]> asedeno.scripts.mit.edu Git - linux.git/commitdiff
net: aquantia: add support of rx-vlan-filter offload
authorDmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Mon, 12 Nov 2018 15:46:09 +0000 (15:46 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 14 Nov 2018 16:48:37 +0000 (08:48 -0800)
Since it uses the same NIC table as rx flow vlan filter therefore
rx-flow vlan filter accepts only vlans that present on the interface
in case of rx-vlan-filter is on.

Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/aquantia/atlantic/aq_filters.c
drivers/net/ethernet/aquantia/atlantic/aq_filters.h
drivers/net/ethernet/aquantia/atlantic/aq_hw.h
drivers/net/ethernet/aquantia/atlantic/aq_main.c
drivers/net/ethernet/aquantia/atlantic/aq_nic.c
drivers/net/ethernet/aquantia/atlantic/aq_nic.h
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

index b987c6717af62c3687a9c5f028540b2575483ef4..f6145e7473b1147f4688104285b18270b5510a55 100644 (file)
@@ -157,6 +157,14 @@ aq_check_approve_fvlan(struct aq_nic_s *aq_nic,
                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]",
@@ -331,26 +339,108 @@ static int aq_add_del_fether(struct aq_nic_s *aq_nic,
                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)
 {
@@ -725,14 +815,62 @@ 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;
 }
index 4c57c26fd3f0dc4df1874d29b668ce649cf69084..c6a08c6585d5426607060f9cadeaedcfaa6b146f 100644 (file)
@@ -27,8 +27,10 @@ int aq_del_rxnfc_rule(struct aq_nic_s *aq_nic, const struct ethtool_rxnfc *cmd);
 int aq_get_rxnfc_rule(struct aq_nic_s *aq_nic, struct ethtool_rxnfc *cmd);
 int aq_get_rxnfc_all_rules(struct aq_nic_s *aq_nic, struct ethtool_rxnfc *cmd,
                           u32 *rule_locs);
+int aq_del_fvlan_by_vlan(struct aq_nic_s *aq_nic, u16 vlan_id);
 int aq_clear_rxnfc_all_rules(struct aq_nic_s *aq_nic);
 int aq_reapply_rxnfc_all_rules(struct aq_nic_s *aq_nic);
 int aq_filters_vlans_update(struct aq_nic_s *aq_nic);
+int aq_filters_vlan_offload_off(struct aq_nic_s *aq_nic);
 
 #endif /* AQ_FILTERS_H */
index b0a48956e22f4b398a0489c0d44bc2c338e96006..81aab73dc22f0fd33d56c7d984094f28133782af 100644 (file)
@@ -27,6 +27,7 @@
 #define AQ_RX_MAX_RXNFC_LOC       AQ_RX_LAST_LOC_FL3L4
 #define AQ_VLAN_MAX_FILTERS   \
                        (AQ_RX_LAST_LOC_FVLANID - AQ_RX_FIRST_LOC_FVLANID + 1U)
+#define AQ_RX_QUEUE_NOT_ASSIGNED   0xFFU
 
 /* NIC H/W capabilities */
 struct aq_hw_caps_s {
index ff15d3388add26e1a31ba08d2a2388dc543ebb5f..2a11c1eefd8fb900cad8d4c958cbcc51998c2f28 100644 (file)
@@ -114,6 +114,13 @@ static int aq_ndev_set_features(struct net_device *ndev,
                                goto err_exit;
                }
        }
+       if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER)) {
+               if (aq_nic->ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) {
+                       err = aq_filters_vlan_offload_off(aq_nic);
+                       if (unlikely(err))
+                               goto err_exit;
+               }
+       }
 
        aq_cfg->features = features;
 
@@ -162,6 +169,35 @@ static void aq_ndev_set_multicast_settings(struct net_device *ndev)
        aq_nic_set_multicast_list(aq_nic, ndev);
 }
 
+static int aq_ndo_vlan_rx_add_vid(struct net_device *ndev, __be16 proto,
+                                 u16 vid)
+{
+       struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+       if (!aq_nic->aq_hw_ops->hw_filter_vlan_set)
+               return -EOPNOTSUPP;
+
+       set_bit(vid, aq_nic->active_vlans);
+
+       return aq_filters_vlans_update(aq_nic);
+}
+
+static int aq_ndo_vlan_rx_kill_vid(struct net_device *ndev, __be16 proto,
+                                  u16 vid)
+{
+       struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+       if (!aq_nic->aq_hw_ops->hw_filter_vlan_set)
+               return -EOPNOTSUPP;
+
+       clear_bit(vid, aq_nic->active_vlans);
+
+       if (-ENOENT == aq_del_fvlan_by_vlan(aq_nic, vid))
+               return aq_filters_vlans_update(aq_nic);
+
+       return 0;
+}
+
 static const struct net_device_ops aq_ndev_ops = {
        .ndo_open = aq_ndev_open,
        .ndo_stop = aq_ndev_close,
@@ -169,5 +205,7 @@ static const struct net_device_ops aq_ndev_ops = {
        .ndo_set_rx_mode = aq_ndev_set_multicast_settings,
        .ndo_change_mtu = aq_ndev_change_mtu,
        .ndo_set_mac_address = aq_ndev_set_mac_address,
-       .ndo_set_features = aq_ndev_set_features
+       .ndo_set_features = aq_ndev_set_features,
+       .ndo_vlan_rx_add_vid = aq_ndo_vlan_rx_add_vid,
+       .ndo_vlan_rx_kill_vid = aq_ndo_vlan_rx_kill_vid,
 };
index 7abdc0952425921330d3639c99824fe5ae7c0e00..279ea58f4a9e392f25d64598c22d90fc91911c78 100644 (file)
@@ -84,8 +84,6 @@ void aq_nic_cfg_start(struct aq_nic_s *self)
 
        cfg->is_lro = AQ_CFG_IS_LRO_DEF;
 
