Adding upstream version 6.8.0.upstream/6.8.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 5887 insertions, 0 deletions

diff --git a/misc/ss.c b/misc/ss.c
new file mode 100644
index 0000000..fb560a5
--- /dev/null
+++ b/misc/ss.c
@@ -0,0 +1,5887 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ss.c		"sockstat", socket statistics
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <sys/sysmacros.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <errno.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <dirent.h>
+#include <fnmatch.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <ctype.h>
+
+#include "ss_util.h"
+#include "utils.h"
+#include "ll_map.h"
+#include "libnetlink.h"
+#include "namespace.h"
+#include "version.h"
+#include "rt_names.h"
+#include "cg_map.h"
+#include "selinux.h"
+
+#include <linux/tcp.h>
+#include <linux/unix_diag.h>
+#include <linux/netdevice.h>	/* for MAX_ADDR_LEN */
+#include <linux/filter.h>
+#include <linux/xdp_diag.h>
+#include <linux/packet_diag.h>
+#include <linux/netlink_diag.h>
+#include <linux/sctp.h>
+#include <linux/vm_sockets_diag.h>
+#include <linux/net.h>
+#include <linux/tipc.h>
+#include <linux/tipc_netlink.h>
+#include <linux/tipc_sockets_diag.h>
+#include <linux/tls.h>
+#include <linux/mptcp.h>
+
+#if HAVE_RPC
+#include <rpc/rpc.h>
+#include <rpc/xdr.h>
+#endif
+
+/* AF_VSOCK/PF_VSOCK is only provided since glibc 2.18 */
+#ifndef PF_VSOCK
+#define PF_VSOCK 40
+#endif
+#ifndef AF_VSOCK
+#define AF_VSOCK PF_VSOCK
+#endif
+
+#ifndef IPPROTO_MPTCP
+#define IPPROTO_MPTCP 262
+#endif
+
+#define BUF_CHUNK (1024 * 1024)	/* Buffer chunk allocation size */
+#define BUF_CHUNKS_MAX 5	/* Maximum number of allocated buffer chunks */
+#define LEN_ALIGN(x) (((x) + 1) & ~1)
+
+int preferred_family = AF_UNSPEC;
+static int show_options;
+int show_details;
+static int show_processes;
+static int show_threads;
+static int show_mem;
+static int show_tcpinfo;
+static int show_bpf;
+static int show_proc_ctx;
+static int show_sock_ctx;
+static int show_header = 1;
+static int follow_events;
+static int sctp_ino;
+static int show_tipcinfo;
+static int show_tos;
+static int show_cgroup;
+static int show_inet_sockopt;
+int oneline;
+
+enum col_id {
+	COL_NETID,
+	COL_STATE,
+	COL_RECVQ,
+	COL_SENDQ,
+	COL_ADDR,
+	COL_SERV,
+	COL_RADDR,
+	COL_RSERV,
+	COL_PROC,
+	COL_EXT,
+	COL_MAX
+};
+
+enum col_align {
+	ALIGN_LEFT,
+	ALIGN_CENTER,
+	ALIGN_RIGHT
+};
+
+struct column {
+	const enum col_align align;
+	const char *header;
+	const char *ldelim;
+	int disabled;
+	int width;	/* Calculated, including additional layout spacing */
+	int max_len;	/* Measured maximum field length in this column */
+};
+
+static struct column columns[] = {
+	{ ALIGN_LEFT,	"Netid",		"",	0, 0, 0 },
+	{ ALIGN_LEFT,	"State",		" ",	0, 0, 0 },
+	{ ALIGN_LEFT,	"Recv-Q",		" ",	0, 0, 0 },
+	{ ALIGN_LEFT,	"Send-Q",		" ",	0, 0, 0 },
+	{ ALIGN_RIGHT,	"Local Address:",	" ",	0, 0, 0 },
+	{ ALIGN_LEFT,	"Port",			"",	0, 0, 0 },
+	{ ALIGN_RIGHT,	"Peer Address:",	" ",	0, 0, 0 },
+	{ ALIGN_LEFT,	"Port",			"",	0, 0, 0 },
+	{ ALIGN_LEFT,	"Process",		"",	0, 0, 0 },
+	{ ALIGN_LEFT,	"",			"",	0, 0, 0 },
+};
+
+static struct column *current_field = columns;
+
+/* Output buffer: chained chunks of BUF_CHUNK bytes. Each field is written to
+ * the buffer as a variable size token. A token consists of a 16 bits length
+ * field, followed by a string which is not NULL-terminated.
+ *
+ * A new chunk is allocated and linked when the current chunk doesn't have
+ * enough room to store the current token as a whole.
+ */
+struct buf_chunk {
+	struct buf_chunk *next;	/* Next chained chunk */
+	char *end;		/* Current end of content */
+	char data[0];
+};
+
+struct buf_token {
+	uint16_t len;		/* Data length, excluding length descriptor */
+	char data[0];
+};
+
+static struct {
+	struct buf_token *cur;	/* Position of current token in chunk */
+	struct buf_chunk *head;	/* First chunk */
+	struct buf_chunk *tail;	/* Current chunk */
+	int chunks;		/* Number of allocated chunks */
+} buffer;
+
+static const char *TCP_PROTO = "tcp";
+static const char *UDP_PROTO = "udp";
+#ifdef HAVE_RPC
+static const char *TCP6_PROTO = "tcp6";
+static const char *UDP6_PROTO = "udp6";
+static const char *SCTP_PROTO = "sctp";
+#endif
+static const char *RAW_PROTO = "raw";
+static const char *dg_proto;
+
+enum {
+	TCP_DB,
+	MPTCP_DB,
+	DCCP_DB,
+	UDP_DB,
+	RAW_DB,
+	UNIX_DG_DB,
+	UNIX_ST_DB,
+	UNIX_SQ_DB,
+	PACKET_DG_DB,
+	PACKET_R_DB,
+	NETLINK_DB,
+	SCTP_DB,
+	VSOCK_ST_DB,
+	VSOCK_DG_DB,
+	TIPC_DB,
+	XDP_DB,
+	MAX_DB
+};
+
+#define PACKET_DBM ((1<<PACKET_DG_DB)|(1<<PACKET_R_DB))
+#define UNIX_DBM ((1<<UNIX_DG_DB)|(1<<UNIX_ST_DB)|(1<<UNIX_SQ_DB))
+#define ALL_DB ((1<<MAX_DB)-1)
+#define INET_L4_DBM ((1<<TCP_DB)|(1<<MPTCP_DB)|(1<<UDP_DB)|(1<<DCCP_DB)|(1<<SCTP_DB))
+#define INET_DBM (INET_L4_DBM | (1<<RAW_DB))
+#define VSOCK_DBM ((1<<VSOCK_ST_DB)|(1<<VSOCK_DG_DB))
+
+enum {
+	SS_UNKNOWN,
+	SS_ESTABLISHED,
+	SS_SYN_SENT,
+	SS_SYN_RECV,
+	SS_FIN_WAIT1,
+	SS_FIN_WAIT2,
+	SS_TIME_WAIT,
+	SS_CLOSE,
+	SS_CLOSE_WAIT,
+	SS_LAST_ACK,
+	SS_LISTEN,
+	SS_CLOSING,
+	SS_NEW_SYN_RECV, /* Kernel only value, not for use in user space */
+	SS_BOUND_INACTIVE,
+	SS_MAX
+};
+
+enum {
+	SCTP_STATE_CLOSED		= 0,
+	SCTP_STATE_COOKIE_WAIT		= 1,
+	SCTP_STATE_COOKIE_ECHOED	= 2,
+	SCTP_STATE_ESTABLISHED		= 3,
+	SCTP_STATE_SHUTDOWN_PENDING	= 4,
+	SCTP_STATE_SHUTDOWN_SENT	= 5,
+	SCTP_STATE_SHUTDOWN_RECEIVED	= 6,
+	SCTP_STATE_SHUTDOWN_ACK_SENT	= 7,
+};
+
+#define SS_ALL ((1 << SS_MAX) - 1)
+#define SS_CONN (SS_ALL & ~((1<<SS_LISTEN)|(1<<SS_CLOSE)|(1<<SS_TIME_WAIT)|(1<<SS_SYN_RECV)))
+#define TIPC_SS_CONN ((1<<SS_ESTABLISHED)|(1<<SS_LISTEN)|(1<<SS_CLOSE))
+
+#include "ssfilter.h"
+
+struct filter {
+	int dbs;
+	int states;
+	uint64_t families;
+	struct ssfilter *f;
+	bool kill;
+	struct rtnl_handle *rth_for_killing;
+};
+
+#define FAMILY_MASK(family) ((uint64_t)1 << (family))
+
+static const struct filter default_dbs[MAX_DB] = {
+	[TCP_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[MPTCP_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[DCCP_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[UDP_DB] = {
+		.states   = (1 << SS_ESTABLISHED),
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[RAW_DB] = {
+		.states   = (1 << SS_ESTABLISHED),
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[UNIX_DG_DB] = {
+		.states   = (1 << SS_CLOSE),
+		.families = FAMILY_MASK(AF_UNIX),
+	},
+	[UNIX_ST_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_UNIX),
+	},
+	[UNIX_SQ_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_UNIX),
+	},
+	[PACKET_DG_DB] = {
+		.states   = (1 << SS_CLOSE),
+		.families = FAMILY_MASK(AF_PACKET),
+	},
+	[PACKET_R_DB] = {
+		.states   = (1 << SS_CLOSE),
+		.families = FAMILY_MASK(AF_PACKET),
+	},
+	[NETLINK_DB] = {
+		.states   = (1 << SS_CLOSE),
+		.families = FAMILY_MASK(AF_NETLINK),
+	},
+	[SCTP_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_INET) | FAMILY_MASK(AF_INET6),
+	},
+	[VSOCK_ST_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_VSOCK),
+	},
+	[VSOCK_DG_DB] = {
+		.states   = SS_CONN,
+		.families = FAMILY_MASK(AF_VSOCK),
+	},
+	[TIPC_DB] = {
+		.states   = TIPC_SS_CONN,
+		.families = FAMILY_MASK(AF_TIPC),
+	},
+	[XDP_DB] = {
+		.states   = (1 << SS_CLOSE),
+		.families = FAMILY_MASK(AF_XDP),
+	},
+};
+
+static const struct filter default_afs[AF_MAX] = {
+	[AF_INET] = {
+		.dbs    = INET_DBM,
+		.states = SS_CONN,
+	},
+	[AF_INET6] = {
+		.dbs    = INET_DBM,
+		.states = SS_CONN,
+	},
+	[AF_UNIX] = {
+		.dbs    = UNIX_DBM,
+		.states = SS_CONN,
+	},
+	[AF_PACKET] = {
+		.dbs    = PACKET_DBM,
+		.states = (1 << SS_CLOSE),
+	},
+	[AF_NETLINK] = {
+		.dbs    = (1 << NETLINK_DB),
+		.states = (1 << SS_CLOSE),
+	},
+	[AF_VSOCK] = {
+		.dbs    = VSOCK_DBM,
+		.states = SS_CONN,
+	},
+	[AF_TIPC] = {
+		.dbs    = (1 << TIPC_DB),
+		.states = TIPC_SS_CONN,
+	},
+	[AF_XDP] = {
+		.dbs    = (1 << XDP_DB),
+		.states = (1 << SS_CLOSE),
+	},
+};
+
+static int do_default = 1;
+static struct filter current_filter;
+
+static void filter_db_set(struct filter *f, int db, bool enable)
+{
+	if (enable) {
+		f->states   |= default_dbs[db].states;
+		f->dbs	    |= 1 << db;
+	} else {
+		f->dbs &= ~(1 << db);
+	}
+	do_default   = 0;
+}
+
+static int filter_db_parse(struct filter *f, const char *s)
+{
+	const struct {
+		const char *name;
+		int dbs[MAX_DB + 1];
+	} db_name_tbl[] = {
+#define ENTRY(name, ...) { #name, { __VA_ARGS__, MAX_DB } }
+		ENTRY(all, UDP_DB, DCCP_DB, TCP_DB, MPTCP_DB, RAW_DB,
+			   UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB,
+			   PACKET_R_DB, PACKET_DG_DB, NETLINK_DB,
+			   SCTP_DB, VSOCK_ST_DB, VSOCK_DG_DB, XDP_DB),
+		ENTRY(inet, UDP_DB, DCCP_DB, TCP_DB, MPTCP_DB, SCTP_DB, RAW_DB),
+		ENTRY(udp, UDP_DB),
+		ENTRY(dccp, DCCP_DB),
+		ENTRY(tcp, TCP_DB),
+		ENTRY(mptcp, MPTCP_DB),
+		ENTRY(sctp, SCTP_DB),
+		ENTRY(raw, RAW_DB),
+		ENTRY(unix, UNIX_ST_DB, UNIX_DG_DB, UNIX_SQ_DB),
+		ENTRY(unix_stream, UNIX_ST_DB),
+		ENTRY(u_str, UNIX_ST_DB),	/* alias for unix_stream */
+		ENTRY(unix_dgram, UNIX_DG_DB),
+		ENTRY(u_dgr, UNIX_DG_DB),	/* alias for unix_dgram */
+		ENTRY(unix_seqpacket, UNIX_SQ_DB),
+		ENTRY(u_seq, UNIX_SQ_DB),	/* alias for unix_seqpacket */
+		ENTRY(packet, PACKET_R_DB, PACKET_DG_DB),
+		ENTRY(packet_raw, PACKET_R_DB),
+		ENTRY(p_raw, PACKET_R_DB),	/* alias for packet_raw */
+		ENTRY(packet_dgram, PACKET_DG_DB),
+		ENTRY(p_dgr, PACKET_DG_DB),	/* alias for packet_dgram */
+		ENTRY(netlink, NETLINK_DB),
+		ENTRY(tipc, TIPC_DB),
+		ENTRY(vsock, VSOCK_ST_DB, VSOCK_DG_DB),
+		ENTRY(vsock_stream, VSOCK_ST_DB),
+		ENTRY(v_str, VSOCK_ST_DB),	/* alias for vsock_stream */
+		ENTRY(vsock_dgram, VSOCK_DG_DB),
+		ENTRY(v_dgr, VSOCK_DG_DB),	/* alias for vsock_dgram */
+		ENTRY(xdp, XDP_DB),
+#undef ENTRY
+	};
+	bool enable = true;
+	unsigned int i;
+	const int *dbp;
+
+	if (s[0] == '!') {
+		enable = false;
+		s++;
+	}
+	for (i = 0; i < ARRAY_SIZE(db_name_tbl); i++) {
+		if (strcmp(s, db_name_tbl[i].name))
+			continue;
+		for (dbp = db_name_tbl[i].dbs; *dbp != MAX_DB; dbp++)
+			filter_db_set(f, *dbp, enable);
+		return 0;
+	}
+	return -1;
+}
+
+static void filter_af_set(struct filter *f, int af)
+{
+	f->states	   |= default_afs[af].states;
+	f->families	   |= FAMILY_MASK(af);
+	do_default	    = 0;
+	preferred_family    = af;
+}
+
+static int filter_af_get(struct filter *f, int af)
+{
+	return !!(f->families & FAMILY_MASK(af));
+}
+
+static void filter_states_set(struct filter *f, int states)
+{
+	if (states)
+		f->states = states;
+}
+
+static void filter_merge_defaults(struct filter *f)
+{
+	int db;
+	int af;
+
+	for (db = 0; db < MAX_DB; db++) {
+		if (!(f->dbs & (1 << db)))
+			continue;
+
+		if (!(default_dbs[db].families & f->families))
+			f->families |= default_dbs[db].families;
+	}
+	for (af = 0; af < AF_MAX; af++) {
+		if (!(f->families & FAMILY_MASK(af)))
+			continue;
+
+		if (!(default_afs[af].dbs & f->dbs))
+			f->dbs |= default_afs[af].dbs;
+	}
+}
+
+static FILE *generic_proc_open(const char *env, const char *name)
+{
+	const char *p = getenv(env);
+	char store[128];
+
+	if (!p) {
+		p = getenv("PROC_ROOT") ? : "/proc";
+		snprintf(store, sizeof(store)-1, "%s/%s", p, name);
+		p = store;
+	}
+
+	return fopen(p, "r");
+}
+#define net_tcp_open()		generic_proc_open("PROC_NET_TCP", "net/tcp")
+#define net_tcp6_open()		generic_proc_open("PROC_NET_TCP6", "net/tcp6")
+#define net_udp_open()		generic_proc_open("PROC_NET_UDP", "net/udp")
+#define net_udp6_open()		generic_proc_open("PROC_NET_UDP6", "net/udp6")
+#define net_raw_open()		generic_proc_open("PROC_NET_RAW", "net/raw")
+#define net_raw6_open()		generic_proc_open("PROC_NET_RAW6", "net/raw6")
+#define net_unix_open()		generic_proc_open("PROC_NET_UNIX", "net/unix")
+#define net_packet_open()	generic_proc_open("PROC_NET_PACKET", \
+							"net/packet")
+#define net_netlink_open()	generic_proc_open("PROC_NET_NETLINK", \
+							"net/netlink")
+#define net_sockstat_open()	generic_proc_open("PROC_NET_SOCKSTAT", \
+							"net/sockstat")
+#define net_sockstat6_open()	generic_proc_open("PROC_NET_SOCKSTAT6", \
+							"net/sockstat6")
+#define net_snmp_open()		generic_proc_open("PROC_NET_SNMP", "net/snmp")
+#define ephemeral_ports_open()	generic_proc_open("PROC_IP_LOCAL_PORT_RANGE", \
+					"sys/net/ipv4/ip_local_port_range")
+
