int pfq_setsockopt(struct socket *sock,
int level, int optname,
char __user * optval,
#if(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31))
unsigned
#endif
int optlen)
{
struct pfq_sock *so = pfq_sk(sock->sk);
bool found = true;
if (so == NULL)
return -EINVAL;
switch(optname)
{
case Q_SO_ENABLE:
{
unsigned long addr;
int err = 0;
if (optlen != sizeof(addr))
return -EINVAL;
if (copy_from_user(&addr, optval, optlen))
return -EFAULT;
err = pfq_shared_queue_enable(so, addr);
if (err < 0) {
printk(KERN_INFO "[PFQ|%d] enable error!\n", so->id.value);
return err;
}
return 0;
} break;
case Q_SO_DISABLE:
{
int err = 0;
size_t n;
for(n = 0; n < so->tx_opt.num_queues; n++)
{
if (so->tx_opt.queue[n].task) {
pr_devel("[PFQ|%d] stopping Tx[%zu] thread@%p\n", so->id.value, n, so->tx_opt.queue[n].task);
kthread_stop(so->tx_opt.queue[n].task);
so->tx_opt.queue[n].task = NULL;
}
}
err = pfq_shared_queue_disable(so);
if (err < 0) {
printk(KERN_INFO "[PFQ|%d] disable error!\n", so->id.value);
return err;
}
} break;
case Q_SO_GROUP_BIND:
{
struct pfq_binding bind;
pfq_gid_t gid;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
gid.value = bind.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] add bind: gid=%d not joined!\n", so->id.value, bind.gid);
return -EACCES;
}
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), bind.if_index)) {
rcu_read_unlock();
printk(KERN_INFO "[PFQ|%d] bind: invalid if_index=%d!\n", so->id.value, bind.if_index);
return -EACCES;
}
rcu_read_unlock();
pfq_devmap_update(map_set, bind.if_index, bind.hw_queue, gid);
} break;
case Q_SO_GROUP_UNBIND:
{
struct pfq_binding bind;
pfq_gid_t gid;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
gid.value = bind.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] remove bind: gid=%d not joined!\n", so->id.value, bind.gid);
return -EACCES;
}
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), bind.if_index)) {
rcu_read_unlock();
printk(KERN_INFO "[PFQ|%d] unbind: invalid if_index=%d\n", so->id.value, bind.if_index);
return -EPERM;
}
rcu_read_unlock();
pfq_devmap_update(map_reset, bind.if_index, bind.hw_queue, gid);
} break;
case Q_SO_EGRESS_BIND:
{
struct pfq_binding info;
if (optlen != sizeof(info))
return -EINVAL;
if (copy_from_user(&info, optval, optlen))
return -EFAULT;
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), info.if_index)) {
rcu_read_unlock();
printk(KERN_INFO "[PFQ|%d] egress bind: invalid if_index=%d\n", so->id.value, info.if_index);
return -EPERM;
}
rcu_read_unlock();
if (info.hw_queue < -1) {
printk(KERN_INFO "[PFQ|%d] egress bind: invalid queue=%d\n", so->id.value, info.hw_queue);
return -EPERM;
}
so->egress_type = pfq_endpoint_device;
so->egress_index = info.if_index;
so->egress_queue = info.hw_queue;
pr_devel("[PFQ|%d] egress bind: device if_index=%d hw_queue=%d\n", so->id.value, so->egress_index, so->egress_queue);
} break;
case Q_SO_EGRESS_UNBIND:
{
so->egress_type = pfq_endpoint_socket;
so->egress_index = 0;
so->egress_queue = 0;
pr_devel("[PFQ|%d] egress unbind.\n", so->id.value);
} break;
case Q_SO_SET_RX_TSTAMP:
{
int tstamp;
if (optlen != sizeof(so->rx_opt.tstamp))
return -EINVAL;
if (copy_from_user(&tstamp, optval, optlen))
return -EFAULT;
tstamp = tstamp ? 1 : 0;
so->rx_opt.tstamp = tstamp;
pr_devel("[PFQ|%d] timestamp enabled.\n", so->id.value);
} break;
case Q_SO_SET_RX_CAPLEN:
{
typeof(so->rx_opt.caplen) caplen;
if (optlen != sizeof(caplen))
return -EINVAL;
if (copy_from_user(&caplen, optval, optlen))
return -EFAULT;
if (caplen > (size_t)cap_len) {
printk(KERN_INFO "[PFQ|%d] invalid caplen=%zu (max %d)\n", so->id.value, caplen, cap_len);
return -EPERM;
}
so->rx_opt.caplen = caplen;
so->rx_opt.slot_size = Q_MPDB_QUEUE_SLOT_SIZE(so->rx_opt.caplen);
pr_devel("[PFQ|%d] caplen=%zu, slot_size=%zu\n",
so->id.value, so->rx_opt.caplen, so->rx_opt.slot_size);
} break;
case Q_SO_SET_RX_SLOTS:
{
typeof(so->rx_opt.queue_size) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots > (size_t)max_queue_slots) {
printk(KERN_INFO "[PFQ|%d] invalid Rx slots=%zu (max %d)\n", so->id.value, slots, max_queue_slots);
return -EPERM;
}
so->rx_opt.queue_size = slots;
pr_devel("[PFQ|%d] rx_queue slots=%zu\n", so->id.value, so->rx_opt.queue_size);
} break;
case Q_SO_SET_TX_SLOTS:
{
typeof (so->tx_opt.queue_size) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots > (size_t)max_queue_slots) {
printk(KERN_INFO "[PFQ|%d] invalid Tx slots=%zu (max %d)\n", so->id.value, slots, max_queue_slots);
return -EPERM;
}
so->tx_opt.queue_size = slots;
pr_devel("[PFQ|%d] tx_queue slots=%zu\n", so->id.value, so->tx_opt.queue_size);
} break;
case Q_SO_GROUP_LEAVE:
{
pfq_gid_t gid;
if (optlen != sizeof(gid.value))
return -EINVAL;
if (copy_from_user(&gid.value, optval, optlen))
return -EFAULT;
if (pfq_leave_group(gid, so->id) < 0)
return -EFAULT;
pr_devel("[PFQ|%d] leave: gid=%d\n", so->id.value, gid.value);
} break;
case Q_SO_GROUP_FPROG:
{
struct pfq_fprog fprog;
