Commit ba22d84c authored by Hideaki Yoshifuji's avatar Hideaki Yoshifuji Committed by James Morris

[NET] convert /proc/net/mfilter6 to seq_file

parent f26e95cb
......@@ -2179,80 +2179,178 @@ static struct file_operations igmp6_mc_seq_fops = {
.release = seq_release_private,
};
static int ip6_mcf_read_proc(char *buffer, char **start, off_t offset,
int length, int *eof, void *data)
{
off_t pos=0, begin=0;
int len=0;
int first=1;
struct igmp6_mcf_iter_state {
struct net_device *dev;
struct inet6_dev *idev;
struct ifmcaddr6 *im;
};
read_lock(&dev_base_lock);
for (dev=dev_base; dev; dev=dev->next) {
struct inet6_dev *idev = in6_dev_get(dev);
struct ifmcaddr6 *imc;
#define igmp6_mcf_seq_private(seq) ((struct igmp6_mcf_iter_state *)&seq->private)
if (idev == NULL)
continue;
static inline struct ip6_sf_list *igmp6_mcf_get_first(struct seq_file *seq)
{
struct ip6_sf_list *psf = NULL;
struct ifmcaddr6 *im = NULL;
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
for (state->dev = dev_base, state->idev = NULL, state->im = NULL;
state->dev;
state->dev = state->dev->next) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (unlikely(idev == NULL))
continue;
read_lock_bh(&idev->lock);
im = idev->mc_list;
if (likely(im != NULL)) {
spin_lock_bh(&im->mca_lock);
psf = im->mca_sources;
if (likely(psf != NULL)) {
state->im = im;
state->idev = idev;
break;
}
spin_unlock_bh(&im->mca_lock);
}
read_unlock_bh(&idev->lock);
}
return psf;
}
static struct ip6_sf_list *igmp6_mcf_get_next(struct seq_file *seq, struct ip6_sf_list *psf)
{
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
psf = psf->sf_next;
while (!psf) {
spin_unlock_bh(&state->im->mca_lock);
state->im = state->im->next;
while (!state->im) {
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
in6_dev_put(state->idev);
}
state->dev = state->dev->next;
if (!state->dev) {
state->idev = NULL;
goto out;
}
state->idev = in6_dev_get(state->dev);
if (!state->idev)
continue;
read_lock_bh(&state->idev->lock);
state->im = state->idev->mc_list;
}
if (!state->im)
break;
spin_lock_bh(&state->im->mca_lock);
psf = state->im->mca_sources;
}
out:
return psf;
}
static struct ip6_sf_list *igmp6_mcf_get_idx(struct seq_file *seq, loff_t pos)
{
struct ip6_sf_list *psf = igmp6_mcf_get_first(seq);
if (psf)
while (pos && (psf = igmp6_mcf_get_next(seq, psf)) != NULL)
--pos;
return pos ? NULL : psf;
}
for (imc=idev->mc_list; imc; imc=imc->next) {
static void *igmp6_mcf_seq_start(struct seq_file *seq, loff_t *pos)
{
read_lock(&dev_base_lock);
return *pos ? igmp6_mcf_get_idx(seq, *pos) : (void *)1;
}
static void *igmp6_mcf_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct ip6_sf_list *psf;
unsigned long i;
if (v == (void *)1)
psf = igmp6_mcf_get_first(seq);
else
psf = igmp6_mcf_get_next(seq, v);
++*pos;
return psf;
}
spin_lock_bh(&imc->mca_lock);
for (psf=imc->mca_sources; psf; psf=psf->sf_next) {
if (first) {
len += sprintf(buffer+len, "%3s %6s "
static void igmp6_mcf_seq_stop(struct seq_file *seq, void *v)
{
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
if (likely(state->im != NULL))
spin_unlock_bh(&state->im->mca_lock);
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
in6_dev_put(state->idev);
}
read_unlock(&dev_base_lock);
}
static int igmp6_mcf_seq_show(struct seq_file *seq, void *v)
{
struct ip6_sf_list *psf = (struct ip6_sf_list *)v;
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
if (v == (void *)1) {
seq_printf(seq,
"%3s %6s "
"%32s %32s %6s %6s\n", "Idx",
"Device", "Multicast Address",
"Source Address", "INC", "EXC");
first = 0;
}
len += sprintf(buffer+len,"%3d %6.6s ",
dev->ifindex, dev->name);
for (i=0; i<16; i++)
len += sprintf(buffer+len, "%02x",
imc->mca_addr.s6_addr[i]);
buffer[len++] = ' ';
for (i=0; i<16; i++)
len += sprintf(buffer+len, "%02x",
psf->sf_addr.s6_addr[i]);
len += sprintf(buffer+len, " %6lu %6lu\n",
} else {
seq_printf(seq,
"%3d %6.6s "
"%04x%04x%04x%04x%04x%04x%04x%04x "
"%04x%04x%04x%04x%04x%04x%04x%04x "
"%6lu %6lu\n",
state->dev->ifindex, state->dev->name,
NIP6(state->im->mca_addr),
NIP6(psf->sf_addr),
psf->sf_count[MCAST_INCLUDE],
psf->sf_count[MCAST_EXCLUDE]);
pos = begin+len;
if (pos < offset) {
len=0;
begin=pos;
}
if (pos > offset+length) {
spin_unlock_bh(&imc->mca_lock);
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
goto done;
}
}
spin_unlock_bh(&imc->mca_lock);
}
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
}
*eof = 1;
return 0;
}
done:
read_unlock(&dev_base_lock);
static struct seq_operations igmp6_mcf_seq_ops = {
.start = igmp6_mcf_seq_start,
.next = igmp6_mcf_seq_next,
.stop = igmp6_mcf_seq_stop,
.show = igmp6_mcf_seq_show,
};
static int igmp6_mcf_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc = -ENOMEM;
struct igmp6_mcf_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
*start=buffer+(offset-begin);
len-=(offset-begin);
if(len>length)
len=length;
if (len<0)
len=0;
return len;
if (!s)
goto out;
rc = seq_open(file, &igmp6_mcf_seq_ops);
if (rc)
goto out_kfree;
seq = file->private_data;
seq->private = s;
memset(s, 0, sizeof(*s));
out:
return rc;
out_kfree:
kfree(s);
goto out;
}
static struct file_operations igmp6_mcf_seq_fops = {
.owner = THIS_MODULE,
.open = igmp6_mcf_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
#endif
int __init igmp6_init(struct net_proto_family *ops)
......@@ -2284,7 +2382,9 @@ int __init igmp6_init(struct net_proto_family *ops)
p = create_proc_entry("igmp6", S_IRUGO, proc_net);
if (p)
p->proc_fops = &igmp6_mc_seq_fops;
create_proc_read_entry("net/mcfilter6", 0, 0, ip6_mcf_read_proc, NULL);
p = create_proc_entry("mcfilter6", S_IRUGO, proc_net);
if (p)
p->proc_fops = &igmp6_mcf_seq_fops;
#endif
return 0;
......@@ -2295,6 +2395,7 @@ void igmp6_cleanup(void)
sock_release(igmp6_socket);
igmp6_socket = NULL; /* for safety */
#ifdef CONFIG_PROC_FS
proc_net_remove("mcfilter6");
proc_net_remove("igmp6");
#endif
}
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