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net: ethtool: get rid of get/set_rxfh_context functions

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Add the RSS context parameters to struct ethtool_rxfh_param and use the
get/set_rxfh to handle the RSS contexts as well.

This is part 2/2 of the fix suggested in [1]:

 - Add a rss_context member to the argument struct and a capability
   like cap_link_lanes_supported to indicate whether driver supports
   rss contexts, then you can remove *et_rxfh_context functions,
   and instead call *et_rxfh() with a non-zero rss_context.

Link: https://lore.kernel.org/netdev/20231121152906.2dd5f487@kernel.org/ [1]
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Tony Nguyen <anthony.l.nguyen@intel.com>
CC: Marcin Wojtas <mw@semihalf.com>
CC: Russell King <linux@armlinux.org.uk>
CC: Sunil Goutham <sgoutham@marvell.com>
CC: Geetha sowjanya <gakula@marvell.com>
CC: Subbaraya Sundeep <sbhatta@marvell.com>
CC: hariprasad <hkelam@marvell.com>
CC: Saeed Mahameed <saeedm@nvidia.com>
CC: Leon Romanovsky <leon@kernel.org>
CC: Edward Cree <ecree.xilinx@gmail.com>
CC: Martin Habets <habetsm.xilinx@gmail.com>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://lore.kernel.org/r/20231213003321.605376-3-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ahmed Zaki 2023-12-12 17:33:15 -07:00 committed by Jakub Kicinski
parent fb6e30a725
commit dcd8dbf9e7
14 changed files with 205 additions and 300 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/ethernet/intel/ice/ice_ethtool.c
View File

@ -3195,11 +3195,18 @@ static u32 ice_get_rxfh_indir_size(struct net_device *netdev)
return np->vsi->rss_table_size;
}
/**
* ice_get_rxfh - get the Rx flow hash indirection table
* @netdev: network interface device structure
* @rxfh: pointer to param struct (indir, key, hfunc)
*
* Reads the indirection table directly from the hardware.
*/
static int
ice_get_rxfh_context(struct net_device *netdev,
struct ethtool_rxfh_param *rxfh, u32 rss_context)
ice_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
u32 rss_context = rxfh->rss_context;
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u16 qcount, offset;
@ -3261,19 +3268,6 @@ ice_get_rxfh_context(struct net_device *netdev,
return err;
}
/**
* ice_get_rxfh - get the Rx flow hash indirection table
* @netdev: network interface device structure
* @rxfh: pointer to param struct (indir, key, hfunc)
*
* Reads the indirection table directly from the hardware.
*/
static int
ice_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{
return ice_get_rxfh_context(netdev, rxfh, 0);
}
/**
* ice_set_rxfh - set the Rx flow hash indirection table
* @netdev: network interface device structure
@ -3298,6 +3292,9 @@ ice_set_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh,
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (rxfh->rss_context)
return -EOPNOTSUPP;
if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
/* RSS not supported return error here */
netdev_warn(netdev, "RSS is not configured on this VSI!\n");
@ -4215,6 +4212,7 @@ ice_get_module_eeprom(struct net_device *netdev,
}
static const struct ethtool_ops ice_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_USE_ADAPTIVE |
ETHTOOL_COALESCE_RX_USECS_HIGH,
@ -4248,7 +4246,6 @@ static const struct ethtool_ops ice_ethtool_ops = {
.set_pauseparam = ice_set_pauseparam,
.get_rxfh_key_size = ice_get_rxfh_key_size,
.get_rxfh_indir_size = ice_get_rxfh_indir_size,
.get_rxfh_context = ice_get_rxfh_context,
.get_rxfh = ice_get_rxfh,
.set_rxfh = ice_set_rxfh,
.get_channels = ice_get_channels,

