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Diffstat (limited to 'net/ipv4/igmp.c')
-rw-r--r--net/ipv4/igmp.c50
1 files changed, 24 insertions, 26 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index d41e5de79a82..76c08402c933 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1899,8 +1899,9 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
err = -EADDRNOTAVAIL;
for (pmc=inet->mc_list; pmc; pmc=pmc->next) {
- if (pmc->multi.imr_multiaddr.s_addr == imr.imr_multiaddr.s_addr
- && pmc->multi.imr_ifindex == imr.imr_ifindex)
+ if ((pmc->multi.imr_multiaddr.s_addr ==
+ imr.imr_multiaddr.s_addr) &&
+ (pmc->multi.imr_ifindex == imr.imr_ifindex))
break;
}
if (!pmc) { /* must have a prior join */
@@ -2311,9 +2312,10 @@ static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
state->in_dev = NULL;
- for_each_netdev(net, state->dev) {
+ for_each_netdev_rcu(net, state->dev) {
struct in_device *in_dev;
- in_dev = in_dev_get(state->dev);
+
+ in_dev = __in_dev_get_rcu(state->dev);
if (!in_dev)
continue;
read_lock(&in_dev->mc_list_lock);
@@ -2323,7 +2325,6 @@ static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
break;
}
read_unlock(&in_dev->mc_list_lock);
- in_dev_put(in_dev);
}
return im;
}
@@ -2333,16 +2334,15 @@ static struct ip_mc_list *igmp_mc_get_next(struct seq_file *seq, struct ip_mc_li
struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
im = im->next;
while (!im) {
- if (likely(state->in_dev != NULL)) {
+ if (likely(state->in_dev != NULL))
read_unlock(&state->in_dev->mc_list_lock);
- in_dev_put(state->in_dev);
- }
- state->dev = next_net_device(state->dev);
+
+ state->dev = next_net_device_rcu(state->dev);
if (!state->dev) {
state->in_dev = NULL;
break;
}
- state->in_dev = in_dev_get(state->dev);
+ state->in_dev = __in_dev_get_rcu(state->dev);
if (!state->in_dev)
continue;
read_lock(&state->in_dev->mc_list_lock);
@@ -2361,9 +2361,9 @@ static struct ip_mc_list *igmp_mc_get_idx(struct seq_file *seq, loff_t pos)
}
static void *igmp_mc_seq_start(struct seq_file *seq, loff_t *pos)
- __acquires(dev_base_lock)
+ __acquires(rcu)
{
- read_lock(&dev_base_lock);
+ rcu_read_lock();
return *pos ? igmp_mc_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}
@@ -2379,16 +2379,15 @@ static void *igmp_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
}
static void igmp_mc_seq_stop(struct seq_file *seq, void *v)
- __releases(dev_base_lock)
+ __releases(rcu)
{
struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
if (likely(state->in_dev != NULL)) {
read_unlock(&state->in_dev->mc_list_lock);
- in_dev_put(state->in_dev);
state->in_dev = NULL;
}
state->dev = NULL;
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
static int igmp_mc_seq_show(struct seq_file *seq, void *v)
@@ -2462,9 +2461,9 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
state->idev = NULL;
state->im = NULL;
- for_each_netdev(net, state->dev) {
+ for_each_netdev_rcu(net, state->dev) {
struct in_device *idev;
- idev = in_dev_get(state->dev);
+ idev = __in_dev_get_rcu(state->dev);
if (unlikely(idev == NULL))
continue;
read_lock(&idev->mc_list_lock);
@@ -2480,7 +2479,6 @@ static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
spin_unlock_bh(&im->lock);
}
read_unlock(&idev->mc_list_lock);
- in_dev_put(idev);
}
return psf;
}
@@ -2494,16 +2492,15 @@ static struct ip_sf_list *igmp_mcf_get_next(struct seq_file *seq, struct ip_sf_l
spin_unlock_bh(&state->im->lock);
state->im = state->im->next;
while (!state->im) {
- if (likely(state->idev != NULL)) {
+ if (likely(state->idev != NULL))
read_unlock(&state->idev->mc_list_lock);
- in_dev_put(state->idev);
- }
- state->dev = next_net_device(state->dev);
+
+ state->dev = next_net_device_rcu(state->dev);
if (!state->dev) {
state->idev = NULL;
goto out;
}
- state->idev = in_dev_get(state->dev);
+ state->idev = __in_dev_get_rcu(state->dev);
if (!state->idev)
continue;
read_lock(&state->idev->mc_list_lock);
@@ -2528,8 +2525,9 @@ static struct ip_sf_list *igmp_mcf_get_idx(struct seq_file *seq, loff_t pos)
}
static void *igmp_mcf_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(rcu)
{
- read_lock(&dev_base_lock);
+ rcu_read_lock();
return *pos ? igmp_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}
@@ -2545,6 +2543,7 @@ static void *igmp_mcf_seq_next(struct seq_file *seq, void *v, loff_t *pos)
}
static void igmp_mcf_seq_stop(struct seq_file *seq, void *v)
+ __releases(rcu)
{
struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq);
if (likely(state->im != NULL)) {
@@ -2553,11 +2552,10 @@ static void igmp_mcf_seq_stop(struct seq_file *seq, void *v)
}
if (likely(state->idev != NULL)) {
read_unlock(&state->idev->mc_list_lock);
- in_dev_put(state->idev);
state->idev = NULL;
}
state->dev = NULL;
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
}
static int igmp_mcf_seq_show(struct seq_file *seq, void *v)