*/
#include "fm10k.h"
+#include <linux/vmalloc.h>
+#if IS_ENABLED(CONFIG_VXLAN)
+#include <net/vxlan.h>
+#endif /* CONFIG_VXLAN */
+
+/**
+ * fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @tx_ring: tx descriptor ring (for a specific queue) to setup
+ *
+ * Return 0 on success, negative on failure
+ **/
+int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
+{
+ struct device *dev = tx_ring->dev;
+ int size;
+
+ size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
+
+ tx_ring->tx_buffer = vzalloc(size);
+ if (!tx_ring->tx_buffer)
+ goto err;
+
+ u64_stats_init(&tx_ring->syncp);
+
+ /* round up to nearest 4K */
+ tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc);
+ tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+ tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
+ &tx_ring->dma, GFP_KERNEL);
+ if (!tx_ring->desc)
+ goto err;
+
+ return 0;
+
+err:
+ vfree(tx_ring->tx_buffer);
+ tx_ring->tx_buffer = NULL;
+ return -ENOMEM;
+}
+
+/**
+ * fm10k_setup_all_tx_resources - allocate all queues Tx resources
+ * @interface: board private structure
+ *
+ * If this function returns with an error, then it's possible one or
+ * more of the rings is populated (while the rest are not). It is the
+ * callers duty to clean those orphaned rings.
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface)
+{
+ int i, err = 0;
+
+ for (i = 0; i < interface->num_tx_queues; i++) {
+ err = fm10k_setup_tx_resources(interface->tx_ring[i]);
+ if (!err)
+ continue;
+
+ netif_err(interface, probe, interface->netdev,
+ "Allocation for Tx Queue %u failed\n", i);
+ goto err_setup_tx;
+ }
+
+ return 0;
+err_setup_tx:
+ /* rewind the index freeing the rings as we go */
+ while (i--)
+ fm10k_free_tx_resources(interface->tx_ring[i]);
+ return err;
+}
+
+/**
+ * fm10k_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @rx_ring: rx descriptor ring (for a specific queue) to setup
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring)
+{
+ struct device *dev = rx_ring->dev;
+ int size;
+
+ size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
+
+ rx_ring->rx_buffer = vzalloc(size);
+ if (!rx_ring->rx_buffer)
+ goto err;
+
+ u64_stats_init(&rx_ring->syncp);
+
+ /* Round up to nearest 4K */
+ rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc);
+ rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+ rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
+ &rx_ring->dma, GFP_KERNEL);
+ if (!rx_ring->desc)
+ goto err;
+
+ return 0;
+err:
+ vfree(rx_ring->rx_buffer);
+ rx_ring->rx_buffer = NULL;
+ return -ENOMEM;
+}
+
+/**
+ * fm10k_setup_all_rx_resources - allocate all queues Rx resources
+ * @interface: board private structure
+ *
+ * If this function returns with an error, then it's possible one or
+ * more of the rings is populated (while the rest are not). It is the
+ * callers duty to clean those orphaned rings.
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface)
+{
+ int i, err = 0;
+
+ for (i = 0; i < interface->num_rx_queues; i++) {
+ err = fm10k_setup_rx_resources(interface->rx_ring[i]);
+ if (!err)
+ continue;
+
+ netif_err(interface, probe, interface->netdev,
+ "Allocation for Rx Queue %u failed\n", i);
+ goto err_setup_rx;
+ }
+
+ return 0;
+err_setup_rx:
+ /* rewind the index freeing the rings as we go */
+ while (i--)
+ fm10k_free_rx_resources(interface->rx_ring[i]);
+ return err;
+}
+
+void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *ring,
+ struct fm10k_tx_buffer *tx_buffer)
+{
+ if (tx_buffer->skb) {
+ dev_kfree_skb_any(tx_buffer->skb);
+ if (dma_unmap_len(tx_buffer, len))
+ dma_unmap_single(ring->dev,
+ dma_unmap_addr(tx_buffer, dma),
+ dma_unmap_len(tx_buffer, len),
+ DMA_TO_DEVICE);
+ } else if (dma_unmap_len(tx_buffer, len)) {
+ dma_unmap_page(ring->dev,
+ dma_unmap_addr(tx_buffer, dma),
+ dma_unmap_len(tx_buffer, len),
+ DMA_TO_DEVICE);
+ }
+ tx_buffer->next_to_watch = NULL;
+ tx_buffer->skb = NULL;
+ dma_unmap_len_set(tx_buffer, len, 0);
+ /* tx_buffer must be completely set up in the transmit path */
+}
+
+/**
+ * fm10k_clean_tx_ring - Free Tx Buffers
+ * @tx_ring: ring to be cleaned
+ **/
+static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring)
+{
+ struct fm10k_tx_buffer *tx_buffer;
+ unsigned long size;
+ u16 i;
+
+ /* ring already cleared, nothing to do */
+ if (!tx_ring->tx_buffer)
+ return;
+
+ /* Free all the Tx ring sk_buffs */
+ for (i = 0; i < tx_ring->count; i++) {
+ tx_buffer = &tx_ring->tx_buffer[i];
+ fm10k_unmap_and_free_tx_resource(tx_ring, tx_buffer);
+ }
+
+ /* reset BQL values */
+ netdev_tx_reset_queue(txring_txq(tx_ring));
+
+ size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
+ memset(tx_ring->tx_buffer, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(tx_ring->desc, 0, tx_ring->size);
+}
+
+/**
+ * fm10k_free_tx_resources - Free Tx Resources per Queue
+ * @tx_ring: Tx descriptor ring for a specific queue
+ *
+ * Free all transmit software resources
+ **/
+void fm10k_free_tx_resources(struct fm10k_ring *tx_ring)
+{
+ fm10k_clean_tx_ring(tx_ring);
+
+ vfree(tx_ring->tx_buffer);
+ tx_ring->tx_buffer = NULL;
+
+ /* if not set, then don't free */
+ if (!tx_ring->desc)
+ return;
+
+ dma_free_coherent(tx_ring->dev, tx_ring->size,
+ tx_ring->desc, tx_ring->dma);
+ tx_ring->desc = NULL;
+}
+
+/**
+ * fm10k_clean_all_tx_rings - Free Tx Buffers for all queues
+ * @interface: board private structure
+ **/
+void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface)
+{
+ int i;
+
+ for (i = 0; i < interface->num_tx_queues; i++)
+ fm10k_clean_tx_ring(interface->tx_ring[i]);
+
+ /* remove any stale timestamp buffers and free them */
+ skb_queue_purge(&interface->ts_tx_skb_queue);
+}
+
+/**
+ * fm10k_free_all_tx_resources - Free Tx Resources for All Queues
+ * @interface: board private structure
+ *
+ * Free all transmit software resources
+ **/
+static void fm10k_free_all_tx_resources(struct fm10k_intfc *interface)
+{
+ int i = interface->num_tx_queues;
+
+ while (i--)
+ fm10k_free_tx_resources(interface->tx_ring[i]);
+}
+
+/**
+ * fm10k_clean_rx_ring - Free Rx Buffers per Queue
+ * @rx_ring: ring to free buffers from
+ **/
+static void fm10k_clean_rx_ring(struct fm10k_ring *rx_ring)
+{
+ unsigned long size;
+ u16 i;
+
+ if (!rx_ring->rx_buffer)
+ return;
+
+ if (rx_ring->skb)
+ dev_kfree_skb(rx_ring->skb);
+ rx_ring->skb = NULL;
+
+ /* Free all the Rx ring sk_buffs */
+ for (i = 0; i < rx_ring->count; i++) {
+ struct fm10k_rx_buffer *buffer = &rx_ring->rx_buffer[i];
+ /* clean-up will only set page pointer to NULL */
+ if (!buffer->page)
+ continue;
+
+ dma_unmap_page(rx_ring->dev, buffer->dma,
+ PAGE_SIZE, DMA_FROM_DEVICE);
+ __free_page(buffer->page);
+
+ buffer->page = NULL;
+ }
+