63
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
View File

@ -5638,47 +5638,7 @@ static int mvpp2_ethtool_get_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh)
{
struct mvpp2_port *port = netdev_priv(dev);
int ret = 0;
if (!mvpp22_rss_is_supported(port))
return -EOPNOTSUPP;
if (rxfh->indir)
ret = mvpp22_port_rss_ctx_indir_get(port, 0, rxfh->indir);
rxfh->hfunc = ETH_RSS_HASH_CRC32;
return ret;
}
static int mvpp2_ethtool_set_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct mvpp2_port *port = netdev_priv(dev);
int ret = 0;
if (!mvpp22_rss_is_supported(port))
return -EOPNOTSUPP;
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_CRC32)
return -EOPNOTSUPP;
if (rxfh->key)
return -EOPNOTSUPP;
if (rxfh->indir)
ret = mvpp22_port_rss_ctx_indir_set(port, 0, rxfh->indir);
return ret;
}
static int mvpp2_ethtool_get_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context)
{
struct mvpp2_port *port = netdev_priv(dev);
u32 rss_context = rxfh->rss_context;
int ret = 0;
if (!mvpp22_rss_is_supported(port))
@ -5695,12 +5655,13 @@ static int mvpp2_ethtool_get_rxfh_context(struct net_device *dev,
return ret;
}
static int mvpp2_ethtool_set_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete)
static int mvpp2_ethtool_set_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct mvpp2_port *port = netdev_priv(dev);
int ret;
u32 *rss_context = &rxfh->rss_context;
int ret = 0;
if (!mvpp22_rss_is_supported(port))
return -EOPNOTSUPP;
@ -5712,7 +5673,7 @@ static int mvpp2_ethtool_set_rxfh_context(struct net_device *dev,
if (rxfh->key)
return -EOPNOTSUPP;
if (delete)
if (*rss_context && rxfh->rss_delete)
return mvpp22_port_rss_ctx_delete(port, *rss_context);
if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
@ -5721,8 +5682,13 @@ static int mvpp2_ethtool_set_rxfh_context(struct net_device *dev,
return ret;
}
return mvpp22_port_rss_ctx_indir_set(port, *rss_context, rxfh->indir);
if (rxfh->indir)
ret = mvpp22_port_rss_ctx_indir_set(port, *rss_context,
rxfh->indir);
return ret;
}
/* Device ops */
static const struct net_device_ops mvpp2_netdev_ops = {
@ -5742,6 +5708,7 @@ static const struct net_device_ops mvpp2_netdev_ops = {
};
static const struct ethtool_ops mvpp2_eth_tool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES,
.nway_reset = mvpp2_ethtool_nway_reset,
@ -5764,8 +5731,6 @@ static const struct ethtool_ops mvpp2_eth_tool_ops = {
.get_rxfh_indir_size = mvpp2_ethtool_get_rxfh_indir_size,
.get_rxfh = mvpp2_ethtool_get_rxfh,
.set_rxfh = mvpp2_ethtool_set_rxfh,
.get_rxfh_context = mvpp2_ethtool_get_rxfh_context,
.set_rxfh_context = mvpp2_ethtool_set_rxfh_context,
};
/* Used for PPv2.1, or PPv2.2 with the old Device Tree binding that

