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Second rc pull request

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- Fix a long standing race bug when destroying comp_event file descriptors
 
 - srp, hfi1, bnxt_re: Various driver crashes from missing validation and
   other cases
 
 - Fixes for regressions in patches merged this window in the gid cache,
   devx, ucma and uapi.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Jason writes:
  "Second RDMA rc pull request

   - Fix a long standing race bug when destroying comp_event file descriptors

   - srp, hfi1, bnxt_re: Various driver crashes from missing validation
     and other cases

   - Fixes for regressions in patches merged this window in the gid
     cache, devx, ucma and uapi."

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/core: Set right entry state before releasing reference
  IB/mlx5: Destroy the DEVX object upon error flow
  IB/uverbs: Free uapi on destroy
  RDMA/bnxt_re: Fix system crash during RDMA resource initialization
  IB/hfi1: Fix destroy_qp hang after a link down
  IB/hfi1: Fix context recovery when PBC has an UnsupportedVL
  IB/hfi1: Invalid user input can result in crash
  IB/hfi1: Fix SL array bounds check
  RDMA/uverbs: Fix validity check for modify QP
  IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop
  ucma: fix a use-after-free in ucma_resolve_ip()
  RDMA/uverbs: Atomically flush and mark closed the comp event queue
  cxgb4: fix abort_req_rss6 struct
This commit is contained in:
Greg Kroah-Hartman 2018-09-27 21:53:55 +02:00
commit ad0371482b
14 changed files with 199 additions and 145 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
drivers/infiniband/core/cache.c
View File

@ -337,55 +337,6 @@ static int add_roce_gid(struct ib_gid_table_entry *entry)
return 0;
}
/**
* add_modify_gid - Add or modify GID table entry
*
* @table: GID table in which GID to be added or modified
* @attr: Attributes of the GID
*
* Returns 0 on success or appropriate error code. It accepts zero
* GID addition for non RoCE ports for HCA's who report them as valid
* GID. However such zero GIDs are not added to the cache.
*/
static int add_modify_gid(struct ib_gid_table *table,
const struct ib_gid_attr *attr)
{
struct ib_gid_table_entry *entry;
int ret = 0;
/*
* Invalidate any old entry in the table to make it safe to write to
* this index.
*/
if (is_gid_entry_valid(table->data_vec[attr->index]))
put_gid_entry(table->data_vec[attr->index]);
/*
* Some HCA's report multiple GID entries with only one valid GID, and
* leave other unused entries as the zero GID. Convert zero GIDs to
* empty table entries instead of storing them.
*/
if (rdma_is_zero_gid(&attr->gid))
return 0;
entry = alloc_gid_entry(attr);
if (!entry)
return -ENOMEM;
if (rdma_protocol_roce(attr->device, attr->port_num)) {
ret = add_roce_gid(entry);
if (ret)
goto done;
}
store_gid_entry(table, entry);
return 0;
done:
put_gid_entry(entry);
return ret;
}
/**
* del_gid - Delete GID table entry
*
@ -419,6 +370,55 @@ static void del_gid(struct ib_device *ib_dev, u8 port,
put_gid_entry_locked(entry);
}
/**
* add_modify_gid - Add or modify GID table entry
*
* @table: GID table in which GID to be added or modified
* @attr: Attributes of the GID
*
* Returns 0 on success or appropriate error code. It accepts zero
* GID addition for non RoCE ports for HCA's who report them as valid
* GID. However such zero GIDs are not added to the cache.
*/
static int add_modify_gid(struct ib_gid_table *table,
const struct ib_gid_attr *attr)
{
struct ib_gid_table_entry *entry;
int ret = 0;
/*
* Invalidate any old entry in the table to make it safe to write to
* this index.
*/
if (is_gid_entry_valid(table->data_vec[attr->index]))
del_gid(attr->device, attr->port_num, table, attr->index);
/*
* Some HCA's report multiple GID entries with only one valid GID, and
* leave other unused entries as the zero GID. Convert zero GIDs to
* empty table entries instead of storing them.
*/
if (rdma_is_zero_gid(&attr->gid))
return 0;
entry = alloc_gid_entry(attr);
if (!entry)
return -ENOMEM;
if (rdma_protocol_roce(attr->device, attr->port_num)) {
ret = add_roce_gid(entry);
if (ret)
goto done;
}
store_gid_entry(table, entry);
return 0;
done:
put_gid_entry(entry);
return ret;
}
/* rwlock should be read locked, or lock should be held */
static int find_gid(struct ib_gid_table *table, const union ib_gid *gid,
const struct ib_gid_attr *val, bool default_gid,

