(aq, &zq->reply); aq->request_timeout = CEX4_CLEANUP_TIME, aq->private = zq; -- cgit v1.2.3