63
drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
View File

@ -835,11 +835,12 @@ static int otx2_rss_ctx_create(struct otx2_nic *pfvf,
return 0;
}
/* RSS context configuration */
static int otx2_set_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete)
/* Configure RSS table and hash key */
static int otx2_set_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
u32 rss_context = DEFAULT_RSS_CONTEXT_GROUP;
struct otx2_nic *pfvf = netdev_priv(dev);
struct otx2_rss_ctx *rss_ctx;
struct otx2_rss_info *rss;
@ -849,8 +850,11 @@ static int otx2_set_rxfh_context(struct net_device *dev,
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (*rss_context != ETH_RXFH_CONTEXT_ALLOC &&
*rss_context >= MAX_RSS_GROUPS)
if (rxfh->rss_context)
rss_context = rxfh->rss_context;
if (rss_context != ETH_RXFH_CONTEXT_ALLOC &&
rss_context >= MAX_RSS_GROUPS)
return -EINVAL;
rss = &pfvf->hw.rss_info;
@ -864,28 +868,30 @@ static int otx2_set_rxfh_context(struct net_device *dev,
memcpy(rss->key, rxfh->key, sizeof(rss->key));
otx2_set_rss_key(pfvf);
}
if (delete)
return otx2_rss_ctx_delete(pfvf, *rss_context);
if (rxfh->rss_delete)
return otx2_rss_ctx_delete(pfvf, rss_context);
if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
ret = otx2_rss_ctx_create(pfvf, rss_context);
if (rss_context == ETH_RXFH_CONTEXT_ALLOC) {
ret = otx2_rss_ctx_create(pfvf, &rss_context);
rxfh->rss_context = rss_context;
if (ret)
return ret;
}
if (rxfh->indir) {
rss_ctx = rss->rss_ctx[*rss_context];
rss_ctx = rss->rss_ctx[rss_context];
for (idx = 0; idx < rss->rss_size; idx++)
rss_ctx->ind_tbl[idx] = rxfh->indir[idx];
}
otx2_set_rss_table(pfvf, *rss_context);
otx2_set_rss_table(pfvf, rss_context);
return 0;
}
static int otx2_get_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context)
/* Get RSS configuration */
static int otx2_get_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh)
{
u32 rss_context = DEFAULT_RSS_CONTEXT_GROUP;
struct otx2_nic *pfvf = netdev_priv(dev);
struct otx2_rss_ctx *rss_ctx;
struct otx2_rss_info *rss;
@ -895,6 +901,8 @@ static int otx2_get_rxfh_context(struct net_device *dev,
rss = &pfvf->hw.rss_info;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->rss_context)
rss_context = rxfh->rss_context;
if (!indir)
return 0;
@ -922,25 +930,6 @@ static int otx2_get_rxfh_context(struct net_device *dev,
return 0;
}
/* Get RSS configuration */
static int otx2_get_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh)
{
return otx2_get_rxfh_context(dev, rxfh,
DEFAULT_RSS_CONTEXT_GROUP);
}
/* Configure RSS table and hash key */
static int otx2_set_rxfh(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
u32 rss_context = DEFAULT_RSS_CONTEXT_GROUP;
return otx2_set_rxfh_context(dev, rxfh, &rss_context, 0);
}
static u32 otx2_get_msglevel(struct net_device *netdev)
{
struct otx2_nic *pfvf = netdev_priv(netdev);
@ -1321,6 +1310,7 @@ static void otx2_get_fec_stats(struct net_device *netdev,
}
static const struct ethtool_ops otx2_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
ETHTOOL_COALESCE_USE_ADAPTIVE,
@ -1343,8 +1333,6 @@ static const struct ethtool_ops otx2_ethtool_ops = {
.get_rxfh_indir_size = otx2_get_rxfh_indir_size,
.get_rxfh = otx2_get_rxfh,
.set_rxfh = otx2_set_rxfh,
.get_rxfh_context = otx2_get_rxfh_context,
.set_rxfh_context = otx2_set_rxfh_context,
.get_msglevel = otx2_get_msglevel,
.set_msglevel = otx2_set_msglevel,
.get_pauseparam = otx2_get_pauseparam,
@ -1444,6 +1432,7 @@ static int otx2vf_get_link_ksettings(struct net_device *netdev,
}
static const struct ethtool_ops otx2vf_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
ETHTOOL_COALESCE_USE_ADAPTIVE,
@ -1462,8 +1451,6 @@ static const struct ethtool_ops otx2vf_ethtool_ops = {
.get_rxfh_indir_size = otx2_get_rxfh_indir_size,
.get_rxfh = otx2_get_rxfh,
.set_rxfh = otx2_set_rxfh,
.get_rxfh_context = otx2_get_rxfh_context,
.set_rxfh_context = otx2_set_rxfh_context,
.get_ringparam = otx2_get_ringparam,
.set_ringparam = otx2_set_ringparam,
.get_coalesce = otx2_get_coalesce,

