octeontx2-pf: Add TC feature for VFs

This patch adds TC feature for VFs also. When MCAM
rules are allocated for a VF then either TC or ntuple
filters can be used. Below are the commands to use
TC feature for a VF(say lbk0):

devlink dev param set pci/0002:01:00.1 name mcam_count value 16 \
 cmode runtime
ethtool -K lbk0 hw-tc-offload on
ifconfig lbk0 up
tc qdisc add dev lbk0 ingress
tc filter add dev lbk0 parent ffff: protocol ip flower skip_sw \
 dst_mac 98:03:9b:83:aa:12 action police rate 100Mbit burst 5000

Also to modify any fields of the hardware context with
NIX_AQ_INSTOP_WRITE command then corresponding masks of those
fields must be set as per hardware. This was missing in
ingress ratelimiting context. This patch sets those masks also.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 73cd39a..0fa625e 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -5312,6 +5312,7 @@ int rvu_nix_setup_ratelimit_aggr(struct rvu *rvu, u16 pcifunc,
        aq_req.ctype = NIX_AQ_CTYPE_BANDPROF;
        aq_req.op = NIX_AQ_INSTOP_WRITE;
        memcpy(&aq_req.prof, &aq_rsp.prof, sizeof(struct nix_bandprof_s));
+       memset((char *)&aq_req.prof_mask, 0xff, sizeof(struct nix_bandprof_s));
        /* Clear higher layer enable bit in the mid profile, just in case */
        aq_req.prof.hl_en = 0;
        aq_req.prof_mask.hl_en = 1;

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 358e5b2..2c97608 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -1727,6 +1727,56 @@ out:
 }
 EXPORT_SYMBOL(otx2_get_max_mtu);
 
+int otx2_handle_ntuple_tc_features(struct net_device *netdev, netdev_features_t features)
+{
+       netdev_features_t changed = features ^ netdev->features;
+       struct otx2_nic *pfvf = netdev_priv(netdev);
+       bool ntuple = !!(features & NETIF_F_NTUPLE);
+       bool tc = !!(features & NETIF_F_HW_TC);
+
+       if ((changed & NETIF_F_NTUPLE) && !ntuple)
+               otx2_destroy_ntuple_flows(pfvf);
+
+       if ((changed & NETIF_F_NTUPLE) && ntuple) {
+               if (!pfvf->flow_cfg->max_flows) {
+                       netdev_err(netdev,
+                                  "Can't enable NTUPLE, MCAM entries not allocated\n");
+                       return -EINVAL;
+               }
+       }
+
+       if ((changed & NETIF_F_HW_TC) && tc) {
+               if (!pfvf->flow_cfg->max_flows) {
+                       netdev_err(netdev,
+                                  "Can't enable TC, MCAM entries not allocated\n");
+                       return -EINVAL;
+               }
+       }
+
+       if ((changed & NETIF_F_HW_TC) && !tc &&
+           pfvf->flow_cfg && pfvf->flow_cfg->nr_flows) {
+               netdev_err(netdev, "Can't disable TC hardware offload while flows are active\n");
+               return -EBUSY;
+       }
+
+       if ((changed & NETIF_F_NTUPLE) && ntuple &&
+           (netdev->features & NETIF_F_HW_TC) && !(changed & NETIF_F_HW_TC)) {
+               netdev_err(netdev,
+                          "Can't enable NTUPLE when TC is active, disable TC and retry\n");
+               return -EINVAL;
+       }
+
+       if ((changed & NETIF_F_HW_TC) && tc &&
+           (netdev->features & NETIF_F_NTUPLE) && !(changed & NETIF_F_NTUPLE)) {
+               netdev_err(netdev,
+                          "Can't enable TC when NTUPLE is active, disable NTUPLE and retry\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL(otx2_handle_ntuple_tc_features);
+
 #define M(_name, _id, _fn_name, _req_type, _rsp_type)                  \
 int __weak                                                             \
 otx2_mbox_up_handler_ ## _fn_name(struct otx2_nic *pfvf,               \

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index b6be978..7724f17 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -871,6 +871,8 @@ int otx2_enable_rxvlan(struct otx2_nic *pf, bool enable);
 int otx2_install_rxvlan_offload_flow(struct otx2_nic *pfvf);
 bool otx2_xdp_sq_append_pkt(struct otx2_nic *pfvf, u64 iova, int len, u16 qidx);
 u16 otx2_get_max_mtu(struct otx2_nic *pfvf);
+int otx2_handle_ntuple_tc_features(struct net_device *netdev,
+                                  netdev_features_t features);
 /* tc support */
 int otx2_init_tc(struct otx2_nic *nic);
 void otx2_shutdown_tc(struct otx2_nic *nic);

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index ede4df5..a536916 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1863,9 +1863,7 @@ static int otx2_set_features(struct net_device *netdev,
                             netdev_features_t features)
 {
        netdev_features_t changed = features ^ netdev->features;
-       bool ntuple = !!(features & NETIF_F_NTUPLE);
        struct otx2_nic *pf = netdev_priv(netdev);
-       bool tc = !!(features & NETIF_F_HW_TC);
 
        if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev))
                return otx2_cgx_config_loopback(pf,
@@ -1875,46 +1873,7 @@ static int otx2_set_features(struct net_device *netdev,
                return otx2_enable_rxvlan(pf,
                                          features & NETIF_F_HW_VLAN_CTAG_RX);
 