+struct user_ent {
+	struct user_ent	*next;
+	unsigned int	ino;
+	int		pid;
+	int		tid;
+	int		fd;
+	char		*task;
+	char		*task_ctx;
+	char		*socket_ctx;
+};
+
+#define USER_ENT_HASH_SIZE	256
+static struct user_ent *user_ent_hash[USER_ENT_HASH_SIZE];
+
+static int user_ent_hashfn(unsigned int ino)
+{
+	int val = (ino >> 24) ^ (ino >> 16) ^ (ino >> 8) ^ ino;
+
+	return val & (USER_ENT_HASH_SIZE - 1);
+}
+
+static void user_ent_add(unsigned int ino, char *task,
+					int pid, int tid, int fd,
+					char *task_ctx,
+					char *sock_ctx)
+{
+	struct user_ent *p, **pp;
+
+	p = malloc(sizeof(struct user_ent));
+	if (!p) {
+		fprintf(stderr, "ss: failed to malloc buffer\n");
+		abort();
+	}
+	p->next = NULL;
+	p->ino = ino;
+	p->pid = pid;
+	p->tid = tid;
+	p->fd = fd;
+	p->task = strdup(task);
+	p->task_ctx = strdup(task_ctx);
+	p->socket_ctx = strdup(sock_ctx);
+
+	pp = &user_ent_hash[user_ent_hashfn(ino)];
+	p->next = *pp;
+	*pp = p;
+}
+
+#define MAX_PATH_LEN	1024
+
+static void user_ent_hash_build_task(char *path, int pid, int tid)
+{
+	const char *no_ctx = "unavailable";
+	char task[16] = {'\0', };
+	char stat[MAX_PATH_LEN];
+	int pos_id, pos_fd;
+	char *task_context;
+	struct dirent *d;
+	DIR *dir;
+
+	if (getpidcon(tid, &task_context) != 0)
+		task_context = strdup(no_ctx);
+
+	pos_id = strlen(path);	/* $PROC_ROOT/$ID/ */
+
+	snprintf(path + pos_id, MAX_PATH_LEN - pos_id, "fd/");
+	dir = opendir(path);
+	if (!dir) {
+		freecon(task_context);
+		return;
+	}
+
+	pos_fd = strlen(path);	/* $PROC_ROOT/$ID/fd/ */
+
+	while ((d = readdir(dir)) != NULL) {
+		const char *pattern = "socket:[";
+		char *sock_context;
+		unsigned int ino;
+		ssize_t link_len;
+		char lnk[64];
+		int fd;
+
+		if (sscanf(d->d_name, "%d%*c", &fd) != 1)
+			continue;
+
+		snprintf(path + pos_fd, MAX_PATH_LEN - pos_fd, "%d", fd);
+
+		link_len = readlink(path, lnk, sizeof(lnk) - 1);
+		if (link_len == -1)
+			continue;
+		lnk[link_len] = '\0';
+
+		if (strncmp(lnk, pattern, strlen(pattern)))
+			continue;
+
+		if (sscanf(lnk, "socket:[%u]", &ino) != 1)
+			continue;
+
+		if (getfilecon(path, &sock_context) <= 0)
+			sock_context = strdup(no_ctx);
+
+		if (task[0] == '\0') {
+			FILE *fp;
+
+			strlcpy(stat, path, pos_id + 1);
+			snprintf(stat + pos_id, sizeof(stat) - pos_id, "stat");
+
+			fp = fopen(stat, "r");
+			if (fp) {
+				if (fscanf(fp, "%*d (%[^)])", task) < 1) {
+					; /* ignore */
+				}
+				fclose(fp);
+			}
+		}
+
+		user_ent_add(ino, task, pid, tid, fd, task_context, sock_context);
+		freecon(sock_context);
+	}
+
+	freecon(task_context);
+	closedir(dir);
+}
+
+static void user_ent_destroy(void)
+{
+	struct user_ent *p, *p_next;
+	int cnt = 0;
+
+	while (cnt != USER_ENT_HASH_SIZE) {
+		p = user_ent_hash[cnt];
+		while (p) {
+			free(p->task);
+			free(p->task_ctx);
+			free(p->socket_ctx);
+			p_next = p->next;
+			free(p);
+			p = p_next;
+		}
+		cnt++;
+	}
+}
+
+static void user_ent_hash_build(void)
+{
+	const char *root = getenv("PROC_ROOT") ? : "/proc/";
+	char name[MAX_PATH_LEN];
+	struct dirent *d;
+	int nameoff;
+	DIR *dir;
+
+	strlcpy(name, root, sizeof(name));
+
+	if (strlen(name) == 0 || name[strlen(name) - 1] != '/')
+		strcat(name, "/");
+
+	nameoff = strlen(name);
+
+	dir = opendir(name);
+	if (!dir)
+		return;
+
+	while ((d = readdir(dir)) != NULL) {
+		int pid;
+
+		if (sscanf(d->d_name, "%d%*c", &pid) != 1)
+			continue;
+
+		snprintf(name + nameoff, sizeof(name) - nameoff, "%d/", pid);
+		user_ent_hash_build_task(name, pid, pid);
+
+		if (show_threads) {
+			struct dirent *task_d;
+			DIR *task_dir;
+
+			snprintf(name + nameoff, sizeof(name) - nameoff, "%d/task/", pid);
+
+			task_dir = opendir(name);
+			if (!task_dir)
+				continue;
+
+			while ((task_d = readdir(task_dir)) != NULL) {
+				int tid;
+
+				if (sscanf(task_d->d_name, "%d%*c", &tid) != 1)
+					continue;
+				if (tid == pid)
+					continue;
+
+				snprintf(name + nameoff, sizeof(name) - nameoff, "%d/", tid);
+				user_ent_hash_build_task(name, pid, tid);
+			}
+			closedir(task_dir);
+		}
+	}
+	closedir(dir);
+}
+
+enum entry_types {
+	USERS,
+	PROC_CTX,
+	PROC_SOCK_CTX
+};
+
+#define ENTRY_BUF_SIZE 512
+static int find_entry(unsigned int ino, char **buf, int type)
+{
+	struct user_ent *p;
+	int cnt = 0;
+	char *ptr;
+	char thread_info[16] = {'\0', };
+	char *new_buf;
+	int len, new_buf_len;
+	int buf_used = 0;
+	int buf_len = 0;
+
+	if (!ino)
+		return 0;
+
+	p = user_ent_hash[user_ent_hashfn(ino)];
+	ptr = *buf = NULL;
+	while (p) {
+		if (p->ino != ino)
+			goto next;
+
+		while (1) {
+			ptr = *buf + buf_used;
+
+			if (show_threads)
+				snprintf(thread_info, sizeof(thread_info), "tid=%d,", p->tid);
+
+			switch (type) {
+			case USERS:
+				len = snprintf(ptr, buf_len - buf_used,
+					"(\"%s\",pid=%d,%sfd=%d),",
+					p->task, p->pid, thread_info, p->fd);
+				break;
+			case PROC_CTX:
+				len = snprintf(ptr, buf_len - buf_used,
+					"(\"%s\",pid=%d,%sproc_ctx=%s,fd=%d),",
+					p->task, p->pid, thread_info,
+					p->task_ctx, p->fd);
+				break;
+			case PROC_SOCK_CTX:
+				len = snprintf(ptr, buf_len - buf_used,
+					"(\"%s\",pid=%d,%sproc_ctx=%s,fd=%d,sock_ctx=%s),",
+					p->task, p->pid, thread_info,
+					p->task_ctx, p->fd,
+					p->socket_ctx);
+				break;
+			default:
+				fprintf(stderr, "ss: invalid type: %d\n", type);
+				abort();
+			}
+
+			if (len < 0 || len >= buf_len - buf_used) {
+				new_buf_len = buf_len + ENTRY_BUF_SIZE;
+				new_buf = realloc(*buf, new_buf_len);
+				if (!new_buf) {
+					fprintf(stderr, "ss: failed to malloc buffer\n");
+					abort();
+				}
+				*buf = new_buf;
+				buf_len = new_buf_len;
+				continue;
+			} else {
+				buf_used += len;
+				break;
+			}
+		}
+		cnt++;
+next:
+		p = p->next;
+	}
+	if (buf_used) {
+		ptr = *buf + buf_used;
+		ptr[-1] = '\0';
+	}
+	return cnt;
+}
+
+static unsigned long long cookie_sk_get(const uint32_t *cookie)
+{
+	return (((unsigned long long)cookie[1] << 31) << 1) | cookie[0];
+}
+
+static const char *sctp_sstate_name[] = {
+	[SCTP_STATE_CLOSED] = "CLOSED",
+	[SCTP_STATE_COOKIE_WAIT] = "COOKIE_WAIT",
+	[SCTP_STATE_COOKIE_ECHOED] = "COOKIE_ECHOED",
+	[SCTP_STATE_ESTABLISHED] = "ESTAB",
+	[SCTP_STATE_SHUTDOWN_PENDING] = "SHUTDOWN_PENDING",
+	[SCTP_STATE_SHUTDOWN_SENT] = "SHUTDOWN_SENT",
+	[SCTP_STATE_SHUTDOWN_RECEIVED] = "SHUTDOWN_RECEIVED",
+	[SCTP_STATE_SHUTDOWN_ACK_SENT] = "ACK_SENT",
+};
+
+static const char * const stype_nameg[] = {
+	"UNKNOWN",
+	[SOCK_STREAM] = "STREAM",
+	[SOCK_DGRAM] = "DGRAM",
+	[SOCK_RDM] = "RDM",
+	[SOCK_SEQPACKET] = "SEQPACKET",
+};
+
+struct sockstat {
+	struct sockstat	   *next;
+	unsigned int	    type;
+	uint16_t	    prot;
+	uint16_t	    raw_prot;
+	inet_prefix	    local;
+	inet_prefix	    remote;
+	int		    lport;
+	int		    rport;
+	int		    state;
+	int		    rq, wq;
+	unsigned int ino;
+	unsigned int uid;
+	int		    refcnt;
+	unsigned int	    iface;
+	unsigned long long  sk;
+	char *name;
+	char *peer_name;
+	__u32		    mark;
+	__u64		    cgroup_id;
+};
+
+struct dctcpstat {
+	unsigned int	ce_state;
+	unsigned int	alpha;
+	unsigned int	ab_ecn;
+	unsigned int	ab_tot;
+	bool		enabled;
+};
+
+struct tcpstat {
+	struct sockstat	    ss;
+	unsigned int	    timer;
+	unsigned int	    timeout;
+	int		    probes;
+	char		    cong_alg[16];
+	double		    rto, ato, rtt, rttvar;
+	int		    qack, ssthresh, backoff;
+	double		    send_bps;
+	int		    snd_wscale;
+	int		    rcv_wscale;
+	int		    mss;
+	int		    rcv_mss;
+	int		    advmss;
+	unsigned int	    pmtu;
+	unsigned int	    cwnd;
+	unsigned int	    lastsnd;
+	unsigned int	    lastrcv;
+	unsigned int	    lastack;
+	double		    pacing_rate;
+	double		    pacing_rate_max;
+	double		    delivery_rate;
+	unsigned long long  bytes_acked;
+	unsigned long long  bytes_received;
+	unsigned int	    segs_out;
+	unsigned int	    segs_in;
+	unsigned int	    data_segs_out;
+	unsigned int	    data_segs_in;
+	unsigned int	    unacked;
+	unsigned int	    retrans;
+	unsigned int	    retrans_total;
+	unsigned int	    lost;
+	unsigned int	    sacked;
+	unsigned int	    fackets;
+	unsigned int	    reordering;
+	unsigned int	    not_sent;
+	unsigned int	    delivered;
+	unsigned int	    delivered_ce;
+	unsigned int	    dsack_dups;
+	unsigned int	    reord_seen;
+	double		    rcv_rtt;
+	double		    min_rtt;
+	unsigned int 	    rcv_ooopack;
+	unsigned int	    snd_wnd;
+	unsigned int	    rcv_wnd;
+	unsigned int	    rehash;
+	int		    rcv_space;
+	unsigned int        rcv_ssthresh;
+	unsigned long long  busy_time;
+	unsigned long long  rwnd_limited;
+	unsigned long long  sndbuf_limited;
+	unsigned long long  bytes_sent;
+	unsigned long long  bytes_retrans;
+	bool		    has_ts_opt;
+	bool		    has_usec_ts_opt;
+	bool		    has_sack_opt;
+	bool		    has_ecn_opt;
+	bool		    has_ecnseen_opt;
+	bool		    has_fastopen_opt;
+	bool		    has_wscale_opt;
+	bool		    app_limited;
+	struct dctcpstat    *dctcp;
+	struct tcp_bbr_info *bbr_info;
+};
+
+/* SCTP assocs share the same inode number with their parent endpoint. So if we
+ * have seen the inode number before, it must be an assoc instead of the next
+ * endpoint. */
+static bool is_sctp_assoc(struct sockstat *s, const char *sock_name)
+{
+	if (strcmp(sock_name, "sctp"))
+		return false;
+	if (!sctp_ino || sctp_ino != s->ino)
+		return false;
+	return true;
+}
+
+static const char *unix_netid_name(int type)
+{
+	switch (type) {
+	case SOCK_STREAM:
+		return "u_str";
+	case SOCK_SEQPACKET:
+		return "u_seq";
+	case SOCK_DGRAM:
+	default:
+		return "u_dgr";
+	}
+}
+
+static const char *proto_name(int protocol)
+{
+	switch (protocol) {
+	case 0:
+		return "raw";
+	case IPPROTO_UDP:
+		return "udp";
+	case IPPROTO_TCP:
+		return "tcp";
+	case IPPROTO_MPTCP:
+		return "mptcp";
+	case IPPROTO_SCTP:
+		return "sctp";
+	case IPPROTO_DCCP:
+		return "dccp";
+	case IPPROTO_ICMPV6:
+		return "icmp6";
+	}
+
+	return "???";
+}
+
+static const char *vsock_netid_name(int type)
+{
+	switch (type) {
+	case SOCK_STREAM:
+		return "v_str";
+	case SOCK_DGRAM:
+		return "v_dgr";
+	default:
+		return "???";
+	}
+}
+
+static const char *tipc_netid_name(int type)
+{
+	switch (type) {
+	case SOCK_STREAM:
+		return "ti_st";
+	case SOCK_DGRAM:
+		return "ti_dg";
+	case SOCK_RDM:
+		return "ti_rd";
+	case SOCK_SEQPACKET:
+		return "ti_sq";
+	default:
+		return "???";
+	}
+}
+
+/* Allocate and initialize a new buffer chunk */
+static struct buf_chunk *buf_chunk_new(void)
+{
+	struct buf_chunk *new = malloc(BUF_CHUNK);
+
+	if (!new)
+		abort();
+
+	new->next = NULL;
+
+	/* This is also the last block */
+	buffer.tail = new;
+
+	/* Next token will be stored at the beginning of chunk data area, and
+	 * its initial length is zero.
+	 */
+	buffer.cur = (struct buf_token *)new->data;
+	buffer.cur->len = 0;
+
+	new->end = buffer.cur->data;
+
+	buffer.chunks++;
+
+	return new;
+}
+
+/* Return available tail room in given chunk */
+static int buf_chunk_avail(struct buf_chunk *chunk)
+{
+	return BUF_CHUNK - offsetof(struct buf_chunk, data) -
+	       (chunk->end - chunk->data);
+}
+
+/* Update end pointer and token length, link new chunk if we hit the end of the
+ * current one. Return -EAGAIN if we got a new chunk, caller has to print again.
+ */
+static int buf_update(int len)
+{
+	struct buf_chunk *chunk = buffer.tail;
+	struct buf_token *t = buffer.cur;
+
+	/* Claim success if new content fits in the current chunk, and anyway
+	 * if this is the first token in the chunk: in the latter case,
+	 * allocating a new chunk won't help, so we'll just cut the output.
+	 */
+	if ((len < buf_chunk_avail(chunk) && len != -1 /* glibc < 2.0.6 */) ||
+	    t == (struct buf_token *)chunk->data) {
+		len = min(len, buf_chunk_avail(chunk));
+
+		/* Total field length can't exceed 2^16 bytes, cut as needed */
+		len = min(len, USHRT_MAX - t->len);
+
+		chunk->end += len;
+		t->len += len;
+		return 0;
+	}
+
+	/* Content truncated, time to allocate more */
+	chunk->next = buf_chunk_new();
+
+	/* Copy current token over to new chunk, including length descriptor */
+	memcpy(chunk->next->data, t, sizeof(t->len) + t->len);
+	chunk->next->end += t->len;
+
+	/* Discard partially written field in old chunk */
+	chunk->end -= t->len + sizeof(t->len);
+
+	return -EAGAIN;
+}
+
+/* Append content to buffer as part of the current field */
+__attribute__((format(printf, 1, 2)))
+static void out(const char *fmt, ...)