+ size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
+ memset(rx_ring->rx_buffer, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(rx_ring->desc, 0, rx_ring->size);
+
+ rx_ring->next_to_alloc = 0;
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+}
+
+/**
+ * fm10k_free_rx_resources - Free Rx Resources
+ * @rx_ring: ring to clean the resources from
+ *
+ * Free all receive software resources
+ **/
+void fm10k_free_rx_resources(struct fm10k_ring *rx_ring)
+{
+ fm10k_clean_rx_ring(rx_ring);
+
+ vfree(rx_ring->rx_buffer);
+ rx_ring->rx_buffer = NULL;
+
+ /* if not set, then don't free */
+ if (!rx_ring->desc)
+ return;
+
+ dma_free_coherent(rx_ring->dev, rx_ring->size,
+ rx_ring->desc, rx_ring->dma);
+
+ rx_ring->desc = NULL;
+}
+
+/**
+ * fm10k_clean_all_rx_rings - Free Rx Buffers for all queues
+ * @interface: board private structure
+ **/
+void fm10k_clean_all_rx_rings(struct fm10k_intfc *interface)
+{
+ int i;
+
+ for (i = 0; i < interface->num_rx_queues; i++)
+ fm10k_clean_rx_ring(interface->rx_ring[i]);
+}
+
+/**
+ * fm10k_free_all_rx_resources - Free Rx Resources for All Queues
+ * @interface: board private structure
+ *
+ * Free all receive software resources
+ **/
+static void fm10k_free_all_rx_resources(struct fm10k_intfc *interface)
+{
+ int i = interface->num_rx_queues;
+
+ while (i--)
+ fm10k_free_rx_resources(interface->rx_ring[i]);
+}
/**
* fm10k_request_glort_range - Request GLORTs for use in configuring rules
if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
return;
- interface->glort_count = mask + 1;
+ /* we support 3 possible GLORT configurations.
+ * 1: VFs consume all but the last 1
+ * 2: VFs and PF split glorts with possible gap between
+ * 3: VFs allocated first 64, all others belong to PF
+ */
+ if (mask <= hw->iov.total_vfs) {
+ interface->glort_count = 1;
+ interface->glort += mask;
+ } else if (mask < 64) {
+ interface->glort_count = (mask + 1) / 2;
+ interface->glort += interface->glort_count;
+ } else {
+ interface->glort_count = mask - 63;
+ interface->glort += 64;
+ }
+}
+
+/**
+ * fm10k_del_vxlan_port_all
+ * @interface: board private structure
+ *
+ * This function frees the entire vxlan_port list
+ **/
+static void fm10k_del_vxlan_port_all(struct fm10k_intfc *interface)
+{
+ struct fm10k_vxlan_port *vxlan_port;
+
+ /* flush all entries from list */
+ vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+ struct fm10k_vxlan_port, list);
+ while (vxlan_port) {
+ list_del(&vxlan_port->list);
+ kfree(vxlan_port);
+ vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+ struct fm10k_vxlan_port,
+ list);
+ }
+}
+
+/**
+ * fm10k_restore_vxlan_port
+ * @interface: board private structure
+ *
+ * This function restores the value in the tunnel_cfg register after reset
+ **/
+static void fm10k_restore_vxlan_port(struct fm10k_intfc *interface)
+{
+ struct fm10k_hw *hw = &interface->hw;
+ struct fm10k_vxlan_port *vxlan_port;
+
+ /* only the PF supports configuring tunnels */
+ if (hw->mac.type != fm10k_mac_pf)
+ return;
+
+ vxlan_port = list_first_entry_or_null(&interface->vxlan_port,
+ struct fm10k_vxlan_port, list);
+
+ /* restore tunnel configuration register */
+ fm10k_write_reg(hw, FM10K_TUNNEL_CFG,
+ (vxlan_port ? ntohs(vxlan_port->port) : 0) |
+ (ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT));
+}
+
+/**
+ * fm10k_add_vxlan_port
+ * @netdev: network interface device structure
+ * @sa_family: Address family of new port
+ * @port: port number used for VXLAN
+ *
+ * This funciton is called when a new VXLAN interface has added a new port
+ * number to the range that is currently in use for VXLAN. The new port
+ * number is always added to the tail so that the port number list should
+ * match the order in which the ports were allocated. The head of the list
+ * is always used as the VXLAN port number for offloads.
+ **/
+static void fm10k_add_vxlan_port(struct net_device *dev,
+ sa_family_t sa_family, __be16 port) {
+ struct fm10k_intfc *interface = netdev_priv(dev);
+ struct fm10k_vxlan_port *vxlan_port;
+
+ /* only the PF supports configuring tunnels */
+ if (interface->hw.mac.type != fm10k_mac_pf)
+ return;
+
+ /* existing ports are pulled out so our new entry is always last */
+ fm10k_vxlan_port_for_each(vxlan_port, interface) {
+ if ((vxlan_port->port == port) &&
+ (vxlan_port->sa_family == sa_family)) {
+ list_del(&vxlan_port->list);
+ goto insert_tail;
+ }
+ }
+
+ /* allocate memory to track ports */
+ vxlan_port = kmalloc(sizeof(*vxlan_port), GFP_ATOMIC);
+ if (!vxlan_port)
+ return;
+ vxlan_port->port = port;
+ vxlan_port->sa_family = sa_family;
+
+insert_tail:
+ /* add new port value to list */
+ list_add_tail(&vxlan_port->list, &interface->vxlan_port);
+
+ fm10k_restore_vxlan_port(interface);
+}
+
+/**
+ * fm10k_del_vxlan_port
+ * @netdev: network interface device structure
+ * @sa_family: Address family of freed port
+ * @port: port number used for VXLAN
+ *
+ * This funciton is called when a new VXLAN interface has freed a port
+ * number from the range that is currently in use for VXLAN. The freed
+ * port is removed from the list and the new head is used to determine
+ * the port number for offloads.
+ **/
+static void fm10k_del_vxlan_port(struct net_device *dev,
+ sa_family_t sa_family, __be16 port) {
+ struct fm10k_intfc *interface = netdev_priv(dev);
+ struct fm10k_vxlan_port *vxlan_port;
+
+ if (interface->hw.mac.type != fm10k_mac_pf)
+ return;
+
+ /* find the port in the list and free it */
+ fm10k_vxlan_port_for_each(vxlan_port, interface) {
+ if ((vxlan_port->port == port) &&
+ (vxlan_port->sa_family == sa_family)) {
+ list_del(&vxlan_port->list);
+ kfree(vxlan_port);
+ break;
+ }
+ }
+
+ fm10k_restore_vxlan_port(interface);
}
/**
struct fm10k_intfc *interface = netdev_priv(netdev);
int err;
+ /* allocate transmit descriptors */
+ err = fm10k_setup_all_tx_resources(interface);
+ if (err)
+ goto err_setup_tx;
+
+ /* allocate receive descriptors */
+ err = fm10k_setup_all_rx_resources(interface);
+ if (err)
+ goto err_setup_rx;
+
/* allocate interrupt resources */
err = fm10k_qv_request_irq(interface);
if (err)
/* setup GLORT assignment for this port */
fm10k_request_glort_range(interface);
+ /* Notify the stack of the actual queue counts */
+ err = netif_set_real_num_tx_queues(netdev,
+ interface->num_tx_queues);
+ if (err)
+ goto err_set_queues;
+
+ err = netif_set_real_num_rx_queues(netdev,
+ interface->num_rx_queues);
+ if (err)
+ goto err_set_queues;
+
+#if IS_ENABLED(CONFIG_VXLAN)
+ /* update VXLAN port configuration */
+ vxlan_get_rx_port(netdev);
+
+#endif
fm10k_up(interface);
return 0;
+err_set_queues:
+ fm10k_qv_free_irq(interface);
err_req_irq:
+ fm10k_free_all_rx_resources(interface);
+err_setup_rx:
+ fm10k_free_all_tx_resources(interface);
+err_setup_tx:
return err;
}
fm10k_qv_free_irq(interface);
+ fm10k_del_vxlan_port_all(interface);
+
+ fm10k_free_all_tx_resources(interface);
+ fm10k_free_all_rx_resources(interface);
+
return 0;
}
static netdev_tx_t fm10k_xmit_frame(struct sk_buff *skb, struct net_device *dev)
{
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
+ struct fm10k_intfc *interface = netdev_priv(dev);
+ unsigned int r_idx = skb->queue_mapping;
+ int err;
+
+ if ((skb->protocol == htons(ETH_P_8021Q)) &&
+ !vlan_tx_tag_present(skb)) {
+ /* FM10K only supports hardware tagging, any tags in frame
+ * are considered 2nd level or "outer" tags
+ */
+ struct vlan_hdr *vhdr;
+ __be16 proto;
+
+ /* make sure skb is not shared */
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return NETDEV_TX_OK;
+
+ /* make sure there is enough room to move the ethernet header */
+ if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
+ return NETDEV_TX_OK;
+
+ /* verify the skb head is not shared */
+ err = skb_cow_head(skb, 0);
+ if (err)
+ return NETDEV_TX_OK;
+
+ /* locate vlan header */
+ vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);
+
+ /* pull the 2 key pieces of data out of it */
+ __vlan_hwaccel_put_tag(skb,
+ htons(ETH_P_8021Q),
+ ntohs(vhdr->h_vlan_TCI));
+ proto = vhdr->h_vlan_encapsulated_proto;
+ skb->protocol = (ntohs(proto) >= 1536) ? proto :
+ htons(ETH_P_802_2);
+
+ /* squash it by moving the ethernet addresses up 4 bytes */
+ memmove(skb->data + VLAN_HLEN, skb->data, 12);
+ __skb_pull(skb, VLAN_HLEN);
+ skb_reset_mac_header(skb);
+ }
+
+ /* The minimum packet size for a single buffer is 17B so pad the skb
+ * in order to meet this minimum size requirement.
+ */
+ if (unlikely(skb->len < 17)) {
+ int pad_len = 17 - skb->len;
+
+ if (skb_pad(skb, pad_len))
+ return NETDEV_TX_OK;
+ __skb_put(skb, pad_len);
+ }
+
+ /* prepare packet for hardware time stamping */
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
+ fm10k_ts_tx_enqueue(interface, skb);
+
+ if (r_idx >= interface->num_tx_queues)
+ r_idx %= interface->num_tx_queues;
+
+ err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]);
+
+ return err;
}
static int fm10k_change_mtu(struct net_device *dev, int new_mtu)
return 0;
}
+/**
+ * fm10k_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void fm10k_tx_timeout(struct net_device *netdev)
+{
+ struct fm10k_intfc *interface = netdev_priv(netdev);
+ bool real_tx_hang = false;
+ int i;
+
+#define TX_TIMEO_LIMIT 16000
+ for (i = 0; i < interface->num_tx_queues; i++) {
+ struct fm10k_ring *tx_ring = interface->tx_ring[i];
+
+ if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring))
+ real_tx_hang = true;
+ }
+
+ if (real_tx_hang) {
+ fm10k_tx_timeout_reset(interface);
+ } else {
+ netif_info(interface, drv, netdev,
+ "Fake Tx hang detected with timeout of %d seconds\n",
+ netdev->watchdog_timeo/HZ);
+
+ /* fake Tx hang - increase the kernel timeout */
+ if (netdev->watchdog_timeo < TX_TIMEO_LIMIT)
+ netdev->watchdog_timeo *= 2;
+ }
+}
+
static int fm10k_uc_vlan_unsync(struct net_device *netdev,
const unsigned char *uc_addr)
{
int xcast_mode;
u16 vid, glort;
+ /* restore our address if perm_addr is set */
+ if (hw->mac.type == fm10k_mac_vf) {
+ if (is_valid_ether_addr(hw->mac.perm_addr)) {
+ ether_addr_copy(hw->mac.addr, hw->mac.perm_addr);
+ ether_addr_copy(netdev->perm_addr, hw->mac.perm_addr);
+ ether_addr_copy(netdev->dev_addr, hw->mac.perm_addr);
+ netdev->addr_assign_type &= ~NET_ADDR_RANDOM;
+ }
+
+ if (hw->mac.vlan_override)
+ netdev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+ else
+ netdev->features |= NETIF_F_HW_VLAN_CTAG_RX;
+ }
+
/* record glort for this interface */
glort = interface->glort;
/* record updated xcast mode state */
interface->xcast_mode = xcast_mode;
+
+ /* Restore tunnel configuration */
+ fm10k_restore_vxlan_port(interface);
}
void fm10k_reset_rx_state(struct fm10k_intfc *interface)
__dev_mc_unsync(netdev, NULL);
}
+/**
+ * fm10k_get_stats64 - Get System Network Statistics
+ * @netdev: network interface device structure
+ * @stats: storage space for 64bit statistics
+ *
+ * Returns 64bit statistics, for use in the ndo_get_stats64 callback. This
+ * function replaces fm10k_get_stats for kernels which support it.