-       if ((changed & NETIF_F_NTUPLE) && !ntuple)
-               otx2_destroy_ntuple_flows(pf);
-
-       if ((changed & NETIF_F_NTUPLE) && ntuple) {
-               if (!pf->flow_cfg->max_flows) {
-                       netdev_err(netdev,
-                                  "Can't enable NTUPLE, MCAM entries not allocated\n");
-                       return -EINVAL;
-               }
-       }
-
-       if ((changed & NETIF_F_HW_TC) && tc) {
-               if (!pf->flow_cfg->max_flows) {
-                       netdev_err(netdev,
-                                  "Can't enable TC, MCAM entries not allocated\n");
-                       return -EINVAL;
-               }
-       }
-
-       if ((changed & NETIF_F_HW_TC) && !tc &&
-           pf->flow_cfg && pf->flow_cfg->nr_flows) {
-               netdev_err(netdev, "Can't disable TC hardware offload while flows are active\n");
-               return -EBUSY;
-       }
-
-       if ((changed & NETIF_F_NTUPLE) && ntuple &&
-           (netdev->features & NETIF_F_HW_TC) && !(changed & NETIF_F_HW_TC)) {
-               netdev_err(netdev,
-                          "Can't enable NTUPLE when TC is active, disable TC and retry\n");
-               return -EINVAL;
-       }
-
-       if ((changed & NETIF_F_HW_TC) && tc &&
-           (netdev->features & NETIF_F_NTUPLE) && !(changed & NETIF_F_NTUPLE)) {
-               netdev_err(netdev,
-                          "Can't enable TC when NTUPLE is active, disable NTUPLE and retry\n");
-               return -EINVAL;
-       }
-
-       return 0;
+       return otx2_handle_ntuple_tc_features(netdev, features);
 }
 
 static void otx2_reset_task(struct work_struct *work)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index 626961a..0593106 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -58,7 +58,7 @@ int otx2_tc_alloc_ent_bitmap(struct otx2_nic *nic)
 {
        struct otx2_tc_info *tc = &nic->tc_info;
 
-       if (!nic->flow_cfg->max_flows || is_otx2_vf(nic->pcifunc))
+       if (!nic->flow_cfg->max_flows)
                return 0;
 
        /* Max flows changed, free the existing bitmap */
@@ -1023,6 +1023,7 @@ int otx2_setup_tc(struct net_device *netdev, enum tc_setup_type type,
                return -EOPNOTSUPP;
        }
 }
+EXPORT_SYMBOL(otx2_setup_tc);
 
 static const struct rhashtable_params tc_flow_ht_params = {
        .head_offset = offsetof(struct otx2_tc_flow, node),
@@ -1052,6 +1053,7 @@ int otx2_init_tc(struct otx2_nic *nic)
        tc->flow_ht_params = tc_flow_ht_params;
        return rhashtable_init(&tc->flow_table, &tc->flow_ht_params);
 }
+EXPORT_SYMBOL(otx2_init_tc);
 
 void otx2_shutdown_tc(struct otx2_nic *nic)
 {
@@ -1060,3 +1062,4 @@ void otx2_shutdown_tc(struct otx2_nic *nic)
        kfree(tc->tc_entries_bitmap);
        rhashtable_destroy(&tc->flow_table);
 }
+EXPORT_SYMBOL(otx2_shutdown_tc);

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 7814249..a232e20 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -472,23 +472,7 @@ static void otx2vf_reset_task(struct work_struct *work)
 static int otx2vf_set_features(struct net_device *netdev,
                               netdev_features_t features)
 {
-       netdev_features_t changed = features ^ netdev->features;
-       bool ntuple_enabled = !!(features & NETIF_F_NTUPLE);
-       struct otx2_nic *vf = netdev_priv(netdev);
-
-       if (changed & NETIF_F_NTUPLE) {
-               if (!ntuple_enabled) {
-                       otx2_mcam_flow_del(vf);
-                       return 0;
-               }
-
-               if (!otx2_get_maxflows(vf->flow_cfg)) {
-                       netdev_err(netdev,
-                                  "Can't enable NTUPLE, MCAM entries not allocated\n");
-                       return -EINVAL;
-               }
-       }
-       return 0;
+       return otx2_handle_ntuple_tc_features(netdev, features);
 }
 
 static const struct net_device_ops otx2vf_netdev_ops = {
@@ -502,6 +486,7 @@ static const struct net_device_ops otx2vf_netdev_ops = {
        .ndo_get_stats64 = otx2_get_stats64,
        .ndo_tx_timeout = otx2_tx_timeout,
        .ndo_eth_ioctl  = otx2_ioctl,
+       .ndo_setup_tc = otx2_setup_tc,
 };
 
 static int otx2_wq_init(struct otx2_nic *vf)
@@ -663,6 +648,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
        netdev->hw_features |= NETIF_F_NTUPLE;
        netdev->hw_features |= NETIF_F_RXALL;
+       netdev->hw_features |= NETIF_F_HW_TC;
 
        netif_set_gso_max_segs(netdev, OTX2_MAX_GSO_SEGS);
        netdev->watchdog_timeo = OTX2_TX_TIMEOUT;
@@ -698,18 +684,24 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
        if (err)
                goto err_unreg_netdev;
 
-       err = otx2_register_dl(vf);
+       err = otx2_init_tc(vf);
        if (err)
                goto err_unreg_netdev;
 
+       err = otx2_register_dl(vf);
+       if (err)
+               goto err_shutdown_tc;
+
 #ifdef CONFIG_DCB
        err = otx2_dcbnl_set_ops(netdev);
        if (err)
-               goto err_unreg_netdev;
+               goto err_shutdown_tc;
 #endif
 
        return 0;
 
+err_shutdown_tc:
+       otx2_shutdown_tc(vf);
 err_unreg_netdev:
        unregister_netdev(netdev);
 err_ptp_destroy: