[PATCH 1/2] ixgbe: fix typo

[PATCH 1/2] ixgbe: fix typo

[Jeff Kirsher]

Define names were accidently transposed.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

 drivers/net/ixgbe/ixgbe_82598.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index 6321b05..2f38e84 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -58,8 +58,8 @@ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw);
 
 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
 {
-	hw->mac.num_rx_queues = IXGBE_82598_MAX_TX_QUEUES;
-	hw->mac.num_tx_queues = IXGBE_82598_MAX_RX_QUEUES;
+	hw->mac.num_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
+	hw->mac.num_tx_queues = IXGBE_82598_MAX_TX_QUEUES;
 	hw->mac.num_rx_addrs = IXGBE_82598_RAR_ENTRIES;
 
 	/* PHY ops are filled in by default properly for Fiber only */

[PATCH 2/2] ixgbe: add LRO support

[Jeff Kirsher]

Support for in-kernel LRO

Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

 drivers/net/ixgbe/ixgbe.h         |    9 +++
 drivers/net/ixgbe/ixgbe_ethtool.c |    9 +++
 drivers/net/ixgbe/ixgbe_main.c    |  111 ++++++++++++++++++++++++++++++-------
 3 files changed, 108 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index d981134..956914a 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -32,6 +32,7 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/netdevice.h>
+#include <linux/inet_lro.h>
 
 #include "ixgbe_type.h"
 #include "ixgbe_common.h"
@@ -100,6 +101,9 @@
 #define IXGBE_TX_FLAGS_VLAN_MASK	0xffff0000
 #define IXGBE_TX_FLAGS_VLAN_SHIFT	16
 
+#define IXGBE_MAX_LRO_DESCRIPTORS       8
+#define IXGBE_MAX_LRO_AGGREGATE         32
+
 /* wrapper around a pointer to a socket buffer,
  * so a DMA handle can be stored along with the buffer */
 struct ixgbe_tx_buffer {
@@ -150,6 +154,8 @@ struct ixgbe_ring {
 	/* cpu for tx queue */
 	int cpu;
 #endif
+	struct net_lro_mgr lro_mgr;
+	bool lro_used;
 	struct ixgbe_queue_stats stats;
 	u8 v_idx; /* maps directly to the index for this ring in the hardware
 		   * vector array, can also be used for finding the bit in EICR
@@ -287,6 +293,9 @@ struct ixgbe_adapter {
 
 	unsigned long state;
 	u64 tx_busy;
+	u64 lro_aggregated;
+	u64 lro_flushed;
+	u64 lro_no_desc;
 };
 
 enum ixbge_state_t {
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 4e46377..90013c6 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -90,6 +90,8 @@ static struct ixgbe_stats ixgbe_gstrings_stats[] = {
 	{"rx_header_split", IXGBE_STAT(rx_hdr_split)},
 	{"alloc_rx_page_failed", IXGBE_STAT(alloc_rx_page_failed)},
 	{"alloc_rx_buff_failed", IXGBE_STAT(alloc_rx_buff_failed)},
+	{"lro_aggregated", IXGBE_STAT(lro_aggregated)},
+	{"lro_flushed", IXGBE_STAT(lro_flushed)},
 };
 
 #define IXGBE_QUEUE_STATS_LEN \
@@ -787,6 +789,7 @@ static void ixgbe_get_ethtool_stats(struct net_device *netdev,
 	int stat_count = sizeof(struct ixgbe_queue_stats) / sizeof(u64);
 	int j, k;
 	int i;
+	u64 aggregated = 0, flushed = 0, no_desc = 0;
 
 	ixgbe_update_stats(adapter);
 	for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
@@ -801,11 +804,17 @@ static void ixgbe_get_ethtool_stats(struct net_device *netdev,
 		i += k;
 	}
 	for (j = 0; j < adapter->num_rx_queues; j++) {
+		aggregated += adapter->rx_ring[j].lro_mgr.stats.aggregated;
+		flushed += adapter->rx_ring[j].lro_mgr.stats.flushed;
+		no_desc += adapter->rx_ring[j].lro_mgr.stats.no_desc;
 		queue_stat = (u64 *)&adapter->rx_ring[j].stats;
 		for (k = 0; k < stat_count; k++)
 			data[i + k] = queue_stat[k];
 		i += k;
 	}
+	adapter->lro_aggregated = aggregated;
+	adapter->lro_flushed = flushed;
+	adapter->lro_no_desc = no_desc;
 }
 
