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cns3xxx: fix ethernet port lookup for multi-descriptor jumbo frames 

SVN-Revision: 33499
lede-17.01
Felix Fietkau 2012-09-21 00:13:08 +00:00
parent 029aaf4514
commit a1c016fe16
1 changed files with 26 additions and 14 deletions
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40
target/linux/cns3xxx/patches-3.3/410-ethernet_fix_jumbo_frame.patch
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@ -99,7 +99,15 @@
i++;
desc++;
}
@@ -588,49 +594,79 @@ static int eth_poll(struct napi_struct *
@@ -579,7 +585,6 @@ static void clear_tx_desc(struct sw *sw)
static int eth_poll(struct napi_struct *napi, int budget)
{
struct sw *sw = container_of(napi, struct sw, napi);
- struct net_device *dev;
struct _rx_ring *rx_ring = sw->rx_ring;
int received = 0;
unsigned int length;
@@ -588,49 +593,82 @@ static int eth_poll(struct napi_struct *
while (desc->cown) {
struct sk_buff *skb;
@ -110,14 +118,15 @@
- skb = rx_ring->buff_tab[i];
+ /* process received frame */
+ dma_unmap_single(&dev->dev, rx_ring->phys_tab[i],
+ 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;
- /* process received frame */
@ -125,13 +134,13 @@
- length, DMA_FROM_DEVICE);
+ if (desc->fsd && !desc->lsd)
+ length = RX_SEGMENT_MRU;
+
+ if (!desc->fsd) {
+ reserve -= NET_IP_ALIGN;
+ if (!desc->lsd)
+ length += NET_IP_ALIGN;
+ }
+
+ skb_reserve(skb, reserve);
skb_put(skb, length);
@ -149,11 +158,14 @@
+ 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) {
+ skb = sw->frag_first;
+ dev = skb->dev;
+ skb->protocol = eth_type_trans(skb, dev);
+
+ dev->stats.rx_packets++;
@ -205,7 +217,7 @@
if (++i == RX_DESCS) {
i = 0;
desc = &(rx_ring)->desc[i];
@@ -671,12 +707,6 @@ static int eth_xmit(struct sk_buff *skb,
@@ -671,12 +709,6 @@ static int eth_xmit(struct sk_buff *skb,
if (pmap == 8)
pmap = (1 << 4);
@ -218,7 +230,7 @@
spin_lock(&tx_lock);
if ((tx_ring->num_used + nr_frags) >= TX_DESCS) {
@@ -701,8 +731,7 @@ static int eth_xmit(struct sk_buff *skb,
@@ -701,8 +733,7 @@ static int eth_xmit(struct sk_buff *skb,
len = skb->len;
@ -228,7 +240,7 @@
tx_desc->sdp = phys;
tx_desc->pmap = pmap;
@@ -849,24 +878,24 @@ static int init_rings(struct sw *sw)
@@ -849,24 +880,24 @@ 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];
@ -264,7 +276,7 @@
rx_ring->phys_tab[i] = desc->sdp;
desc->cown = 0;
}
@@ -905,12 +934,13 @@ static void destroy_rings(struct sw *sw)
@@ -905,12 +936,13 @@ 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];
@ -284,7 +296,7 @@
}
dma_pool_free(rx_dma_pool, sw->rx_ring->desc, sw->rx_ring->phys_addr);
dma_pool_destroy(rx_dma_pool);
@@ -1085,13 +1115,22 @@ static int eth_set_mac(struct net_device
@@ -1085,13 +1117,22 @@ static int eth_set_mac(struct net_device
return 0;
}
@ -308,7 +320,7 @@
.ndo_set_mac_address = eth_set_mac,
.ndo_validate_addr = eth_validate_addr,
};
@@ -1124,6 +1163,10 @@ static int __devinit eth_init_one(struct
@@ -1124,6 +1165,10 @@ static int __devinit eth_init_one(struct
goto err_free;
}