![Ngai-Mint Kwan](/assets/img/avatar_default.png)
Clarify the comment for when entering promiscuous mode that we update the VLAN table. Add a comment distinguishing the case where we're exiting promiscuous mode and need to clear the entire VLAN table. Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@gmail.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
1690 lines
44 KiB
C
1690 lines
44 KiB
C
/* Intel(R) Ethernet Switch Host Interface Driver
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* Copyright(c) 2013 - 2017 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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#include <net/udp_tunnel.h>
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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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}
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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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if (!rx_ring->rx_buffer)
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return;
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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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/* 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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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);
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rx_ring->next_to_alloc = 0;
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rx_ring->next_to_clean = 0;
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rx_ring->next_to_use = 0;
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}
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/**
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* fm10k_free_rx_resources - Free Rx Resources
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* @rx_ring: ring to clean the resources from
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*
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* Free all receive software resources
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**/
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void fm10k_free_rx_resources(struct fm10k_ring *rx_ring)
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{
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fm10k_clean_rx_ring(rx_ring);
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vfree(rx_ring->rx_buffer);
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rx_ring->rx_buffer = NULL;
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/* if not set, then don't free */
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if (!rx_ring->desc)
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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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}
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/**
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* fm10k_clean_all_rx_rings - Free Rx Buffers for all queues
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* @interface: board private structure
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**/
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void fm10k_clean_all_rx_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_rx_queues; i++)
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fm10k_clean_rx_ring(interface->rx_ring[i]);
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}
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/**
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* fm10k_free_all_rx_resources - Free Rx Resources for All Queues
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* @interface: board private structure
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*
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* Free all receive software resources
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**/
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static void fm10k_free_all_rx_resources(struct fm10k_intfc *interface)
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{
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int i = interface->num_rx_queues;
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while (i--)
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fm10k_free_rx_resources(interface->rx_ring[i]);
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}
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/**
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* fm10k_request_glort_range - Request GLORTs for use in configuring rules
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* @interface: board private structure
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*
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* This function allocates a range of glorts for this interface to use.
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**/
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static void fm10k_request_glort_range(struct fm10k_intfc *interface)
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{
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struct fm10k_hw *hw = &interface->hw;
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u16 mask = (~hw->mac.dglort_map) >> FM10K_DGLORTMAP_MASK_SHIFT;
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/* establish GLORT base */
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interface->glort = hw->mac.dglort_map & FM10K_DGLORTMAP_NONE;
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interface->glort_count = 0;
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/* nothing we can do until mask is allocated */
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if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
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return;
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/* we support 3 possible GLORT configurations.
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* 1: VFs consume all but the last 1
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* 2: VFs and PF split glorts with possible gap between
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* 3: VFs allocated first 64, all others belong to PF
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*/
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if (mask <= hw->iov.total_vfs) {
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interface->glort_count = 1;
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interface->glort += mask;
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} else if (mask < 64) {
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interface->glort_count = (mask + 1) / 2;
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interface->glort += interface->glort_count;
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} else {
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interface->glort_count = mask - 63;
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interface->glort += 64;
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}
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}
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/**
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* fm10k_free_udp_port_info
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* @interface: board private structure
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*
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* This function frees both geneve_port and vxlan_port structures
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**/
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static void fm10k_free_udp_port_info(struct fm10k_intfc *interface)
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{
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struct fm10k_udp_port *port;
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/* flush all entries from vxlan list */
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port = list_first_entry_or_null(&interface->vxlan_port,
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struct fm10k_udp_port, list);
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while (port) {
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list_del(&port->list);
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kfree(port);
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port = list_first_entry_or_null(&interface->vxlan_port,
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struct fm10k_udp_port,
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list);
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}
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/* flush all entries from geneve list */
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port = list_first_entry_or_null(&interface->geneve_port,
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struct fm10k_udp_port, list);
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while (port) {
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list_del(&port->list);
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kfree(port);
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port = list_first_entry_or_null(&interface->vxlan_port,
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struct fm10k_udp_port,
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list);
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}
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}
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/**
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* fm10k_restore_udp_port_info
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* @interface: board private structure
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*
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* This function restores the value in the tunnel_cfg register(s) after reset
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**/
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static void fm10k_restore_udp_port_info(struct fm10k_intfc *interface)
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{
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struct fm10k_hw *hw = &interface->hw;
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struct fm10k_udp_port *port;
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/* only the PF supports configuring tunnels */
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if (hw->mac.type != fm10k_mac_pf)
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return;
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port = list_first_entry_or_null(&interface->vxlan_port,
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struct fm10k_udp_port, list);
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/* restore tunnel configuration register */
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fm10k_write_reg(hw, FM10K_TUNNEL_CFG,
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(port ? ntohs(port->port) : 0) |
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(ETH_P_TEB << FM10K_TUNNEL_CFG_NVGRE_SHIFT));
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port = list_first_entry_or_null(&interface->geneve_port,
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struct fm10k_udp_port, list);
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/* restore Geneve tunnel configuration register */
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fm10k_write_reg(hw, FM10K_TUNNEL_CFG_GENEVE,
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(port ? ntohs(port->port) : 0));
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}
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static struct fm10k_udp_port *
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fm10k_remove_tunnel_port(struct list_head *ports,
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struct udp_tunnel_info *ti)
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{
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struct fm10k_udp_port *port;
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list_for_each_entry(port, ports, list) {
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if ((port->port == ti->port) &&
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(port->sa_family == ti->sa_family)) {
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list_del(&port->list);
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return port;
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}
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}
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return NULL;
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}
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|
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static void fm10k_insert_tunnel_port(struct list_head *ports,
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struct udp_tunnel_info *ti)
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{
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struct fm10k_udp_port *port;
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|
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/* remove existing port entry from the list so that the newest items
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* are always at the tail of the list.
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*/
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port = fm10k_remove_tunnel_port(ports, ti);
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if (!port) {
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port = kmalloc(sizeof(*port), GFP_ATOMIC);
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if (!port)
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return;
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port->port = ti->port;
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port->sa_family = ti->sa_family;
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}
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list_add_tail(&port->list, ports);
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}
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|
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/**
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* fm10k_udp_tunnel_add
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* @netdev: network interface device structure
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* @ti: Tunnel endpoint information
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*
|
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* This function is called when a new UDP tunnel port has been added.
|
|
* Due to hardware restrictions, only one port per type can be offloaded at
|
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* once.
|
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**/
|
|
static void fm10k_udp_tunnel_add(struct net_device *dev,
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struct udp_tunnel_info *ti)
|
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{
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struct fm10k_intfc *interface = netdev_priv(dev);
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|
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/* only the PF supports configuring tunnels */
|
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if (interface->hw.mac.type != fm10k_mac_pf)
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return;
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|
|
switch (ti->type) {
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case UDP_TUNNEL_TYPE_VXLAN:
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fm10k_insert_tunnel_port(&interface->vxlan_port, ti);
|
|
break;
|
|
case UDP_TUNNEL_TYPE_GENEVE:
|
|
fm10k_insert_tunnel_port(&interface->geneve_port, ti);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
fm10k_restore_udp_port_info(interface);
|
|
}
|
|
|
|
/**
|
|
* fm10k_udp_tunnel_del
|
|
* @netdev: network interface device structure
|
|
* @ti: Tunnel endpoint information
|
|
*
|
|
* This function is called when a new UDP tunnel port is deleted. The freed
|
|
* port will be removed from the list, then we reprogram the offloaded port
|
|
* based on the head of the list.
|
|
**/
|
|
static void fm10k_udp_tunnel_del(struct net_device *dev,
|
|
struct udp_tunnel_info *ti)
|
|
{
|
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
|
struct fm10k_udp_port *port = NULL;
|
|
|
|
if (interface->hw.mac.type != fm10k_mac_pf)
|
|
return;
|
|
|
|
switch (ti->type) {
|
|
case UDP_TUNNEL_TYPE_VXLAN:
|
|
port = fm10k_remove_tunnel_port(&interface->vxlan_port, ti);
|
|
break;
|
|
case UDP_TUNNEL_TYPE_GENEVE:
|
|
port = fm10k_remove_tunnel_port(&interface->geneve_port, ti);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* if we did remove a port we need to free its memory */
|
|
kfree(port);
|
|
|
|
fm10k_restore_udp_port_info(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;
|
|
|
|
udp_tunnel_get_rx_info(netdev);
|
|
|
|
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_free_udp_port_info(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);
|
|
int num_tx_queues = READ_ONCE(interface->num_tx_queues);
|
|
unsigned int r_idx = skb->queue_mapping;
|
|
int err;
|
|
|
|
if (!num_tx_queues)
|
|
return NETDEV_TX_BUSY;
|
|
|
|
if ((skb->protocol == htons(ETH_P_8021Q)) &&
|
|
!skb_vlan_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) {
|
|
dev_kfree_skb(skb);
|
|
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);
|
|
}
|
|
|
|
if (r_idx >= num_tx_queues)
|
|
r_idx %= num_tx_queues;
|
|
|
|
err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fm10k_host_mbx_ready - Check PF interface's mailbox readiness
|
|
* @interface: board private structure
|
|
*
|
|
* This function checks if the PF interface's mailbox is ready before queueing
|
|
* mailbox messages for transmission. This will prevent filling the TX mailbox
|
|
* queue when the receiver is not ready. VF interfaces are exempt from this
|
|
* check since it will block all PF-VF mailbox messages from being sent from
|
|
* the VF to the PF at initialization.
|
|
**/
|
|
static bool fm10k_host_mbx_ready(struct fm10k_intfc *interface)
|
|
{
|
|
struct fm10k_hw *hw = &interface->hw;
|
|
|
|
return (hw->mac.type == fm10k_mac_vf || interface->host_ready);
|
|
}
|
|
|
|
/**
|
|
* fm10k_queue_vlan_request - Queue a VLAN update request
|
|
* @interface: the fm10k interface structure
|
|
* @vid: the VLAN vid
|
|
* @vsi: VSI index number
|
|
* @set: whether to set or clear
|
|
*
|
|
* This function queues up a VLAN update. For VFs, this must be sent to the
|
|
* managing PF over the mailbox. For PFs, we'll use the same handling so that
|
|
* it's similar to the VF. This avoids storming the PF<->VF mailbox with too
|
|
* many VLAN updates during reset.
|
|
*/
|
|
int fm10k_queue_vlan_request(struct fm10k_intfc *interface,
|
|
u32 vid, u8 vsi, bool set)
|
|
{
|
|
struct fm10k_macvlan_request *request;
|
|
unsigned long flags;
|
|
|
|
/* This must be atomic since we may be called while the netdev
|
|
* addr_list_lock is held
|
|
*/
|
|
request = kzalloc(sizeof(*request), GFP_ATOMIC);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
request->type = FM10K_VLAN_REQUEST;
|
|
request->vlan.vid = vid;
|
|
request->vlan.vsi = vsi;
|
|
request->set = set;
|
|
|
|
spin_lock_irqsave(&interface->macvlan_lock, flags);
|
|
list_add_tail(&request->list, &interface->macvlan_requests);
|
|
spin_unlock_irqrestore(&interface->macvlan_lock, flags);
|
|
|
|
fm10k_macvlan_schedule(interface);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* fm10k_queue_mac_request - Queue a MAC update request
|
|
* @interface: the fm10k interface structure
|
|
* @glort: the target glort for this update
|
|
* @addr: the address to update
|
|
* @vid: the vid to update
|
|
* @sync: whether to add or remove
|
|
*
|
|
* This function queues up a MAC request for sending to the switch manager.
|
|
* A separate thread monitors the queue and sends updates to the switch
|
|
* manager. Return 0 on success, and negative error code on failure.
|
|
**/
|
|
int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort,
|
|
const unsigned char *addr, u16 vid, bool set)
|
|
{
|
|
struct fm10k_macvlan_request *request;
|
|
unsigned long flags;
|
|
|
|
/* This must be atomic since we may be called while the netdev
|
|
* addr_list_lock is held
|
|
*/
|
|
request = kzalloc(sizeof(*request), GFP_ATOMIC);
|
|
if (!request)
|
|
return -ENOMEM;
|
|
|
|
if (is_multicast_ether_addr(addr))
|
|
request->type = FM10K_MC_MAC_REQUEST;
|
|
else
|
|
request->type = FM10K_UC_MAC_REQUEST;
|
|
|
|
ether_addr_copy(request->mac.addr, addr);
|
|
request->mac.glort = glort;
|
|
request->mac.vid = vid;
|
|
request->set = set;
|
|
|
|
spin_lock_irqsave(&interface->macvlan_lock, flags);
|
|
list_add_tail(&request->list, &interface->macvlan_requests);
|
|
spin_unlock_irqrestore(&interface->macvlan_lock, flags);
|
|
|
|
fm10k_macvlan_schedule(interface);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* fm10k_clear_macvlan_queue - Cancel pending updates for a given glort
|
|
* @interface: the fm10k interface structure
|
|
* @glort: the target glort to clear
|
|
* @vlans: true to clear VLAN messages, false to ignore them
|
|
*
|
|
* Cancel any outstanding MAC/VLAN requests for a given glort. This is
|
|
* expected to be called when a logical port goes down.
|
|
**/
|
|
void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface,
|
|
u16 glort, bool vlans)
|
|
|
|
{
|
|
struct fm10k_macvlan_request *r, *tmp;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&interface->macvlan_lock, flags);
|
|
|
|
/* Free any outstanding MAC/VLAN requests for this interface */
|
|
list_for_each_entry_safe(r, tmp, &interface->macvlan_requests, list) {
|
|
switch (r->type) {
|
|
case FM10K_MC_MAC_REQUEST:
|
|
case FM10K_UC_MAC_REQUEST:
|
|
/* Don't free requests for other interfaces */
|
|
if (r->mac.glort != glort)
|
|
break;
|
|
/* fall through */
|
|
case FM10K_VLAN_REQUEST:
|
|
if (vlans) {
|
|
list_del(&r->list);
|
|
kfree(r);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&interface->macvlan_lock, flags);
|
|
}
|
|
|
|
static int fm10k_uc_vlan_unsync(struct net_device *netdev,
|
|
const unsigned char *uc_addr)
|
|
{
|
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
|
u16 glort = interface->glort;
|
|
u16 vid = interface->vid;
|
|
bool set = !!(vid / VLAN_N_VID);
|
|
int err = -EHOSTDOWN;
|
|
|
|
/* drop any leading bits on the VLAN ID */
|
|
vid &= VLAN_N_VID - 1;
|
|
|
|
err = fm10k_queue_mac_request(interface, glort, uc_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_mc_vlan_unsync(struct net_device *netdev,
|
|
const unsigned char *mc_addr)
|
|
{
|
|
struct fm10k_intfc *interface = netdev_priv(netdev);
|
|
u16 glort = interface->glort;
|
|
u16 vid = interface->vid;
|
|
bool set = !!(vid / VLAN_N_VID);
|
|
int err = -EHOSTDOWN;
|
|
|
|
/* drop any leading bits on the VLAN ID */
|
|
vid &= VLAN_N_VID - 1;
|
|
|
|
err = fm10k_queue_mac_request(interface, 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;
|
|
int i;
|
|
|
|
/* updates do not apply to VLAN 0 */
|
|
if (!vid)
|
|
return 0;
|
|
|
|
if (vid >= VLAN_N_VID)
|
|
return -EINVAL;
|
|
|
|
/* Verify that we have permission to add VLANs. If this is a request
|
|
* to remove a VLAN, we still want to allow the user to remove the
|
|
* VLAN device. In that case, we need to clear the bit in the
|
|
* active_vlans bitmask.
|
|
*/
|
|
if (set && hw->mac.vlan_override)
|
|
return -EACCES;
|
|
|
|
/* update active_vlans bitmask */
|
|
set_bit(vid, interface->active_vlans);
|
|
if (!set)
|
|
clear_bit(vid, interface->active_vlans);
|
|
|
|
/* disable the default VLAN ID on ring if we have an active VLAN */
|
|
for (i = 0; i < interface->num_rx_queues; i++) {
|
|
struct fm10k_ring *rx_ring = interface->rx_ring[i];
|
|
u16 rx_vid = rx_ring->vid & (VLAN_N_VID - 1);
|
|
|
|
if (test_bit(rx_vid, interface->active_vlans))
|
|
rx_ring->vid |= FM10K_VLAN_CLEAR;
|
|
else
|
|
rx_ring->vid &= ~FM10K_VLAN_CLEAR;
|
|
}
|
|
|
|
/* If our VLAN has been overridden, there is no reason to send VLAN
|
|
* removal requests as they will be silently ignored.
|
|
*/
|
|
if (hw->mac.vlan_override)
|
|
return 0;
|
|
|
|
/* Do not remove default VLAN ID related entries from VLAN and MAC
|
|
* tables
|
|
*/
|
|
if (!set && vid == hw->mac.default_vid)
|
|
return 0;
|
|
|
|
/* Do not throw an error if the interface is down. We will sync once
|
|
* we come up
|
|
*/
|
|
if (test_bit(__FM10K_DOWN, interface->state))
|
|
return 0;
|
|
|
|
fm10k_mbx_lock(interface);
|
|
|
|
/* only need to update the VLAN if not in promiscuous mode */
|
|
if (!(netdev->flags & IFF_PROMISC)) {
|
|
err = fm10k_queue_vlan_request(interface, vid, 0, set);
|
|
if (err)
|
|
goto err_out;
|
|
}
|
|
|
|
/* Update our base MAC address */
|
|
err = fm10k_queue_mac_request(interface, interface->glort,
|
|
hw->mac.addr, vid, set);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
/* set VLAN ID 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)
|
|
{
|
|
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;
|
|
fm10k_queue_vlan_request(interface, 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);
|
|
u16 vid, glort = interface->glort;
|
|
s32 err;
|
|
|
|
if (!is_valid_ether_addr(addr))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
for (vid = fm10k_find_next_vlan(interface, 0);
|
|
vid < VLAN_N_VID;
|
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
|
err = fm10k_queue_mac_request(interface, glort,
|
|
addr, vid, sync);
|
|
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);
|
|
u16 vid, glort = interface->glort;
|
|
s32 err;
|
|
|
|
if (!is_multicast_ether_addr(addr))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
for (vid = fm10k_find_next_vlan(interface, 0);
|
|
vid < VLAN_N_VID;
|
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
|
err = fm10k_queue_mac_request(interface, 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);
|
|
|
|
/* update xcast mode first, but only if it changed */
|
|
if (interface->xcast_mode != xcast_mode) {
|
|
/* update VLAN table when entering promiscuous mode */
|
|
if (xcast_mode == FM10K_XCAST_MODE_PROMISC)
|
|
fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL,
|
|
0, true);
|
|
|
|
/* clear VLAN table when exiting promiscuous mode */
|
|
if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC)
|
|
fm10k_clear_unused_vlans(interface);
|
|
|
|
/* update xcast mode if host's mailbox is ready */
|
|
if (fm10k_host_mbx_ready(interface))
