struct pfq_recycle_stat
pfq_get_recycle_stats(void)
{
struct pfq_recycle_stat ret = { sparse_read(&os_alloc),
sparse_read(&os_free),
sparse_read(&rc_alloc),
sparse_read(&rc_free),
sparse_read(&rc_error)};
return ret;
}
//ret copied length if successful, -1 if failed
static int r_buf_cpy(RBuffer *b, ut64 addr, ut8 *dst, const ut8 *src, int len, int write) {
int end;
if (!b || b->empty)
return 0;
if (b->sparse) {
if (write) {
// create new with src + len
if (sparse_write (b->sparse, addr, src, len) <0) return -1;
} else {
// read from sparse and write into dst
memset (dst, 0xff, len);
if (sparse_read (b->sparse, addr, dst, len) <0) return -1;
}
return len;
}
addr = (addr==R_BUF_CUR)? b->cur: addr-b->base;
if (len<1 || dst == NULL || addr > b->length)
return -1;
end = (int)(addr+len);
if (end > b->length)
len -= end-b->length;
if (write)
dst += addr;
else src += addr;
memmove (dst, src, len);
b->cur = addr + len;
return len;
}
static int pfq_proc_stats(struct seq_file *m, void *v)
{
seq_printf(m, "INPUT:\n");
seq_printf(m, " received : %ld\n", sparse_read(&global_stats, recv));
seq_printf(m, " lost : %ld\n", sparse_read(&global_stats, lost));
seq_printf(m, "OUTPUT:\n");
seq_printf(m, " sent : %ld\n", sparse_read(&global_stats, sent));
seq_printf(m, " kernel : %ld\n", sparse_read(&global_stats, kern));
seq_printf(m, " forwarded : %ld\n", sparse_read(&global_stats, frwd));
seq_printf(m, " discarded : %ld\n", sparse_read(&global_stats, disc));
seq_printf(m, " aborted : %ld\n", sparse_read(&global_stats, abrt));
seq_printf(m, "SCHEDULE:\n");
seq_printf(m, " poll : %ld\n", sparse_read(&global_stats, poll));
seq_printf(m, " wakeup : %ld\n", sparse_read(&global_stats, wake));
return 0;
}
// ret copied length if successful, -1 if failed
static int r_buf_cpy(RBuffer *b, ut64 addr, ut8 *dst, const ut8 *src, int len, int write) {
int end;
if (!b || b->empty) {
return 0;
}
if (b->fd != -1) {
if (r_sandbox_lseek (b->fd, addr, SEEK_SET) == -1) {
// seek failed - print error here?
// return 0;
}
if (write) {
return r_sandbox_write (b->fd, src, len);
}
memset (dst, 0, len);
return r_sandbox_read (b->fd, dst, len);
}
if (b->sparse) {
if (write) {
// create new with src + len
if (sparse_write (b->sparse, addr, src, len) < 0) {
return -1;
}
} else {
// read from sparse and write into dst
memset (dst, 0xff, len);
if (sparse_read (b->sparse, addr, dst, len) < 0) {
return -1;
}
}
return len;
}
addr = (addr == R_BUF_CUR) ? b->cur : addr - b->base;
if (len < 1 || !dst || addr > b->length) {
return -1;
}
end = (int)(addr + len);
if (end > b->length) {
len -= end-b->length;
}
if (write) {
dst += addr;
} else {
src += addr;
}
memmove (dst, src, len);
b->cur = addr + len;
return len;
}
static int pfq_proc_groups(struct seq_file *m, void *v)
{
size_t n;
seq_printf(m, "group: recv drop forward kernel disc aborted pol pid def. uplane cplane ctrl\n");
down(&group_sem);
for(n = 0; n < Q_MAX_GID; n++)
{
pfq_gid_t gid = (__force pfq_gid_t)n;
struct pfq_group *this_group = pfq_get_group(gid);
if (!this_group->policy)
continue;
seq_printf(m, "%5zu: %-9lu %-9lu %-9lu %-9lu %-9lu %-9lu", n,
sparse_read(this_group->stats, recv),
sparse_read(this_group->stats, drop),
sparse_read(this_group->stats, frwd),
sparse_read(this_group->stats, kern),
sparse_read(this_group->stats, disc),
sparse_read(this_group->stats, abrt));
seq_printf(m, "%3d %3d ", this_group->policy, this_group->pid);
seq_printf(m, "%08lx %08lx %08lx %08lx \n",
atomic_long_read(&this_group->sock_mask[pfq_ctz(Q_CLASS_DEFAULT)]),
atomic_long_read(&this_group->sock_mask[pfq_ctz(Q_CLASS_USER_PLANE)]),
atomic_long_read(&this_group->sock_mask[pfq_ctz(Q_CLASS_CONTROL_PLANE)]),
atomic_long_read(&this_group->sock_mask[63]));
}
up(&group_sem);
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);
struct pfq_rx_opt * ro;
struct pfq_tx_opt * to;
int len;
if (so == NULL)
return -EFAULT;
ro = &so->rx_opt;
to = &so->tx_opt;
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) {
pr_devel("[PFQ|%d] join 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 {
CHECK_GROUP(so->id, group.gid, "group join");
if (pfq_join_group(group.gid, so->id, group.class_mask, group.policy) < 0) {
pr_devel("[PFQ|%d] join error: permission denied (gid:%d)!\n", so->id, group.gid);
return -EACCES;
}
}
pr_devel("[PFQ|%d] join -> gid:%d class_mask:%lx\n", so->id, group.gid, group.class_mask);
} break;
case Q_SO_GET_ID:
{
if (len != sizeof(so->id))
return -EINVAL;