37
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -1262,11 +1262,10 @@ static u32 mlx5e_get_rxfh_indir_size(struct net_device *netdev)
return mlx5e_ethtool_get_rxfh_indir_size(priv);
}
static int mlx5e_get_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context)
int mlx5e_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5e_priv *priv = netdev_priv(netdev);
u32 rss_context = rxfh->rss_context;
int err;
mutex_lock(&priv->state_lock);
@ -1276,16 +1275,16 @@ static int mlx5e_get_rxfh_context(struct net_device *dev,
return err;
}
static int mlx5e_set_rxfh_context(struct net_device *dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete)
int mlx5e_set_rxfh(struct net_device *dev, struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct mlx5e_priv *priv = netdev_priv(dev);
u32 *rss_context = &rxfh->rss_context;
u8 hfunc = rxfh->hfunc;
int err;
mutex_lock(&priv->state_lock);
if (delete) {
if (*rss_context && rxfh->rss_delete) {
err = mlx5e_rx_res_rss_destroy(priv->rx_res, *rss_context);
goto unlock;
}
@ -1307,25 +1306,6 @@ static int mlx5e_set_rxfh_context(struct net_device *dev,
return err;
}
int mlx5e_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{
return mlx5e_get_rxfh_context(netdev, rxfh, 0);
}
int mlx5e_set_rxfh(struct net_device *dev, struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct mlx5e_priv *priv = netdev_priv(dev);
u8 hfunc = rxfh->hfunc;
int err;
mutex_lock(&priv->state_lock);
err = mlx5e_rx_res_rss_set_rxfh(priv->rx_res, 0, rxfh->indir, rxfh->key,
hfunc == ETH_RSS_HASH_NO_CHANGE ? NULL : &hfunc);
mutex_unlock(&priv->state_lock);
return err;
}
#define MLX5E_PFC_PREVEN_AUTO_TOUT_MSEC 100
#define MLX5E_PFC_PREVEN_TOUT_MAX_MSEC 8000
#define MLX5E_PFC_PREVEN_MINOR_PRECENT 85
@ -2402,6 +2382,7 @@ static void mlx5e_get_rmon_stats(struct net_device *netdev,
}
const struct ethtool_ops mlx5e_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
ETHTOOL_COALESCE_USE_ADAPTIVE |
@ -2424,8 +2405,6 @@ const struct ethtool_ops mlx5e_ethtool_ops = {
.get_rxfh_indir_size = mlx5e_get_rxfh_indir_size,
.get_rxfh = mlx5e_get_rxfh,
.set_rxfh = mlx5e_set_rxfh,
.get_rxfh_context = mlx5e_get_rxfh_context,
.set_rxfh_context = mlx5e_set_rxfh_context,
.get_rxnfc = mlx5e_get_rxnfc,
.set_rxnfc = mlx5e_set_rxnfc,
.get_tunable = mlx5e_get_tunable,

3
drivers/net/ethernet/sfc/ef100_ethtool.c
View File

@ -37,6 +37,7 @@ ef100_ethtool_get_ringparam(struct net_device *net_dev,
/* Ethtool options available
*/
const struct ethtool_ops ef100_ethtool_ops = {
.cap_rss_ctx_supported = true,
.get_drvinfo = efx_ethtool_get_drvinfo,
.get_msglevel = efx_ethtool_get_msglevel,
.set_msglevel = efx_ethtool_set_msglevel,
@ -60,8 +61,6 @@ const struct ethtool_ops ef100_ethtool_ops = {
.get_rxfh_key_size = efx_ethtool_get_rxfh_key_size,
.get_rxfh = efx_ethtool_get_rxfh,
.set_rxfh = efx_ethtool_set_rxfh,
.get_rxfh_context = efx_ethtool_get_rxfh_context,
.set_rxfh_context = efx_ethtool_set_rxfh_context,
.get_module_info = efx_ethtool_get_module_info,
.get_module_eeprom = efx_ethtool_get_module_eeprom,

3
drivers/net/ethernet/sfc/ethtool.c
View File

@ -240,6 +240,7 @@ static int efx_ethtool_get_ts_info(struct net_device *net_dev,
}
const struct ethtool_ops efx_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_USECS_IRQ |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
@ -269,8 +270,6 @@ const struct ethtool_ops efx_ethtool_ops = {
.get_rxfh_key_size = efx_ethtool_get_rxfh_key_size,
.get_rxfh = efx_ethtool_get_rxfh,
.set_rxfh = efx_ethtool_set_rxfh,
.get_rxfh_context = efx_ethtool_get_rxfh_context,
.set_rxfh_context = efx_ethtool_set_rxfh_context,
.get_ts_info = efx_ethtool_get_ts_info,
.get_module_info = efx_ethtool_get_module_info,
.get_module_eeprom = efx_ethtool_get_module_eeprom,

