qede: Add aRFS support
This patch adds support for aRFS for TCP and UDP
protocols with IPv4/IPv6.
Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 8c2baf8..02b305c 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -225,6 +225,9 @@ static struct pci_driver qede_pci_driver = {
static struct qed_eth_cb_ops qede_ll_ops = {
{
+#ifdef CONFIG_RFS_ACCEL
+ .arfs_filter_op = qede_arfs_filter_op,
+#endif
.link_update = qede_link_update,
},
.force_mac = qede_force_mac,
@@ -554,6 +557,9 @@ static const struct net_device_ops qede_netdev_ops = {
.ndo_udp_tunnel_del = qede_udp_tunnel_del,
.ndo_features_check = qede_features_check,
.ndo_xdp = qede_xdp,
+#ifdef CONFIG_RFS_ACCEL
+ .ndo_rx_flow_steer = qede_rx_flow_steer,
+#endif
};
/* -------------------------------------------------------------------------
@@ -603,7 +609,7 @@ static void qede_init_ndev(struct qede_dev *edev)
{
struct net_device *ndev = edev->ndev;
struct pci_dev *pdev = edev->pdev;
- u32 hw_features;
+ netdev_features_t hw_features;
pci_set_drvdata(pdev, ndev);
@@ -629,6 +635,10 @@ static void qede_init_ndev(struct qede_dev *edev)
hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_TSO_ECN | NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_GRE_CSUM;
+
+ if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1)
+ hw_features |= NETIF_F_NTUPLE;
+
ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO_ECN |
NETIF_F_TSO6 | NETIF_F_GSO_GRE |
@@ -798,6 +808,12 @@ static void qede_sp_task(struct work_struct *work)
qed_ops->tunn_config(cdev, &tunn_params);
}
+#ifdef CONFIG_RFS_ACCEL
+ if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
+ if (edev->state == QEDE_STATE_OPEN)
+ qede_process_arfs_filters(edev, false);
+ }
+#endif
__qede_unlock(edev);
}
@@ -808,6 +824,9 @@ static void qede_update_pf_params(struct qed_dev *cdev)
/* 64 rx + 64 tx + 64 XDP */
memset(&pf_params, 0, sizeof(struct qed_pf_params));
pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * 3;
+#ifdef CONFIG_RFS_ACCEL
+ pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
+#endif
qed_ops->common->update_pf_params(cdev, &pf_params);
}
@@ -962,9 +981,8 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
DP_INFO(edev, "Starting qede_remove\n");
- cancel_delayed_work_sync(&edev->sp_task);
-
unregister_netdev(ndev);
+ cancel_delayed_work_sync(&edev->sp_task);
qede_ptp_remove(edev);
@@ -1490,6 +1508,18 @@ static int qede_req_msix_irqs(struct qede_dev *edev)
}
for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
+#ifdef CONFIG_RFS_ACCEL
+ struct qede_fastpath *fp = &edev->fp_array[i];
+
+ if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
+ rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
+ edev->int_info.msix[i].vector);
+ if (rc) {
+ DP_ERR(edev, "Failed to add CPU rmap\n");
+ qede_free_arfs(edev);
+ }
+ }
+#endif
rc = request_irq(edev->int_info.msix[i].vector,
qede_msix_fp_int, 0, edev->fp_array[i].name,
&edev->fp_array[i]);
@@ -1871,7 +1901,12 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
qede_vlan_mark_nonconfigured(edev);
edev->ops->fastpath_stop(edev->cdev);
-
+#ifdef CONFIG_RFS_ACCEL
+ if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
+ qede_poll_for_freeing_arfs_filters(edev);
+ qede_free_arfs(edev);
+ }
+#endif
/* Release the interrupts */
qede_sync_free_irqs(edev);
edev->ops->common->set_fp_int(edev->cdev, 0);
@@ -1923,6 +1958,13 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
if (rc)
goto err2;
+#ifdef CONFIG_RFS_ACCEL
+ if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
+ rc = qede_alloc_arfs(edev);
+ if (rc)
+ DP_NOTICE(edev, "aRFS memory allocation failed\n");
+ }
+#endif
qede_napi_add_enable(edev);
DP_INFO(edev, "Napi added and enabled\n");