diff options
Diffstat (limited to 'target/linux/lantiq/patches-5.10/0702-v5.16-net-lantiq-add-support-for-jumbo-frames.patch')
| -rw-r--r-- | target/linux/lantiq/patches-5.10/0702-v5.16-net-lantiq-add-support-for-jumbo-frames.patch | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/target/linux/lantiq/patches-5.10/0702-v5.16-net-lantiq-add-support-for-jumbo-frames.patch b/target/linux/lantiq/patches-5.10/0702-v5.16-net-lantiq-add-support-for-jumbo-frames.patch deleted file mode 100644 index 5bbf752dba..0000000000 --- a/target/linux/lantiq/patches-5.10/0702-v5.16-net-lantiq-add-support-for-jumbo-frames.patch +++ /dev/null @@ -1,145 +0,0 @@ -From 998ac358019e491217e752bc6dcbb3afb2a6fa3e Mon Sep 17 00:00:00 2001 -From: Aleksander Jan Bajkowski <olek2@wp.pl> -Date: Sun, 19 Sep 2021 20:24:28 +0200 -Subject: [PATCH] net: lantiq: add support for jumbo frames - -Add support for jumbo frames. Full support for jumbo frames requires -changes in the DSA switch driver (lantiq_gswip.c). - -Tested on BT Hone Hub 5A. - -Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/lantiq_xrx200.c | 64 +++++++++++++++++++++++++--- - 1 file changed, 57 insertions(+), 7 deletions(-) - ---- a/drivers/net/ethernet/lantiq_xrx200.c -+++ b/drivers/net/ethernet/lantiq_xrx200.c -@@ -14,13 +14,15 @@ - #include <linux/clk.h> - #include <linux/delay.h> - -+#include <linux/if_vlan.h> -+ - #include <linux/of_net.h> - #include <linux/of_platform.h> - - #include <xway_dma.h> - - /* DMA */ --#define XRX200_DMA_DATA_LEN 0x600 -+#define XRX200_DMA_DATA_LEN (SZ_64K - 1) - #define XRX200_DMA_RX 0 - #define XRX200_DMA_TX 1 - -@@ -106,7 +108,8 @@ static void xrx200_flush_dma(struct xrx2 - break; - - desc->ctl = LTQ_DMA_OWN | LTQ_DMA_RX_OFFSET(NET_IP_ALIGN) | -- XRX200_DMA_DATA_LEN; -+ (ch->priv->net_dev->mtu + VLAN_ETH_HLEN + -+ ETH_FCS_LEN); - ch->dma.desc++; - ch->dma.desc %= LTQ_DESC_NUM; - } -@@ -154,19 +157,20 @@ static int xrx200_close(struct net_devic - - static int xrx200_alloc_skb(struct xrx200_chan *ch) - { -+ int len = ch->priv->net_dev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN; - struct sk_buff *skb = ch->skb[ch->dma.desc]; - dma_addr_t mapping; - int ret = 0; - - ch->skb[ch->dma.desc] = netdev_alloc_skb_ip_align(ch->priv->net_dev, -- XRX200_DMA_DATA_LEN); -+ len); - if (!ch->skb[ch->dma.desc]) { - ret = -ENOMEM; - goto skip; - } - - mapping = dma_map_single(ch->priv->dev, ch->skb[ch->dma.desc]->data, -- XRX200_DMA_DATA_LEN, DMA_FROM_DEVICE); -+ len, DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(ch->priv->dev, mapping))) { - dev_kfree_skb_any(ch->skb[ch->dma.desc]); - ch->skb[ch->dma.desc] = skb; -@@ -179,8 +183,7 @@ static int xrx200_alloc_skb(struct xrx20 - wmb(); - skip: - ch->dma.desc_base[ch->dma.desc].ctl = -- LTQ_DMA_OWN | LTQ_DMA_RX_OFFSET(NET_IP_ALIGN) | -- XRX200_DMA_DATA_LEN; -+ LTQ_DMA_OWN | LTQ_DMA_RX_OFFSET(NET_IP_ALIGN) | len; - - return ret; - } -@@ -340,10 +343,57 @@ err_drop: - return NETDEV_TX_OK; - } - -+static int -+xrx200_change_mtu(struct net_device *net_dev, int new_mtu) -+{ -+ struct xrx200_priv *priv = netdev_priv(net_dev); -+ struct xrx200_chan *ch_rx = &priv->chan_rx; -+ int old_mtu = net_dev->mtu; -+ bool running = false; -+ struct sk_buff *skb; -+ int curr_desc; -+ int ret = 0; -+ -+ net_dev->mtu = new_mtu; -+ -+ if (new_mtu <= old_mtu) -+ return ret; -+ -+ running = netif_running(net_dev); -+ if (running) { -+ napi_disable(&ch_rx->napi); -+ ltq_dma_close(&ch_rx->dma); -+ } -+ -+ xrx200_poll_rx(&ch_rx->napi, LTQ_DESC_NUM); -+ curr_desc = ch_rx->dma.desc; -+ -+ for (ch_rx->dma.desc = 0; ch_rx->dma.desc < LTQ_DESC_NUM; -+ ch_rx->dma.desc++) { -+ skb = ch_rx->skb[ch_rx->dma.desc]; -+ ret = xrx200_alloc_skb(ch_rx); -+ if (ret) { -+ net_dev->mtu = old_mtu; -+ break; -+ } -+ dev_kfree_skb_any(skb); -+ } -+ -+ ch_rx->dma.desc = curr_desc; -+ if (running) { -+ napi_enable(&ch_rx->napi); -+ ltq_dma_open(&ch_rx->dma); -+ ltq_dma_enable_irq(&ch_rx->dma); -+ } -+ -+ return ret; -+} -+ - static const struct net_device_ops xrx200_netdev_ops = { - .ndo_open = xrx200_open, - .ndo_stop = xrx200_close, - .ndo_start_xmit = xrx200_start_xmit, -+ .ndo_change_mtu = xrx200_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, - }; -@@ -454,7 +504,7 @@ static int xrx200_probe(struct platform_ - net_dev->netdev_ops = &xrx200_netdev_ops; - SET_NETDEV_DEV(net_dev, dev); - net_dev->min_mtu = ETH_ZLEN; -- net_dev->max_mtu = XRX200_DMA_DATA_LEN; -+ net_dev->max_mtu = XRX200_DMA_DATA_LEN - VLAN_ETH_HLEN - ETH_FCS_LEN; - - /* load the memory ranges */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |