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-rw-r--r--target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch209
1 files changed, 191 insertions, 18 deletions
diff --git a/target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch b/target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch
index 733af98da..0500fce8f 100644
--- a/target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch
+++ b/target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch
@@ -120,12 +120,12 @@
+ /* process received frame */
+ dma_unmap_single(NULL, rx_ring->phys_tab[i],
+ RX_SEGMENT_MRU, DMA_FROM_DEVICE);
-
-- dev = switch_port_tab[desc->sp]->netdev;
++
+ skb = build_skb(rx_ring->buff_tab[i]);
+ if (!skb)
+ break;
-+
+
+- dev = switch_port_tab[desc->sp]->netdev;
+ skb->dev = switch_port_tab[desc->sp]->netdev;
length = desc->sdl;
@@ -158,12 +158,12 @@
+ sw->frag_first->truesize += skb->truesize;
+ }
+ sw->frag_last = skb;
-+
-+ if (desc->lsd) {
-+ struct net_device *dev;
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += length;
++ if (desc->lsd) {
++ struct net_device *dev;
++
+ skb = sw->frag_first;
+ dev = skb->dev;
+ skb->protocol = eth_type_trans(skb, dev);
@@ -217,7 +217,51 @@
if (++i == RX_DESCS) {
i = 0;
desc = &(rx_ring)->desc[i];
-@@ -671,12 +709,6 @@ static int eth_xmit(struct sk_buff *skb,
+@@ -653,42 +691,60 @@ static int eth_poll(struct napi_struct *
+ return received;
+ }
+
++static void eth_set_desc(struct _tx_ring *tx_ring, int index, int index_last,
++ void *data, int len, u32 config0, u32 pmap)
++{
++ struct tx_desc *tx_desc = &(tx_ring)->desc[index];
++ unsigned int phys;
++
++ phys = dma_map_single(NULL, data, len, DMA_TO_DEVICE);
++ tx_desc->sdp = phys;
++ tx_desc->pmap = pmap;
++ tx_ring->phys_tab[index] = phys;
++
++ config0 |= len;
++ if (index == TX_DESCS - 1)
++ config0 |= END_OF_RING;
++ if (index == index_last)
++ config0 |= LAST_SEGMENT;
++
++ mb();
++ tx_desc->config0 = config0;
++}
++
+ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
+ {
+ struct port *port = netdev_priv(dev);
+ struct sw *sw = port->sw;
+ struct _tx_ring *tx_ring = sw->tx_ring;
+- struct tx_desc *tx_desc;
+- int index;
+- int len;
++ struct sk_buff *skb1;
+ char pmap = (1 << port->id);
+- unsigned int phys;
+ int nr_frags = skb_shinfo(skb)->nr_frags;
+- struct skb_frag_struct *frag;
++ int nr_desc = nr_frags;
++ int index0, index, index_last;
++ int len0;
+ unsigned int i;
+- u32 config0 = 0;
++ u32 config0;
+
if (pmap == 8)
pmap = (1 << 4);
@@ -226,21 +270,132 @@
- dev->stats.tx_errors++;
- return NETDEV_TX_OK;
- }
--
++ skb_walk_frags(skb, skb1)
++ nr_desc++;
+
spin_lock(&tx_lock);
- if ((tx_ring->num_used + nr_frags) >= TX_DESCS) {
-@@ -701,8 +733,7 @@ static int eth_xmit(struct sk_buff *skb,
+- if ((tx_ring->num_used + nr_frags) >= TX_DESCS) {
++ if ((tx_ring->num_used + nr_desc + 1) >= TX_DESCS) {
+ clear_tx_desc(sw);
+- if ((tx_ring->num_used + nr_frags) >= TX_DESCS) {
++ if ((tx_ring->num_used + nr_desc + 1) >= TX_DESCS) {
+ spin_unlock(&tx_lock);
+ return NETDEV_TX_BUSY;
+ }
+ }
+
+- index = tx_ring->cur_index;
+- tx_ring->cur_index = ((tx_ring->cur_index + nr_frags + 1) % TX_DESCS);
++ index = index0 = tx_ring->cur_index;
++ index_last = (index0 + nr_desc) % TX_DESCS;
++ tx_ring->cur_index = (index_last + 1) % TX_DESCS;
- len = skb->len;
+ spin_unlock(&tx_lock);
+
+@@ -696,79 +752,41 @@ static int eth_xmit(struct sk_buff *skb,
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ config0 |= UDP_CHECKSUM | TCP_CHECKSUM;
+
+- if (!nr_frags) {
+- tx_desc = &(tx_ring)->desc[index];
+-
+- len = skb->len;
++ len0 = skb->len;
- phys = dma_map_single(NULL, skb->data, len,
- DMA_TO_DEVICE);
-+ phys = dma_map_single(NULL, skb->data, len, DMA_TO_DEVICE);
++ /* fragments */
++ for (i = 0; i < nr_frags; i++) {
++ struct skb_frag_struct *frag;
++ void *addr;
+
+- tx_desc->sdp = phys;
+- tx_desc->pmap = pmap;
+- tx_ring->phys_tab[index] = phys;
++ index = (index + 1) % TX_DESCS;
+
+- tx_ring->buff_tab[index] = skb;
+- config0 |= FIRST_SEGMENT | LAST_SEGMENT;
+- } else {
+- index = ((index + nr_frags) % TX_DESCS);
+- tx_desc = &(tx_ring)->desc[index];
++ frag = &skb_shinfo(skb)->frags[i];
++ addr = page_address(skb_frag_page(frag)) + frag->page_offset;
+
+- /* fragments */
+- for (i = nr_frags; i > 0; i--) {
+- u32 config;
+- void *addr;
+-
+- frag = &skb_shinfo(skb)->frags[i-1];
+- len = frag->size;
+-
+- addr = page_address(skb_frag_page(frag)) +
+- frag->page_offset;
+- phys = dma_map_single(NULL, addr, len, DMA_TO_DEVICE);
+-
+- tx_desc->sdp = phys;
+-
+- tx_desc->pmap = pmap;
+- tx_ring->phys_tab[index] = phys;
+-
+- config = config0 | len;
+- if (i == nr_frags) {
+- config |= LAST_SEGMENT;
+- tx_ring->buff_tab[index] = skb;
+- }
+- if (index == TX_DESCS - 1)
+- config |= END_OF_RING;
+- tx_desc->config0 = config;
+-
+- if (index == 0) {
+- index = TX_DESCS - 1;
+- tx_desc = &(tx_ring)->desc[index];
+- } else {
+- index--;
+- tx_desc--;
+- }
+- }
++ eth_set_desc(tx_ring, index, index_last, addr, frag->size,
++ config0, pmap);
++ }
+
+- /* header */
+- len = skb->len - skb->data_len;
++ if (nr_frags)
++ len0 = skb->len - skb->data_len;
+
+- phys = dma_map_single(NULL, skb->data, len, DMA_TO_DEVICE);
++ skb_walk_frags(skb, skb1) {
++ index = (index + 1) % TX_DESCS;
++ len0 -= skb1->len;
- tx_desc->sdp = phys;
- tx_desc->pmap = pmap;
-@@ -849,24 +880,24 @@ static int init_rings(struct sw *sw)
+- tx_desc->sdp = phys;
+- tx_desc->pmap = pmap;
+- tx_ring->phys_tab[index] = phys;
+- config0 |= FIRST_SEGMENT;
++ eth_set_desc(tx_ring, index, index_last, skb1->data, skb1->len,
++ config0, pmap);
+ }
+
+- if (index == TX_DESCS - 1)
+- config0 |= END_OF_RING;
+-
+- tx_desc->config0 = config0 | len;
++ tx_ring->buff_tab[index0] = skb;
++ eth_set_desc(tx_ring, index0, index_last, skb->data, len0,
++ config0 | FIRST_SEGMENT, pmap);
+
+ mb();
+
+ spin_lock(&tx_lock);
+- tx_ring->num_used += nr_frags + 1;
++ tx_ring->num_used += nr_desc + 1;
+ spin_unlock(&tx_lock);
+
+ dev->stats.tx_packets++;
+@@ -849,24 +867,24 @@ static int init_rings(struct sw *sw)
/* Setup RX buffers */
for (i = 0; i < RX_DESCS; i++) {
struct rx_desc *desc = &(rx_ring)->desc[i];
@@ -276,7 +431,7 @@
rx_ring->phys_tab[i] = desc->sdp;
desc->cown = 0;
}
-@@ -905,12 +936,13 @@ static void destroy_rings(struct sw *sw)
+@@ -905,12 +923,13 @@ static void destroy_rings(struct sw *sw)
struct _rx_ring *rx_ring = sw->rx_ring;
struct rx_desc *desc = &(rx_ring)->desc[i];
struct sk_buff *skb = sw->rx_ring->buff_tab[i];
@@ -296,7 +451,7 @@
}
dma_pool_free(rx_dma_pool, sw->rx_ring->desc, sw->rx_ring->phys_addr);
dma_pool_destroy(rx_dma_pool);
-@@ -1085,13 +1117,22 @@ static int eth_set_mac(struct net_device
+@@ -1085,13 +1104,22 @@ static int eth_set_mac(struct net_device
return 0;
}
@@ -320,7 +475,16 @@
.ndo_set_mac_address = eth_set_mac,
.ndo_validate_addr = eth_validate_addr,
};
-@@ -1124,6 +1165,10 @@ static int __devinit eth_init_one(struct
+@@ -1111,7 +1139,7 @@ static int __devinit eth_init_one(struct
+ if (!(napi_dev = alloc_etherdev(sizeof(struct sw))))
+ return -ENOMEM;
+ strcpy(napi_dev->name, "switch%d");
+- napi_dev->features = NETIF_F_IP_CSUM | NETIF_F_SG;
++ napi_dev->features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST;
+
+ SET_NETDEV_DEV(napi_dev, &pdev->dev);
+ sw = netdev_priv(napi_dev);
+@@ -1124,6 +1152,10 @@ static int __devinit eth_init_one(struct
goto err_free;
}
@@ -331,3 +495,12 @@
for (i = 0; i < 4; i++) {
temp = __raw_readl(&sw->regs->mac_cfg[i]);
temp |= (PORT_DISABLE);
+@@ -1185,7 +1217,7 @@ static int __devinit eth_init_one(struct
+ dev->netdev_ops = &cns3xxx_netdev_ops;
+ dev->ethtool_ops = &cns3xxx_ethtool_ops;
+ dev->tx_queue_len = 1000;
+- dev->features = NETIF_F_IP_CSUM | NETIF_F_SG;
++ dev->features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST;
+
+ switch_port_tab[port->id] = port;
+ memcpy(dev->dev_addr, &plat->hwaddr[i], ETH_ALEN);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 20:44:07 +0000