From: Hauke Mehrtens Date: Sun, 29 Sep 2013 11:54:58 +0000 (+0200) Subject: bgmac: add support for Byte Queue Limits X-Git-Tag: accepted/tizen/common/20141203.182822~1141^2~262 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=49a467b4f607245d44d21627999ab75abe2c7f8b;p=platform%2Fkernel%2Flinux-arm64.git bgmac: add support for Byte Queue Limits This makes it possible to use some more advanced queuing techniques with this driver. When multi queue support will be added some changes to Byte Queue handling is needed. Signed-off-by: Hauke Mehrtens Reviewed-by: Eric Dumazet Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index 249468f..7eca5a1 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -149,6 +149,8 @@ static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, dma_desc->ctl0 = cpu_to_le32(ctl0); dma_desc->ctl1 = cpu_to_le32(ctl1); + netdev_sent_queue(net_dev, skb->len); + wmb(); /* Increase ring->end to point empty slot. We tell hardware the first @@ -178,6 +180,7 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) struct device *dma_dev = bgmac->core->dma_dev; int empty_slot; bool freed = false; + unsigned bytes_compl = 0, pkts_compl = 0; /* The last slot that hardware didn't consume yet */ empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); @@ -195,6 +198,9 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) slot->skb->len, DMA_TO_DEVICE); slot->dma_addr = 0; + bytes_compl += slot->skb->len; + pkts_compl++; + /* Free memory! :) */ dev_kfree_skb(slot->skb); slot->skb = NULL; @@ -208,6 +214,8 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) freed = true; } + netdev_completed_queue(bgmac->net_dev, pkts_compl, bytes_compl); + if (freed && netif_queue_stopped(bgmac->net_dev)) netif_wake_queue(bgmac->net_dev); } @@ -988,6 +996,8 @@ static void bgmac_chip_reset(struct bgmac *bgmac) bgmac_miiconfig(bgmac); bgmac_phy_init(bgmac); + netdev_reset_queue(bgmac->net_dev); + bgmac->int_status = 0; }