+ */
+static struct rtnl_link_stats64 *fm10k_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct fm10k_intfc *interface = netdev_priv(netdev);
+ struct fm10k_ring *ring;
+ unsigned int start, i;
+ u64 bytes, packets;
+
+ rcu_read_lock();
+
+ for (i = 0; i < interface->num_rx_queues; i++) {
+ ring = ACCESS_ONCE(interface->rx_ring[i]);
+
+ if (!ring)
+ continue;
+
+ do {
+ start = u64_stats_fetch_begin_irq(&ring->syncp);
+ packets = ring->stats.packets;
+ bytes = ring->stats.bytes;
+ } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+
+ stats->rx_packets += packets;
+ stats->rx_bytes += bytes;
+ }
+
+ for (i = 0; i < interface->num_tx_queues; i++) {
+ ring = ACCESS_ONCE(interface->rx_ring[i]);
+
+ if (!ring)
+ continue;
+
+ do {
+ start = u64_stats_fetch_begin_irq(&ring->syncp);
+ packets = ring->stats.packets;
+ bytes = ring->stats.bytes;
+ } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+
+ stats->tx_packets += packets;
+ stats->tx_bytes += bytes;
+ }
+
+ rcu_read_unlock();
+
+ /* following stats updated by fm10k_service_task() */
+ stats->rx_missed_errors = netdev->stats.rx_missed_errors;
+
+ return stats;
+}
+
+int fm10k_setup_tc(struct net_device *dev, u8 tc)
+{
+ struct fm10k_intfc *interface = netdev_priv(dev);
+
+ /* Currently only the PF supports priority classes */
+ if (tc && (interface->hw.mac.type != fm10k_mac_pf))
+ return -EINVAL;
+
+ /* Hardware supports up to 8 traffic classes */
+ if (tc > 8)
+ return -EINVAL;
+
+ /* Hardware has to reinitialize queues to match packet
+ * buffer alignment. Unfortunately, the hardware is not
+ * flexible enough to do this dynamically.
+ */
+ if (netif_running(dev))
+ fm10k_close(dev);
+
+ fm10k_mbx_free_irq(interface);
+
+ fm10k_clear_queueing_scheme(interface);
+
+ /* we expect the prio_tc map to be repopulated later */
+ netdev_reset_tc(dev);
+ netdev_set_num_tc(dev, tc);
+
+ fm10k_init_queueing_scheme(interface);
+
+ fm10k_mbx_request_irq(interface);
+
+ if (netif_running(dev))
+ fm10k_open(dev);
+
+ /* flag to indicate SWPRI has yet to be updated */
+ interface->flags |= FM10K_FLAG_SWPRI_CONFIG;
+
+ return 0;
+}
+
+static int fm10k_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ switch (cmd) {
+ case SIOCGHWTSTAMP:
+ return fm10k_get_ts_config(netdev, ifr);
+ case SIOCSHWTSTAMP:
+ return fm10k_set_ts_config(netdev, ifr);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void fm10k_assign_l2_accel(struct fm10k_intfc *interface,
+ struct fm10k_l2_accel *l2_accel)
+{
+ struct fm10k_ring *ring;
+ int i;
+
+ for (i = 0; i < interface->num_rx_queues; i++) {
+ ring = interface->rx_ring[i];
+ rcu_assign_pointer(ring->l2_accel, l2_accel);
+ }
+
+ interface->l2_accel = l2_accel;
+}
+
+static void *fm10k_dfwd_add_station(struct net_device *dev,
+ struct net_device *sdev)
+{
+ struct fm10k_intfc *interface = netdev_priv(dev);
+ struct fm10k_l2_accel *l2_accel = interface->l2_accel;
+ struct fm10k_l2_accel *old_l2_accel = NULL;
+ struct fm10k_dglort_cfg dglort = { 0 };
