[SCSI] qla4xxx: Add host statistics support

The statistics include MAC, TCP/IP & iSCSI statistics.

Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 1d86f5bbd1d0..295b8d401bc4 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -151,6 +151,7 @@ static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 				  int len);
+static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 
 /*
  * SCSI host template entry points
@@ -262,6 +263,7 @@ static struct iscsi_transport qla4xxx_iscsi_transport = {
 	.login_flashnode	= qla4xxx_sysfs_ddb_login,
 	.logout_flashnode	= qla4xxx_sysfs_ddb_logout,
 	.logout_flashnode_sid	= qla4xxx_sysfs_ddb_logout_sid,
+	.get_host_stats		= qla4xxx_get_host_stats,
 };
 
 static struct scsi_transport_template *qla4xxx_scsi_transport;
@@ -950,6 +952,209 @@ exit_set_chap:
 	return rc;
 }
 
+
+static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
+{
+	struct scsi_qla_host *ha = to_qla_host(shost);
+	struct iscsi_offload_host_stats *host_stats = NULL;
+	int host_stats_size;
+	int ret = 0;
+	int ddb_idx = 0;
+	struct ql_iscsi_stats *ql_iscsi_stats = NULL;
+	int stats_size;
+	dma_addr_t iscsi_stats_dma;
+
+	DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
+
+	host_stats_size = sizeof(struct iscsi_offload_host_stats);
+
+	if (host_stats_size != len) {
+		ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
+			   __func__, len, host_stats_size);
+		ret = -EINVAL;
+		goto exit_host_stats;
+	}
+	host_stats = (struct iscsi_offload_host_stats *)buf;
+
+	if (!buf) {
+		ret = -ENOMEM;
+		goto exit_host_stats;
+	}
+
+	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
+
+	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
+					    &iscsi_stats_dma, GFP_KERNEL);
+	if (!ql_iscsi_stats) {
+		ql4_printk(KERN_ERR, ha,
+			   "Unable to allocate memory for iscsi stats\n");
+		goto exit_host_stats;
+	}
+
+	ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
+				     iscsi_stats_dma);
+	if (ret != QLA_SUCCESS) {
+		ql4_printk(KERN_ERR, ha,
+			   "Unable to retrieve iscsi stats\n");
+		goto exit_host_stats;
+	}
+	host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
+	host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
+	host_stats->mactx_multicast_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
+	host_stats->mactx_broadcast_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
+	host_stats->mactx_pause_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
+	host_stats->mactx_control_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
+	host_stats->mactx_deferral =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
+	host_stats->mactx_excess_deferral =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
+	host_stats->mactx_late_collision =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
+	host_stats->mactx_abort	= le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
+	host_stats->mactx_single_collision =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
+	host_stats->mactx_multiple_collision =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
+	host_stats->mactx_collision =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
+	host_stats->mactx_frames_dropped =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
+	host_stats->mactx_jumbo_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
+	host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
+	host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
+	host_stats->macrx_unknown_control_frames =
+		le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
+	host_stats->macrx_pause_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
+	host_stats->macrx_control_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
+	host_stats->macrx_dribble =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
+	host_stats->macrx_frame_length_error =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
+	host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
+	host_stats->macrx_carrier_sense_error =
+		le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
+	host_stats->macrx_frame_discarded =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
+	host_stats->macrx_frames_dropped =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
+	host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
+	host_stats->mac_encoding_error =
+			le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
+	host_stats->macrx_length_error_large =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
+	host_stats->macrx_length_error_small =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
+	host_stats->macrx_multicast_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
+	host_stats->macrx_broadcast_frames =
+			le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
+	host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
+	host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
+	host_stats->iptx_fragments =
+			le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
+	host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
+	host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
+	host_stats->iprx_fragments =
+			le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
+	host_stats->ip_datagram_reassembly =
+			le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
+	host_stats->ip_invalid_address_error =
+			le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
+	host_stats->ip_error_packets =
+			le64_to_cpu(ql_iscsi_stats->ip_error_packets);
+	host_stats->ip_fragrx_overlap =
+			le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
+	host_stats->ip_fragrx_outoforder =
+			le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
+	host_stats->ip_datagram_reassembly_timeout =
+		le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
+	host_stats->ipv6tx_packets =
+			le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
+	host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
+	host_stats->ipv6tx_fragments =
+			le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
+	host_stats->ipv6rx_packets =
+			le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
+	host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
+	host_stats->ipv6rx_fragments =
+			le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
+	host_stats->ipv6_datagram_reassembly =
+			le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
+	host_stats->ipv6_invalid_address_error =
+		le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
+	host_stats->ipv6_error_packets =
+			le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
+	host_stats->ipv6_fragrx_overlap =
+			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
+	host_stats->ipv6_fragrx_outoforder =
+			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
+	host_stats->ipv6_datagram_reassembly_timeout =
+		le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
+	host_stats->tcptx_segments =
+			le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
+	host_stats->tcptx_bytes	= le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
+	host_stats->tcprx_segments =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
+	host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
+	host_stats->tcp_duplicate_ack_retx =
+			le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
+	host_stats->tcp_retx_timer_expired =
+			le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
+	host_stats->tcprx_duplicate_ack	=
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
+	host_stats->tcprx_pure_ackr =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
+	host_stats->tcptx_delayed_ack =
+			le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
+	host_stats->tcptx_pure_ack =
+			le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
+	host_stats->tcprx_segment_error =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
+	host_stats->tcprx_segment_outoforder =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
+	host_stats->tcprx_window_probe =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
+	host_stats->tcprx_window_update =
+			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
+	host_stats->tcptx_window_probe_persist =
+		le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
+	host_stats->ecc_error_correction =
+			le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
+	host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
+	host_stats->iscsi_data_bytes_tx =
+			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
+	host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
+	host_stats->iscsi_data_bytes_rx	=
+			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
+	host_stats->iscsi_io_completed =
+			le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
+	host_stats->iscsi_unexpected_io_rx =
+			le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
+	host_stats->iscsi_format_error =
+			le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
+	host_stats->iscsi_hdr_digest_error =
+			le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
+	host_stats->iscsi_data_digest_error =
+			le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
+	host_stats->iscsi_sequence_error =
+			le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
+exit_host_stats:
+	if (ql_iscsi_stats)
+		dma_free_coherent(&ha->pdev->dev, host_stats_size,
+				  ql_iscsi_stats, iscsi_stats_dma);
+
+	ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
+		   __func__);
+	return ret;
+}
+
 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 				   enum iscsi_param_type param_type,
 				   int param, char *buf)