pfq_gid_t gid;
if (optlen != sizeof(fprog))
return -EINVAL;
if (copy_from_user(&fprog, optval, optlen))
return -EFAULT;
gid.value = fprog.gid;
if (!pfq_has_joined_group(gid, so->id)) {
/* don't set the first and return */
return 0;
}
if (fprog.fcode.len > 0) { /* set the filter */
struct sk_filter *filter;
if (fprog.fcode.len == 1) { /* check for dummey BPF_CLASS == BPF_RET */
if (BPF_CLASS(fprog.fcode.filter[0].code) == BPF_RET) {
pr_devel("[PFQ|%d] fprog: BPF_RET optimized out!\n", so->id.value);
return 0;
}
}
filter = pfq_alloc_sk_filter(&fprog.fcode);
if (filter == NULL) {
printk(KERN_INFO "[PFQ|%d] fprog error: alloc_sk_filter for gid=%d\n", so->id.value, fprog.gid);
return -EINVAL;
}
pfq_set_group_filter(gid, filter);
pr_devel("[PFQ|%d] fprog: gid=%d (fprog len %d bytes)\n", so->id.value, fprog.gid, fprog.fcode.len);
}
else { /* reset the filter */
pfq_set_group_filter(gid, NULL);
pr_devel("[PFQ|%d] fprog: gid=%d (resetting filter)\n", so->id.value, fprog.gid);
}
} break;
case Q_SO_GROUP_VLAN_FILT_TOGGLE:
{
struct pfq_vlan_toggle vlan;
pfq_gid_t gid;
if (optlen != sizeof(vlan))
return -EINVAL;
if (copy_from_user(&vlan, optval, optlen))
return -EFAULT;
gid.value = vlan.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] vlan filter toggle: gid=%d not joined!\n", so->id.value, vlan.gid);
return -EACCES;
}
pfq_toggle_group_vlan_filters(gid, vlan.toggle);
pr_devel("[PFQ|%d] vlan filters %s for gid=%d\n", so->id.value, (vlan.toggle ? "enabled" : "disabled"), vlan.gid);
} break;
case Q_SO_GROUP_VLAN_FILT:
{
struct pfq_vlan_toggle filt;
pfq_gid_t gid;
if (optlen != sizeof(filt))
return -EINVAL;
if (copy_from_user(&filt, optval, optlen))
return -EFAULT;
gid.value = filt.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] vlan filter: gid=%d not joined!\n", so->id.value, filt.gid);
return -EACCES;
}
if (filt.vid < -1 || filt.vid > 4094) {
printk(KERN_INFO "[PFQ|%d] vlan error: invalid vid=%d for gid=%d!\n", so->id.value, filt.vid, filt.gid);
return -EINVAL;
}
if (!pfq_vlan_filters_enabled(gid)) {
printk(KERN_INFO "[PFQ|%d] vlan error: vlan filters disabled for gid=%d!\n", so->id.value, filt.gid);
return -EPERM;
}
if (filt.vid == -1) { /* any */
int i;
for(i = 1; i < 4095; i++)
{
pfq_set_group_vlan_filter(gid, filt.toggle, i);
}
}
else {
pfq_set_group_vlan_filter(gid, filt.toggle, filt.vid);
}
pr_devel("[PFQ|%d] vlan filter vid %d set for gid=%d\n", so->id.value, filt.vid, filt.gid);
} break;
case Q_SO_TX_BIND:
{
struct pfq_binding info;
size_t i;
if (optlen != sizeof(info))
return -EINVAL;
if (copy_from_user(&info, optval, optlen))
return -EFAULT;
if (so->tx_opt.num_queues >= Q_MAX_TX_QUEUES) {
printk(KERN_INFO "[PFQ|%d] Tx bind: max number of queues exceeded!\n", so->id.value);
return -EPERM;
}
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), info.if_index)) {
rcu_read_unlock();
printk(KERN_INFO "[PFQ|%d] Tx bind: invalid if_index=%d\n", so->id.value, info.if_index);
return -EPERM;
}
rcu_read_unlock();
if (info.hw_queue < -1) {
printk(KERN_INFO "[PFQ|%d] Tx bind: invalid queue=%d\n", so->id.value, info.hw_queue);
return -EPERM;
}
i = so->tx_opt.num_queues;
if (info.cpu < -1) {
printk(KERN_INFO "[PFQ|%d] Tx[%zu] thread: invalid cpu (%d)!\n", so->id.value, i, info.cpu);
return -EPERM;
}
so->tx_opt.queue[i].if_index = info.if_index;
so->tx_opt.queue[i].hw_queue = info.hw_queue;
so->tx_opt.queue[i].cpu = info.cpu;
so->tx_opt.num_queues++;
pr_devel("[PFQ|%d] Tx[%zu] bind: if_index=%d hw_queue=%d cpu=%d\n", so->id.value, i,
so->tx_opt.queue[i].if_index, so->tx_opt.queue[i].hw_queue, info.cpu);
} break;
case Q_SO_TX_UNBIND:
{
size_t n;
for(n = 0; n < Q_MAX_TX_QUEUES; ++n)
{
so->tx_opt.queue[n].if_index = -1;
so->tx_opt.queue[n].hw_queue = -1;
so->tx_opt.queue[n].cpu = -1;
}
} break;
case Q_SO_TX_FLUSH:
{
int queue, err = 0;
size_t n;
if (optlen != sizeof(queue))
return -EINVAL;
if (copy_from_user(&queue, optval, optlen))
return -EFAULT;
if (pfq_get_tx_queue(&so->tx_opt, 0) == NULL) {
printk(KERN_INFO "[PFQ|%d] Tx queue flush: socket not enabled!\n", so->id.value);
return -EPERM;
}
if (queue < -1 || (queue > 0 && queue >= so->tx_opt.num_queues)) {
printk(KERN_INFO "[PFQ|%d] Tx queue flush: bad queue %d (num_queue=%zu)!\n", so->id.value, queue, so->tx_opt.num_queues);
return -EPERM;
}
if (queue != -1) {
pr_devel("[PFQ|%d] flushing Tx queue %d...\n", so->id.value, queue);
return pfq_queue_flush(so, queue);
}
for(n = 0; n < so->tx_opt.num_queues; n++)
{
if (pfq_queue_flush(so, n) != 0) {
printk(KERN_INFO "[PFQ|%d] Tx[%zu] queue flush: flush error (if_index=%d)!\n", so->id.value, n, so->tx_opt.queue[n].if_index);
err = -EPERM;
}
}
if (err)
return err;
} break;
case Q_SO_TX_ASYNC:
{
int toggle, err = 0;
size_t n;
if (optlen != sizeof(toggle))
return -EINVAL;
if (copy_from_user(&toggle, optval, optlen))
return -EFAULT;
if (toggle) {
size_t started = 0;
if (pfq_get_tx_queue(&so->tx_opt, 0) == NULL) {
