1437 lines
38 KiB
C
1437 lines
38 KiB
C
|
/* Intel Ethernet Switch Host Interface Driver
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* Copyright(c) 2013 - 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*/
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#include "fm10k.h"
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#include <linux/vmalloc.h>
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#if IS_ENABLED(CONFIG_FM10K_VXLAN)
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#include <net/vxlan.h>
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#endif /* CONFIG_FM10K_VXLAN */
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/**
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* fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
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* @tx_ring: tx descriptor ring (for a specific queue) to setup
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*
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* Return 0 on success, negative on failure
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**/
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int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
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{
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struct device *dev = tx_ring->dev;
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int size;
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size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
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tx_ring->tx_buffer = vzalloc(size);
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if (!tx_ring->tx_buffer)
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goto err;
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u64_stats_init(&tx_ring->syncp);
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/* round up to nearest 4K */
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tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc);
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tx_ring->size = ALIGN(tx_ring->size, 4096);
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tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
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&tx_ring->dma, GFP_KERNEL);
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if (!tx_ring->desc)
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goto err;
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return 0;
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err:
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vfree(tx_ring->tx_buffer);
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tx_ring->tx_buffer = NULL;
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return -ENOMEM;
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}
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/**
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* fm10k_setup_all_tx_resources - allocate all queues Tx resources
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* @interface: board private structure
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*
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* If this function returns with an error, then it's possible one or
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* more of the rings is populated (while the rest are not). It is the
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* callers duty to clean those orphaned rings.
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*
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* Return 0 on success, negative on failure
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**/
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static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface)
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{
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int i, err = 0;
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for (i = 0; i < interface->num_tx_queues; i++) {
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err = fm10k_setup_tx_resources(interface->tx_ring[i]);
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if (!err)
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continue;
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netif_err(interface, probe, interface->netdev,
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"Allocation for Tx Queue %u failed\n", i);
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goto err_setup_tx;
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}
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return 0;
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err_setup_tx:
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/* rewind the index freeing the rings as we go */
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while (i--)
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fm10k_free_tx_resources(interface->tx_ring[i]);
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return err;
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}
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/**
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* fm10k_setup_rx_resources - allocate Rx resources (Descriptors)
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* @rx_ring: rx descriptor ring (for a specific queue) to setup
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*
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* Returns 0 on success, negative on failure
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**/
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int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring)
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{
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struct device *dev = rx_ring->dev;
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int size;
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size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
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rx_ring->rx_buffer = vzalloc(size);
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if (!rx_ring->rx_buffer)
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goto err;
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u64_stats_init(&rx_ring->syncp);
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/* Round up to nearest 4K */
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rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc);
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rx_ring->size = ALIGN(rx_ring->size, 4096);
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rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
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&rx_ring->dma, GFP_KERNEL);
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if (!rx_ring->desc)
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goto err;
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return 0;
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err:
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vfree(rx_ring->rx_buffer);
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rx_ring->rx_buffer = NULL;
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return -ENOMEM;
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}
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/**
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* fm10k_setup_all_rx_resources - allocate all queues Rx resources
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* @interface: board private structure
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*
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* If this function returns with an error, then it's possible one or
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* more of the rings is populated (while the rest are not). It is the
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* callers duty to clean those orphaned rings.