 static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 7b85922..04c6482 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -389,24 +389,39 @@ static int __ixgbe_notify_dca(struct device *dev, void *data)
  * ixgbe_receive_skb - Send a completed packet up the stack
  * @adapter: board private structure
  * @skb: packet to send up
- * @is_vlan: packet has a VLAN tag
- * @tag: VLAN tag from descriptor
+ * @status: hardware indication of status of receive
+ * @rx_ring: rx descriptor ring (for a specific queue) to setup
+ * @rx_desc: rx descriptor
  **/
 static void ixgbe_receive_skb(struct ixgbe_adapter *adapter,
-			      struct sk_buff *skb, bool is_vlan,
-			      u16 tag)
+			      struct sk_buff *skb, u8 status,
+			      struct ixgbe_ring *ring,
+                              union ixgbe_adv_rx_desc *rx_desc)
 {
-	if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
-		if (adapter->vlgrp && is_vlan)
-			vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag);
-		else
-			netif_receive_skb(skb);
-	} else {
+	bool is_vlan = (status & IXGBE_RXD_STAT_VP);
+	u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
 
+	if (adapter->netdev->features & NETIF_F_LRO &&
+	    skb->ip_summed == CHECKSUM_UNNECESSARY) {
 		if (adapter->vlgrp && is_vlan)
-			vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
+			lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb,
+			                             adapter->vlgrp, tag,
+			                             rx_desc);
 		else
-			netif_rx(skb);
+			lro_receive_skb(&ring->lro_mgr, skb, rx_desc);
+		ring->lro_used = true;
+	} else {
+		if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
+			if (adapter->vlgrp && is_vlan)
+				vlan_nw_accel_receive_skb(skb, adapter->vlgrp, tag);
+			else
+				netif_receive_skb(skb);
+		} else {
+			if (adapter->vlgrp && is_vlan)
+				vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
+			else
+				netif_rx(skb);
+		}
 	}
 }
 
@@ -546,8 +561,8 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter,
 	struct sk_buff *skb;
 	unsigned int i;
 	u32 upper_len, len, staterr;
-	u16 hdr_info, vlan_tag;
-	bool is_vlan, cleaned = false;
+	u16 hdr_info;
+	bool cleaned = false;
 	int cleaned_count = 0;
 	unsigned int total_rx_bytes = 0, total_rx_packets = 0;
 
@@ -556,8 +571,6 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter,
 	rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
 	staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
 	rx_buffer_info = &rx_ring->rx_buffer_info[i];
-	is_vlan = (staterr & IXGBE_RXD_STAT_VP);
-	vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan);
 
 	while (staterr & IXGBE_RXD_STAT_DD) {
 		if (*work_done >= work_to_do)
@@ -635,7 +648,7 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter,
 		total_rx_packets++;
 
 		skb->protocol = eth_type_trans(skb, netdev);
-		ixgbe_receive_skb(adapter, skb, is_vlan, vlan_tag);
+		ixgbe_receive_skb(adapter, skb, staterr, rx_ring, rx_desc);
 		netdev->last_rx = jiffies;
 
 next_desc:
@@ -652,8 +665,11 @@ next_desc:
 		rx_buffer_info = next_buffer;
 
 		staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
-		is_vlan = (staterr & IXGBE_RXD_STAT_VP);
-		vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan);
+	}
+
+	if (rx_ring->lro_used) {
+		lro_flush_all(&rx_ring->lro_mgr);
+		rx_ring->lro_used = false;
 	}
 
 	rx_ring->next_to_clean = i;
@@ -1382,6 +1398,33 @@ static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
 
 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT			2
 /**
+ * ixgbe_get_skb_hdr - helper function for LRO header processing
+ * @skb: pointer to sk_buff to be added to LRO packet
+ * @iphdr: pointer to tcp header structure
+ * @tcph: pointer to tcp header structure
+ * @hdr_flags: pointer to header flags
+ * @priv: private data
+ **/
+static int ixgbe_get_skb_hdr(struct sk_buff *skb, void **iphdr, void **tcph,
+                             u64 *hdr_flags, void *priv)
+{
+	union ixgbe_adv_rx_desc *rx_desc = priv;
+
+	/* Verify that this is a valid IPv4 TCP packet */
+	if (!(rx_desc->wb.lower.lo_dword.pkt_info &
+	    (IXGBE_RXDADV_PKTTYPE_IPV4 | IXGBE_RXDADV_PKTTYPE_TCP)))
+		return -1;
+
+	/* Set network headers */
+	skb_reset_network_header(skb);
+	skb_set_transport_header(skb, ip_hdrlen(skb));
+	*iphdr = ip_hdr(skb);
+	*tcph = tcp_hdr(skb);
+	*hdr_flags = LRO_IPV4 | LRO_TCP;
+	return 0;
+}
+
+/**
  * ixgbe_configure_rx - Configure 8254x Receive Unit after Reset
  * @adapter: board private structure
  *
@@ -1470,6 +1513,17 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
 		adapter->rx_ring[i].tail = IXGBE_RDT(i);
 	}
 
