qede: classification configuration

Add the ability to configure basic classification in driver by
implementing ndo_set_mac_address() and ndo_set_rx_mode().

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 251 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index 424ef4a55828..79479427b6d4 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -87,6 +87,9 @@ struct qede_dev {
         struct qed_update_vport_rss_params      rss_params;
         u16                     q_num_rx_buffers; /* Must be a power of two */
         u16                     q_num_tx_buffers; /* Must be a power of two */
+
+        struct delayed_work             sp_task;
+        unsigned long                   sp_flags;
 };
 
 enum QEDE_STATE {
@@ -184,6 +187,13 @@ struct qede_fastpath {
 
 #define QEDE_CSUM_ERROR                 BIT(0)
 #define QEDE_CSUM_UNNECESSARY           BIT(1)
+
+#define QEDE_SP_RX_MODE         1
+
+union qede_reload_args {
+        u16 mtu;
+};
+
 #define RX_RING_SIZE_POW        13
 #define RX_RING_SIZE            BIT(RX_RING_SIZE_POW)
 #define NUM_RX_BDS_MAX          (RX_RING_SIZE - 1)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index daba118f99ca..0351204317e7 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1030,10 +1030,31 @@ static irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie)
 
 static int qede_open(struct net_device *ndev);
 static int qede_close(struct net_device *ndev);
+static int qede_set_mac_addr(struct net_device *ndev, void *p);
+static void qede_set_rx_mode(struct net_device *ndev);
+static void qede_config_rx_mode(struct net_device *ndev);
+
+static int qede_set_ucast_rx_mac(struct qede_dev *edev,
+                                 enum qed_filter_xcast_params_type opcode,
+                                 unsigned char mac[ETH_ALEN])
+{
+        struct qed_filter_params filter_cmd;
+
+        memset(&filter_cmd, 0, sizeof(filter_cmd));
+        filter_cmd.type = QED_FILTER_TYPE_UCAST;
+        filter_cmd.filter.ucast.type = opcode;
+        filter_cmd.filter.ucast.mac_valid = 1;
+        ether_addr_copy(filter_cmd.filter.ucast.mac, mac);
+
+        return edev->ops->filter_config(edev->cdev, &filter_cmd);
+}
+
 static const struct net_device_ops qede_netdev_ops = {
         .ndo_open = qede_open,
         .ndo_stop = qede_close,
         .ndo_start_xmit = qede_start_xmit,
+        .ndo_set_rx_mode = qede_set_rx_mode,
+        .ndo_set_mac_address = qede_set_mac_addr,
         .ndo_validate_addr = eth_validate_addr,
 };
 
@@ -1198,6 +1219,20 @@ err:
         return -ENOMEM;
 }
 
+static void qede_sp_task(struct work_struct *work)
+{
+        struct qede_dev *edev = container_of(work, struct qede_dev,
+                                             sp_task.work);
+        mutex_lock(&edev->qede_lock);
+
+        if (edev->state == QEDE_STATE_OPEN) {
+                if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
+                        qede_config_rx_mode(edev->ndev);
+        }
+
+        mutex_unlock(&edev->qede_lock);
+}
+
 static void qede_update_pf_params(struct qed_dev *cdev)
 {
         struct qed_pf_params pf_params;
@@ -1269,6 +1304,9 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 
         edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
 
+        INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
+        mutex_init(&edev->qede_lock);
+
         DP_INFO(edev, "Ending successfully qede probe\n");
 
         return 0;
@@ -1306,6 +1344,7 @@ 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);
 
         edev->ops->common->set_power_state(cdev, PCI_D0);
@@ -2036,6 +2075,24 @@ static int qede_start_queues(struct qede_dev *edev)
         return 0;
 }
 
+static int qede_set_mcast_rx_mac(struct qede_dev *edev,
+                                 enum qed_filter_xcast_params_type opcode,
+                                 unsigned char *mac, int num_macs)
+{
+        struct qed_filter_params filter_cmd;
+        int i;
+
+        memset(&filter_cmd, 0, sizeof(filter_cmd));
+        filter_cmd.type = QED_FILTER_TYPE_MCAST;
+        filter_cmd.filter.mcast.type = opcode;
+        filter_cmd.filter.mcast.num = num_macs;
+
+        for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
+                ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);
+
+        return edev->ops->filter_config(edev->cdev, &filter_cmd);
+}
+
 enum qede_unload_mode {
         QEDE_UNLOAD_NORMAL,
 };
@@ -2046,6 +2103,9 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
 
         DP_INFO(edev, "Starting qede unload\n");
 
+        mutex_lock(&edev->qede_lock);
+        edev->state = QEDE_STATE_CLOSED;
+
         /* Close OS Tx */
         netif_tx_disable(edev->ndev);
         netif_carrier_off(edev->ndev);
@@ -2120,6 +2180,9 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
         /* Add primary mac and set Rx filters */
         ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);
 