+ struct fm10k_hw *hw = &interface->hw;
+ int size = 0, i;
+ u16 glort;
+
+ /* allocate l2 accel structure if it is not available */
+ if (!l2_accel) {
+ /* verify there is enough free GLORTs to support l2_accel */
+ if (interface->glort_count < 7)
+ return ERR_PTR(-EBUSY);
+
+ size = offsetof(struct fm10k_l2_accel, macvlan[7]);
+ l2_accel = kzalloc(size, GFP_KERNEL);
+ if (!l2_accel)
+ return ERR_PTR(-ENOMEM);
+
+ l2_accel->size = 7;
+ l2_accel->dglort = interface->glort;
+
+ /* update pointers */
+ fm10k_assign_l2_accel(interface, l2_accel);
+ /* do not expand if we are at our limit */
+ } else if ((l2_accel->count == FM10K_MAX_STATIONS) ||
+ (l2_accel->count == (interface->glort_count - 1))) {
+ return ERR_PTR(-EBUSY);
+ /* expand if we have hit the size limit */
+ } else if (l2_accel->count == l2_accel->size) {
+ old_l2_accel = l2_accel;
+ size = offsetof(struct fm10k_l2_accel,
+ macvlan[(l2_accel->size * 2) + 1]);
+ l2_accel = kzalloc(size, GFP_KERNEL);
+ if (!l2_accel)
+ return ERR_PTR(-ENOMEM);
+
+ memcpy(l2_accel, old_l2_accel,
+ offsetof(struct fm10k_l2_accel,
+ macvlan[old_l2_accel->size]));
+
+ l2_accel->size = (old_l2_accel->size * 2) + 1;
+
+ /* update pointers */
+ fm10k_assign_l2_accel(interface, l2_accel);
+ kfree_rcu(old_l2_accel, rcu);
+ }
+
+ /* add macvlan to accel table, and record GLORT for position */
+ for (i = 0; i < l2_accel->size; i++) {
+ if (!l2_accel->macvlan[i])
+ break;
+ }
+
+ /* record station */
+ l2_accel->macvlan[i] = sdev;
+ l2_accel->count++;
+
+ /* configure default DGLORT mapping for RSS/DCB */
+ dglort.idx = fm10k_dglort_pf_rss;
+ dglort.inner_rss = 1;
+ dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
+ dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
+ dglort.glort = interface->glort;
+ dglort.shared_l = fls(l2_accel->size);
+ hw->mac.ops.configure_dglort_map(hw, &dglort);
+
+ /* Add rules for this specific dglort to the switch */
+ fm10k_mbx_lock(interface);
+
+ glort = l2_accel->dglort + 1 + i;
+ hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_MULTI);
+ hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, true, 0);
+
+ fm10k_mbx_unlock(interface);
+
+ return sdev;
+}
+
+static void fm10k_dfwd_del_station(struct net_device *dev, void *priv)
+{
+ struct fm10k_intfc *interface = netdev_priv(dev);
+ struct fm10k_l2_accel *l2_accel = ACCESS_ONCE(interface->l2_accel);
+ struct fm10k_dglort_cfg dglort = { 0 };
+ struct fm10k_hw *hw = &interface->hw;
+ struct net_device *sdev = priv;
+ int i;
+ u16 glort;
+
+ if (!l2_accel)
+ return;
+
+ /* search table for matching interface */
+ for (i = 0; i < l2_accel->size; i++) {
+ if (l2_accel->macvlan[i] == sdev)
+ break;
+ }
+
+ /* exit if macvlan not found */
+ if (i == l2_accel->size)
+ return;
+
+ /* Remove any rules specific to this dglort */
+ fm10k_mbx_lock(interface);
+
+ glort = l2_accel->dglort + 1 + i;
+ hw->mac.ops.update_xcast_mode(hw, glort, FM10K_XCAST_MODE_NONE);
+ hw->mac.ops.update_uc_addr(hw, glort, sdev->dev_addr, 0, false, 0);