|
|
hw->mac.ops.update_xcast_mode(hw, interface->glort,
|
|
xcast_mode);
|
|
|
|
/* record updated xcast mode state */
|
|
interface->xcast_mode = xcast_mode;
|
|
}
|
|
|
|
/* synchronize all of the addresses */
|
|
__dev_uc_sync(dev, fm10k_uc_sync, fm10k_uc_unsync);
|
|
__dev_mc_sync(dev, fm10k_mc_sync, fm10k_mc_unsync);
|
|
|
|
fm10k_mbx_unlock(interface);
|
|
}
|
|
|
|
void fm10k_restore_rx_state(struct fm10k_intfc *interface)
|
|
{
|
|
struct fm10k_l2_accel *l2_accel = interface->l2_accel;
|
|
struct net_device *netdev = interface->netdev;
|
|
struct fm10k_hw *hw = &interface->hw;
|
|
int xcast_mode, i;
|
|
u16 vid, glort;
|
|
|
|
/* 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 if host's mailbox is ready */
|
|
if (fm10k_host_mbx_ready(interface))
|
|
hw->mac.ops.update_lport_state(hw, glort,
|
|
interface->glort_count, true);
|
|
|
|
/* update VLAN table */
|
|
fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL, 0,
|
|
xcast_mode == FM10K_XCAST_MODE_PROMISC);
|
|
|
|
/* update table with current entries */
|
|
for (vid = fm10k_find_next_vlan(interface, 0);
|
|
vid < VLAN_N_VID;
|
|
vid = fm10k_find_next_vlan(interface, vid)) {
|
|
fm10k_queue_vlan_request(interface, vid, 0, true);
|
|
|
|
fm10k_queue_mac_request(interface, glort,
|
|
hw->mac.addr, vid, true);
|
|
}
|
|
|
|
/* update xcast mode before synchronizing addresses if host's mailbox
|
|
* is ready
|
|
*/
|
|
if (fm10k_host_mbx_ready(interface))
|
|
hw->mac.ops.update_xcast_mode(hw, glort, xcast_mode);
|
|
|
|
/* synchronize all of the addresses */
|
|
__dev_uc_sync(netdev, fm10k_uc_sync, fm10k_uc_unsync);
|
|
__dev_mc_sync(netdev, fm10k_mc_sync, fm10k_mc_unsync);
|
|
|
|
/* synchronize macvlan addresses */
|
|
if (l2_accel) {
|
|
for (i = 0; i < l2_accel->size; i++) {
|
|
struct net_device *sdev = l2_accel->macvlan[i];
|
|
|
|
if (!sdev)
|
|
continue;
|
|
|
|
glort = l2_accel->dglort + 1 + i;
|
|
|
|
hw->mac.ops.update_xcast_mode(hw, glort,
|
|
FM10K_XCAST_MODE_MULTI);
|
|
fm10k_queue_mac_request(interface, glort,
|
|
sdev->dev_addr,
|
|
hw->mac.default_vid, true);
|
|
}
|
|
}
|
|
|
|
fm10k_mbx_unlock(interface);
|
|
|
|
/* record updated xcast mode state */
|
|
interface->xcast_mode = xcast_mode;
|
|
|
|
/* Restore tunnel configuration */
|
|
fm10k_restore_udp_port_info(interface);
|
|
}
|
|
|
|
void fm10k_reset_rx_state(struct fm10k_intfc *interface)
|
|
{
|
|
struct net_device *netdev = interface->netdev;
|
|
struct fm10k_hw *hw = &interface->hw;
|
|
|
|
/* Wait for MAC/VLAN work to finish */
|
|
while (test_bit(__FM10K_MACVLAN_SCHED, interface->state))
|
|
usleep_range(1000, 2000);
|
|
|
|
/* Cancel pending MAC/VLAN requests */
|
|
fm10k_clear_macvlan_queue(interface, interface->glort, true);
|
|
|
|
fm10k_mbx_lock(interface);
|
|
|
|
/* clear the logical port state on lower device if host's mailbox is
|
|
* ready
|
|
*/
|
|
if (fm10k_host_mbx_ready(interface))
|
|
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
|
|
*
|
|
* Obtain 64bit statistics in a way that is safe for both 32bit and 64bit
|
|
* architectures.