+        mutex_lock(&edev->qede_lock);
+        edev->state = QEDE_STATE_OPEN;
+        mutex_unlock(&edev->qede_lock);
         DP_INFO(edev, "Ending successfully qede load\n");
 
         return 0;
@@ -2159,3 +2222,181 @@ static int qede_close(struct net_device *ndev)
 
         return 0;
 }
+
+static int qede_set_mac_addr(struct net_device *ndev, void *p)
+{
+        struct qede_dev *edev = netdev_priv(ndev);
+        struct sockaddr *addr = p;
+        int rc;
+
+        ASSERT_RTNL(); /* @@@TBD To be removed */
+
+        DP_INFO(edev, "Set_mac_addr called\n");
+
+        if (!is_valid_ether_addr(addr->sa_data)) {
+                DP_NOTICE(edev, "The MAC address is not valid\n");
+                return -EFAULT;
+        }
+
+        ether_addr_copy(ndev->dev_addr, addr->sa_data);
+
+        if (!netif_running(ndev))  {
+                DP_NOTICE(edev, "The device is currently down\n");
+                return 0;
+        }
+
+        /* Remove the previous primary mac */
+        rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
+                                   edev->primary_mac);
+        if (rc)
+                return rc;
+
+        /* Add MAC filter according to the new unicast HW MAC address */
+        ether_addr_copy(edev->primary_mac, ndev->dev_addr);
+        return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
+                                      edev->primary_mac);
+}
+
+static int
+qede_configure_mcast_filtering(struct net_device *ndev,
+                               enum qed_filter_rx_mode_type *accept_flags)
+{
+        struct qede_dev *edev = netdev_priv(ndev);
+        unsigned char *mc_macs, *temp;
+        struct netdev_hw_addr *ha;
+        int rc = 0, mc_count;
+        size_t size;
+
+        size = 64 * ETH_ALEN;
+
+        mc_macs = kzalloc(size, GFP_KERNEL);
+        if (!mc_macs) {
+                DP_NOTICE(edev,
+                          "Failed to allocate memory for multicast MACs\n");
+                rc = -ENOMEM;
+                goto exit;
+        }
+
+        temp = mc_macs;
+
+        /* Remove all previously configured MAC filters */
+        rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
+                                   mc_macs, 1);
+        if (rc)
+                goto exit;
+
+        netif_addr_lock_bh(ndev);
+
+        mc_count = netdev_mc_count(ndev);
+        if (mc_count < 64) {
+                netdev_for_each_mc_addr(ha, ndev) {
+                        ether_addr_copy(temp, ha->addr);
+                        temp += ETH_ALEN;
+                }
+        }
+
+        netif_addr_unlock_bh(ndev);
+
+        /* Check for all multicast @@@TBD resource allocation */
+        if ((ndev->flags & IFF_ALLMULTI) ||
+            (mc_count > 64)) {
+                if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
+                        *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
+        } else {
+                /* Add all multicast MAC filters */
+                rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
+                                           mc_macs, mc_count);
+        }
+
+exit:
+        kfree(mc_macs);
+        return rc;
+}
+
+static void qede_set_rx_mode(struct net_device *ndev)
+{
+        struct qede_dev *edev = netdev_priv(ndev);
+
+        DP_INFO(edev, "qede_set_rx_mode called\n");
+
+        if (edev->state != QEDE_STATE_OPEN) {
+                DP_INFO(edev,
+                        "qede_set_rx_mode called while interface is down\n");
+        } else {
+                set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
+                schedule_delayed_work(&edev->sp_task, 0);
+        }
+}
+
+/* Must be called with qede_lock held */
+static void qede_config_rx_mode(struct net_device *ndev)
+{
+        enum qed_filter_rx_mode_type accept_flags = QED_FILTER_TYPE_UCAST;
+        struct qede_dev *edev = netdev_priv(ndev);
+        struct qed_filter_params rx_mode;
+        unsigned char *uc_macs, *temp;
+        struct netdev_hw_addr *ha;
+        int rc, uc_count;
+        size_t size;
+
+        netif_addr_lock_bh(ndev);
+
+        uc_count = netdev_uc_count(ndev);
+        size = uc_count * ETH_ALEN;
+
+        uc_macs = kzalloc(size, GFP_ATOMIC);
+        if (!uc_macs) {
+                DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
+                netif_addr_unlock_bh(ndev);
+                return;
+        }
+
+        temp = uc_macs;
+        netdev_for_each_uc_addr(ha, ndev) {
+                ether_addr_copy(temp, ha->addr);
+                temp += ETH_ALEN;
+        }
+
+        netif_addr_unlock_bh(ndev);
+
+        /* Configure the struct for the Rx mode */
+        memset(&rx_mode, 0, sizeof(struct qed_filter_params));
+        rx_mode.type = QED_FILTER_TYPE_RX_MODE;
+
+        /* Remove all previous unicast secondary macs and multicast macs
+         * (configrue / leave the primary mac)
+         */
+        rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
+                                   edev->primary_mac);
+        if (rc)
+                goto out;
+
+        /* Check for promiscuous */
+        if ((ndev->flags & IFF_PROMISC) ||
+            (uc_count > 15)) { /* @@@TBD resource allocation - 1 */
+                accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
+        } else {
+                /* Add MAC filters according to the unicast secondary macs */
+                int i;
+
+                temp = uc_macs;
+                for (i = 0; i < uc_count; i++) {
+                        rc = qede_set_ucast_rx_mac(edev,
+                                                   QED_FILTER_XCAST_TYPE_ADD,
+                                                   temp);
+                        if (rc)
+                                goto out;
+
+                        temp += ETH_ALEN;
+                }
+
+                rc = qede_configure_mcast_filtering(ndev, &accept_flags);
+                if (rc)
+                        goto out;
+        }
+
+        rx_mode.filter.accept_flags = accept_flags;
+        edev->ops->filter_config(edev->cdev, &rx_mode);
+out:
+        kfree(uc_macs);
+}