2
drivers/infiniband/core/ucma.c
View File

@ -1759,6 +1759,8 @@ static int ucma_close(struct inode *inode, struct file *filp)
mutex_lock(&mut);
if (!ctx->closing) {
mutex_unlock(&mut);
ucma_put_ctx(ctx);
wait_for_completion(&ctx->comp);
/* rdma_destroy_id ensures that no event handlers are
* inflight for that id before releasing it.
*/

68
drivers/infiniband/core/uverbs_cmd.c
View File

@ -2027,33 +2027,55 @@ static int modify_qp(struct ib_uverbs_file *file,
if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
cmd->base.cur_qp_state > IB_QPS_ERR) ||
cmd->base.qp_state > IB_QPS_ERR) {
(cmd->base.attr_mask & IB_QP_STATE &&
cmd->base.qp_state > IB_QPS_ERR)) {
ret = -EINVAL;
goto release_qp;
}
attr->qp_state = cmd->base.qp_state;
attr->cur_qp_state = cmd->base.cur_qp_state;
attr->path_mtu = cmd->base.path_mtu;
attr->path_mig_state = cmd->base.path_mig_state;
attr->qkey = cmd->base.qkey;
attr->rq_psn = cmd->base.rq_psn;
attr->sq_psn = cmd->base.sq_psn;
attr->dest_qp_num = cmd->base.dest_qp_num;
attr->qp_access_flags = cmd->base.qp_access_flags;
attr->pkey_index = cmd->base.pkey_index;
attr->alt_pkey_index = cmd->base.alt_pkey_index;
attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
attr->max_rd_atomic = cmd->base.max_rd_atomic;
attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
attr->min_rnr_timer = cmd->base.min_rnr_timer;
attr->port_num = cmd->base.port_num;
attr->timeout = cmd->base.timeout;
attr->retry_cnt = cmd->base.retry_cnt;
attr->rnr_retry = cmd->base.rnr_retry;
attr->alt_port_num = cmd->base.alt_port_num;
attr->alt_timeout = cmd->base.alt_timeout;
attr->rate_limit = cmd->rate_limit;
if (cmd->base.attr_mask & IB_QP_STATE)
attr->qp_state = cmd->base.qp_state;
if (cmd->base.attr_mask & IB_QP_CUR_STATE)
attr->cur_qp_state = cmd->base.cur_qp_state;
if (cmd->base.attr_mask & IB_QP_PATH_MTU)
attr->path_mtu = cmd->base.path_mtu;
if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
attr->path_mig_state = cmd->base.path_mig_state;
if (cmd->base.attr_mask & IB_QP_QKEY)
attr->qkey = cmd->base.qkey;
if (cmd->base.attr_mask & IB_QP_RQ_PSN)
attr->rq_psn = cmd->base.rq_psn;
if (cmd->base.attr_mask & IB_QP_SQ_PSN)
attr->sq_psn = cmd->base.sq_psn;
if (cmd->base.attr_mask & IB_QP_DEST_QPN)
attr->dest_qp_num = cmd->base.dest_qp_num;
if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
attr->qp_access_flags = cmd->base.qp_access_flags;
if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
attr->pkey_index = cmd->base.pkey_index;
if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
attr->max_rd_atomic = cmd->base.max_rd_atomic;
if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
attr->min_rnr_timer = cmd->base.min_rnr_timer;
if (cmd->base.attr_mask & IB_QP_PORT)
attr->port_num = cmd->base.port_num;
if (cmd->base.attr_mask & IB_QP_TIMEOUT)
attr->timeout = cmd->base.timeout;
if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
attr->retry_cnt = cmd->base.retry_cnt;
if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
attr->rnr_retry = cmd->base.rnr_retry;
if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
attr->alt_port_num = cmd->base.alt_port_num;
attr->alt_timeout = cmd->base.alt_timeout;
attr->alt_pkey_index = cmd->base.alt_pkey_index;
}
if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
attr->rate_limit = cmd->rate_limit;
if (cmd->base.attr_mask & IB_QP_AV)
copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,

