Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 31e5f5c3 authored by Rahul Lakkireddy's avatar Rahul Lakkireddy Committed by David S. Miller
Browse files

cxgb4: expose stats fetched from firmware via debugfs 



Expose stats obtained from firmware via debugfs. These stats can't
be part of ethtool -S because the slow firmware mailbox can cause
packet drops under heavy load.

Signed-off-by: default avatarRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b351b16d

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

+164 −0
Original line number Diff line number Diff line
@@ -2962,6 +2962,169 @@ static const struct file_operations chcr_stats_debugfs_fops = { 
        .llseek  = seq_lseek,

        .release = single_release,

};



#define PRINT_ADAP_STATS(string, value) \

	seq_printf(seq, "%-25s %-20llu\n", (string), \

		   (unsigned long long)(value))



#define PRINT_CH_STATS(string, value) \

do { \

	seq_printf(seq, "%-25s ", (string)); \

	for (i = 0; i < adap->params.arch.nchan; i++) \

		seq_printf(seq, "%-20llu ", \

			   (unsigned long long)stats.value[i]); \

	seq_printf(seq, "\n"); \

} while (0)



#define PRINT_CH_STATS2(string, value) \

do { \

	seq_printf(seq, "%-25s ", (string)); \

	for (i = 0; i < adap->params.arch.nchan; i++) \

		seq_printf(seq, "%-20llu ", \

			   (unsigned long long)stats[i].value); \

	seq_printf(seq, "\n"); \

} while (0)



static void show_tcp_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_tcp_stats v4, v6;



	spin_lock(&adap->stats_lock);

	t4_tp_get_tcp_stats(adap, &v4, &v6, false);

	spin_unlock(&adap->stats_lock);



	PRINT_ADAP_STATS("tcp_ipv4_out_rsts:", v4.tcp_out_rsts);

	PRINT_ADAP_STATS("tcp_ipv4_in_segs:", v4.tcp_in_segs);

	PRINT_ADAP_STATS("tcp_ipv4_out_segs:", v4.tcp_out_segs);

	PRINT_ADAP_STATS("tcp_ipv4_retrans_segs:", v4.tcp_retrans_segs);

	PRINT_ADAP_STATS("tcp_ipv6_out_rsts:", v6.tcp_out_rsts);

	PRINT_ADAP_STATS("tcp_ipv6_in_segs:", v6.tcp_in_segs);

	PRINT_ADAP_STATS("tcp_ipv6_out_segs:", v6.tcp_out_segs);

	PRINT_ADAP_STATS("tcp_ipv6_retrans_segs:", v6.tcp_retrans_segs);

}



static void show_ddp_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_usm_stats stats;



	spin_lock(&adap->stats_lock);

	t4_get_usm_stats(adap, &stats, false);

	spin_unlock(&adap->stats_lock);



	PRINT_ADAP_STATS("usm_ddp_frames:", stats.frames);

	PRINT_ADAP_STATS("usm_ddp_octets:", stats.octets);

	PRINT_ADAP_STATS("usm_ddp_drops:", stats.drops);

}



static void show_rdma_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_rdma_stats stats;



	spin_lock(&adap->stats_lock);

	t4_tp_get_rdma_stats(adap, &stats, false);

	spin_unlock(&adap->stats_lock);



	PRINT_ADAP_STATS("rdma_no_rqe_mod_defer:", stats.rqe_dfr_mod);

	PRINT_ADAP_STATS("rdma_no_rqe_pkt_defer:", stats.rqe_dfr_pkt);

}



static void show_tp_err_adapter_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_err_stats stats;



	spin_lock(&adap->stats_lock);

	t4_tp_get_err_stats(adap, &stats, false);

	spin_unlock(&adap->stats_lock);



	PRINT_ADAP_STATS("tp_err_ofld_no_neigh:", stats.ofld_no_neigh);

	PRINT_ADAP_STATS("tp_err_ofld_cong_defer:", stats.ofld_cong_defer);

}



static void show_cpl_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_cpl_stats stats;

	u8 i;



	spin_lock(&adap->stats_lock);

	t4_tp_get_cpl_stats(adap, &stats, false);

	spin_unlock(&adap->stats_lock);



	PRINT_CH_STATS("tp_cpl_requests:", req);

	PRINT_CH_STATS("tp_cpl_responses:", rsp);

}



static void show_tp_err_channel_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_err_stats stats;

	u8 i;



	spin_lock(&adap->stats_lock);

	t4_tp_get_err_stats(adap, &stats, false);

	spin_unlock(&adap->stats_lock);



	PRINT_CH_STATS("tp_mac_in_errs:", mac_in_errs);

	PRINT_CH_STATS("tp_hdr_in_errs:", hdr_in_errs);

	PRINT_CH_STATS("tp_tcp_in_errs:", tcp_in_errs);

	PRINT_CH_STATS("tp_tcp6_in_errs:", tcp6_in_errs);

	PRINT_CH_STATS("tp_tnl_cong_drops:", tnl_cong_drops);

	PRINT_CH_STATS("tp_tnl_tx_drops:", tnl_tx_drops);

	PRINT_CH_STATS("tp_ofld_vlan_drops:", ofld_vlan_drops);

	PRINT_CH_STATS("tp_ofld_chan_drops:", ofld_chan_drops);

}



static void show_fcoe_stats(struct seq_file *seq)

{

	struct adapter *adap = seq->private;

	struct tp_fcoe_stats stats[NCHAN];

	u8 i;



	spin_lock(&adap->stats_lock);

	for (i = 0; i < adap->params.arch.nchan; i++)

		t4_get_fcoe_stats(adap, i, &stats[i], false);

	spin_unlock(&adap->stats_lock);



	PRINT_CH_STATS2("fcoe_octets_ddp", octets_ddp);

	PRINT_CH_STATS2("fcoe_frames_ddp", frames_ddp);

	PRINT_CH_STATS2("fcoe_frames_drop", frames_drop);

}



#undef PRINT_CH_STATS2

#undef PRINT_CH_STATS

#undef PRINT_ADAP_STATS



static int tp_stats_show(struct seq_file *seq, void *v)

{

	struct adapter *adap = seq->private;



	seq_puts(seq, "\n--------Adapter Stats--------\n");

	show_tcp_stats(seq);

	show_ddp_stats(seq);

	show_rdma_stats(seq);

	show_tp_err_adapter_stats(seq);



	seq_puts(seq, "\n-------- Channel Stats --------\n");

	if (adap->params.arch.nchan == NCHAN)

		seq_printf(seq, "%-25s %-20s %-20s %-20s %-20s\n",

			   " ", "channel 0", "channel 1",

			   "channel 2", "channel 3");

	else

		seq_printf(seq, "%-25s %-20s %-20s\n",

			   " ", "channel 0", "channel 1");

	show_cpl_stats(seq);

	show_tp_err_channel_stats(seq);

	show_fcoe_stats(seq);



	return 0;

}



DEFINE_SIMPLE_DEBUGFS_FILE(tp_stats);



/* Add an array of Debug FS files.

 */

void add_debugfs_files(struct adapter *adap,
@@ -3038,6 +3201,7 @@ int t4_setup_debugfs(struct adapter *adap) 
		{ "blocked_fl", &blocked_fl_fops, 0600, 0 },

		{ "meminfo", &meminfo_fops, 0400, 0 },

		{ "crypto", &chcr_stats_debugfs_fops, 0400, 0 },

		{ "tp_stats", &tp_stats_debugfs_fops, 0400, 0 },

	};



	/* Debug FS nodes common to all T5 and later adapters.