+	/* Intitial LRO Settings */
+	adapter->rx_ring[i].lro_mgr.max_aggr = IXGBE_MAX_LRO_AGGREGATE;
+	adapter->rx_ring[i].lro_mgr.max_desc = IXGBE_MAX_LRO_DESCRIPTORS;
+	adapter->rx_ring[i].lro_mgr.get_skb_header = ixgbe_get_skb_hdr;
+	adapter->rx_ring[i].lro_mgr.features = LRO_F_EXTRACT_VLAN_ID;
+	if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
+		adapter->rx_ring[i].lro_mgr.features |= LRO_F_NAPI;
+	adapter->rx_ring[i].lro_mgr.dev = adapter->netdev;
+	adapter->rx_ring[i].lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
+	adapter->rx_ring[i].lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+
 	if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
 		/* Fill out redirection table */
 		for (i = 0, j = 0; i < 128; i++, j++) {
@@ -2489,12 +2543,18 @@ int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
 	struct pci_dev *pdev = adapter->pdev;
 	int size;
 
+	size = sizeof(struct net_lro_desc) * IXGBE_MAX_LRO_DESCRIPTORS;
+	rxdr->lro_mgr.lro_arr = vmalloc(size);
+	if (!rxdr->lro_mgr.lro_arr)
+		return -ENOMEM;
+	memset(rxdr->lro_mgr.lro_arr, 0, size);
+
 	size = sizeof(struct ixgbe_rx_buffer) * rxdr->count;
 	rxdr->rx_buffer_info = vmalloc(size);
 	if (!rxdr->rx_buffer_info) {
 		DPRINTK(PROBE, ERR,
 			"vmalloc allocation failed for the rx desc ring\n");
-		return -ENOMEM;
+		goto alloc_failed;
 	}
 	memset(rxdr->rx_buffer_info, 0, size);
 
@@ -2508,13 +2568,18 @@ int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
 		DPRINTK(PROBE, ERR,
 			"Memory allocation failed for the rx desc ring\n");
 		vfree(rxdr->rx_buffer_info);
-		return -ENOMEM;
+		goto alloc_failed;
 	}
 
 	rxdr->next_to_clean = 0;
 	rxdr->next_to_use = 0;
 
 	return 0;
+
+alloc_failed:
+	vfree(rxdr->lro_mgr.lro_arr);
+	rxdr->lro_mgr.lro_arr = NULL;
+	return -ENOMEM;
 }
 
 /**
@@ -2565,6 +2630,9 @@ static void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
 {
 	struct pci_dev *pdev = adapter->pdev;
 
+	vfree(rx_ring->lro_mgr.lro_arr);
+	rx_ring->lro_mgr.lro_arr = NULL;
+
 	ixgbe_clean_rx_ring(adapter, rx_ring);
 
 	vfree(rx_ring->rx_buffer_info);
@@ -3517,6 +3585,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 			   NETIF_F_HW_VLAN_RX |
 			   NETIF_F_HW_VLAN_FILTER;
 
+	netdev->features |= NETIF_F_LRO;
 	netdev->features |= NETIF_F_TSO;
 
 	netdev->features |= NETIF_F_TSO6;

Re: [PATCH 2/2] ixgbe: add LRO support

[Ben Hutchings]

Jeff Kirsher wrote:
> Support for in-kernel LRO
> 
> Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> ---
> 
>  drivers/net/ixgbe/ixgbe.h         |    9 +++
>  drivers/net/ixgbe/ixgbe_ethtool.c |    9 +++
>  drivers/net/ixgbe/ixgbe_main.c    |  111 ++++++++++++++++++++++++++++++-------
>  3 files changed, 108 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
> index d981134..956914a 100644
> --- a/drivers/net/ixgbe/ixgbe.h
> +++ b/drivers/net/ixgbe/ixgbe.h
> @@ -32,6 +32,7 @@
>  #include <linux/types.h>
>  #include <linux/pci.h>
>  #include <linux/netdevice.h>
> +#include <linux/inet_lro.h>
>  
>  #include "ixgbe_type.h"
>  #include "ixgbe_common.h"
> @@ -100,6 +101,9 @@
>  #define IXGBE_TX_FLAGS_VLAN_MASK	0xffff0000
>  #define IXGBE_TX_FLAGS_VLAN_SHIFT	16
>  
> +#define IXGBE_MAX_LRO_DESCRIPTORS       8
> +#define IXGBE_MAX_LRO_AGGREGATE         32

I think this is supposed to be <= MAX_SKB_FRAGS, though that's only
critical if you aggregating pages.