printk(KERN_INFO "[PFQ|%d] Tx queue flush: socket not enabled!\n", so->id.value);
return -EPERM;
}
/* start Tx kernel threads */
for(n = 0; n < Q_MAX_TX_QUEUES; n++)
{
struct pfq_thread_data *data;
int node;
if (so->tx_opt.queue[n].if_index == -1)
break;
if (so->tx_opt.queue[n].cpu == Q_NO_KTHREAD)
continue;
if (so->tx_opt.queue[n].task) {
printk(KERN_INFO "[PFQ|%d] kernel_thread: Tx[%zu] thread already running!\n", so->id.value, n);
continue;
}
data = kmalloc(sizeof(struct pfq_thread_data), GFP_KERNEL);
if (!data) {
printk(KERN_INFO "[PFQ|%d] kernel_thread: could not allocate thread_data! Failed starting thread on cpu %d!\n",
so->id.value, so->tx_opt.queue[n].cpu);
err = -EPERM;
continue;
}
data->so = so;
data->id = n;
node = cpu_online(so->tx_opt.queue[n].cpu) ? cpu_to_node(so->tx_opt.queue[n].cpu) : NUMA_NO_NODE;
pr_devel("[PFQ|%d] creating Tx[%zu] thread on cpu %d: if_index=%d hw_queue=%d\n",
so->id.value, n, so->tx_opt.queue[n].cpu, so->tx_opt.queue[n].if_index, so->tx_opt.queue[n].hw_queue);
so->tx_opt.queue[n].task = kthread_create_on_node(pfq_tx_thread, data, node, "pfq_tx_%d#%zu", so->id.value, n);
if (IS_ERR(so->tx_opt.queue[n].task)) {
printk(KERN_INFO "[PFQ|%d] kernel_thread: create failed on cpu %d!\n", so->id.value, so->tx_opt.queue[n].cpu);
err = PTR_ERR(so->tx_opt.queue[n].task);
so->tx_opt.queue[n].task = NULL;
kfree (data);
continue;
}
/* bind the thread */
kthread_bind(so->tx_opt.queue[n].task, so->tx_opt.queue[n].cpu);
/* start it */
wake_up_process(so->tx_opt.queue[n].task);
started++;
}
if (started == 0) {
printk(KERN_INFO "[PFQ|%d] no kernel thread started!\n", so->id.value);
err = -EPERM;
}
}
else {
/* stop running threads */
for(n = 0; n < so->tx_opt.num_queues; n++)
{
if (so->tx_opt.queue[n].task) {
pr_devel("[PFQ|%d] stopping Tx[%zu] kernel thread@%p\n", so->id.value, n, so->tx_opt.queue[n].task);
kthread_stop(so->tx_opt.queue[n].task);
so->tx_opt.queue[n].task = NULL;
}
}
}
return err;
} break;
case Q_SO_GROUP_FUNCTION:
{
struct pfq_computation_descr *descr = NULL;
struct pfq_computation_tree *comp = NULL;
struct pfq_group_computation tmp;
size_t psize, ucsize;
void *context = NULL;
pfq_gid_t gid;
int err = 0;
if (optlen != sizeof(tmp))
return -EINVAL;
if (copy_from_user(&tmp, optval, optlen))
return -EFAULT;
gid.value = tmp.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] group computation: gid=%d not joined!\n", so->id.value, tmp.gid);
return -EACCES;
}
if (copy_from_user(&psize, tmp.prog, sizeof(size_t)))
return -EFAULT;
pr_devel("[PFQ|%d] computation size: %zu\n", so->id.value, psize);
ucsize = sizeof(size_t) * 2 + psize * sizeof(struct pfq_functional_descr);
descr = kmalloc(ucsize, GFP_KERNEL);
if (descr == NULL) {
printk(KERN_INFO "[PFQ|%d] computation: out of memory!\n", so->id.value);
return -ENOMEM;
}
if (copy_from_user(descr, tmp.prog, ucsize)) {
printk(KERN_INFO "[PFQ|%d] computation: copy_from_user error!\n", so->id.value);
err = -EFAULT;
goto error;
}
/* print user computation */
pr_devel_computation_descr(descr);
/* check the correctness of computation */
if (pfq_check_computation_descr(descr) < 0) {
printk(KERN_INFO "[PFQ|%d] invalid expression!\n", so->id.value);
err = -EFAULT;
goto error;
}
/* allocate context */
context = pfq_context_alloc(descr);
if (context == NULL) {
printk(KERN_INFO "[PFQ|%d] context: alloc error!\n", so->id.value);
err = -EFAULT;
goto error;
}
/* allocate a pfq_computation_tree */
comp = pfq_computation_alloc(descr);
if (comp == NULL) {
printk(KERN_INFO "[PFQ|%d] computation: alloc error!\n", so->id.value);
err = -EFAULT;
goto error;
}
/* link functions of computation */
if (pfq_computation_rtlink(descr, comp, context) < 0) {
printk(KERN_INFO "[PFQ|%d] computation aborted!", so->id.value);
err = -EPERM;
goto error;
}
/* print executable tree data structure */
pr_devel_computation_tree(comp);
/* run init functions */
if (pfq_computation_init(comp) < 0) {
printk(KERN_INFO "[PFQ|%d] initialization of computation aborted!", so->id.value);
pfq_computation_fini(comp);
err = -EPERM;
goto error;
}
/* enable functional program */
if (pfq_set_group_prog(gid, comp, context) < 0) {
printk(KERN_INFO "[PFQ|%d] set group program error!\n", so->id.value);
err = -EPERM;
goto error;
}
kfree(descr);
return 0;
error: kfree(comp);
kfree(context);
kfree(descr);
return err;
} break;
default:
{
found = false;
} break;
}
return found ? 0 : sock_setsockopt(sock, level, optname, optval, optlen);
}
int pfq_setsockopt(struct socket *sock,
int level, int optname,
char __user * optval,
#if(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31))
unsigned
#endif
int optlen)
{
struct pfq_sock *so = pfq_sk(sock->sk);
struct pfq_rx_opt * ro;
struct pfq_tx_opt * to;
bool found = true;
if (so == NULL)
return -EINVAL;
ro = &so->rx_opt;
to = &so->tx_opt;
switch(optname)
{
case Q_SO_TOGGLE_QUEUE:
{
int active;
if (optlen != sizeof(active))
return -EINVAL;
if (copy_from_user(&active, optval, optlen))
return -EFAULT;
