static void free_roce_gid_cache(struct ib_device *ib_dev, u8 port)
{
int i;
struct ib_roce_gid_cache *cache = ib_dev->cache.roce_gid_cache[port - 1];
if (!cache)
return;
for (i = 0; i < cache->sz; ++i) {
if (memcmp(&cache->data_vec[i].gid, &zgid,
sizeof(cache->data_vec[i].gid)))
write_gid(ib_dev, port, cache, i, &zgid, &zattr);
}
kfree(cache->data_vec);
kfree(cache);
}
int roce_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
struct net_device *ndev)
{
struct ib_roce_gid_cache *cache;
int ix;
if (!ib_dev->cache.roce_gid_cache)
return 0;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
mutex_lock(&cache->lock);
for (ix = 0; ix < cache->sz; ix++)
if (cache->data_vec[ix].attr.ndev == ndev)
write_gid(ib_dev, port, cache, ix, &zgid, &zattr);
mutex_unlock(&cache->lock);
return 0;
}
static int del_gid(struct ib_device *ib_dev, u8 port,
struct ib_gid_table *table, int ix,
bool default_gid) {
return write_gid(ib_dev, port, table, ix, &zgid, &zattr,
GID_TABLE_WRITE_ACTION_DEL, default_gid);
}
void roce_gid_cache_set_default_gid(struct ib_device *ib_dev, u8 port,
struct net_device *ndev,
unsigned long gid_type_mask,
enum roce_gid_cache_default_mode mode)
{
union ib_gid gid, current_gid;
struct ib_gid_attr gid_attr;
struct ib_roce_gid_cache *cache;
unsigned int gid_type;
unsigned int gid_index = 0;
cache = ib_dev->cache.roce_gid_cache[port - 1];
/* Default GID management is not valid in RoCEv1 compat mode.
* In general, this function should not write to entries that
* are not defined as defaults. In upstream such logic exists
* and this check should be moved elsewhere (gid_table_reserve_default)
*/
if (!roce_v1_noncompat_gid)
return;
if (!cache)
return;
if (roce_gid_cache_get_gid(ib_dev, port, 0, ¤t_gid, &gid_attr))
return;
if (mode == ROCE_GID_CACHE_DEFAULT_MODE_DELETE &&
!memcmp(¤t_gid, &zgid, sizeof(zgid)))
/* If gid at index 0 is 0, we assume that the entire table is
* empty. */
return;
rdma_make_default_gid(ndev, &gid, roce_v1_noncompat_gid ? true : false);
/* compare current default gid to the new one. If identical, no further
* action is needed.
* Comparing gid index 0 is enough because it is updated iff the others
* are. */
if (!memcmp(¤t_gid, &gid, sizeof(gid)) &&
mode == ROCE_GID_CACHE_DEFAULT_MODE_SET)
return;
memset(&gid_attr, 0, sizeof(gid_attr));
gid_attr.ndev = ndev;
for (gid_type = 0; gid_type < IB_GID_TYPE_SIZE; ++gid_type) {
if (1UL << gid_type & ~gid_type_mask)
continue;
gid_attr.gid_type = gid_type;
mutex_lock(&cache->lock);
/* First delete current gid */
if (mode == ROCE_GID_CACHE_DEFAULT_MODE_DELETE &&
write_gid(ib_dev, port, cache, gid_index, &zgid, &zattr)) {
pr_warn("roce_gid_cache: can't delete index %d for default gid %pI6\n",
gid_index, gid.raw);
mutex_unlock(&cache->lock);
++gid_index;
continue;
}
/* If needed, write the new default gid */
if (mode == ROCE_GID_CACHE_DEFAULT_MODE_SET &&
write_gid(ib_dev, port, cache, gid_index, &gid, &gid_attr))
pr_warn("roce_gid_cache: unable to add default gid %pI6\n",
gid.raw);
mutex_unlock(&cache->lock);
++gid_index;
}
}
