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Diffstat (limited to 'target/linux/generic/pending-3.18/077-02-bgmac-implement-GRO-and-use-build_skb.patch')
-rw-r--r--target/linux/generic/pending-3.18/077-02-bgmac-implement-GRO-and-use-build_skb.patch189
1 files changed, 0 insertions, 189 deletions
diff --git a/target/linux/generic/pending-3.18/077-02-bgmac-implement-GRO-and-use-build_skb.patch b/target/linux/generic/pending-3.18/077-02-bgmac-implement-GRO-and-use-build_skb.patch
deleted file mode 100644
index 8dc5242..0000000
--- a/target/linux/generic/pending-3.18/077-02-bgmac-implement-GRO-and-use-build_skb.patch
+++ /dev/null
@@ -1,189 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-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@nbd.name>
----
-
---- 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;
- };
-
generated by cgit v1.1 at 2024-06-13 01:35:49 +0000