提交 c71b5ad0 编写于 作者: D David S. Miller

Merge branch 'mlx5e-next'

Amir Vadai says:

====================
net/mlx5e: Driver updates 04-Aug-2015

This patchset introduces two features to the ConnectX-4 driver: Patch 8/8
("Support physical port counters") exposes some hardware counters through
ethtool. Rest of the patches are preparation and usage of what we call
light-weight netdev open/close. Some flows that used to be in the ndo_open/stop
are moved to the PCI probe/remove flows - i.e. we will make the netdev
open/close operations more "light-weight".

The benefits of this change are:
1) Reduce the execution time of the stop/open operations.
2) Avoid saving SW shadows of resource configurations that must
   persist through stop/open operations (e.g flow table steering
   rules), and avoid deleting/applying them from/to the device upon
   netdev stop/open.
3) Avoid synchronizing threads that access those resources with the
   netdev stop/open threads.

Instead of create/destroy the resource during netdev open/stop, This patchset
changes the behavior such that upon netdev stop, traffic is redirected to a
"Drop RQ" (a RQ that silently drops, at the NIC HW level all incoming traffic).
After redirecting the traffic, RX/TX software resources could be destroyed.
During netdev open, the RX/TX rings are created and traffic is redirected to
the RX rings.

Patchset was applied and tested over commit ba7591d8 ("ebpf: add skb->hash to
offset map for usage in {cls, act}_bpf or filters")
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 adc4cc99 efea389d
master alk-4.19.24 alk-4.19.30 alk-4.19.34 alk-4.19.36 alk-4.19.43 alk-4.19.48 alk-4.19.57 ck-4.19.67 ck-4.19.81 ck-4.19.91 github/fork/deepanshu1422/fix-typo-in-comment github/fork/haosdent/fix-typo linux-next v4.19.91 v4.19.90 v4.19.89 v4.19.88 v4.19.87 v4.19.86 v4.19.85 v4.19.84 v4.19.83 v4.19.82 v4.19.81 v4.19.80 v4.19.79 v4.19.78 v4.19.77 v4.19.76 v4.19.75 v4.19.74 v4.19.73 v4.19.72 v4.19.71 v4.19.70 v4.19.69 v4.19.68 v4.19.67 v4.19.66 v4.19.65 v4.19.64 v4.19.63 v4.19.62 v4.19.61 v4.19.60 v4.19.59 v4.19.58 v4.19.57 v4.19.56 v4.19.55 v4.19.54 v4.19.53 v4.19.52 v4.19.51 v4.19.50 v4.19.49 v4.19.48 v4.19.47 v4.19.46 v4.19.45 v4.19.44 v4.19.43 v4.19.42 v4.19.41 v4.19.40 v4.19.39 v4.19.38 v4.19.37 v4.19.36 v4.19.35 v4.19.34 v4.19.33 v4.19.32 v4.19.31 v4.19.30 v4.19.29 v4.19.28 v4.19.27 v4.19.26 v4.19.25 v4.19.24 v4.19.23 v4.19.22 v4.19.21 v4.19.20 v4.19.19 v4.19.18 v4.19.17 v4.19.16 v4.19.15 v4.19.14 v4.19.13 v4.19.12 v4.19.11 v4.19.10 v4.19.9 v4.19.8 v4.19.7 v4.19.6 v4.19.5 v4.19.4 v4.19.3 v4.19.2 v4.19.1 v4.19 v4.19-rc8 v4.19-rc7 v4.19-rc6 v4.19-rc5 v4.19-rc4 v4.19-rc3 v4.19-rc2 v4.19-rc1 ck-release-21 ck-release-20 ck-release-19.2 ck-release-19.1 ck-release-19 ck-release-18 ck-release-17.2 ck-release-17.1 ck-release-17 ck-release-16 ck-release-15.1 ck-release-15 ck-release-14 ck-release-13.2 ck-release-13 ck-release-12 ck-release-11 ck-release-10 ck-release-9 ck-release-7 alk-release-15 alk-release-14 alk-release-13.2 alk-release-13 alk-release-12 alk-release-11 alk-release-10 alk-release-9 alk-release-7
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......@@ -138,6 +138,80 @@ struct mlx5e_vport_stats {
#define NUM_VPORT_COUNTERS 31
};
static const char pport_strings[][ETH_GSTRING_LEN] = {
/* IEEE802.3 counters */
"frames_tx",
"frames_rx",
"check_seq_err",
"alignment_err",
"octets_tx",
"octets_received",
"multicast_xmitted",
"broadcast_xmitted",
"multicast_rx",
"broadcast_rx",
"in_range_len_errors",
"out_of_range_len",
"too_long_errors",
"symbol_err",
"mac_control_tx",
