From e25578777facd498480d3376752ad21a23375849 Mon Sep 17 00:00:00 2001 From: Venkata Duvvuru Date: Mon, 21 Apr 2014 15:38:00 +0530 Subject: be2net: Support for configurable RSS hash key This be2net patch implements the get/set_rxfh() ethtool hooks. RSS_CONFIG device command is invoked to set hashkey and indirection table. It also uses an initial random value for RSS hash key instead of a hard-coded value as hard-coded values for a hash-key are usually considered a security risk. Signed-off-by: Venkat Duvvuru Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_ethtool.c | 92 ++++++++++++++++++++++---- 1 file changed, 80 insertions(+), 12 deletions(-) (limited to 'drivers/net/ethernet/emulex/benet/be_ethtool.c') diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c index 15ba96cba65d..6f3494e41511 100644 --- a/drivers/net/ethernet/emulex/benet/be_ethtool.c +++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c @@ -933,27 +933,27 @@ static u64 be_get_rss_hash_opts(struct be_adapter *adapter, u64 flow_type) switch (flow_type) { case TCP_V4_FLOW: - if (adapter->rss_flags & RSS_ENABLE_IPV4) + if (adapter->rss_info.rss_flags & RSS_ENABLE_IPV4) data |= RXH_IP_DST | RXH_IP_SRC; - if (adapter->rss_flags & RSS_ENABLE_TCP_IPV4) + if (adapter->rss_info.rss_flags & RSS_ENABLE_TCP_IPV4) data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; break; case UDP_V4_FLOW: - if (adapter->rss_flags & RSS_ENABLE_IPV4) + if (adapter->rss_info.rss_flags & RSS_ENABLE_IPV4) data |= RXH_IP_DST | RXH_IP_SRC; - if (adapter->rss_flags & RSS_ENABLE_UDP_IPV4) + if (adapter->rss_info.rss_flags & RSS_ENABLE_UDP_IPV4) data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; break; case TCP_V6_FLOW: - if (adapter->rss_flags & RSS_ENABLE_IPV6) + if (adapter->rss_info.rss_flags & RSS_ENABLE_IPV6) data |= RXH_IP_DST | RXH_IP_SRC; - if (adapter->rss_flags & RSS_ENABLE_TCP_IPV6) + if (adapter->rss_info.rss_flags & RSS_ENABLE_TCP_IPV6) data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; break; case UDP_V6_FLOW: - if (adapter->rss_flags & RSS_ENABLE_IPV6) + if (adapter->rss_info.rss_flags & RSS_ENABLE_IPV6) data |= RXH_IP_DST | RXH_IP_SRC; - if (adapter->rss_flags & RSS_ENABLE_UDP_IPV6) + if (adapter->rss_info.rss_flags & RSS_ENABLE_UDP_IPV6) data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; break; } @@ -992,7 +992,7 @@ static int be_set_rss_hash_opts(struct be_adapter *adapter, struct be_rx_obj *rxo; int status = 0, i, j; u8 rsstable[128]; - u32 rss_flags = adapter->rss_flags; + u32 rss_flags = adapter->rss_info.rss_flags; if (cmd->data != L3_RSS_FLAGS && cmd->data != (L3_RSS_FLAGS | L4_RSS_FLAGS)) @@ -1039,7 +1039,7 @@ static int be_set_rss_hash_opts(struct be_adapter *adapter, return -EINVAL; } - if (rss_flags == adapter->rss_flags) + if (rss_flags == adapter->rss_info.rss_flags) return status; if (be_multi_rxq(adapter)) { @@ -1051,9 +1051,11 @@ static int be_set_rss_hash_opts(struct be_adapter *adapter, } } } - status = be_cmd_rss_config(adapter, rsstable, rss_flags, 128); + + status = be_cmd_rss_config(adapter, adapter->rss_info.rsstable, + rss_flags, 128, adapter->rss_info.rss_hkey); if (!status) - adapter->rss_flags = rss_flags; + adapter->rss_info.rss_flags = rss_flags; return status; } @@ -1103,6 +1105,68 @@ static int be_set_channels(struct net_device *netdev, return be_update_queues(adapter); } +static u32 be_get_rxfh_indir_size(struct net_device *netdev) +{ + return RSS_INDIR_TABLE_LEN; +} + +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) +{ + struct be_adapter *adapter = netdev_priv(netdev); + int i; + struct rss_info *rss = &adapter->rss_info; + + if (indir) { + for (i = 0; i < RSS_INDIR_TABLE_LEN; i++) + indir[i] = rss->rss_queue[i]; + } + + if (hkey) + memcpy(hkey, rss->rss_hkey, RSS_HASH_KEY_LEN); + + return 0; +} + +static int be_set_rxfh(struct net_device *netdev, u32 *indir, u8 *hkey) +{ + int rc = 0, i, j; + struct be_adapter *adapter = netdev_priv(netdev); + u8 rsstable[RSS_INDIR_TABLE_LEN]; + + if (indir) { + struct be_rx_obj *rxo; + for (i = 0; i < RSS_INDIR_TABLE_LEN; i++) { + j = indir[i]; + rxo = &adapter->rx_obj[j]; + rsstable[i] = rxo->rss_id; + adapter->rss_info.rss_queue[i] = j; + } + } else { + memcpy(rsstable, adapter->rss_info.rsstable, + RSS_INDIR_TABLE_LEN); + } + + if (!hkey) + hkey = adapter->rss_info.rss_hkey; + + rc = be_cmd_rss_config(adapter, rsstable, + adapter->rss_info.rss_flags, + RSS_INDIR_TABLE_LEN, hkey); + if (rc) { + adapter->rss_info.rss_flags = RSS_ENABLE_NONE; + return -EIO; + } + memcpy(adapter->rss_info.rss_hkey, hkey, RSS_HASH_KEY_LEN); + memcpy(adapter->rss_info.rsstable, rsstable, + RSS_INDIR_TABLE_LEN); + return 0; +} + const struct ethtool_ops be_ethtool_ops = { .get_settings = be_get_settings, .get_drvinfo = be_get_drvinfo, @@ -1129,6 +1193,10 @@ const struct ethtool_ops be_ethtool_ops = { .self_test = be_self_test, .get_rxnfc = be_get_rxnfc, .set_rxnfc = be_set_rxnfc, + .get_rxfh_indir_size = be_get_rxfh_indir_size, + .get_rxfh_key_size = be_get_rxfh_key_size, + .get_rxfh = be_get_rxfh, + .set_rxfh = be_set_rxfh, .get_channels = be_get_channels, .set_channels = be_set_channels }; -- cgit v1.2.3