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netxen: fix lro buffer allocation

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Alloc 12k skbuffs so that firmware can aggregate more
packets into one buffer. This doesn't raise memory
consumption since 9k skbs use 16k slab cache anyway.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke 2009-09-03 13:10:53 +00:00 committed by David S. Miller
parent d4ab88194e
commit bc75e5bfad
2 changed files with 7 additions and 2 deletions
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1
drivers/net/netxen/netxen_nic.h
View File

@ -149,6 +149,7 @@
#define NX_P2_RX_JUMBO_BUF_MAX_LEN (NX_MAX_ETHERHDR + P2_MAX_MTU)
#define NX_P3_RX_JUMBO_BUF_MAX_LEN (NX_MAX_ETHERHDR + P3_MAX_MTU)
#define NX_CT_DEFAULT_RX_BUF_LEN 2048
#define NX_LRO_BUFFER_EXTRA 2048
#define NX_RX_LRO_BUFFER_LENGTH (8060)

8
drivers/net/netxen/netxen_nic_init.c
View File

@ -265,6 +265,10 @@ int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
else
rds_ring->dma_size =
NX_P2_RX_JUMBO_BUF_MAX_LEN;
if (adapter->capabilities & NX_CAP0_HW_LRO)
rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
rds_ring->skb_size =
rds_ring->dma_size + NET_IP_ALIGN;
break;
@ -1217,6 +1221,7 @@ netxen_process_rcv(struct netxen_adapter *adapter,
if (pkt_offset)
skb_pull(skb, pkt_offset);
skb->truesize = skb->len + sizeof(struct sk_buff);
skb->protocol = eth_type_trans(skb, netdev);
napi_gro_receive(&sds_ring->napi, skb);
@ -1278,8 +1283,7 @@ netxen_process_lro(struct netxen_adapter *adapter,
skb_put(skb, lro_length + data_offset);
skb->truesize = (skb->len + sizeof(struct sk_buff) +
((unsigned long)skb->data - (unsigned long)skb->head));
skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
skb_pull(skb, l2_hdr_offset);
skb->protocol = eth_type_trans(skb, netdev);