"mac_control_rx",
"unsupported_op_rx",
"pause_ctrl_rx",
"pause_ctrl_tx",
/* RFC2863 counters */
"in_octets",
"in_ucast_pkts",
"in_discards",
"in_errors",
"in_unknown_protos",
"out_octets",
"out_ucast_pkts",
"out_discards",
"out_errors",
"in_multicast_pkts",
"in_broadcast_pkts",
"out_multicast_pkts",
"out_broadcast_pkts",
/* RFC2819 counters */
"drop_events",
"octets",
"pkts",
"broadcast_pkts",
"multicast_pkts",
"crc_align_errors",
"undersize_pkts",
"oversize_pkts",
"fragments",
"jabbers",
"collisions",
"p64octets",
"p65to127octets",
"p128to255octets",
"p256to511octets",
"p512to1023octets",
"p1024to1518octets",
"p1519to2047octets",
"p2048to4095octets",
"p4096to8191octets",
"p8192to10239octets",
};
#define NUM_IEEE_802_3_COUNTERS 19
#define NUM_RFC_2863_COUNTERS 13
#define NUM_RFC_2819_COUNTERS 21
#define NUM_PPORT_COUNTERS (NUM_IEEE_802_3_COUNTERS + \
NUM_RFC_2863_COUNTERS + \
NUM_RFC_2819_COUNTERS)
struct mlx5e_pport_stats {
__be64 IEEE_802_3_counters[NUM_IEEE_802_3_COUNTERS];
__be64 RFC_2863_counters[NUM_RFC_2863_COUNTERS];
__be64 RFC_2819_counters[NUM_RFC_2819_COUNTERS];
};
static const char rq_stats_strings[][ETH_GSTRING_LEN] = {
"packets",
"csum_none",
......@@ -180,6 +254,7 @@ struct mlx5e_sq_stats {
struct mlx5e_stats {
struct mlx5e_vport_stats vport;
struct mlx5e_pport_stats pport;
};
struct mlx5e_params {
......@@ -217,6 +292,7 @@ struct mlx5e_cq {
struct napi_struct *napi;
struct mlx5_core_cq mcq;
struct mlx5e_channel *channel;
struct mlx5e_priv *priv;
/* control */
struct mlx5_wq_ctrl wq_ctrl;
......@@ -240,6 +316,7 @@ struct mlx5e_rq {
struct mlx5_wq_ctrl wq_ctrl;
u32 rqn;
struct mlx5e_channel *channel;
struct mlx5e_priv *priv;
} ____cacheline_aligned_in_smp;
struct mlx5e_tx_skb_cb {
......@@ -344,10 +421,10 @@ enum mlx5e_traffic_types {
MLX5E_NUM_TT,
};
enum {
MLX5E_RQT_SPREADING = 0,
MLX5E_RQT_DEFAULT_RQ = 1,
MLX5E_NUM_RQT = 2,
enum mlx5e_rqt_ix {
MLX5E_INDIRECTION_RQT,
MLX5E_SINGLE_RQ_RQT,
MLX5E_NUM_RQT,
};
struct mlx5e_eth_addr_info {
......@@ -372,10 +449,10 @@ struct mlx5e_eth_addr_db {
enum {
MLX5E_STATE_ASYNC_EVENTS_ENABLE,
MLX5E_STATE_OPENED,
MLX5E_STATE_DESTROYING,
};
struct mlx5e_vlan_db {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
u32 active_vlans_ft_ix[VLAN_N_VID];
u32 untagged_rule_ft_ix;
u32 any_vlan_rule_ft_ix;
......@@ -399,10 +476,11 @@ struct mlx5e_priv {
u32 pdn;
u32 tdn;
struct mlx5_core_mr mr;
struct mlx5e_rq drop_rq;
struct mlx5e_channel **channel;
u32 tisn[MLX5E_MAX_NUM_TC];
u32 rqtn;
u32 rqtn[MLX5E_NUM_RQT];
u32 tirn[MLX5E_NUM_TT];
struct mlx5e_flow_table ft;
......@@ -479,10 +557,9 @@ struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq);
void mlx5e_update_stats(struct mlx5e_priv *priv);
int mlx5e_open_flow_table(struct mlx5e_priv *priv);
void mlx5e_close_flow_table(struct mlx5e_priv *priv);
int mlx5e_create_flow_tables(struct mlx5e_priv *priv);
void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv);
void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
void mlx5e_set_rx_mode_core(struct mlx5e_priv *priv);
void mlx5e_set_rx_mode_work(struct work_struct *work);
int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
......@@ -491,8 +568,6 @@ int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
u16 vid);
void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);
void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);
int mlx5e_add_all_vlan_rules(struct mlx5e_priv *priv);
void mlx5e_del_all_vlan_rules(struct mlx5e_priv *priv);
int mlx5e_open_locked(struct net_device *netdev);
int mlx5e_close_locked(struct net_device *netdev);
......
