From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
This patch gives the variables holding the CAN receiver and the receiver
list a better name by renaming them from "r to "rcv" and "rl" to
"recv_list".
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
net/can/af_can.c | 101 +++++++++++++++++++++++------------------------
1 file changed, 50 insertions(+), 51 deletions(-)
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 7b260af188c6..55eaf85ee2ca 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -462,8 +462,8 @@ int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
canid_t mask, void (*func)(struct sk_buff *, void *),
void *data, char *ident, struct sock *sk)
{
- struct receiver *r;
- struct hlist_head *rl;
+ struct receiver *rcv;
+ struct hlist_head *rcv_list;
struct can_dev_rcv_lists *dev_rcv_lists;
struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
int err = 0;
@@ -476,32 +476,32 @@ int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
if (dev && !net_eq(net, dev_net(dev)))
return -ENODEV;
- r = kmem_cache_alloc(rcv_cache, GFP_KERNEL);
- if (!r)
+ rcv = kmem_cache_alloc(rcv_cache, GFP_KERNEL);
+ if (!rcv)
return -ENOMEM;
spin_lock(&net->can.rcvlists_lock);
dev_rcv_lists = can_dev_rcv_lists_find(net, dev);
if (dev_rcv_lists) {
- rl = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
+ rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
- r->can_id = can_id;
- r->mask = mask;
- r->matches = 0;
- r->func = func;
- r->data = data;
- r->ident = ident;
- r->sk = sk;
+ rcv->can_id = can_id;
+ rcv->mask = mask;
+ rcv->matches = 0;
+ rcv->func = func;
+ rcv->data = data;
+ rcv->ident = ident;
+ rcv->sk = sk;
- hlist_add_head_rcu(&r->list, rl);
+ hlist_add_head_rcu(&rcv->list, rcv_list);
dev_rcv_lists->entries++;
rcv_lists_stats->rcv_entries++;
if (rcv_lists_stats->rcv_entries_max < rcv_lists_stats->rcv_entries)
rcv_lists_stats->rcv_entries_max = rcv_lists_stats->rcv_entries;
} else {
- kmem_cache_free(rcv_cache, r);
+ kmem_cache_free(rcv_cache, rcv);
err = -ENODEV;
}
@@ -516,10 +516,10 @@ EXPORT_SYMBOL(can_rx_register);
*/
static void can_rx_delete_receiver(struct rcu_head *rp)
{
- struct receiver *r = container_of(rp, struct receiver, rcu);
- struct sock *sk = r->sk;
+ struct receiver *rcv = container_of(rp, struct receiver, rcu);
+ struct sock *sk = rcv->sk;
- kmem_cache_free(rcv_cache, r);
+ kmem_cache_free(rcv_cache, rcv);
if (sk)
sock_put(sk);
}
@@ -539,8 +539,8 @@ void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
canid_t mask, void (*func)(struct sk_buff *, void *),
void *data)
{
- struct receiver *r = NULL;
- struct hlist_head *rl;
+ struct receiver *rcv = NULL;
+ struct hlist_head *rcv_list;
struct can_rcv_lists_stats *rcv_lists_stats = net->can.rcv_lists_stats;
struct can_dev_rcv_lists *dev_rcv_lists;
@@ -560,31 +560,30 @@ void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
goto out;
}
- rl = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
+ rcv_list = can_rcv_list_find(&can_id, &mask, dev_rcv_lists);
/*
* Search the receiver list for the item to delete. This should
* exist, since no receiver may be unregistered that hasn't
* been registered before.
*/
- hlist_for_each_entry_rcu(r, rl, list) {
- if (r->can_id == can_id && r->mask == mask &&
- r->func == func && r->data == data)
+ hlist_for_each_entry_rcu(rcv, rcv_list, list) {
+ if (rcv->can_id == can_id && rcv->mask == mask &&
+ rcv->func == func && rcv->data == data)
break;
}
/*
* Check for bugs in CAN protocol implementations using af_can.c:
- * 'r' will be NULL if no matching list item was found for removal.