1
drivers/infiniband/core/uverbs_main.c
View File

@ -440,6 +440,7 @@ static int ib_uverbs_comp_event_close(struct inode *inode, struct file *filp)
list_del(&entry->obj_list);
kfree(entry);
}
file->ev_queue.is_closed = 1;
spin_unlock_irq(&file->ev_queue.lock);
uverbs_close_fd(filp);

1
drivers/infiniband/core/uverbs_uapi.c
View File

@ -248,6 +248,7 @@ void uverbs_destroy_api(struct uverbs_api *uapi)
kfree(rcu_dereference_protected(*slot, true));
radix_tree_iter_delete(&uapi->radix, &iter, slot);
}
kfree(uapi);
}
struct uverbs_api *uverbs_alloc_api(

93
drivers/infiniband/hw/bnxt_re/main.c
View File

@ -78,7 +78,7 @@ static struct list_head bnxt_re_dev_list = LIST_HEAD_INIT(bnxt_re_dev_list);
/* Mutex to protect the list of bnxt_re devices added */
static DEFINE_MUTEX(bnxt_re_dev_lock);
static struct workqueue_struct *bnxt_re_wq;
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait);
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev);
/* SR-IOV helper functions */
@ -182,7 +182,7 @@ static void bnxt_re_shutdown(void *p)
if (!rdev)
return;
bnxt_re_ib_unreg(rdev, false);
bnxt_re_ib_unreg(rdev);
}
static void bnxt_re_stop_irq(void *handle)
@ -251,7 +251,7 @@ static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
/* Driver registration routines used to let the networking driver (bnxt_en)
* to know that the RoCE driver is now installed
*/
static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev, bool lock_wait)
static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev)
{
struct bnxt_en_dev *en_dev;
int rc;
@ -260,14 +260,9 @@ static int bnxt_re_unregister_netdev(struct bnxt_re_dev *rdev, bool lock_wait)
return -EINVAL;
en_dev = rdev->en_dev;
/* Acquire rtnl lock if it is not invokded from netdev event */
if (lock_wait)
rtnl_lock();
rc = en_dev->en_ops->bnxt_unregister_device(rdev->en_dev,
BNXT_ROCE_ULP);
if (lock_wait)
rtnl_unlock();
return rc;
}
@ -281,14 +276,12 @@ static int bnxt_re_register_netdev(struct bnxt_re_dev *rdev)
en_dev = rdev->en_dev;
rtnl_lock();
rc = en_dev->en_ops->bnxt_register_device(en_dev, BNXT_ROCE_ULP,
&bnxt_re_ulp_ops, rdev);
rtnl_unlock();
return rc;
}
static int bnxt_re_free_msix(struct bnxt_re_dev *rdev, bool lock_wait)
static int bnxt_re_free_msix(struct bnxt_re_dev *rdev)
{
struct bnxt_en_dev *en_dev;
int rc;
@ -298,13 +291,9 @@ static int bnxt_re_free_msix(struct bnxt_re_dev *rdev, bool lock_wait)
en_dev = rdev->en_dev;
if (lock_wait)
rtnl_lock();
rc = en_dev->en_ops->bnxt_free_msix(rdev->en_dev, BNXT_ROCE_ULP);
if (lock_wait)
rtnl_unlock();
return rc;
}
@ -320,7 +309,6 @@ static int bnxt_re_request_msix(struct bnxt_re_dev *rdev)
num_msix_want = min_t(u32, BNXT_RE_MAX_MSIX, num_online_cpus());
rtnl_lock();
num_msix_got = en_dev->en_ops->bnxt_request_msix(en_dev, BNXT_ROCE_ULP,
rdev->msix_entries,
num_msix_want);
@ -335,7 +323,6 @@ static int bnxt_re_request_msix(struct bnxt_re_dev *rdev)
}
rdev->num_msix = num_msix_got;
done:
rtnl_unlock();
return rc;
}
@ -358,24 +345,18 @@ static void bnxt_re_fill_fw_msg(struct bnxt_fw_msg *fw_msg, void *msg,
fw_msg->timeout = timeout;
}
static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id,
bool lock_wait)
static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id)
{
struct bnxt_en_dev *en_dev = rdev->en_dev;
struct hwrm_ring_free_input req = {0};
struct hwrm_ring_free_output resp;
struct bnxt_fw_msg fw_msg;
bool do_unlock = false;
int rc = -EINVAL;
if (!en_dev)
return rc;
memset(&fw_msg, 0, sizeof(fw_msg));
if (lock_wait) {
rtnl_lock();
do_unlock = true;
}
bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_FREE, -1, -1);
req.ring_type = RING_ALLOC_REQ_RING_TYPE_L2_CMPL;
@ -386,8 +367,6 @@ static int bnxt_re_net_ring_free(struct bnxt_re_dev *rdev, u16 fw_ring_id,
if (rc)
dev_err(rdev_to_dev(rdev),
"Failed to free HW ring:%d :%#x", req.ring_id, rc);
if (do_unlock)
rtnl_unlock();
return rc;
}
@ -405,7 +384,6 @@ static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr,
return rc;
memset(&fw_msg, 0, sizeof(fw_msg));
rtnl_lock();
bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_RING_ALLOC, -1, -1);
req.enables = 0;
req.page_tbl_addr = cpu_to_le64(dma_arr[0]);
@ -426,27 +404,21 @@ static int bnxt_re_net_ring_alloc(struct bnxt_re_dev *rdev, dma_addr_t *dma_arr,
if (!rc)
*fw_ring_id = le16_to_cpu(resp.ring_id);
rtnl_unlock();
return rc;
}
static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
u32 fw_stats_ctx_id, bool lock_wait)
u32 fw_stats_ctx_id)
{
struct bnxt_en_dev *en_dev = rdev->en_dev;
struct hwrm_stat_ctx_free_input req = {0};
struct bnxt_fw_msg fw_msg;
bool do_unlock = false;
int rc = -EINVAL;
if (!en_dev)
return rc;
memset(&fw_msg, 0, sizeof(fw_msg));
if (lock_wait) {
rtnl_lock();
do_unlock = true;
}
bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_FREE, -1, -1);
req.stat_ctx_id = cpu_to_le32(fw_stats_ctx_id);
