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authorbrakmo <brakmo@fb.com>2019-05-28 16:59:40 -0700
committerAlexei Starovoitov <ast@kernel.org>2019-05-31 16:41:29 -0700
commitd58c6f7212f4eda59ca94cbfbaa785dde7675456 (patch)
tree84c6e60b4f3ca303da138d79f55747c6222213eb /samples/bpf/hbm.c
parentffd81558d56c611b1e93f856c77f42046a2deab5 (diff)
bpf: Add more stats to HBM
Adds more stats to HBM, including average cwnd and rtt of all TCP flows, percents of packets that are ecn ce marked and distribution of return values. Signed-off-by: Lawrence Brakmo <brakmo@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples/bpf/hbm.c')
-rw-r--r--samples/bpf/hbm.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c
index c5629bae67ab..480b7ad6a1f2 100644
--- a/samples/bpf/hbm.c
+++ b/samples/bpf/hbm.c
@@ -316,6 +316,14 @@ static int run_bpf_prog(char *prog, int cg_id)
double percent_pkts, percent_bytes;
char fname[100];
FILE *fout;
+ int k;
+ static const char *returnValNames[] = {
+ "DROP_PKT",
+ "ALLOW_PKT",
+ "DROP_PKT_CWR",
+ "ALLOW_PKT_CWR"
+ };
+#define RET_VAL_COUNT 4
// Future support of ingress
// if (!outFlag)
@@ -350,6 +358,31 @@ static int run_bpf_prog(char *prog, int cg_id)
(qstats.bytes_total + 1);
fprintf(fout, "pkts_dropped_percent:%6.2f\n", percent_pkts);
fprintf(fout, "bytes_dropped_percent:%6.2f\n", percent_bytes);
+
+ // ECN CE markings
+ percent_pkts = (qstats.pkts_ecn_ce * 100.0) /
+ (qstats.pkts_total + 1);
+ fprintf(fout, "pkts_ecn_ce:%6.2f (%d)\n", percent_pkts,
+ (int)qstats.pkts_ecn_ce);
+
+ // Average cwnd
+ fprintf(fout, "avg cwnd:%d\n",
+ (int)(qstats.sum_cwnd / (qstats.sum_cwnd_cnt + 1)));
+ // Average rtt
+ fprintf(fout, "avg rtt:%d\n",
+ (int)(qstats.sum_rtt / (qstats.pkts_total + 1)));
+ // Average credit
+ fprintf(fout, "avg credit:%d\n",
+ (int)(qstats.sum_credit /
+ (1500 * ((int)qstats.pkts_total) + 1)));
+
+ // Return values stats
+ for (k = 0; k < RET_VAL_COUNT; k++) {
+ percent_pkts = (qstats.returnValCount[k] * 100.0) /
+ (qstats.pkts_total + 1);
+ fprintf(fout, "%s:%6.2f (%d)\n", returnValNames[k],
+ percent_pkts, (int)qstats.returnValCount[k]);
+ }
fclose(fout);
}