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*
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* Return 0 on success, negative on failure
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**/
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static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface)
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{
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int i, err = 0;
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for (i = 0; i < interface->num_rx_queues; i++) {
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err = fm10k_setup_rx_resources(interface->rx_ring[i]);
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if (!err)
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continue;
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netif_err(interface, probe, interface->netdev,
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"Allocation for Rx Queue %u failed\n", i);
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goto err_setup_rx;
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}
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return 0;
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err_setup_rx:
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/* rewind the index freeing the rings as we go */
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while (i--)
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fm10k_free_rx_resources(interface->rx_ring[i]);
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return err;
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}
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void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *ring,
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struct fm10k_tx_buffer *tx_buffer)
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{
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if (tx_buffer->skb) {
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dev_kfree_skb_any(tx_buffer->skb);
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if (dma_unmap_len(tx_buffer, len))
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dma_unmap_single(ring->dev,
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dma_unmap_addr(tx_buffer, dma),
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dma_unmap_len(tx_buffer, len),
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DMA_TO_DEVICE);
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} else if (dma_unmap_len(tx_buffer, len)) {
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dma_unmap_page(ring->dev,
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dma_unmap_addr(tx_buffer, dma),
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dma_unmap_len(tx_buffer, len),
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DMA_TO_DEVICE);
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}
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tx_buffer->next_to_watch = NULL;
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tx_buffer->skb = NULL;
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dma_unmap_len_set(tx_buffer, len, 0);
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/* tx_buffer must be completely set up in the transmit path */
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}
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/**
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* fm10k_clean_tx_ring - Free Tx Buffers
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* @tx_ring: ring to be cleaned
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**/
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static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring)
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{
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struct fm10k_tx_buffer *tx_buffer;
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unsigned long size;
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u16 i;
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/* ring already cleared, nothing to do */
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if (!tx_ring->tx_buffer)
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return;
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/* Free all the Tx ring sk_buffs */
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for (i = 0; i < tx_ring->count; i++) {
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tx_buffer = &tx_ring->tx_buffer[i];
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fm10k_unmap_and_free_tx_resource(tx_ring, tx_buffer);
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}
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/* reset BQL values */
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netdev_tx_reset_queue(txring_txq(tx_ring));
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size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
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memset(tx_ring->tx_buffer, 0, size);
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/* Zero out the descriptor ring */
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memset(tx_ring->desc, 0, tx_ring->size);
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}
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/**
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* fm10k_free_tx_resources - Free Tx Resources per Queue
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* @tx_ring: Tx descriptor ring for a specific queue
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*
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* Free all transmit software resources
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**/
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void fm10k_free_tx_resources(struct fm10k_ring *tx_ring)
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{
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fm10k_clean_tx_ring(tx_ring);
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vfree(tx_ring->tx_buffer);
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tx_ring->tx_buffer = NULL;
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/* if not set, then don't free */
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if (!tx_ring->desc)
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return;
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dma_free_coherent(tx_ring->dev, tx_ring->size,
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tx_ring->desc, tx_ring->dma);
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tx_ring->desc = NULL;
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}
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/**
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* fm10k_clean_all_tx_rings - Free Tx Buffers for all queues
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* @interface: board private structure
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**/
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void fm10k_clean_all_tx_rings(struct fm10k_intfc *interface)
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{
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int i;
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for (i = 0; i < interface->num_tx_queues; i++)
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fm10k_clean_tx_ring(interface->tx_ring[i]);
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/* remove any stale timestamp buffers and free them */
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skb_queue_purge(&interface->ts_tx_skb_queue);