@ -457,8 +429,6 @@ static int bnxt_re_net_stats_ctx_free(struct bnxt_re_dev *rdev,
dev_err(rdev_to_dev(rdev),
"Failed to free HW stats context %#x", rc);
if (do_unlock)
rtnl_unlock();
return rc;
}
@ -478,7 +448,6 @@ static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
return rc;
memset(&fw_msg, 0, sizeof(fw_msg));
rtnl_lock();
bnxt_re_init_hwrm_hdr(rdev, (void *)&req, HWRM_STAT_CTX_ALLOC, -1, -1);
req.update_period_ms = cpu_to_le32(1000);
@ -490,7 +459,6 @@ static int bnxt_re_net_stats_ctx_alloc(struct bnxt_re_dev *rdev,
if (!rc)
*fw_stats_ctx_id = le32_to_cpu(resp.stat_ctx_id);
rtnl_unlock();
return rc;
}
@ -929,19 +897,19 @@ fail:
return rc;
}
static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev, bool lock_wait)
static void bnxt_re_free_nq_res(struct bnxt_re_dev *rdev)
{
int i;
for (i = 0; i < rdev->num_msix - 1; i++) {
bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id, lock_wait);
bnxt_re_net_ring_free(rdev, rdev->nq[i].ring_id);
bnxt_qplib_free_nq(&rdev->nq[i]);
}
}
static void bnxt_re_free_res(struct bnxt_re_dev *rdev, bool lock_wait)
static void bnxt_re_free_res(struct bnxt_re_dev *rdev)
{
bnxt_re_free_nq_res(rdev, lock_wait);
bnxt_re_free_nq_res(rdev);
if (rdev->qplib_res.dpi_tbl.max) {
bnxt_qplib_dealloc_dpi(&rdev->qplib_res,
@ -1219,7 +1187,7 @@ static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
return 0;
}
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev)
{
int i, rc;
@ -1234,28 +1202,27 @@ static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
cancel_delayed_work(&rdev->worker);
bnxt_re_cleanup_res(rdev);
bnxt_re_free_res(rdev, lock_wait);
bnxt_re_free_res(rdev);
if (test_and_clear_bit(BNXT_RE_FLAG_RCFW_CHANNEL_EN, &rdev->flags)) {
rc = bnxt_qplib_deinit_rcfw(&rdev->rcfw);
if (rc)
dev_warn(rdev_to_dev(rdev),
"Failed to deinitialize RCFW: %#x", rc);
bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id,
lock_wait);
bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);
bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, lock_wait);
bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id);
bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
}
if (test_and_clear_bit(BNXT_RE_FLAG_GOT_MSIX, &rdev->flags)) {
rc = bnxt_re_free_msix(rdev, lock_wait);
rc = bnxt_re_free_msix(rdev);
if (rc)
dev_warn(rdev_to_dev(rdev),
"Failed to free MSI-X vectors: %#x", rc);
}
if (test_and_clear_bit(BNXT_RE_FLAG_NETDEV_REGISTERED, &rdev->flags)) {
rc = bnxt_re_unregister_netdev(rdev, lock_wait);
rc = bnxt_re_unregister_netdev(rdev);
if (rc)
dev_warn(rdev_to_dev(rdev),
"Failed to unregister with netdev: %#x", rc);
@ -1276,6 +1243,12 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
{
int i, j, rc;
bool locked;
/* Acquire rtnl lock through out this function */
rtnl_lock();
locked = true;
/* Registered a new RoCE device instance to netdev */
rc = bnxt_re_register_netdev(rdev);
if (rc) {
@ -1374,12 +1347,16 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
schedule_delayed_work(&rdev->worker, msecs_to_jiffies(30000));
}
rtnl_unlock();
locked = false;
/* Register ib dev */
rc = bnxt_re_register_ib(rdev);
if (rc) {
pr_err("Failed to register with IB: %#x\n", rc);
goto fail;
}
set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
dev_info(rdev_to_dev(rdev), "Device registered successfully");
for (i = 0; i < ARRAY_SIZE(bnxt_re_attributes); i++) {
rc = device_create_file(&rdev->ibdev.dev,
@ -1395,7 +1372,6 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
goto fail;
}
}
set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
ib_get_eth_speed(&rdev->ibdev, 1, &rdev->active_speed,
&rdev->active_width);
set_bit(BNXT_RE_FLAG_ISSUE_ROCE_STATS, &rdev->flags);
@ -1404,17 +1380,21 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
return 0;
free_sctx:
bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id, true);
bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);
free_ctx:
bnxt_qplib_free_ctx(rdev->en_dev->pdev, &rdev->qplib_ctx);
disable_rcfw:
bnxt_qplib_disable_rcfw_channel(&rdev->rcfw);
free_ring:
bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id, true);
bnxt_re_net_ring_free(rdev, rdev->rcfw.creq_ring_id);
free_rcfw:
bnxt_qplib_free_rcfw_channel(&rdev->rcfw);
fail:
bnxt_re_ib_unreg(rdev, true);
if (!locked)
rtnl_lock();
bnxt_re_ib_unreg(rdev);
rtnl_unlock();
return rc;
}
@ -1567,7 +1547,7 @@ static int bnxt_re_netdev_event(struct notifier_block *notifier,
*/
if (atomic_read(&rdev->sched_count) > 0)
goto exit;
bnxt_re_ib_unreg(rdev, false);
bnxt_re_ib_unreg(rdev);
bnxt_re_remove_one(rdev);
bnxt_re_dev_unreg(rdev);
break;
@ -1646,7 +1626,10 @@ static void __exit bnxt_re_mod_exit(void)
*/
flush_workqueue(bnxt_re_wq);
bnxt_re_dev_stop(rdev);
bnxt_re_ib_unreg(rdev, true);
/* Acquire the rtnl_lock as the L2 resources are freed here */
rtnl_lock();
bnxt_re_ib_unreg(rdev);
rtnl_unlock();
bnxt_re_remove_one(rdev);
bnxt_re_dev_unreg(rdev);
}

