The branch main has been updated by kp:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=cd5671efc0190ba0f9eb41bba42e703277af20c3

commit cd5671efc0190ba0f9eb41bba42e703277af20c3
Author:     Kristof Provost <[email protected]>
AuthorDate: 2021-03-09 15:27:31 +0000
Commit:     Kristof Provost <[email protected]>
CommitDate: 2021-03-23 17:01:58 +0000

    dummynet: Move packet counters into dn_cfg
    
    Move the packets counters into the dn_cfg struct. This reduces the
    global name space use for dummynet and will make future work for things
    like vnet support and re-use in pf easier.
    
    Reviewed by:    donner
    MFC after:      2 weeks
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D29245
---
 sys/netpfil/ipfw/dn_aqm.h            |  5 +----
 sys/netpfil/ipfw/dn_sched_fq_codel.h |  2 +-
 sys/netpfil/ipfw/dn_sched_fq_pie.c   |  2 +-
 sys/netpfil/ipfw/ip_dn_io.c          | 24 ++++++++----------------
 sys/netpfil/ipfw/ip_dn_private.h     |  5 +++++
 5 files changed, 16 insertions(+), 22 deletions(-)

diff --git a/sys/netpfil/ipfw/dn_aqm.h b/sys/netpfil/ipfw/dn_aqm.h
index a8a362a4bde9..8bbe9fe69e86 100644
--- a/sys/netpfil/ipfw/dn_aqm.h
+++ b/sys/netpfil/ipfw/dn_aqm.h
@@ -53,9 +53,6 @@ typedef int32_t aqm_stime_t;
 /* Macro for variable bounding */
 #define BOUND_VAR(x,l,h)  ((x) > (h)? (h) : ((x) > (l)? (x) : (l)))
 
-/* sysctl variable to count number of dropped packets */
-extern unsigned long io_pkt_drop; 
-
 /*
  * Structure for holding data and function pointers that together represent a
  * AQM algorithm.
@@ -137,7 +134,7 @@ update_stats(struct dn_queue *q, int len, int drop)
        if (drop) {
                        qni->drops++;
                        sni->drops++;
-                       io_pkt_drop++;
+                       dn_cfg.io_pkt_drop++;
        } else {
                /*update queue stats */
                qni->length += inc;
diff --git a/sys/netpfil/ipfw/dn_sched_fq_codel.h 
b/sys/netpfil/ipfw/dn_sched_fq_codel.h
index 725189483ba2..a8369ac83129 100644
--- a/sys/netpfil/ipfw/dn_sched_fq_codel.h
+++ b/sys/netpfil/ipfw/dn_sched_fq_codel.h
@@ -104,7 +104,7 @@ fq_update_stats(struct fq_codel_flow *q, struct fq_codel_si 
*si, int len,
                si->main_q.ni.drops ++;
                q->stats.drops ++;
                si->_si.ni.drops ++;
-               io_pkt_drop ++;
+               dn_cfg.io_pkt_drop ++;
        } 
 
        if (!drop || (drop && len < 0)) {
diff --git a/sys/netpfil/ipfw/dn_sched_fq_pie.c 
b/sys/netpfil/ipfw/dn_sched_fq_pie.c
index 2f21ca77e33a..257dada44345 100644
--- a/sys/netpfil/ipfw/dn_sched_fq_pie.c
+++ b/sys/netpfil/ipfw/dn_sched_fq_pie.c
@@ -299,7 +299,7 @@ fq_update_stats(struct fq_pie_flow *q, struct fq_pie_si 
*si, int len,
                si->main_q.ni.drops ++;
                q->stats.drops ++;
                si->_si.ni.drops ++;
-               io_pkt_drop ++;
+               dn_cfg.io_pkt_drop ++;
        } 
 
        if (!drop || (drop && len < 0)) {
diff --git a/sys/netpfil/ipfw/ip_dn_io.c b/sys/netpfil/ipfw/ip_dn_io.c
index 1b39fcb0359f..f71d07ae1140 100644
--- a/sys/netpfil/ipfw/ip_dn_io.c
+++ b/sys/netpfil/ipfw/ip_dn_io.c
@@ -88,14 +88,6 @@ static long tick_lost;               /* Lost(coalesced) 
ticks number. */
 /* Adjusted vs non-adjusted curr_time difference (ticks). */
 static long tick_diff;
 