-       cfg->vlan_id = 0U;
-
        aq_nic_rss_init(self, cfg->num_rss_queues);
 
        /*descriptors */
index 6e971bd7f7b97bbab06d67843ba5c488fd2d97b2..8e34c1e49bf2773c41e402664723b879da6f9ad7 100644 (file)
@@ -35,7 +35,6 @@ struct aq_nic_cfg_s {
        u32 mtu;
        u32 flow_control;
        u32 link_speed_msk;
-       u32 vlan_id;
        u32 wol;
        u16 is_mc_list_enabled;
        u16 mc_list_count;
@@ -98,6 +97,8 @@ struct aq_nic_s {
                u32 count;
                u8 ar[AQ_HW_MULTICAST_ADDRESS_MAX][ETH_ALEN];
        } mc_list;
+       /* Bitmask of currently assigned vlans from linux */
+       unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 
        struct pci_dev *pdev;
        unsigned int msix_entry_mask;
index a8777751d09b2f3e4fc592ba64cd1fcd24b3db31..6af7d7f0cdcaea9e34405b84b8c0e59eda2cd73c 100644 (file)
@@ -42,7 +42,8 @@
                        NETIF_F_SG |      \
                        NETIF_F_TSO |     \
                        NETIF_F_LRO |     \
-                       NETIF_F_NTUPLE,   \
+                       NETIF_F_NTUPLE |  \
+                       NETIF_F_HW_VLAN_CTAG_FILTER, \
        .hw_priv_flags = IFF_UNICAST_FLT, \
        .flow_control = true,             \
        .mtu = HW_ATL_B0_MTU_JUMBO,       \
@@ -320,20 +321,11 @@ static int hw_atl_b0_hw_init_rx_path(struct aq_hw_s *self)
        hw_atl_rpf_vlan_outer_etht_set(self, 0x88A8U);
        hw_atl_rpf_vlan_inner_etht_set(self, 0x8100U);
 
-       if (cfg->vlan_id) {
-               hw_atl_rpf_vlan_flr_act_set(self, 1U, 0U);
-               hw_atl_rpf_vlan_id_flr_set(self, 0U, 0U);
-               hw_atl_rpf_vlan_flr_en_set(self, 0U, 0U);
+       hw_atl_rpf_vlan_prom_mode_en_set(self, 1);
 
-               hw_atl_rpf_vlan_accept_untagged_packets_set(self, 1U);
-               hw_atl_rpf_vlan_untagged_act_set(self, 1U);
-
-               hw_atl_rpf_vlan_flr_act_set(self, 1U, 1U);
-               hw_atl_rpf_vlan_id_flr_set(self, cfg->vlan_id, 0U);
-               hw_atl_rpf_vlan_flr_en_set(self, 1U, 1U);
-       } else {
-               hw_atl_rpf_vlan_prom_mode_en_set(self, 1);
-       }
+       // Always accept untagged packets
+       hw_atl_rpf_vlan_accept_untagged_packets_set(self, 1U);
+       hw_atl_rpf_vlan_untagged_act_set(self, 1U);
 
        /* Rx Interrupts */
        hw_atl_rdm_rx_desc_wr_wb_irq_en_set(self, 1U);
@@ -1074,6 +1066,14 @@ static int hw_atl_b0_hw_vlan_set(struct aq_hw_s *self,
        return aq_hw_err_from_flags(self);
 }
 
+static int hw_atl_b0_hw_vlan_ctrl(struct aq_hw_s *self, bool enable)
+{
+       /* set promisc in case of disabing the vland filter */
+       hw_atl_rpf_vlan_prom_mode_en_set(self, !!!enable);
+
+       return aq_hw_err_from_flags(self);
+}
+
 const struct aq_hw_ops hw_atl_ops_b0 = {
        .hw_set_mac_address   = hw_atl_b0_hw_mac_addr_set,
        .hw_init              = hw_atl_b0_hw_init,
@@ -1102,6 +1102,7 @@ const struct aq_hw_ops hw_atl_ops_b0 = {
        .hw_filter_l2_clear          = hw_atl_b0_hw_fl2_clear,
        .hw_filter_l3l4_set          = hw_atl_b0_hw_fl3l4_set,
        .hw_filter_vlan_set          = hw_atl_b0_hw_vlan_set,
+       .hw_filter_vlan_ctrl         = hw_atl_b0_hw_vlan_ctrl,
        .hw_multicast_list_set       = hw_atl_b0_hw_multicast_list_set,
        .hw_interrupt_moderation_set = hw_atl_b0_hw_interrupt_moderation_set,
        .hw_rss_set                  = hw_atl_b0_hw_rss_set,