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authorEyal Perry <eyalpe@mellanox.com>2014-12-02 19:12:10 +0300
committerDavid S. Miller <davem@davemloft.net>2014-12-09 05:07:10 +0300
commit892311f66f2411b813ca631009356891a0c2b0a1 (patch)
tree42267098964290cf349abd6733267c24867f2318 /drivers
parent18b5427ae1654803930b97590ac5a85245861646 (diff)
downloadlinux-892311f66f2411b813ca631009356891a0c2b0a1.tar.xz
ethtool: Support for configurable RSS hash function
This patch extends the set/get_rxfh ethtool-options for getting or setting the RSS hash function. It modifies drivers implementation of set/get_rxfh accordingly. This change also delegates the responsibility of checking whether a modification to a certain RX flow hash parameter is supported to the driver implementation of set_rxfh. User-kernel API is done through the new hfunc bitmask field in the ethtool_rxfh struct. A bit set in the hfunc field is corresponding to an index in the new string-set ETH_SS_RSS_HASH_FUNCS. Got approval from most of the relevant driver maintainers that their driver is using Toeplitz, and for the few that didn't answered, also assumed it is Toeplitz. Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Ariel Elior <ariel.elior@qlogic.com> Cc: Prashant Sreedharan <prashant@broadcom.com> Cc: Michael Chan <mchan@broadcom.com> Cc: Hariprasad S <hariprasad@chelsio.com> Cc: Sathya Perla <sathya.perla@emulex.com> Cc: Subbu Seetharaman <subbu.seetharaman@emulex.com> Cc: Ajit Khaparde <ajit.khaparde@emulex.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Bruce Allan <bruce.w.allan@intel.com> Cc: Carolyn Wyborny <carolyn.wyborny@intel.com> Cc: Don Skidmore <donald.c.skidmore@intel.com> Cc: Greg Rose <gregory.v.rose@intel.com> Cc: Matthew Vick <matthew.vick@intel.com> Cc: John Ronciak <john.ronciak@intel.com> Cc: Mitch Williams <mitch.a.williams@intel.com> Cc: Amir Vadai <amirv@mellanox.com> Cc: Solarflare linux maintainers <linux-net-drivers@solarflare.com> Cc: Shradha Shah <sshah@solarflare.com> Cc: Shreyas Bhatewara <sbhatewara@vmware.com> Cc: "VMware, Inc." <pv-drivers@vmware.com> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Eyal Perry <eyalpe@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c11
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c20
-rw-r--r--drivers/net/ethernet/broadcom/tg3.c20
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c18
-rw-r--r--drivers/net/ethernet/emulex/benet/be_ethtool.c12
-rw-r--r--drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c12
-rw-r--r--drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c17
-rw-r--r--drivers/net/ethernet/intel/igb/igb_ethtool.c16
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_ethtool.c13
-rw-r--r--drivers/net/ethernet/sfc/ethtool.c18
-rw-r--r--drivers/net/vmxnet3/vmxnet3_ethtool.c15
11 files changed, 148 insertions, 24 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
index 95d44538357f..ebf489351555 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
@@ -511,7 +511,8 @@ static u32 xgbe_get_rxfh_indir_size(struct net_device *netdev)
return ARRAY_SIZE(pdata->rss_table);
}
-static int xgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
+static int xgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct xgbe_prv_data *pdata = netdev_priv(netdev);
unsigned int i;
@@ -525,16 +526,22 @@ static int xgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
if (key)
memcpy(key, pdata->rss_key, sizeof(pdata->rss_key));
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+
return 0;
}
static int xgbe_set_rxfh(struct net_device *netdev, const u32 *indir,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct xgbe_prv_data *pdata = netdev_priv(netdev);
struct xgbe_hw_if *hw_if = &pdata->hw_if;
unsigned int ret;
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+ return -EOPNOTSUPP;
+
if (indir) {
ret = hw_if->set_rss_lookup_table(pdata, indir);
if (ret)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index 1edc931b1458..ffe4e003e636 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -3358,12 +3358,18 @@ static u32 bnx2x_get_rxfh_indir_size(struct net_device *dev)
return T_ETH_INDIRECTION_TABLE_SIZE;
}
-static int bnx2x_get_rxfh(struct net_device *dev, u32 *indir, u8 *key)
+static int bnx2x_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct bnx2x *bp = netdev_priv(dev);
u8 ind_table[T_ETH_INDIRECTION_TABLE_SIZE] = {0};
size_t i;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!indir)
+ return 0;
+
/* Get the current configuration of the RSS indirection table */
bnx2x_get_rss_ind_table(&bp->rss_conf_obj, ind_table);
@@ -3383,11 +3389,21 @@ static int bnx2x_get_rxfh(struct net_device *dev, u32 *indir, u8 *key)
}
static int bnx2x_set_rxfh(struct net_device *dev, const u32 *indir,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct bnx2x *bp = netdev_priv(dev);
size_t i;
+ /* We require at least one supported parameter to be changed and no
+ * change in any of the unsupported parameters
+ */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+
+ if (!indir)
+ return 0;
+
for (i = 0; i < T_ETH_INDIRECTION_TABLE_SIZE; i++) {
/*
* The same as in bnx2x_get_rxfh: we can't use a memcpy()