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}
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/**
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* fm10k_free_all_tx_resources - Free Tx Resources for All Queues
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* @interface: board private structure
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*
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* Free all transmit software resources
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**/
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static void fm10k_free_all_tx_resources(struct fm10k_intfc *interface)
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{
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int i = interface->num_tx_queues;
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while (i--)
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fm10k_free_tx_resources(interface->tx_ring[i]);
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}
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/**
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* fm10k_clean_rx_ring - Free Rx Buffers per Queue
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* @rx_ring: ring to free buffers from
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**/
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static void fm10k_clean_rx_ring(struct fm10k_ring *rx_ring)
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{
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unsigned long size;
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u16 i;
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|
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if (!rx_ring->rx_buffer)
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return;
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|
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if (rx_ring->skb)
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dev_kfree_skb(rx_ring->skb);
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rx_ring->skb = NULL;
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|
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/* Free all the Rx ring sk_buffs */
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for (i = 0; i < rx_ring->count; i++) {
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struct fm10k_rx_buffer *buffer = &rx_ring->rx_buffer[i];
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/* clean-up will only set page pointer to NULL */
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if (!buffer->page)
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continue;
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dma_unmap_page(rx_ring->dev, buffer->dma,
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PAGE_SIZE, DMA_FROM_DEVICE);
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__free_page(buffer->page);
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buffer->page = NULL;
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|
}
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|
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size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
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memset(rx_ring->rx_buffer, 0, size);
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/* Zero out the descriptor ring */
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memset(rx_ring->desc, 0, rx_ring->size);
|
||
|
|
||
|
rx_ring->next_to_alloc = 0;
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||
|
rx_ring->next_to_clean = 0;
|
||
|
rx_ring->next_to_use = 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
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* fm10k_free_rx_resources - Free Rx Resources
|
||
|
* @rx_ring: ring to clean the resources from
|
||
|
*
|
||
|
* Free all receive software resources
|
||
|
**/
|
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void fm10k_free_rx_resources(struct fm10k_ring *rx_ring)
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{
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||
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fm10k_clean_rx_ring(rx_ring);
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|
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||
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vfree(rx_ring->rx_buffer);
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rx_ring->rx_buffer = NULL;
|
||
|
|
||
|
/* if not set, then don't free */
|
||
|
if (!rx_ring->desc)
|
||
|
return;
|
||
|
|
||
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dma_free_coherent(rx_ring->dev, rx_ring->size,
|
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|
rx_ring->desc, rx_ring->dma);
|
||
|
|
||
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rx_ring->desc = NULL;
|
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}
|
||
|
|
||
|
/**
|
||
|
* fm10k_clean_all_rx_rings - Free Rx Buffers for all queues
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||
|
* @interface: board private structure
|
||
|
**/
|
||
|
void fm10k_clean_all_rx_rings(struct fm10k_intfc *interface)
|
||
|
{
|
||
|
int i;
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||
|
|
||
|
for (i = 0; i < interface->num_rx_queues; i++)
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fm10k_clean_rx_ring(interface->rx_ring[i]);
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|
}
|
||
|
|
||
|
/**
|
||
|
* 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
|
||
|
* @interface: board private structure
|
||
|
*
|
||
|
* This function allocates a range of glorts for this inteface to use.
|
||
|
**/
|
||
|
static void fm10k_request_glort_range(struct fm10k_intfc *interface)
|
||
|
{
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 mask = (~hw->mac.dglort_map) >> FM10K_DGLORTMAP_MASK_SHIFT;
|
||
|
|
||
|
/* establish GLORT base */
|
||
|
interface->glort = hw->mac.dglort_map & FM10K_DGLORTMAP_NONE;
|
||
|
interface->glort_count = 0;
|
||
|
|
||
|
/* nothing we can do until mask is allocated */
|
||
|
if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
|
||
|
return;
|
||
|
|
||
|
/* 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);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* fm10k_open - Called when a network interface is made active
|
||
|
* @netdev: network interface device structure
|
||
|
*
|
||
|
* Returns 0 on success, negative value on failure
|
||
|
*
|
||
|
* The open entry point is called when a network interface is made
|
||
|
* active by the system (IFF_UP). At this point all resources needed
|
||
|
* for transmit and receive operations are allocated, the interrupt
|
||
|
* handler is registered with the OS, the watchdog timer is started,
|
||
|
* and the stack is notified that the interface is ready.
|
||
|
**/
|
||
|
int fm10k_open(struct net_device *netdev)
|
||
|
{
|
||
|
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)
|
||
|
goto err_req_irq;
|
||
|
|
||
|
/* 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_FM10K_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_close - Disables a network interface
|
||
|
* @netdev: network interface device structure
|
||
|
*
|
||
|
* Returns 0, this is not allowed to fail
|
||
|
*
|
||
|
* The close entry point is called when an interface is de-activated
|
||
|
* by the OS. The hardware is still under the drivers control, but
|
||
|
* needs to be disabled. A global MAC reset is issued to stop the
|
||
|
* hardware, and all transmit and receive resources are freed.