6
drivers/infiniband/hw/hfi1/chip.c
View File

@ -6733,6 +6733,7 @@ void start_freeze_handling(struct hfi1_pportdata *ppd, int flags)
struct hfi1_devdata *dd = ppd->dd;
struct send_context *sc;
int i;
int sc_flags;
if (flags & FREEZE_SELF)
write_csr(dd, CCE_CTRL, CCE_CTRL_SPC_FREEZE_SMASK);
@ -6743,11 +6744,13 @@ void start_freeze_handling(struct hfi1_pportdata *ppd, int flags)
/* notify all SDMA engines that they are going into a freeze */
sdma_freeze_notify(dd, !!(flags & FREEZE_LINK_DOWN));
sc_flags = SCF_FROZEN | SCF_HALTED | (flags & FREEZE_LINK_DOWN ?
SCF_LINK_DOWN : 0);
/* do halt pre-handling on all enabled send contexts */
for (i = 0; i < dd->num_send_contexts; i++) {
sc = dd->send_contexts[i].sc;
if (sc && (sc->flags & SCF_ENABLED))
sc_stop(sc, SCF_FROZEN | SCF_HALTED);
sc_stop(sc, sc_flags);
}
/* Send context are frozen. Notify user space */
@ -10674,6 +10677,7 @@ int set_link_state(struct hfi1_pportdata *ppd, u32 state)
add_rcvctrl(dd, RCV_CTRL_RCV_PORT_ENABLE_SMASK);
handle_linkup_change(dd, 1);
pio_kernel_linkup(dd);
/*
* After link up, a new link width will have been set.

