diff options
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic/aq_filters.c')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_filters.c | 876 |
1 files changed, 876 insertions, 0 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_filters.c b/drivers/net/ethernet/aquantia/atlantic/aq_filters.c new file mode 100644 index 000000000000..18bc035da850 --- /dev/null +++ b/drivers/net/ethernet/aquantia/atlantic/aq_filters.c @@ -0,0 +1,876 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Copyright (C) 2014-2017 aQuantia Corporation. */ + +/* File aq_filters.c: RX filters related functions. */ + +#include "aq_filters.h" + +static bool __must_check +aq_rule_is_approve(struct ethtool_rx_flow_spec *fsp) +{ + if (fsp->flow_type & FLOW_MAC_EXT) + return false; + + switch (fsp->flow_type & ~FLOW_EXT) { + case ETHER_FLOW: + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case IPV4_FLOW: + case IPV6_FLOW: + return true; + case IP_USER_FLOW: + switch (fsp->h_u.usr_ip4_spec.proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + case IPPROTO_IP: + return true; + default: + return false; + } + case IPV6_USER_FLOW: + switch (fsp->h_u.usr_ip6_spec.l4_proto) { + case IPPROTO_TCP: + case IPPROTO_UDP: + case IPPROTO_SCTP: + case IPPROTO_IP: + return true; + default: + return false; + } + default: + return false; + } + + return false; +} + +static bool __must_check +aq_match_filter(struct ethtool_rx_flow_spec *fsp1, + struct ethtool_rx_flow_spec *fsp2) +{ + if (fsp1->flow_type != fsp2->flow_type || + memcmp(&fsp1->h_u, &fsp2->h_u, sizeof(fsp2->h_u)) || + memcmp(&fsp1->h_ext, &fsp2->h_ext, sizeof(fsp2->h_ext)) || + memcmp(&fsp1->m_u, &fsp2->m_u, sizeof(fsp2->m_u)) || + memcmp(&fsp1->m_ext, &fsp2->m_ext, sizeof(fsp2->m_ext))) + return false; + + return true; +} + +static bool __must_check +aq_rule_already_exists(struct aq_nic_s *aq_nic, + struct ethtool_rx_flow_spec *fsp) +{ + struct aq_rx_filter *rule; + struct hlist_node *aq_node2; + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + if (rule->aq_fsp.location == fsp->location) + continue; + if (aq_match_filter(&rule->aq_fsp, fsp)) { + netdev_err(aq_nic->ndev, + "ethtool: This filter is already set\n"); + return true; + } + } + + return false; +} + +static int aq_check_approve_fl3l4(struct aq_nic_s *aq_nic, + struct aq_hw_rx_fltrs_s *rx_fltrs, + struct ethtool_rx_flow_spec *fsp) +{ + if (fsp->location < AQ_RX_FIRST_LOC_FL3L4 || + fsp->location > AQ_RX_LAST_LOC_FL3L4) { + netdev_err(aq_nic->ndev, + "ethtool: location must be in range [%d, %d]", + AQ_RX_FIRST_LOC_FL3L4, + AQ_RX_LAST_LOC_FL3L4); + return -EINVAL; + } + if (rx_fltrs->fl3l4.is_ipv6 && rx_fltrs->fl3l4.active_ipv4) { + rx_fltrs->fl3l4.is_ipv6 = false; + netdev_err(aq_nic->ndev, + "ethtool: mixing ipv4 and ipv6 is not allowed"); + return -EINVAL; + } else if (!rx_fltrs->fl3l4.is_ipv6 && rx_fltrs->fl3l4.active_ipv6) { + rx_fltrs->fl3l4.is_ipv6 = true; + netdev_err(aq_nic->ndev, + "ethtool: mixing ipv4 and ipv6 is not allowed"); + return -EINVAL; + } else if (rx_fltrs->fl3l4.is_ipv6 && + fsp->location != AQ_RX_FIRST_LOC_FL3L4 + 4 && + fsp->location != AQ_RX_FIRST_LOC_FL3L4) { + netdev_err(aq_nic->ndev, + "ethtool: The specified location for ipv6 must be %d or %d", + AQ_RX_FIRST_LOC_FL3L4, AQ_RX_FIRST_LOC_FL3L4 + 4); + return -EINVAL; + } + + return 0; +} + +static int __must_check +aq_check_approve_fl2(struct aq_nic_s *aq_nic, + struct aq_hw_rx_fltrs_s *rx_fltrs, + struct ethtool_rx_flow_spec *fsp) +{ + if (fsp->location < AQ_RX_FIRST_LOC_FETHERT || + fsp->location > AQ_RX_LAST_LOC_FETHERT) { + netdev_err(aq_nic->ndev, + "ethtool: location must be in range [%d, %d]", + AQ_RX_FIRST_LOC_FETHERT, + AQ_RX_LAST_LOC_FETHERT); + return -EINVAL; + } + + if (be16_to_cpu(fsp->m_ext.vlan_tci) == VLAN_PRIO_MASK && + fsp->m_u.ether_spec.h_proto == 0U) { + netdev_err(aq_nic->ndev, + "ethtool: proto (ether_type) parameter must be specified"); + return -EINVAL; + } + + return 0; +} + +static int __must_check +aq_check_approve_fvlan(struct aq_nic_s *aq_nic, + struct aq_hw_rx_fltrs_s *rx_fltrs, + struct ethtool_rx_flow_spec *fsp) +{ + if (fsp->location < AQ_RX_FIRST_LOC_FVLANID || + fsp->location > AQ_RX_LAST_LOC_FVLANID) { + netdev_err(aq_nic->ndev, + "ethtool: location must be in range [%d, %d]", + AQ_RX_FIRST_LOC_FVLANID, + AQ_RX_LAST_LOC_FVLANID); + return -EINVAL; + } + + if ((aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) && + (!test_bit(be16_to_cpu(fsp->h_ext.vlan_tci), + aq_nic->active_vlans))) { + netdev_err(aq_nic->ndev, + "ethtool: unknown vlan-id specified"); + return -EINVAL; + } + + if (fsp->ring_cookie > aq_nic->aq_nic_cfg.num_rss_queues) { + netdev_err(aq_nic->ndev, + "ethtool: queue number must be in range [0, %d]", + aq_nic->aq_nic_cfg.num_rss_queues - 1); + return -EINVAL; + } + return 0; +} + +static int __must_check +aq_check_filter(struct aq_nic_s *aq_nic, + struct ethtool_rx_flow_spec *fsp) +{ + int err = 0; + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + + if (fsp->flow_type & FLOW_EXT) { + if (be16_to_cpu(fsp->m_ext.vlan_tci) == VLAN_VID_MASK) { + err = aq_check_approve_fvlan(aq_nic, rx_fltrs, fsp); + } else if (be16_to_cpu(fsp->m_ext.vlan_tci) == VLAN_PRIO_MASK) { + err = aq_check_approve_fl2(aq_nic, rx_fltrs, fsp); + } else { + netdev_err(aq_nic->ndev, + "ethtool: invalid vlan mask 0x%x specified", + be16_to_cpu(fsp->m_ext.vlan_tci)); + err = -EINVAL; + } + } else { + switch (fsp->flow_type & ~FLOW_EXT) { + case ETHER_FLOW: + err = aq_check_approve_fl2(aq_nic, rx_fltrs, fsp); + break; + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case IPV4_FLOW: + case IP_USER_FLOW: + rx_fltrs->fl3l4.is_ipv6 = false; + err = aq_check_approve_fl3l4(aq_nic, rx_fltrs, fsp); + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case IPV6_FLOW: + case IPV6_USER_FLOW: + rx_fltrs->fl3l4.is_ipv6 = true; + err = aq_check_approve_fl3l4(aq_nic, rx_fltrs, fsp); + break; + default: + netdev_err(aq_nic->ndev, + "ethtool: unknown flow-type specified"); + err = -EINVAL; + } + } + + return err; +} + +static bool __must_check +aq_rule_is_not_support(struct aq_nic_s *aq_nic, + struct ethtool_rx_flow_spec *fsp) +{ + bool rule_is_not_support = false; + + if (!