Commit 7fc45cb6 authored by Shradha Gupta's avatar Shradha Gupta Committed by Leon Romanovsky

net: mana: Allow variable size indirection table

Allow variable size indirection table allocation in MANA instead
of using a constant value MANA_INDIRECT_TABLE_SIZE.
The size is now derived from the MANA_QUERY_VPORT_CONFIG and the
indirection table is allocated dynamically.
Signed-off-by: default avatarShradha Gupta <shradhagupta@linux.microsoft.com>
Link: https://lore.kernel.org/r/1718015319-9609-1-git-send-email-shradhagupta@linux.microsoft.comReviewed-by: default avatarDexuan Cui <decui@microsoft.com>
Reviewed-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 83a7eefe
...@@ -21,7 +21,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, ...@@ -21,7 +21,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
gc = mdev_to_gc(dev); gc = mdev_to_gc(dev);
req_buf_size = struct_size(req, indir_tab, MANA_INDIRECT_TABLE_SIZE); req_buf_size = struct_size(req, indir_tab, MANA_INDIRECT_TABLE_DEF_SIZE);
req = kzalloc(req_buf_size, GFP_KERNEL); req = kzalloc(req_buf_size, GFP_KERNEL);
if (!req) if (!req)
return -ENOMEM; return -ENOMEM;
...@@ -41,18 +41,18 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, ...@@ -41,18 +41,18 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
if (log_ind_tbl_size) if (log_ind_tbl_size)
req->rss_enable = true; req->rss_enable = true;
req->num_indir_entries = MANA_INDIRECT_TABLE_SIZE; req->num_indir_entries = MANA_INDIRECT_TABLE_DEF_SIZE;
req->indir_tab_offset = offsetof(struct mana_cfg_rx_steer_req_v2, req->indir_tab_offset = offsetof(struct mana_cfg_rx_steer_req_v2,
indir_tab); indir_tab);
req->update_indir_tab = true; req->update_indir_tab = true;
req->cqe_coalescing_enable = 1; req->cqe_coalescing_enable = 1;
/* The ind table passed to the hardware must have /* The ind table passed to the hardware must have
* MANA_INDIRECT_TABLE_SIZE entries. Adjust the verb * MANA_INDIRECT_TABLE_DEF_SIZE entries. Adjust the verb
* ind_table to MANA_INDIRECT_TABLE_SIZE if required * ind_table to MANA_INDIRECT_TABLE_SIZE if required
*/ */
ibdev_dbg(&dev->ib_dev, "ind table size %u\n", 1 << log_ind_tbl_size); ibdev_dbg(&dev->ib_dev, "ind table size %u\n", 1 << log_ind_tbl_size);
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { for (i = 0; i < MANA_INDIRECT_TABLE_DEF_SIZE; i++) {
req->indir_tab[i] = ind_table[i % (1 << log_ind_tbl_size)]; req->indir_tab[i] = ind_table[i % (1 << log_ind_tbl_size)];
ibdev_dbg(&dev->ib_dev, "index %u handle 0x%llx\n", i, ibdev_dbg(&dev->ib_dev, "index %u handle 0x%llx\n", i,
req->indir_tab[i]); req->indir_tab[i]);
...@@ -137,7 +137,7 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd, ...@@ -137,7 +137,7 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
} }
ind_tbl_size = 1 << ind_tbl->log_ind_tbl_size; ind_tbl_size = 1 << ind_tbl->log_ind_tbl_size;
if (ind_tbl_size > MANA_INDIRECT_TABLE_SIZE) { if (ind_tbl_size > MANA_INDIRECT_TABLE_DEF_SIZE) {
ibdev_dbg(&mdev->ib_dev, ibdev_dbg(&mdev->ib_dev,
"Indirect table size %d exceeding limit\n", "Indirect table size %d exceeding limit\n",
ind_tbl_size); ind_tbl_size);
......
