fm10k: Add netconsole support
This change adds a function called "fm10k_netpoll" that's used to define
"ndo_poll_controller" in "fm10k_netdev_ops". This is required to enable
support for "netconsole" in fm10k.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k.h b/drivers/net/ethernet/intel/fm10k/fm10k.h
index 65e7001..b45f797 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k.h
+++ b/drivers/net/ethernet/intel/fm10k/fm10k.h
@@ -457,6 +457,9 @@
void fm10k_update_stats(struct fm10k_intfc *interface);
void fm10k_service_event_schedule(struct fm10k_intfc *interface);
void fm10k_update_rx_drop_en(struct fm10k_intfc *interface);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void fm10k_netpoll(struct net_device *netdev);
+#endif
/* Netdev */
struct net_device *fm10k_alloc_netdev(void);
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index a7db5e2..702d845 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -1382,6 +1382,9 @@
.ndo_do_ioctl = fm10k_ioctl,
.ndo_dfwd_add_station = fm10k_dfwd_add_station,
.ndo_dfwd_del_station = fm10k_dfwd_del_station,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = fm10k_netpoll,
+#endif
.ndo_features_check = fm10k_features_check,
};
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
index 6fc9965..90d6fae 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
@@ -839,6 +839,28 @@
return IRQ_HANDLED;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/**
+ * fm10k_netpoll - A Polling 'interrupt' handler
+ * @netdev: network interface device structure
+ *
+ * This is used by netconsole to send skbs without having to re-enable
+ * interrupts. It's not called while the normal interrupt routine is executing.
+ **/
+void fm10k_netpoll(struct net_device *netdev)
+{
+ struct fm10k_intfc *interface = netdev_priv(netdev);
+ int i;
+
+ /* if interface is down do nothing */
+ if (test_bit(__FM10K_DOWN, &interface->state))
+ return;
+
+ for (i = 0; i < interface->num_q_vectors; i++)
+ fm10k_msix_clean_rings(0, interface->q_vector[i]);
+}
+
+#endif
#define FM10K_ERR_MSG(type) case (type): error = #type; break
static void fm10k_print_fault(struct fm10k_intfc *interface, int type,
struct fm10k_fault *fault)