From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dhananjay Phadke Subject: [PATCH NEXT 1/3] netxen: fix lro buffer allocation Date: Thu, 3 Sep 2009 16:10:53 -0700 Message-ID: <1252019455-30683-1-git-send-email-dhananjay@netxen.com> Cc: netdev@vger.kernel.org, Dhananjay Phadke To: davem@davemloft.com Return-path: Received: from nat-1.pathscale.com ([198.186.3.73]:12129 "HELO unm84.unmin.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with SMTP id S932466AbZICXKz (ORCPT ); Thu, 3 Sep 2009 19:10:55 -0400 Sender: netdev-owner@vger.kernel.org List-ID: From: Dhananjay Phadke 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 --- drivers/net/netxen/netxen_nic.h | 1 + drivers/net/netxen/netxen_nic_init.c | 8 ++++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h index 224a746..ede2fa7 100644 --- a/drivers/net/netxen/netxen_nic.h +++ b/drivers/net/netxen/netxen_nic.h @@ -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) diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c index 8d4aa6f..04e36f2 100644 --- a/drivers/net/netxen/netxen_nic_init.c +++ b/drivers/net/netxen/netxen_nic_init.c @@ -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); -- 1.6.0.2