system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-20 02:57:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

IB/cm: remove cm_id_priv->id.service_mask and service_mask parameter of cm_init_listen()

Browse source 
The service_mask is always ~cpu_to_be64(0), so the result is always
a NOP when it is &'d with a service_id. Remove it for simplicity.

Link: https://lore.kernel.org/r/20220819090859.957943-3-markzhang@nvidia.com
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Mark Zhang 2022-08-19 12:08:58 +03:00 committed by Leon Romanovsky
parent 91a3f14ec9
commit a461b746c5
2 changed files with 8 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
drivers/infiniband/core/cm.c
View file

@ -617,7 +617,6 @@ static struct cm_id_private *cm_insert_listen(struct cm_id_private *cm_id_priv,
struct rb_node *parent = NULL;
struct cm_id_private *cur_cm_id_priv;
__be64 service_id = cm_id_priv->id.service_id;
__be64 service_mask = cm_id_priv->id.service_mask;
unsigned long flags;
spin_lock_irqsave(&cm.lock, flags);
@ -625,8 +624,7 @@ static struct cm_id_private *cm_insert_listen(struct cm_id_private *cm_id_priv,
parent = *link;
cur_cm_id_priv = rb_entry(parent, struct cm_id_private,
service_node);
if ((cur_cm_id_priv->id.service_mask & service_id) ==
(service_mask & cur_cm_id_priv->id.service_id) &&
if ((service_id == cur_cm_id_priv->id.service_id) &&
(cm_id_priv->id.device == cur_cm_id_priv->id.device)) {
/*
* Sharing an ib_cm_id with different handlers is not
@ -670,8 +668,7 @@ static struct cm_id_private *cm_find_listen(struct ib_device *device,
while (node) {
cm_id_priv = rb_entry(node, struct cm_id_private, service_node);
if ((cm_id_priv->id.service_mask & service_id) ==
cm_id_priv->id.service_id &&
if ((service_id == cm_id_priv->id.service_id) &&
(cm_id_priv->id.device == device)) {
refcount_inc(&cm_id_priv->refcount);
return cm_id_priv;
@ -1158,22 +1155,17 @@ void ib_destroy_cm_id(struct ib_cm_id *cm_id)
}
EXPORT_SYMBOL(ib_destroy_cm_id);
static int cm_init_listen(struct cm_id_private *cm_id_priv, __be64 service_id,
__be64 service_mask)
static int cm_init_listen(struct cm_id_private *cm_id_priv, __be64 service_id)
{
service_mask = service_mask ? service_mask : ~cpu_to_be64(0);
service_id &= service_mask;
if ((service_id & IB_SERVICE_ID_AGN_MASK) == IB_CM_ASSIGN_SERVICE_ID &&
(service_id != IB_CM_ASSIGN_SERVICE_ID))
return -EINVAL;
if (service_id == IB_CM_ASSIGN_SERVICE_ID) {
if (service_id == IB_CM_ASSIGN_SERVICE_ID)
cm_id_priv->id.service_id = cpu_to_be64(cm.listen_service_id++);
cm_id_priv->id.service_mask = ~cpu_to_be64(0);
} else {
else
cm_id_priv->id.service_id = service_id;
cm_id_priv->id.service_mask = service_mask;
}
return 0;
}
@ -1199,7 +1191,7 @@ int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id)
goto out;
}
ret = cm_init_listen(cm_id_priv, service_id, 0);
ret = cm_init_listen(cm_id_priv, service_id);
if (ret)
goto out;
@ -1247,7 +1239,7 @@ struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
if (IS_ERR(cm_id_priv))
return ERR_CAST(cm_id_priv);
err = cm_init_listen(cm_id_priv, service_id, 0);
err = cm_init_listen(cm_id_priv, service_id);
if (err) {
ib_destroy_cm_id(&cm_id_priv->id);
return ERR_PTR(err);
@ -1518,7 +1510,6 @@ int ib_send_cm_req(struct ib_cm_id *cm_id,
}
}
cm_id->service_id = param->service_id;
cm_id->service_mask = ~cpu_to_be64(0);
cm_id_priv->timeout_ms = cm_convert_to_ms(
param->primary_path->packet_life_time) * 2 +
cm_convert_to_ms(
@ -2075,7 +2066,6 @@ static int cm_req_handler(struct cm_work *work)
cpu_to_be32(IBA_GET(CM_REQ_LOCAL_COMM_ID, req_msg));
cm_id_priv->id.service_id =
cpu_to_be64(IBA_GET(CM_REQ_SERVICE_ID, req_msg));
cm_id_priv->id.service_mask = ~cpu_to_be64(0);
cm_id_priv->tid = req_msg->hdr.tid;
cm_id_priv->timeout_ms = cm_convert_to_ms(
IBA_GET(CM_REQ_LOCAL_CM_RESPONSE_TIMEOUT, req_msg));
@ -3482,7 +3472,6 @@ int ib_send_cm_sidr_req(struct ib_cm_id *cm_id,
spin_lock_irqsave(&cm_id_priv->lock, flags);
cm_move_av_from_path(&cm_id_priv->av, &av);
cm_id->service_id = param->service_id;
cm_id->service_mask = ~cpu_to_be64(0);
cm_id_priv->timeout_ms = param->timeout_ms;
cm_id_priv->max_cm_retries = param->max_cm_retries;
if (cm_id->state != IB_CM_IDLE) {
@ -3557,7 +3546,6 @@ static int cm_sidr_req_handler(struct cm_work *work)
cpu_to_be32(IBA_GET(CM_SIDR_REQ_REQUESTID, sidr_req_msg));
cm_id_priv->id.service_id =
cpu_to_be64(IBA_GET(CM_SIDR_REQ_SERVICEID, sidr_req_msg));
cm_id_priv->id.service_mask = ~cpu_to_be64(0);
cm_id_priv->tid = sidr_req_msg->hdr.tid;
wc = work->mad_recv_wc->wc;

1
include/rdma/ib_cm.h
View file

@ -294,7 +294,6 @@ struct ib_cm_id {
void *context;
struct ib_device *device;
__be64 service_id;
__be64 service_mask;
enum ib_cm_state state; /* internal CM/debug use */
enum ib_cm_lap_state lap_state; /* internal CM/debug use */
__be32 local_id;