|
||
|
**/
|
||
|
int fm10k_close(struct net_device *netdev)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
||
|
|
||
|
fm10k_down(interface);
|
||
|
|
||
|
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)
|
||
|
{
|
||
|
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)
|
||
|
{
|
||
|
if (new_mtu < 68 || new_mtu > FM10K_MAX_JUMBO_FRAME_SIZE)
|
||
|
return -EINVAL;
|
||
|
|
||
|
dev->mtu = 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)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 glort = interface->glort;
|
||
|
u16 vid = interface->vid;
|
||
|
bool set = !!(vid / VLAN_N_VID);
|
||
|
int err;
|
||
|
|
||
|
/* drop any leading bits on the VLAN ID */
|
||
|
vid &= VLAN_N_VID - 1;
|
||
|
|
||
|
err = hw->mac.ops.update_uc_addr(hw, glort, uc_addr, vid, set, 0);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
/* return non-zero value as we are only doing a partial sync/unsync */
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int fm10k_mc_vlan_unsync(struct net_device *netdev,
|
||
|
const unsigned char *mc_addr)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 glort = interface->glort;
|
||
|
u16 vid = interface->vid;
|
||
|
bool set = !!(vid / VLAN_N_VID);
|
||
|
int err;
|
||
|
|
||
|
/* drop any leading bits on the VLAN ID */
|
||
|
vid &= VLAN_N_VID - 1;
|
||
|
|
||
|
err = hw->mac.ops.update_mc_addr(hw, glort, mc_addr, vid, set);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
/* return non-zero value as we are only doing a partial sync/unsync */
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int fm10k_update_vid(struct net_device *netdev, u16 vid, bool set)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
s32 err;
|
||
|
|
||
|
/* updates do not apply to VLAN 0 */
|
||
|
if (!vid)
|
||
|
return 0;
|
||
|
|
||
|
if (vid >= VLAN_N_VID)
|
||
|
return -EINVAL;
|
||
|
|
||
|
/* Verify we have permission to add VLANs */
|
||
|
if (hw->mac.vlan_override)
|
||
|
return -EACCES;
|
||
|
|
||
|
/* if default VLAN is already present do nothing */
|
||
|
if (vid == hw->mac.default_vid)
|
||
|
return -EBUSY;
|
||
|
|
||
|
/* update active_vlans bitmask */
|
||
|
set_bit(vid, interface->active_vlans);
|
||
|
if (!set)
|
||
|
clear_bit(vid, interface->active_vlans);
|
||
|
|
||
|
fm10k_mbx_lock(interface);
|
||
|
|
||
|
/* only need to update the VLAN if not in promiscous mode */
|
||
|
if (!(netdev->flags & IFF_PROMISC)) {
|
||
|
err = hw->mac.ops.update_vlan(hw, vid, 0, set);
|
||
|
if (err)
|
||
|
goto err_out;
|
||
|
}
|
||
|
|
||
|
/* update our base MAC address */
|
||
|
err = hw->mac.ops.update_uc_addr(hw, interface->glort, hw->mac.addr,
|
||
|
vid, set, 0);
|
||
|
if (err)
|
||
|
goto err_out;
|
||
|
|
||
|
/* set vid prior to syncing/unsyncing the VLAN */
|
||
|
interface->vid = vid + (set ? VLAN_N_VID : 0);
|
||
|
|
||
|
/* Update the unicast and multicast address list to add/drop VLAN */
|
||
|
__dev_uc_unsync(netdev, fm10k_uc_vlan_unsync);
|
||
|
__dev_mc_unsync(netdev, fm10k_mc_vlan_unsync);
|
||
|
|
||