(aq_nic->ndev->features & NETIF_F_NTUPLE)) { + netdev_err(aq_nic->ndev, + "ethtool: Please, to enable the RX flow control:\n" + "ethtool -K %s ntuple on\n", aq_nic->ndev->name); + rule_is_not_support = true; + } else if (!aq_rule_is_approve(fsp)) { + netdev_err(aq_nic->ndev, + "ethtool: The specified flow type is not supported\n"); + rule_is_not_support = true; + } else if ((fsp->flow_type & ~FLOW_EXT) != ETHER_FLOW && + (fsp->h_u.tcp_ip4_spec.tos || + fsp->h_u.tcp_ip6_spec.tclass)) { + netdev_err(aq_nic->ndev, + "ethtool: The specified tos tclass are not supported\n"); + rule_is_not_support = true; + } else if (fsp->flow_type & FLOW_MAC_EXT) { + netdev_err(aq_nic->ndev, + "ethtool: MAC_EXT is not supported"); + rule_is_not_support = true; + } + + return rule_is_not_support; +} + +static bool __must_check +aq_rule_is_not_correct(struct aq_nic_s *aq_nic, + struct ethtool_rx_flow_spec *fsp) +{ + bool rule_is_not_correct = false; + + if (!aq_nic) { + rule_is_not_correct = true; + } else if (fsp->location > AQ_RX_MAX_RXNFC_LOC) { + netdev_err(aq_nic->ndev, + "ethtool: The specified number %u rule is invalid\n", + fsp->location); + rule_is_not_correct = true; + } else if (aq_check_filter(aq_nic, fsp)) { + rule_is_not_correct = true; + } else if (fsp->ring_cookie != RX_CLS_FLOW_DISC) { + if (fsp->ring_cookie >= aq_nic->aq_nic_cfg.num_rss_queues) { + netdev_err(aq_nic->ndev, + "ethtool: The specified action is invalid.\n" + "Maximum allowable value action is %u.\n", + aq_nic->aq_nic_cfg.num_rss_queues - 1); + rule_is_not_correct = true; + } + } + + return rule_is_not_correct; +} + +static int __must_check +aq_check_rule(struct aq_nic_s *aq_nic, + struct ethtool_rx_flow_spec *fsp) +{ + int err = 0; + + if (aq_rule_is_not_correct(aq_nic, fsp)) + err = -EINVAL; + else if (aq_rule_is_not_support(aq_nic, fsp)) + err = -EOPNOTSUPP; + else if (aq_rule_already_exists(aq_nic, fsp)) + err = -EEXIST; + + return err; +} + +static void aq_set_data_fl2(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, + struct aq_rx_filter_l2 *data, bool add) +{ + const struct ethtool_rx_flow_spec *fsp = &aq_rx_fltr->aq_fsp; + + memset(data, 0, sizeof(*data)); + + data->location = fsp->location - AQ_RX_FIRST_LOC_FETHERT; + + if (fsp->ring_cookie != RX_CLS_FLOW_DISC) + data->queue = fsp->ring_cookie; + else + data->queue = -1; + + data->ethertype = be16_to_cpu(fsp->h_u.ether_spec.h_proto); + data->user_priority_en = be16_to_cpu(fsp->m_ext.vlan_tci) + == VLAN_PRIO_MASK; + data->user_priority = (be16_to_cpu(fsp->h_ext.vlan_tci) + & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; +} + +static int aq_add_del_fether(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, bool add) +{ + struct aq_rx_filter_l2 data; + struct aq_hw_s *aq_hw = aq_nic->aq_hw; + const struct aq_hw_ops *aq_hw_ops = aq_nic->aq_hw_ops; + + aq_set_data_fl2(aq_nic, aq_rx_fltr, &data, add); + + if (unlikely(!aq_hw_ops->hw_filter_l2_set)) + return -EOPNOTSUPP; + if (unlikely(!aq_hw_ops->hw_filter_l2_clear)) + return -EOPNOTSUPP; + + if (add) + return aq_hw_ops->hw_filter_l2_set(aq_hw, &data); + else + return aq_hw_ops->hw_filter_l2_clear(aq_hw, &data); +} + +static bool aq_fvlan_is_busy(struct aq_rx_filter_vlan *aq_vlans, int vlan) +{ + int i; + + for (i = 0; i < AQ_VLAN_MAX_FILTERS; ++i) { + if (aq_vlans[i].enable && + aq_vlans[i].queue != AQ_RX_QUEUE_NOT_ASSIGNED && + aq_vlans[i].vlan_id == vlan) { + return true; + } + } + + return false; +} + +/* Function rebuilds array of vlan filters