int ptlrpc_uuid_to_peer(struct obd_uuid *uuid,
lnet_process_id_t *peer, lnet_nid_t *self)
{
int best_dist = 0;
__u32 best_order = 0;
int count = 0;
int rc = -ENOENT;
int portals_compatibility;
int dist;
__u32 order;
lnet_nid_t dst_nid;
lnet_nid_t src_nid;
portals_compatibility = LNetCtl(IOC_LIBCFS_PORTALS_COMPATIBILITY, NULL);
peer->pid = LUSTRE_SRV_LNET_PID;
/* Choose the matching UUID that's closest */
while (lustre_uuid_to_peer(uuid->uuid, &dst_nid, count++) == 0) {
dist = LNetDist(dst_nid, &src_nid, &order);
if (dist < 0)
continue;
if (dist == 0) { /* local! use loopback LND */
peer->nid = *self = LNET_MKNID(LNET_MKNET(LOLND, 0), 0);
rc = 0;
break;
}
if (rc < 0 ||
dist < best_dist ||
(dist == best_dist && order < best_order)) {
best_dist = dist;
best_order = order;
if (portals_compatibility > 1) {
/* Strong portals compatibility: Zero the nid's
* NET, so if I'm reading new config logs, or
* getting configured by (new) lconf I can
* still talk to old servers. */
dst_nid = LNET_MKNID(0, LNET_NIDADDR(dst_nid));
src_nid = LNET_MKNID(0, LNET_NIDADDR(src_nid));
}
peer->nid = dst_nid;
*self = src_nid;
rc = 0;
}
}
CDEBUG(D_NET,"%s->%s\n", uuid->uuid, libcfs_id2str(*peer));
return rc;
}
static int
lnet_ioctl(unsigned int cmd, struct libcfs_ioctl_hdr *hdr)
{
int rc;
switch (cmd) {
case IOC_LIBCFS_CONFIGURE: {
struct libcfs_ioctl_data *data =
(struct libcfs_ioctl_data *)hdr;
if (data->ioc_hdr.ioc_len < sizeof(*data))
return -EINVAL;
the_lnet.ln_nis_from_mod_params = data->ioc_flags;
return lnet_configure(NULL);
}
case IOC_LIBCFS_UNCONFIGURE:
return lnet_unconfigure();
case IOC_LIBCFS_ADD_NET:
return lnet_dyn_configure(hdr);
case IOC_LIBCFS_DEL_NET:
return lnet_dyn_unconfigure(hdr);
default:
/*
* Passing LNET_PID_ANY only gives me a ref if the net is up
* already; I'll need it to ensure the net can't go down while
* I'm called into it
*/
rc = LNetNIInit(LNET_PID_ANY);
if (rc >= 0) {
rc = LNetCtl(cmd, hdr);
LNetNIFini();
}
return rc;
}
}
int
lnet_ioctl(unsigned int cmd, struct libcfs_ioctl_data *data)
{
int rc;
switch (cmd) {
case IOC_LIBCFS_CONFIGURE:
return lnet_configure(NULL);
case IOC_LIBCFS_UNCONFIGURE:
return lnet_unconfigure();
default:
/* Passing LNET_PID_ANY only gives me a ref if the net is up
* already; I'll need it to ensure the net can't go down while
* I'm called into it */
rc = LNetNIInit(LNET_PID_ANY);
if (rc >= 0) {
rc = LNetCtl(cmd, data);
LNetNIFini();
}
return rc;
}
}