|
err_out:
|
||
|
fm10k_mbx_unlock(interface);
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int fm10k_vlan_rx_add_vid(struct net_device *netdev,
|
||
|
__always_unused __be16 proto, u16 vid)
|
||
|
{
|
||
|
/* update VLAN and address table based on changes */
|
||
|
return fm10k_update_vid(netdev, vid, true);
|
||
|
}
|
||
|
|
||
|
static int fm10k_vlan_rx_kill_vid(struct net_device *netdev,
|
||
|
__always_unused __be16 proto, u16 vid)
|
||
|
{
|
||
|
/* update VLAN and address table based on changes */
|
||
|
return fm10k_update_vid(netdev, vid, false);
|
||
|
}
|
||
|
|
||
|
static u16 fm10k_find_next_vlan(struct fm10k_intfc *interface, u16 vid)
|
||
|
{
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 default_vid = hw->mac.default_vid;
|
||
|
u16 vid_limit = vid < default_vid ? default_vid : VLAN_N_VID;
|
||
|
|
||
|
vid = find_next_bit(interface->active_vlans, vid_limit, ++vid);
|
||
|
|
||
|
return vid;
|
||
|
}
|
||
|
|
||
|
static void fm10k_clear_unused_vlans(struct fm10k_intfc *interface)
|
||
|
{
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u32 vid, prev_vid;
|
||
|
|
||
|
/* loop through and find any gaps in the table */
|
||
|
for (vid = 0, prev_vid = 0;
|
||
|
prev_vid < VLAN_N_VID;
|
||
|
prev_vid = vid + 1, vid = fm10k_find_next_vlan(interface, vid)) {
|
||
|
if (prev_vid == vid)
|
||
|
continue;
|
||
|
|
||
|
/* send request to clear multiple bits at a time */
|
||
|
prev_vid += (vid - prev_vid - 1) << FM10K_VLAN_LENGTH_SHIFT;
|
||
|
hw->mac.ops.update_vlan(hw, prev_vid, 0, false);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int __fm10k_uc_sync(struct net_device *dev,
|
||
|
const unsigned char *addr, bool sync)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 vid, glort = interface->glort;
|
||
|
s32 err;
|
||
|
|
||
|
if (!is_valid_ether_addr(addr))
|
||
|
return -EADDRNOTAVAIL;
|
||
|
|
||
|
/* update table with current entries */
|
||
|
for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0;
|
||
|
vid < VLAN_N_VID;
|
||
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
||
|
err = hw->mac.ops.update_uc_addr(hw, glort, addr,
|
||
|
vid, sync, 0);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int fm10k_uc_sync(struct net_device *dev,
|
||
|
const unsigned char *addr)
|
||
|
{
|
||
|
return __fm10k_uc_sync(dev, addr, true);
|
||
|
}
|
||
|
|
||
|
static int fm10k_uc_unsync(struct net_device *dev,
|
||
|
const unsigned char *addr)
|
||
|
{
|
||
|
return __fm10k_uc_sync(dev, addr, false);
|
||
|
}
|
||
|
|
||
|
static int fm10k_set_mac(struct net_device *dev, void *p)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
struct sockaddr *addr = p;
|
||
|
s32 err = 0;
|
||
|
|
||
|
if (!is_valid_ether_addr(addr->sa_data))
|
||
|
return -EADDRNOTAVAIL;
|
||
|
|
||
|
if (dev->flags & IFF_UP) {
|
||
|
/* setting MAC address requires mailbox */
|
||
|
fm10k_mbx_lock(interface);
|
||
|
|
||
|
err = fm10k_uc_sync(dev, addr->sa_data);
|
||
|
if (!err)
|
||
|
fm10k_uc_unsync(dev, hw->mac.addr);
|
||
|
|
||
|
