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net/mlx4_en: Manage flow steering rules with ethtool
Implement the ethtool APIs for attaching L2/L3/L4 based flow steering rules to the netdevice RX rings. Added set_rxnfc callback and enhanced the existing get_rxnfc callback. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.co.il> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion
David S. Miller
parent
592e49dda8
commit
820672812f
@ -38,6 +38,10 @@
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#include "mlx4_en.h"
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#include "en_port.h"
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#define EN_ETHTOOL_QP_ATTACH (1ull << 63)
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#define EN_ETHTOOL_MAC_MASK 0xffffffffffffULL
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#define EN_ETHTOOL_SHORT_MASK cpu_to_be16(0xffff)
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#define EN_ETHTOOL_WORD_MASK cpu_to_be32(0xffffffff)
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static void
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mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
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@ -599,16 +603,369 @@ static int mlx4_en_set_rxfh_indir(struct net_device *dev,
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return err;
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}
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#define all_zeros_or_all_ones(field) \
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((field) == 0 || (field) == (__force typeof(field))-1)
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static int mlx4_en_validate_flow(struct net_device *dev,
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struct ethtool_rxnfc *cmd)
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{
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struct ethtool_usrip4_spec *l3_mask;
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struct ethtool_tcpip4_spec *l4_mask;
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struct ethhdr *eth_mask;
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u64 full_mac = ~0ull;
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u64 zero_mac = 0;
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if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
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return -EINVAL;
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switch (cmd->fs.flow_type & ~FLOW_EXT) {
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case TCP_V4_FLOW:
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case UDP_V4_FLOW:
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if (cmd->fs.m_u.tcp_ip4_spec.tos)
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return -EINVAL;
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l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
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/* don't allow mask which isn't all 0 or 1 */
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if (!all_zeros_or_all_ones(l4_mask->ip4src) ||
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!all_zeros_or_all_ones(l4_mask->ip4dst) ||
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!all_zeros_or_all_ones(l4_mask->psrc) ||
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!all_zeros_or_all_ones(l4_mask->pdst))
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return -EINVAL;
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break;
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case IP_USER_FLOW:
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l3_mask = &cmd->fs.m_u.usr_ip4_spec;
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if (l3_mask->l4_4_bytes || l3_mask->tos || l3_mask->proto ||
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cmd->fs.h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4 ||
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(!l3_mask->ip4src && !l3_mask->ip4dst) ||
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!all_zeros_or_all_ones(l3_mask->ip4src) ||
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!all_zeros_or_all_ones(l3_mask->ip4dst))
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return -EINVAL;
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break;
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case ETHER_FLOW:
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eth_mask = &cmd->fs.m_u.ether_spec;
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/* source mac mask must not be set */
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if (memcmp(eth_mask->h_source, &zero_mac, ETH_ALEN))
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return -EINVAL;
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/* dest mac mask must be ff:ff:ff:ff:ff:ff */
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if (memcmp(eth_mask->h_dest, &full_mac, ETH_ALEN))
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return -EINVAL;
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if (!all_zeros_or_all_ones(eth_mask->h_proto))
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return -EINVAL;
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break;
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default:
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return -EINVAL;
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}
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if ((cmd->fs.flow_type & FLOW_EXT)) {
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if (cmd->fs.m_ext.vlan_etype ||
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!(cmd->fs.m_ext.vlan_tci == 0 ||
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cmd->fs.m_ext.vlan_tci == cpu_to_be16(0xfff)))
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return -EINVAL;
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}
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return 0;
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}
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static int add_ip_rule(struct mlx4_en_priv *priv,
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struct ethtool_rxnfc *cmd,
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struct list_head *list_h)
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{
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struct mlx4_spec_list *spec_l3;
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struct ethtool_usrip4_spec *l3_mask = &cmd->fs.m_u.usr_ip4_spec;
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spec_l3 = kzalloc(sizeof *spec_l3, GFP_KERNEL);
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if (!spec_l3) {
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en_err(priv, "Fail to alloc ethtool rule.\n");
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return -ENOMEM;
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}
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spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
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spec_l3->ipv4.src_ip = cmd->fs.h_u.usr_ip4_spec.ip4src;
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if (l3_mask->ip4src)
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spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
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spec_l3->ipv4.dst_ip = cmd->fs.h_u.usr_ip4_spec.ip4dst;
