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IB/core: Add gid_type to gid attribute 

In order to support multiple GID types, we need to store the gid_type
with each GID. This is also aligned with the RoCE v2 annex "RoCEv2 PORT
GID table entries shall have a "GID type" attribute that denotes the L3
Address type". The currently supported GID is IB_GID_TYPE_IB which is
also RoCE v1 GID type.

This implies that gid_type should be added to roce_gid_table meta-data.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Matan Barak 2015-12-23 14:56:47 +02:00 committed by Doug Ledford
parent cee3c4d0c5
commit b39ffa1df5
13 changed files with 182 additions and 59 deletions
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138
drivers/infiniband/core/cache.c
View File

@ -64,6 +64,7 @@ enum gid_attr_find_mask {
GID_ATTR_FIND_MASK_GID = 1UL << 0,
GID_ATTR_FIND_MASK_NETDEV = 1UL << 1,
GID_ATTR_FIND_MASK_DEFAULT = 1UL << 2,
GID_ATTR_FIND_MASK_GID_TYPE = 1UL << 3,
};
enum gid_table_entry_props {
@ -125,6 +126,19 @@ static void dispatch_gid_change_event(struct ib_device *ib_dev, u8 port)
}
}
static const char * const gid_type_str[] = {
[IB_GID_TYPE_IB] = "IB/RoCE v1",
};
const char *ib_cache_gid_type_str(enum ib_gid_type gid_type)
{
if (gid_type < ARRAY_SIZE(gid_type_str) && gid_type_str[gid_type])
return gid_type_str[gid_type];
return "Invalid GID type";
}
EXPORT_SYMBOL(ib_cache_gid_type_str);
/* This function expects that rwlock will be write locked in all
* scenarios and that lock will be locked in sleep-able (RoCE)
* scenarios.
@ -233,6 +247,10 @@ static int find_gid(struct ib_gid_table *table, const union ib_gid *gid,
if (found >= 0)
continue;
if (mask & GID_ATTR_FIND_MASK_GID_TYPE &&
attr->gid_type != val->gid_type)
continue;
if (mask & GID_ATTR_FIND_MASK_GID &&
memcmp(gid, &data->gid, sizeof(*gid)))
continue;
@ -296,6 +314,7 @@ int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
write_lock_irq(&table->rwlock);
ix = find_gid(table, gid, attr, false, GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_NETDEV, &empty);
if (ix >= 0)
goto out_unlock;
@ -329,6 +348,7 @@ int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
ix = find_gid(table, gid, attr, false,
GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_NETDEV |
GID_ATTR_FIND_MASK_DEFAULT,
NULL);
@ -427,11 +447,13 @@ static int _ib_cache_gid_table_find(struct ib_device *ib_dev,
static int ib_cache_gid_find(struct ib_device *ib_dev,
const union ib_gid *gid,
enum ib_gid_type gid_type,
struct net_device *ndev, u8 *port,
u16 *index)
{
unsigned long mask = GID_ATTR_FIND_MASK_GID;
struct ib_gid_attr gid_attr_val = {.ndev = ndev};
unsigned long mask = GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE;
struct ib_gid_attr gid_attr_val = {.ndev = ndev, .gid_type = gid_type};
if (ndev)
mask |= GID_ATTR_FIND_MASK_NETDEV;
@ -442,14 +464,16 @@ static int ib_cache_gid_find(struct ib_device *ib_dev,
int ib_find_cached_gid_by_port(struct ib_device *ib_dev,
const union ib_gid *gid,
enum ib_gid_type gid_type,
u8 port, struct net_device *ndev,
u16 *index)
{
int local_index;
struct ib_gid_table **ports_table = ib_dev->cache.gid_cache;
struct ib_gid_table *table;
unsigned long mask = GID_ATTR_FIND_MASK_GID;
struct ib_gid_attr val = {.ndev = ndev};
unsigned long mask = GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE;
struct ib_gid_attr val = {.ndev = ndev, .gid_type = gid_type};
unsigned long flags;
if (port < rdma_start_port(ib_dev) ||
@ -607,15 +631,15 @@ static void cleanup_gid_table_port(struct ib_device *ib_dev, u8 port,
void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