+{
+	struct column *f = current_field;
+	va_list args;
+	char *pos;
+	int len;
+
+	if (f->disabled)
+		return;
+
+	if (!buffer.head)
+		buffer.head = buf_chunk_new();
+
+again:	/* Append to buffer: if we have a new chunk, print again */
+
+	pos = buffer.cur->data + buffer.cur->len;
+	va_start(args, fmt);
+
+	/* Limit to tail room. If we hit the limit, buf_update() will tell us */
+	len = vsnprintf(pos, buf_chunk_avail(buffer.tail), fmt, args);
+	va_end(args);
+
+	if (buf_update(len))
+		goto again;
+}
+
+static int print_left_spacing(struct column *f, int stored, int printed)
+{
+	int s;
+
+	if (!f->width || f->align == ALIGN_LEFT)
+		return 0;
+
+	s = f->width - stored - printed;
+	if (f->align == ALIGN_CENTER)
+		/* If count of total spacing is odd, shift right by one */
+		s = (s + 1) / 2;
+
+	if (s > 0)
+		return printf("%*c", s, ' ');
+
+	return 0;
+}
+
+static void print_right_spacing(struct column *f, int printed)
+{
+	int s;
+
+	if (!f->width || f->align == ALIGN_RIGHT)
+		return;
+
+	s = f->width - printed;
+	if (f->align == ALIGN_CENTER)
+		s /= 2;
+
+	if (s > 0)
+		printf("%*c", s, ' ');
+}
+
+/* Done with field: update buffer pointer, start new token after current one */
+static void field_flush(struct column *f)
+{
+	struct buf_chunk *chunk;
+	unsigned int pad;
+
+	if (f->disabled)
+		return;
+
+	chunk = buffer.tail;
+	pad = buffer.cur->len % 2;
+
+	if (buffer.cur->len > f->max_len)
+		f->max_len = buffer.cur->len;
+
+	/* We need a new chunk if we can't store the next length descriptor.
+	 * Mind the gap between end of previous token and next aligned position
+	 * for length descriptor.
+	 */
+	if (buf_chunk_avail(chunk) - pad < sizeof(buffer.cur->len)) {
+		chunk->end += pad;
+		chunk->next = buf_chunk_new();
+		return;
+	}
+
+	buffer.cur = (struct buf_token *)(buffer.cur->data +
+					  LEN_ALIGN(buffer.cur->len));
+	buffer.cur->len = 0;
+	buffer.tail->end = buffer.cur->data;
+}
+
+static int field_is_last(struct column *f)
+{
+	return f - columns == COL_MAX - 1;
+}
+
+/* Get the next available token in the buffer starting from the current token */
+static struct buf_token *buf_token_next(struct buf_token *cur)
+{
+	struct buf_chunk *chunk = buffer.tail;
+
+	/* If we reached the end of chunk contents, get token from next chunk */
+	if (cur->data + LEN_ALIGN(cur->len) == chunk->end) {
+		buffer.tail = chunk = chunk->next;
+		return chunk ? (struct buf_token *)chunk->data : NULL;
+	}
+
+	return (struct buf_token *)(cur->data + LEN_ALIGN(cur->len));
+}
+
+/* Free up all allocated buffer chunks */
+static void buf_free_all(void)
+{
+	struct buf_chunk *tmp;
+
+	for (buffer.tail = buffer.head; buffer.tail; ) {
+		tmp = buffer.tail;
+		buffer.tail = buffer.tail->next;
+		free(tmp);
+	}
+	buffer.head = NULL;
+	buffer.chunks = 0;
+}
+
+/* Get current screen width, returns -1 if TIOCGWINSZ fails */
+static int render_screen_width(void)
+{
+	int width = -1;
+
+	if (isatty(STDOUT_FILENO)) {
+		struct winsize w;
+
+		if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
+			if (w.ws_col > 0)
+				width = w.ws_col;
+		}
+	}
+
+	return width;
+}
+
+/* Calculate column width from contents length. If columns don't fit on one
+ * line, break them into the least possible amount of lines and keep them
+ * aligned across lines. Available screen space is equally spread between fields
+ * as additional spacing.
+ */
+static void render_calc_width(void)
+{
+	int screen_width, first, len = 0, linecols = 0;
+	struct column *c, *eol = columns - 1;
+	bool compact_output = false;
+
+	screen_width = render_screen_width();
+	if (screen_width == -1) {
+		screen_width = INT_MAX;
+		compact_output = true;
+	}
+
+	/* First pass: set width for each column to measured content length */
+	for (first = 1, c = columns; c - columns < COL_MAX; c++) {
+		if (c->disabled)
+			continue;
+
+		if (!first && c->max_len)
+			c->width = c->max_len + strlen(c->ldelim);
+		else
+			c->width = c->max_len;
+
+		/* But don't exceed screen size. If we exceed the screen size
+		 * for even a single field, it will just start on a line of its
+		 * own and then naturally wrap.
+		 */
+		c->width = min(c->width, screen_width);
+
+		if (c->width)
+			first = 0;
+	}
+
+	if (compact_output) {
+		/* Compact output, skip extending columns. */
+		return;
+	}
+
+	/* Second pass: find out newlines and distribute available spacing */
+	for (c = columns; c - columns < COL_MAX; c++) {
+		int pad, spacing, rem, last;
+		struct column *tmp;
+
+		if (!c->width)
+			continue;
+
+		linecols++;
+		len += c->width;
+
+		for (last = 1, tmp = c + 1; tmp - columns < COL_MAX; tmp++) {
+			if (tmp->width) {
+				last = 0;
+				break;
+			}
+		}
+
+		if (!last && len < screen_width) {
+			/* Columns fit on screen so far, nothing to do yet */
+			continue;
+		}
+
+		if (len == screen_width) {
+			/* Exact fit, just start with new line */
+			goto newline;
+		}
+
+		if (len > screen_width) {
+			/* Screen width exceeded: go back one column */
+			len -= c->width;
+			c--;
+			linecols--;
+		}
+
+		/* Distribute remaining space to columns on this line */
+		pad = screen_width - len;
+		spacing = pad / linecols;
+		rem = pad % linecols;
+		for (tmp = c; tmp > eol; tmp--) {
+			if (!tmp->width)
+				continue;
+
+			tmp->width += spacing;
+			if (rem) {
+				tmp->width++;
+				rem--;
+			}
+		}
+
+newline:
+		/* Line break: reset line counters, mark end-of-line */
+		eol = c;
+		len = 0;
+		linecols = 0;
+	}
+}
+
+/* Render buffered output with spacing and delimiters, then free up buffers */
+static void render(void)
+{
+	struct buf_token *token;
+	int printed, line_started = 0;
+	struct column *f;
+
+	if (!buffer.head)
+		return;
+
+	token = (struct buf_token *)buffer.head->data;
+
+	/* Ensure end alignment of last token, it wasn't necessarily flushed */
+	buffer.tail->end += buffer.cur->len % 2;
+
+	render_calc_width();
+
+	/* Rewind and replay */
+	buffer.tail = buffer.head;
+
+	f = columns;
+	while (!f->width)
+		f++;
+
+	while (token) {
+		/* Print left delimiter only if we already started a line */
+		if (line_started++)
+			printed = printf("%s", f->ldelim);
+		else
+			printed = 0;
+
+		/* Print field content from token data with spacing */
+		printed += print_left_spacing(f, token->len, printed);
+		printed += fwrite(token->data, 1, token->len, stdout);
+		print_right_spacing(f, printed);
+
+		/* Go to next non-empty field, deal with end-of-line */
+		do {
+			if (field_is_last(f)) {
+				printf("\n");
+				f = columns;
+				line_started = 0;
+			} else {
+				f++;
+			}
+		} while (f->disabled);
+
+		token = buf_token_next(token);
+	}
+	/* Deal with final end-of-line when the last non-empty field printed
+	 * is not the last field.
+	 */
+	if (line_started)
+		printf("\n");
+
+	buf_free_all();
+	current_field = columns;
+}
+
+/* Move to next field, and render buffer if we reached the maximum number of
+ * chunks, at the last field in a line.
+ */
+static void field_next(void)
+{
+	if (field_is_last(current_field) && buffer.chunks >= BUF_CHUNKS_MAX) {
+		render();
+		return;
+	}
+
+	field_flush(current_field);
+	if (field_is_last(current_field))
+		current_field = columns;
+	else
+		current_field++;
+}
+
+/* Walk through fields and flush them until we reach the desired one */
+static void field_set(enum col_id id)
+{
+	while (id != current_field - columns)
+		field_next();
+}
+
+/* Print header for all non-empty columns */
+static void print_header(void)
+{
+	while (!field_is_last(current_field)) {
+		if (!current_field->disabled)
+			out("%s", current_field->header);
+		field_next();
+	}
+}
+
+static void sock_state_print(struct sockstat *s)
+{
+	const char *sock_name;
+	static const char * const sstate_name[] = {
+		"UNKNOWN",
+		[SS_ESTABLISHED] = "ESTAB",
+		[SS_SYN_SENT] = "SYN-SENT",
+		[SS_SYN_RECV] = "SYN-RECV",
+		[SS_FIN_WAIT1] = "FIN-WAIT-1",
+		[SS_FIN_WAIT2] = "FIN-WAIT-2",
+		[SS_TIME_WAIT] = "TIME-WAIT",
+		[SS_CLOSE] = "UNCONN",
+		[SS_CLOSE_WAIT] = "CLOSE-WAIT",
+		[SS_LAST_ACK] = "LAST-ACK",
+		[SS_LISTEN] =	"LISTEN",
+		[SS_CLOSING] = "CLOSING",
+		[SS_NEW_SYN_RECV] = "UNDEF", /* Never returned by kernel */
+		[SS_BOUND_INACTIVE] = "UNDEF", /* Never returned by kernel */
+	};
+
+	switch (s->local.family) {
+	case AF_UNIX:
+		sock_name = unix_netid_name(s->type);
+		break;
+	case AF_INET:
+	case AF_INET6:
+		sock_name = proto_name(s->type);
+		break;
+	case AF_PACKET:
+		sock_name = s->type == SOCK_RAW ? "p_raw" : "p_dgr";
+		break;
+	case AF_NETLINK:
+		sock_name = "nl";
+		break;
+	case AF_TIPC:
+		sock_name = tipc_netid_name(s->type);
+		break;
+	case AF_VSOCK:
+		sock_name = vsock_netid_name(s->type);
+		break;
+	case AF_XDP:
+		sock_name = "xdp";
+		break;
+	default:
+		sock_name = "unknown";
+	}
+
+	if (is_sctp_assoc(s, sock_name)) {
+		field_set(COL_STATE);		/* Empty Netid field */
+		out("`- %s", sctp_sstate_name[s->state]);
+	} else {
+		field_set(COL_NETID);
+		out("%s", sock_name);
+		field_set(COL_STATE);
+		out("%s", sstate_name[s->state]);
+	}
+
+	field_set(COL_RECVQ);
+	out("%-6d", s->rq);
+	field_set(COL_SENDQ);
+	out("%-6d", s->wq);
+	field_set(COL_ADDR);
+}
+
+static void sock_details_print(struct sockstat *s)
+{
+	if (s->uid)
+		out(" uid:%u", s->uid);
+
+	out(" ino:%u", s->ino);
+	out(" sk:%llx", s->sk);
+
+	if (s->mark)
+		out(" fwmark:0x%x", s->mark);
+
+	if (s->cgroup_id)
+		out(" cgroup:%s", cg_id_to_path(s->cgroup_id));
+}
+
+static void sock_addr_print(const char *addr, char *delim, const char *port,
+		const char *ifname)
+{
+	if (ifname)
+		out("%s" "%%" "%s%s", addr, ifname, delim);
+	else
+		out("%s%s", addr, delim);
+
+	field_next();
+	out("%s", port);
+	field_next();
+}
+
+static const char *print_ms_timer(unsigned int timeout)
+{
+	static char buf[64];
+	int secs, msecs, minutes;
+
+	secs = timeout/1000;
+	minutes = secs/60;
+	secs = secs%60;
+	msecs = timeout%1000;
+	buf[0] = 0;
+	if (minutes) {
+		msecs = 0;
+		snprintf(buf, sizeof(buf)-16, "%dmin", minutes);
+		if (minutes > 9)
+			secs = 0;
+	}
+	if (secs) {
+		if (secs > 9)
+			msecs = 0;
+		sprintf(buf+strlen(buf), "%d%s", secs, msecs ? "." : "sec");
+	}
+	if (msecs)
+		sprintf(buf+strlen(buf), "%03dms", msecs);
+	return buf;
+}
+
+struct scache {
+	struct scache *next;
+	int port;
+	char *name;
+	const char *proto;
+};
+
+static struct scache *rlist;
+
+#ifdef HAVE_RPC
+static CLIENT *rpc_client_create(rpcprog_t prog, rpcvers_t vers)
+{
+	struct netbuf nbuf;
+	struct sockaddr_un saddr;
+	int sock;
+
+	memset(&saddr, 0, sizeof(saddr));
+	sock = socket(AF_LOCAL, SOCK_STREAM, 0);
+	if (sock < 0)
+		return NULL;
+
+	saddr.sun_family = AF_LOCAL;
+	strcpy(saddr.sun_path, _PATH_RPCBINDSOCK);
+	nbuf.len = SUN_LEN(&saddr);
+	nbuf.maxlen = sizeof(struct sockaddr_un);
+	nbuf.buf = &saddr;
+
+	return clnt_vc_create(sock, &nbuf, prog, vers, 0, 0);
+}
+
+static void init_service_resolver(void)
+{
+	struct rpcblist *rhead = NULL;
+	struct timeval timeout;
+	struct rpcent *rpc;
+	enum clnt_stat res;
+	CLIENT *client;
+
+	timeout.tv_sec = 5;
+	timeout.tv_usec = 0;
+
+	client = rpc_client_create(PMAPPROG, RPCBVERS4);
+	if (!client)
+		return;
+
+	res = clnt_call(client, RPCBPROC_DUMP, (xdrproc_t)xdr_void, NULL,
+			(xdrproc_t)xdr_rpcblist_ptr, (char *)&rhead,
+			timeout);
+	if (res != RPC_SUCCESS)
+		return;
+
+	for (; rhead; rhead = rhead->rpcb_next) {
+		char prog[128] = "rpc.";
+		struct scache *c;
+		int hport, lport, ok;
+
+		c = malloc(sizeof(*c));
+		if (!c)
+			continue;
+
+		ok = sscanf(rhead->rpcb_map.r_addr, "::.%d.%d", &hport, &lport);
+		if (!ok)
+			ok = sscanf(rhead->rpcb_map.r_addr, "0.0.0.0.%d.%d",
+				    &hport, &lport);
+		if (!ok)
+			continue;
+		c->port = hport << 8 | lport;
+
+		if (strcmp(rhead->rpcb_map.r_netid, TCP_PROTO) == 0 ||
+		    strcmp(rhead->rpcb_map.r_netid, TCP6_PROTO) == 0)
+			c->proto = TCP_PROTO;
+		else if (strcmp(rhead->rpcb_map.r_netid, UDP_PROTO) == 0 ||
+			 strcmp(rhead->rpcb_map.r_netid, UDP6_PROTO) == 0)
+			c->proto = UDP_PROTO;
+		else if (strcmp(rhead->rpcb_map.r_netid, SCTP_PROTO) == 0)
+			c->proto = SCTP_PROTO;
+		else
+			continue;
+
+		rpc = getrpcbynumber(rhead->rpcb_map.r_prog);
+		if (rpc) {
+			strncat(prog, rpc->r_name, 128 - strlen(prog));
+			c->name = strdup(prog);
+		}
+
+		c->next = rlist;
+		rlist = c;
+	}
+}
+#endif
+
+/* Even do not try default linux ephemeral port ranges:
+ * default /etc/services contains so much of useless crap
+ * wouldbe "allocated" to this area that resolution
+ * is really harmful. I shrug each time when seeing
+ * "socks" or "cfinger" in dumps.
+ */
+static int is_ephemeral(int port)
+{
+	static int min = 0, max;
+
+	if (!min) {
+		FILE *f = ephemeral_ports_open();
+
+		if (!f || fscanf(f, "%d %d", &min, &max) < 2) {
+			min = 1024;
+			max = 4999;
+		}
+		if (f)
+			fclose(f);
+	}
+	return port >= min && port <= max;
+}
+
+
+static const char *__resolve_service(int port)
+{
+	struct scache *c;
+
+	for (c = rlist; c; c = c->next) {
+		if (c->port == port && c->proto == dg_proto)
+			return c->name;
+	}
+
+	if (!is_ephemeral(port)) {
+		static int notfirst;
+		struct servent *se;
+
+		if (!notfirst) {
+			setservent(1);
+			notfirst = 1;
+		}
+		se = getservbyport(htons(port), dg_proto);
+		if (se)
+			return se->s_name;
+	}
+
+	return NULL;
+}
+
+#define SCACHE_BUCKETS 1024
+static struct scache *cache_htab[SCACHE_BUCKETS];
+
+static const char *resolve_service(int port)
+{
+	static char buf[128];
+	struct scache *c;
+	const char *res;
+	int hash;
+
+	if (port == 0) {
+		buf[0] = '*';
+		buf[1] = 0;
+		return buf;
+	}
+
+	if (numeric)
+		goto do_numeric;
+
+	if (dg_proto == RAW_PROTO)
+		return inet_proto_n2a(port, buf, sizeof(buf));
+
+
+	hash = (port^(((unsigned long)dg_proto)>>2)) % SCACHE_BUCKETS;
+
+	for (c = cache_htab[hash]; c; c = c->next) {
+		if (c->port == port && c->proto == dg_proto)
+			goto do_cache;
+	}
+
+	c = malloc(sizeof(*c));
+	if (!c)
+		goto do_numeric;
+	res = __resolve_service(port);
+	c->port = port;
+	c->name = res ? strdup(res) : NULL;
+	c->proto = dg_proto;
+	c->next = cache_htab[hash];
+	cache_htab[hash] = c;
+
+do_cache:
+	if (c->name)
+		return c->name;
+
+do_numeric:
+	sprintf(buf, "%u", port);
+	return buf;
+}
+
+static void inet_addr_print(const inet_prefix *a, int port,
+			    unsigned int ifindex, bool v6only)
+{
+	char buf[1024];
+	const char *ap = buf;
+	const char *ifname = NULL;
+
+	if (a->family == AF_INET) {
+		ap = format_host(AF_INET, 4, a->data);
+	} else {
+		if (!v6only &&
+		    !memcmp(a->data, &in6addr_any, sizeof(in6addr_any))) {
+			buf[0] = '*';
+			buf[1] = 0;
+		} else {
+			ap = format_host(a->family, 16, a->data);
+
+			/* Numeric IPv6 addresses should be bracketed */
+			if (strchr(ap, ':')) {
+				snprintf(buf, sizeof(buf),
+					 "[%s]", ap);
+				ap = buf;
+			}
+		}
+	}
+
+	if (ifindex)
+		ifname = ll_index_to_name(ifindex);
+
+	sock_addr_print(ap, ":", resolve_service(port), ifname);
+}
+
+struct aafilter {
+	inet_prefix	addr;
+	long		port;
+	unsigned int	iface;
+	__u32		mark;
+	__u32		mask;
+	__u64		cgroup_id;
+	struct aafilter *next;
+};
+
+static int inet2_addr_match(const inet_prefix *a, const inet_prefix *p,
+			    int plen)
+{
+	if (!inet_addr_match(a, p, plen))
+		return 0;
+
+	/* Cursed "v4 mapped" addresses: v4 mapped socket matches
+	 * pure IPv4 rule, but v4-mapped rule selects only v4-mapped
+	 * sockets. Fair? */
+	if (p->family == AF_INET && a->family == AF_INET6) {
+		if (a->data[0] == 0 && a->data[1] == 0 &&
+		    a->data[2] == htonl(0xffff)) {
+			inet_prefix tmp = *a;
+
+			tmp.data[0] = a->data[3];
+			return inet_addr_match(&tmp, p, plen);
+		}
+	}
+	return 1;
+}
+
+static int unix_match(const inet_prefix *a, const inet_prefix *p)
+{
+	char *addr, *pattern;
+
+	memcpy(&addr, a->data, sizeof(addr));
+	memcpy(&pattern, p->data, sizeof(pattern));
+	if (pattern == NULL)
+		return 1;
+	if (addr == NULL)
+		addr = "";
+	return !fnmatch(pattern, addr, FNM_CASEFOLD);
+}
+
+static int run_ssfilter(struct ssfilter *f, struct sockstat *s)
+{
+	switch (f->type) {
+		case SSF_S_AUTO:
+	{
+		if (s->local.family == AF_UNIX) {
+			char *p;
+
+			memcpy(&p, s->local.data, sizeof(p));
+			return p == NULL || (p[0] == '@' && strlen(p) == 6 &&
+					     strspn(p+1, "0123456789abcdef") == 5);
+		}
+		if (s->local.family == AF_PACKET)
+			return s->lport == 0 && s->local.data[0] == 0;
+		if (s->local.family == AF_NETLINK)
+			return s->lport < 0;
+		if (s->local.family == AF_VSOCK)
+			return s->lport > 1023;
+
+		return is_ephemeral(s->lport);
+	}
+		case SSF_DCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		if (a->addr.family == AF_UNIX)
+			return unix_match(&s->remote, &a->addr);
+		if (a->port != -1 && a->port != s->rport)
+			return 0;
+		if (a->addr.bitlen) {
+			do {
+				if (!inet2_addr_match(&s->remote, &a->addr, a->addr.bitlen))
+					return 1;
+			} while ((a = a->next) != NULL);
+			return 0;
+		}
+		return 1;
+	}
+		case SSF_SCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		if (a->addr.family == AF_UNIX)
+			return unix_match(&s->local, &a->addr);
+		if (a->port != -1 && a->port != s->lport)
+			return 0;
+		if (a->addr.bitlen) {
+			do {
+				if (!inet2_addr_match(&s->local, &a->addr, a->addr.bitlen))
+					return 1;
+			} while ((a = a->next) != NULL);
+			return 0;
+		}
+		return 1;
+	}
+		case SSF_D_GE:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->rport >= a->port;
+	}
+		case SSF_D_LE:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->rport <= a->port;
+	}
+		case SSF_S_GE:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->lport >= a->port;
+	}
+		case SSF_S_LE:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->lport <= a->port;
+	}
+		case SSF_DEVCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->iface == a->iface;
+	}
+		case SSF_MARKMASK:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return (s->mark & a->mask) == a->mark;
+	}
+		case SSF_CGROUPCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+
+		return s->cgroup_id == a->cgroup_id;
+	}
+		/* Yup. It is recursion. Sorry. */
+		case SSF_AND:
+		return run_ssfilter(f->pred, s) && run_ssfilter(f->post, s);
+		case SSF_OR:
+		return run_ssfilter(f->pred, s) || run_ssfilter(f->post, s);
+		case SSF_NOT:
+		return !run_ssfilter(f->pred, s);
+		default:
+		abort();
+	}
+}
+
+/* Relocate external jumps by reloc. */
+static void ssfilter_patch(char *a, int len, int reloc)
+{
+	while (len > 0) {
+		struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)a;
+
+		if (op->no == len+4)
+			op->no += reloc;
+		len -= op->yes;
+		a += op->yes;
+	}
+	if (len < 0)
+		abort();
+}
+
+static int ssfilter_bytecompile(struct ssfilter *f, char **bytecode)
+{
+	switch (f->type) {
+		case SSF_S_AUTO:
+	{
+		if (!(*bytecode = malloc(4))) abort();
+		((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_AUTO, 4, 8 };
+		return 4;
+	}
+		case SSF_DCOND:
+		case SSF_SCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+		struct aafilter *b;
+		char *ptr;
+		int  code = (f->type == SSF_DCOND ? INET_DIAG_BC_D_COND : INET_DIAG_BC_S_COND);
+		int len = 0;
+
+		for (b = a; b; b = b->next) {
+			len += 4 + sizeof(struct inet_diag_hostcond);
+			if (a->addr.family == AF_INET6)
+				len += 16;
+			else
+				len += 4;
+			if (b->next)
+				len += 4;
+		}
+		if (!(ptr = malloc(len))) abort();
+		*bytecode = ptr;
+		for (b = a; b; b = b->next) {
+			struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)ptr;
+			int alen = (a->addr.family == AF_INET6 ? 16 : 4);
+			int oplen = alen + 4 + sizeof(struct inet_diag_hostcond);
+			struct inet_diag_hostcond *cond = (struct inet_diag_hostcond *)(ptr+4);
+
+			*op = (struct inet_diag_bc_op){ code, oplen, oplen+4 };
+			cond->family = a->addr.family;
+			cond->port = a->port;
+			cond->prefix_len = a->addr.bitlen;
+			memcpy(cond->addr, a->addr.data, alen);
+			ptr += oplen;
+			if (b->next) {
+				op = (struct inet_diag_bc_op *)ptr;
+				*op = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, len - (ptr-*bytecode)};
+				ptr += 4;
+			}
+		}
+		return ptr - *bytecode;
+	}
+		case SSF_D_GE:
+	{
+		struct aafilter *x = (void *)f->pred;
+
+		if (!(*bytecode = malloc(8))) abort();
+		((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_GE, 8, 12 };
+		((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
+		return 8;
+	}
+		case SSF_D_LE:
+	{
+		struct aafilter *x = (void *)f->pred;
+
+		if (!(*bytecode = malloc(8))) abort();
+		((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_D_LE, 8, 12 };
+		((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
+		return 8;
+	}
+		case SSF_S_GE:
+	{
+		struct aafilter *x = (void *)f->pred;
+
+		if (!(*bytecode = malloc(8))) abort();
+		((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_GE, 8, 12 };
+		((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
+		return 8;
+	}
+		case SSF_S_LE:
+	{
+		struct aafilter *x = (void *)f->pred;
+
+		if (!(*bytecode = malloc(8))) abort();
+		((struct inet_diag_bc_op *)*bytecode)[0] = (struct inet_diag_bc_op){ INET_DIAG_BC_S_LE, 8, 12 };
+		((struct inet_diag_bc_op *)*bytecode)[1] = (struct inet_diag_bc_op){ 0, 0, x->port };
+		return 8;
+	}
+
+		case SSF_AND:
+	{
+		char *a1 = NULL, *a2 = NULL, *a;
+		int l1, l2;
+
+		l1 = ssfilter_bytecompile(f->pred, &a1);
+		l2 = ssfilter_bytecompile(f->post, &a2);
+		if (!l1 || !l2) {
+			free(a1);
+			free(a2);
+			return 0;
+		}
+		if (!(a = malloc(l1+l2))) abort();
+		memcpy(a, a1, l1);
+		memcpy(a+l1, a2, l2);
+		free(a1); free(a2);
+		ssfilter_patch(a, l1, l2);
+		*bytecode = a;
+		return l1+l2;
+	}
+		case SSF_OR:
+	{
+		char *a1 = NULL, *a2 = NULL, *a;
+		int l1, l2;
+
+		l1 = ssfilter_bytecompile(f->pred, &a1);
+		l2 = ssfilter_bytecompile(f->post, &a2);
+		if (!l1 || !l2) {
+			free(a1);
+			free(a2);
+			return 0;
+		}
+		if (!(a = malloc(l1+l2+4))) abort();
+		memcpy(a, a1, l1);
+		memcpy(a+l1+4, a2, l2);
+		free(a1); free(a2);
+		*(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, l2+4 };
+		*bytecode = a;
+		return l1+l2+4;
+	}
+		case SSF_NOT:
+	{
+		char *a1 = NULL, *a;
+		int l1;
+
+		l1 = ssfilter_bytecompile(f->pred, &a1);
+		if (!l1) {
+			free(a1);
+			return 0;
+		}
+		if (!(a = malloc(l1+4))) abort();
+		memcpy(a, a1, l1);
+		free(a1);
+		*(struct inet_diag_bc_op *)(a+l1) = (struct inet_diag_bc_op){ INET_DIAG_BC_JMP, 4, 8 };
+		*bytecode = a;
+		return l1+4;
+	}
+		case SSF_DEVCOND:
+	{
+		/* bytecompile for SSF_DEVCOND not supported yet */
+		return 0;
+	}
+		case SSF_MARKMASK:
+	{
+		struct aafilter *a = (void *)f->pred;
+		struct instr {
+			struct inet_diag_bc_op op;
+			struct inet_diag_markcond cond;
+		};
+		int inslen = sizeof(struct instr);
+
+		if (!(*bytecode = malloc(inslen))) abort();
+		((struct instr *)*bytecode)[0] = (struct instr) {
+			{ INET_DIAG_BC_MARK_COND, inslen, inslen + 4 },
+			{ a->mark, a->mask},
+		};
+
+		return inslen;
+	}
+		case SSF_CGROUPCOND:
+	{
+		struct aafilter *a = (void *)f->pred;
+		struct instr {
+			struct inet_diag_bc_op op;
+			__u64 cgroup_id;
+		} __attribute__((packed));
+		int inslen = sizeof(struct instr);
+
+		if (!(*bytecode = malloc(inslen))) abort();
+		((struct instr *)*bytecode)[0] = (struct instr) {
+			{ INET_DIAG_BC_CGROUP_COND, inslen, inslen + 4 },
+			a->cgroup_id,
+		};
+
+		return inslen;
+	}
+		default:
+		abort();
+	}
+}
+
+static int remember_he(struct aafilter *a, struct hostent *he)
+{
+	char **ptr = he->h_addr_list;
+	int cnt = 0;
+	int len;
+
+	if (he->h_addrtype == AF_INET)
+		len = 4;
+	else if (he->h_addrtype == AF_INET6)
+		len = 16;
+	else
+		return 0;
+
+	while (*ptr) {
+		struct aafilter *b = a;
+
+		if (a->addr.bitlen) {
+			if ((b = malloc(sizeof(*b))) == NULL)
+				return cnt;
+			*b = *a;
+			a->next = b;
+		}
+		memcpy(b->addr.data, *ptr, len);
+		b->addr.bytelen = len;
+		b->addr.bitlen = len*8;
+		b->addr.family = he->h_addrtype;
+		ptr++;
+		cnt++;
+	}
+	return cnt;
+}
+
+static int get_dns_host(struct aafilter *a, const char *addr, int fam)
+{
+	static int notfirst;
+	int cnt = 0;
+	struct hostent *he;
+
+	a->addr.bitlen = 0;
+	if (!notfirst) {
+		sethostent(1);
+		notfirst = 1;
+	}
+	he = gethostbyname2(addr, fam == AF_UNSPEC ? AF_INET : fam);
+	if (he)
+		cnt = remember_he(a, he);
+	if (fam == AF_UNSPEC) {
+		he = gethostbyname2(addr, AF_INET6);
+		if (he)
+			cnt += remember_he(a, he);
+	}
+	return !cnt;
+}
+
+static int xll_initted;
+
+static void xll_init(void)
+{
+	struct rtnl_handle rth;
+
+	if (rtnl_open(&rth, 0) < 0)
+		exit(1);
+
+	ll_init_map(&rth);
+	rtnl_close(&rth);
+	xll_initted = 1;
+}
+
+static const char *xll_index_to_name(int index)
+{
+	if (!xll_initted)
+		xll_init();
+	return ll_index_to_name(index);
+}
+
+static int xll_name_to_index(const char *dev)
+{
+	if (!xll_initted)
+		xll_init();
+	return ll_name_to_index(dev);
+}
+
+void *parse_devcond(char *name)
+{
+	struct aafilter a = { .iface = 0 };
+	struct aafilter *res;
+
+	a.iface = xll_name_to_index(name);
+	if (a.iface == 0) {
+		char *end;
+		unsigned long n;
+
+		n = strtoul(name, &end, 0);
+		if (!end || end == name || *end || n > UINT_MAX)
+			return NULL;
+
+		a.iface = n;
+	}
+
+	res = malloc(sizeof(*res));
+	*res = a;
+
+	return res;
+}
+
+static void vsock_set_inet_prefix(inet_prefix *a, __u32 cid)
+{
+	*a = (inet_prefix){
+		.bytelen = sizeof(cid),
+		.family = AF_VSOCK,
+	};
+	memcpy(a->data, &cid, sizeof(cid));
+}
+
+static char* find_port(char *addr, bool is_port)
+{
+	char *port = NULL;
+	if (is_port)
+		port = addr;
+	else
+		port = strchr(addr, ':');
+	if (port && *port == ':')
+		*port++ = '\0';
+	return port;
+}
+
+void *parse_hostcond(char *addr, bool is_port)
+{
+	char *port = NULL;
+	struct aafilter a = { .port = -1 };
+	struct aafilter *res;
+	int fam = preferred_family;
+	struct filter *f = &current_filter;
+
+	if (strncmp(addr, "unix:", 5) == 0) {
+		fam = AF_UNIX;
+		addr += 5;
+	} else if (strncmp(addr, "link:", 5) == 0) {
+		fam = AF_PACKET;
+		addr += 5;
+	} else if (strncmp(addr, "netlink:", 8) == 0) {
+		fam = AF_NETLINK;
+		addr += 8;
+	} else if (strncmp(addr, "vsock:", 6) == 0) {
+		fam = AF_VSOCK;
+		addr += 6;
+	} else if (strncmp(addr, "inet:", 5) == 0) {
+		fam = AF_INET;
+		addr += 5;
+	} else if (strncmp(addr, "inet6:", 6) == 0) {
+		fam = AF_INET6;
+		addr += 6;
+	}
+
+	if (fam == AF_UNIX) {
+		char *p;
+
+		a.addr.family = AF_UNIX;
+		p = strdup(addr);
+		a.addr.bitlen = 8*strlen(p);
+		memcpy(a.addr.data, &p, sizeof(p));
+		goto out;
+	}
+
+	if (fam == AF_PACKET) {
+		a.addr.family = AF_PACKET;
+		a.addr.bitlen = 0;
+		port = find_port(addr, is_port);
+		if (port) {
+			if (*port && strcmp(port, "*")) {
+				if (get_long(&a.port, port, 0)) {
+					if ((a.port = xll_name_to_index(port)) <= 0)
+						return NULL;
+				}
+			}
+		}
+		if (!is_port && addr[0] && strcmp(addr, "*")) {
+			unsigned short tmp;
+
+			a.addr.bitlen = 32;
+			if (ll_proto_a2n(&tmp, addr))
+				return NULL;
+			a.addr.data[0] = ntohs(tmp);
+		}
+		goto out;
+	}
+
+	if (fam == AF_NETLINK) {
+		a.addr.family = AF_NETLINK;
+		a.addr.bitlen = 0;
+		port = find_port(addr, is_port);
+		if (port) {
+			if (*port && strcmp(port, "*")) {
+				if (get_long(&a.port, port, 0)) {
+					if (strcmp(port, "kernel") == 0)
+						a.port = 0;
+					else
+						return NULL;
+				}
+			}
+		}
+		if (!is_port && addr[0] && strcmp(addr, "*")) {
+			a.addr.bitlen = 32;
+			if (nl_proto_a2n(&a.addr.data[0], addr) == -1)
+				return NULL;
+		}
+		goto out;
+	}
+
+	if (fam == AF_VSOCK) {
+		__u32 cid = ~(__u32)0;
+
+		a.addr.family = AF_VSOCK;
+
+		port = find_port(addr, is_port);
+
+		if (port && strcmp(port, "*") &&
+		    get_u32((__u32 *)&a.port, port, 0))
+			return NULL;
+
+		if (!is_port && addr[0] && strcmp(addr, "*")) {
+			a.addr.bitlen = 32;
+			if (get_u32(&cid, addr, 0))
+				return NULL;
+		}
+		vsock_set_inet_prefix(&a.addr, cid);
+		goto out;
+	}
+
+	/* URL-like literal [] */
+	if (addr[0] == '[') {
+		addr++;
+		if ((port = strchr(addr, ']')) == NULL)
+			return NULL;
+		*port++ = 0;
+	} else if (addr[0] == '*') {
+		port = addr+1;
+	} else {
+		port = strrchr(strchr(addr, '/') ? : addr, ':');
+	}
+
+	if (is_port)
+		port = addr;
+
+	if (port && *port) {
+		if (*port == ':')
+			*port++ = 0;
+
+		if (*port && *port != '*') {
+			if (get_long(&a.port, port, 0)) {
+				struct servent *se1 = NULL;
+				struct servent *se2 = NULL;
+
+				if (current_filter.dbs&(1<<UDP_DB))
+					se1 = getservbyname(port, UDP_PROTO);
+				if (current_filter.dbs&(1<<TCP_DB))
+					se2 = getservbyname(port, TCP_PROTO);
+				if (se1 && se2 && se1->s_port != se2->s_port) {
+					fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
+					return NULL;
+				}
+				if (!se1)
+					se1 = se2;
+				if (se1) {
+					a.port = ntohs(se1->s_port);
+				} else {
+					struct scache *s;
+
+					for (s = rlist; s; s = s->next) {
+						if ((s->proto == UDP_PROTO &&
+						     (current_filter.dbs&(1<<UDP_DB))) ||
+						    (s->proto == TCP_PROTO &&
+						     (current_filter.dbs&(1<<TCP_DB)))) {
+							if (s->name && strcmp(s->name, port) == 0) {
+								if (a.port > 0 && a.port != s->port) {
+									fprintf(stderr, "Error: ambiguous port \"%s\".\n", port);
+									return NULL;
+								}
+								a.port = s->port;
+							}
+						}
+					}
+					if (a.port <= 0) {
+						fprintf(stderr, "Error: \"%s\" does not look like a port.\n", port);
+						return NULL;
+					}
+				}
+			}
+		}
+	}
+	if (!is_port && *addr && *addr != '*') {
+		if (get_prefix_1(&a.addr, addr, fam)) {
+			if (get_dns_host(&a, addr, fam)) {
+				fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", addr);
+				return NULL;
+			}
+		}
+	}
+
+out:
+	if (fam != AF_UNSPEC) {
+		int states = f->states;
+		f->families = 0;
+		filter_af_set(f, fam);
+		filter_states_set(f, states);
+	}
+
+	res = malloc(sizeof(*res));
+	if (res)
+		memcpy(res, &a, sizeof(a));
+	return res;
+}
+
+void *parse_markmask(const char *markmask)
+{
+	struct aafilter a, *res;
+
+	if (strchr(markmask, '/')) {
+		if (sscanf(markmask, "%i/%i", &a.mark, &a.mask) != 2)
+			return NULL;
+	} else {
+		a.mask = 0xffffffff;
+		if (sscanf(markmask, "%i", &a.mark) != 1)
+			return NULL;
+	}
+
+	res = malloc(sizeof(*res));
+	if (res)
+		memcpy(res, &a, sizeof(a));
+	return res;
+}
+
+void *parse_cgroupcond(const char *path)
+{
+	struct aafilter *res;
+	__u64 id;
+
+	id = get_cgroup2_id(path);
+	if (!id)
+		return NULL;
+
+	res = malloc(sizeof(*res));
+	if (res)
+		res->cgroup_id = id;
+
+	return res;
+}
+
+static void proc_ctx_print(struct sockstat *s)
+{
+	char *buf;
+
+	if (show_proc_ctx || show_sock_ctx) {
+		if (find_entry(s->ino, &buf,
+				(show_proc_ctx & show_sock_ctx) ?
