Patchwork [net-next,1/5] be2net: add rxhash support

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Submitter Ajit Khaparde
Date April 7, 2011, 4:07 a.m.
Message ID <20110407040743.GA4183@akhaparde-VBox>
Download mbox | patch
Permalink /patch/90123/
State Accepted
Delegated to: David Miller
Headers show

Comments

Ajit Khaparde - April 7, 2011, 4:07 a.m.
Add rxhash support,
Based on initial work by Eric Dumazet.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
---
 drivers/net/benet/be.h         |    5 +++++
 drivers/net/benet/be_ethtool.c |   13 +++++++++++++
 drivers/net/benet/be_main.c    |   17 ++++++++++++-----
 3 files changed, 30 insertions(+), 5 deletions(-)
Eric Dumazet - April 7, 2011, 5:05 a.m.
Le mercredi 06 avril 2011 à 23:07 -0500, Ajit Khaparde a écrit :
> Add rxhash support,
> Based on initial work by Eric Dumazet.
> 
> Cc: Eric Dumazet <eric.dumazet@gmail.com>
> Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
> ---
>  drivers/net/benet/be.h         |    5 +++++
>  drivers/net/benet/be_ethtool.c |   13 +++++++++++++
>  drivers/net/benet/be_main.c    |   17 ++++++++++++-----
>  3 files changed, 30 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
> index 0899d91..8941b98 100644
> --- a/drivers/net/benet/be.h
> +++ b/drivers/net/benet/be.h
> @@ -485,6 +485,11 @@ static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
>  	memcpy(mac, adapter->netdev->dev_addr, 3);
>  }
>  
> +static inline bool be_multi_rxq(struct be_adapter *adapter)

static inline bool be_multi_rxq(const struct be_adapter *adapter)


> +{
> +	return (adapter->num_rx_qs > 1);

	return adapter->num_rx_qs > 1;

> +}
> +

Other parts seems fine, thanks !


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Ajit Khaparde - April 7, 2011, 7:57 p.m.

David Miller - April 7, 2011, 8:11 p.m.
From: <Ajit.Khaparde@Emulex.Com>
Date: Thu, 7 Apr 2011 12:57:27 -0700

> Dave, do you want me to respin patch or you can accomodate Eric's suggestion?

It's simple enough, I'll take care of it.
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Patch

diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
index 0899d91..8941b98 100644
--- a/drivers/net/benet/be.h
+++ b/drivers/net/benet/be.h
@@ -485,6 +485,11 @@  static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
 	memcpy(mac, adapter->netdev->dev_addr, 3);
 }
 
+static inline bool be_multi_rxq(struct be_adapter *adapter)
+{
+	return (adapter->num_rx_qs > 1);
+}
+
 extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
 		u16 num_popped);
 extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index a665697..1565c81 100644
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -735,6 +735,18 @@  be_read_eeprom(struct net_device *netdev, struct ethtool_eeprom *eeprom,
 	return status;
 }
 
+static int be_set_flags(struct net_device *netdev, u32 data)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	int rc = -1;
+
+	if (be_multi_rxq(adapter))
+		rc = ethtool_op_set_flags(netdev, data, ETH_FLAG_RXHASH |
+				ETH_FLAG_TXVLAN | ETH_FLAG_RXVLAN);
+
+	return rc;
+}
+
 const struct ethtool_ops be_ethtool_ops = {
 	.get_settings = be_get_settings,
 	.get_drvinfo = be_get_drvinfo,
@@ -764,4 +776,5 @@  const struct ethtool_ops be_ethtool_ops = {
 	.get_regs = be_get_regs,
 	.flash_device = be_do_flash,
 	.self_test = be_self_test,
+	.set_flags = be_set_flags,
 };
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index a24fb45..4910055 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -116,11 +116,6 @@  static char *ue_status_hi_desc[] = {
 	"Unknown"
 };
 
-static inline bool be_multi_rxq(struct be_adapter *adapter)
-{
-	return (adapter->num_rx_qs > 1);
-}
-
 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
 {
 	struct be_dma_mem *mem = &q->dma_mem;
@@ -1012,6 +1007,9 @@  static void be_rx_compl_process(struct be_adapter *adapter,
 
 	skb->truesize = skb->len + sizeof(struct sk_buff);
 	skb->protocol = eth_type_trans(skb, adapter->netdev);
+	if (adapter->netdev->features & NETIF_F_RXHASH)
+		skb->rxhash = rxcp->rss_hash;
+
 
 	if (unlikely(rxcp->vlanf)) {
 		if (!adapter->vlan_grp || adapter->vlans_added == 0) {
@@ -1072,6 +1070,8 @@  static void be_rx_compl_process_gro(struct be_adapter *adapter,
 	skb->data_len = rxcp->pkt_size;
 	skb->truesize += rxcp->pkt_size;
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	if (adapter->netdev->features & NETIF_F_RXHASH)
+		skb->rxhash = rxcp->rss_hash;
 
 	if (likely(!rxcp->vlanf))
 		napi_gro_frags(&eq_obj->napi);
@@ -1101,6 +1101,8 @@  static void be_parse_rx_compl_v1(struct be_adapter *adapter,
 		AMAP_GET_BITS(struct amap_eth_rx_compl_v1, numfrags, compl);
 	rxcp->pkt_type =
 		AMAP_GET_BITS(struct amap_eth_rx_compl_v1, cast_enc, compl);
+	rxcp->rss_hash =
+		AMAP_GET_BITS(struct amap_eth_rx_compl_v1, rsshash, rxcp);
 	if (rxcp->vlanf) {
 		rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, vtm,
 				compl);
@@ -1131,6 +1133,8 @@  static void be_parse_rx_compl_v0(struct be_adapter *adapter,
 		AMAP_GET_BITS(struct amap_eth_rx_compl_v0, numfrags, compl);
 	rxcp->pkt_type =
 		AMAP_GET_BITS(struct amap_eth_rx_compl_v0, cast_enc, compl);
+	rxcp->rss_hash =
+		AMAP_GET_BITS(struct amap_eth_rx_compl_v0, rsshash, rxcp);
 	if (rxcp->vlanf) {
 		rxcp->vtm = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, vtm,
 				compl);
@@ -2614,6 +2618,9 @@  static void be_netdev_init(struct net_device *netdev)
 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 		NETIF_F_GRO | NETIF_F_TSO6;
 
+	if (be_multi_rxq(adapter))
+		netdev->features |= NETIF_F_RXHASH;
+
 	netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO |
 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;