......@@ -171,7 +171,7 @@ static int mlx5e_get_sset_count(struct net_device *dev, int sset)
switch (sset) {
case ETH_SS_STATS:
return NUM_VPORT_COUNTERS +
return NUM_VPORT_COUNTERS + NUM_PPORT_COUNTERS +
priv->params.num_channels * NUM_RQ_STATS +
priv->params.num_channels * priv->params.num_tc *
NUM_SQ_STATS;
......@@ -200,6 +200,11 @@ static void mlx5e_get_strings(struct net_device *dev,
strcpy(data + (idx++) * ETH_GSTRING_LEN,
vport_strings[i]);
/* PPORT counters */
for (i = 0; i < NUM_PPORT_COUNTERS; i++)
strcpy(data + (idx++) * ETH_GSTRING_LEN,
pport_strings[i]);
/* per channel counters */
for (i = 0; i < priv->params.num_channels; i++)
for (j = 0; j < NUM_RQ_STATS; j++)
......@@ -234,6 +239,9 @@ static void mlx5e_get_ethtool_stats(struct net_device *dev,
for (i = 0; i < NUM_VPORT_COUNTERS; i++)
data[idx++] = ((u64 *)&priv->stats.vport)[i];
for (i = 0; i < NUM_PPORT_COUNTERS; i++)
data[idx++] = be64_to_cpu(((__be64 *)&priv->stats.pport)[i]);
/* per channel counters */
for (i = 0; i < priv->params.num_channels; i++)
for (j = 0; j < NUM_RQ_STATS; j++)
......
......@@ -594,44 +594,28 @@ static void mlx5e_del_vlan_rule(struct mlx5e_priv *priv,
void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv)
{
WARN_ON(!mutex_is_locked(&priv->state_lock));
if (!priv->vlan.filter_disabled)
return;
if (priv->vlan.filter_disabled) {
priv->vlan.filter_disabled = false;
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID,
0);
}
priv->vlan.filter_disabled = false;
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID, 0);
}
void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv)
{
WARN_ON(!mutex_is_locked(&priv->state_lock));
if (priv->vlan.filter_disabled)
return;
if (!priv->vlan.filter_disabled) {
priv->vlan.filter_disabled = true;
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID,
0);
}
priv->vlan.filter_disabled = true;
mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID, 0);
}
int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
u16 vid)
{
struct mlx5e_priv *priv = netdev_priv(dev);
int err = 0;
mutex_lock(&priv->state_lock);
set_bit(vid, priv->vlan.active_vlans);
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID,
vid);
mutex_unlock(&priv->state_lock);
return err;
return mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID, vid);
}
int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
......@@ -639,56 +623,11 @@ int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
{
struct mlx5e_priv *priv = netdev_priv(dev);
mutex_lock(&priv->state_lock);
clear_bit(vid, priv->vlan.active_vlans);
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID, vid);
mutex_unlock(&priv->state_lock);
return 0;
}
int mlx5e_add_all_vlan_rules(struct mlx5e_priv *priv)
{
u16 vid;
int err;
for_each_set_bit(vid, priv->vlan.active_vlans, VLAN_N_VID) {
err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID,
vid);
if (err)
return err;
}
err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_UNTAGGED, 0);
if (err)
return err;
if (priv->vlan.filter_disabled) {
err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID,
0);
if (err)
return err;
}
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID, vid);
return 0;
}
void mlx5e_del_all_vlan_rules(struct mlx5e_priv *priv)
{
u16 vid;
if (priv->vlan.filter_disabled)
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_ANY_VID, 0);
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_UNTAGGED, 0);
for_each_set_bit(vid, priv->vlan.active_vlans, VLAN_N_VID)
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_MATCH_VID, vid);
}
#define mlx5e_for_each_hash_node(hn, tmp, hash, i) \
for (i = 0; i < MLX5E_ETH_ADDR_HASH_SIZE; i++) \
hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)
......@@ -752,18 +691,21 @@ static void mlx5e_handle_netdev_addr(struct mlx5e_priv *priv)
mlx5e_for_each_hash_node(hn, tmp, priv->eth_addr.netdev_mc, i)
hn->action = MLX5E_ACTION_DEL;
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
if (!test_bit(MLX5E_STATE_DESTROYING, &priv->state))
mlx5e_sync_netdev_addr(priv);
mlx5e_apply_netdev_addr(priv);
}
void mlx5e_set_rx_mode_core(struct mlx5e_priv *priv)
void mlx5e_set_rx_mode_work(struct work_struct *work)
{
struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
set_rx_mode_work);
struct mlx5e_eth_addr_db *ea = &priv->eth_addr;
struct net_device *ndev = priv->netdev;
bool rx_mode_enable = test_bit(MLX5E_STATE_OPENED, &priv->state);
bool rx_mode_enable = !test_bit(MLX5E_STATE_DESTROYING, &priv->state);
bool promisc_enabled = rx_mode_enable && (ndev->flags & IFF_PROMISC);
bool allmulti_enabled = rx_mode_enable && (ndev->flags & IFF_ALLMULTI);
bool broadcast_enabled = rx_mode_enable;
......@@ -796,17 +738,6 @@ void mlx5e_set_rx_mode_core(struct mlx5e_priv *priv)
ea->broadcast_enabled = broadcast_enabled;
}
void mlx5e_set_rx_mode_work(struct work_struct *work)
{
struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
set_rx_mode_work);
mutex_lock(&priv->state_lock);
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
mlx5e_set_rx_mode_core(priv);
mutex_unlock(&priv->state_lock);
}
void mlx5e_init_eth_addr(struct mlx5e_priv *priv)
{
ether_addr_copy(priv->eth_addr.broadcast.addr, priv->netdev->broadcast);
......@@ -929,7 +860,7 @@ static void mlx5e_destroy_vlan_flow_table(struct mlx5e_priv *priv)
mlx5_destroy_flow_table(priv->ft.vlan);
}
int mlx5e_open_flow_table(struct mlx5e_priv *priv)
int mlx5e_create_flow_tables(struct mlx5e_priv *priv)
{
int err;
......@@ -941,16 +872,24 @@ int mlx5e_open_flow_table(struct mlx5e_priv *priv)
if (err)
goto err_destroy_main_flow_table;
err = mlx5e_add_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_UNTAGGED, 0);
if (err)
goto err_destroy_vlan_flow_table;
return 0;
err_destroy_vlan_flow_table:
mlx5e_destroy_vlan_flow_table(priv);
err_destroy_main_flow_table:
mlx5e_destroy_main_flow_table(priv);
return err;
}
void mlx5e_close_flow_table(struct mlx5e_priv *priv)
void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv)
{
mlx5e_del_vlan_rule(priv, MLX5E_VLAN_RULE_TYPE_UNTAGGED, 0);
mlx5e_destroy_vlan_flow_table(priv);
mlx5e_destroy_main_flow_table(priv);
}
......@@ -163,6 +163,18 @@ int mlx5_core_create_tir(struct mlx5_core_dev *dev, u32 *in, int inlen,
return err;
}
int mlx5_core_modify_tir(struct mlx5_core_dev *dev, u32 tirn, u32 *in,
int inlen)
{
u32 out[MLX5_ST_SZ_DW(modify_tir_out)];
MLX5_SET(modify_tir_in, in, tirn, tirn);
MLX5_SET(modify_tir_in, in, opcode, MLX5_CMD_OP_MODIFY_TIR);
memset(out, 0, sizeof(out));
return mlx5_cmd_exec_check_status(dev, in, inlen, out, sizeof(out));
}
void mlx5_core_destroy_tir(struct mlx5_core_dev *dev, u32 tirn)
{
u32 in[MLX5_ST_SZ_DW(destroy_tir_out)];
......@@ -375,6 +387,18 @@ int mlx5_core_create_rqt(struct mlx5_core_dev *dev, u32 *in, int inlen,
return err;
}
int mlx5_core_modify_rqt(struct mlx5_core_dev *dev, u32 rqtn, u32 *in,
int inlen)
{
u32 out[MLX5_ST_SZ_DW(modify_rqt_out)];
MLX5_SET(modify_rqt_in, in, rqtn, rqtn);
MLX5_SET(modify_rqt_in, in, opcode, MLX5_CMD_OP_MODIFY_RQT);
memset(out, 0, sizeof(out));
return mlx5_cmd_exec_check_status(dev, in, inlen, out, sizeof(out));
}
void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn)
{
u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)];
......
