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sfc: support setting RSS hash key through ethtool API 

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2017-01-17 12:01:53 +00:00 committed by David S. Miller
parent 96fe11f27b
commit f74d199519
4 changed files with 50 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/net/ethernet/sfc/ef10.c
View File

@ -1325,7 +1325,7 @@ static int efx_ef10_init_nic(struct efx_nic *efx)
}
/* don't fail init if RSS setup doesn't work */
rc = efx->type->rx_push_rss_config(efx, false, efx->rx_indir_table);
rc = efx->type->rx_push_rss_config(efx, false, efx->rx_indir_table, NULL);
efx->rss_active = (rc == 0);
return 0;
@ -2535,7 +2535,7 @@ static void efx_ef10_free_rss_context(struct efx_nic *efx, u32 context)
}
static int efx_ef10_populate_rss_table(struct efx_nic *efx, u32 context,
const u32 *rx_indir_table)
const u32 *rx_indir_table, const u8 *key)
{
MCDI_DECLARE_BUF(tablebuf, MC_CMD_RSS_CONTEXT_SET_TABLE_IN_LEN);
MCDI_DECLARE_BUF(keybuf, MC_CMD_RSS_CONTEXT_SET_KEY_IN_LEN);
@ -2546,6 +2546,11 @@ static int efx_ef10_populate_rss_table(struct efx_nic *efx, u32 context,
BUILD_BUG_ON(ARRAY_SIZE(efx->rx_indir_table) !=
MC_CMD_RSS_CONTEXT_SET_TABLE_IN_INDIRECTION_TABLE_LEN);
/* This iterates over the length of efx->rx_indir_table, but copies
* bytes from rx_indir_table. That's because the latter is a pointer
* rather than an array, but should have the same length.
* The efx->rx_hash_key loop below is similar.
*/
for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); ++i)
MCDI_PTR(tablebuf,
RSS_CONTEXT_SET_TABLE_IN_INDIRECTION_TABLE)[i] =
@ -2561,8 +2566,7 @@ static int efx_ef10_populate_rss_table(struct efx_nic *efx, u32 context,
BUILD_BUG_ON(ARRAY_SIZE(efx->rx_hash_key) !=
MC_CMD_RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY_LEN);
for (i = 0; i < ARRAY_SIZE(efx->rx_hash_key); ++i)
MCDI_PTR(keybuf, RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY)[i] =
efx->rx_hash_key[i];
MCDI_PTR(keybuf, RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY)[i] = key[i];
return efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_KEY, keybuf,
sizeof(keybuf), NULL, 0, NULL);
@ -2595,7 +2599,8 @@ static int efx_ef10_rx_push_shared_rss_config(struct efx_nic *efx,
}
static int efx_ef10_rx_push_exclusive_rss_config(struct efx_nic *efx,
const u32 *rx_indir_table)
const u32 *rx_indir_table,
const u8 *key)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
int rc;
@ -2614,7 +2619,7 @@ static int efx_ef10_rx_push_exclusive_rss_config(struct efx_nic *efx,
}
rc = efx_ef10_populate_rss_table(efx, new_rx_rss_context,
rx_indir_table);
rx_indir_table, key);
if (rc != 0)
goto fail2;
@ -2625,6 +2630,9 @@ static int efx_ef10_rx_push_exclusive_rss_config(struct efx_nic *efx,
if (rx_indir_table != efx->rx_indir_table)
memcpy(efx->rx_indir_table, rx_indir_table,
sizeof(efx->rx_indir_table));
if (key != efx->rx_hash_key)
memcpy(efx->rx_hash_key, key, efx->type->rx_hash_key_size);
return 0;
fail2:
@ -2636,14 +2644,18 @@ fail1:
}
static int efx_ef10_pf_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table)
const u32 *rx_indir_table,
const u8 *key)
{
int rc;
if (efx->rss_spread == 1)
return 0;
rc = efx_ef10_rx_push_exclusive_rss_config(efx, rx_indir_table);
if (!key)
key = efx->rx_hash_key;
rc = efx_ef10_rx_push_exclusive_rss_config(efx, rx_indir_table, key);
if (rc == -ENOBUFS && !user) {
unsigned context_size;
@ -2681,6 +2693,8 @@ static int efx_ef10_pf_rx_push_rss_config(struct efx_nic *efx, bool user,
static int efx_ef10_vf_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table
__attribute__ ((unused)),
const u8 *key
__attribute__ ((unused)))
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
@ -5686,6 +5700,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
.max_rx_ip_filters = HUNT_FILTER_TBL_ROWS,
.hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
1 << HWTSTAMP_FILTER_ALL,
.rx_hash_key_size = 40,
};
const struct efx_nic_type efx_hunt_a0_nic_type = {
@ -5812,4 +5827,5 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
.max_rx_ip_filters = HUNT_FILTER_TBL_ROWS,
.hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
1 << HWTSTAMP_FILTER_ALL,
.rx_hash_key_size = 40,
};