if (active)
{
if (!so->mem_addr)
{
struct pfq_queue_hdr * queue;
/* alloc queue memory */
if (pfq_shared_queue_alloc(so, pfq_queue_total_mem(so)) < 0)
{
return -ENOMEM;
}
/* so->mem_addr and so->mem_size are correctly configured */
/* initialize queues headers */
queue = (struct pfq_queue_hdr *)so->mem_addr;
/* initialize rx queue header */
queue->rx.data = (1L << 24);
queue->rx.poll_wait = 0;
queue->rx.size = so->rx_opt.size;
queue->rx.slot_size = so->rx_opt.slot_size;
queue->tx.producer.index = 0;
queue->tx.producer.cache = 0;
queue->tx.consumer.index = 0;
queue->tx.consumer.cache = 0;
queue->tx.size_mask = so->tx_opt.size - 1;
queue->tx.max_len = so->tx_opt.maxlen;
queue->tx.size = so->tx_opt.size;
queue->tx.slot_size = so->tx_opt.slot_size;
/* update the queues base_addr */
so->rx_opt.base_addr = so->mem_addr + sizeof(struct pfq_queue_hdr);
so->tx_opt.base_addr = so->mem_addr + sizeof(struct pfq_queue_hdr) + pfq_queue_mpdb_mem(so);
/* commit both the queues */
smp_wmb();
so->rx_opt.queue_ptr = &queue->rx;
so->tx_opt.queue_ptr = &queue->tx;
pr_devel("[PFQ|%d] queue: rx_size:%d rx_slot_size:%d tx_size:%d tx_slot_size:%d\n", so->id, queue->rx.size,
queue->rx.slot_size,
queue->tx.size,
queue->tx.slot_size);
}
}
else
{
if (so->tx_opt.thread)
{
pr_devel("[PFQ|%d] stopping TX thread...\n", so->id);
kthread_stop(so->tx_opt.thread);
so->tx_opt.thread = NULL;
}
msleep(Q_GRACE_PERIOD);
pfq_shared_queue_free(so);
}
} break;
case Q_SO_GROUP_BIND:
{
struct pfq_binding bind;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, bind.gid, "add binding");
pfq_devmap_update(map_set, bind.if_index, bind.hw_queue, bind.gid);
} break;
case Q_SO_GROUP_UNBIND:
{
struct pfq_binding bind;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, bind.gid, "remove binding");
pfq_devmap_update(map_reset, bind.if_index, bind.hw_queue, bind.gid);
} break;
case Q_SO_EGRESS_BIND:
{
struct pfq_binding info;
if (optlen != sizeof(info))
return -EINVAL;
if (copy_from_user(&info, optval, optlen))
return -EFAULT;
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), info.if_index))
{
rcu_read_unlock();
pr_devel("[PFQ|%d] TX bind: invalid if_index:%d\n", so->id, info.if_index);
return -EPERM;
}
rcu_read_unlock();
if (info.hw_queue < -1)
{
pr_devel("[PFQ|%d] TX bind: invalid queue:%d\n", so->id, info.hw_queue);
return -EPERM;
}
so->egress_index = info.if_index;
so->egress_queue = info.hw_queue;
pr_devel("[PFQ|%d] egress bind: if_index:%d hw_queue:%d\n", so->id, so->egress_index, so->egress_queue);
} break;
case Q_SO_EGRESS_UNBIND:
{
so->egress_index = 0;
so->egress_queue = 0;
pr_devel("[PFQ|%d] egress unbind.\n", so->id);
} break;
case Q_SO_SET_RX_TSTAMP:
{
int tstamp;
if (optlen != sizeof(so->rx_opt.tstamp))
return -EINVAL;
if (copy_from_user(&tstamp, optval, optlen))
return -EFAULT;
tstamp = tstamp ? 1 : 0;
/* update the timestamp_enabled counter */
atomic_add(tstamp - so->rx_opt.tstamp, ×tamp_enabled);
so->rx_opt.tstamp = tstamp;
pr_devel("[PFQ|%d] timestamp_enabled counter: %d\n", so->id, atomic_read(×tamp_enabled));
} break;
case Q_SO_SET_RX_CAPLEN:
{
typeof(so->rx_opt.caplen) caplen;
if (optlen != sizeof(caplen))
return -EINVAL;
if (copy_from_user(&caplen, optval, optlen))
return -EFAULT;
if (caplen > (size_t)cap_len) {
pr_devel("[PFQ|%d] invalid caplen:%zu (max: %d)\n", so->id, caplen, cap_len);
return -EPERM;
}
so->rx_opt.caplen = caplen;
so->rx_opt.slot_size = MPDB_QUEUE_SLOT_SIZE(so->rx_opt.caplen);
pr_devel("[PFQ|%d] caplen:%zu -> slot_size:%zu\n",
so->id, so->rx_opt.caplen, so->rx_opt.slot_size);
} break;
case Q_SO_SET_RX_SLOTS:
{
typeof(so->rx_opt.size) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots > (size_t)rx_queue_slots) {
pr_devel("[PFQ|%d] invalid rx slots:%zu (max: %d)\n", so->id, slots, rx_queue_slots);
return -EPERM;
}
so->rx_opt.size = slots;
pr_devel("[PFQ|%d] rx_queue_slots:%zu\n", so->id, so->rx_opt.size);
} break;
case Q_SO_SET_TX_MAXLEN:
{
typeof (so->tx_opt.maxlen) maxlen;
if (optlen != sizeof(maxlen))
return -EINVAL;
if (copy_from_user(&maxlen, optval, optlen))
return -EFAULT;
if (maxlen > (size_t)max_len) {
pr_devel("[PFQ|%d] invalid maxlen:%zu (max: %d)\n", so->id, maxlen, max_len);
return -EPERM;
}
so->tx_opt.maxlen = maxlen;
so->tx_opt.slot_size = SPSC_QUEUE_SLOT_SIZE(so->tx_opt.maxlen); /* max_len: max length */
pr_devel("[PFQ|%d] tx_slot_size:%zu\n", so->id, so->rx_opt.slot_size);
} break;
case Q_SO_SET_TX_SLOTS:
{
typeof (so->tx_opt.size) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots & (slots-1))
{
pr_devel("[PFQ|%d] tx slots must be a power of two.\n", so->id);
return -EINVAL;
}
if (slots > (size_t)tx_queue_slots) {
pr_devel("[PFQ|%d] invalid tx slots:%zu (max: %d)\n", so->id, slots, tx_queue_slots);
return -EPERM;
}
so->tx_opt.size = slots;
pr_devel("[PFQ|%d] tx_queue_slots:%zu\n", so->id, so->tx_opt.size);
} break;
case Q_SO_GROUP_LEAVE:
{
int gid;
if (optlen != sizeof(gid))
return -EINVAL;