...@@ -481,7 +481,7 @@ static int mana_get_tx_queue(struct net_device *ndev, struct sk_buff *skb, ...@@ -481,7 +481,7 @@ static int mana_get_tx_queue(struct net_device *ndev, struct sk_buff *skb,
struct sock *sk = skb->sk; struct sock *sk = skb->sk;
int txq; int txq;
txq = apc->indir_table[hash & MANA_INDIRECT_TABLE_MASK]; txq = apc->indir_table[hash & (apc->indir_table_sz - 1)];
if (txq != old_q && sk && sk_fullsock(sk) && if (txq != old_q && sk && sk_fullsock(sk) &&
rcu_access_pointer(sk->sk_dst_cache)) rcu_access_pointer(sk->sk_dst_cache))
...@@ -721,6 +721,13 @@ static void mana_cleanup_port_context(struct mana_port_context *apc) ...@@ -721,6 +721,13 @@ static void mana_cleanup_port_context(struct mana_port_context *apc)
apc->rxqs = NULL; apc->rxqs = NULL;
} }
static void mana_cleanup_indir_table(struct mana_port_context *apc)
{
apc->indir_table_sz = 0;
kfree(apc->indir_table);
kfree(apc->rxobj_table);
}
static int mana_init_port_context(struct mana_port_context *apc) static int mana_init_port_context(struct mana_port_context *apc)
{ {
apc->rxqs = kcalloc(apc->num_queues, sizeof(struct mana_rxq *), apc->rxqs = kcalloc(apc->num_queues, sizeof(struct mana_rxq *),
...@@ -962,7 +969,16 @@ static int mana_query_vport_cfg(struct mana_port_context *apc, u32 vport_index, ...@@ -962,7 +969,16 @@ static int mana_query_vport_cfg(struct mana_port_context *apc, u32 vport_index,
*max_sq = resp.max_num_sq; *max_sq = resp.max_num_sq;
*max_rq = resp.max_num_rq; *max_rq = resp.max_num_rq;
*num_indir_entry = resp.num_indirection_ent; if (resp.num_indirection_ent > 0 &&
resp.num_indirection_ent <= MANA_INDIRECT_TABLE_MAX_SIZE &&
is_power_of_2(resp.num_indirection_ent)) {
*num_indir_entry = resp.num_indirection_ent;
} else {
netdev_warn(apc->ndev,
"Setting indirection table size to default %d for vPort %d\n",
MANA_INDIRECT_TABLE_DEF_SIZE, apc->port_idx);
*num_indir_entry = MANA_INDIRECT_TABLE_DEF_SIZE;
}
apc->port_handle = resp.vport; apc->port_handle = resp.vport;
ether_addr_copy(apc->mac_addr, resp.mac_addr); ether_addr_copy(apc->mac_addr, resp.mac_addr);
...@@ -1054,14 +1070,13 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, ...@@ -1054,14 +1070,13 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc,
bool update_default_rxobj, bool update_key, bool update_default_rxobj, bool update_key,
bool update_tab) bool update_tab)
{ {
u16 num_entries = MANA_INDIRECT_TABLE_SIZE;
struct mana_cfg_rx_steer_req_v2 *req; struct mana_cfg_rx_steer_req_v2 *req;
struct mana_cfg_rx_steer_resp resp = {}; struct mana_cfg_rx_steer_resp resp = {};
struct net_device *ndev = apc->ndev; struct net_device *ndev = apc->ndev;
u32 req_buf_size; u32 req_buf_size;
int err; int err;
req_buf_size = struct_size(req, indir_tab, num_entries); req_buf_size = struct_size(req, indir_tab, apc->indir_table_sz);
req = kzalloc(req_buf_size, GFP_KERNEL); req = kzalloc(req_buf_size, GFP_KERNEL);
if (!req) if (!req)
return -ENOMEM; return -ENOMEM;
...@@ -1072,7 +1087,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, ...@@ -1072,7 +1087,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc,
req->hdr.req.msg_version = GDMA_MESSAGE_V2; req->hdr.req.msg_version = GDMA_MESSAGE_V2;
req->vport = apc->port_handle; req->vport = apc->port_handle;
req->num_indir_entries = num_entries; req->num_indir_entries = apc->indir_table_sz;
req->indir_tab_offset = offsetof(struct mana_cfg_rx_steer_req_v2, req->indir_tab_offset = offsetof(struct mana_cfg_rx_steer_req_v2,
indir_tab); indir_tab);
req->rx_enable = rx; req->rx_enable = rx;
...@@ -1111,7 +1126,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, ...@@ -1111,7 +1126,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc,
} }
netdev_info(ndev, "Configured steering vPort %llu entries %u\n", netdev_info(ndev, "Configured steering vPort %llu entries %u\n",
apc->port_handle, num_entries); apc->port_handle, apc->indir_table_sz);
out: out:
kfree(req); kfree(req);
return err; return err;