+				PROC_SOCK_CTX : PROC_CTX) > 0) {
+			out(" users:(%s)", buf);
+			free(buf);
+		}
+	} else if (show_processes || show_threads) {
+		if (find_entry(s->ino, &buf, USERS) > 0) {
+			out(" users:(%s)", buf);
+			free(buf);
+		}
+	}
+
+	field_next();
+}
+
+static void inet_stats_print(struct sockstat *s, bool v6only)
+{
+	sock_state_print(s);
+
+	inet_addr_print(&s->local, s->lport, s->iface, v6only);
+	inet_addr_print(&s->remote, s->rport, 0, v6only);
+
+	proc_ctx_print(s);
+}
+
+static int proc_parse_inet_addr(char *loc, char *rem, int family, struct
+		sockstat * s)
+{
+	s->local.family = s->remote.family = family;
+	if (family == AF_INET) {
+		sscanf(loc, "%x:%x", s->local.data, (unsigned *)&s->lport);
+		sscanf(rem, "%x:%x", s->remote.data, (unsigned *)&s->rport);
+		s->local.bytelen = s->remote.bytelen = 4;
+		return 0;
+	} else {
+		sscanf(loc, "%08x%08x%08x%08x:%x",
+		       s->local.data,
+		       s->local.data + 1,
+		       s->local.data + 2,
+		       s->local.data + 3,
+		       &s->lport);
+		sscanf(rem, "%08x%08x%08x%08x:%x",
+		       s->remote.data,
+		       s->remote.data + 1,
+		       s->remote.data + 2,
+		       s->remote.data + 3,
+		       &s->rport);
+		s->local.bytelen = s->remote.bytelen = 16;
+		return 0;
+	}
+	return -1;
+}
+
+static int proc_inet_split_line(char *line, char **loc, char **rem, char **data)
+{
+	char *p;
+
+	if ((p = strchr(line, ':')) == NULL)
+		return -1;
+
+	*loc = p+2;
+	if ((p = strchr(*loc, ':')) == NULL)
+		return -1;
+
+	p[5] = 0;
+	*rem = p+6;
+	if ((p = strchr(*rem, ':')) == NULL)
+		return -1;
+
+	p[5] = 0;
+	*data = p+6;
+	return 0;
+}
+
+/*
+ * Display bandwidth in standard units
+ * See: https://en.wikipedia.org/wiki/Data-rate_units
+ * bw is in bits per second
+ */
+static char *sprint_bw(char *buf, double bw)
+{
+	if (numeric)
+		sprintf(buf, "%.0f", bw);
+	else if (bw >= 1e12)
+		sprintf(buf, "%.3gT", bw / 1e12);
+	else if (bw >= 1e9)
+		sprintf(buf, "%.3gG", bw / 1e9);
+	else if (bw >= 1e6)
+		sprintf(buf, "%.3gM", bw / 1e6);
+	else if (bw >= 1e3)
+		sprintf(buf, "%.3gk", bw / 1e3);
+	else
+		sprintf(buf, "%g", bw);
+
+	return buf;
+}
+
+static void sctp_stats_print(struct sctp_info *s)
+{
+	if (s->sctpi_tag)
+		out(" tag:%x", s->sctpi_tag);
+	if (s->sctpi_state)
+		out(" state:%s", sctp_sstate_name[s->sctpi_state]);
+	if (s->sctpi_rwnd)
+		out(" rwnd:%d", s->sctpi_rwnd);
+	if (s->sctpi_unackdata)
+		out(" unackdata:%d", s->sctpi_unackdata);
+	if (s->sctpi_penddata)
+		out(" penddata:%d", s->sctpi_penddata);
+	if (s->sctpi_instrms)
+		out(" instrms:%d", s->sctpi_instrms);
+	if (s->sctpi_outstrms)
+		out(" outstrms:%d", s->sctpi_outstrms);
+	if (s->sctpi_inqueue)
+		out(" inqueue:%d", s->sctpi_inqueue);
+	if (s->sctpi_outqueue)
+		out(" outqueue:%d", s->sctpi_outqueue);
+	if (s->sctpi_overall_error)
+		out(" overerr:%d", s->sctpi_overall_error);
+	if (s->sctpi_max_burst)
+		out(" maxburst:%d", s->sctpi_max_burst);
+	if (s->sctpi_maxseg)
+		out(" maxseg:%d", s->sctpi_maxseg);
+	if (s->sctpi_peer_rwnd)
+		out(" prwnd:%d", s->sctpi_peer_rwnd);
+	if (s->sctpi_peer_tag)
+		out(" ptag:%x", s->sctpi_peer_tag);
+	if (s->sctpi_peer_capable)
+		out(" pcapable:%d", s->sctpi_peer_capable);
+	if (s->sctpi_peer_sack)
+		out(" psack:%d", s->sctpi_peer_sack);
+	if (s->sctpi_s_autoclose)
+		out(" autoclose:%d", s->sctpi_s_autoclose);
+	if (s->sctpi_s_adaptation_ind)
+		out(" adapind:%d", s->sctpi_s_adaptation_ind);
+	if (s->sctpi_s_pd_point)
+		out(" pdpoint:%d", s->sctpi_s_pd_point);
+	if (s->sctpi_s_nodelay)
+		out(" nodelay:%d", s->sctpi_s_nodelay);
+	if (s->sctpi_s_disable_fragments)
+		out(" nofrag:%d", s->sctpi_s_disable_fragments);
+	if (s->sctpi_s_v4mapped)
+		out(" v4mapped:%d", s->sctpi_s_v4mapped);
+	if (s->sctpi_s_frag_interleave)
+		out(" fraginl:%d", s->sctpi_s_frag_interleave);
+}
+
+static void tcp_stats_print(struct tcpstat *s)
+{
+	char b1[64];
+
+	if (s->has_ts_opt)
+		out(" ts");
+	if (s->has_usec_ts_opt)
+		out(" usec_ts");
+	if (s->has_sack_opt)
+		out(" sack");
+	if (s->has_ecn_opt)
+		out(" ecn");
+	if (s->has_ecnseen_opt)
+		out(" ecnseen");
+	if (s->has_fastopen_opt)
+		out(" fastopen");
+	if (s->cong_alg[0])
+		out(" %s", s->cong_alg);
+	if (s->has_wscale_opt)
+		out(" wscale:%d,%d", s->snd_wscale, s->rcv_wscale);
+	if (s->rto)
+		out(" rto:%g", s->rto);
+	if (s->backoff)
+		out(" backoff:%u", s->backoff);
+	if (s->rtt)
+		out(" rtt:%g/%g", s->rtt, s->rttvar);
+	if (s->ato)
+		out(" ato:%g", s->ato);
+
+	if (s->qack)
+		out(" qack:%d", s->qack);
+	if (s->qack & 1)
+		out(" bidir");
+
+	if (s->mss)
+		out(" mss:%d", s->mss);
+	if (s->pmtu)
+		out(" pmtu:%u", s->pmtu);
+	if (s->rcv_mss)
+		out(" rcvmss:%d", s->rcv_mss);
+	if (s->advmss)
+		out(" advmss:%d", s->advmss);
+	if (s->cwnd)
+		out(" cwnd:%u", s->cwnd);
+	if (s->ssthresh)
+		out(" ssthresh:%d", s->ssthresh);
+
+	if (s->bytes_sent)
+		out(" bytes_sent:%llu", s->bytes_sent);
+	if (s->bytes_retrans)
+		out(" bytes_retrans:%llu", s->bytes_retrans);
+	if (s->bytes_acked)
+		out(" bytes_acked:%llu", s->bytes_acked);
+	if (s->bytes_received)
+		out(" bytes_received:%llu", s->bytes_received);
+	if (s->segs_out)
+		out(" segs_out:%u", s->segs_out);
+	if (s->segs_in)
+		out(" segs_in:%u", s->segs_in);
+	if (s->data_segs_out)
+		out(" data_segs_out:%u", s->data_segs_out);
+	if (s->data_segs_in)
+		out(" data_segs_in:%u", s->data_segs_in);
+
+	if (s->dctcp && s->dctcp->enabled) {
+		struct dctcpstat *dctcp = s->dctcp;
+
+		out(" dctcp:(ce_state:%u,alpha:%u,ab_ecn:%u,ab_tot:%u)",
+			     dctcp->ce_state, dctcp->alpha, dctcp->ab_ecn,
+			     dctcp->ab_tot);
+	} else if (s->dctcp) {
+		out(" dctcp:fallback_mode");
+	}
+
+	if (s->bbr_info) {
+		__u64 bw;
+
+		bw = s->bbr_info->bbr_bw_hi;
+		bw <<= 32;
+		bw |= s->bbr_info->bbr_bw_lo;
+
+		out(" bbr:(bw:%sbps,mrtt:%g",
+		    sprint_bw(b1, bw * 8.0),
+		    (double)s->bbr_info->bbr_min_rtt / 1000.0);
+		if (s->bbr_info->bbr_pacing_gain)
+			out(",pacing_gain:%g",
+			    (double)s->bbr_info->bbr_pacing_gain / 256.0);
+		if (s->bbr_info->bbr_cwnd_gain)
+			out(",cwnd_gain:%g",
+			    (double)s->bbr_info->bbr_cwnd_gain / 256.0);
+		out(")");
+	}
+
+	if (s->send_bps)
+		out(" send %sbps", sprint_bw(b1, s->send_bps));
+	if (s->lastsnd)
+		out(" lastsnd:%u", s->lastsnd);
+	if (s->lastrcv)
+		out(" lastrcv:%u", s->lastrcv);
+	if (s->lastack)
+		out(" lastack:%u", s->lastack);
+
+	if (s->pacing_rate) {
+		out(" pacing_rate %sbps", sprint_bw(b1, s->pacing_rate));
+		if (s->pacing_rate_max)
+			out("/%sbps", sprint_bw(b1, s->pacing_rate_max));
+	}
+
+	if (s->delivery_rate)
+		out(" delivery_rate %sbps", sprint_bw(b1, s->delivery_rate));
+	if (s->delivered)
+		out(" delivered:%u", s->delivered);
+	if (s->delivered_ce)
+		out(" delivered_ce:%u", s->delivered_ce);
+	if (s->app_limited)
+		out(" app_limited");
+
+	if (s->busy_time) {
+		out(" busy:%llums", s->busy_time / 1000);
+		if (s->rwnd_limited)
+			out(" rwnd_limited:%llums(%.1f%%)",
+			    s->rwnd_limited / 1000,
+			    100.0 * s->rwnd_limited / s->busy_time);
+		if (s->sndbuf_limited)
+			out(" sndbuf_limited:%llums(%.1f%%)",
+			    s->sndbuf_limited / 1000,
+			    100.0 * s->sndbuf_limited / s->busy_time);
+	}
+
+	if (s->unacked)
+		out(" unacked:%u", s->unacked);
+	if (s->retrans || s->retrans_total)
+		out(" retrans:%u/%u", s->retrans, s->retrans_total);
+	if (s->lost)
+		out(" lost:%u", s->lost);
+	if (s->sacked && s->ss.state != SS_LISTEN)
+		out(" sacked:%u", s->sacked);
+	if (s->dsack_dups)
+		out(" dsack_dups:%u", s->dsack_dups);
+	if (s->fackets)
+		out(" fackets:%u", s->fackets);
+	if (s->reordering != 3)
+		out(" reordering:%d", s->reordering);
+	if (s->reord_seen)
+		out(" reord_seen:%d", s->reord_seen);
+	if (s->rcv_rtt)
+		out(" rcv_rtt:%g", s->rcv_rtt);
+	if (s->rcv_space)
+		out(" rcv_space:%d", s->rcv_space);
+	if (s->rcv_ssthresh)
+		out(" rcv_ssthresh:%u", s->rcv_ssthresh);
+	if (s->not_sent)
+		out(" notsent:%u", s->not_sent);
+	if (s->min_rtt)
+		out(" minrtt:%g", s->min_rtt);
+	if (s->rcv_ooopack)
+		out(" rcv_ooopack:%u", s->rcv_ooopack);
+	if (s->snd_wnd)
+		out(" snd_wnd:%u", s->snd_wnd);
+	if (s->rcv_wnd)
+		out(" rcv_wnd:%u", s->rcv_wnd);
+	if (s->rehash)
+		out(" rehash:%u", s->rehash);
+}
+
+static void tcp_timer_print(struct tcpstat *s)
+{
+	static const char * const tmr_name[] = {
+		"off",
+		"on",
+		"keepalive",
+		"timewait",
+		"persist",
+		"unknown"
+	};
+
+	if (s->timer) {
+		if (s->timer > 4)
+			s->timer = 5;
+		out(" timer:(%s,%s,%d)",
+			     tmr_name[s->timer],
+			     print_ms_timer(s->timeout),
+			     s->retrans);
+	}
+}
+
+static void sctp_timer_print(struct tcpstat *s)
+{
+	if (s->timer)
+		out(" timer:(T3_RTX,%s,%d)",
+		    print_ms_timer(s->timeout), s->retrans);
+}
+
+static int tcp_show_line(char *line, const struct filter *f, int family)
+{
+	int rto = 0, ato = 0;
+	struct tcpstat s = {};
+	char *loc, *rem, *data;
+	char opt[256];
+	int n;
+	int hz = get_user_hz();
+
+	if (proc_inet_split_line(line, &loc, &rem, &data))
+		return -1;
+
+	int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
+
+	if (!(f->states & (1 << state)))
+		return 0;
+
+	proc_parse_inet_addr(loc, rem, family, &s.ss);
+
+	if (f->f && run_ssfilter(f->f, &s.ss) == 0)
+		return 0;
+
+	opt[0] = 0;
+	n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %u %d %[^\n]\n",
+		   &s.ss.state, &s.ss.wq, &s.ss.rq,
+		   &s.timer, &s.timeout, &s.retrans, &s.ss.uid, &s.probes,
+		   &s.ss.ino, &s.ss.refcnt, &s.ss.sk, &rto, &ato, &s.qack, &s.cwnd,
+		   &s.ssthresh, opt);
+
+	if (n < 17)
+		opt[0] = 0;
+
+	if (n < 12) {
+		rto = 0;
+		s.cwnd = 2;
+		s.ssthresh = -1;
+		ato = s.qack = 0;
+	}
+
+	s.retrans   = s.timer != 1 ? s.probes : s.retrans;
+	s.timeout   = (s.timeout * 1000 + hz - 1) / hz;
+	s.ato	    = (double)ato / hz;
+	s.qack	   /= 2;
+	s.rto	    = (double)rto;
+	s.ssthresh  = s.ssthresh == -1 ? 0 : s.ssthresh;
+	s.rto	    = s.rto != 3 * hz  ? s.rto / hz : 0;
+	s.ss.type   = IPPROTO_TCP;
+
+	inet_stats_print(&s.ss, false);
+
+	if (show_options)
+		tcp_timer_print(&s);
+
+	if (show_details) {
+		sock_details_print(&s.ss);
+		if (opt[0])
+			out(" opt:\"%s\"", opt);
+	}
+
+	if (show_tcpinfo)
+		tcp_stats_print(&s);
+
+	return 0;
+}
+
+static int generic_record_read(FILE *fp,
+			       int (*worker)(char*, const struct filter *, int),
+			       const struct filter *f, int fam)
+{
+	char line[256];
+
+	/* skip header */
+	if (fgets(line, sizeof(line), fp) == NULL)
+		goto outerr;
+
+	while (fgets(line, sizeof(line), fp) != NULL) {
+		int n = strlen(line);
+
+		if (n == 0 || line[n-1] != '\n') {
+			errno = -EINVAL;
+			return -1;
+		}
+		line[n-1] = 0;
+
+		if (worker(line, f, fam) < 0)
+			return 0;
+	}
+outerr:
+
+	return ferror(fp) ? -1 : 0;
+}
+
+static void print_skmeminfo(struct rtattr *tb[], int attrtype)
+{
+	const __u32 *skmeminfo;
+
+	if (!tb[attrtype]) {
+		if (attrtype == INET_DIAG_SKMEMINFO) {
+			if (!tb[INET_DIAG_MEMINFO])
+				return;
+
+			const struct inet_diag_meminfo *minfo =
+				RTA_DATA(tb[INET_DIAG_MEMINFO]);
+
+			out(" mem:(r%u,w%u,f%u,t%u)",
+				   minfo->idiag_rmem,
+				   minfo->idiag_wmem,
+				   minfo->idiag_fmem,
+				   minfo->idiag_tmem);
+		}
+		return;
+	}
+
+	skmeminfo = RTA_DATA(tb[attrtype]);
+
+	out(" skmem:(r%u,rb%u,t%u,tb%u,f%u,w%u,o%u",
+		     skmeminfo[SK_MEMINFO_RMEM_ALLOC],
+		     skmeminfo[SK_MEMINFO_RCVBUF],
+		     skmeminfo[SK_MEMINFO_WMEM_ALLOC],
+		     skmeminfo[SK_MEMINFO_SNDBUF],
+		     skmeminfo[SK_MEMINFO_FWD_ALLOC],
+		     skmeminfo[SK_MEMINFO_WMEM_QUEUED],
+		     skmeminfo[SK_MEMINFO_OPTMEM]);
+
+	if (RTA_PAYLOAD(tb[attrtype]) >=
+		(SK_MEMINFO_BACKLOG + 1) * sizeof(__u32))
+		out(",bl%u", skmeminfo[SK_MEMINFO_BACKLOG]);
+
+	if (RTA_PAYLOAD(tb[attrtype]) >=
+		(SK_MEMINFO_DROPS + 1) * sizeof(__u32))
+		out(",d%u", skmeminfo[SK_MEMINFO_DROPS]);
+
+	out(")");
+}
+
+/* like lib/utils.c print_escape_buf(), but use out(), not printf()! */
+static void out_escape_buf(const __u8 *buf, size_t len, const char *escape)
+{
+	size_t i;
+
+	for (i = 0; i < len; ++i) {
+		if (isprint(buf[i]) && buf[i] != '\\' &&
+		    !strchr(escape, buf[i]))
+			out("%c", buf[i]);
+		else
+			out("\\%03o", buf[i]);
+	}
+}
+
+static void print_md5sig(struct tcp_diag_md5sig *sig)
+{
+	out("%s/%d=",
+	    format_host(sig->tcpm_family,
+			sig->tcpm_family == AF_INET6 ? 16 : 4,
+			&sig->tcpm_addr),
+	    sig->tcpm_prefixlen);
+	out_escape_buf(sig->tcpm_key, sig->tcpm_keylen, " ,");
+}
+
+static void tcp_tls_version(struct rtattr *attr)
+{
+	u_int16_t val;
+
+	if (!attr)
+		return;
+	val = rta_getattr_u16(attr);
+
+	switch (val) {
+	case TLS_1_2_VERSION:
+		out(" version: 1.2");
+		break;
+	case TLS_1_3_VERSION:
+		out(" version: 1.3");
+		break;
+	default:
+		out(" version: unknown(%hu)", val);
+		break;
+	}
+}
+
+static void tcp_tls_cipher(struct rtattr *attr)
+{
+	u_int16_t val;
+
+	if (!attr)
+		return;
+	val = rta_getattr_u16(attr);
+
+	switch (val) {
+	case TLS_CIPHER_AES_GCM_128:
+		out(" cipher: aes-gcm-128");
+		break;
+	case TLS_CIPHER_AES_GCM_256:
+		out(" cipher: aes-gcm-256");
+		break;
+	}
+}
+
+static void tcp_tls_conf(const char *name, struct rtattr *attr)
+{
+	u_int16_t val;
+
+	if (!attr)
+		return;
+	val = rta_getattr_u16(attr);
+
+	switch (val) {
+	case TLS_CONF_BASE:
+		out(" %s: none", name);
+		break;
+	case TLS_CONF_SW:
+		out(" %s: sw", name);
+		break;
+	case TLS_CONF_HW:
+		out(" %s: hw", name);
+		break;
+	case TLS_CONF_HW_RECORD:
+		out(" %s: hw-record", name);
+		break;
+	default:
+		out(" %s: unknown(%hu)", name, val);
+		break;
+	}
+}
+
+static void mptcp_subflow_info(struct rtattr *tb[])
+{
+	u_int32_t flags = 0;
+
+	if (tb[MPTCP_SUBFLOW_ATTR_FLAGS]) {
+		char caps[32 + 1] = { 0 }, *cap = &caps[0];
+
+		flags = rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_FLAGS]);
+
+		if (flags & MPTCP_SUBFLOW_FLAG_MCAP_REM)
+			*cap++ = 'M';
+		if (flags & MPTCP_SUBFLOW_FLAG_MCAP_LOC)
+			*cap++ = 'm';
+		if (flags & MPTCP_SUBFLOW_FLAG_JOIN_REM)
+			*cap++ = 'J';
+		if (flags & MPTCP_SUBFLOW_FLAG_JOIN_LOC)
+			*cap++ = 'j';
+		if (flags & MPTCP_SUBFLOW_FLAG_BKUP_REM)
+			*cap++ = 'B';
+		if (flags & MPTCP_SUBFLOW_FLAG_BKUP_LOC)
+			*cap++ = 'b';
+		if (flags & MPTCP_SUBFLOW_FLAG_FULLY_ESTABLISHED)
+			*cap++ = 'e';
+		if (flags & MPTCP_SUBFLOW_FLAG_CONNECTED)
+			*cap++ = 'c';
+		if (flags & MPTCP_SUBFLOW_FLAG_MAPVALID)
+			*cap++ = 'v';
+		if (flags)
+			out(" flags:%s", caps);
+	}
+	if (tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM] &&
+	    tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC] &&
+	    tb[MPTCP_SUBFLOW_ATTR_ID_REM] &&
+	    tb[MPTCP_SUBFLOW_ATTR_ID_LOC])
+		out(" token:%04x(id:%hhu)/%04x(id:%hhu)",
+		    rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_REM]),
+		    rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_REM]),
+		    rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_TOKEN_LOC]),
+		    rta_getattr_u8(tb[MPTCP_SUBFLOW_ATTR_ID_LOC]));
+	if (tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ])
+		out(" seq:%llx",
+		    rta_getattr_u64(tb[MPTCP_SUBFLOW_ATTR_MAP_SEQ]));
+	if (tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ])
+		out(" sfseq:%x",
+		    rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_SFSEQ]));
+	if (tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET])
+		out(" ssnoff:%x",
+		    rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_SSN_OFFSET]));
+	if (tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN])
+		out(" maplen:%x",
+		    rta_getattr_u32(tb[MPTCP_SUBFLOW_ATTR_MAP_DATALEN]));
+}
+
+#define TCPI_HAS_OPT(info, opt) !!(info->tcpi_options & (opt))
+
+static void tcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
+		struct rtattr *tb[])
+{
+	double rtt = 0;
+	struct tcpstat s = {};
+
+	s.ss.state = r->idiag_state;
+
+	print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
+
+	if (tb[INET_DIAG_INFO]) {
+		struct tcp_info *info;
+		int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
+
+		/* workaround for older kernels with less fields */
+		if (len < sizeof(*info)) {
+			info = alloca(sizeof(*info));
+			memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
+			memset((char *)info + len, 0, sizeof(*info) - len);
+		} else
+			info = RTA_DATA(tb[INET_DIAG_INFO]);
+
+		if (show_options) {
+			s.has_ts_opt	   = TCPI_HAS_OPT(info, TCPI_OPT_TIMESTAMPS);
+			s.has_usec_ts_opt  = TCPI_HAS_OPT(info, TCPI_OPT_USEC_TS);
+			s.has_sack_opt	   = TCPI_HAS_OPT(info, TCPI_OPT_SACK);
+			s.has_ecn_opt	   = TCPI_HAS_OPT(info, TCPI_OPT_ECN);
+			s.has_ecnseen_opt  = TCPI_HAS_OPT(info, TCPI_OPT_ECN_SEEN);
+			s.has_fastopen_opt = TCPI_HAS_OPT(info, TCPI_OPT_SYN_DATA);
+		}
+
+		if (tb[INET_DIAG_CONG])
+			strncpy(s.cong_alg,
+				rta_getattr_str(tb[INET_DIAG_CONG]),
+				sizeof(s.cong_alg) - 1);
+
+		if (TCPI_HAS_OPT(info, TCPI_OPT_WSCALE)) {
+			s.has_wscale_opt  = true;
+			s.snd_wscale	  = info->tcpi_snd_wscale;
+			s.rcv_wscale	  = info->tcpi_rcv_wscale;
+		}
+
+		if (info->tcpi_rto && info->tcpi_rto != 3000000)
+			s.rto = (double)info->tcpi_rto / 1000;
+
+		s.backoff	 = info->tcpi_backoff;
+		s.rtt		 = (double)info->tcpi_rtt / 1000;
+		s.rttvar	 = (double)info->tcpi_rttvar / 1000;
+		s.ato		 = (double)info->tcpi_ato / 1000;
+		s.mss		 = info->tcpi_snd_mss;
+		s.rcv_mss	 = info->tcpi_rcv_mss;
+		s.advmss	 = info->tcpi_advmss;
+		s.rcv_space	 = info->tcpi_rcv_space;
+		s.rcv_rtt	 = (double)info->tcpi_rcv_rtt / 1000;
+		s.lastsnd	 = info->tcpi_last_data_sent;
+		s.lastrcv	 = info->tcpi_last_data_recv;
+		s.lastack	 = info->tcpi_last_ack_recv;
+		s.unacked	 = info->tcpi_unacked;
+		s.retrans	 = info->tcpi_retrans;
+		s.retrans_total  = info->tcpi_total_retrans;
+		s.lost		 = info->tcpi_lost;
+		s.sacked	 = info->tcpi_sacked;
+		s.fackets	 = info->tcpi_fackets;
+		s.reordering	 = info->tcpi_reordering;
+		s.rcv_ssthresh   = info->tcpi_rcv_ssthresh;
+		s.cwnd		 = info->tcpi_snd_cwnd;
+		s.pmtu		 = info->tcpi_pmtu;
+
+		if (info->tcpi_snd_ssthresh < 0xFFFF)
+			s.ssthresh = info->tcpi_snd_ssthresh;
+
+		rtt = (double) info->tcpi_rtt;
+		if (tb[INET_DIAG_VEGASINFO]) {
+			const struct tcpvegas_info *vinfo
+				= RTA_DATA(tb[INET_DIAG_VEGASINFO]);
+
+			if (vinfo->tcpv_enabled &&
+					vinfo->tcpv_rtt && vinfo->tcpv_rtt != 0x7fffffff)
+				rtt =  vinfo->tcpv_rtt;
+		}
+
+		if (tb[INET_DIAG_DCTCPINFO]) {
+			struct dctcpstat *dctcp = malloc(sizeof(struct
+						dctcpstat));
+
+			const struct tcp_dctcp_info *dinfo
+				= RTA_DATA(tb[INET_DIAG_DCTCPINFO]);
+
+			dctcp->enabled	= !!dinfo->dctcp_enabled;
+			dctcp->ce_state = dinfo->dctcp_ce_state;
+			dctcp->alpha	= dinfo->dctcp_alpha;
+			dctcp->ab_ecn	= dinfo->dctcp_ab_ecn;
+			dctcp->ab_tot	= dinfo->dctcp_ab_tot;
+			s.dctcp		= dctcp;
+		}
+
+		if (tb[INET_DIAG_BBRINFO]) {
+			const void *bbr_info = RTA_DATA(tb[INET_DIAG_BBRINFO]);
+			int len = min(RTA_PAYLOAD(tb[INET_DIAG_BBRINFO]),
+				      sizeof(*s.bbr_info));
+
+			s.bbr_info = calloc(1, sizeof(*s.bbr_info));
+			if (s.bbr_info && bbr_info)
+				memcpy(s.bbr_info, bbr_info, len);
+		}
+
+		if (rtt > 0 && info->tcpi_snd_mss && info->tcpi_snd_cwnd) {
+			s.send_bps = (double) info->tcpi_snd_cwnd *
+				(double)info->tcpi_snd_mss * 8000000. / rtt;
+		}
+
+		if (info->tcpi_pacing_rate &&
+				info->tcpi_pacing_rate != ~0ULL) {
+			s.pacing_rate = info->tcpi_pacing_rate * 8.;
+
+			if (info->tcpi_max_pacing_rate &&
+					info->tcpi_max_pacing_rate != ~0ULL)
+				s.pacing_rate_max = info->tcpi_max_pacing_rate * 8.;
+		}
+		s.bytes_acked = info->tcpi_bytes_acked;
+		s.bytes_received = info->tcpi_bytes_received;
+		s.segs_out = info->tcpi_segs_out;
+		s.segs_in = info->tcpi_segs_in;
+		s.data_segs_out = info->tcpi_data_segs_out;
+		s.data_segs_in = info->tcpi_data_segs_in;
+		s.not_sent = info->tcpi_notsent_bytes;
+		if (info->tcpi_min_rtt && info->tcpi_min_rtt != ~0U)
+			s.min_rtt = (double) info->tcpi_min_rtt / 1000;
+		s.delivery_rate = info->tcpi_delivery_rate * 8.;
+		s.app_limited = info->tcpi_delivery_rate_app_limited;
+		s.busy_time = info->tcpi_busy_time;
+		s.rwnd_limited = info->tcpi_rwnd_limited;
+		s.sndbuf_limited = info->tcpi_sndbuf_limited;
+		s.delivered = info->tcpi_delivered;
+		s.delivered_ce = info->tcpi_delivered_ce;
+		s.dsack_dups = info->tcpi_dsack_dups;
+		s.reord_seen = info->tcpi_reord_seen;
+		s.bytes_sent = info->tcpi_bytes_sent;
+		s.bytes_retrans = info->tcpi_bytes_retrans;
+		s.rcv_ooopack = info->tcpi_rcv_ooopack;
+		s.snd_wnd = info->tcpi_snd_wnd;
+		s.rcv_wnd = info->tcpi_rcv_wnd;
+		s.rehash = info->tcpi_rehash;
+		tcp_stats_print(&s);
+		free(s.dctcp);
+		free(s.bbr_info);
+	}
+	if (tb[INET_DIAG_MD5SIG]) {
+		struct tcp_diag_md5sig *sig = RTA_DATA(tb[INET_DIAG_MD5SIG]);
+		int len = RTA_PAYLOAD(tb[INET_DIAG_MD5SIG]);
+
+		out(" md5keys:");
+		print_md5sig(sig++);
+		for (len -= sizeof(*sig); len > 0; len -= sizeof(*sig)) {
+			out(",");
+			print_md5sig(sig++);
+		}
+	}
+	if (tb[INET_DIAG_ULP_INFO]) {
+		struct rtattr *ulpinfo[INET_ULP_INFO_MAX + 1] = { 0 };
+
+		parse_rtattr_nested(ulpinfo, INET_ULP_INFO_MAX,
+				    tb[INET_DIAG_ULP_INFO]);
+
+		if (ulpinfo[INET_ULP_INFO_NAME])
+			out(" tcp-ulp-%s",
+			    rta_getattr_str(ulpinfo[INET_ULP_INFO_NAME]));
+
+		if (ulpinfo[INET_ULP_INFO_TLS]) {
+			struct rtattr *tlsinfo[TLS_INFO_MAX + 1] = { 0 };
+
+			parse_rtattr_nested(tlsinfo, TLS_INFO_MAX,
+					    ulpinfo[INET_ULP_INFO_TLS]);
+
+			tcp_tls_version(tlsinfo[TLS_INFO_VERSION]);
+			tcp_tls_cipher(tlsinfo[TLS_INFO_CIPHER]);
+			tcp_tls_conf("rxconf", tlsinfo[TLS_INFO_RXCONF]);
+			tcp_tls_conf("txconf", tlsinfo[TLS_INFO_TXCONF]);
+			if (!!tlsinfo[TLS_INFO_ZC_RO_TX])
+				out(" zc_ro_tx");
+			if (!!tlsinfo[TLS_INFO_RX_NO_PAD])
+				out(" no_pad_rx");
+		}
+		if (ulpinfo[INET_ULP_INFO_MPTCP]) {
+			struct rtattr *sfinfo[MPTCP_SUBFLOW_ATTR_MAX + 1] =
+				{ 0 };
+
+			parse_rtattr_nested(sfinfo, MPTCP_SUBFLOW_ATTR_MAX,
+					    ulpinfo[INET_ULP_INFO_MPTCP]);
+			mptcp_subflow_info(sfinfo);
+		}
+	}
+}
+
+static void mptcp_stats_print(struct mptcp_info *s)
+{
+	if (s->mptcpi_subflows)
+		out(" subflows:%u", s->mptcpi_subflows);
+	if (s->mptcpi_add_addr_signal)
+		out(" add_addr_signal:%u", s->mptcpi_add_addr_signal);
+	if (s->mptcpi_add_addr_accepted)
+		out(" add_addr_accepted:%u", s->mptcpi_add_addr_accepted);
+	if (s->mptcpi_subflows_max)
+		out(" subflows_max:%u", s->mptcpi_subflows_max);
+	if (s->mptcpi_add_addr_signal_max)
+		out(" add_addr_signal_max:%u", s->mptcpi_add_addr_signal_max);
+	if (s->mptcpi_add_addr_accepted_max)
+		out(" add_addr_accepted_max:%u", s->mptcpi_add_addr_accepted_max);
+	if (s->mptcpi_flags & MPTCP_INFO_FLAG_FALLBACK)
+		out(" fallback");
+	if (s->mptcpi_flags & MPTCP_INFO_FLAG_REMOTE_KEY_RECEIVED)
+		out(" remote_key");
+	if (s->mptcpi_token)
+		out(" token:%x", s->mptcpi_token);
+	if (s->mptcpi_write_seq)
+		out(" write_seq:%llu", s->mptcpi_write_seq);
+	if (s->mptcpi_snd_una)
+		out(" snd_una:%llu", s->mptcpi_snd_una);
+	if (s->mptcpi_rcv_nxt)
+		out(" rcv_nxt:%llu", s->mptcpi_rcv_nxt);
+	if (s->mptcpi_local_addr_used)
+		out(" local_addr_used:%u", s->mptcpi_local_addr_used);
+	if (s->mptcpi_local_addr_max)
+		out(" local_addr_max:%u", s->mptcpi_local_addr_max);
+	if (s->mptcpi_csum_enabled)
+		out(" csum_enabled:%u", s->mptcpi_csum_enabled);
+	if (s->mptcpi_retransmits)
+		out(" retransmits:%u", s->mptcpi_retransmits);
+	if (s->mptcpi_bytes_retrans)
+		out(" bytes_retrans:%llu", s->mptcpi_bytes_retrans);
+	if (s->mptcpi_bytes_sent)
+		out(" bytes_sent:%llu", s->mptcpi_bytes_sent);
+	if (s->mptcpi_bytes_received)
+		out(" bytes_received:%llu", s->mptcpi_bytes_received);
+	if (s->mptcpi_bytes_acked)
+		out(" bytes_acked:%llu", s->mptcpi_bytes_acked);
+	if (s->mptcpi_subflows_total)
+		out(" subflows_total:%u", s->mptcpi_subflows_total);
+}
+
+static void mptcp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
+			    struct rtattr *tb[])
+{