struct net_device *ndev,
unsigned long gid_type_mask,
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_attr zattr_type = zattr;
struct ib_gid_table *table;
int ix;
union ib_gid current_gid;
struct ib_gid_attr current_gid_attr = {};
unsigned int gid_type;
table = ports_table[port - rdma_start_port(ib_dev)];
@ -623,55 +647,82 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
memset(&gid_attr, 0, sizeof(gid_attr));
gid_attr.ndev = ndev;
mutex_lock(&table->lock);
write_lock_irq(&table->rwlock);
ix = find_gid(table, NULL, NULL, true, GID_ATTR_FIND_MASK_DEFAULT, NULL);
for (gid_type = 0; gid_type < IB_GID_TYPE_SIZE; ++gid_type) {
int ix;
union ib_gid current_gid;
struct ib_gid_attr current_gid_attr = {};
/* Coudn't find default GID location */
WARN_ON(ix < 0);
if (1UL << gid_type & ~gid_type_mask)
continue;
if (!__ib_cache_gid_get(ib_dev, port, ix,
&current_gid, &current_gid_attr) &&
mode == IB_CACHE_GID_DEFAULT_MODE_SET &&
!memcmp(&gid, &current_gid, sizeof(gid)) &&
!memcmp(&gid_attr, &current_gid_attr, sizeof(gid_attr)))
goto unlock;
gid_attr.gid_type = gid_type;
if (memcmp(&current_gid, &zgid, sizeof(current_gid)) ||
memcmp(&current_gid_attr, &zattr,
sizeof(current_gid_attr))) {
if (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;
} else {
dispatch_gid_change_event(ib_dev, port);
mutex_lock(&table->lock);
write_lock_irq(&table->rwlock);
ix = find_gid(table, NULL, &gid_attr, true,
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_DEFAULT,
NULL);
/* Coudn't find default GID location */
WARN_ON(ix < 0);
zattr_type.gid_type = gid_type;
if (!__ib_cache_gid_get(ib_dev, port, ix,
&current_gid, &current_gid_attr) &&
mode == IB_CACHE_GID_DEFAULT_MODE_SET &&
!memcmp(&gid, &current_gid, sizeof(gid)) &&
!memcmp(&gid_attr, &current_gid_attr, sizeof(gid_attr)))
goto release;
if (memcmp(&current_gid, &zgid, sizeof(current_gid)) ||
memcmp(&current_gid_attr, &zattr_type,
sizeof(current_gid_attr))) {
if (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 release;
} else {
dispatch_gid_change_event(ib_dev, port);
}
}
}
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);
} else {
dispatch_gid_change_event(ib_dev, port);
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);
else
dispatch_gid_change_event(ib_dev, port);
}
}
unlock:
if (current_gid_attr.ndev)
dev_put(current_gid_attr.ndev);
write_unlock_irq(&table->rwlock);
mutex_unlock(&table->lock);
release:
if (current_gid_attr.ndev)
dev_put(current_gid_attr.ndev);
write_unlock_irq(&table->rwlock);
mutex_unlock(&table->lock);
}
}
static int gid_table_reserve_default(struct ib_device *ib_dev, u8 port,
struct ib_gid_table *table)
{
if (rdma_protocol_roce(ib_dev, port)) {
struct ib_gid_table_entry *entry = &table->data_vec[0];
unsigned int i;
unsigned long roce_gid_type_mask;
unsigned int num_default_gids;
unsigned int current_gid = 0;
roce_gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
num_default_gids = hweight_long(roce_gid_type_mask);
for (i = 0; i < num_default_gids && i < table->sz; i++) {
struct ib_gid_table_entry *entry =
&table->data_vec[i];
entry->props |= GID_TABLE_ENTRY_DEFAULT;
current_gid = find_next_bit(&roce_gid_type_mask,
BITS_PER_LONG,
current_gid);
entry->attr.gid_type = current_gid++;
}
return 0;
@ -794,11 +845,12 @@ EXPORT_SYMBOL(ib_get_cached_gid);
int ib_find_cached_gid(struct ib_device *device,
const union ib_gid *gid,
enum ib_gid_type gid_type,
struct net_device *ndev,
u8 *port_num,
u16 *index)
{
return ib_cache_gid_find(device, gid, ndev, port_num, index);
return ib_cache_gid_find(device, gid, gid_type, ndev, port_num, index);
}
EXPORT_SYMBOL(ib_find_cached_gid);