fm10k_mbx_unlock(interface);
|
||
|
}
|
||
|
|
||
|
if (!err) {
|
||
|
ether_addr_copy(dev->dev_addr, addr->sa_data);
|
||
|
ether_addr_copy(hw->mac.addr, addr->sa_data);
|
||
|
dev->addr_assign_type &= ~NET_ADDR_RANDOM;
|
||
|
}
|
||
|
|
||
|
/* if we had a mailbox error suggest trying again */
|
||
|
return err ? -EAGAIN : 0;
|
||
|
}
|
||
|
|
||
|
static int __fm10k_mc_sync(struct net_device *dev,
|
||
|
const unsigned char *addr, bool sync)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
u16 vid, glort = interface->glort;
|
||
|
s32 err;
|
||
|
|
||
|
if (!is_multicast_ether_addr(addr))
|
||
|
return -EADDRNOTAVAIL;
|
||
|
|
||
|
/* update table with current entries */
|
||
|
for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0;
|
||
|
vid < VLAN_N_VID;
|
||
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
||
|
err = hw->mac.ops.update_mc_addr(hw, glort, addr, vid, sync);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int fm10k_mc_sync(struct net_device *dev,
|
||
|
const unsigned char *addr)
|
||
|
{
|
||
|
return __fm10k_mc_sync(dev, addr, true);
|
||
|
}
|
||
|
|
||
|
static int fm10k_mc_unsync(struct net_device *dev,
|
||
|
const unsigned char *addr)
|
||
|
{
|
||
|
return __fm10k_mc_sync(dev, addr, false);
|
||
|
}
|
||
|
|
||
|
static void fm10k_set_rx_mode(struct net_device *dev)
|
||
|
{
|
||
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
int xcast_mode;
|
||
|
|
||
|
/* no need to update the harwdare if we are not running */
|
||
|
if (!(dev->flags & IFF_UP))
|
||
|
return;
|
||
|
|
||
|
/* determine new mode based on flags */
|
||
|
xcast_mode = (dev->flags & IFF_PROMISC) ? FM10K_XCAST_MODE_PROMISC :
|
||
|
(dev->flags & IFF_ALLMULTI) ? FM10K_XCAST_MODE_ALLMULTI :
|
||
|
(dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ?
|
||
|
FM10K_XCAST_MODE_MULTI : FM10K_XCAST_MODE_NONE;
|
||
|
|
||
|
fm10k_mbx_lock(interface);
|
||
|
|
||
|
/* syncronize all of the addresses */
|
||
|
if (xcast_mode != FM10K_XCAST_MODE_PROMISC) {
|
||
|
__dev_uc_sync(dev, fm10k_uc_sync, fm10k_uc_unsync);
|
||
|
if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI)
|
||
|
__dev_mc_sync(dev, fm10k_mc_sync, fm10k_mc_unsync);
|
||
|
}
|
||
|
|
||
|
/* if we aren't changing modes there is nothing to do */
|
||
|
if (interface->xcast_mode != xcast_mode) {
|
||
|
/* update VLAN table */
|
||
|
if (xcast_mode == FM10K_XCAST_MODE_PROMISC)
|
||
|
hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0, true);
|
||
|
if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC)
|
||
|
fm10k_clear_unused_vlans(interface);
|
||
|
|
||
|
/* update xcast mode */
|
||
|
hw->mac.ops.update_xcast_mode(hw, interface->glort, xcast_mode);
|
||
|
|
||
|
/* record updated xcast mode state */
|
||
|
interface->xcast_mode = xcast_mode;
|
||
|
}
|
||
|
|
||
|
fm10k_mbx_unlock(interface);
|
||
|
}
|
||
|
|
||
|
void fm10k_restore_rx_state(struct fm10k_intfc *interface)
|
||
|
{
|
||
|
struct net_device *netdev = interface->netdev;
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