...@@ -2344,11 +2359,33 @@ static int mana_create_vport(struct mana_port_context *apc, ...@@ -2344,11 +2359,33 @@ static int mana_create_vport(struct mana_port_context *apc,
return mana_create_txq(apc, net); return mana_create_txq(apc, net);
} }
static int mana_rss_table_alloc(struct mana_port_context *apc)
{
if (!apc->indir_table_sz) {
netdev_err(apc->ndev,
"Indirection table size not set for vPort %d\n",
apc->port_idx);
return -EINVAL;
}
apc->indir_table = kcalloc(apc->indir_table_sz, sizeof(u32), GFP_KERNEL);
if (!apc->indir_table)
return -ENOMEM;
apc->rxobj_table = kcalloc(apc->indir_table_sz, sizeof(mana_handle_t), GFP_KERNEL);
if (!apc->rxobj_table) {
kfree(apc->indir_table);
return -ENOMEM;
}
return 0;
}
static void mana_rss_table_init(struct mana_port_context *apc) static void mana_rss_table_init(struct mana_port_context *apc)
{ {
int i; int i;
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) for (i = 0; i < apc->indir_table_sz; i++)
apc->indir_table[i] = apc->indir_table[i] =
ethtool_rxfh_indir_default(i, apc->num_queues); ethtool_rxfh_indir_default(i, apc->num_queues);
} }
...@@ -2361,7 +2398,7 @@ int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx, ...@@ -2361,7 +2398,7 @@ int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx,
int i; int i;
if (update_tab) { if (update_tab) {
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { for (i = 0; i < apc->indir_table_sz; i++) {
queue_idx = apc->indir_table[i]; queue_idx = apc->indir_table[i];
apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj; apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj;
} }
...@@ -2466,7 +2503,6 @@ static int mana_init_port(struct net_device *ndev) ...@@ -2466,7 +2503,6 @@ static int mana_init_port(struct net_device *ndev)
struct mana_port_context *apc = netdev_priv(ndev); struct mana_port_context *apc = netdev_priv(ndev);
u32 max_txq, max_rxq, max_queues; u32 max_txq, max_rxq, max_queues;
int port_idx = apc->port_idx; int port_idx = apc->port_idx;
u32 num_indirect_entries;
int err; int err;
err = mana_init_port_context(apc); err = mana_init_port_context(apc);
...@@ -2474,7 +2510,7 @@ static int mana_init_port(struct net_device *ndev) ...@@ -2474,7 +2510,7 @@ static int mana_init_port(struct net_device *ndev)
return err; return err;
err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq, err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq,
&num_indirect_entries); &apc->indir_table_sz);
if (err) { if (err) {
netdev_err(ndev, "Failed to query info for vPort %d\n", netdev_err(ndev, "Failed to query info for vPort %d\n",
port_idx); port_idx);
...@@ -2723,6 +2759,10 @@ static int mana_probe_port(struct mana_context *ac, int port_idx, ...@@ -2723,6 +2759,10 @@ static int mana_probe_port(struct mana_context *ac, int port_idx,
if (err) if (err)
goto free_net; goto free_net;
err = mana_rss_table_alloc(apc);
if (err)
goto reset_apc;
netdev_lockdep_set_classes(ndev); netdev_lockdep_set_classes(ndev);
ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
...@@ -2739,11 +2779,13 @@ static int mana_probe_port(struct mana_context *ac, int port_idx, ...@@ -2739,11 +2779,13 @@ static int mana_probe_port(struct mana_context *ac, int port_idx,
err = register_netdev(ndev); err = register_netdev(ndev);
if (err) { if (err) {
netdev_err(ndev, "Unable to register netdev.\n"); netdev_err(ndev, "Unable to register netdev.\n");
goto reset_apc; goto free_indir;
} }
return 0; return 0;
free_indir:
mana_cleanup_indir_table(apc);
reset_apc: reset_apc:
kfree(apc->rxqs); kfree(apc->rxqs);
apc->rxqs = NULL; apc->rxqs = NULL;
...@@ -2872,16 +2914,30 @@ int mana_probe(struct gdma_dev *gd, bool resuming) ...@@ -2872,16 +2914,30 @@ int mana_probe(struct gdma_dev *gd, bool resuming)
if (!resuming) { if (!resuming) {
for (i = 0; i < ac->num_ports; i++) { for (i = 0; i < ac->num_ports; i++) {
err = mana_probe_port(ac, i, &ac->ports[i]); err = mana_probe_port(ac, i, &ac->ports[i]);
if (err) /* we log the port for which the probe failed and stop
* probes for subsequent ports.
