From: Rahul Lakkireddy Date: Mon, 9 Jul 2018 16:12:47 +0000 (+0530) Subject: cxgb4: expose stats fetched from firmware via debugfs X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=31e5f5c3e92f6560485d7625f772e36aec6d42ec;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Ganesh Goudar Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 516c883e1613..511606fd1b20 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -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.