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if (l3_mask->ip4dst)
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spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
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list_add_tail(&spec_l3->list, list_h);
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return 0;
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}
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static int add_tcp_udp_rule(struct mlx4_en_priv *priv,
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struct ethtool_rxnfc *cmd,
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struct list_head *list_h, int proto)
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{
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struct mlx4_spec_list *spec_l3;
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struct mlx4_spec_list *spec_l4;
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struct ethtool_tcpip4_spec *l4_mask = &cmd->fs.m_u.tcp_ip4_spec;
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spec_l3 = kzalloc(sizeof *spec_l3, GFP_KERNEL);
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spec_l4 = kzalloc(sizeof *spec_l4, GFP_KERNEL);
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if (!spec_l4 || !spec_l3) {
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en_err(priv, "Fail to alloc ethtool rule.\n");
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kfree(spec_l3);
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kfree(spec_l4);
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return -ENOMEM;
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}
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spec_l3->id = MLX4_NET_TRANS_RULE_ID_IPV4;
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if (proto == TCP_V4_FLOW) {
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spec_l4->id = MLX4_NET_TRANS_RULE_ID_TCP;
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spec_l3->ipv4.src_ip = cmd->fs.h_u.tcp_ip4_spec.ip4src;
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spec_l3->ipv4.dst_ip = cmd->fs.h_u.tcp_ip4_spec.ip4dst;
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spec_l4->tcp_udp.src_port = cmd->fs.h_u.tcp_ip4_spec.psrc;
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spec_l4->tcp_udp.dst_port = cmd->fs.h_u.tcp_ip4_spec.pdst;
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} else {
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spec_l4->id = MLX4_NET_TRANS_RULE_ID_UDP;
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spec_l3->ipv4.src_ip = cmd->fs.h_u.udp_ip4_spec.ip4src;
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spec_l3->ipv4.dst_ip = cmd->fs.h_u.udp_ip4_spec.ip4dst;
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spec_l4->tcp_udp.src_port = cmd->fs.h_u.udp_ip4_spec.psrc;
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spec_l4->tcp_udp.dst_port = cmd->fs.h_u.udp_ip4_spec.pdst;
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}
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if (l4_mask->ip4src)
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spec_l3->ipv4.src_ip_msk = EN_ETHTOOL_WORD_MASK;
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if (l4_mask->ip4dst)
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spec_l3->ipv4.dst_ip_msk = EN_ETHTOOL_WORD_MASK;
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if (l4_mask->psrc)
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spec_l4->tcp_udp.src_port_msk = EN_ETHTOOL_SHORT_MASK;
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if (l4_mask->pdst)
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spec_l4->tcp_udp.dst_port_msk = EN_ETHTOOL_SHORT_MASK;
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list_add_tail(&spec_l3->list, list_h);
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list_add_tail(&spec_l4->list, list_h);
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return 0;
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}
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static int mlx4_en_ethtool_to_net_trans_rule(struct net_device *dev,
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struct ethtool_rxnfc *cmd,
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struct list_head *rule_list_h)
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{
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int err;
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u64 mac;
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__be64 be_mac;
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struct ethhdr *eth_spec;
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_spec_list *spec_l2;
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__be64 mac_msk = cpu_to_be64(EN_ETHTOOL_MAC_MASK << 16);
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err = mlx4_en_validate_flow(dev, cmd);
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if (err)
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return err;
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spec_l2 = kzalloc(sizeof *spec_l2, GFP_KERNEL);
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if (!spec_l2)
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return -ENOMEM;
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mac = priv->mac & EN_ETHTOOL_MAC_MASK;
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be_mac = cpu_to_be64(mac << 16);
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spec_l2->id = MLX4_NET_TRANS_RULE_ID_ETH;
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memcpy(spec_l2->eth.dst_mac_msk, &mac_msk, ETH_ALEN);
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if ((cmd->fs.flow_type & ~FLOW_EXT) != ETHER_FLOW)
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memcpy(spec_l2->eth.dst_mac, &be_mac, ETH_ALEN);
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if ((cmd->fs.flow_type & FLOW_EXT) && cmd->fs.m_ext.vlan_tci) {
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spec_l2->eth.vlan_id = cmd->fs.h_ext.vlan_tci;
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spec_l2->eth.vlan_id_msk = cpu_to_be16(0xfff);
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}
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list_add_tail(&spec_l2->list, rule_list_h);
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switch (cmd->fs.flow_type & ~FLOW_EXT) {
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case ETHER_FLOW:
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eth_spec = &cmd->fs.h_u.ether_spec;
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memcpy(&spec_l2->eth.dst_mac, eth_spec->h_dest, ETH_ALEN);
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spec_l2->eth.ether_type = eth_spec->h_proto;
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if (eth_spec->h_proto)
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spec_l2->eth.ether_type_enable = 1;
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break;
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case IP_USER_FLOW:
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err = add_ip_rule(priv, cmd, rule_list_h);
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break;
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case TCP_V4_FLOW:
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err = add_tcp_udp_rule(priv, cmd, rule_list_h, TCP_V4_FLOW);
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break;
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case UDP_V4_FLOW:
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err = add_tcp_udp_rule(priv, cmd, rule_list_h, UDP_V4_FLOW);
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break;
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}
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return err;
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}
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static int mlx4_en_flow_replace(struct net_device *dev,
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struct ethtool_rxnfc *cmd)
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{
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int err;
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct ethtool_flow_id *loc_rule;
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struct mlx4_spec_list *spec, *tmp_spec;
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u32 qpn;
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u64 reg_id;
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struct mlx4_net_trans_rule rule = {
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.queue_mode = MLX4_NET_TRANS_Q_FIFO,
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.exclusive = 0,
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.allow_loopback = 1,
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.promisc_mode = MLX4_FS_PROMISC_NONE,
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};
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rule.port = priv->port;
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rule.priority = MLX4_DOMAIN_ETHTOOL | cmd->fs.location;
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INIT_LIST_HEAD(&rule.list);
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/* Allow direct QP attaches if the EN_ETHTOOL_QP_ATTACH flag is set */
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if (cmd->fs.ring_cookie == RX_CLS_FLOW_DISC)
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return -EINVAL;
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else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) {
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qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1);
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} else {
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if (cmd->fs.ring_cookie >= priv->rx_ring_num) {
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en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist.\n",
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cmd->fs.ring_cookie);
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return -EINVAL;
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}
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qpn = priv->rss_map.qps[cmd->fs.ring_cookie].qpn;
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if (!qpn) {
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en_warn(priv, "rxnfc: RX ring (%llu) is inactive.\n",
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cmd->fs.ring_cookie);
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return -EINVAL;
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}
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}
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rule.qpn = qpn;
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err = mlx4_en_ethtool_to_net_trans_rule(dev, cmd, &rule.list);
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if (err)
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goto out_free_list;
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loc_rule = &priv->ethtool_rules[cmd->fs.location];
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if (loc_rule->id) {
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err = mlx4_flow_detach(priv->mdev->dev, loc_rule->id);
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if (err) {
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en_err(priv, "Fail to detach network rule at location %d. registration id = %llx\n",
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cmd->fs.location, loc_rule->id);
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goto out_free_list;
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}
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loc_rule->id = 0;
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memset(&loc_rule->flow_spec, 0,
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sizeof(struct ethtool_rx_flow_spec));
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}
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err = mlx4_flow_attach(priv->mdev->dev, &rule, ®_id);
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if (err) {
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en_err(priv, "Fail to attach network rule at location %d.\n",
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cmd->fs.location);
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goto out_free_list;
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}
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loc_rule->id = reg_id;
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memcpy(&loc_rule->flow_spec, &cmd->fs,
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sizeof(struct ethtool_rx_flow_spec));
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out_free_list:
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list_for_each_entry_safe(spec, tmp_spec, &rule.list, list) {
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list_del(&spec->list);
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kfree(spec);
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}
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return err;
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}
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static int mlx4_en_flow_detach(struct net_device *dev,
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struct ethtool_rxnfc *cmd)
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{
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int err = 0;
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struct ethtool_flow_id *rule;
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struct mlx4_en_priv *priv = netdev_priv(dev);
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if (cmd->fs.location >= MAX_NUM_OF_FS_RULES)
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return -EINVAL;
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rule = &priv->ethtool_rules[cmd->fs.location];
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if (!rule->id) {
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err = -ENOENT;
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goto out;
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}
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err = mlx4_flow_detach(priv->mdev->dev, rule->id);
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if (err) {
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en_err(priv, "Fail to detach network rule at location %d. registration id = 0x%llx\n",
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cmd->fs.location, rule->id);
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goto out;
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}
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rule->id = 0;
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memset(&rule->flow_spec, 0, sizeof(struct ethtool_rx_flow_spec));
