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chelsiocudbgdavem330
chelsiocudbg
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davem330
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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: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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‎drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

Lines changed: 164 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2962,6 +2962,169 @@ static const struct file_operations chcr_stats_debugfs_fops = {
29622962
.llseek = seq_lseek,
29632963
.release = single_release,
29642964
};
2965+
2966+
#define PRINT_ADAP_STATS(string, value) \
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seq_printf(seq, "%-25s %-20llu\n", (string), \
2968+
(unsigned long long)(value))
2969+
2970+
#define PRINT_CH_STATS(string, value) \
2971+
do { \
2972+
seq_printf(seq, "%-25s ", (string)); \
2973+
for (i = 0; i < adap->params.arch.nchan; i++) \
2974+
seq_printf(seq, "%-20llu ", \
2975+
(unsigned long long)stats.value[i]); \
2976+
seq_printf(seq, "\n"); \
2977+
} while (0)
2978+
2979+
#define PRINT_CH_STATS2(string, value) \
2980+
do { \
2981+
seq_printf(seq, "%-25s ", (string)); \
2982+
for (i = 0; i < adap->params.arch.nchan; i++) \
2983+
seq_printf(seq, "%-20llu ", \
2984+
(unsigned long long)stats[i].value); \
2985+
seq_printf(seq, "\n"); \
2986+
} while (0)
2987+
2988+
static void show_tcp_stats(struct seq_file *seq)
2989+
{
2990+
struct adapter *adap = seq->private;
2991+
struct tp_tcp_stats v4, v6;
2992+
2993+
spin_lock(&adap->stats_lock);
2994+
t4_tp_get_tcp_stats(adap, &v4, &v6, false);
2995+
spin_unlock(&adap->stats_lock);
2996+
2997+
PRINT_ADAP_STATS("tcp_ipv4_out_rsts:", v4.tcp_out_rsts);
2998+
PRINT_ADAP_STATS("tcp_ipv4_in_segs:", v4.tcp_in_segs);
2999+
PRINT_ADAP_STATS("tcp_ipv4_out_segs:", v4.tcp_out_segs);
3000+
PRINT_ADAP_STATS("tcp_ipv4_retrans_segs:", v4.tcp_retrans_segs);
3001+
PRINT_ADAP_STATS("tcp_ipv6_out_rsts:", v6.tcp_out_rsts);
3002+
PRINT_ADAP_STATS("tcp_ipv6_in_segs:", v6.tcp_in_segs);
3003+
PRINT_ADAP_STATS("tcp_ipv6_out_segs:", v6.tcp_out_segs);
3004+
PRINT_ADAP_STATS("tcp_ipv6_retrans_segs:", v6.tcp_retrans_segs);
3005+
}
3006+
3007+
static void show_ddp_stats(struct seq_file *seq)
3008+
{
3009+
struct adapter *adap = seq->private;
3010+
struct tp_usm_stats stats;
3011+
3012+
spin_lock(&adap->stats_lock);
3013+
t4_get_usm_stats(adap, &stats, false);
3014+
spin_unlock(&adap->stats_lock);
3015+
3016+
PRINT_ADAP_STATS("usm_ddp_frames:", stats.frames);
3017+
PRINT_ADAP_STATS("usm_ddp_octets:", stats.octets);
3018+
PRINT_ADAP_STATS("usm_ddp_drops:", stats.drops);
3019+
}
3020+
3021+
static void show_rdma_stats(struct seq_file *seq)
3022+
{
3023+
struct adapter *adap = seq->private;
3024+
struct tp_rdma_stats stats;
3025+
3026+
spin_lock(&adap->stats_lock);
3027+
t4_tp_get_rdma_stats(adap, &stats, false);
3028+
spin_unlock(&adap->stats_lock);
3029+
3030+
PRINT_ADAP_STATS("rdma_no_rqe_mod_defer:", stats.rqe_dfr_mod);
3031+
PRINT_ADAP_STATS("rdma_no_rqe_pkt_defer:", stats.rqe_dfr_pkt);
3032+
}
3033+
3034+
static void show_tp_err_adapter_stats(struct seq_file *seq)
3035+
{
3036+
struct adapter *adap = seq->private;
3037+
struct tp_err_stats stats;
3038+
3039+
spin_lock(&adap->stats_lock);
3040+