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;
|
||
|
|
||
|
/* convert interface flags to xcast mode */
|
||
|
if (netdev->flags & IFF_PROMISC)
|
||
|
xcast_mode = FM10K_XCAST_MODE_PROMISC;
|
||
|
else if (netdev->flags & IFF_ALLMULTI)
|
||
|
xcast_mode = FM10K_XCAST_MODE_ALLMULTI;
|
||
|
else if (netdev->flags & (IFF_BROADCAST | IFF_MULTICAST))
|
||
|
xcast_mode = FM10K_XCAST_MODE_MULTI;
|
||
|
else
|
||
|
xcast_mode = FM10K_XCAST_MODE_NONE;
|
||
|
|
||
|
fm10k_mbx_lock(interface);
|
||
|
|
||
|
/* Enable logical port */
|
||
|
hw->mac.ops.update_lport_state(hw, glort, interface->glort_count, true);
|
||
|
|
||
|
/* update VLAN table */
|
||
|
hw->mac.ops.update_vlan(hw, FM10K_VLAN_ALL, 0,
|
||
|
xcast_mode == FM10K_XCAST_MODE_PROMISC);
|
||
|
|
||
|
/* Add filter for VLAN 0 */
|
||
|
hw->mac.ops.update_vlan(hw, 0, 0, true);
|
||
|
|
||
|
/* update table with current entries */
|
||
|
for (vid = hw->mac.default_vid ? fm10k_find_next_vlan(interface, 0) : 0;
|
||
|
vid < VLAN_N_VID;
|
||
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
||
|
hw->mac.ops.update_vlan(hw, vid, 0, true);
|
||
|
hw->mac.ops.update_uc_addr(hw, glort, hw->mac.addr,
|
||
|
vid, true, 0);
|
||
|
}
|
||
|
|
||
|
/* syncronize all of the addresses */
|
||
|
if (xcast_mode != FM10K_XCAST_MODE_PROMISC) {
|
||
|
__dev_uc_sync(netdev, fm10k_uc_sync, fm10k_uc_unsync);
|
||
|
if (xcast_mode != FM10K_XCAST_MODE_ALLMULTI)
|
||
|
__dev_mc_sync(netdev, fm10k_mc_sync, fm10k_mc_unsync);
|
||
|
}
|
||
|
|
||
|
/* update xcast mode */
|
||
|
hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode);
|
||
|
|
||
|
fm10k_mbx_unlock(interface);
|
||
|
|
||
|
/* 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)
|
||
|
{
|
||
|
struct net_device *netdev = interface->netdev;
|
||
|
struct fm10k_hw *hw = &interface->hw;
|
||
|
|
||
|
fm10k_mbx_lock(interface);
|
||
|
|
||
|
/* clear the logical port state on lower device */
|
||
|
hw->mac.ops.update_lport_state(hw, interface->glort,
|
||
|
interface->glort_count, false);
|
||
|
|
||
|
fm10k_mbx_unlock(interface);
|
||
|
|
||
|
/* reset flags to default state */
|
||
|
interface->xcast_mode = FM10K_XCAST_MODE_NONE;
|
||
|
|
||
|
/* clear the sync flag since the lport has been dropped */
|
||
|
__dev_uc_unsync(netdev, NULL);
|
||
|
__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_validate_addr = eth_validate_addr,
|
||
|
.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 net_device *fm10k_alloc_netdev(void)
|
||
|
{
|
||
|
struct fm10k_intfc *interface;
|
||
|
struct net_device *dev;
|
||
|
|
||
|
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_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_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
|
||
|
* in the FTAG and not in the frame itself.
|
||
|
*/
|
||
|
dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
|
||
|
NETIF_F_HW_VLAN_CTAG_RX |
|
||
|
NETIF_F_HW_VLAN_CTAG_FILTER;
|
||
|
|
||
|
dev->priv_flags |= IFF_UNICAST_FLT;
|
||
|
|
||
|
return dev;
|
||
|
}
|