rps: selective flow shedding during softnet overflow

[~andy/linux] / net / core / net-procfs.c

diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
index 569d355fec3e8adac815c1819e43abbac98fcf39..2bf83299600a4ac8eb56069295bbc755709642b1 100644 (file)
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -146,11 +146,23 @@ static void softnet_seq_stop(struct seq_file *seq, void *v)
 static int softnet_seq_show(struct seq_file *seq, void *v)
 {
        struct softnet_data *sd = v;
+       unsigned int flow_limit_count = 0;
 
-       seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+#ifdef CONFIG_NET_FLOW_LIMIT
+       struct sd_flow_limit *fl;
+
+       rcu_read_lock();
+       fl = rcu_dereference(sd->flow_limit);
+       if (fl)
+               flow_limit_count = fl->count;
+       rcu_read_unlock();
+#endif
+
+       seq_printf(seq,
+                  "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
                   sd->processed, sd->dropped, sd->time_squeeze, 0,
                   0, 0, 0, 0, /* was fastroute */
-                  sd->cpu_collision, sd->received_rps);
+                  sd->cpu_collision, sd->received_rps, flow_limit_count);
        return 0;
 }