[...]
> @@ -3517,6 +3585,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
>  			   NETIF_F_HW_VLAN_RX |
>  			   NETIF_F_HW_VLAN_FILTER;
>  
> +	netdev->features |= NETIF_F_LRO;

There needs to be a way of turning LRO off.  It should be sufficient
to add:

	.get_flags =	ethtool_op_get_flags,
	.set_flags =	ethtool_op_set_flags,

to your ethtool_ops.  A module parameter to set the default might be
worthwhile too.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.

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Re: [PATCH 2/2] ixgbe: add LRO support

[Malli]

[-- Attachment #1.1: Type: text/plain, Size: 2536 bytes --]

Thanks for your feedback Ben. I'll update the patch with ethtool get and set
flags. But in packet split mode we still wouldn't want to limit this with
MAX_SKB_FRAGS because we don't actually add the frags to the previous
packet.  They just chain them together using the frag_list and next pointers
in the skb. Let me know if it still doesn't address your concern in max
aggregation.
Thanks & Regards
-Malli

On Mon, Jun 9, 2008 at 4:26 PM, Ben Hutchings <bhutchings@solarflare.com>
wrote:

> Jeff Kirsher wrote:
> > Support for in-kernel LRO
> >
> > Signed-off-by: Mallikarjuna R Chilakala <
> mallikarjuna.chilakala@intel.com>
> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> > ---
> >
> >  drivers/net/ixgbe/ixgbe.h         |    9 +++
> >  drivers/net/ixgbe/ixgbe_ethtool.c |    9 +++
> >  drivers/net/ixgbe/ixgbe_main.c    |  111
> ++++++++++++++++++++++++++++++-------
> >  3 files changed, 108 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
> > index d981134..956914a 100644
> > --- a/drivers/net/ixgbe/ixgbe.h
> > +++ b/drivers/net/ixgbe/ixgbe.h
> > @@ -32,6 +32,7 @@
> >  #include <linux/types.h>
> >  #include <linux/pci.h>
> >  #include <linux/netdevice.h>
> > +#include <linux/inet_lro.h>
> >
> >  #include "ixgbe_type.h"
> >  #include "ixgbe_common.h"
> > @@ -100,6 +101,9 @@
> >  #define IXGBE_TX_FLAGS_VLAN_MASK     0xffff0000
> >  #define IXGBE_TX_FLAGS_VLAN_SHIFT    16
> >
> > +#define IXGBE_MAX_LRO_DESCRIPTORS       8
> > +#define IXGBE_MAX_LRO_AGGREGATE         32
>
> I think this is supposed to be <= MAX_SKB_FRAGS, though that's only
> critical if you aggregating pages.
>
> [...]
> > @@ -3517,6 +3585,7 @@ static int __devinit ixgbe_probe(struct pci_dev
> *pdev,
> >                          NETIF_F_HW_VLAN_RX |
> >                          NETIF_F_HW_VLAN_FILTER;
> >
> > +     netdev->features |= NETIF_F_LRO;
>
> There needs to be a way of turning LRO off.  It should be sufficient
> to add:
>
>        .get_flags =    ethtool_op_get_flags,
>        .set_flags =    ethtool_op_set_flags,
>
> to your ethtool_ops.  A module parameter to set the default might be
> worthwhile too.
>
> Ben.
>
> --
> Ben Hutchings, Senior Software Engineer, Solarflare Communications
> Not speaking for my employer; that's the marketing department's job.
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

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Re: [PATCH 2/2] ixgbe: add LRO support

[Malli]

Forwarding my reply. It got rejected from netdev list, as it was sent in HTML

Thanks for your feedback Ben. I'll update the patch with ethtool get
and set flags. But in packet split mode we still wouldn't want to
limit this with MAX_SKB_FRAGS because we don't actually add the frags
to the previous packet.  They just chain them together using the
frag_list and next pointers in the skb. Let me know if it still
doesn't address your concern in max aggregation.
Thanks & Regards
-Malli

