forked from luck/tmp_suning_uos_patched
[SCSI] bnx2fc: Tx/Rx byte counts reset to 0 when exceeding 32 bit values
Since the FW counters are 32-bit, accumulate the stats in the driver. [jejb: fix checkpatch warning] Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -156,6 +156,18 @@
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#define BNX2FC_RELOGIN_WAIT_TIME 200
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#define BNX2FC_RELOGIN_WAIT_CNT 10
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#define BNX2FC_STATS(hba, stat, cnt) \
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do { \
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u32 val; \
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\
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val = fw_stats->stat.cnt; \
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if (hba->prev_stats.stat.cnt <= val) \
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val -= hba->prev_stats.stat.cnt; \
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else \
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val += (0xfffffff - hba->prev_stats.stat.cnt); \
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hba->bfw_stats.cnt += val; \
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} while (0)
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/* bnx2fc driver uses only one instance of fcoe_percpu_s */
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extern struct fcoe_percpu_s bnx2fc_global;
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@ -167,6 +179,14 @@ struct bnx2fc_percpu_s {
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spinlock_t fp_work_lock;
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};
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struct bnx2fc_fw_stats {
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u64 fc_crc_cnt;
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u64 fcoe_tx_pkt_cnt;
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u64 fcoe_rx_pkt_cnt;
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u64 fcoe_tx_byte_cnt;
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u64 fcoe_rx_byte_cnt;
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};
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struct bnx2fc_hba {
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struct list_head list;
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struct cnic_dev *cnic;
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@ -207,6 +227,8 @@ struct bnx2fc_hba {
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struct bnx2fc_rport **tgt_ofld_list;
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/* statistics */
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struct bnx2fc_fw_stats bfw_stats;
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struct fcoe_statistics_params prev_stats;
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struct fcoe_statistics_params *stats_buffer;
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dma_addr_t stats_buf_dma;
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struct completion stat_req_done;
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@ -687,11 +687,16 @@ static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
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BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
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return bnx2fc_stats;
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}
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bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat2.fc_crc_cnt;
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bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
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bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
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bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
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bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
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BNX2FC_STATS(hba, rx_stat2, fc_crc_cnt);
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bnx2fc_stats->invalid_crc_count += hba->bfw_stats.fc_crc_cnt;
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BNX2FC_STATS(hba, tx_stat, fcoe_tx_pkt_cnt);
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bnx2fc_stats->tx_frames += hba->bfw_stats.fcoe_tx_pkt_cnt;
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BNX2FC_STATS(hba, tx_stat, fcoe_tx_byte_cnt);
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bnx2fc_stats->tx_words += ((hba->bfw_stats.fcoe_tx_byte_cnt) / 4);
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BNX2FC_STATS(hba, rx_stat0, fcoe_rx_pkt_cnt);
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bnx2fc_stats->rx_frames += hba->bfw_stats.fcoe_rx_pkt_cnt;
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BNX2FC_STATS(hba, rx_stat0, fcoe_rx_byte_cnt);
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bnx2fc_stats->rx_words += ((hba->bfw_stats.fcoe_rx_byte_cnt) / 4);
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bnx2fc_stats->dumped_frames = 0;
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bnx2fc_stats->lip_count = 0;
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@ -700,6 +705,8 @@ static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
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bnx2fc_stats->loss_of_signal_count = 0;
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bnx2fc_stats->prim_seq_protocol_err_count = 0;
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memcpy(&hba->prev_stats, hba->stats_buffer,
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sizeof(struct fcoe_statistics_params));
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return bnx2fc_stats;
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}
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