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out:
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return err;
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}
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static int mlx4_en_get_flow(struct net_device *dev, struct ethtool_rxnfc *cmd,
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int loc)
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{
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int err = 0;
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struct ethtool_flow_id *rule;
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struct mlx4_en_priv *priv = netdev_priv(dev);
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if (loc < 0 || loc >= MAX_NUM_OF_FS_RULES)
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return -EINVAL;
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rule = &priv->ethtool_rules[loc];
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if (rule->id)
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memcpy(&cmd->fs, &rule->flow_spec,
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sizeof(struct ethtool_rx_flow_spec));
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else
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err = -ENOENT;
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return err;
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}
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static int mlx4_en_get_num_flows(struct mlx4_en_priv *priv)
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{
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int i, res = 0;
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for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) {
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if (priv->ethtool_rules[i].id)
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res++;
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}
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return res;
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}
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static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
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u32 *rule_locs)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_dev *mdev = priv->mdev;
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int err = 0;
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int i = 0, priority = 0;
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if ((cmd->cmd == ETHTOOL_GRXCLSRLCNT ||
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cmd->cmd == ETHTOOL_GRXCLSRULE ||
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cmd->cmd == ETHTOOL_GRXCLSRLALL) &&
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mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
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return -EINVAL;
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switch (cmd->cmd) {
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case ETHTOOL_GRXRINGS:
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cmd->data = priv->rx_ring_num;
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break;
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case ETHTOOL_GRXCLSRLCNT:
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cmd->rule_cnt = mlx4_en_get_num_flows(priv);
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break;
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case ETHTOOL_GRXCLSRULE:
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err = mlx4_en_get_flow(dev, cmd, cmd->fs.location);
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break;
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case ETHTOOL_GRXCLSRLALL:
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while ((!err || err == -ENOENT) && priority < cmd->rule_cnt) {
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err = mlx4_en_get_flow(dev, cmd, i);
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if (!err)
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rule_locs[priority++] = i;
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i++;
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}
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err = 0;
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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@ -617,6 +974,30 @@ static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
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return err;
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}
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static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
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{
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int err = 0;
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_dev *mdev = priv->mdev;
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if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
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return -EINVAL;
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switch (cmd->cmd) {
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case ETHTOOL_SRXCLSRLINS:
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err = mlx4_en_flow_replace(dev, cmd);
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break;
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case ETHTOOL_SRXCLSRLDEL:
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err = mlx4_en_flow_detach(dev, cmd);
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break;
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default:
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en_warn(priv, "Unsupported ethtool command. (%d)\n", cmd->cmd);
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return -EINVAL;
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}
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||||
|
||||
return err;
|
||||
}
|
||||
|
||||
const struct ethtool_ops mlx4_en_ethtool_ops = {
|
||||
.get_drvinfo = mlx4_en_get_drvinfo,
|
||||
.get_settings = mlx4_en_get_settings,
|
||||
@ -637,6 +1018,7 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
|
||||
.get_ringparam = mlx4_en_get_ringparam,
|
||||
.set_ringparam = mlx4_en_set_ringparam,
|
||||
.get_rxnfc = mlx4_en_get_rxnfc,
|
||||
.set_rxnfc = mlx4_en_set_rxnfc,
|
||||
.get_rxfh_indir_size = mlx4_en_get_rxfh_indir_size,
|
||||
.get_rxfh_indir = mlx4_en_get_rxfh_indir,
|
||||
.set_rxfh_indir = mlx4_en_set_rxfh_indir,
|
||||
|
||||
@ -75,6 +75,7 @@
|
||||
#define STAMP_SHIFT 31
|
||||
#define STAMP_VAL 0x7fffffff
|
||||
#define STATS_DELAY (HZ / 4)
|
||||
#define MAX_NUM_OF_FS_RULES 256
|
||||
|
||||
/* Typical TSO descriptor with 16 gather entries is 352 bytes... */
|
||||
#define MAX_DESC_SIZE 512
|
||||
@ -435,6 +436,11 @@ struct mlx4_en_frag_info {
|
||||
|
||||
#endif
|
||||
|
||||
struct ethtool_flow_id {
|
||||
struct ethtool_rx_flow_spec flow_spec;
|
||||
u64 id;
|
||||
};
|
||||
|
||||
struct mlx4_en_priv {
|
||||
struct mlx4_en_dev *mdev;
|
||||
struct mlx4_en_port_profile *prof;
|
||||
@ -444,6 +450,7 @@ struct mlx4_en_priv {
|
||||
struct net_device_stats ret_stats;
|
||||
struct mlx4_en_port_state port_state;
|
||||
spinlock_t stats_lock;
|
||||
struct ethtool_flow_id ethtool_rules[MAX_NUM_OF_FS_RULES];
|
||||
|
||||
unsigned long last_moder_packets[MAX_RX_RINGS];
|
||||
unsigned long last_moder_tx_packets;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user