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author | Felix Fietkau <nbd@openwrt.org> | 2015-11-07 16:22:08 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2015-11-07 16:22:08 +0000 |
commit | ad133b57a94165e1289ac63b38139047a1450dbb (patch) | |
tree | b59d5e2f60aface2db357eef2bd87d5d448c26a3 /target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch | |
parent | 86a46a817ba7cfab4963818f9c97508f1f835762 (diff) | |
download | upstream-ad133b57a94165e1289ac63b38139047a1450dbb.tar.gz upstream-ad133b57a94165e1289ac63b38139047a1450dbb.tar.bz2 upstream-ad133b57a94165e1289ac63b38139047a1450dbb.zip |
kernel: remove linux 4.0 support
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 47412
Diffstat (limited to 'target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch')
-rw-r--r-- | target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch b/target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch deleted file mode 100644 index 2a2df608b9..0000000000 --- a/target/linux/generic/patches-4.0/072-02-bgmac-implement-GRO-and-use-build_skb.patch +++ /dev/null @@ -1,189 +0,0 @@ -From: Felix Fietkau <nbd@openwrt.org> -Date: Mon, 23 Mar 2015 02:41:25 +0100 -Subject: [PATCH] bgmac: implement GRO and use build_skb - -This improves performance for routing and local rx - -Signed-off-by: Felix Fietkau <nbd@openwrt.org> ---- - ---- a/drivers/net/ethernet/broadcom/bgmac.c -+++ b/drivers/net/ethernet/broadcom/bgmac.c -@@ -276,31 +276,31 @@ static int bgmac_dma_rx_skb_for_slot(str - struct bgmac_slot_info *slot) - { - struct device *dma_dev = bgmac->core->dma_dev; -- struct sk_buff *skb; - dma_addr_t dma_addr; - struct bgmac_rx_header *rx; -+ void *buf; - - /* Alloc skb */ -- skb = netdev_alloc_skb(bgmac->net_dev, BGMAC_RX_BUF_SIZE); -- if (!skb) -+ buf = netdev_alloc_frag(BGMAC_RX_ALLOC_SIZE); -+ if (!buf) - return -ENOMEM; - - /* Poison - if everything goes fine, hardware will overwrite it */ -- rx = (struct bgmac_rx_header *)skb->data; -+ rx = buf; - rx->len = cpu_to_le16(0xdead); - rx->flags = cpu_to_le16(0xbeef); - - /* Map skb for the DMA */ -- dma_addr = dma_map_single(dma_dev, skb->data, -- BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); -+ dma_addr = dma_map_single(dma_dev, buf, BGMAC_RX_BUF_SIZE, -+ DMA_FROM_DEVICE); - if (dma_mapping_error(dma_dev, dma_addr)) { - bgmac_err(bgmac, "DMA mapping error\n"); -- dev_kfree_skb(skb); -+ put_page(virt_to_head_page(buf)); - return -ENOMEM; - } - - /* Update the slot */ -- slot->skb = skb; -+ slot->buf = buf; - slot->dma_addr = dma_addr; - - return 0; -@@ -343,8 +343,9 @@ static int bgmac_dma_rx_read(struct bgma - while (ring->start != ring->end) { - struct device *dma_dev = bgmac->core->dma_dev; - struct bgmac_slot_info *slot = &ring->slots[ring->start]; -- struct sk_buff *skb = slot->skb; -- struct bgmac_rx_header *rx; -+ struct bgmac_rx_header *rx = slot->buf; -+ struct sk_buff *skb; -+ void *buf = slot->buf; - u16 len, flags; - - /* Unmap buffer to make it accessible to the CPU */ -@@ -352,7 +353,6 @@ static int bgmac_dma_rx_read(struct bgma - BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); - - /* Get info from the header */ -- rx = (struct bgmac_rx_header *)skb->data; - len = le16_to_cpu(rx->len); - flags = le16_to_cpu(rx->flags); - -@@ -393,12 +393,13 @@ static int bgmac_dma_rx_read(struct bgma - dma_unmap_single(dma_dev, old_dma_addr, - BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); - -+ skb = build_skb(buf, BGMAC_RX_ALLOC_SIZE); - skb_put(skb, BGMAC_RX_FRAME_OFFSET + len); - skb_pull(skb, BGMAC_RX_FRAME_OFFSET); - - skb_checksum_none_assert(skb); - skb->protocol = eth_type_trans(skb, bgmac->net_dev); -- netif_receive_skb(skb); -+ napi_gro_receive(&bgmac->napi, skb); - handled++; - } while (0); - -@@ -434,12 +435,11 @@ static bool bgmac_dma_unaligned(struct b - return false; - } - --static void bgmac_dma_ring_free(struct bgmac *bgmac, -- struct bgmac_dma_ring *ring) -+static void bgmac_dma_tx_ring_free(struct bgmac *bgmac, -+ struct bgmac_dma_ring *ring) - { - struct device *dma_dev = bgmac->core->dma_dev; - struct bgmac_slot_info *slot; -- int size; - int i; - - for (i = 0; i < ring->num_slots; i++) { -@@ -451,23 +451,55 @@ static void bgmac_dma_ring_free(struct b - dev_kfree_skb(slot->skb); - } - } -+} -+ -+static void bgmac_dma_rx_ring_free(struct bgmac *bgmac, -+ struct bgmac_dma_ring *ring) -+{ -+ struct device *dma_dev = bgmac->core->dma_dev; -+ struct bgmac_slot_info *slot; -+ int i; -+ -+ for (i = 0; i < ring->num_slots; i++) { -+ slot = &ring->slots[i]; -+ if (!slot->buf) -+ continue; - -- if (ring->cpu_base) { -- /* Free ring of descriptors */ -- size = ring->num_slots * sizeof(struct bgmac_dma_desc); -- dma_free_coherent(dma_dev, size, ring->cpu_base, -- ring->dma_base); -+ if (slot->dma_addr) -+ dma_unmap_single(dma_dev, slot->dma_addr, -+ BGMAC_RX_BUF_SIZE, -+ DMA_FROM_DEVICE); -+ put_page(virt_to_head_page(slot->buf)); - } - } - -+static void bgmac_dma_ring_desc_free(struct bgmac *bgmac, -+ struct bgmac_dma_ring *ring) -+{ -+ struct device *dma_dev = bgmac->core->dma_dev; -+ int size; -+ -+ if (!ring->cpu_base) -+ return; -+ -+ /* Free ring of descriptors */ -+ size = ring->num_slots * sizeof(struct bgmac_dma_desc); -+ dma_free_coherent(dma_dev, size, ring->cpu_base, -+ ring->dma_base); -+} -+ - static void bgmac_dma_free(struct bgmac *bgmac) - { - int i; - -- for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) -- bgmac_dma_ring_free(bgmac, &bgmac->tx_ring[i]); -- for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) -- bgmac_dma_ring_free(bgmac, &bgmac->rx_ring[i]); -+ for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { -+ bgmac_dma_tx_ring_free(bgmac, &bgmac->tx_ring[i]); -+ bgmac_dma_ring_desc_free(bgmac, &bgmac->tx_ring[i]); -+ } -+ for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { -+ bgmac_dma_rx_ring_free(bgmac, &bgmac->rx_ring[i]); -+ bgmac_dma_ring_desc_free(bgmac, &bgmac->rx_ring[i]); -+ } - } - - static int bgmac_dma_alloc(struct bgmac *bgmac) ---- a/drivers/net/ethernet/broadcom/bgmac.h -+++ b/drivers/net/ethernet/broadcom/bgmac.h -@@ -362,6 +362,8 @@ - #define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */ - #define BGMAC_RX_MAX_FRAME_SIZE 1536 /* Copied from b44/tg3 */ - #define BGMAC_RX_BUF_SIZE (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE) -+#define BGMAC_RX_ALLOC_SIZE (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE) + \ -+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) - - #define BGMAC_BFL_ENETROBO 0x0010 /* has ephy roboswitch spi */ - #define BGMAC_BFL_ENETADM 0x0080 /* has ADMtek switch */ -@@ -383,7 +385,10 @@ - #define ETHER_MAX_LEN 1518 - - struct bgmac_slot_info { -- struct sk_buff *skb; -+ union { -+ struct sk_buff *skb; -+ void *buf; -+ }; - dma_addr_t dma_addr; - }; - |