Index: sys/net/bpf.c
===================================================================
RCS file: /cvs/src/sys/net/bpf.c,v
retrieving revision 1.192
diff -u -p -r1.192 bpf.c
--- sys/net/bpf.c	18 Jun 2020 23:32:00 -0000	1.192
+++ sys/net/bpf.c	17 Nov 2020 05:08:49 -0000
@@ -894,12 +894,21 @@ bpfioctl(dev_t dev, u_long cmd, caddr_t 
 	/*
 	 * Get packet stats.
 	 */
+	case BIOCGOSTATS:
+		{
+			struct bpf_ostat *bs = (struct bpf_ostat *)addr;
+
+			bs->bs_recv = d->bd_rcount;
+			bs->bs_drop = d->bd_dcount;
+			break;
+		}
 	case BIOCGSTATS:
 		{
 			struct bpf_stat *bs = (struct bpf_stat *)addr;
 
 			bs->bs_recv = d->bd_rcount;
 			bs->bs_drop = d->bd_dcount;
+			bs->bs_ifdrop = d->bd_icount;
 			break;
 		}
 
@@ -1286,6 +1295,8 @@ _bpf_mtap(caddr_t arg, const struct mbuf
 		struct bpf_insn *fcode = NULL;
 
 		atomic_inc_long(&d->bd_rcount);
+		if (ISSET(mp->m_flags, M_PKTHDR))
+			atomic_add_long(&d->bd_icount, mp->m_pkthdr.ph_drops);
 
 		if (ISSET(d->bd_dirfilt, direction))
 			continue;
Index: sys/net/bpf.h
===================================================================
RCS file: /cvs/src/sys/net/bpf.h,v
retrieving revision 1.70
diff -u -p -r1.70 bpf.h
--- sys/net/bpf.h	3 Aug 2020 03:21:24 -0000	1.70
+++ sys/net/bpf.h	17 Nov 2020 05:08:49 -0000
@@ -70,6 +70,12 @@ struct bpf_program {
 struct bpf_stat {
 	u_int bs_recv;		/* number of packets received */
 	u_int bs_drop;		/* number of packets dropped */
+	u_int bs_ifdrop;	/* number of packets dropped by interface */
+};
+
+struct bpf_ostat {
+	u_int bs_recv;		/* number of packets received */
+	u_int bs_drop;		/* number of packets dropped */
 };
 
 /*
@@ -104,6 +110,7 @@ struct bpf_version {
 #define BIOCSETIF	_IOW('B',108, struct ifreq)
 #define BIOCSRTIMEOUT	_IOW('B',109, struct timeval)
 #define BIOCGRTIMEOUT	_IOR('B',110, struct timeval)
+#define BIOCGOSTATS	_IOR('B',111, struct bpf_ostat)
 #define BIOCGSTATS	_IOR('B',111, struct bpf_stat)
 #define BIOCIMMEDIATE	_IOW('B',112, u_int)
 #define BIOCVERSION	_IOR('B',113, struct bpf_version)
Index: sys/net/bpfdesc.h
===================================================================
RCS file: /cvs/src/sys/net/bpfdesc.h,v
retrieving revision 1.41
diff -u -p -r1.41 bpfdesc.h
--- sys/net/bpfdesc.h	13 May 2020 21:34:37 -0000	1.41
+++ sys/net/bpfdesc.h	17 Nov 2020 05:08:49 -0000
@@ -81,6 +81,7 @@ struct bpf_d {
 		       *bd_wfilter;	/* write filter code */
 	u_long		bd_rcount;	/* number of packets received */
 	u_long		bd_dcount;	/* number of packets dropped */
+	u_long		bd_icount;	/* number of packets dropped in hw */
 
 	u_char		bd_promisc;	/* true if listening promiscuously */
 	u_char		bd_state;	/* idle, waiting, or timed out */
Index: lib/libpcap/pcap-bpf.c
===================================================================
RCS file: /cvs/src/lib/libpcap/pcap-bpf.c,v
retrieving revision 1.37
diff -u -p -r1.37 pcap-bpf.c
--- lib/libpcap/pcap-bpf.c	28 Jun 2019 13:32:42 -0000	1.37
+++ lib/libpcap/pcap-bpf.c	17 Nov 2020 05:08:49 -0000
@@ -63,6 +63,7 @@ pcap_stats(pcap_t *p, struct pcap_stat *
 
 	ps->ps_recv = s.bs_recv;
 	ps->ps_drop = s.bs_drop;
+	ps->ps_ifdrop = s.bs_ifdrop;
 	return (0);
 }