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 43fd1b72c1ea..bb48a610b72a 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -12561,22 +12561,38 @@ static u32 tg3_get_rxfh_indir_size(struct net_device *dev)
return size;
}
-static int tg3_get_rxfh(struct net_device *dev, u32 *indir, u8 *key)
+static int tg3_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, u8 *hfunc)
{
struct tg3 *tp = netdev_priv(dev);
int i;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!indir)
+ return 0;
+
for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i++)
indir[i] = tp->rss_ind_tbl[i];
return 0;
}
-static int tg3_set_rxfh(struct net_device *dev, const u32 *indir, const u8 *key)
+static int tg3_set_rxfh(struct net_device *dev, const u32 *indir, const u8 *key,
+ const u8 hfunc)
{
struct tg3 *tp = netdev_priv(dev);
size_t i;
+ /* We require at least one supported parameter to be changed and no
+ * change in any of the unsupported parameters
+ */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+
+ if (!indir)
+ return 0;
+
for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i++)
tp->rss_ind_tbl[i] = indir[i];
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 3aea82bb9039..e7342bc85026 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -2923,21 +2923,35 @@ static u32 get_rss_table_size(struct net_device *dev)
return pi->rss_size;
}
-static int get_rss_table(struct net_device *dev, u32 *p, u8 *key)
+static int get_rss_table(struct net_device *dev, u32 *p, u8 *key, u8 *hfunc)
{
const struct port_info *pi = netdev_priv(dev);
unsigned int n = pi->rss_size;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!p)
+ return 0;
while (n--)
p[n] = pi->rss[n];
return 0;
}
-static int set_rss_table(struct net_device *dev, const u32 *p, const u8 *key)
+static int set_rss_table(struct net_device *dev, const u32 *p, const u8 *key,
+ const u8 hfunc)
{
unsigned int i;
struct port_info *pi = netdev_priv(dev);
+ /* We require at least one supported parameter to be changed and no
+ * change in any of the unsupported parameters
+ */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+ if (!p)
+ return 0;
+
for (i = 0; i < pi->rss_size; i++)
pi->rss[i] = p[i];
if (pi->adapter->flags & FULL_INIT_DONE)
diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c
index e42a791c1835..73a500ccbf69 100644
--- a/drivers/net/ethernet/emulex/benet/be_ethtool.c
+++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c
@@ -1171,7 +1171,8 @@ static u32 be_get_rxfh_key_size(struct net_device *netdev)
return RSS_HASH_KEY_LEN;
}
-static int be_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey)
+static int be_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey,
+ u8 *hfunc)
{
struct be_adapter *adapter = netdev_priv(netdev);
int i;
@@ -1185,16 +1186,23 @@ static int be_get_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey)
if (hkey)
memcpy(hkey, rss->rss_hkey, RSS_HASH_KEY_LEN);
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+
return 0;
}
static int be_set_rxfh(struct net_device *netdev, const u32 *indir,
- const u8 *hkey)
+ const u8 *hkey, const u8 hfunc)
{
int rc = 0, i, j;
struct be_adapter *adapter = netdev_priv(netdev);
u8 rsstable[RSS_INDIR_TABLE_LEN];
+ /* We do not allow change in unsupported parameters */
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+ return -EOPNOTSUPP;
+
if (indir) {
struct be_rx_obj *rxo;
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
index 2d04464e6aa3..651f53bc7376 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c
@@ -916,11 +916,15 @@ static u32 fm10k_get_rssrk_size(struct net_device *netdev)
return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
}
-static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key)
+static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct fm10k_intfc *interface = netdev_priv(netdev);
int i, err;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+
err = fm10k_get_reta(netdev, indir);
if (err || !key)
return err;
@@ -932,12 +936,16 @@ static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key)
}
static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct fm10k_intfc *interface = netdev_priv(netdev);
struct fm10k_hw *hw = &interface->hw;
int i, err;
+ /* We do not allow change in unsupported parameters */
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+ return -EOPNOTSUPP;
+
err = fm10k_set_reta(netdev, indir);
if (err || !key)
return err;
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
index 69a269b23be6..69b97bac182c 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c
@@ -627,13 +627,19 @@ static u32 i40evf_get_rxfh_indir_size(struct net_device *netdev)
*
* Reads the indirection table directly from the hardware. Always returns 0.
**/
-static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
+static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct i40evf_adapter *adapter = netdev_priv(netdev);
struct i40e_hw *hw = &adapter->hw;
u32 hlut_val;
int i, j;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!indir)
+ return 0;
+
for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) {
hlut_val = rd32(hw, I40E_VFQF_HLUT(i));
indir[j++] = hlut_val & 0xff;
@@ -654,13 +660,20 @@ static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
* returns 0 after programming the table.