115
drivers/net/ethernet/sfc/ethtool_common.c
View File

@ -1163,52 +1163,8 @@ u32 efx_ethtool_get_rxfh_key_size(struct net_device *net_dev)
return efx->type->rx_hash_key_size;
}
int efx_ethtool_get_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
int rc;
rc = efx->type->rx_pull_rss_config(efx);
if (rc)
return rc;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->indir)
memcpy(rxfh->indir, efx->rss_context.rx_indir_table,
sizeof(efx->rss_context.rx_indir_table));
if (rxfh->key)
memcpy(rxfh->key, efx->rss_context.rx_hash_key,
efx->type->rx_hash_key_size);
return 0;
}
int efx_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
u32 *indir = rxfh->indir;
u8 *key = rxfh->key;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (!indir && !key)
return 0;
if (!key)
key = efx->rss_context.rx_hash_key;
if (!indir)
indir = efx->rss_context.rx_indir_table;
return efx->type->rx_push_rss_config(efx, true, indir, key);
}
int efx_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context)
static int efx_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
struct efx_rss_context *ctx;
@ -1218,7 +1174,7 @@ int efx_ethtool_get_rxfh_context(struct net_device *net_dev,
return -EOPNOTSUPP;
mutex_lock(&efx->rss_lock);
ctx = efx_find_rss_context_entry(efx, rss_context);
ctx = efx_find_rss_context_entry(efx, rxfh->rss_context);
if (!ctx) {
rc = -ENOENT;
goto out_unlock;
@ -1239,11 +1195,35 @@ int efx_ethtool_get_rxfh_context(struct net_device *net_dev,
return rc;
}
int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete)
int efx_ethtool_get_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
int rc;
if (rxfh->rss_context)
return efx_ethtool_get_rxfh_context(net_dev, rxfh);
rc = efx->type->rx_pull_rss_config(efx);
if (rc)
return rc;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->indir)
memcpy(rxfh->indir, efx->rss_context.rx_indir_table,
sizeof(efx->rss_context.rx_indir_table));
if (rxfh->key)
memcpy(rxfh->key, efx->rss_context.rx_hash_key,
efx->type->rx_hash_key_size);
return 0;
}
static int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
u32 *rss_context = &rxfh->rss_context;
struct efx_rss_context *ctx;
u32 *indir = rxfh->indir;
bool allocated = false;
@ -1252,15 +1232,11 @@ int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
if (!efx->type->rx_push_rss_context_config)
return -EOPNOTSUPP;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
mutex_lock(&efx->rss_lock);
if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
if (delete) {
if (rxfh->rss_delete) {
/* alloc + delete == Nothing to do */
rc = -EINVAL;
goto out_unlock;
@ -1283,7 +1259,7 @@ int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
}
}
if (delete) {
if (rxfh->rss_delete) {
/* delete this context */
rc = efx->type->rx_push_rss_context_config(efx, ctx, NULL, NULL);
if (!rc)
@ -1306,6 +1282,33 @@ int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
return rc;
}
int efx_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
u32 *indir = rxfh->indir;
u8 *key = rxfh->key;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (rxfh->rss_context)
return efx_ethtool_set_rxfh_context(net_dev, rxfh, extack);
if (!indir && !key)
return 0;
if (!key)
key = efx->rss_context.rx_hash_key;
if (!indir)
indir = efx->rss_context.rx_indir_table;
return efx->type->rx_push_rss_config(efx, true, indir, key);
}
int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);

6
drivers/net/ethernet/sfc/ethtool_common.h
View File

@ -49,12 +49,6 @@ int efx_ethtool_get_rxfh(struct net_device *net_dev,
int efx_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack);
int efx_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context);
int efx_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete);
int efx_ethtool_reset(struct net_device *net_dev, u32 *flags);
int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
struct ethtool_eeprom *ee,