+ * 'rcv' will be NULL if no matching list item was found for removal.
*/
-
- if (!r) {
+ if (!rcv) {
WARN(1, "BUG: receive list entry not found for dev %s, "
"id %03X, mask %03X\n", DNAME(dev), can_id, mask);
goto out;
}
- hlist_del_rcu(&r->list);
+ hlist_del_rcu(&rcv->list);
dev_rcv_lists->entries--;
if (rcv_lists_stats->rcv_entries > 0)
@@ -600,23 +599,23 @@ void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
spin_unlock(&net->can.rcvlists_lock);
/* schedule the receiver item for deletion */
- if (r) {
- if (r->sk)
- sock_hold(r->sk);
- call_rcu(&r->rcu, can_rx_delete_receiver);
+ if (rcv) {
+ if (rcv->sk)
+ sock_hold(rcv->sk);
+ call_rcu(&rcv->rcu, can_rx_delete_receiver);
}
}
EXPORT_SYMBOL(can_rx_unregister);
-static inline void deliver(struct sk_buff *skb, struct receiver *r)
+static inline void deliver(struct sk_buff *skb, struct receiver *rcv)
{
- r->func(skb, r->data);
- r->matches++;
+ rcv->func(skb, rcv->data);
+ rcv->matches++;
}
static int can_rcv_filter(struct can_dev_rcv_lists *dev_rcv_lists, struct sk_buff *skb)
{
- struct receiver *r;
+ struct receiver *rcv;
int matches = 0;
struct can_frame *cf = (struct can_frame *)skb->data;
canid_t can_id = cf->can_id;
@@ -626,9 +625,9 @@ static int can_rcv_filter(struct can_dev_rcv_lists *dev_rcv_lists, struct sk_buf
if (can_id & CAN_ERR_FLAG) {
/* check for error message frame entries only */
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx[RX_ERR], list) {
- if (can_id & r->mask) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx[RX_ERR], list) {
+ if (can_id & rcv->mask) {
+ deliver(skb, rcv);
matches++;
}
}
@@ -636,23 +635,23 @@ static int can_rcv_filter(struct can_dev_rcv_lists *dev_rcv_lists, struct sk_buf
}
/* check for unfiltered entries */
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx[RX_ALL], list) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx[RX_ALL], list) {
+ deliver(skb, rcv);
matches++;
}
/* check for can_id/mask entries */
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx[RX_FIL], list) {
- if ((can_id & r->mask) == r->can_id) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx[RX_FIL], list) {
+ if ((can_id & rcv->mask) == rcv->can_id) {
+ deliver(skb, rcv);
matches++;
}
}
/* check for inverted can_id/mask entries */
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx[RX_INV], list) {
- if ((can_id & r->mask) != r->can_id) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx[RX_INV], list) {
+ if ((can_id & rcv->mask) != rcv->can_id) {
+ deliver(skb, rcv);
matches++;
}
}
@@ -662,16 +661,16 @@ static int can_rcv_filter(struct can_dev_rcv_lists *dev_rcv_lists, struct sk_buf
return matches;
if (can_id & CAN_EFF_FLAG) {
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx_eff[effhash(can_id)], list) {
- if (r->can_id == can_id) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_eff[effhash(can_id)], list) {
+ if (rcv->can_id == can_id) {
+ deliver(skb, rcv);
matches++;
}
}
} else {
can_id &= CAN_SFF_MASK;
- hlist_for_each_entry_rcu(r, &dev_rcv_lists->rx_sff[can_id], list) {
- deliver(skb, r);
+ hlist_for_each_entry_rcu(rcv, &dev_rcv_lists->rx_sff[can_id], list) {
+ deliver(skb, rcv);
matches++;
}
}
--
2.19.0
