int pfq_getsockopt(struct socket *sock,
int level, int optname,
char __user * optval, int __user * optlen)
{
struct pfq_sock *so = pfq_sk(sock->sk);
int len;
if (so == NULL)
return -EFAULT;
if (get_user(len, optlen))
return -EFAULT;
if (len < 0)
return -EINVAL;
switch(optname)
{
case Q_SO_GROUP_JOIN:
{
struct pfq_group_join group;
if (len != sizeof(group))
return -EINVAL;
if (copy_from_user(&group, optval, sizeof(group)))
return -EFAULT;
if (group.class_mask == 0) {
printk(KERN_INFO "[PFQ|%d] join error: bad class_mask (%lx)!\n", so->id.value, group.class_mask);
return -EINVAL;
}
if (group.gid == Q_ANY_GROUP) {
group.gid = pfq_join_free_group(so->id, group.class_mask, group.policy);
if (group.gid < 0)
return -EFAULT;
if (copy_to_user(optval, &group, len))
return -EFAULT;
}
else {
pfq_gid_t gid = { group.gid };
if (!pfq_get_group(gid)) {
printk(KERN_INFO "[PFQ|%d] group error: invalid group id %d!\n", so->id.value, gid.value);
return -EFAULT;
}
if (pfq_join_group(gid, so->id, group.class_mask, group.policy) < 0) {
printk(KERN_INFO "[PFQ|%d] join error: permission denied (gid=%d)!\n", so->id.value, group.gid);
return -EACCES;
}
}
pr_devel("[PFQ|%d] join: gid=%d class_mask=%lx\n", so->id.value, group.gid, group.class_mask);
} break;
case Q_SO_GET_ID:
{
if (len != sizeof(so->id.value))
return -EINVAL;
if (copy_to_user(optval, &so->id.value, sizeof(so->id.value)))
return -EFAULT;
} break;
case Q_SO_GET_STATUS:
{
int enabled;
if (len != sizeof(int))
return -EINVAL;
enabled = so->shmem.addr == NULL ? 0 : 1;
if (copy_to_user(optval, &enabled, sizeof(enabled)))
return -EFAULT;
} break;
case Q_SO_GET_STATS:
{
struct pfq_stats stat;
if (len != sizeof(struct pfq_stats))
return -EINVAL;
stat.recv = sparse_read(&so->rx_opt.stats.recv);
stat.lost = sparse_read(&so->rx_opt.stats.lost);
stat.drop = sparse_read(&so->rx_opt.stats.drop);
stat.frwd = 0;
stat.kern = 0;
stat.sent = sparse_read(&so->tx_opt.stats.sent);
stat.disc = sparse_read(&so->tx_opt.stats.disc);
if (copy_to_user(optval, &stat, sizeof(stat)))
return -EFAULT;
} break;
case Q_SO_GET_RX_TSTAMP:
{
if (len != sizeof(so->rx_opt.tstamp))
return -EINVAL;
if (copy_to_user(optval, &so->rx_opt.tstamp, sizeof(so->rx_opt.tstamp)))
return -EFAULT;
} break;
case Q_SO_GET_SHMEM_SIZE:
{
size_t size = pfq_shared_memory_size(so);
if (len != sizeof(size))
return -EINVAL;
if (copy_to_user(optval, &size, sizeof(size)))
return -EFAULT;
} break;
case Q_SO_GET_RX_CAPLEN:
{
if (len != sizeof(so->rx_opt.caplen))
return -EINVAL;
if (copy_to_user(optval, &so->rx_opt.caplen, sizeof(so->rx_opt.caplen)))
return -EFAULT;
} break;
case Q_SO_GET_TX_MAXLEN:
{
if (len != sizeof(max_len))
return -EINVAL;
if (copy_to_user(optval, &max_len, sizeof(max_len)))
return -EFAULT;
} break;
case Q_SO_GET_RX_SLOTS:
{
if (len != sizeof(so->rx_opt.queue_size))
return -EINVAL;
if (copy_to_user(optval, &so->rx_opt.queue_size, sizeof(so->rx_opt.queue_size)))
return -EFAULT;
} break;
case Q_SO_GET_TX_SLOTS:
{
if (len != sizeof(so->tx_opt.queue_size))
return -EINVAL;
if (copy_to_user(optval, &so->tx_opt.queue_size, sizeof(so->tx_opt.queue_size)))
return -EFAULT;
} break;
case Q_SO_GET_GROUPS:
{
unsigned long grps;
if(len != sizeof(unsigned long))
return -EINVAL;
grps = pfq_get_groups(so->id);
if (copy_to_user(optval, &grps, sizeof(grps)))
return -EFAULT;
} break;
case Q_SO_GET_GROUP_STATS:
{
struct pfq_group *g;
struct pfq_stats stat;
pfq_gid_t gid;
if (len != sizeof(stat))
return -EINVAL;
if (copy_from_user(&stat, optval, sizeof(stat)))
return -EFAULT;
gid.value = (int)stat.recv;
g = pfq_get_group(gid);