+	print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
+
+	if (tb[INET_DIAG_INFO]) {
+		struct mptcp_info *info;
+		int len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
+
+		/* workaround for older kernels with less fields */
+		if (len < sizeof(*info)) {
+			info = alloca(sizeof(*info));
+			memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
+			memset((char *)info + len, 0, sizeof(*info) - len);
+		} else
+			info = RTA_DATA(tb[INET_DIAG_INFO]);
+
+		mptcp_stats_print(info);
+	}
+}
+
+static const char *format_host_sa(struct sockaddr_storage *sa)
+{
+	union {
+		struct sockaddr_in sin;
+		struct sockaddr_in6 sin6;
+	} *saddr = (void *)sa;
+
+	switch (sa->ss_family) {
+	case AF_INET:
+		return format_host(AF_INET, 4, &saddr->sin.sin_addr);
+	case AF_INET6:
+		return format_host(AF_INET6, 16, &saddr->sin6.sin6_addr);
+	default:
+		return "";
+	}
+}
+
+static void sctp_show_info(const struct nlmsghdr *nlh, struct inet_diag_msg *r,
+		struct rtattr *tb[])
+{
+	struct sockaddr_storage *sa;
+	int len;
+
+	print_skmeminfo(tb, INET_DIAG_SKMEMINFO);
+
+	if (tb[INET_DIAG_LOCALS]) {
+		len = RTA_PAYLOAD(tb[INET_DIAG_LOCALS]);
+		sa = RTA_DATA(tb[INET_DIAG_LOCALS]);
+
+		out(" locals:%s", format_host_sa(sa));
+		for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
+			out(",%s", format_host_sa(sa));
+
+	}
+	if (tb[INET_DIAG_PEERS]) {
+		len = RTA_PAYLOAD(tb[INET_DIAG_PEERS]);
+		sa = RTA_DATA(tb[INET_DIAG_PEERS]);
+
+		out(" peers:%s", format_host_sa(sa));
+		for (sa++, len -= sizeof(*sa); len > 0; sa++, len -= sizeof(*sa))
+			out(",%s", format_host_sa(sa));
+	}
+	if (tb[INET_DIAG_INFO]) {
+		struct sctp_info *info;
+		len = RTA_PAYLOAD(tb[INET_DIAG_INFO]);
+
+		/* workaround for older kernels with less fields */
+		if (len < sizeof(*info)) {
+			info = alloca(sizeof(*info));
+			memcpy(info, RTA_DATA(tb[INET_DIAG_INFO]), len);
+			memset((char *)info + len, 0, sizeof(*info) - len);
+		} else
+			info = RTA_DATA(tb[INET_DIAG_INFO]);
+
+		sctp_stats_print(info);
+	}
+}
+
+static void parse_diag_msg(struct nlmsghdr *nlh, struct sockstat *s)
+{
+	struct rtattr *tb[INET_DIAG_MAX+1];
+	struct inet_diag_msg *r = NLMSG_DATA(nlh);
+
+	parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+
+	s->state	= r->idiag_state;
+	s->local.family	= s->remote.family = r->idiag_family;
+	s->lport	= ntohs(r->id.idiag_sport);
+	s->rport	= ntohs(r->id.idiag_dport);
+	s->wq		= r->idiag_wqueue;
+	s->rq		= r->idiag_rqueue;
+	s->ino		= r->idiag_inode;
+	s->uid		= r->idiag_uid;
+	s->iface	= r->id.idiag_if;
+	s->sk		= cookie_sk_get(&r->id.idiag_cookie[0]);
+
+	s->mark = 0;
+	if (tb[INET_DIAG_MARK])
+		s->mark = rta_getattr_u32(tb[INET_DIAG_MARK]);
+	s->cgroup_id = 0;
+	if (tb[INET_DIAG_CGROUP_ID])
+		s->cgroup_id = rta_getattr_u64(tb[INET_DIAG_CGROUP_ID]);
+	if (tb[INET_DIAG_PROTOCOL])
+		s->raw_prot = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
+	else
+		s->raw_prot = 0;
+
+	if (s->local.family == AF_INET)
+		s->local.bytelen = s->remote.bytelen = 4;
+	else
+		s->local.bytelen = s->remote.bytelen = 16;
+
+	memcpy(s->local.data, r->id.idiag_src, s->local.bytelen);
+	memcpy(s->remote.data, r->id.idiag_dst, s->local.bytelen);
+}
+
+static int inet_show_sock(struct nlmsghdr *nlh,
+			  struct sockstat *s)
+{
+	struct rtattr *tb[INET_DIAG_MAX+1];
+	struct inet_diag_msg *r = NLMSG_DATA(nlh);
+	unsigned char v6only = 0;
+
+	parse_rtattr(tb, INET_DIAG_MAX, (struct rtattr *)(r+1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+
+	if (tb[INET_DIAG_PROTOCOL])
+		s->type = rta_getattr_u8(tb[INET_DIAG_PROTOCOL]);
+
+	if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
+		v6only = rta_getattr_u8(tb[INET_DIAG_SKV6ONLY]);
+
+	inet_stats_print(s, v6only);
+
+	if (show_options) {
+		struct tcpstat t = {};
+
+		t.timer = r->idiag_timer;
+		t.timeout = r->idiag_expires;
+		t.retrans = r->idiag_retrans;
+		if (s->type == IPPROTO_SCTP)
+			sctp_timer_print(&t);
+		else
+			tcp_timer_print(&t);
+	}
+
+	if (show_details) {
+		sock_details_print(s);
+		if (s->local.family == AF_INET6 && tb[INET_DIAG_SKV6ONLY])
+			out(" v6only:%u", v6only);
+
+		if (tb[INET_DIAG_SHUTDOWN]) {
+			unsigned char mask;
+
+			mask = rta_getattr_u8(tb[INET_DIAG_SHUTDOWN]);
+			out(" %c-%c",
+			    mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
+		}
+	}
+
+	if (show_tos) {
+		if (tb[INET_DIAG_TOS])
+			out(" tos:%#x", rta_getattr_u8(tb[INET_DIAG_TOS]));
+		if (tb[INET_DIAG_TCLASS])
+			out(" tclass:%#x", rta_getattr_u8(tb[INET_DIAG_TCLASS]));
+		if (tb[INET_DIAG_CLASS_ID])
+			out(" class_id:%#x", rta_getattr_u32(tb[INET_DIAG_CLASS_ID]));
+	}
+
+	if (show_cgroup) {
+		if (tb[INET_DIAG_CGROUP_ID])
+			out(" cgroup:%s", cg_id_to_path(rta_getattr_u64(tb[INET_DIAG_CGROUP_ID])));
+	}
+
+	if (show_inet_sockopt) {
+		if (tb[INET_DIAG_SOCKOPT] && RTA_PAYLOAD(tb[INET_DIAG_SOCKOPT]) >=
+		    sizeof(struct inet_diag_sockopt)) {
+			const struct inet_diag_sockopt *sockopt =
+					RTA_DATA(tb[INET_DIAG_SOCKOPT]);
+			if (!oneline)
+				out("\n\tinet-sockopt: (");
+			else
+				out(" inet-sockopt: (");
+			if (sockopt->recverr)
+				out(" recverr");
+			if (sockopt->is_icsk)
+				out(" is_icsk");
+			if (sockopt->freebind)
+				out(" freebind");
+			if (sockopt->hdrincl)
+				out(" hdrincl");
+			if (sockopt->mc_loop)
+				out(" mc_loop");
+			if (sockopt->transparent)
+				out(" transparent");
+			if (sockopt->mc_all)
+				out(" mc_all");
+			if (sockopt->nodefrag)
+				out(" nodefrag");
+			if (sockopt->bind_address_no_port)
+				out(" bind_addr_no_port");
+			if (sockopt->recverr_rfc4884)
+				out(" recverr_rfc4884");
+			if (sockopt->defer_connect)
+				out(" defer_connect");
+			out(")");
+		}
+	}
+
+	if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
+		if (!oneline)
+			out("\n\t");
+		if (s->type == IPPROTO_SCTP)
+			sctp_show_info(nlh, r, tb);
+		else if (s->type == IPPROTO_MPTCP)
+			mptcp_show_info(nlh, r, tb);
+		else
+			tcp_show_info(nlh, r, tb);
+	}
+	sctp_ino = s->ino;
+
+	return 0;
+}
+
+static int tcpdiag_send(int fd, int protocol, struct filter *f)
+{
+	struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
+	struct {
+		struct nlmsghdr nlh;
+		struct inet_diag_req r;
+	} req = {
+		.nlh.nlmsg_len = sizeof(req),
+		.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST,
+		.nlh.nlmsg_seq = MAGIC_SEQ,
+		.r.idiag_family = AF_INET,
+		.r.idiag_states = f->states,
+	};
+	char    *bc = NULL;
+	int	bclen;
+	struct msghdr msg;
+	struct rtattr rta;
+	struct iovec iov[3];
+	int iovlen = 1;
+
+	if (protocol == IPPROTO_TCP)
+		req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
+	else if (protocol == IPPROTO_DCCP)
+		req.nlh.nlmsg_type = DCCPDIAG_GETSOCK;
+	else
+		return -1;
+
+	if (show_mem) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
+	}
+
+	if (show_tcpinfo) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
+	}
+
+	if (show_tos) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_TOS-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_TCLASS-1));
+	}
+
+	iov[0] = (struct iovec){
+		.iov_base = &req,
+		.iov_len = sizeof(req)
+	};
+	if (f->f) {
+		bclen = ssfilter_bytecompile(f->f, &bc);
+		if (bclen) {
+			rta.rta_type = INET_DIAG_REQ_BYTECODE;
+			rta.rta_len = RTA_LENGTH(bclen);
+			iov[1] = (struct iovec){ &rta, sizeof(rta) };
+			iov[2] = (struct iovec){ bc, bclen };
+			req.nlh.nlmsg_len += RTA_LENGTH(bclen);
+			iovlen = 3;
+		}
+	}
+
+	msg = (struct msghdr) {
+		.msg_name = (void *)&nladdr,
+		.msg_namelen = sizeof(nladdr),
+		.msg_iov = iov,
+		.msg_iovlen = iovlen,
+	};
+
+	if (sendmsg(fd, &msg, 0) < 0) {
+		close(fd);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int sockdiag_send(int family, int fd, int protocol, struct filter *f)
+{
+	struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
+	DIAG_REQUEST(req, struct inet_diag_req_v2 r);
+	char    *bc = NULL;
+	int	bclen;
+	__u32	proto;
+	struct msghdr msg;
+	struct rtattr rta_bc;
+	struct rtattr rta_proto;
+	struct iovec iov[5];
+	int iovlen = 1;
+
+	if (family == PF_UNSPEC)
+		return tcpdiag_send(fd, protocol, f);
+
+	memset(&req.r, 0, sizeof(req.r));
+	req.r.sdiag_family = family;
+	req.r.sdiag_protocol = protocol;
+	req.r.idiag_states = f->states;
+	if (show_mem) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_MEMINFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_SKMEMINFO-1));
+	}
+
+	if (show_tcpinfo) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_INFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_VEGASINFO-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_CONG-1));
+	}
+
+	if (show_tos) {
+		req.r.idiag_ext |= (1<<(INET_DIAG_TOS-1));
+		req.r.idiag_ext |= (1<<(INET_DIAG_TCLASS-1));
+	}
+
+	iov[0] = (struct iovec){
+		.iov_base = &req,
+		.iov_len = sizeof(req)
+	};
+	if (f->f) {
+		bclen = ssfilter_bytecompile(f->f, &bc);
+		if (bclen) {
+			rta_bc.rta_type = INET_DIAG_REQ_BYTECODE;
+			rta_bc.rta_len = RTA_LENGTH(bclen);
+			iov[1] = (struct iovec){ &rta_bc, sizeof(rta_bc) };
+			iov[2] = (struct iovec){ bc, bclen };
+			req.nlh.nlmsg_len += RTA_LENGTH(bclen);
+			iovlen = 3;
+		}
+	}
+
+	/* put extended protocol attribute, if required */
+	if (protocol > 255) {
+		rta_proto.rta_type = INET_DIAG_REQ_PROTOCOL;
+		rta_proto.rta_len = RTA_LENGTH(sizeof(proto));
+		proto = protocol;
+		iov[iovlen] = (struct iovec){ &rta_proto, sizeof(rta_proto) };
+		iov[iovlen + 1] = (struct iovec){ &proto, sizeof(proto) };
+		req.nlh.nlmsg_len += RTA_LENGTH(sizeof(proto));
+		iovlen += 2;
+	}
+
+	msg = (struct msghdr) {
+		.msg_name = (void *)&nladdr,
+		.msg_namelen = sizeof(nladdr),
+		.msg_iov = iov,
+		.msg_iovlen = iovlen,
+	};
+
+	if (sendmsg(fd, &msg, 0) < 0) {
+		close(fd);
+		return -1;
+	}
+
+	return 0;
+}
+
+struct inet_diag_arg {
+	struct filter *f;
+	int protocol;
+	struct rtnl_handle *rth;
+};
+
+static int kill_inet_sock(struct nlmsghdr *h, void *arg, struct sockstat *s)
+{
+	struct inet_diag_msg *d = NLMSG_DATA(h);
+	struct inet_diag_arg *diag_arg = arg;
+	struct rtnl_handle *rth = diag_arg->rth;
+
+	DIAG_REQUEST(req, struct inet_diag_req_v2 r);
+
+	req.nlh.nlmsg_type = SOCK_DESTROY;
+	req.nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+	req.nlh.nlmsg_seq = ++rth->seq;
+	req.r.sdiag_family = d->idiag_family;
+	req.r.sdiag_protocol = diag_arg->protocol;
+	req.r.id = d->id;
+
+	if (diag_arg->protocol == IPPROTO_RAW) {
+		struct inet_diag_req_raw *raw = (void *)&req.r;
+
+		BUILD_BUG_ON(sizeof(req.r) != sizeof(*raw));
+		raw->sdiag_raw_protocol = s->raw_prot;
+	}
+
+	return rtnl_talk(rth, &req.nlh, NULL);
+}
+
+static int show_one_inet_sock(struct nlmsghdr *h, void *arg)
+{
+	int err;
+	struct inet_diag_arg *diag_arg = arg;
+	struct inet_diag_msg *r = NLMSG_DATA(h);
+	struct sockstat s = {};
+
+	if (!(diag_arg->f->families & FAMILY_MASK(r->idiag_family)))
+		return 0;
+
+	parse_diag_msg(h, &s);
+	s.type = diag_arg->protocol;
+
+	if (diag_arg->f->f && run_ssfilter(diag_arg->f->f, &s) == 0)
+		return 0;
+
+	if (diag_arg->f->kill && kill_inet_sock(h, arg, &s) != 0) {
+		if (errno == EOPNOTSUPP || errno == ENOENT) {
+			/* Socket can't be closed, or is already closed. */
+			return 0;
+		} else {
+			perror("SOCK_DESTROY answers");
+			return -1;
+		}
+	}
+
+	err = inet_show_sock(h, &s);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int inet_show_netlink(struct filter *f, FILE *dump_fp, int protocol)
+{
+	int err = 0;
+	struct rtnl_handle rth, rth2;
+	int family = PF_INET;
+	struct inet_diag_arg arg = { .f = f, .protocol = protocol };
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
+		return -1;
+
+	if (f->kill) {
+		if (rtnl_open_byproto(&rth2, 0, NETLINK_SOCK_DIAG)) {
+			rtnl_close(&rth);
+			return -1;
+		}
+		arg.rth = &rth2;
+	}
+
+	rth.dump = MAGIC_SEQ;
+	rth.dump_fp = dump_fp;
+	if (preferred_family == PF_INET6)
+		family = PF_INET6;
+
+	/* extended protocol will use INET_DIAG_REQ_PROTOCOL,
+	 * not supported by older kernels. On such kernel
+	 * rtnl_dump will bail with rtnl_dump_error().