......@@ -45,6 +45,8 @@ int mlx5_core_modify_sq(struct mlx5_core_dev *dev, u32 sqn, u32 *in, int inlen);
void mlx5_core_destroy_sq(struct mlx5_core_dev *dev, u32 sqn);
int mlx5_core_create_tir(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *tirn);
int mlx5_core_modify_tir(struct mlx5_core_dev *dev, u32 tirn, u32 *in,
int inlen);
void mlx5_core_destroy_tir(struct mlx5_core_dev *dev, u32 tirn);
int mlx5_core_create_tis(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *tisn);
......@@ -63,6 +65,8 @@ int mlx5_core_arm_xsrq(struct mlx5_core_dev *dev, u32 rmpn, u16 lwm);
int mlx5_core_create_rqt(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *rqtn);
int mlx5_core_modify_rqt(struct mlx5_core_dev *dev, u32 rqtn, u32 *in,
int inlen);
void mlx5_core_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn);
#endif /* __TRANSOBJ_H__ */
......@@ -1182,6 +1182,16 @@ enum {
MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR = 0x40,
};
enum {
MLX5_IEEE_802_3_COUNTERS_GROUP = 0x0,
MLX5_RFC_2863_COUNTERS_GROUP = 0x1,
MLX5_RFC_2819_COUNTERS_GROUP = 0x2,
MLX5_RFC_3635_COUNTERS_GROUP = 0x3,
MLX5_ETHERNET_EXTENDED_COUNTERS_GROUP = 0x5,
MLX5_PER_PRIORITY_COUNTERS_GROUP = 0x10,
MLX5_PER_TRAFFIC_CLASS_COUNTERS_GROUP = 0x11
};
static inline u16 mlx5_to_sw_pkey_sz(int pkey_sz)
{
if (pkey_sz > MLX5_MAX_LOG_PKEY_TABLE)
......
......@@ -103,6 +103,7 @@ enum {
MLX5_REG_PMTU = 0x5003,
MLX5_REG_PTYS = 0x5004,
MLX5_REG_PAOS = 0x5006,
MLX5_REG_PPCNT = 0x5008,
MLX5_REG_PMAOS = 0x5012,
MLX5_REG_PUDE = 0x5009,
MLX5_REG_PMPE = 0x5010,
......
......@@ -4050,6 +4050,13 @@ struct mlx5_ifc_modify_tis_in_bits {
struct mlx5_ifc_tisc_bits ctx;
};
struct mlx5_ifc_modify_tir_bitmask_bits {
u8 reserved[0x20];
u8 reserved1[0x1f];
u8 lro[0x1];
};
struct mlx5_ifc_modify_tir_out_bits {
u8 status[0x8];
u8 reserved_0[0x18];
......@@ -4071,7 +4078,7 @@ struct mlx5_ifc_modify_tir_in_bits {
u8 reserved_3[0x20];
u8 modify_bitmask[0x40];
struct mlx5_ifc_modify_tir_bitmask_bits bitmask;
u8 reserved_4[0x40];
......@@ -4116,6 +4123,13 @@ struct mlx5_ifc_modify_rqt_out_bits {
u8 reserved_1[0x40];
};
struct mlx5_ifc_rqt_bitmask_bits {
u8 reserved[0x20];
u8 reserved1[0x1f];
u8 rqn_list[0x1];
};
struct mlx5_ifc_modify_rqt_in_bits {
u8 opcode[0x10];
u8 reserved_0[0x10];
......@@ -4128,7 +4142,7 @@ struct mlx5_ifc_modify_rqt_in_bits {
u8 reserved_3[0x20];
u8 modify_bitmask[0x40];
struct mlx5_ifc_rqt_bitmask_bits bitmask;
u8 reserved_4[0x40];
......
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