From 09ee3b4a249dd5c64da7d25a52a4ce42a49d647a Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Thu, 29 Nov 2018 17:08:36 +0900 Subject: net: ethernet: ave: Increase descriptors to improve performance To improve performance, this increases Rx descriptor to 256, Tx descriptor to 64, and adjusts NAPI weight to NAPI_POLL_WEIGHT. Signed-off-by: Kunihiko Hayashi Signed-off-by: David S. Miller --- drivers/net/ethernet/socionext/sni_ave.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet/socionext') diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c index 6732f5cbde08..29b5b12bce6c 100644 --- a/drivers/net/ethernet/socionext/sni_ave.c +++ b/drivers/net/ethernet/socionext/sni_ave.c @@ -185,8 +185,8 @@ NETIF_MSG_TX_ERR) /* Parameter for descriptor */ -#define AVE_NR_TXDESC 32 /* Tx descriptor */ -#define AVE_NR_RXDESC 64 /* Rx descriptor */ +#define AVE_NR_TXDESC 64 /* Tx descriptor */ +#define AVE_NR_RXDESC 256 /* Rx descriptor */ #define AVE_DESC_OFS_CMDSTS 0 #define AVE_DESC_OFS_ADDRL 4 @@ -1689,9 +1689,10 @@ static int ave_probe(struct platform_device *pdev) pdev->name, pdev->id); /* Register as a NAPI supported driver */ - netif_napi_add(ndev, &priv->napi_rx, ave_napi_poll_rx, priv->rx.ndesc); + netif_napi_add(ndev, &priv->napi_rx, ave_napi_poll_rx, + NAPI_POLL_WEIGHT); netif_tx_napi_add(ndev, &priv->napi_tx, ave_napi_poll_tx, - priv->tx.ndesc); + NAPI_POLL_WEIGHT); platform_set_drvdata(pdev, ndev); -- cgit v1.2.3 From 88113957ddb7b7d5451e28cd708c82ea7e63b097 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Thu, 29 Nov 2018 17:08:37 +0900 Subject: net: ethernet: ave: Replace NET_IP_ALIGN with AVE_FRAME_HEADROOM In commit 26a4676faa1a ("arm64: mm: define NET_IP_ALIGN to 0"), AVE controller affects this modification because the controller forces to ignore lower 2bits of buffer start address, and make 2-byte headroom, that is, data reception starts from (buffer + 2). This patch defines AVE_FRAME_HEADROOM macro as hardware-specific value, and replaces NET_IP_ALIGN with it. Signed-off-by: Kunihiko Hayashi Signed-off-by: David S. Miller --- drivers/net/ethernet/socionext/sni_ave.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/net/ethernet/socionext') diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c index 29b5b12bce6c..0da11344d035 100644 --- a/drivers/net/ethernet/socionext/sni_ave.c +++ b/drivers/net/ethernet/socionext/sni_ave.c @@ -194,6 +194,7 @@ /* Parameter for ethernet frame */ #define AVE_MAX_ETHFRAME 1518 +#define AVE_FRAME_HEADROOM 2 /* Parameter for interrupt */ #define AVE_INTM_COUNT 20 @@ -576,12 +577,13 @@ static int ave_rxdesc_prepare(struct net_device *ndev, int entry) skb = priv->rx.desc[entry].skbs; if (!skb) { - skb = netdev_alloc_skb_ip_align(ndev, - AVE_MAX_ETHFRAME); + skb = netdev_alloc_skb(ndev, AVE_MAX_ETHFRAME); if (!skb) { netdev_err(ndev, "can't allocate skb for Rx\n"); return -ENOMEM; } + skb->data += AVE_FRAME_HEADROOM; + skb->tail += AVE_FRAME_HEADROOM; } /* set disable to cmdsts */ @@ -594,12 +596,12 @@ static int ave_rxdesc_prepare(struct net_device *ndev, int entry) * - Rx buffer begins with 2 byte headroom, and data will be put from * (buffer + 2). * To satisfy this, specify the address to put back the buffer - * pointer advanced by NET_IP_ALIGN by netdev_alloc_skb_ip_align(), - * and expand the map size by NET_IP_ALIGN. + * pointer advanced by AVE_FRAME_HEADROOM, and expand the map size + * by AVE_FRAME_HEADROOM. */ ret = ave_dma_map(ndev, &priv->rx.desc[entry], - skb->data - NET_IP_ALIGN, - AVE_MAX_ETHFRAME + NET_IP_ALIGN, + skb->data - AVE_FRAME_HEADROOM, + AVE_MAX_ETHFRAME + AVE_FRAME_HEADROOM, DMA_FROM_DEVICE, &paddr); if (ret) { netdev_err(ndev, "can't map skb for Rx\n"); -- cgit v1.2.3 From d75d0e874ffe929dec143d331b53e4bfceb10af2 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Thu, 29 Nov 2018 17:08:38 +0900 Subject: net: ethernet: ave: Add MODULE_AUTHOR and MAINTAINERS entry Add missing MODULE_AUTHOR of ave driver and an entry to MAINTAINERS. Signed-off-by: Kunihiko Hayashi Signed-off-by: David S. Miller --- drivers/net/ethernet/socionext/sni_ave.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/ethernet/socionext') diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c index 0da11344d035..7c7cd9d94bcc 100644 --- a/drivers/net/ethernet/socionext/sni_ave.c +++ b/drivers/net/ethernet/socionext/sni_ave.c @@ -1916,5 +1916,6 @@ static struct platform_driver ave_driver = { }; module_platform_driver(ave_driver); +MODULE_AUTHOR("Kunihiko Hayashi "); MODULE_DESCRIPTION("Socionext UniPhier AVE ethernet driver"); MODULE_LICENSE("GPL v2"); -- cgit v1.2.3