51
drivers/infiniband/hw/hfi1/pio.c
View File

@ -86,6 +86,7 @@ void pio_send_control(struct hfi1_devdata *dd, int op)
unsigned long flags;
int write = 1; /* write sendctrl back */
int flush = 0; /* re-read sendctrl to make sure it is flushed */
int i;
spin_lock_irqsave(&dd->sendctrl_lock, flags);
@ -95,9 +96,13 @@ void pio_send_control(struct hfi1_devdata *dd, int op)
reg |= SEND_CTRL_SEND_ENABLE_SMASK;
/* Fall through */
case PSC_DATA_VL_ENABLE:
mask = 0;
for (i = 0; i < ARRAY_SIZE(dd->vld); i++)
if (!dd->vld[i].mtu)
mask |= BIT_ULL(i);
/* Disallow sending on VLs not enabled */
mask = (((~0ull) << num_vls) & SEND_CTRL_UNSUPPORTED_VL_MASK) <<
SEND_CTRL_UNSUPPORTED_VL_SHIFT;
mask = (mask & SEND_CTRL_UNSUPPORTED_VL_MASK) <<
SEND_CTRL_UNSUPPORTED_VL_SHIFT;
reg = (reg & ~SEND_CTRL_UNSUPPORTED_VL_SMASK) | mask;
break;
case PSC_GLOBAL_DISABLE:
@ -921,20 +926,18 @@ void sc_free(struct send_context *sc)
void sc_disable(struct send_context *sc)
{
u64 reg;
unsigned long flags;
struct pio_buf *pbuf;
if (!sc)
return;
/* do all steps, even if already disabled */
spin_lock_irqsave(&sc->alloc_lock, flags);
spin_lock_irq(&sc->alloc_lock);
reg = read_kctxt_csr(sc->dd, sc->hw_context, SC(CTRL));
reg &= ~SC(CTRL_CTXT_ENABLE_SMASK);
sc->flags &= ~SCF_ENABLED;
sc_wait_for_packet_egress(sc, 1);
write_kctxt_csr(sc->dd, sc->hw_context, SC(CTRL), reg);
spin_unlock_irqrestore(&sc->alloc_lock, flags);
/*
* Flush any waiters. Once the context is disabled,
@ -944,7 +947,7 @@ void sc_disable(struct send_context *sc)
* proceed with the flush.
*/
udelay(1);
spin_lock_irqsave(&sc->release_lock, flags);
spin_lock(&sc->release_lock);
if (sc->sr) { /* this context has a shadow ring */
while (sc->sr_tail != sc->sr_head) {
pbuf = &sc->sr[sc->sr_tail].pbuf;
@ -955,7 +958,8 @@ void sc_disable(struct send_context *sc)
sc->sr_tail = 0;
}
}
spin_unlock_irqrestore(&sc->release_lock, flags);
spin_unlock(&sc->release_lock);
spin_unlock_irq(&sc->alloc_lock);
}
/* return SendEgressCtxtStatus.PacketOccupancy */
@ -1178,11 +1182,39 @@ void pio_kernel_unfreeze(struct hfi1_devdata *dd)
sc = dd->send_contexts[i].sc;
if (!sc || !(sc->flags & SCF_FROZEN) || sc->type == SC_USER)
continue;
if (sc->flags & SCF_LINK_DOWN)
continue;
sc_enable(sc); /* will clear the sc frozen flag */
}
}
/**
* pio_kernel_linkup() - Re-enable send contexts after linkup event
* @dd: valid devive data
*
* When the link goes down, the freeze path is taken. However, a link down
* event is different from a freeze because if the send context is re-enabled
* whowever is sending data will start sending data again, which will hang
* any QP that is sending data.
*
* The freeze path now looks at the type of event that occurs and takes this
* path for link down event.
*/
void pio_kernel_linkup(struct hfi1_devdata *dd)
{
struct send_context *sc;
int i;
for (i = 0; i < dd->num_send_contexts; i++) {
sc = dd->send_contexts[i].sc;
if (!sc || !(sc->flags & SCF_LINK_DOWN) || sc->type == SC_USER)
continue;
sc_enable(sc); /* will clear the sc link down flag */
}
}
/*
* Wait for the SendPioInitCtxt.PioInitInProgress bit to clear.
* Returns:
@ -1382,11 +1414,10 @@ void sc_stop(struct send_context *sc, int flag)
{
unsigned long flags;
/* mark the context */
sc->flags |= flag;
/* stop buffer allocations */
spin_lock_irqsave(&sc->alloc_lock, flags);
/* mark the context */
sc->flags |= flag;
sc->flags &= ~SCF_ENABLED;
spin_unlock_irqrestore(&sc->alloc_lock, flags);
wake_up(&sc->halt_wait);