24
drivers/net/ethernet/sfc/ethtool.c
View File

@ -1278,6 +1278,13 @@ static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
return (efx->n_rx_channels == 1) ? 0 : ARRAY_SIZE(efx->rx_indir_table);
}
static u32 efx_ethtool_get_rxfh_key_size(struct net_device *net_dev)
{
struct efx_nic *efx = netdev_priv(net_dev);
return efx->type->rx_hash_key_size;
}
static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,
u8 *hfunc)
{
@ -1287,6 +1294,8 @@ static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,
*hfunc = ETH_RSS_HASH_TOP;
if (indir)
memcpy(indir, efx->rx_indir_table, sizeof(efx->rx_indir_table));
if (key)
memcpy(key, efx->rx_hash_key, efx->type->rx_hash_key_size);
return 0;
}
@ -1295,14 +1304,18 @@ static int efx_ethtool_set_rxfh(struct net_device *net_dev, const u32 *indir,
{
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))
/* Hash function is Toeplitz, cannot be changed */
if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
if (!indir)
if (!indir && !key)
return 0;
return efx->type->rx_push_rss_config(efx, true, indir);
if (!key)
key = efx->rx_hash_key;
if (!indir)
indir = efx->rx_indir_table;
return efx->type->rx_push_rss_config(efx, true, indir, key);
}
static int efx_ethtool_get_ts_info(struct net_device *net_dev,
@ -1377,6 +1390,7 @@ const struct ethtool_ops efx_ethtool_ops = {
.get_rxnfc = efx_ethtool_get_rxnfc,
.set_rxnfc = efx_ethtool_set_rxnfc,
.get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size,
.get_rxfh_key_size = efx_ethtool_get_rxfh_key_size,
.get_rxfh = efx_ethtool_get_rxfh,
.set_rxfh = efx_ethtool_set_rxfh,
.get_ts_info = efx_ethtool_get_ts_info,

3
drivers/net/ethernet/sfc/net_driver.h
View File

@ -1311,7 +1311,7 @@ struct efx_nic_type {
unsigned int (*tx_limit_len)(struct efx_tx_queue *tx_queue,
dma_addr_t dma_addr, unsigned int len);
int (*rx_push_rss_config)(struct efx_nic *efx, bool user,
const u32 *rx_indir_table);
const u32 *rx_indir_table, const u8 *key);
int (*rx_probe)(struct efx_rx_queue *rx_queue);
void (*rx_init)(struct efx_rx_queue *rx_queue);
void (*rx_remove)(struct efx_rx_queue *rx_queue);
@ -1410,6 +1410,7 @@ struct efx_nic_type {
int mcdi_max_ver;
unsigned int max_rx_ip_filters;
u32 hwtstamp_filters;
unsigned int rx_hash_key_size;
};
/**************************************************************************

7
drivers/net/ethernet/sfc/siena.c
View File

@ -333,11 +333,13 @@ fail1:
}
static int siena_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table)
const u32 *rx_indir_table, const u8 *key)
{
efx_oword_t temp;
/* Set hash key for IPv4 */
if (key)
memcpy(efx->rx_hash_key, key, sizeof(temp));
memcpy(&temp, efx->rx_hash_key, sizeof(temp));
efx_writeo(efx, &temp, FR_BZ_RX_RSS_TKEY);
@ -402,7 +404,7 @@ static int siena_init_nic(struct efx_nic *efx)
EFX_RX_USR_BUF_SIZE >> 5);
efx_writeo(efx, &temp, FR_AZ_RX_CFG);
siena_rx_push_rss_config(efx, false, efx->rx_indir_table);
siena_rx_push_rss_config(efx, false, efx->rx_indir_table, NULL);
efx->rss_active = true;
/* Enable event logging */
@ -1054,4 +1056,5 @@ const struct efx_nic_type siena_a0_nic_type = {
.hwtstamp_filters = (1 << HWTSTAMP_FILTER_NONE |
1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT |
1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT),
.rx_hash_key_size = 16,
};