**/
static int i40evf_set_rxfh(struct net_device *netdev, const u32 *indir,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct i40evf_adapter *adapter = netdev_priv(netdev);
struct i40e_hw *hw = &adapter->hw;
u32 hlut_val;
int i, j;
+ /* We do not allow change in unsupported parameters */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+ if (!indir)
+ return 0;
+
for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) {
hlut_val = indir[j++];
hlut_val |= indir[j++] << 8;
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
index 02cfd3b14762..d5673eb90c54 100644
--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
+++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
@@ -2842,11 +2842,16 @@ static u32 igb_get_rxfh_indir_size(struct net_device *netdev)
return IGB_RETA_SIZE;
}
-static int igb_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key)
+static int igb_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct igb_adapter *adapter = netdev_priv(netdev);
int i;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!indir)
+ return 0;
for (i = 0; i < IGB_RETA_SIZE; i++)
indir[i] = adapter->rss_indir_tbl[i];
@@ -2889,13 +2894,20 @@ void igb_write_rss_indir_tbl(struct igb_adapter *adapter)
}
static int igb_set_rxfh(struct net_device *netdev, const u32 *indir,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct igb_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
int i;
u32 num_queues;
+ /* We do not allow change in unsupported parameters */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+ if (!indir)
+ return 0;
+
num_queues = adapter->rss_queues;
switch (hw->mac.type) {
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index c45e06abc073..28c3fc5a0791 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -978,7 +978,8 @@ static u32 mlx4_en_get_rxfh_key_size(struct net_device *netdev)
return MLX4_EN_RSS_KEY_SIZE;
}
-static int mlx4_en_get_rxfh(struct net_device *dev, u32 *ring_index, u8 *key)
+static int mlx4_en_get_rxfh(struct net_device *dev, u32 *ring_index, u8 *key,
+ u8 *hfunc)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_rss_map *rss_map = &priv->rss_map;
@@ -990,16 +991,20 @@ static int mlx4_en_get_rxfh(struct net_device *dev, u32 *ring_index, u8 *key)
rss_rings = 1 << ilog2(rss_rings);
while (n--) {
+ if (!ring_index)
+ break;
ring_index[n] = rss_map->qps[n % rss_rings].qpn -
rss_map->base_qpn;
}
if (key)
memcpy(key, priv->rss_key, MLX4_EN_RSS_KEY_SIZE);
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
return err;
}
static int mlx4_en_set_rxfh(struct net_device *dev, const u32 *ring_index,
- const u8 *key)
+ const u8 *key, const u8 hfunc)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
@@ -1008,6 +1013,10 @@ static int mlx4_en_set_rxfh(struct net_device *dev, const u32 *ring_index,
int i;
int rss_rings = 0;
+ /* We do not allow change in unsupported parameters */
+ if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
+ return -EOPNOTSUPP;
+
/* Calculate RSS table size and make sure flows are spread evenly
* between rings
*/
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index cad258a78708..4835bc0d0de8 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -1086,19 +1086,29 @@ static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
0 : ARRAY_SIZE(efx->rx_indir_table));
}
-static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key)
+static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,
+ u8 *hfunc)
{
struct efx_nic *efx = netdev_priv(net_dev);
- memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (indir)
+ memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
return 0;
}
-static int efx_ethtool_set_rxfh(struct net_device *net_dev,
- const u32 *indir, const u8 *key)
+static int efx_ethtool_set_rxfh(struct net_device *net_dev, const u32 *indir,
+ const u8 *key, const u8 hfunc)
{
struct efx_nic *efx = netdev_priv(net_dev);
+ /* We do not allow change in unsupported parameters */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+ if (!indir)
+ return 0;
memcpy(efx->rx_indir_table, indir, sizeof(efx->rx_indir_table));
efx->type->rx_push_rss_config(efx);
return 0;
diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index b725fd9e7803..b7b53329d575 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -583,12 +583,16 @@ vmxnet3_get_rss_indir_size(struct net_device *netdev)
}
static int
-vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key)
+vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key, u8 *hfunc)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct UPT1_RSSConf *rssConf = adapter->rss_conf;
unsigned int n = rssConf->indTableSize;
+ if (hfunc)
+ *hfunc = ETH_RSS_HASH_TOP;
+ if (!p)
+ return 0;
while (n--)
p[n] = rssConf->indTable[n];
return 0;
@@ -596,13 +600,20 @@ vmxnet3_get_rss(struct net_device *netdev, u32 *p, u8 *key)
}
static int
-vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key)
+vmxnet3_set_rss(struct net_device *netdev, const u32 *p, const u8 *key,
+ const u8 hfunc)
{
unsigned int i;
unsigned long flags;
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct UPT1_RSSConf *rssConf = adapter->rss_conf;
+ /* We do not allow change in unsupported parameters */
+ if (key ||
+ (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+ return -EOPNOTSUPP;
+ if (!p)
+ return 0;
for (i = 0; i < rssConf->indTableSize; i++)
rssConf->indTable[i] = p[i];