static int
_ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr,
unsigned long mask, bool default_gid)
{
struct ib_gid_table *table;
int ret = 0;
int ix;
table = rdma_gid_table(ib_dev, port);
mutex_lock(&table->lock);
ix = find_gid(table, gid, attr, default_gid, mask, NULL);
if (ix < 0) {
ret = -EINVAL;
goto out_unlock;
}
del_gid(ib_dev, port, table, ix);
dispatch_gid_change_event(ib_dev, port);
out_unlock:
mutex_unlock(&table->lock);
if (ret)
pr_debug("%s: can't delete gid %pI6 error=%d\n",
__func__, gid->raw, ret);
return ret;
}
int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
struct net_device *ndev)
{
struct ib_gid_table *table;
int ix;
bool deleted = false;
table = rdma_gid_table(ib_dev, port);
mutex_lock(&table->lock);
for (ix = 0; ix < table->sz; ix++) {
if (is_gid_entry_valid(table->data_vec[ix]) &&
table->data_vec[ix]->attr.ndev == ndev) {
del_gid(ib_dev, port, table, ix);
deleted = true;
}
}
mutex_unlock(&table->lock);
if (deleted)
dispatch_gid_change_event(ib_dev, port);
return 0;
}
void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
struct net_device *ndev,
enum ib_cache_gid_default_mode mode)
{
struct ib_gid_table **ports_table = ib_dev->cache.gid_cache;
union ib_gid gid;
struct ib_gid_attr gid_attr;
struct ib_gid_table *table;
int ix;
union ib_gid current_gid;
struct ib_gid_attr current_gid_attr = {};
table = ports_table[port - rdma_start_port(ib_dev)];
make_default_gid(ndev, &gid);
memset(&gid_attr, 0, sizeof(gid_attr));
gid_attr.ndev = ndev;
mutex_lock(&table->lock);
ix = find_gid(table, NULL, NULL, true, GID_ATTR_FIND_MASK_DEFAULT);
/* Coudn't find default GID location */
WARN_ON(ix < 0);
if (!__ib_cache_gid_get(ib_dev, port, ix,
¤t_gid, ¤t_gid_attr) &&
mode == IB_CACHE_GID_DEFAULT_MODE_SET &&
!memcmp(&gid, ¤t_gid, sizeof(gid)) &&
!memcmp(&gid_attr, ¤t_gid_attr, sizeof(gid_attr)))
goto unlock;
if ((memcmp(¤t_gid, &zgid, sizeof(current_gid)) ||
memcmp(¤t_gid_attr, &zattr,
sizeof(current_gid_attr))) &&
del_gid(ib_dev, port, table, ix, true)) {
pr_warn("ib_cache_gid: can't delete index %d for default gid %pI6\n",
ix, gid.raw);
goto unlock;
}
if (mode == IB_CACHE_GID_DEFAULT_MODE_SET)
if (add_gid(ib_dev, port, table, ix, &gid, &gid_attr, true))
pr_warn("ib_cache_gid: unable to add default gid %pI6\n",
gid.raw);
unlock:
if (current_gid_attr.ndev)
dev_put(current_gid_attr.ndev);
mutex_unlock(&table->lock);
}
static void cleanup_gid_table_port(struct ib_device *ib_dev, u8 port,
struct ib_gid_table *table)
{
int i;
if (!table)
return;
for (i = 0; i < table->sz; ++i) {
if (memcmp(&table->data_vec[i].gid, &zgid,
sizeof(table->data_vec[i].gid)))
del_gid(ib_dev, port, table, i,
table->data_vec[i].props &
GID_ATTR_FIND_MASK_DEFAULT);
}
}
int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
struct net_device *ndev)
{
struct ib_gid_table **ports_table = ib_dev->cache.gid_cache;
struct ib_gid_table *table;
int ix;
table = ports_table[port - rdma_start_port(ib_dev)];
mutex_lock(&table->lock);
for (ix = 0; ix < table->sz; ix++)
if (table->data_vec[ix].attr.ndev == ndev)
del_gid(ib_dev, port, table, ix, false);
mutex_unlock(&table->lock);
return 0;
}
static void cleanup_gid_table_port(struct ib_device *ib_dev, u8 port,
struct ib_gid_table *table)
{
int i;
bool deleted = false;
if (!table)
return;
mutex_lock(&table->lock);
for (i = 0; i < table->sz; ++i) {
if (is_gid_entry_valid(table->data_vec[i])) {
del_gid(ib_dev, port, table, i);
deleted = true;
}
}
mutex_unlock(&table->lock);
if (deleted)
dispatch_gid_change_event(ib_dev, port);
}
/**
* add_modify_gid - Add or modify GID table entry
*
* @table: GID table in which GID to be added or modified
* @attr: Attributes of the GID
*
* Returns 0 on success or appropriate error code. It accepts zero
* GID addition for non RoCE ports for HCA's who report them as valid
* GID. However such zero GIDs are not added to the cache.
*/
static int add_modify_gid(struct ib_gid_table *table,
const struct ib_gid_attr *attr)
{
struct ib_gid_table_entry *entry;
int ret = 0;
/*
* Invalidate any old entry in the table to make it safe to write to
* this index.
*/
if (is_gid_entry_valid(table->data_vec[attr->index]))
del_gid(attr->device, attr->port_num, table, attr->index);
/*
* Some HCA's report multiple GID entries with only one valid GID, and
* leave other unused entries as the zero GID. Convert zero GIDs to
* empty table entries instead of storing them.
*/
if (rdma_is_zero_gid(&attr->gid))
return 0;
entry = alloc_gid_entry(attr);
if (!entry)
return -ENOMEM;
if (rdma_protocol_roce(attr->device, attr->port_num)) {
ret = add_roce_gid(entry);
if (ret)
goto done;
}
store_gid_entry(table, entry);
return 0;
done:
put_gid_entry(entry);
return ret;
}
int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr)
{
struct ib_gid_table **ports_table = ib_dev->cache.gid_cache;
struct ib_gid_table *table;
int ix;
table = ports_table[port - rdma_start_port(ib_dev)];
mutex_lock(&table->lock);
ix = find_gid(table, gid, attr, false,
GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_NETDEV |
GID_ATTR_FIND_MASK_DEFAULT);
if (ix < 0)
goto out_unlock;
del_gid(ib_dev, port, table, ix, false);
out_unlock:
mutex_unlock(&table->lock);
return 0;
}