3
drivers/net/ethernet/sfc/siena/ethtool.c
View File

@ -240,6 +240,7 @@ static int efx_ethtool_get_ts_info(struct net_device *net_dev,
}
const struct ethtool_ops efx_siena_ethtool_ops = {
.cap_rss_ctx_supported = true,
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_USECS_IRQ |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
@ -269,8 +270,6 @@ const struct ethtool_ops efx_siena_ethtool_ops = {
.get_rxfh_key_size = efx_siena_ethtool_get_rxfh_key_size,
.get_rxfh = efx_siena_ethtool_get_rxfh,
.set_rxfh = efx_siena_ethtool_set_rxfh,
.get_rxfh_context = efx_siena_ethtool_get_rxfh_context,
.set_rxfh_context = efx_siena_ethtool_set_rxfh_context,
.get_ts_info = efx_ethtool_get_ts_info,
.get_module_info = efx_siena_ethtool_get_module_info,
.get_module_eeprom = efx_siena_ethtool_get_module_eeprom,

115
drivers/net/ethernet/sfc/siena/ethtool_common.c
View File

@ -1164,52 +1164,8 @@ u32 efx_siena_ethtool_get_rxfh_key_size(struct net_device *net_dev)
return efx->type->rx_hash_key_size;
}
int efx_siena_ethtool_get_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = netdev_priv(net_dev);
int rc;
rc = efx->type->rx_pull_rss_config(efx);
if (rc)
return rc;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->indir)
memcpy(rxfh->indir, efx->rss_context.rx_indir_table,
sizeof(efx->rss_context.rx_indir_table));
if (rxfh->key)
memcpy(rxfh->key, efx->rss_context.rx_hash_key,
efx->type->rx_hash_key_size);
return 0;
}
int efx_siena_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = netdev_priv(net_dev);
u32 *indir = rxfh->indir;
u8 *key = rxfh->key;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (!indir && !key)
return 0;
if (!key)
key = efx->rss_context.rx_hash_key;
if (!indir)
indir = efx->rss_context.rx_indir_table;
return efx->type->rx_push_rss_config(efx, true, indir, key);
}
int efx_siena_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context)
static int efx_siena_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = netdev_priv(net_dev);
struct efx_rss_context *ctx;
@ -1219,7 +1175,7 @@ int efx_siena_ethtool_get_rxfh_context(struct net_device *net_dev,
return -EOPNOTSUPP;
mutex_lock(&efx->rss_lock);
ctx = efx_siena_find_rss_context_entry(efx, rss_context);
ctx = efx_siena_find_rss_context_entry(efx, rxfh->rss_context);
if (!ctx) {
rc = -ENOENT;
goto out_unlock;
@ -1240,11 +1196,35 @@ int efx_siena_ethtool_get_rxfh_context(struct net_device *net_dev,
return rc;
}
int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete)
int efx_siena_ethtool_get_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh)
{
struct efx_nic *efx = netdev_priv(net_dev);
int rc;
if (rxfh->rss_context)
return efx_siena_ethtool_get_rxfh_context(net_dev, rxfh);
rc = efx->type->rx_pull_rss_config(efx);
if (rc)
return rc;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->indir)
memcpy(rxfh->indir, efx->rss_context.rx_indir_table,
sizeof(efx->rss_context.rx_indir_table));
if (rxfh->key)
memcpy(rxfh->key, efx->rss_context.rx_hash_key,
efx->type->rx_hash_key_size);
return 0;
}
static int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = netdev_priv(net_dev);
u32 *rss_context = &rxfh->rss_context;
struct efx_rss_context *ctx;
u32 *indir = rxfh->indir;
bool allocated = false;
@ -1253,15 +1233,11 @@ int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
if (!efx->type->rx_push_rss_context_config)
return -EOPNOTSUPP;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
mutex_lock(&efx->rss_lock);
if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
if (delete) {
if (rxfh->rss_delete) {
/* alloc + delete == Nothing to do */
rc = -EINVAL;
goto out_unlock;
@ -1284,7 +1260,7 @@ int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
}
}
if (delete) {
if (rxfh->rss_delete) {
/* delete this context */
rc = efx->type->rx_push_rss_context_config(efx, ctx, NULL, NULL);
if (!rc)
@ -1307,6 +1283,33 @@ int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
return rc;
}
int efx_siena_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack)
{
struct efx_nic *efx = netdev_priv(net_dev);
u32 *indir = rxfh->indir;
u8 *key = rxfh->key;
/* Hash function is Toeplitz, cannot be changed */
if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
rxfh->hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (rxfh->rss_context)
efx_siena_ethtool_set_rxfh_context(net_dev, rxfh, extack);
if (!indir && !key)
return 0;
if (!key)
key = efx->rss_context.rx_hash_key;
if (!indir)
indir = efx->rss_context.rx_indir_table;
return efx->type->rx_push_rss_config(efx, true, indir, key);
}
int efx_siena_ethtool_reset(struct net_device *net_dev, u32 *flags)
{
struct efx_nic *efx = netdev_priv(net_dev);