if (g == NULL) {
printk(KERN_INFO "[PFQ|%d] group error: invalid group id %d!\n", so->id.value, gid.value);
return -EFAULT;
}
if (pfq_group_is_free(gid)) {
printk(KERN_INFO "[PFQ|%d] group stats error: gid=%d is a free group!\n", so->id.value, gid.value);
return -EACCES;
}
if (!pfq_group_access(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] group stats error: gid=%d permission denied!\n", so->id.value, gid.value);
return -EACCES;
}
stat.recv = sparse_read(&g->stats.recv);
stat.drop = sparse_read(&g->stats.drop);
stat.frwd = sparse_read(&g->stats.frwd);
stat.kern = sparse_read(&g->stats.kern);
stat.lost = 0;
stat.sent = 0;
stat.disc = 0;
if (copy_to_user(optval, &stat, sizeof(stat)))
return -EFAULT;
} break;
case Q_SO_GET_GROUP_COUNTERS:
{
struct pfq_group *g;
struct pfq_counters cs;
pfq_gid_t gid;
int i;
if (len != sizeof(cs))
return -EINVAL;
if (copy_from_user(&cs, optval, sizeof(cs)))
return -EFAULT;
gid.value = (int)cs.counter[0];
g = pfq_get_group(gid);
if (g == NULL) {
printk(KERN_INFO "[PFQ|%d] group error: invalid group id %d!\n", so->id.value, gid.value);
return -EFAULT;
}
/* check whether the group is joinable.. */
if (!pfq_group_policy_access(gid, so->id, Q_POLICY_GROUP_UNDEFINED)) {
printk(KERN_INFO "[PFQ|%d] group error: permission denied (gid=%d)!\n", so->id.value, gid.value);
return -EACCES;
}
for(i = 0; i < Q_MAX_COUNTERS; i++)
{
cs.counter[i] = sparse_read(&g->context.counter[i]);
}
if (copy_to_user(optval, &cs, sizeof(cs)))
return -EFAULT;
} break;
default:
return -EFAULT;
}
return 0;
}
int pfq_getsockopt(struct socket *sock,
int level, int optname,
char __user * optval, int __user * optlen)
{
struct pfq_sock *so = pfq_sk(sock->sk);
int len;
if (so == NULL)
return -EFAULT;
if (get_user(len, optlen))
return -EFAULT;
if (len < 0)
return -EINVAL;
switch(optname)
{
case Q_SO_GROUP_JOIN:
{
struct pfq_group_join group;
if (len != sizeof(group))
return -EINVAL;
if (copy_from_user(&group, optval, sizeof(group)))
return -EFAULT;
if (group.class_mask == 0) {
printk(KERN_INFO "[PFQ|%d] join group error: bad class_mask (%lx)!\n",
so->id, group.class_mask);
return -EINVAL;
}
if (group.gid == Q_ANY_GROUP) {
group.gid = pfq_join_free_group(so->id, group.class_mask, group.policy);
if (group.gid < 0)
return -EFAULT;
if (copy_to_user(optval, &group, len))
return -EFAULT;
}
else {
pfq_gid_t gid = (__force pfq_gid_t)group.gid;
if (!pfq_get_group(gid)) {
printk(KERN_INFO "[PFQ|%d] join group error: invalid group id %d!\n",
so->id, gid);
return -EFAULT;
}
if (pfq_join_group(gid, so->id, group.class_mask, group.policy) < 0) {
printk(KERN_INFO "[PFQ|%d] join group error: permission denied (gid=%d)!\n",
so->id, group.gid);
return -EACCES;
}
}
pr_devel("[PFQ|%d] join group: gid=%d class_mask=%lx policy=%d\n",
so->id, group.gid, group.class_mask, group.policy);
} break;
case Q_SO_GET_ID:
{
int ver;
if (len != sizeof(so->id))
return -EINVAL;
if (copy_from_user(&ver, optval, sizeof(ver)))
return -EFAULT;
if (ver != PFQ_VERSION_CODE) {
printk(KERN_INFO "[PFQ] version mismatch: kernel version %d.%d.%d, library version = %d.%d.%d!\n",
PFQ_MAJOR(PFQ_VERSION_CODE),
PFQ_MINOR(PFQ_VERSION_CODE),
PFQ_PATCHLEVEL(PFQ_VERSION_CODE),
PFQ_MAJOR(ver),
PFQ_MINOR(ver),
PFQ_PATCHLEVEL(ver));
return -EPERM;
}
if (copy_to_user(optval, &so->id, sizeof(so->id)))
return -EFAULT;
} break;
case Q_SO_GET_STATUS:
{
int enabled;
if (len != sizeof(int))
return -EINVAL;
enabled = so->shmem.addr == NULL ? 0 : 1;
if (copy_to_user(optval, &enabled, sizeof(enabled)))
return -EFAULT;
} break;
case Q_SO_GET_STATS:
{
struct pfq_stats stat;