* Note that we keep running ports, for which the probes
* were successful, unless add_adev fails too
*/
if (err) {
dev_err(dev, "Probe Failed for port %d\n", i);
break; break;
}
} }
} else { } else {
for (i = 0; i < ac->num_ports; i++) { for (i = 0; i < ac->num_ports; i++) {
rtnl_lock(); rtnl_lock();
err = mana_attach(ac->ports[i]); err = mana_attach(ac->ports[i]);
rtnl_unlock(); rtnl_unlock();
if (err) /* we log the port for which the attach failed and stop
* attach for subsequent ports
* Note that we keep running ports, for which the attach
* were successful, unless add_adev fails too
*/
if (err) {
dev_err(dev, "Attach Failed for port %d\n", i);
break; break;
}
} }
} }
...@@ -2897,6 +2953,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending) ...@@ -2897,6 +2953,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending)
{ {
struct gdma_context *gc = gd->gdma_context; struct gdma_context *gc = gd->gdma_context;
struct mana_context *ac = gd->driver_data; struct mana_context *ac = gd->driver_data;
struct mana_port_context *apc;
struct device *dev = gc->dev; struct device *dev = gc->dev;
struct net_device *ndev; struct net_device *ndev;
int err; int err;
...@@ -2908,6 +2965,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending) ...@@ -2908,6 +2965,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending)
for (i = 0; i < ac->num_ports; i++) { for (i = 0; i < ac->num_ports; i++) {
ndev = ac->ports[i]; ndev = ac->ports[i];
apc = netdev_priv(ndev);
if (!ndev) { if (!ndev) {
if (i == 0) if (i == 0)
dev_err(dev, "No net device to remove\n"); dev_err(dev, "No net device to remove\n");
...@@ -2931,6 +2989,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending) ...@@ -2931,6 +2989,7 @@ void mana_remove(struct gdma_dev *gd, bool suspending)
} }
unregister_netdevice(ndev); unregister_netdevice(ndev);
mana_cleanup_indir_table(apc);
rtnl_unlock(); rtnl_unlock();
......
...@@ -245,7 +245,9 @@ static u32 mana_get_rxfh_key_size(struct net_device *ndev) ...@@ -245,7 +245,9 @@ static u32 mana_get_rxfh_key_size(struct net_device *ndev)
static u32 mana_rss_indir_size(struct net_device *ndev) static u32 mana_rss_indir_size(struct net_device *ndev)
{ {
return MANA_INDIRECT_TABLE_SIZE; struct mana_port_context *apc = netdev_priv(ndev);
return apc->indir_table_sz;
} }
static int mana_get_rxfh(struct net_device *ndev, static int mana_get_rxfh(struct net_device *ndev,
...@@ -257,7 +259,7 @@ static int mana_get_rxfh(struct net_device *ndev, ...@@ -257,7 +259,7 @@ static int mana_get_rxfh(struct net_device *ndev,
rxfh->hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */ rxfh->hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
if (rxfh->indir) { if (rxfh->indir) {
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) for (i = 0; i < apc->indir_table_sz; i++)
rxfh->indir[i] = apc->indir_table[i]; rxfh->indir[i] = apc->indir_table[i];
} }
...@@ -273,8 +275,8 @@ static int mana_set_rxfh(struct net_device *ndev, ...@@ -273,8 +275,8 @@ static int mana_set_rxfh(struct net_device *ndev,
{ {
struct mana_port_context *apc = netdev_priv(ndev); struct mana_port_context *apc = netdev_priv(ndev);
bool update_hash = false, update_table = false; bool update_hash = false, update_table = false;
u32 save_table[MANA_INDIRECT_TABLE_SIZE];
u8 save_key[MANA_HASH_KEY_SIZE]; u8 save_key[MANA_HASH_KEY_SIZE];
u32 *save_table;
int i, err; int i, err;
if (!apc->port_is_up) if (!apc->port_is_up)
...@@ -284,13 +286,19 @@ static int mana_set_rxfh(struct net_device *ndev, ...@@ -284,13 +286,19 @@ static int mana_set_rxfh(struct net_device *ndev,
rxfh->hfunc != ETH_RSS_HASH_TOP) rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP; return -EOPNOTSUPP;