6
drivers/net/ethernet/sfc/siena/ethtool_common.h
View File

@ -46,12 +46,6 @@ int efx_siena_ethtool_get_rxfh(struct net_device *net_dev,
int efx_siena_ethtool_set_rxfh(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
struct netlink_ext_ack *extack);
int efx_siena_ethtool_get_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 rss_context);
int efx_siena_ethtool_set_rxfh_context(struct net_device *net_dev,
struct ethtool_rxfh_param *rxfh,
u32 *rss_context, bool delete);
int efx_siena_ethtool_reset(struct net_device *net_dev, u32 *flags);
int efx_siena_ethtool_get_module_eeprom(struct net_device *net_dev,
struct ethtool_eeprom *ee,

26
include/linux/ethtool.h
View File

@ -609,6 +609,12 @@ struct ethtool_mm_stats {
* which may be zero. On GET (read from the driver), the size of the
* hardware hash key.
* @key: The hash key of size @key_size bytes.
* @rss_context: RSS context identifier. Context 0 is the default for normal
* traffic; other contexts can be referenced as the destination for RX flow
* classification rules. On SET, %ETH_RXFH_CONTEXT_ALLOC is used
* to allocate a new RSS context; on return this field will
* contain the ID of the newly allocated context.
* @rss_delete: Set to non-ZERO to remove the @rss_context context.
*/
struct ethtool_rxfh_param {
u8 hfunc;
@ -616,12 +622,16 @@ struct ethtool_rxfh_param {
u32 *indir;
u32 key_size;
u8 *key;
u32 rss_context;
u8 rss_delete;
};
/**
* struct ethtool_ops - optional netdev operations
* @cap_link_lanes_supported: indicates if the driver supports lanes
* parameter.
* @cap_rss_ctx_supported: indicates if the driver supports RSS
* contexts.
* @supported_coalesce_params: supported types of interrupt coalescing.
* @supported_ring_params: supported ring params.
* @get_drvinfo: Report driver/device information. Modern drivers no
@ -718,15 +728,6 @@ struct ethtool_rxfh_param {
* will remain unchanged.
* Returns a negative error code or zero. An error code must be returned
* if at least one unsupported change was requested.
* @get_rxfh_context: Get the contents of the RX flow hash indirection table,
* hash key, and/or hash function assiciated to the given rss context.
* Returns a negative error code or zero.
* @set_rxfh_context: Create, remove and configure RSS contexts. Allows setting
* the contents of the RX flow hash indirection table, hash key, and/or
* hash function associated to the given context. Arguments which are set
* to %NULL or zero will remain unchanged.
* Returns a negative error code or zero. An error code must be returned
* if at least one unsupported change was requested.
* @get_channels: Get number of channels.
* @set_channels: Set number of channels. Returns a negative error code or
* zero.
@ -809,6 +810,7 @@ struct ethtool_rxfh_param {
*/
struct ethtool_ops {
u32 cap_link_lanes_supported:1;
u32 cap_rss_ctx_supported:1;
u32 supported_coalesce_params;
u32 supported_ring_params;
void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
@ -871,12 +873,6 @@ struct ethtool_ops {
int (*get_rxfh)(struct net_device *, struct ethtool_rxfh_param *);
int (*set_rxfh)(struct net_device *, struct ethtool_rxfh_param *,
struct netlink_ext_ack *extack);
int (*get_rxfh_context)(struct net_device *,
struct ethtool_rxfh_param *,
u32 rss_context);
int (*set_rxfh_context)(struct net_device *,
struct ethtool_rxfh_param *,
u32 *rss_context, bool delete);
void (*get_channels)(struct net_device *, struct ethtool_channels *);
int (*set_channels)(struct net_device *, struct ethtool_channels *);
int (*get_dump_flag)(struct net_device *, struct ethtool_dump *);

