Merge branch 'lro'

drivers/net/s2io.h

@@ -78,6 +78,13 @@ static int debug_level = ERR_DBG;
 typedef struct {
 	unsigned long long single_ecc_errs;
 	unsigned long long double_ecc_errs;
+	/* LRO statistics */
+	unsigned long long clubbed_frms_cnt;
+	unsigned long long sending_both;
+	unsigned long long outof_sequence_pkts;
+	unsigned long long flush_max_pkts;
+	unsigned long long sum_avg_pkts_aggregated;
+	unsigned long long num_aggregations;
 } swStat_t;
 
 /* The statistics block of Xena */
@@ -680,6 +687,24 @@ struct msix_info_st {
 	u64 data;
 };
 
+/* Data structure to represent a LRO session */
+typedef struct lro {
+	struct sk_buff	*parent;
+	u8		*l2h;
+	struct iphdr	*iph;
+	struct tcphdr	*tcph;
+	u32		tcp_next_seq;
+	u32		tcp_ack;
+	int		total_len;
+	int		frags_len;
+	int		sg_num;
+	int		in_use;
+	u16		window;
+	u32		cur_tsval;
+	u32		cur_tsecr;
+	u8		saw_ts;
+}lro_t;
+
 /* Structure representing one instance of the NIC */
 struct s2io_nic {
 	int rxd_mode;
@@ -784,6 +809,13 @@ struct s2io_nic {
 #define XFRAME_II_DEVICE	2
 	u8 device_type;
 
+#define MAX_LRO_SESSIONS	32
+	lro_t lro0_n[MAX_LRO_SESSIONS];
+	unsigned long	clubbed_frms_cnt;
+	unsigned long	sending_both;
+	u8		lro;
+	u16		lro_max_aggr_per_sess;
+
 #define INTA	0
 #define MSI	1
 #define MSI_X	2
@@ -937,4 +969,10 @@ static void s2io_card_down(nic_t *nic);
 static int s2io_card_up(nic_t *nic);
 static int get_xena_rev_id(struct pci_dev *pdev);
 static void restore_xmsi_data(nic_t *nic);
+
+static int s2io_club_tcp_session(u8 *buffer, u8 **tcp, u32 *tcp_len, lro_t **lro, RxD_t *rxdp, nic_t *sp);
+static void clear_lro_session(lro_t *lro);
+static void queue_rx_frame(struct sk_buff *skb);
+static void update_L3L4_header(nic_t *sp, lro_t *lro);
+static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb, u32 tcp_len);
 #endif				/* _S2IO_H */