|
|
*/
|
|
static void 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 = READ_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 = READ_ONCE(interface->tx_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;
|
|
}
|
|
|
|
int fm10k_setup_tc(struct net_device *dev, u8 tc)
|
|
{
|
|
struct fm10k_intfc *interface = netdev_priv(dev);
|
|
int err;
|
|
|
|
/* 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);
|
|
|
|
err = fm10k_init_queueing_scheme(interface);
|
|
if (err)
|
|
goto err_queueing_scheme;
|
|
|
|
err = fm10k_mbx_request_irq(interface);
|
|
if (err)
|
|
goto err_mbx_irq;
|
|
|
|
err = netif_running(dev) ? fm10k_open(dev) : 0;
|
|
if (err)
|
|
goto err_open;
|
|
|
|
/* flag to indicate SWPRI has yet to be updated */
|
|
set_bit(FM10K_FLAG_SWPRI_CONFIG, interface->flags);
|
|
|
|
return 0;
|
|
err_open:
|
|
fm10k_mbx_free_irq(interface);
|
|
err_mbx_irq:
|
|
fm10k_clear_queueing_scheme(interface);
|
|
err_queueing_scheme:
|
|
netif_device_detach(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int __fm10k_setup_tc(struct net_device *dev, enum tc_setup_type type,
|
|
void *type_data)
|
|
{
|
|
struct tc_mqprio_qopt *mqprio = type_data;
|
|
|
|
if (type != TC_SETUP_QDISC_MQPRIO)
|
|
return -EOPNOTSUPP;
|
|
|
|
mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
|
|
|
|
return fm10k_setup_tc(dev, mqprio->num_tc);
|
|
}
|
|
|
|
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;
|
|
|
|
if (fm10k_host_mbx_ready(interface)) {
|
|
hw->mac.ops.update_xcast_mode(hw, glort,
|
|
FM10K_XCAST_MODE_MULTI);
|
|
fm10k_queue_mac_request(interface, glort, sdev->dev_addr,
|
|
hw->mac.default_vid, true);
|
|
}
|
|
|
|
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 = READ_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;
|
|
|
|
if (fm10k_host_mbx_ready(interface)) {
|
|
hw->mac.ops.update_xcast_mode(hw, glort,
|
|
FM10K_XCAST_MODE_NONE);
|
|
fm10k_queue_mac_request(interface, glort, sdev->dev_addr,
|
|
hw->mac.default_vid, false);
|
|
}
|
|
|
|
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;
|
|
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 netdev_features_t fm10k_features_check(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
netdev_features_t features)
|
|
{
|
|
if (!skb->encapsulation || fm10k_tx_encap_offload(skb))
|
|
return features;
|
|
|
|
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
|
|
}
|
|
|
|
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_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_udp_tunnel_add = fm10k_udp_tunnel_add,
|
|
.ndo_udp_tunnel_del = fm10k_udp_tunnel_del,
|
|
.ndo_dfwd_add_station = fm10k_dfwd_add_station,
|
|
.ndo_dfwd_del_station = fm10k_dfwd_del_station,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = fm10k_netpoll,
|
|
#endif
|
|
.ndo_features_check = fm10k_features_check,
|
|
};
|
|
|
|
#define DEFAULT_DEBUG_LEVEL_SHIFT 3
|
|
|
|
struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info)
|
|
{
|
|
netdev_features_t hw_features;
|
|
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 = BIT(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_RXHASH |
|
|
NETIF_F_RXCSUM;
|
|
|
|
/* Only the PF can support VXLAN and NVGRE tunnel offloads */
|
|
if (info->mac == fm10k_mac_pf) {
|
|
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;
|
|
|
|
dev->features |= NETIF_F_GSO_UDP_TUNNEL;
|
|
}
|
|
|
|
/* all features defined to this point should be changeable */
|
|
hw_features = dev->features;
|
|
|
|
/* allow user to enable L2 forwarding acceleration */
|
|
hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
|
|
|
|
/* configure VLAN features */
|
|
dev->vlan_features |= dev->features;
|
|
|
|
/* 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;
|
|
|
|
dev->hw_features |= hw_features;
|
|
|
|
/* MTU range: 68 - 15342 */
|
|
dev->min_mtu = ETH_MIN_MTU;
|
|
dev->max_mtu = FM10K_MAX_JUMBO_FRAME_SIZE;
|
|
|
|
return dev;
|
|
}
|