27
net/ethtool/ioctl.c
View File

@ -1201,7 +1201,7 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
return -EINVAL;
/* Most drivers don't handle rss_context, check it's 0 as well */
if (rxfh.rss_context && !ops->get_rxfh_context)
if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
return -EOPNOTSUPP;
rxfh.indir_size = rxfh_dev.indir_size;
@ -1225,11 +1225,9 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
if (user_key_size)
rxfh_dev.key = rss_config + indir_bytes;
if (rxfh.rss_context)
ret = dev->ethtool_ops->get_rxfh_context(dev, &rxfh_dev,
rxfh.rss_context);
else
ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev);
rxfh_dev.rss_context = rxfh.rss_context;
ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev);
if (ret)
goto out;
@ -1257,7 +1255,6 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
struct netlink_ext_ack *extack = NULL;
struct ethtool_rxnfc rx_rings;
struct ethtool_rxfh rxfh;
bool delete = false;
u32 indir_bytes = 0;
u8 *rss_config;
int ret;
@ -1277,7 +1274,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
return -EINVAL;
/* Most drivers don't handle rss_context, check it's 0 as well */
if (rxfh.rss_context && !ops->set_rxfh_context)
if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
return -EOPNOTSUPP;
/* If either indir, hash key or function is valid, proceed further.
@ -1327,7 +1324,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
for (i = 0; i < dev_indir_size; i++)
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
} else {
delete = true;
rxfh_dev.rss_delete = true;
}
}
@ -1343,21 +1340,17 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
}
rxfh_dev.hfunc = rxfh.hfunc;
rxfh_dev.rss_context = rxfh.rss_context;
if (rxfh.rss_context)
ret = ops->set_rxfh_context(dev, &rxfh_dev,
&rxfh.rss_context, delete);
else
ret = ops->set_rxfh(dev, &rxfh_dev, extack);
ret = ops->set_rxfh(dev, &rxfh_dev, extack);
if (ret)
goto out;
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
&rxfh.rss_context, sizeof(rxfh.rss_context)))
&rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context)))
ret = -EFAULT;
if (!rxfh.rss_context) {
if (!rxfh_dev.rss_context) {
/* indicate whether rxfh was set to default */
if (rxfh.indir_size == 0)
dev->priv_flags &= ~IFF_RXFH_CONFIGURED;

9
net/ethtool/rss.c
View File

@ -59,7 +59,7 @@ rss_prepare_data(const struct ethnl_req_info *req_base,
return -EOPNOTSUPP;
/* Some drivers don't handle rss_context */
if (request->rss_context && !ops->get_rxfh_context)
if (request->rss_context && !ops->cap_rss_ctx_supported)
return -EOPNOTSUPP;
ret = ethnl_ops_begin(dev);
@ -90,12 +90,9 @@ rss_prepare_data(const struct ethnl_req_info *req_base,
rxfh.indir = data->indir_table;
rxfh.key_size = data->hkey_size;
rxfh.key = data->hkey;
rxfh.rss_context = request->rss_context;
if (request->rss_context)
ret = ops->get_rxfh_context(dev, &rxfh, request->rss_context);
else
ret = ops->get_rxfh(dev, &rxfh);
ret = ops->get_rxfh(dev, &rxfh);
if (ret)
goto out_ops;