save_table = kcalloc(apc->indir_table_sz, sizeof(u32), GFP_KERNEL);
if (!save_table)
return -ENOMEM;
if (rxfh->indir) { if (rxfh->indir) {
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) for (i = 0; i < apc->indir_table_sz; i++)
if (rxfh->indir[i] >= apc->num_queues) if (rxfh->indir[i] >= apc->num_queues) {
return -EINVAL; err = -EINVAL;
goto cleanup;
}
update_table = true; update_table = true;
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) { for (i = 0; i < apc->indir_table_sz; i++) {
save_table[i] = apc->indir_table[i]; save_table[i] = apc->indir_table[i];
apc->indir_table[i] = rxfh->indir[i]; apc->indir_table[i] = rxfh->indir[i];
} }
...@@ -306,7 +314,7 @@ static int mana_set_rxfh(struct net_device *ndev, ...@@ -306,7 +314,7 @@ static int mana_set_rxfh(struct net_device *ndev,
if (err) { /* recover to original values */ if (err) { /* recover to original values */
if (update_table) { if (update_table) {
for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) for (i = 0; i < apc->indir_table_sz; i++)
apc->indir_table[i] = save_table[i]; apc->indir_table[i] = save_table[i];
} }
...@@ -316,6 +324,9 @@ static int mana_set_rxfh(struct net_device *ndev, ...@@ -316,6 +324,9 @@ static int mana_set_rxfh(struct net_device *ndev,
mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table); mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
} }
cleanup:
kfree(save_table);
return err; return err;
} }
......
...@@ -543,11 +543,13 @@ enum { ...@@ -543,11 +543,13 @@ enum {
*/ */
#define GDMA_DRV_CAP_FLAG_1_NAPI_WKDONE_FIX BIT(2) #define GDMA_DRV_CAP_FLAG_1_NAPI_WKDONE_FIX BIT(2)
#define GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG BIT(3) #define GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG BIT(3)
#define GDMA_DRV_CAP_FLAG_1_VARIABLE_INDIRECTION_TABLE_SUPPORT BIT(5)
#define GDMA_DRV_CAP_FLAGS1 \ #define GDMA_DRV_CAP_FLAGS1 \
(GDMA_DRV_CAP_FLAG_1_EQ_SHARING_MULTI_VPORT | \ (GDMA_DRV_CAP_FLAG_1_EQ_SHARING_MULTI_VPORT | \
GDMA_DRV_CAP_FLAG_1_NAPI_WKDONE_FIX | \ GDMA_DRV_CAP_FLAG_1_NAPI_WKDONE_FIX | \
GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG) GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG | \
GDMA_DRV_CAP_FLAG_1_VARIABLE_INDIRECTION_TABLE_SUPPORT)
#define GDMA_DRV_CAP_FLAGS2 0 #define GDMA_DRV_CAP_FLAGS2 0
......
...@@ -30,8 +30,8 @@ enum TRI_STATE { ...@@ -30,8 +30,8 @@ enum TRI_STATE {
}; };
/* Number of entries for hardware indirection table must be in power of 2 */ /* Number of entries for hardware indirection table must be in power of 2 */
#define MANA_INDIRECT_TABLE_SIZE 64 #define MANA_INDIRECT_TABLE_MAX_SIZE 512
#define MANA_INDIRECT_TABLE_MASK (MANA_INDIRECT_TABLE_SIZE - 1) #define MANA_INDIRECT_TABLE_DEF_SIZE 64
/* The Toeplitz hash key's length in bytes: should be multiple of 8 */ /* The Toeplitz hash key's length in bytes: should be multiple of 8 */
#define MANA_HASH_KEY_SIZE 40 #define MANA_HASH_KEY_SIZE 40
...@@ -410,10 +410,11 @@ struct mana_port_context { ...@@ -410,10 +410,11 @@ struct mana_port_context {
struct mana_tx_qp *tx_qp; struct mana_tx_qp *tx_qp;
/* Indirection Table for RX & TX. The values are queue indexes */ /* Indirection Table for RX & TX. The values are queue indexes */
u32 indir_table[MANA_INDIRECT_TABLE_SIZE]; u32 *indir_table;
u32 indir_table_sz;
/* Indirection table containing RxObject Handles */ /* Indirection table containing RxObject Handles */
mana_handle_t rxobj_table[MANA_INDIRECT_TABLE_SIZE]; mana_handle_t *rxobj_table;
/* Hash key used by the NIC */ /* Hash key used by the NIC */
u8 hashkey[MANA_HASH_KEY_SIZE]; u8 hashkey[MANA_HASH_KEY_SIZE];
......
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