diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/falcon/rx.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon/rx.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/net/ethernet/sfc/falcon/rx.c b/drivers/net/ethernet/sfc/falcon/rx.c index 02456ed13a7d..f69fcf6caca8 100644 --- a/drivers/net/ethernet/sfc/falcon/rx.c +++ b/drivers/net/ethernet/sfc/falcon/rx.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2005-2013 Solarflare Communications Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation, incorporated herein by reference. */ #include <linux/socket.h> @@ -113,6 +110,8 @@ static struct page *ef4_reuse_page(struct ef4_rx_queue *rx_queue) struct ef4_rx_page_state *state; unsigned index; + if (unlikely(!rx_queue->page_ring)) + return NULL; index = rx_queue->page_remove & rx_queue->page_ptr_mask; page = rx_queue->page_ring[index]; if (page == NULL) @@ -143,6 +142,7 @@ static struct page *ef4_reuse_page(struct ef4_rx_queue *rx_queue) * ef4_init_rx_buffers - create EF4_RX_BATCH page-based RX buffers * * @rx_queue: Efx RX queue + * @atomic: control memory allocation flags * * This allocates a batch of pages, maps them for DMA, and populates * struct ef4_rx_buffers for each one. Return a negative error code or @@ -295,6 +295,9 @@ static void ef4_recycle_rx_pages(struct ef4_channel *channel, { struct ef4_rx_queue *rx_queue = ef4_channel_get_rx_queue(channel); + if (unlikely(!rx_queue->page_ring)) + return; + do { ef4_recycle_rx_page(channel, rx_buf); rx_buf = ef4_rx_buf_next(rx_queue, rx_buf); @@ -319,6 +322,7 @@ static void ef4_discard_rx_packet(struct ef4_channel *channel, * This will aim to fill the RX descriptor queue up to * @rx_queue->@max_fill. If there is insufficient atomic * memory to do so, a slow fill will be scheduled. + * @atomic: control memory allocation flags * * The caller must provide serialisation (none is used here). In practise, * this means this function must run from the NAPI handler, or be called @@ -378,7 +382,8 @@ void ef4_fast_push_rx_descriptors(struct ef4_rx_queue *rx_queue, bool atomic) void ef4_rx_slow_fill(struct timer_list *t) { - struct ef4_rx_queue *rx_queue = from_timer(rx_queue, t, slow_fill); + struct ef4_rx_queue *rx_queue = timer_container_of(rx_queue, t, + slow_fill); /* Post an event to cause NAPI to run and refill the queue */ ef4_nic_generate_fill_event(rx_queue); @@ -427,7 +432,6 @@ ef4_rx_packet_gro(struct ef4_channel *channel, struct ef4_rx_buffer *rx_buf, unsigned int n_frags, u8 *eh) { struct napi_struct *napi = &channel->napi_str; - gro_result_t gro_result; struct ef4_nic *efx = channel->efx; struct sk_buff *skb; @@ -463,9 +467,7 @@ ef4_rx_packet_gro(struct ef4_channel *channel, struct ef4_rx_buffer *rx_buf, skb_record_rx_queue(skb, channel->rx_queue.core_index); - gro_result = napi_gro_frags(napi); - if (gro_result != GRO_DROP) - channel->irq_mod_score += 2; + napi_gro_frags(napi); } /* Allocate and construct an SKB around page fragments */ @@ -717,12 +719,14 @@ static void ef4_init_rx_recycle_ring(struct ef4_nic *efx, struct ef4_rx_queue *rx_queue) { unsigned int bufs_in_recycle_ring, page_ring_size; + struct iommu_domain __maybe_unused *domain; /* Set the RX recycle ring size */ #ifdef CONFIG_PPC64 bufs_in_recycle_ring = EF4_RECYCLE_RING_SIZE_IOMMU; #else - if (iommu_present(&pci_bus_type)) + domain = iommu_get_domain_for_dev(&efx->pci_dev->dev); + if (domain && domain->type != IOMMU_DOMAIN_IDENTITY) bufs_in_recycle_ring = EF4_RECYCLE_RING_SIZE_IOMMU; else bufs_in_recycle_ring = EF4_RECYCLE_RING_SIZE_NOIOMMU; @@ -732,7 +736,10 @@ static void ef4_init_rx_recycle_ring(struct ef4_nic *efx, efx->rx_bufs_per_page); rx_queue->page_ring = kcalloc(page_ring_size, sizeof(*rx_queue->page_ring), GFP_KERNEL); - rx_queue->page_ptr_mask = page_ring_size - 1; + if (!rx_queue->page_ring) + rx_queue->page_ptr_mask = 0; + else + rx_queue->page_ptr_mask = page_ring_size - 1; } void ef4_init_rx_queue(struct ef4_rx_queue *rx_queue) @@ -785,7 +792,7 @@ void ef4_fini_rx_queue(struct ef4_rx_queue *rx_queue) netif_dbg(rx_queue->efx, drv, rx_queue->efx->net_dev, "shutting down RX queue %d\n", ef4_rx_queue_index(rx_queue)); - del_timer_sync(&rx_queue->slow_fill); + timer_delete_sync(&rx_queue->slow_fill); /* Release RX buffers from the current read ptr to the write ptr */ if (rx_queue->buffer) { |