if (copy_from_user(&gid, optval, optlen))
return -EFAULT;
if (pfq_leave_group(gid, so->id) < 0) {
return -EFAULT;
}
pr_devel("[PFQ|%d] leave: gid:%d\n", so->id, gid);
} break;
case Q_SO_GROUP_FPROG:
{
struct pfq_fprog fprog;
if (optlen != sizeof(fprog))
return -EINVAL;
if (copy_from_user(&fprog, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, fprog.gid, "group fprog");
if (fprog.fcode.len > 0) /* set the filter */
{
struct sk_filter *filter = pfq_alloc_sk_filter(&fprog.fcode);
if (filter == NULL)
{
pr_devel("[PFQ|%d] fprog error: alloc_sk_filter for gid:%d\n", so->id, fprog.gid);
return -EINVAL;
}
__pfq_set_group_filter(fprog.gid, filter);
pr_devel("[PFQ|%d] fprog: gid:%d (fprog len %d bytes)\n", so->id, fprog.gid, fprog.fcode.len);
}
else /* reset the filter */
{
__pfq_set_group_filter(fprog.gid, NULL);
pr_devel("[PFQ|%d] fprog: gid:%d (resetting filter)\n", so->id, fprog.gid);
}
} break;
case Q_SO_GROUP_VLAN_FILT_TOGGLE:
{
struct pfq_vlan_toggle vlan;
if (optlen != sizeof(vlan))
return -EINVAL;
if (copy_from_user(&vlan, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, vlan.gid, "group vlan filt toggle");
__pfq_toggle_group_vlan_filters(vlan.gid, vlan.toggle);
pr_devel("[PFQ|%d] vlan filters %s for gid:%d\n", so->id, (vlan.toggle ? "enabled" : "disabled"), vlan.gid);
} break;
case Q_SO_GROUP_VLAN_FILT:
{
struct pfq_vlan_toggle filt;
if (optlen != sizeof(filt))
return -EINVAL;
if (copy_from_user(&filt, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, filt.gid, "group vlan filt");
if (filt.vid < -1 || filt.vid > 4094) {
pr_devel("[PFQ|%d] vlan_set error: gid:%d invalid vid:%d!\n", so->id, filt.gid, filt.vid);
return -EINVAL;
}
if (!__pfq_vlan_filters_enabled(filt.gid)) {
pr_devel("[PFQ|%d] vlan_set error: vlan filters disabled for gid:%d!\n", so->id, filt.gid);
return -EPERM;
}
if (filt.vid == -1) /* any */
{
int i;
for(i = 1; i < 4095; i++)
__pfq_set_group_vlan_filter(filt.gid, filt.toggle, i);
}
else
{
__pfq_set_group_vlan_filter(filt.gid, filt.toggle, filt.vid);
}
pr_devel("[PFQ|%d] vlan_set filter vid %d for gid:%d\n", so->id, filt.vid, filt.gid);
} break;
case Q_SO_TX_THREAD_BIND:
{
struct pfq_binding info;
if (optlen != sizeof(info))
return -EINVAL;
if (copy_from_user(&info, optval, optlen))
return -EFAULT;
rcu_read_lock();
if (!dev_get_by_index_rcu(sock_net(&so->sk), info.if_index))
{
rcu_read_unlock();
pr_devel("[PFQ|%d] TX bind: invalid if_index:%d\n", so->id, info.if_index);
return -EPERM;
}
rcu_read_unlock();
if (info.hw_queue < -1)
{
pr_devel("[PFQ|%d] TX bind: invalid queue:%d\n", so->id, info.hw_queue);
return -EPERM;
}
to->if_index = info.if_index;
to->hw_queue = info.hw_queue;
pr_devel("[PFQ|%d] TX bind: if_index:%d hw_queue:%d\n", so->id, to->if_index, to->hw_queue);
} break;
case Q_SO_TX_THREAD_START:
{
int cpu;
if (to->thread)
{
pr_devel("[PFQ|%d] TX thread already created on cpu %d!\n", so->id, to->cpu);
return -EPERM;
}
if (to->if_index == -1)
{
pr_devel("[PFQ|%d] socket TX not bound to any device!\n", so->id);
return -EPERM;
}
if (to->queue_ptr == NULL)
{
pr_devel("[PFQ|%d] socket not enabled!\n", so->id);
return -EPERM;
}
if (optlen != sizeof(cpu))
return -EINVAL;
if (copy_from_user(&cpu, optval, optlen))
return -EFAULT;
if (cpu < -1 || (cpu > -1 && !cpu_online(cpu)))
{
pr_devel("[PFQ|%d] invalid cpu (%d)!\n", so->id, cpu);
return -EPERM;
}
to->cpu = cpu;
pr_devel("[PFQ|%d] creating TX thread on cpu %d -> if_index:%d hw_queue:%d\n", so->id, to->cpu, to->if_index, to->hw_queue);
to->thread = kthread_create_on_node(pfq_tx_thread,
so,
to->cpu == -1 ? -1 : cpu_to_node(to->cpu),
"pfq_tx_%d", so->id);
if (IS_ERR(to->thread)) {
printk(KERN_INFO "[PFQ] kernel_thread() create failed on cpu %d!\n", to->cpu);
return PTR_ERR(to->thread);
}
if (to->cpu != -1)
kthread_bind(to->thread, to->cpu);
} break;
case Q_SO_TX_THREAD_STOP:
{
pr_devel("[PFQ|%d] stopping TX thread...\n", so->id);
if (!to->thread)
{
pr_devel("[PFQ|%d] TX thread not running!\n", so->id);
return -EPERM;
}
kthread_stop(to->thread);
to->thread = NULL;
pr_devel("[PFQ|%d] stop TX thread: done.\n", so->id);
} break;
case Q_SO_TX_THREAD_WAKEUP:
{
if (to->if_index == -1)
{
pr_devel("[PFQ|%d] socket TX not bound to any device!\n", so->id);
return -EPERM;
}
if (!to->thread)
{
pr_devel("[PFQ|%d] TX thread not running!\n", so->id);
return -EPERM;
}
wake_up_process(to->thread);
} break;
case Q_SO_TX_QUEUE_FLUSH:
{
struct net_device *dev;
if (to->if_index == -1)
{
pr_devel("[PFQ|%d] socket TX not bound to any device!\n", so->id);
return -EPERM;
}
if (to->thread && to->thread->state == TASK_RUNNING)
{
pr_devel("[PFQ|%d] TX thread is running!\n", so->id);
return -EPERM;
}
if (to->queue_ptr == NULL)
{
pr_devel("[PFQ|%d] socket not enabled!\n", so->id);
return -EPERM;
}
dev = dev_get_by_index(sock_net(&so->sk), to->if_index);
if (!dev)
{
pr_devel("[PFQ|%d] No such device (if_index = %d)\n", so->id, to->if_index);
return -EPERM;
}
pfq_tx_queue_flush(to, dev, get_cpu(), NUMA_NO_NODE);