2
drivers/infiniband/core/cm.c
View File

@ -364,7 +364,7 @@ static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
read_lock_irqsave(&cm.device_lock, flags);
list_for_each_entry(cm_dev, &cm.device_list, list) {
if (!ib_find_cached_gid(cm_dev->ib_device, &path->sgid,
ndev, &p, NULL)) {
IB_GID_TYPE_IB, ndev, &p, NULL)) {
port = cm_dev->port[p-1];
break;
}

3
drivers/infiniband/core/cma.c
View File

@ -456,7 +456,8 @@ static inline int cma_validate_port(struct ib_device *device, u8 port,
if (dev_type == ARPHRD_ETHER)
ndev = dev_get_by_index(&init_net, bound_if_index);
ret = ib_find_cached_gid_by_port(device, gid, port, ndev, NULL);
ret = ib_find_cached_gid_by_port(device, gid, IB_GID_TYPE_IB, port,
ndev, NULL);
if (ndev)
dev_put(ndev);

4
drivers/infiniband/core/core_priv.h
View File

@ -70,8 +70,11 @@ enum ib_cache_gid_default_mode {
IB_CACHE_GID_DEFAULT_MODE_DELETE
};
const char *ib_cache_gid_type_str(enum ib_gid_type gid_type);
void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
struct net_device *ndev,
unsigned long gid_type_mask,
enum ib_cache_gid_default_mode mode);
int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
@ -87,6 +90,7 @@ int roce_gid_mgmt_init(void);
void roce_gid_mgmt_cleanup(void);
int roce_rescan_device(struct ib_device *ib_dev);
unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port);
int ib_cache_setup_one(struct ib_device *device);
void ib_cache_cleanup_one(struct ib_device *device);

9
drivers/infiniband/core/device.c
View File

@ -815,26 +815,31 @@ EXPORT_SYMBOL(ib_modify_port);
* a specified GID value occurs.
* @device: The device to query.
* @gid: The GID value to search for.
* @gid_type: Type of GID.
* @ndev: The ndev related to the GID to search for.
* @port_num: The port number of the device where the GID value was found.
* @index: The index into the GID table where the GID was found. This
* parameter may be NULL.
*/
int ib_find_gid(struct ib_device *device, union ib_gid *gid,
struct net_device *ndev, u8 *port_num, u16 *index)
enum ib_gid_type gid_type, struct net_device *ndev,
u8 *port_num, u16 *index)
{
union ib_gid tmp_gid;
int ret, port, i;
for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) {
if (rdma_cap_roce_gid_table(device, port)) {
if (!ib_find_cached_gid_by_port(device, gid, port,
if (!ib_find_cached_gid_by_port(device, gid, gid_type, port,
ndev, index)) {
*port_num = port;
return 0;
}
}
if (gid_type != IB_GID_TYPE_IB)
continue;
for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) {
ret = ib_query_gid(device, port, i, &tmp_gid, NULL);
if (ret)

2
drivers/infiniband/core/multicast.c
View File

@ -729,7 +729,7 @@ int ib_init_ah_from_mcmember(struct ib_device *device, u8 port_num,
u16 gid_index;
u8 p;
ret = ib_find_cached_gid(device, &rec->port_gid,
ret = ib_find_cached_gid(device, &rec->port_gid, IB_GID_TYPE_IB,
NULL, &p, &gid_index);
if (ret)
return ret;

60
drivers/infiniband/core/roce_gid_mgmt.c
View File

@ -67,17 +67,52 @@ struct netdev_event_work {
struct netdev_event_work_cmd cmds[ROCE_NETDEV_CALLBACK_SZ];
};
static const struct {
bool (*is_supported)(const struct ib_device *device, u8 port_num);
enum ib_gid_type gid_type;
} PORT_CAP_TO_GID_TYPE[] = {
{rdma_protocol_roce, IB_GID_TYPE_ROCE},
};
#define CAP_TO_GID_TABLE_SIZE ARRAY_SIZE(PORT_CAP_TO_GID_TYPE)
unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port)
{
int i;
unsigned int ret_flags = 0;
if (!rdma_protocol_roce(ib_dev, port))
return 1UL << IB_GID_TYPE_IB;
for (i = 0; i < CAP_TO_GID_TABLE_SIZE; i++)
if (PORT_CAP_TO_GID_TYPE[i].is_supported(ib_dev, port))
ret_flags |= 1UL << PORT_CAP_TO_GID_TYPE[i].gid_type;
return ret_flags;
}
EXPORT_SYMBOL(roce_gid_type_mask_support);
static void update_gid(enum gid_op_type gid_op, struct ib_device *ib_dev,
u8 port, union ib_gid *gid,
struct ib_gid_attr *gid_attr)
{
switch (gid_op) {
case GID_ADD:
ib_cache_gid_add(ib_dev, port, gid, gid_attr);
break;
case GID_DEL:
ib_cache_gid_del(ib_dev, port, gid, gid_attr);
break;
int i;
unsigned long gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
for (i = 0; i < IB_GID_TYPE_SIZE; i++) {
if ((1UL << i) & gid_type_mask) {
gid_attr->gid_type = i;
switch (gid_op) {
case GID_ADD:
ib_cache_gid_add(ib_dev, port,
gid, gid_attr);
break;
case GID_DEL:
ib_cache_gid_del(ib_dev, port,
gid, gid_attr);
break;
}
}
}
}
@ -203,6 +238,8 @@ static void enum_netdev_default_gids(struct ib_device *ib_dev,
u8 port, struct net_device *event_ndev,
struct net_device *rdma_ndev)
{
unsigned long gid_type_mask;
rcu_read_lock();
if (!rdma_ndev ||
((rdma_ndev != event_ndev &&
@ -215,7 +252,9 @@ static void enum_netdev_default_gids(struct ib_device *ib_dev,
}
rcu_read_unlock();
ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev,
gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev, gid_type_mask,
IB_CACHE_GID_DEFAULT_MODE_SET);
}
@ -237,9 +276,14 @@ static void bond_delete_netdev_default_gids(struct ib_device *ib_dev,
if (is_upper_dev_rcu(rdma_ndev, event_ndev) &&
is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev) ==
BONDING_SLAVE_STATE_INACTIVE) {
unsigned long gid_type_mask;
rcu_read_unlock();
gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev,
gid_type_mask,
IB_CACHE_GID_DEFAULT_MODE_DELETE);
} else {
rcu_read_unlock();

5
drivers/infiniband/core/sa_query.c
View File

@ -1014,8 +1014,8 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
ah_attr->ah_flags = IB_AH_GRH;
ah_attr->grh.dgid = rec->dgid;
ret = ib_find_cached_gid(device, &rec->sgid, ndev, &port_num,
&gid_index);
ret = ib_find_cached_gid(device, &rec->sgid, rec->gid_type, ndev,
&port_num, &gid_index);
if (ret) {
if (ndev)
dev_put(ndev);
@ -1157,6 +1157,7 @@ static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query,
mad->data, &rec);
rec.net = NULL;
rec.ifindex = 0;
rec.gid_type = IB_GID_TYPE_IB;
memset(rec.dmac, 0, ETH_ALEN);
query->callback(status, &rec, query->context);
} else

1
drivers/infiniband/core/uverbs_marshall.c
View File

@ -144,5 +144,6 @@ void ib_copy_path_rec_from_user(struct ib_sa_path_rec *dst,
memset(dst->dmac, 0, sizeof(dst->dmac));
dst->net = NULL;
dst->ifindex = 0;
dst->gid_type = IB_GID_TYPE_IB;
}
EXPORT_SYMBOL(ib_copy_path_rec_from_user);

1
drivers/infiniband/core/verbs.c
View File

@ -381,6 +381,7 @@ int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
if (!rdma_cap_eth_ah(device, port_num)) {
ret = ib_find_cached_gid_by_port(device, &grh->dgid,
IB_GID_TYPE_IB,
port_num, NULL,
&gid_index);
if (ret)

4
include/rdma/ib_cache.h
View File

@ -60,6 +60,7 @@ int ib_get_cached_gid(struct ib_device *device,
* a specified GID value occurs.
* @device: The device to query.
* @gid: The GID value to search for.
* @gid_type: The GID type to search for.
* @ndev: In RoCE, the net device of the device. NULL means ignore.
* @port_num: The port number of the device where the GID value was found.
* @index: The index into the cached GID table where the GID was found. This
@ -70,6 +71,7 @@ int ib_get_cached_gid(struct ib_device *device,
*/
int ib_find_cached_gid(struct ib_device *device,
const union ib_gid *gid,
enum ib_gid_type gid_type,
struct net_device *ndev,
u8 *port_num,
u16 *index);
@ -79,6 +81,7 @@ int ib_find_cached_gid(struct ib_device *device,
* GID value occurs
* @device: The device to query.
* @gid: The GID value to search for.
* @gid_type: The GID type to search for.
* @port_num: The port number of the device where the GID value sould be
* searched.
* @ndev: In RoCE, the net device of the device. Null means ignore.
@ -90,6 +93,7 @@ int ib_find_cached_gid(struct ib_device *device,
*/
int ib_find_cached_gid_by_port(struct ib_device *device,
const union ib_gid *gid,
enum ib_gid_type gid_type,
u8 port_num,
struct net_device *ndev,
u16 *index);

1
include/rdma/ib_sa.h
View File

@ -160,6 +160,7 @@ struct ib_sa_path_rec {
int ifindex;
/* ignored in IB */
struct net *net;
enum ib_gid_type gid_type;
};
static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec)

11
include/rdma/ib_verbs.h
View File

@ -69,7 +69,15 @@ union ib_gid {
extern union ib_gid zgid;
enum ib_gid_type {
/* If link layer is Ethernet, this is RoCE V1 */
IB_GID_TYPE_IB = 0,
IB_GID_TYPE_ROCE = 0,
IB_GID_TYPE_SIZE
};
struct ib_gid_attr {
enum ib_gid_type gid_type;
struct net_device *ndev;
};
@ -2245,7 +2253,8 @@ int ib_modify_port(struct ib_device *device,
struct ib_port_modify *port_modify);
int ib_find_gid(struct ib_device *device, union ib_gid *gid,
struct net_device *ndev, u8 *port_num, u16 *index);
enum ib_gid_type gid_type, struct net_device *ndev,
u8 *port_num, u16 *index);
int ib_find_pkey(struct ib_device *device,
u8 port_num, u16 pkey, u16 *index);