t4_tp_get_err_stats(adap, &stats, false);
3041+
spin_unlock(&adap->stats_lock);
3042+
3043+
PRINT_ADAP_STATS("tp_err_ofld_no_neigh:", stats.ofld_no_neigh);
3044+
PRINT_ADAP_STATS("tp_err_ofld_cong_defer:", stats.ofld_cong_defer);
3045+
}
3046+
3047+
static void show_cpl_stats(struct seq_file *seq)
3048+
{
3049+
struct adapter *adap = seq->private;
3050+
struct tp_cpl_stats stats;
3051+
u8 i;
3052+
3053+
spin_lock(&adap->stats_lock);
3054+
t4_tp_get_cpl_stats(adap, &stats, false);
3055+
spin_unlock(&adap->stats_lock);
3056+
3057+
PRINT_CH_STATS("tp_cpl_requests:", req);
3058+
PRINT_CH_STATS("tp_cpl_responses:", rsp);
3059+
}
3060+
3061+
static void show_tp_err_channel_stats(struct seq_file *seq)
3062+
{
3063+
struct adapter *adap = seq->private;
3064+
struct tp_err_stats stats;
3065+
u8 i;
3066+
3067+
spin_lock(&adap->stats_lock);
3068+
t4_tp_get_err_stats(adap, &stats, false);
3069+
spin_unlock(&adap->stats_lock);
3070+
3071+
PRINT_CH_STATS("tp_mac_in_errs:", mac_in_errs);
3072+
PRINT_CH_STATS("tp_hdr_in_errs:", hdr_in_errs);
3073+
PRINT_CH_STATS("tp_tcp_in_errs:", tcp_in_errs);
3074+
PRINT_CH_STATS("tp_tcp6_in_errs:", tcp6_in_errs);
3075+
PRINT_CH_STATS("tp_tnl_cong_drops:", tnl_cong_drops);
3076+
PRINT_CH_STATS("tp_tnl_tx_drops:", tnl_tx_drops);
3077+
PRINT_CH_STATS("tp_ofld_vlan_drops:", ofld_vlan_drops);
3078+
PRINT_CH_STATS("tp_ofld_chan_drops:", ofld_chan_drops);
3079+
}
3080+
3081+
static void show_fcoe_stats(struct seq_file *seq)
3082+
{
3083+
struct adapter *adap = seq->private;
3084+
struct tp_fcoe_stats stats[NCHAN];
3085+
u8 i;
3086+
3087+
spin_lock(&adap->stats_lock);
3088+
for (i = 0; i < adap->params.arch.nchan; i++)
3089+
t4_get_fcoe_stats(adap, i, &stats[i], false);
3090+
spin_unlock(&adap->stats_lock);
3091+
3092+
PRINT_CH_STATS2("fcoe_octets_ddp", octets_ddp);
3093+
PRINT_CH_STATS2("fcoe_frames_ddp", frames_ddp);
3094+
PRINT_CH_STATS2("fcoe_frames_drop", frames_drop);
3095+
}
3096+
3097+
#undef PRINT_CH_STATS2
3098+
#undef PRINT_CH_STATS
3099+
#undef PRINT_ADAP_STATS
3100+
3101+
static int tp_stats_show(struct seq_file *seq, void *v)
3102+
{
3103+
struct adapter *adap = seq->private;
3104+
3105+
seq_puts(seq, "\n--------Adapter Stats--------\n");
3106+
show_tcp_stats(seq);
3107+
show_ddp_stats(seq);
3108+
show_rdma_stats(seq);
3109+
show_tp_err_adapter_stats(seq);
3110+
3111+
seq_puts(seq, "\n-------- Channel Stats --------\n");
3112+
if (adap->params.arch.nchan == NCHAN)
3113+
seq_printf(seq, "%-25s %-20s %-20s %-20s %-20s\n",
3114+
" ", "channel 0", "channel 1",
3115+
"channel 2", "channel 3");
3116+
else
3117+
seq_printf(seq, "%-25s %-20s %-20s\n",
3118+
" ", "channel 0", "channel 1");
3119+
show_cpl_stats(seq);
3120+
show_tp_err_channel_stats(seq);
3121+
show_fcoe_stats(seq);
3122+
3123+
return 0;
3124+
}
3125+
3126+
DEFINE_SIMPLE_DEBUGFS_FILE(tp_stats);
3127+
29653128
/* Add an array of Debug FS files.
29663129
*/
29673130
void add_debugfs_files(struct adapter *adap,
@@ -3038,6 +3201,7 @@ int t4_setup_debugfs(struct adapter *adap)
30383201
{ "blocked_fl", &blocked_fl_fops, 0600, 0 },
30393202
{ "meminfo", &meminfo_fops, 0400, 0 },
30403203
{ "crypto", &chcr_stats_debugfs_fops, 0400, 0 },
3204+
{ "tp_stats", &tp_stats_debugfs_fops, 0400, 0 },
30413205
};
30423206

30433207
/* Debug FS nodes common to all T5 and later adapters.

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