so that filters with assigned + * queue have a precedence over just vlans on the interface. + */ +static void aq_fvlan_rebuild(struct aq_nic_s *aq_nic, + unsigned long *active_vlans, + struct aq_rx_filter_vlan *aq_vlans) +{ + bool vlan_busy = false; + int vlan = -1; + int i; + + for (i = 0; i < AQ_VLAN_MAX_FILTERS; ++i) { + if (aq_vlans[i].enable && + aq_vlans[i].queue != AQ_RX_QUEUE_NOT_ASSIGNED) + continue; + do { + vlan = find_next_bit(active_vlans, + VLAN_N_VID, + vlan + 1); + if (vlan == VLAN_N_VID) { + aq_vlans[i].enable = 0U; + aq_vlans[i].queue = AQ_RX_QUEUE_NOT_ASSIGNED; + aq_vlans[i].vlan_id = 0; + continue; + } + + vlan_busy = aq_fvlan_is_busy(aq_vlans, vlan); + if (!vlan_busy) { + aq_vlans[i].enable = 1U; + aq_vlans[i].queue = AQ_RX_QUEUE_NOT_ASSIGNED; + aq_vlans[i].vlan_id = vlan; + } + } while (vlan_busy && vlan != VLAN_N_VID); + } +} + +static int aq_set_data_fvlan(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, + struct aq_rx_filter_vlan *aq_vlans, bool add) +{ + const struct ethtool_rx_flow_spec *fsp = &aq_rx_fltr->aq_fsp; + int location = fsp->location - AQ_RX_FIRST_LOC_FVLANID; + int i; + + memset(&aq_vlans[location], 0, sizeof(aq_vlans[location])); + + if (!add) + return 0; + + /* remove vlan if it was in table without queue assignment */ + for (i = 0; i < AQ_VLAN_MAX_FILTERS; ++i) { + if (aq_vlans[i].vlan_id == + (be16_to_cpu(fsp->h_ext.vlan_tci) & VLAN_VID_MASK)) { + aq_vlans[i].enable = false; + } + } + + aq_vlans[location].location = location; + aq_vlans[location].vlan_id = be16_to_cpu(fsp->h_ext.vlan_tci) + & VLAN_VID_MASK; + aq_vlans[location].queue = fsp->ring_cookie & 0x1FU; + aq_vlans[location].enable = 1U; + + return 0; +} + +int aq_del_fvlan_by_vlan(struct aq_nic_s *aq_nic, u16 vlan_id) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct aq_rx_filter *rule = NULL; + struct hlist_node *aq_node2; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + if (be16_to_cpu(rule->aq_fsp.h_ext.vlan_tci) == vlan_id) + break; + } + if (rule && be16_to_cpu(rule->aq_fsp.h_ext.vlan_tci) == vlan_id) { + struct ethtool_rxnfc cmd; + + cmd.fs.location = rule->aq_fsp.location; + return aq_del_rxnfc_rule(aq_nic, &cmd); + } + + return -ENOENT; +} + +static int aq_add_del_fvlan(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, bool add) +{ + const struct aq_hw_ops *aq_hw_ops = aq_nic->aq_hw_ops; + + if (unlikely(!aq_hw_ops->hw_filter_vlan_set)) + return -EOPNOTSUPP; + + aq_set_data_fvlan(aq_nic, + aq_rx_fltr, + aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans, + add); + + return aq_filters_vlans_update(aq_nic); +} + +static int aq_set_data_fl3l4(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, + struct aq_rx_filter_l3l4 *data, bool add) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + const struct ethtool_rx_flow_spec *fsp = &aq_rx_fltr->aq_fsp; + + memset(data, 0, sizeof(*data)); + + data->is_ipv6 = rx_fltrs->fl3l4.is_ipv6; + data->location = HW_ATL_GET_REG_LOCATION_FL3L4(fsp->location); + + if (!add) { + if (!data->is_ipv6) + rx_fltrs->fl3l4.active_ipv4 &= ~BIT(data->location); + else + rx_fltrs->fl3l4.active_ipv6 &= + ~BIT((data->location) / 4); + + return 0; + } + + data->cmd |= HW_ATL_RX_ENABLE_FLTR_L3L4; + + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case TCP_V6_FLOW: + data->cmd |= HW_ATL_RX_ENABLE_CMP_PROT_L4; + break; + case UDP_V4_FLOW: + case UDP_V6_FLOW: + data->cmd |= HW_ATL_RX_UDP; + data->cmd |= HW_ATL_RX_ENABLE_CMP_PROT_L4; + break; + case SCTP_V4_FLOW: + case SCTP_V6_FLOW: + data->cmd |= HW_ATL_RX_SCTP; + data->cmd |= HW_ATL_RX_ENABLE_CMP_PROT_L4; + break; + default: + break; + } + + if (!data->is_ipv6) { + data->ip_src[0] = + ntohl(fsp->h_u.tcp_ip4_spec.ip4src); + data->ip_dst[0] = + ntohl(fsp->h_u.tcp_ip4_spec.ip4dst); + rx_fltrs->fl3l4.active_ipv4 |= BIT(data->location); + } else { + int i; + + rx_fltrs->fl3l4.active_ipv6 |= BIT((data->location) / 4); + for (i = 0; i < HW_ATL_RX_CNT_REG_ADDR_IPV6; ++i) { + data->ip_dst[i] = + ntohl(fsp->h_u.tcp_ip6_spec.ip6dst[i]); + data->ip_src[i] = + ntohl(fsp->h_u.tcp_ip6_spec.ip6src[i]); + } + data->cmd |= HW_ATL_RX_ENABLE_L3_IPV6; + } + if (fsp->flow_type != IP_USER_FLOW && + fsp->flow_type != IPV6_USER_FLOW) { + if (!data->is_ipv6) { + data->p_dst = + ntohs(fsp->h_u.tcp_ip4_spec.pdst); + data->p_src = + ntohs(fsp->h_u.tcp_ip4_spec.psrc); + } else { + data->p_dst = + ntohs(fsp->h_u.tcp_ip6_spec.pdst); + data->p_src = + ntohs(fsp->h_u.tcp_ip6_spec.psrc); + } + } + if (data->ip_src[0] && !data->is_ipv6) + data->cmd |= HW_ATL_RX_ENABLE_CMP_SRC_ADDR_L3; + if (data->ip_dst[0] && !data->is_ipv6) + data->cmd |= HW_ATL_RX_ENABLE_CMP_DEST_ADDR_L3; + if (data->p_dst) + data->cmd |= HW_ATL_RX_ENABLE_CMP_DEST_PORT_L4; + if (data->p_src) + data->cmd |= HW_ATL_RX_ENABLE_CMP_SRC_PORT_L4; + if (fsp->ring_cookie != RX_CLS_FLOW_DISC) { + data->cmd |= HW_ATL_RX_HOST << HW_ATL_RX_ACTION_FL3F4_SHIFT; + data->cmd |= fsp->ring_cookie << HW_ATL_RX_QUEUE_FL3L4_SHIFT; + data->cmd |= HW_ATL_RX_ENABLE_QUEUE_L3L4; + } else { + data->cmd |= HW_ATL_RX_DISCARD << HW_ATL_RX_ACTION_FL3F4_SHIFT; + } + + return 0; +} + +static int aq_set_fl3l4(struct aq_hw_s *aq_hw, + const struct aq_hw_ops *aq_hw_ops, + struct aq_rx_filter_l3l4 *data) +{ + if (unlikely(!aq_hw_ops->hw_filter_l3l4_set)) + return -EOPNOTSUPP; + + return aq_hw_ops->hw_filter_l3l4_set(aq_hw, data); +} + +static int aq_add_del_fl3l4(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, bool add) +{ + const struct aq_hw_ops *aq_hw_ops = aq_nic->aq_hw_ops; + struct aq_hw_s *aq_hw = aq_nic->aq_hw; + struct aq_rx_filter_l3l4 data; + + if (unlikely(aq_rx_fltr->aq_fsp.location < AQ_RX_FIRST_LOC_FL3L4 || + aq_rx_fltr->aq_fsp.location > AQ_RX_LAST_LOC_FL3L4 || + aq_set_data_fl3l4(aq_nic, aq_rx_fltr, &data, add))) + return -EINVAL; + + return aq_set_fl3l4(aq_hw, aq_hw_ops, &data); +} + +static int aq_add_del_rule(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, bool add) +{ + int err = -EINVAL; + + if (aq_rx_fltr->aq_fsp.flow_type & FLOW_EXT) { + if (be16_to_cpu(aq_rx_fltr->aq_fsp.m_ext.vlan_tci) + == VLAN_VID_MASK) { + aq_rx_fltr->type = aq_rx_filter_vlan; + err = aq_add_del_fvlan(aq_nic, aq_rx_fltr, add); + } else if (be16_to_cpu(aq_rx_fltr->aq_fsp.m_ext.vlan_tci) + == VLAN_PRIO_MASK) { + aq_rx_fltr->type = aq_rx_filter_ethertype; + err = aq_add_del_fether(aq_nic, aq_rx_fltr, add); + } + } else { + switch (aq_rx_fltr->aq_fsp.flow_type & ~FLOW_EXT) { + case ETHER_FLOW: + aq_rx_fltr->type = aq_rx_filter_ethertype; + err = aq_add_del_fether(aq_nic, aq_rx_fltr, add); + break; + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case IP_USER_FLOW: + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case IPV6_USER_FLOW: + aq_rx_fltr->type = aq_rx_filter_l3l4; + err = aq_add_del_fl3l4(aq_nic, aq_rx_fltr, add); + break; + default: + err = -EINVAL; + break; + } + } + + return err; +} + +static int aq_update_table_filters(struct aq_nic_s *aq_nic, + struct aq_rx_filter *aq_rx_fltr, u16 index, + struct ethtool_rxnfc *cmd) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct aq_rx_filter *rule = NULL, *parent = NULL; + struct hlist_node *aq_node2; + int err = -EINVAL; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + if (rule->aq_fsp.location >= index) + break; + parent = rule; + } + + if (rule && rule->aq_fsp.location == index) { + err = aq_add_del_rule(aq_nic, rule, false); + hlist_del(&rule->aq_node); + kfree(rule); + --rx_fltrs->active_filters; + } + + if (unlikely(!aq_rx_fltr)) + return err; + + INIT_HLIST_NODE(&aq_rx_fltr->aq_node); + + if (parent) + hlist_add_behind(&aq_rx_fltr->aq_node, &parent->aq_node); + else + hlist_add_head(&aq_rx_fltr->aq_node, &rx_fltrs->filter_list); + + ++rx_fltrs->active_filters; + + return 0; +} + +u16 aq_get_rxnfc_count_all_rules(struct aq_nic_s *aq_nic) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + + return rx_fltrs->active_filters; +} + +struct aq_hw_rx_fltrs_s *aq_get_hw_rx_fltrs(struct aq_nic_s *aq_nic) +{ + return &aq_nic->aq_hw_rx_fltrs; +} + +int aq_add_rxnfc_rule(struct aq_nic_s *aq_nic, const struct ethtool_rxnfc *cmd) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct ethtool_rx_flow_spec *fsp = + (struct ethtool_rx_flow_spec *)&cmd->fs; + struct aq_rx_filter *aq_rx_fltr; + int err = 0; + + err = aq_check_rule(aq_nic, fsp); + if (err) + goto err_exit; + + aq_rx_fltr = kzalloc(sizeof(*aq_rx_fltr), GFP_KERNEL); + if (unlikely(!aq_rx_fltr)) { + err = -ENOMEM; + goto err_exit; + } + + memcpy(&aq_rx_fltr->aq_fsp, fsp, sizeof(*fsp)); + + err = aq_update_table_filters(aq_nic, aq_rx_fltr, fsp->location, NULL); + if (unlikely(err)) + goto err_free; + + err = aq_add_del_rule(aq_nic, aq_rx_fltr, true); + if (unlikely(err)) { + hlist_del(&aq_rx_fltr->aq_node); + --rx_fltrs->active_filters; + goto err_free; + } + + return 0; + +err_free: + kfree(aq_rx_fltr); +err_exit: + return err; +} + +int aq_del_rxnfc_rule(struct aq_nic_s *aq_nic, const struct ethtool_rxnfc *cmd) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct aq_rx_filter *rule = NULL; + struct hlist_node *aq_node2; + int err = -EINVAL; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + if (rule->aq_fsp.location == cmd->fs.location) + break; + } + + if (rule && rule->aq_fsp.location == cmd->fs.location) { + err = aq_add_del_rule(aq_nic, rule, false); + hlist_del(&rule->aq_node); + kfree(rule); + --rx_fltrs->active_filters; + } + return err; +} + +int aq_get_rxnfc_rule(struct aq_nic_s *aq_nic, struct ethtool_rxnfc *cmd) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct ethtool_rx_flow_spec *fsp = + (struct ethtool_rx_flow_spec *)&cmd->fs; + struct aq_rx_filter *rule = NULL; + struct hlist_node *aq_node2; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) + if (fsp->location <= rule->aq_fsp.location) + break; + + if (unlikely(!rule || fsp->location != rule->aq_fsp.location)) + return -EINVAL; + + memcpy(fsp, &rule->aq_fsp, sizeof(*fsp)); + + return 0; +} + +int aq_get_rxnfc_all_rules(struct aq_nic_s *aq_nic, struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct hlist_node *aq_node2; + struct aq_rx_filter *rule; + int count = 0; + + cmd->data = aq_get_rxnfc_count_all_rules(aq_nic); + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + if (unlikely(count == cmd->rule_cnt)) + return -EMSGSIZE; + + rule_locs[count++] = rule->aq_fsp.location; + } + + cmd->rule_cnt = count; + + return 0; +} + +int aq_clear_rxnfc_all_rules(struct aq_nic_s *aq_nic) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct hlist_node *aq_node2; + struct aq_rx_filter *rule; + int err = 0; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + err = aq_add_del_rule(aq_nic, rule, false); + if (err) + goto err_exit; + hlist_del(&rule->aq_node); + kfree(rule); + --rx_fltrs->active_filters; + } + +err_exit: + return err; +} + +int aq_reapply_rxnfc_all_rules(struct aq_nic_s *aq_nic) +{ + struct aq_hw_rx_fltrs_s *rx_fltrs = aq_get_hw_rx_fltrs(aq_nic); + struct hlist_node *aq_node2; + struct aq_rx_filter *rule; + int err = 0; + + hlist_for_each_entry_safe(rule, aq_node2, + &rx_fltrs->filter_list, aq_node) { + err = aq_add_del_rule(aq_nic, rule, true); + if (err) + goto err_exit; + } + +err_exit: + return err; +} + +int aq_filters_vlans_update(struct aq_nic_s *aq_nic) +{ + const struct aq_hw_ops *aq_hw_ops = aq_nic->aq_hw_ops; + struct aq_hw_s *aq_hw = aq_nic->aq_hw; + int hweight = 0; + int err = 0; + int i; + + if (unlikely(!aq_hw_ops->hw_filter_vlan_set)) + return -EOPNOTSUPP; + if (unlikely(!aq_hw_ops->hw_filter_vlan_ctrl)) + return -EOPNOTSUPP; + + aq_fvlan_rebuild(aq_nic, aq_nic->active_vlans, + aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans); + + if (aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) { + for (i = 0; i < BITS_TO_LONGS(VLAN_N_VID); i++) + hweight += hweight_long(aq_nic->active_vlans[i]); + + err = aq_hw_ops->hw_filter_vlan_ctrl(aq_hw, false); + if (err) + return err; + } + + err = aq_hw_ops->hw_filter_vlan_set(aq_hw, + aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans + ); + if (err) + return err; + + if (aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) { + if (hweight < AQ_VLAN_MAX_FILTERS) + err = aq_hw_ops->hw_filter_vlan_ctrl(aq_hw, true); + /* otherwise left in promiscue mode */ + } + + return err; +} + +int aq_filters_vlan_offload_off(struct aq_nic_s *aq_nic) +{ + const struct aq_hw_ops *aq_hw_ops = aq_nic->aq_hw_ops; + struct aq_hw_s *aq_hw = aq_nic->aq_hw; + int err = 0; + + memset(aq_nic->active_vlans, 0, sizeof(aq_nic->active_vlans)); + aq_fvlan_rebuild(aq_nic, aq_nic->active_vlans, + aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans); + + if (unlikely(!aq_hw_ops->hw_filter_vlan_set)) + return -EOPNOTSUPP; + if (unlikely(!aq_hw_ops->hw_filter_vlan_ctrl)) + return -EOPNOTSUPP; + + err = aq_hw_ops->hw_filter_vlan_ctrl(aq_hw, false); + if (err) + return err; + err = aq_hw_ops->hw_filter_vlan_set(aq_hw, + aq_nic->aq_hw_rx_fltrs.fl2.aq_vlans + ); + return err; +} |