if (len != sizeof(struct pfq_stats))
return -EINVAL;
stat.recv = sparse_read(so->stats, recv);
stat.lost = sparse_read(so->stats, lost);
stat.drop = sparse_read(so->stats, drop);
stat.frwd = 0;
stat.kern = 0;
stat.sent = sparse_read(so->stats, sent);
stat.disc = sparse_read(so->stats, disc);
if (copy_to_user(optval, &stat, sizeof(stat)))
return -EFAULT;
} break;
case Q_SO_GET_RX_TSTAMP:
{
if (len != sizeof(so->opt.tstamp))
return -EINVAL;
if (copy_to_user(optval, &so->opt.tstamp, sizeof(so->opt.tstamp)))
return -EFAULT;
} break;
case Q_SO_GET_SHMEM_SIZE:
{
size_t size = pfq_shared_memory_size(so);
if (len != sizeof(size))
return -EINVAL;
if (copy_to_user(optval, &size, sizeof(size)))
return -EFAULT;
} break;
case Q_SO_GET_RX_CAPLEN:
{
if (len != sizeof(so->opt.caplen))
return -EINVAL;
if (copy_to_user(optval, &so->opt.caplen, sizeof(so->opt.caplen)))
return -EFAULT;
} break;
case Q_SO_GET_TX_MAXLEN:
{
if (len != sizeof(xmit_slot_size))
return -EINVAL;
if (copy_to_user(optval, &xmit_slot_size, sizeof(xmit_slot_size)))
return -EFAULT;
} break;
case Q_SO_GET_RX_SLOTS:
{
if (len != sizeof(so->opt.rx_queue_len))
return -EINVAL;
if (copy_to_user(optval, &so->opt.rx_queue_len, sizeof(so->opt.rx_queue_len)))
return -EFAULT;
} break;
case Q_SO_GET_TX_SLOTS:
{
if (len != sizeof(so->opt.tx_queue_len))
return -EINVAL;
if (copy_to_user(optval, &so->opt.tx_queue_len, sizeof(so->opt.tx_queue_len)))
return -EFAULT;
} break;
case Q_SO_GET_GROUPS:
{
unsigned long grps;
if(len != sizeof(unsigned long))
return -EINVAL;
grps = pfq_get_groups(so->id);
if (copy_to_user(optval, &grps, sizeof(grps)))
return -EFAULT;
} break;
case Q_SO_GET_GROUP_STATS:
{
struct pfq_group *group;
struct pfq_stats stat;
pfq_gid_t gid;
if (len != sizeof(stat))
return -EINVAL;
if (copy_from_user(&stat, optval, sizeof(stat)))
return -EFAULT;
gid = (__force pfq_gid_t)stat.recv;
group = pfq_get_group(gid);
if (group == NULL) {
printk(KERN_INFO "[PFQ|%d] group error: invalid group id %d!\n", so->id, gid);
return -EFAULT;
}
if (pfq_group_is_free(gid)) {
printk(KERN_INFO "[PFQ|%d] group stats error: gid=%d is a free group!\n",
so->id, gid);
return -EACCES;
}
if (!pfq_group_access(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] group stats error: gid=%d permission denied!\n",
so->id, gid);
return -EACCES;
}
stat.recv = sparse_read(group->stats, recv);
stat.drop = sparse_read(group->stats, drop);
stat.frwd = sparse_read(group->stats, frwd);
stat.kern = sparse_read(group->stats, kern);
stat.lost = 0;
stat.sent = 0;
stat.disc = 0;
if (copy_to_user(optval, &stat, sizeof(stat)))
return -EFAULT;
} break;
case Q_SO_GET_GROUP_COUNTERS:
{
struct pfq_group *group;
struct pfq_counters cs;
pfq_gid_t gid;
int i;
if (len != sizeof(cs))
return -EINVAL;
if (copy_from_user(&cs, optval, sizeof(cs)))
return -EFAULT;
gid = (__force pfq_gid_t)cs.counter[0];
group = pfq_get_group(gid);
if (group == NULL) {
printk(KERN_INFO "[PFQ|%d] group error: invalid group id %d!\n", so->id, gid);
return -EFAULT;
}
/* check whether the group is joinable.. */
if (!pfq_group_policy_access(gid, so->id, Q_POLICY_GROUP_UNDEFINED)) {
printk(KERN_INFO "[PFQ|%d] group error: permission denied (gid=%d)!\n",
so->id, gid);
return -EACCES;
}
for(i = 0; i < Q_MAX_COUNTERS; i++)
{
cs.counter[i] = sparse_read(group->counters, value[i]);
}
if (copy_to_user(optval, &cs, sizeof(cs)))
return -EFAULT;
} break;
case Q_SO_GET_WEIGHT:
{
if (len != sizeof(so->weight))
return -EINVAL;
if (copy_to_user(optval, &so->weight, sizeof(so->weight)))
return -EFAULT;
} break;
default:
return -EFAULT;
}
return 0;
}