put_cpu();
dev_put(dev);
} break;
case Q_SO_GROUP_FUNCTION:
{
struct pfq_group_computation tmp;
struct pfq_computation_descr *descr;
size_t psize, ucsize;
struct pfq_computation_tree *comp;
void *context;
if (optlen != sizeof(tmp))
return -EINVAL;
if (copy_from_user(&tmp, optval, optlen))
return -EFAULT;
CHECK_GROUP_ACCES(so->id, tmp.gid, "group computation");
if (copy_from_user(&psize, tmp.prog, sizeof(size_t)))
return -EFAULT;
pr_devel("[PFQ|%d] computation size: %zu\n", so->id, psize);
ucsize = sizeof(size_t) * 2 + psize * sizeof(struct pfq_functional_descr);
descr = kmalloc(ucsize, GFP_KERNEL);
if (descr == NULL) {
pr_devel("[PFQ|%d] computation: out of memory!\n", so->id);
return -ENOMEM;
}
if (copy_from_user(descr, tmp.prog, ucsize)) {
pr_devel("[PFQ|%d] computation: copy_from_user error!\n", so->id);
kfree(descr);
return -EFAULT;
}
/* print user computation */
pr_devel_computation_descr(descr);
/* ensure the correctness of the specified functional computation */
if (pfq_validate_computation_descr(descr) < 0) {
pr_devel("[PFQ|%d] invalid expression!\n", so->id);
return -EFAULT;
}
/* allocate context */
context = pfq_context_alloc(descr);
if (context == NULL) {
pr_devel("[PFQ|%d] context: alloc error!\n", so->id);
kfree(descr);
return -EFAULT;
}
/* allocate struct pfq_computation_tree */
comp = pfq_computation_alloc(descr);
if (comp == NULL) {
pr_devel("[PFQ|%d] computation: alloc error!\n", so->id);
kfree(context);
kfree(descr);
return -EFAULT;
}
/* link the functional computation */
if (pfq_computation_rtlink(descr, comp, context) < 0) {
pr_devel("[PFQ|%d] computation aborted!", so->id);
kfree(context);
kfree(descr);
kfree(comp);
return -EPERM;
}
/* print executable tree data structure */
pr_devel_computation_tree(comp);
/* exec init functions */
if (pfq_computation_init(comp) < 0) {
pr_devel("[PFQ|%d] computation initialization aborted!", so->id);
kfree(context);
kfree(descr);
kfree(comp);
return -EPERM;
}
/* set the new program */
if (pfq_set_group_prog(tmp.gid, comp, context) < 0) {
pr_devel("[PFQ|%d] set group program error!\n", so->id);
kfree(context);
kfree(descr);
kfree(comp);
return -EPERM;
}
kfree(descr);
return 0;
} break;
default:
{
found = false;
} break;
}
return found ? 0 : sock_setsockopt(sock, level, optname, optval, optlen);
}
int pfq_setsockopt(struct socket *sock,
int level, int optname,
char __user * optval,
#if(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31))
unsigned
#endif
int optlen)
{
struct pfq_sock *so = pfq_sk(sock->sk);
bool found = true;
if (so == NULL)
return -EINVAL;
switch(optname)
{
case Q_SO_ENABLE:
{
unsigned long addr;
int err = 0;
if (optlen != sizeof(addr))
return -EINVAL;
if (copy_from_user(&addr, optval, optlen))
return -EFAULT;
err = pfq_shared_queue_enable(so, addr);
if (err < 0) {
printk(KERN_INFO "[PFQ|%d] enable error!\n", so->id);
return err;
}
return 0;
} break;
case Q_SO_DISABLE:
{
int err = 0;
pfq_sock_tx_unbind(so);
msleep(Q_GRACE_PERIOD);
err = pfq_shared_queue_disable(so);
if (err < 0) {
printk(KERN_INFO "[PFQ|%d] disable error!\n", so->id);
return err;
}
} break;
case Q_SO_GROUP_BIND:
{
struct pfq_binding bind;
pfq_gid_t gid;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)bind.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] add bind: gid=%d not joined!\n", so->id, bind.gid);
return -EACCES;
}
if (!dev_get_by_index(sock_net(&so->sk), bind.ifindex)) {
printk(KERN_INFO "[PFQ|%d] bind: invalid ifindex=%d!\n", so->id, bind.ifindex);
return -EACCES;
}
pfq_devmap_update(map_set, bind.ifindex, bind.qindex, gid);
pr_devel("[PFQ|%d] group id=%d bind: device ifindex=%d qindex=%d\n",
so->id, bind.gid, bind.ifindex, bind.qindex);
} break;
case Q_SO_GROUP_UNBIND:
{
struct pfq_binding bind;
pfq_gid_t gid;
if (optlen != sizeof(struct pfq_binding))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)bind.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] group id=%d unbind: gid=%d not joined!\n", so->id, gid, bind.gid);
return -EACCES;
}
if (dev_put_by_index(sock_net(&so->sk), bind.ifindex) < 0) {
printk(KERN_INFO "[PFQ|%d] group id=%d unbind: invalid ifindex=%d!\n", so->id, gid, bind.ifindex);
return -EPERM;
}
pfq_devmap_update(map_reset, bind.ifindex, bind.qindex, gid);
pr_devel("[PFQ|%d] group id=%d unbind: device ifindex=%d qindex=%d\n",
so->id, gid, bind.ifindex, bind.qindex);
} break;
case Q_SO_EGRESS_BIND:
{
struct pfq_binding bind;
if (optlen != sizeof(bind))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
if (!dev_get_by_index(sock_net(&so->sk), bind.ifindex)) {
printk(KERN_INFO "[PFQ|%d] egress bind: invalid ifindex=%d\n", so->id, bind.ifindex);
return -EPERM;
}
if (bind.qindex < -1) {
printk(KERN_INFO "[PFQ|%d] egress bind: invalid qindex=%d\n", so->id, bind.qindex);
return -EPERM;
}
so->egress_type = pfq_endpoint_device;
so->egress_index = bind.ifindex;
so->egress_queue = bind.qindex;
