igb: add support for in kernel LRO

This patch adds support for the use of the inet_lro module to provide
software LRO support.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index f41b9996d2e..c25ca17d322 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -36,6 +36,12 @@
 
 struct igb_adapter;
 
+#ifdef CONFIG_IGB_LRO
+#include <linux/inet_lro.h>
+#define MAX_LRO_AGGR                      32
+#define MAX_LRO_DESCRIPTORS                8
+#endif
+
 /* Interrupt defines */
 #define IGB_MAX_TX_CLEAN 72
 
@@ -167,6 +173,10 @@ struct igb_ring {
                         int no_itr_adjust;
                         struct igb_queue_stats rx_stats;
                         struct napi_struct napi;
+#ifdef CONFIG_IGB_LRO
+                        struct net_lro_mgr lro_mgr;
+                        bool lro_used;
+#endif
                 };
         };
 
@@ -278,6 +288,12 @@ struct igb_adapter {
 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
         struct igb_ring *multi_tx_table[IGB_MAX_TX_QUEUES];
 #endif /* CONFIG_NETDEVICES_MULTIQUEUE */
+#ifdef CONFIG_IGB_LRO
+        unsigned int lro_max_aggr;
+        unsigned int lro_aggregated;
+        unsigned int lro_flushed;
+        unsigned int lro_no_desc;
+#endif
 };
 
 #define IGB_FLAG_HAS_MSI           (1 << 0)