> On Mon, Jun 9, 2008 at 4:26 PM, Ben Hutchings <bhutchings@solarflare.com> wrote:
>>
>> Jeff Kirsher wrote:
>> > Support for in-kernel LRO
>> >
>> > Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
>> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
>> > ---
>> >
>> >  drivers/net/ixgbe/ixgbe.h         |    9 +++
>> >  drivers/net/ixgbe/ixgbe_ethtool.c |    9 +++
>> >  drivers/net/ixgbe/ixgbe_main.c    |  111 ++++++++++++++++++++++++++++++-------
>> >  3 files changed, 108 insertions(+), 21 deletions(-)
>> >
>> > diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
>> > index d981134..956914a 100644
>> > --- a/drivers/net/ixgbe/ixgbe.h
>> > +++ b/drivers/net/ixgbe/ixgbe.h
>> > @@ -32,6 +32,7 @@
>> >  #include <linux/types.h>
>> >  #include <linux/pci.h>
>> >  #include <linux/netdevice.h>
>> > +#include <linux/inet_lro.h>
>> >
>> >  #include "ixgbe_type.h"
>> >  #include "ixgbe_common.h"
>> > @@ -100,6 +101,9 @@
>> >  #define IXGBE_TX_FLAGS_VLAN_MASK     0xffff0000
>> >  #define IXGBE_TX_FLAGS_VLAN_SHIFT    16
>> >
>> > +#define IXGBE_MAX_LRO_DESCRIPTORS       8
>> > +#define IXGBE_MAX_LRO_AGGREGATE         32
>>
>> I think this is supposed to be <= MAX_SKB_FRAGS, though that's only
>> critical if you aggregating pages.
>>
>> [...]
>> > @@ -3517,6 +3585,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
>> >                          NETIF_F_HW_VLAN_RX |
>> >                          NETIF_F_HW_VLAN_FILTER;
>> >
>> > +     netdev->features |= NETIF_F_LRO;
>>
>> There needs to be a way of turning LRO off.  It should be sufficient
>> to add:
>>
>>        .get_flags =    ethtool_op_get_flags,
>>        .set_flags =    ethtool_op_set_flags,
>>
>> to your ethtool_ops.  A module parameter to set the default might be
>> worthwhile too.
>>
>> Ben.
>>
>> --
>> Ben Hutchings, Senior Software Engineer, Solarflare Communications
>> Not speaking for my employer; that's the marketing department's job.
>> --
>> To unsubscribe from this list: send the line "unsubscribe netdev" in
>> the body of a message to majordomo@vger.kernel.org
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Re: [PATCH 2/2] ixgbe: add LRO support

[Ben Hutchings]

Malli wrote:
> Forwarding my reply. It got rejected from netdev list, as it was sent in HTML
> 
> Thanks for your feedback Ben. I'll update the patch with ethtool get
> and set flags. But in packet split mode we still wouldn't want to
> limit this with MAX_SKB_FRAGS because we don't actually add the frags
> to the previous packet.  They just chain them together using the
> frag_list and next pointers in the skb. Let me know if it still
> doesn't address your concern in max aggregation.

Yes, I understood that.  I wasn't sure whether MAX_SKB_FRAGS was also meant
to be a limit on the frag_list.  The comment above its definition implies
quite strongly that it isn't, so there's no problem.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.

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Re: [PATCH 1/2] ixgbe: fix typo

[Jeff Garzik]

Jeff Kirsher wrote:
> Define names were accidently transposed.
> 
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> ---
> 
>  drivers/net/ixgbe/ixgbe_82598.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
> index 6321b05..2f38e84 100644
> --- a/drivers/net/ixgbe/ixgbe_82598.c
> +++ b/drivers/net/ixgbe/ixgbe_82598.c
> @@ -58,8 +58,8 @@ static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw);
>  
>  static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
>  {
> -	hw->mac.num_rx_queues = IXGBE_82598_MAX_TX_QUEUES;
> -	hw->mac.num_tx_queues = IXGBE_82598_MAX_RX_QUEUES;
> +	hw->mac.num_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
> +	hw->mac.num_tx_queues = IXGBE_82598_MAX_TX_QUEUES;
>  	hw->mac.num_rx_addrs = IXGBE_82598_RAR_ENTRIES;
>  
>  	/* PHY ops are filled in by default properly for Fiber only */
> 

applied for 2.6.26



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