pr_devel("[PFQ|%d] egress bind: device ifindex=%d qindex=%d\n",
so->id, so->egress_index, so->egress_queue);
} break;
case Q_SO_EGRESS_UNBIND:
{
if (so->egress_index &&
dev_put_by_index(sock_net(&so->sk), so->egress_index) < 0) {
printk(KERN_INFO "[PFQ|%d] egress bind: invalid if_index=%d\n", so->id, so->egress_index);
return -EPERM;
}
so->egress_type = pfq_endpoint_socket;
so->egress_index = 0;
so->egress_queue = 0;
pr_devel("[PFQ|%d] egress unbind.\n", so->id);
} break;
case Q_SO_SET_RX_TSTAMP:
{
int tstamp;
if (optlen != sizeof(so->opt.tstamp))
return -EINVAL;
if (copy_from_user(&tstamp, optval, optlen))
return -EFAULT;
tstamp = tstamp ? 1 : 0;
so->opt.tstamp = tstamp;
pr_devel("[PFQ|%d] timestamp enabled.\n", so->id);
} break;
case Q_SO_SET_RX_CAPLEN:
{
typeof(so->opt.caplen) caplen;
if (optlen != sizeof(caplen))
return -EINVAL;
if (copy_from_user(&caplen, optval, optlen))
return -EFAULT;
if (caplen > (size_t)capt_slot_size) {
printk(KERN_INFO "[PFQ|%d] invalid caplen=%zu (max %d)\n", so->id, caplen, capt_slot_size);
return -EPERM;
}
so->opt.caplen = caplen;
so->opt.rx_slot_size = Q_QUEUE_SLOT_SIZE(so->opt.caplen);
pr_devel("[PFQ|%d] caplen=%zu, slot_size=%zu\n",
so->id, so->opt.caplen, so->opt.rx_slot_size);
} break;
case Q_SO_SET_RX_SLOTS:
{
typeof(so->opt.rx_queue_len) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots > Q_MAX_SOCKQUEUE_LEN) {
printk(KERN_INFO "[PFQ|%d] invalid Rx slots=%zu (max %d)\n",
so->id, slots, Q_MAX_SOCKQUEUE_LEN);
return -EPERM;
}
so->opt.rx_queue_len = slots;
pr_devel("[PFQ|%d] rx_queue slots=%zu\n", so->id, so->opt.rx_queue_len);
} break;
case Q_SO_SET_TX_SLOTS:
{
typeof (so->opt.tx_queue_len) slots;
if (optlen != sizeof(slots))
return -EINVAL;
if (copy_from_user(&slots, optval, optlen))
return -EFAULT;
if (slots > Q_MAX_SOCKQUEUE_LEN) {
printk(KERN_INFO "[PFQ|%d] invalid Tx slots=%zu (max %d)\n",
so->id, slots, Q_MAX_SOCKQUEUE_LEN);
return -EPERM;
}
so->opt.tx_queue_len = slots;
pr_devel("[PFQ|%d] tx_queue slots=%zu\n", so->id, so->opt.tx_queue_len);
} break;
case Q_SO_SET_WEIGHT:
{
int weight;
if (optlen != sizeof(so->weight))
return -EINVAL;
if (copy_from_user(&weight, optval, optlen))
return -EFAULT;
if (weight < 1 || weight > (Q_MAX_SOCK_MASK/Q_MAX_ID)) {
printk(KERN_INFO "[PFQ|%d] weight=%d: invalid range (min 1, max %d)\n", so->id, weight,
Q_MAX_SOCK_MASK/Q_MAX_ID);
return -EPERM;
}
so->weight = weight;
/* invalidate per-cpu sock mask cache */
pfq_invalidate_percpu_eligible_mask(so->id);
pr_devel("[PFQ|%d] new weight set to %d.\n", so->id, weight);
} break;
case Q_SO_GROUP_LEAVE:
{
pfq_gid_t gid;
if (optlen != sizeof(gid))
return -EINVAL;
if (copy_from_user(&gid, optval, optlen))
return -EFAULT;
if (pfq_leave_group(gid, so->id) < 0)
return -EFAULT;
pr_devel("[PFQ|%d] group id=%d left.\n", so->id, gid);
} break;
case Q_SO_GROUP_FPROG:
{
struct pfq_fprog fprog;
pfq_gid_t gid;
if (optlen != sizeof(fprog))
return -EINVAL;
if (copy_from_user(&fprog, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)fprog.gid;
if (!pfq_has_joined_group(gid, so->id)) {
/* don't set the first and return */
return 0;
}
if (fprog.fcode.len > 0) { /* set the filter */
struct sk_filter *filter;
if (fprog.fcode.len == 1) {
struct sock_filter tmp;
/* get the first filter */
if (copy_from_user(&tmp, fprog.fcode.filter, sizeof(tmp)))
return -EFAULT;
/* check whether the first filter is a dummy BPF_RET */
if (BPF_CLASS(tmp.code) == BPF_RET) {
pr_devel("[PFQ|%d] fprog: BPF_RET optimized out!\n", so->id);
return 0;
}
}
filter = pfq_alloc_sk_filter(&fprog.fcode);
if (filter == NULL) {
printk(KERN_INFO "[PFQ|%d] fprog error: alloc_sk_filter for gid=%d\n",
so->id, fprog.gid);
return -EINVAL;
}
pfq_set_group_filter(gid, filter);
pr_devel("[PFQ|%d] fprog: gid=%d (fprog len %d bytes)\n",
so->id, fprog.gid, fprog.fcode.len);
}
else {
/* reset the filter */
pfq_set_group_filter(gid, NULL);
pr_devel("[PFQ|%d] fprog: gid=%d (resetting filter)\n", so->id, fprog.gid);
}
} break;
case Q_SO_GROUP_VLAN_FILT_TOGGLE:
{
struct pfq_vlan_toggle vlan;
pfq_gid_t gid;
if (optlen != sizeof(vlan))
return -EINVAL;
if (copy_from_user(&vlan, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)vlan.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] vlan filter toggle: gid=%d not joined!\n", so->id, vlan.gid);
return -EACCES;
}
pfq_toggle_group_vlan_filters(gid, vlan.toggle);
pr_devel("[PFQ|%d] vlan filters %s for gid=%d\n",
so->id, (vlan.toggle ? "enabled" : "disabled"), vlan.gid);
} break;
case Q_SO_GROUP_VLAN_FILT:
{
struct pfq_vlan_toggle filt;
pfq_gid_t gid;
if (optlen != sizeof(filt))
return -EINVAL;
if (copy_from_user(&filt, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)filt.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] vlan filter: gid=%d not joined!\n", so->id, filt.gid);
return -EACCES;
}
if (filt.vid < -1 || filt.vid > 4094) {
printk(KERN_INFO "[PFQ|%d] vlan error: invalid vid=%d for gid=%d!\n",
so->id, filt.vid, filt.gid);
return -EINVAL;
}
if (!pfq_vlan_filters_enabled(gid)) {
printk(KERN_INFO "[PFQ|%d] vlan error: vlan filters disabled for gid=%d!\n",
so->id, filt.gid);
return -EPERM;
}
if (filt.vid == -1) { /* any */
int i;
for(i = 1; i < 4095; i++)
{
pfq_set_group_vlan_filter(gid, filt.toggle, i);
}
}
else {
pfq_set_group_vlan_filter(gid, filt.toggle, filt.vid);
}
pr_devel("[PFQ|%d] vlan filter vid %d set for gid=%d\n", so->id, filt.vid, filt.gid);
} break;
case Q_SO_TX_BIND:
{
struct pfq_binding bind;
struct net_device *dev = NULL;
if (optlen != sizeof(bind))
return -EINVAL;
if (copy_from_user(&bind, optval, optlen))
return -EFAULT;
if (bind.tid < -1) {
printk(KERN_INFO "[PFQ|%d] Tx thread: invalid thread index (%d)!\n", so->id, bind.tid);
return -EPERM;
}
if (bind.tid >= 0 &&
so->opt.tx_num_async_queues >= Q_MAX_TX_QUEUES) {
printk(KERN_INFO "[PFQ|%d] Tx thread: max number of sock queues exceeded!\n", so->id);
return -EPERM;
}
if (bind.qindex < -1) {
printk(KERN_INFO "[PFQ|%d] Tx thread: invalid hw queue (%d)\n", so->id, bind.qindex);
return -EPERM;
}
/* get device */
if (bind.ifindex != -1 &&
!(dev = dev_get_by_index(sock_net(&so->sk), bind.ifindex))) {
printk(KERN_INFO "[PFQ|%d] Tx thread: invalid ifindex=%d\n", so->id, bind.ifindex);
return -EPERM;
}
/* update the socket queue information */
if (bind.tid >= 0) /* async queues */
{
int err = pfq_sock_tx_bind(so, bind.tid, bind.ifindex, bind.qindex, dev);
if (err < 0) {
if (bind.ifindex != -1)
dev_put_by_index(sock_net(&so->sk), bind.ifindex);
return err;
}
pr_devel("[PFQ|%d] Tx[%d] bind: if_index=%d qindex=%d\n", so->id, bind.tid, bind.ifindex, bind.qindex);
}
else /* sync queue */
{
so->opt.txq.def_ifindex = bind.ifindex;
so->opt.txq.def_queue = bind.qindex;
so->opt.txq.def_dev = dev;
pr_devel("[PFQ|%d] Tx bind: if_index=%d qindex=%d\n", so->id,
so->opt.txq.def_ifindex,
so->opt.txq.def_queue);
}
} break;
case Q_SO_TX_UNBIND:
{
pfq_sock_tx_unbind(so);
} break;
case Q_SO_TX_QUEUE:
{
int queue;
if (optlen != sizeof(queue))
return -EINVAL;
if (copy_from_user(&queue, optval, optlen))
return -EFAULT;
if (pfq_get_tx_queue(&so->opt, -1) == NULL) {
printk(KERN_INFO "[PFQ|%d] Tx queue: socket not enabled!\n", so->id);
return -EPERM;
}
if (queue == 0) { /* transmit Tx queue */
atomic_t stop = {0};
pfq_sk_queue_xmit(so, -1, Q_NO_KTHREAD, NUMA_NO_NODE, &stop);
return 0;
}
printk(KERN_INFO "[PFQ|%d] Tx queue: bad queue %d!\n", so->id, queue);
return -EPERM;
} break;
case Q_SO_GROUP_FUNCTION:
{
struct pfq_lang_computation_descr *descr = NULL;
struct pfq_lang_computation_tree *comp = NULL;
struct pfq_group_computation tmp;
size_t psize, ucsize;
void *context = NULL;
pfq_gid_t gid;
int err = 0;
if (optlen != sizeof(tmp))
return -EINVAL;
if (copy_from_user(&tmp, optval, optlen))
return -EFAULT;
gid = (__force pfq_gid_t)tmp.gid;
if (!pfq_has_joined_group(gid, so->id)) {
printk(KERN_INFO "[PFQ|%d] group computation: gid=%d not joined!\n", so->id, tmp.gid);
return -EACCES;
}
if (copy_from_user(&psize, tmp.prog, sizeof(size_t)))
return -EFAULT;
pr_devel("[PFQ|%d] computation size: %zu\n", so->id, psize);
ucsize = sizeof(size_t) * 2 + psize * sizeof(struct pfq_lang_functional_descr);
descr = kmalloc(ucsize, GFP_KERNEL);
if (descr == NULL) {
printk(KERN_INFO "[PFQ|%d] computation: out of memory!\n", so->id);
return -ENOMEM;
}
if (copy_from_user(descr, tmp.prog, ucsize)) {
printk(KERN_INFO "[PFQ|%d] computation: copy_from_user error!\n", so->id);
err = -EFAULT;
goto error;
}
/* print user computation */
pr_devel_computation_descr(descr);
/* check the correctness of computation */
if (pfq_lang_check_computation_descr(descr) < 0) {
printk(KERN_INFO "[PFQ|%d] invalid expression!\n", so->id);
err = -EFAULT;
goto error;
}
/* allocate context */
context = pfq_lang_context_alloc(descr);
if (context == NULL) {
printk(KERN_INFO "[PFQ|%d] context: alloc error!\n", so->id);
err = -EFAULT;
goto error;
}
/* allocate a pfq_lang_computation_tree */
comp = pfq_lang_computation_alloc(descr);
if (comp == NULL) {
printk(KERN_INFO "[PFQ|%d] computation: alloc error!\n", so->id);
err = -EFAULT;
goto error;
}
/* link functions of computation */
if (pfq_lang_computation_rtlink(descr, comp, context) < 0) {
printk(KERN_INFO "[PFQ|%d] computation aborted!", so->id);
err = -EPERM;
goto error;
}
/* print executable tree data structure */
pr_devel_computation_tree(comp);
/* run init functions */
if (pfq_lang_computation_init(comp) < 0) {
printk(KERN_INFO "[PFQ|%d] initialization of computation aborted!", so->id);
pfq_lang_computation_destruct(comp);
err = -EPERM;
goto error;
}
/* enable functional program */
if (pfq_set_group_prog(gid, comp, context) < 0) {
printk(KERN_INFO "[PFQ|%d] set group program error!\n", so->id);
err = -EPERM;
goto error;
}
kfree(descr);
return 0;
error: kfree(comp);
kfree(context);
kfree(descr);
return err;
} break;
default:
{
found = false;
} break;
}
return found ? 0 : sock_setsockopt(sock, level, optname, optval, optlen);
}