+
+ fm10k_mbx_unlock(interface);
+
+ /* record removal */
+ l2_accel->macvlan[i] = NULL;
+ l2_accel->count--;
+
+ /* configure default DGLORT mapping for RSS/DCB */
+ dglort.idx = fm10k_dglort_pf_rss;
+ dglort.inner_rss = 1;
+ dglort.rss_l = fls(interface->ring_feature[RING_F_RSS].mask);
+ dglort.pc_l = fls(interface->ring_feature[RING_F_QOS].mask);
+ dglort.glort = interface->glort;
+ if (l2_accel)
+ dglort.shared_l = fls(l2_accel->size);
+ hw->mac.ops.configure_dglort_map(hw, &dglort);
+
+ /* If table is empty remove it */
+ if (l2_accel->count == 0) {
+ fm10k_assign_l2_accel(interface, NULL);
+ kfree_rcu(l2_accel, rcu);
+ }
+}
+
static const struct net_device_ops fm10k_netdev_ops = {
.ndo_open = fm10k_open,
.ndo_stop = fm10k_close,
.ndo_start_xmit = fm10k_xmit_frame,
.ndo_set_mac_address = fm10k_set_mac,
.ndo_change_mtu = fm10k_change_mtu,
+ .ndo_tx_timeout = fm10k_tx_timeout,
.ndo_vlan_rx_add_vid = fm10k_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = fm10k_vlan_rx_kill_vid,
.ndo_set_rx_mode = fm10k_set_rx_mode,
+ .ndo_get_stats64 = fm10k_get_stats64,
+ .ndo_setup_tc = fm10k_setup_tc,
+ .ndo_set_vf_mac = fm10k_ndo_set_vf_mac,
+ .ndo_set_vf_vlan = fm10k_ndo_set_vf_vlan,
+ .ndo_set_vf_rate = fm10k_ndo_set_vf_bw,
+ .ndo_get_vf_config = fm10k_ndo_get_vf_config,
+ .ndo_add_vxlan_port = fm10k_add_vxlan_port,
+ .ndo_del_vxlan_port = fm10k_del_vxlan_port,
+ .ndo_do_ioctl = fm10k_ioctl,
+ .ndo_dfwd_add_station = fm10k_dfwd_add_station,
+ .ndo_dfwd_del_station = fm10k_dfwd_del_station,
};
#define DEFAULT_DEBUG_LEVEL_SHIFT 3
struct fm10k_intfc *interface;
struct net_device *dev;
- dev = alloc_etherdev(sizeof(struct fm10k_intfc));
+ dev = alloc_etherdev_mq(sizeof(struct fm10k_intfc), MAX_QUEUES);
if (!dev)
return NULL;
/* set net device and ethtool ops */
dev->netdev_ops = &fm10k_netdev_ops;
+ fm10k_set_ethtool_ops(dev);
/* configure default debug level */
interface = netdev_priv(dev);
interface->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
/* configure default features */
- dev->features |= NETIF_F_SG;
+ dev->features |= NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
+ NETIF_F_SG |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_TSO_ECN |
+ NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_RXHASH |
+ NETIF_F_RXCSUM;
/* all features defined to this point should be changeable */
dev->hw_features |= dev->features;
+ /* allow user to enable L2 forwarding acceleration */
+ dev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
+
/* configure VLAN features */
dev->vlan_features |= dev->features;
/* configure tunnel offloads */
- dev->hw_enc_features = NETIF_F_SG;
+ dev->hw_enc_features = NETIF_F_IP_CSUM |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_TSO_ECN |
+ NETIF_F_GSO_UDP_TUNNEL |
+ NETIF_F_IPV6_CSUM |
+ NETIF_F_SG;
/* we want to leave these both on as we cannot disable VLAN tag
* insertion or stripping on the hardware since it is contained
projects / cascardo / linux.git / blobdiff