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eth: fbnic: support querying RSS config

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The initial driver submission already added all the RSS state,
as part of multi-queue support. Expose the configuration via
the ethtool APIs.

Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20241220025241.1522781-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alexander Duyck 2024-12-19 18:52:33 -08:00 committed by Jakub Kicinski
parent 7d0bf493b1
commit 7cb06a6a77
1 changed files with 103 additions and 0 deletions
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103
drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c
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@ -102,6 +102,105 @@ static int fbnic_get_sset_count(struct net_device *dev, int sset)
}
}
static int fbnic_get_rss_hash_idx(u32 flow_type)
{
switch (flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
case TCP_V4_FLOW:
return FBNIC_TCP4_HASH_OPT;
case TCP_V6_FLOW:
return FBNIC_TCP6_HASH_OPT;
case UDP_V4_FLOW:
return FBNIC_UDP4_HASH_OPT;
case UDP_V6_FLOW:
return FBNIC_UDP6_HASH_OPT;
case AH_V4_FLOW:
case ESP_V4_FLOW:
case AH_ESP_V4_FLOW:
case SCTP_V4_FLOW:
case IPV4_FLOW:
case IPV4_USER_FLOW:
return FBNIC_IPV4_HASH_OPT;
case AH_V6_FLOW:
case ESP_V6_FLOW:
case AH_ESP_V6_FLOW:
case SCTP_V6_FLOW:
case IPV6_FLOW:
case IPV6_USER_FLOW:
return FBNIC_IPV6_HASH_OPT;
case ETHER_FLOW:
return FBNIC_ETHER_HASH_OPT;
}
return -1;
}
static int
fbnic_get_rss_hash_opts(struct fbnic_net *fbn, struct ethtool_rxnfc *cmd)
{
int hash_opt_idx = fbnic_get_rss_hash_idx(cmd->flow_type);
if (hash_opt_idx < 0)
return -EINVAL;
/* Report options from rss_en table in fbn */
cmd->data = fbn->rss_flow_hash[hash_opt_idx];
return 0;
}
static int fbnic_get_rxnfc(struct net_device *netdev,
struct ethtool_rxnfc *cmd, u32 *rule_locs)
{
struct fbnic_net *fbn = netdev_priv(netdev);
int ret = -EOPNOTSUPP;
switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = fbn->num_rx_queues;
ret = 0;
break;
case ETHTOOL_GRXFH:
ret = fbnic_get_rss_hash_opts(fbn, cmd);
break;
}
return ret;
}
static u32 fbnic_get_rxfh_key_size(struct net_device *netdev)
{
return FBNIC_RPC_RSS_KEY_BYTE_LEN;
}
static u32 fbnic_get_rxfh_indir_size(struct net_device *netdev)
{
return FBNIC_RPC_RSS_TBL_SIZE;
}
static int
fbnic_get_rxfh(struct net_device *netdev, struct ethtool_rxfh_param *rxfh)
{
struct fbnic_net *fbn = netdev_priv(netdev);
unsigned int i;
rxfh->hfunc = ETH_RSS_HASH_TOP;
if (rxfh->key) {
for (i = 0; i < FBNIC_RPC_RSS_KEY_BYTE_LEN; i++) {
u32 rss_key = fbn->rss_key[i / 4] << ((i % 4) * 8);
rxfh->key[i] = rss_key >> 24;
}
}
if (rxfh->indir) {
for (i = 0; i < FBNIC_RPC_RSS_TBL_SIZE; i++)
rxfh->indir[i] = fbn->indir_tbl[0][i];
}
return 0;
}
static int
fbnic_get_ts_info(struct net_device *netdev,
struct kernel_ethtool_ts_info *tsinfo)
@ -209,6 +308,10 @@ static const struct ethtool_ops fbnic_ethtool_ops = {
.get_strings = fbnic_get_strings,
.get_ethtool_stats = fbnic_get_ethtool_stats,
.get_sset_count = fbnic_get_sset_count,
.get_rxnfc = fbnic_get_rxnfc,
.get_rxfh_key_size = fbnic_get_rxfh_key_size,
.get_rxfh_indir_size = fbnic_get_rxfh_indir_size,
.get_rxfh = fbnic_get_rxfh,
.get_ts_info = fbnic_get_ts_info,
.get_ts_stats = fbnic_get_ts_stats,
.get_eth_mac_stats = fbnic_get_eth_mac_stats,