From c9f140ebb00891c5bfd6b5cdd0552493bcbeac20 Mon Sep 17 00:00:00 2001 From: "Lendacky, Thomas" Date: Thu, 20 Nov 2014 11:03:44 -0600 Subject: [PATCH] amd-xgbe: Separate Tx/Rx ring data fields into new structs Move the Tx and Rx related fields within the xgbe_ring_data struct into their own structs in order to more easily see what fields are used for each operation. Signed-off-by: Tom Lendacky Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/xgbe/xgbe-desc.c | 36 +++++++++++++++---------------- drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 14 ++++++------ drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 28 ++++++++++++------------ drivers/net/ethernet/amd/xgbe/xgbe.h | 22 +++++++++++++------ 4 files changed, 54 insertions(+), 46 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c index e6b9f54..3c7c386 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c @@ -335,11 +335,11 @@ static int xgbe_map_rx_buffer(struct xgbe_prv_data *pdata, } /* Set up the header page info */ - xgbe_set_buffer_data(&rdata->rx_hdr, &ring->rx_hdr_pa, + xgbe_set_buffer_data(&rdata->rx.hdr, &ring->rx_hdr_pa, XGBE_SKB_ALLOC_SIZE); /* Set up the buffer page info */ - xgbe_set_buffer_data(&rdata->rx_buf, &ring->rx_buf_pa, + xgbe_set_buffer_data(&rdata->rx.buf, &ring->rx_buf_pa, pdata->rx_buf_size); return 0; @@ -451,31 +451,29 @@ static void xgbe_unmap_rdata(struct xgbe_prv_data *pdata, rdata->skb = NULL; } - if (rdata->rx_hdr.pa.pages) - put_page(rdata->rx_hdr.pa.pages); + if (rdata->rx.hdr.pa.pages) + put_page(rdata->rx.hdr.pa.pages); - if (rdata->rx_hdr.pa_unmap.pages) { - dma_unmap_page(pdata->dev, rdata->rx_hdr.pa_unmap.pages_dma, - rdata->rx_hdr.pa_unmap.pages_len, + if (rdata->rx.hdr.pa_unmap.pages) { + dma_unmap_page(pdata->dev, rdata->rx.hdr.pa_unmap.pages_dma, + rdata->rx.hdr.pa_unmap.pages_len, DMA_FROM_DEVICE); - put_page(rdata->rx_hdr.pa_unmap.pages); + put_page(rdata->rx.hdr.pa_unmap.pages); } - if (rdata->rx_buf.pa.pages) - put_page(rdata->rx_buf.pa.pages); + if (rdata->rx.buf.pa.pages) + put_page(rdata->rx.buf.pa.pages); - if (rdata->rx_buf.pa_unmap.pages) { - dma_unmap_page(pdata->dev, rdata->rx_buf.pa_unmap.pages_dma, - rdata->rx_buf.pa_unmap.pages_len, + if (rdata->rx.buf.pa_unmap.pages) { + dma_unmap_page(pdata->dev, rdata->rx.buf.pa_unmap.pages_dma, + rdata->rx.buf.pa_unmap.pages_len, DMA_FROM_DEVICE); - put_page(rdata->rx_buf.pa_unmap.pages); + put_page(rdata->rx.buf.pa_unmap.pages); } - memset(&rdata->rx_hdr, 0, sizeof(rdata->rx_hdr)); - memset(&rdata->rx_buf, 0, sizeof(rdata->rx_buf)); + memset(&rdata->tx, 0, sizeof(rdata->tx)); + memset(&rdata->rx, 0, sizeof(rdata->rx)); - rdata->tso_header = 0; - rdata->len = 0; rdata->interrupt = 0; rdata->mapped_as_page = 0; @@ -534,7 +532,7 @@ static int xgbe_map_tx_skb(struct xgbe_channel *channel, struct sk_buff *skb) } rdata->skb_dma = skb_dma; rdata->skb_dma_len = packet->header_len; - rdata->tso_header = 1; + rdata->tx.tso_header = 1; offset = packet->header_len; diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c index 72425ff..2908ad1 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c @@ -1085,10 +1085,10 @@ static void xgbe_rx_desc_reset(struct xgbe_ring_data *rdata) * Set buffer 2 (hi) address to buffer dma address (hi) and * set control bits OWN and INTE */ - rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->rx_hdr.dma)); - rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->rx_hdr.dma)); - rdesc->desc2 = cpu_to_le32(lower_32_bits(rdata->rx_buf.dma)); - rdesc->desc3 = cpu_to_le32(upper_32_bits(rdata->rx_buf.dma)); + rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->rx.hdr.dma)); + rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->rx.hdr.dma)); + rdesc->desc2 = cpu_to_le32(lower_32_bits(rdata->rx.buf.dma)); + rdesc->desc3 = cpu_to_le32(upper_32_bits(rdata->rx.buf.dma)); XGMAC_SET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, INTE, rdata->interrupt ? 1 : 0); @@ -1586,8 +1586,8 @@ static int xgbe_dev_read(struct xgbe_channel *channel) /* Get the header length */ if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, FD)) - rdata->hdr_len = XGMAC_GET_BITS_LE(rdesc->desc2, - RX_NORMAL_DESC2, HL); + rdata->rx.hdr_len = XGMAC_GET_BITS_LE(rdesc->desc2, + RX_NORMAL_DESC2, HL); /* Get the RSS hash */ if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, RSV)) { @@ -1610,7 +1610,7 @@ static int xgbe_dev_read(struct xgbe_channel *channel) } /* Get the packet length */ - rdata->len = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, PL); + rdata->rx.len = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, PL); if (!XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, LD)) { /* Not all the data has been transferred for this packet */ diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index eebb787..46ea423 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c @@ -1747,14 +1747,14 @@ static struct sk_buff *xgbe_create_skb(struct xgbe_prv_data *pdata, u8 *packet; unsigned int copy_len; - skb = netdev_alloc_skb_ip_align(netdev, rdata->rx_hdr.dma_len); + skb = netdev_alloc_skb_ip_align(netdev, rdata->rx.hdr.dma_len); if (!skb) return NULL; - packet = page_address(rdata->rx_hdr.pa.pages) + - rdata->rx_hdr.pa.pages_offset; - copy_len = (rdata->hdr_len) ? rdata->hdr_len : *len; - copy_len = min(rdata->rx_hdr.dma_len, copy_len); + packet = page_address(rdata->rx.hdr.pa.pages) + + rdata->rx.hdr.pa.pages_offset; + copy_len = (rdata->rx.hdr_len) ? rdata->rx.hdr_len : *len; + copy_len = min(rdata->rx.hdr.dma_len, copy_len); skb_copy_to_linear_data(skb, packet, copy_len); skb_put(skb, copy_len); @@ -1900,13 +1900,13 @@ read_again: } if (!context) { - put_len = rdata->len - len; + put_len = rdata->rx.len - len; len += put_len; if (!skb) { dma_sync_single_for_cpu(pdata->dev, - rdata->rx_hdr.dma, - rdata->rx_hdr.dma_len, + rdata->rx.hdr.dma, + rdata->rx.hdr.dma_len, DMA_FROM_DEVICE); skb = xgbe_create_skb(pdata, rdata, &put_len); @@ -1918,15 +1918,15 @@ read_again: if (put_len) { dma_sync_single_for_cpu(pdata->dev, - rdata->rx_buf.dma, - rdata->rx_buf.dma_len, + rdata->rx.buf.dma, + rdata->rx.buf.dma_len, DMA_FROM_DEVICE); skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, - rdata->rx_buf.pa.pages, - rdata->rx_buf.pa.pages_offset, - put_len, rdata->rx_buf.dma_len); - rdata->rx_buf.pa.pages = NULL; + rdata->rx.buf.pa.pages, + rdata->rx.buf.pa.pages_offset, + put_len, rdata->rx.buf.dma_len); + rdata->rx.buf.pa.pages = NULL; } } diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 46ce544..41ce6e3 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -271,6 +271,20 @@ struct xgbe_buffer_data { unsigned int dma_len; }; +/* Tx-related ring data */ +struct xgbe_tx_ring_data { + unsigned int tso_header; /* TSO header indicator */ +}; + +/* Rx-related ring data */ +struct xgbe_rx_ring_data { + struct xgbe_buffer_data hdr; /* Header locations */ + struct xgbe_buffer_data buf; /* Payload locations */ + + unsigned short hdr_len; /* Length of received header */ + unsigned short len; /* Length of received packet */ +}; + /* Structure used to hold information related to the descriptor * and the packet associated with the descriptor (always use * use the XGBE_GET_DESC_DATA macro to access this data from the ring) @@ -282,13 +296,9 @@ struct xgbe_ring_data { struct sk_buff *skb; /* Virtual address of SKB */ dma_addr_t skb_dma; /* DMA address of SKB data */ unsigned int skb_dma_len; /* Length of SKB DMA area */ - unsigned int tso_header; /* TSO header indicator */ - struct xgbe_buffer_data rx_hdr; /* Header locations */ - struct xgbe_buffer_data rx_buf; /* Payload locations */ - - unsigned short hdr_len; /* Length of received header */ - unsigned short len; /* Length of received Rx packet */ + struct xgbe_tx_ring_data tx; /* Tx-related data */ + struct xgbe_rx_ring_data rx; /* Rx-related data */ unsigned int interrupt; /* Interrupt indicator */ -- 2.7.4