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->mem_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(&ro->stat.recv);
stat.lost = sparse_read(&ro->stat.lost);
stat.drop = sparse_read(&ro->stat.drop);
stat.sent = sparse_read(&to->stat.sent);
stat.disc = sparse_read(&to->stat.disc);
if (copy_to_user(optval, &stat, sizeof(stat)))
return -EFAULT;
} break;
case Q_SO_GET_RX_TSTAMP:
{
if (len != sizeof(ro->tstamp))
return -EINVAL;
if (copy_to_user(optval, &ro->tstamp, sizeof(ro->tstamp)))
return -EFAULT;
} break;
case Q_SO_GET_QUEUE_MEM:
{
if (len != sizeof(so->mem_size))
return -EINVAL;
if (copy_to_user(optval, &so->mem_size, sizeof(so->mem_size)))
return -EFAULT;
} break;
case Q_SO_GET_RX_CAPLEN:
{
if (len != sizeof(ro->caplen))
return -EINVAL;
if (copy_to_user(optval, &ro->caplen, sizeof(ro->caplen)))
return -EFAULT;
} break;
case Q_SO_GET_TX_MAXLEN:
{
if (len != sizeof(to->maxlen))
return -EINVAL;
if (copy_to_user(optval, &to->maxlen, sizeof(to->maxlen)))
return -EFAULT;
} break;
case Q_SO_GET_RX_SLOTS:
{
if (len != sizeof(ro->size))
return -EINVAL;
if (copy_to_user(optval, &ro->size, sizeof(ro->size)))
return -EFAULT;
} break;
case Q_SO_GET_TX_SLOTS:
{
if (len != sizeof(to->size))
return -EINVAL;
if (copy_to_user(optval, &to->size, sizeof(to->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;
int gid;
if (len != sizeof(stat))
return -EINVAL;
if (copy_from_user(&stat, optval, sizeof(stat)))
return -EFAULT;
gid = (int)stat.recv;
CHECK_GROUP(so->id, gid, "group stat");
g = pfq_get_group(gid);
if (!g) {
pr_devel("[PFQ|%d] group error: invalid group id %d!\n", so->id, gid);
return -EFAULT;
}
/* check whether the group is joinable.. */
if (!__pfq_group_access(gid, so->id, Q_POLICY_GROUP_UNDEFINED, false)) {
pr_devel("[PFQ|%d] group stats error: permission denied (gid:%d)!\n", so->id, gid);
return -EACCES;
}
stat.recv = sparse_read(&g->recv);
stat.lost = sparse_read(&g->lost);
stat.drop = sparse_read(&g->drop);
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;
int i, gid;
if (len != sizeof(cs))
return -EINVAL;
if (copy_from_user(&cs, optval, sizeof(cs)))
return -EFAULT;
gid = (int)cs.counter[0];
CHECK_GROUP(so->id, gid, "group stat");
g = pfq_get_group(gid);
if (!g) {
pr_devel("[PFQ|%d] group error: invalid group id %d!\n", so->id, gid);
return -EFAULT;
}
/* check whether the group is joinable.. */
if (!__pfq_group_access(gid, so->id, Q_POLICY_GROUP_UNDEFINED, false)) {
pr_devel("[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(&g->ctx.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 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;
}
static int pfq_proc_memory(struct seq_file *m, void *v)
{
long int push = sparse_read(&memory_stats, pool_push);
long int pop = sparse_read(&memory_stats, pool_pop);
seq_printf(m, "OS:\n");
seq_printf(m, " alloc : %ld\n", sparse_read(&memory_stats, os_alloc));
seq_printf(m, " free : %ld\n", sparse_read(&memory_stats, os_free));
seq_printf(m, "POOL:\n");
seq_printf(m, " alloc : %ld\n", sparse_read(&memory_stats, pool_alloc));
seq_printf(m, " free : %ld\n", sparse_read(&memory_stats, pool_free));
seq_printf(m, " push : %ld\n", push);
seq_printf(m, " pop : %ld\n", pop);
seq_printf(m, " size : %ld\n", push - pop);
seq_printf(m, "ERROR:\n");
seq_printf(m, " error norecyl : %ld\n", sparse_read(&memory_stats, err_norecyl));
seq_printf(m, " error pop : %ld\n", sparse_read(&memory_stats, err_pop));
seq_printf(m, " error push : %ld\n", sparse_read(&memory_stats, err_push));
seq_printf(m, " error intdisab : %ld\n", sparse_read(&memory_stats, err_intdis));
seq_printf(m, " error shared : %ld\n", sparse_read(&memory_stats, err_shared));
seq_printf(m, " error cloned : %ld\n", sparse_read(&memory_stats, err_cloned));
seq_printf(m, " error memory : %ld\n", sparse_read(&memory_stats, err_memory));
return 0;
}
struct pfq_pool_stat
pfq_get_skb_pool_stats(void)
{
struct pfq_pool_stat ret =
{
sparse_read(&memory_stats.os_alloc),
sparse_read(&memory_stats.os_free),
sparse_read(&memory_stats.pool_alloc),
sparse_read(&memory_stats.pool_free),
sparse_read(&memory_stats.pool_push),
sparse_read(&memory_stats.pool_pop),
sparse_read(&memory_stats.err_norecyl),
sparse_read(&memory_stats.err_pop),
sparse_read(&memory_stats.err_push),
sparse_read(&memory_stats.err_intdis),
sparse_read(&memory_stats.err_shared),
sparse_read(&memory_stats.err_cloned),
sparse_read(&memory_stats.err_memory),
};
return ret;
}
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;
}