2
drivers/infiniband/hw/hfi1/pio.h
View File

@ -139,6 +139,7 @@ struct send_context {
#define SCF_IN_FREE 0x02
#define SCF_HALTED 0x04
#define SCF_FROZEN 0x08
#define SCF_LINK_DOWN 0x10
struct send_context_info {
struct send_context *sc; /* allocated working context */
@ -306,6 +307,7 @@ void set_pio_integrity(struct send_context *sc);
void pio_reset_all(struct hfi1_devdata *dd);
void pio_freeze(struct hfi1_devdata *dd);
void pio_kernel_unfreeze(struct hfi1_devdata *dd);
void pio_kernel_linkup(struct hfi1_devdata *dd);
/* global PIO send control operations */
#define PSC_GLOBAL_ENABLE 0

2
drivers/infiniband/hw/hfi1/user_sdma.c
View File

@ -828,7 +828,7 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts)
if (READ_ONCE(iovec->offset) == iovec->iov.iov_len) {
if (++req->iov_idx == req->data_iovs) {
ret = -EFAULT;
goto free_txreq;
goto free_tx;
}
iovec = &req->iovs[req->iov_idx];
WARN_ON(iovec->offset);

8
drivers/infiniband/hw/hfi1/verbs.c
View File

@ -1582,6 +1582,7 @@ static int hfi1_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr)
struct hfi1_pportdata *ppd;
struct hfi1_devdata *dd;
u8 sc5;
u8 sl;
if (hfi1_check_mcast(rdma_ah_get_dlid(ah_attr)) &&
!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH))
@ -1590,8 +1591,13 @@ static int hfi1_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr)
/* test the mapping for validity */
ibp = to_iport(ibdev, rdma_ah_get_port_num(ah_attr));
ppd = ppd_from_ibp(ibp);
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
dd = dd_from_ppd(ppd);
sl = rdma_ah_get_sl(ah_attr);
if (sl >= ARRAY_SIZE(ibp->sl_to_sc))
return -EINVAL;
sc5 = ibp->sl_to_sc[sl];
if (sc_to_vlt(dd, sc5) > num_vls && sc_to_vlt(dd, sc5) != 0xf)
return -EINVAL;
return 0;

5
drivers/infiniband/hw/mlx5/devx.c
View File

@ -723,6 +723,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
struct mlx5_ib_ucontext *c = to_mucontext(uobj->context);
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
struct devx_obj *obj;
int err;
@ -754,10 +755,12 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
if (err)
goto obj_free;
goto obj_destroy;
return 0;
obj_destroy:
mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
obj_free:
kfree(obj);
return err;

6
drivers/infiniband/ulp/srp/ib_srp.c
View File

@ -2951,7 +2951,7 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
{
struct srp_target_port *target = host_to_target(scmnd->device->host);
struct srp_rdma_ch *ch;
int i;
int i, j;
u8 status;
shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n");
@ -2965,8 +2965,8 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
for (i = 0; i < target->ch_count; i++) {
ch = &target->ch[i];
for (i = 0; i < target->req_ring_size; ++i) {
struct srp_request *req = &ch->req_ring[i];
for (j = 0; j < target->req_ring_size; ++j) {
struct srp_request *req = &ch->req_ring[j];
srp_finish_req(ch, req, scmnd->device, DID_RESET << 16);
}

1
drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
View File

@ -753,7 +753,6 @@ struct cpl_abort_req_rss {
};
struct cpl_abort_req_rss6 {
WR_HDR;
union opcode_tid ot;
__be32 srqidx_status;
};