The branch main has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=02923dd9b0de050b989b5a4103e402055cb7f61a
commit 02923dd9b0de050b989b5a4103e402055cb7f61a Author: Kristof Provost <[email protected]> AuthorDate: 2025-10-10 10:06:21 +0000 Commit: Kristof Provost <[email protected]> CommitDate: 2025-10-11 11:24:25 +0000 dummynet: SDT probe dropped packets Add static probe points to track where we increment io_pkt_drop. This is intended to assist in debugging dummynet, allowing us to work out when and hopefully why packets get dropped. Sponsored by: Rubicon Communications, LLC ("Netgate") --- sys/netpfil/ipfw/ip_dn_io.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/netpfil/ipfw/ip_dn_io.c b/sys/netpfil/ipfw/ip_dn_io.c index 03116cb0641c..3a8de2b2bfee 100644 --- a/sys/netpfil/ipfw/ip_dn_io.c +++ b/sys/netpfil/ipfw/ip_dn_io.c @@ -43,6 +43,7 @@ #include <sys/priv.h> #include <sys/proc.h> #include <sys/rwlock.h> +#include <sys/sdt.h> #include <sys/socket.h> #include <sys/time.h> #include <sys/sysctl.h> @@ -70,6 +71,9 @@ #endif #include <netpfil/ipfw/dn_sched.h> +SDT_PROVIDER_DEFINE(dummynet); +SDT_PROBE_DEFINE2(dummynet, , , drop, "struct mbuf *", "struct dn_queue *"); + /* * We keep a private variable for the simulation time, but we could * probably use an existing one ("softticks" in sys/kern/kern_timeout.c) @@ -545,6 +549,7 @@ dn_enqueue(struct dn_queue *q, struct mbuf* m, int drop) drop: V_dn_cfg.io_pkt_drop++; + SDT_PROBE2(dummynet, , , drop, m, q); q->ni.drops++; ni->drops++; FREE_PKT(m); @@ -1001,6 +1006,7 @@ done: dropit: V_dn_cfg.io_pkt_drop++; + SDT_PROBE2(dummynet, , , drop, m, q); DN_BH_WUNLOCK(); if (m) FREE_PKT(m);