-static unsigned long   io_pkt;
-static unsigned long   io_pkt_fast;
-
-#ifdef NEW_AQM
-unsigned long  io_pkt_drop;
-#else
-static unsigned long   io_pkt_drop;
-#endif
 /*
  * We use a heap to store entities for which we have pending timer events.
  * The heap is checked at every tick and all entities with expired events
@@ -228,13 +220,13 @@ SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, fsk_count,
 SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, queue_count,
     CTLFLAG_RD, DC(queue_count), 0, "Number of queues");
 SYSCTL_ULONG(_net_inet_ip_dummynet, OID_AUTO, io_pkt,
-    CTLFLAG_RD, &io_pkt, 0,
+    CTLFLAG_RD, DC(io_pkt), 0,
     "Number of packets passed to dummynet.");
 SYSCTL_ULONG(_net_inet_ip_dummynet, OID_AUTO, io_pkt_fast,
-    CTLFLAG_RD, &io_pkt_fast, 0,
+    CTLFLAG_RD, DC(io_pkt_fast), 0,
     "Number of packets bypassed dummynet scheduler.");
 SYSCTL_ULONG(_net_inet_ip_dummynet, OID_AUTO, io_pkt_drop,
-    CTLFLAG_RD, &io_pkt_drop, 0,
+    CTLFLAG_RD, DC(io_pkt_drop), 0,
     "Number of packets dropped by dummynet.");
 #undef DC
 SYSEND
@@ -540,7 +532,7 @@ dn_enqueue(struct dn_queue *q, struct mbuf* m, int drop)
        return (0);
 
 drop:
-       io_pkt_drop++;
+       dn_cfg.io_pkt_drop++;
        q->ni.drops++;
        ni->drops++;
        FREE_PKT(m);
@@ -882,7 +874,7 @@ dummynet_io(struct mbuf **m0, struct ip_fw_args *fwa)
        else if (fwa->flags & IPFW_ARGS_IP6)
                dir |= PROTO_IPV6;
        DN_BH_WLOCK();
-       io_pkt++;
+       dn_cfg.io_pkt++;
        /* we could actually tag outside the lock, but who cares... */
        if (tag_mbuf(m, dir, fwa))
                goto dropit;
@@ -918,7 +910,7 @@ dummynet_io(struct mbuf **m0, struct ip_fw_args *fwa)
                m = *m0 = NULL;
 
                /* dn_enqueue already increases io_pkt_drop */
-               io_pkt_drop--;
+               dn_cfg.io_pkt_drop--;
 
                goto dropit;
        }
@@ -956,7 +948,7 @@ dummynet_io(struct mbuf **m0, struct ip_fw_args *fwa)
 
                tag->m_tag_cookie = MTAG_IPFW_RULE;
                tag->m_tag_id = 0;
-               io_pkt_fast++;
+               dn_cfg.io_pkt_fast++;
                if (m->m_nextpkt != NULL) {
                        printf("dummynet: fast io: pkt chain detected!\n");
                        m->m_nextpkt = NULL;
@@ -972,7 +964,7 @@ done:
        return 0;
 
 dropit:
-       io_pkt_drop++;
+       dn_cfg.io_pkt_drop++;
        DN_BH_WUNLOCK();
        if (m)
                FREE_PKT(m);
diff --git a/sys/netpfil/ipfw/ip_dn_private.h b/sys/netpfil/ipfw/ip_dn_private.h
index 24765bc09b0e..38c6ff1201d5 100644
--- a/sys/netpfil/ipfw/ip_dn_private.h
+++ b/sys/netpfil/ipfw/ip_dn_private.h
@@ -131,6 +131,11 @@ struct dn_parms {
        int     fsk_count;
        int     queue_count;
 
+       /* packet counters */
+       unsigned long   io_pkt;
+       unsigned long   io_pkt_fast;
+       unsigned long   io_pkt_drop;
+
        /* ticks and other stuff */
        uint64_t        curr_time;
        /* flowsets and schedulers are in hash tables, with 'hash_size'
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