+	 * Suppress the error to avoid confusing the user
+	 */
+	if (protocol > 255)
+		rth.flags |= RTNL_HANDLE_F_SUPPRESS_NLERR;
+
+again:
+	if ((err = sockdiag_send(family, rth.fd, protocol, f)))
+		goto Exit;
+
+	if ((err = rtnl_dump_filter(&rth, show_one_inet_sock, &arg))) {
+		if (family != PF_UNSPEC) {
+			family = PF_UNSPEC;
+			goto again;
+		}
+		goto Exit;
+	}
+	if (family == PF_INET && preferred_family != PF_INET) {
+		family = PF_INET6;
+		goto again;
+	}
+
+Exit:
+	rtnl_close(&rth);
+	if (arg.rth)
+		rtnl_close(arg.rth);
+	return err;
+}
+
+static int tcp_show_netlink_file(struct filter *f)
+{
+	FILE	*fp;
+	char	buf[16384];
+	int	err = -1;
+
+	if ((fp = fopen(getenv("TCPDIAG_FILE"), "r")) == NULL) {
+		perror("fopen($TCPDIAG_FILE)");
+		return err;
+	}
+
+	while (1) {
+		int err2;
+		size_t status, nitems;
+		struct nlmsghdr *h = (struct nlmsghdr *)buf;
+		struct sockstat s = {};
+
+		status = fread(buf, 1, sizeof(*h), fp);
+		if (status != sizeof(*h)) {
+			if (ferror(fp))
+				perror("Reading header from $TCPDIAG_FILE");
+			if (feof(fp))
+				fprintf(stderr, "Unexpected EOF reading $TCPDIAG_FILE");
+			break;
+		}
+
+		nitems = NLMSG_ALIGN(h->nlmsg_len - sizeof(*h));
+		status = fread(h+1, 1, nitems, fp);
+
+		if (status != nitems) {
+			if (ferror(fp))
+				perror("Reading $TCPDIAG_FILE");
+			if (feof(fp))
+				fprintf(stderr, "Unexpected EOF reading $TCPDIAG_FILE");
+			break;
+		}
+
+		/* The only legal exit point */
+		if (h->nlmsg_type == NLMSG_DONE) {
+			err = 0;
+			break;
+		}
+
+		if (h->nlmsg_type == NLMSG_ERROR) {
+			struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
+
+			if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
+				fprintf(stderr, "ERROR truncated\n");
+			} else {
+				errno = -err->error;
+				perror("TCPDIAG answered");
+			}
+			break;
+		}
+
+		parse_diag_msg(h, &s);
+		s.type = IPPROTO_TCP;
+
+		if (f && f->f && run_ssfilter(f->f, &s) == 0)
+			continue;
+
+		err2 = inet_show_sock(h, &s);
+		if (err2 < 0) {
+			err = err2;
+			break;
+		}
+	}
+
+	fclose(fp);
+	return err;
+}
+
+static int tcp_show(struct filter *f)
+{
+	FILE *fp = NULL;
+	char *buf = NULL;
+	int bufsize = 1024*1024;
+
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	dg_proto = TCP_PROTO;
+
+	if (getenv("TCPDIAG_FILE"))
+		return tcp_show_netlink_file(f);
+
+	if (!getenv("PROC_NET_TCP") && !getenv("PROC_ROOT")
+	    && inet_show_netlink(f, NULL, IPPROTO_TCP) == 0)
+		return 0;
+
+	/* Sigh... We have to parse /proc/net/tcp... */
+	while (bufsize >= 64*1024) {
+		if ((buf = malloc(bufsize)) != NULL)
+			break;
+		bufsize /= 2;
+	}
+	if (buf == NULL) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	if (f->families & FAMILY_MASK(AF_INET)) {
+		if ((fp = net_tcp_open()) == NULL)
+			goto outerr;
+
+		setbuffer(fp, buf, bufsize);
+		if (generic_record_read(fp, tcp_show_line, f, AF_INET))
+			goto outerr;
+		fclose(fp);
+	}
+
+	if ((f->families & FAMILY_MASK(AF_INET6)) &&
+	    (fp = net_tcp6_open()) != NULL) {
+		setbuffer(fp, buf, bufsize);
+		if (generic_record_read(fp, tcp_show_line, f, AF_INET6))
+			goto outerr;
+		fclose(fp);
+	}
+
+	free(buf);
+	return 0;
+
+outerr:
+	do {
+		int saved_errno = errno;
+
+		free(buf);
+		if (fp)
+			fclose(fp);
+		errno = saved_errno;
+		return -1;
+	} while (0);
+}
+
+static int mptcp_show(struct filter *f)
+{
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	if (!getenv("PROC_NET_MPTCP") && !getenv("PROC_ROOT")
+	    && inet_show_netlink(f, NULL, IPPROTO_MPTCP) == 0)
+		return 0;
+
+	return 0;
+}
+
+static int dccp_show(struct filter *f)
+{
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	if (!getenv("PROC_NET_DCCP") && !getenv("PROC_ROOT")
+	    && inet_show_netlink(f, NULL, IPPROTO_DCCP) == 0)
+		return 0;
+
+	return 0;
+}
+
+static int sctp_show(struct filter *f)
+{
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	if (!getenv("PROC_NET_SCTP") && !getenv("PROC_ROOT")
+	    && inet_show_netlink(f, NULL, IPPROTO_SCTP) == 0)
+		return 0;
+
+	return 0;
+}
+
+static int dgram_show_line(char *line, const struct filter *f, int family)
+{
+	struct sockstat s = {};
+	char *loc, *rem, *data;
+	char opt[256];
+	int n;
+
+	if (proc_inet_split_line(line, &loc, &rem, &data))
+		return -1;
+
+	int state = (data[1] >= 'A') ? (data[1] - 'A' + 10) : (data[1] - '0');
+
+	if (!(f->states & (1 << state)))
+		return 0;
+
+	proc_parse_inet_addr(loc, rem, family, &s);
+
+	if (f->f && run_ssfilter(f->f, &s) == 0)
+		return 0;
+
+	opt[0] = 0;
+	n = sscanf(data, "%x %x:%x %*x:%*x %*x %d %*d %u %d %llx %[^\n]\n",
+	       &s.state, &s.wq, &s.rq,
+	       &s.uid, &s.ino,
+	       &s.refcnt, &s.sk, opt);
+
+	if (n < 9)
+		opt[0] = 0;
+
+	s.type = dg_proto == UDP_PROTO ? IPPROTO_UDP : 0;
+	inet_stats_print(&s, false);
+
+	if (show_details && opt[0])
+		out(" opt:\"%s\"", opt);
+
+	return 0;
+}
+
+static int udp_show(struct filter *f)
+{
+	FILE *fp = NULL;
+
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	dg_proto = UDP_PROTO;
+
+	if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
+	    && inet_show_netlink(f, NULL, IPPROTO_UDP) == 0)
+		return 0;
+
+	if (f->families&FAMILY_MASK(AF_INET)) {
+		if ((fp = net_udp_open()) == NULL)
+			goto outerr;
+		if (generic_record_read(fp, dgram_show_line, f, AF_INET))
+			goto outerr;
+		fclose(fp);
+	}
+
+	if ((f->families&FAMILY_MASK(AF_INET6)) &&
+	    (fp = net_udp6_open()) != NULL) {
+		if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
+			goto outerr;
+		fclose(fp);
+	}
+	return 0;
+
+outerr:
+	do {
+		int saved_errno = errno;
+
+		if (fp)
+			fclose(fp);
+		errno = saved_errno;
+		return -1;
+	} while (0);
+}
+
+static int raw_show(struct filter *f)
+{
+	FILE *fp = NULL;
+
+	if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
+		return 0;
+
+	dg_proto = RAW_PROTO;
+
+	if (!getenv("PROC_NET_RAW") && !getenv("PROC_ROOT") &&
+	    inet_show_netlink(f, NULL, IPPROTO_RAW) == 0)
+		return 0;
+
+	if (f->families&FAMILY_MASK(AF_INET)) {
+		if ((fp = net_raw_open()) == NULL)
+			goto outerr;
+		if (generic_record_read(fp, dgram_show_line, f, AF_INET))
+			goto outerr;
+		fclose(fp);
+	}
+
+	if ((f->families&FAMILY_MASK(AF_INET6)) &&
+	    (fp = net_raw6_open()) != NULL) {
+		if (generic_record_read(fp, dgram_show_line, f, AF_INET6))
+			goto outerr;
+		fclose(fp);
+	}
+	return 0;
+
+outerr:
+	do {
+		int saved_errno = errno;
+
+		if (fp)
+			fclose(fp);
+		errno = saved_errno;
+		return -1;
+	} while (0);
+}
+
+#define MAX_UNIX_REMEMBER (1024*1024/sizeof(struct sockstat))
+
+static void unix_list_drop_first(struct sockstat **list)
+{
+	struct sockstat *s = *list;
+
+	(*list) = (*list)->next;
+	free(s->name);
+	free(s);
+}
+
+static bool unix_type_skip(struct sockstat *s, struct filter *f)
+{
+	if (s->type == SOCK_STREAM && !(f->dbs&(1<<UNIX_ST_DB)))
+		return true;
+	if (s->type == SOCK_DGRAM && !(f->dbs&(1<<UNIX_DG_DB)))
+		return true;
+	if (s->type == SOCK_SEQPACKET && !(f->dbs&(1<<UNIX_SQ_DB)))
+		return true;
+	return false;
+}
+
+static void unix_stats_print(struct sockstat *s, struct filter *f)
+{
+	char port_name[30] = {};
+
+	sock_state_print(s);
+
+	sock_addr_print(s->name ?: "*", " ",
+			uint_to_str(s->lport, port_name), NULL);
+	sock_addr_print(s->peer_name ?: "*", " ",
+			uint_to_str(s->rport, port_name), NULL);
+
+	proc_ctx_print(s);
+}
+
+static int unix_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct filter *f = (struct filter *)arg;
+	struct unix_diag_msg *r = NLMSG_DATA(nlh);
+	struct rtattr *tb[UNIX_DIAG_MAX+1];
+	char name[128];
+	struct sockstat stat = { .name = "*", .peer_name = "*" };
+
+	parse_rtattr(tb, UNIX_DIAG_MAX, (struct rtattr *)(r+1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+
+	stat.type  = r->udiag_type;
+	stat.state = r->udiag_state;
+	stat.ino   = stat.lport = r->udiag_ino;
+	stat.local.family = stat.remote.family = AF_UNIX;
+
+	if (unix_type_skip(&stat, f))
+		return 0;
+
+	if (tb[UNIX_DIAG_RQLEN]) {
+		struct unix_diag_rqlen *rql = RTA_DATA(tb[UNIX_DIAG_RQLEN]);
+
+		stat.rq = rql->udiag_rqueue;
+		stat.wq = rql->udiag_wqueue;
+	}
+	if (tb[UNIX_DIAG_NAME]) {
+		int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
+
+		memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
+		name[len] = '\0';
+		if (name[0] == '\0') {
+			int i;
+			for (i = 0; i < len; i++)
+				if (name[i] == '\0')
+					name[i] = '@';
+		}
+		stat.name = &name[0];
+		memcpy(stat.local.data, &stat.name, sizeof(stat.name));
+	}
+	if (tb[UNIX_DIAG_PEER])
+		stat.rport = rta_getattr_u32(tb[UNIX_DIAG_PEER]);
+
+	if (f->f && run_ssfilter(f->f, &stat) == 0)
+		return 0;
+
+	unix_stats_print(&stat, f);
+
+	if (show_mem)
+		print_skmeminfo(tb, UNIX_DIAG_MEMINFO);
+	if (show_details) {
+		if (tb[UNIX_DIAG_SHUTDOWN]) {
+			unsigned char mask;
+
+			mask = rta_getattr_u8(tb[UNIX_DIAG_SHUTDOWN]);
+			out(" %c-%c",
+			    mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
+		}
+		if (tb[UNIX_DIAG_VFS]) {
+			struct unix_diag_vfs *uv = RTA_DATA(tb[UNIX_DIAG_VFS]);
+
+			out(" ino:%u dev:%u/%u", uv->udiag_vfs_ino, major(uv->udiag_vfs_dev),
+						 minor(uv->udiag_vfs_dev));
+		}
+		if (tb[UNIX_DIAG_ICONS]) {
+			int len = RTA_PAYLOAD(tb[UNIX_DIAG_ICONS]);
+			__u32 *peers = RTA_DATA(tb[UNIX_DIAG_ICONS]);
+			int i;
+
+			out(" peers:");
+			for (i = 0; i < len / sizeof(__u32); i++)
+				out(" %u", peers[i]);
+		}
+	}
+
+	return 0;
+}
+
+static int handle_netlink_request(struct filter *f, struct nlmsghdr *req,
+		size_t size, rtnl_filter_t show_one_sock)
+{
+	int ret = -1;
+	struct rtnl_handle rth;
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_SOCK_DIAG))
+		return -1;
+
+	rth.dump = MAGIC_SEQ;
+
+	if (rtnl_send(&rth, req, size) < 0)
+		goto Exit;
+
+	if (rtnl_dump_filter(&rth, show_one_sock, f))
+		goto Exit;
+
+	ret = 0;
+Exit:
+	rtnl_close(&rth);
+	return ret;
+}
+
+static int unix_show_netlink(struct filter *f)
+{
+	DIAG_REQUEST(req, struct unix_diag_req r);
+
+	req.r.sdiag_family = AF_UNIX;
+	req.r.udiag_states = f->states;
+	req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
+	if (show_mem)
+		req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
+	if (show_details)
+		req.r.udiag_show |= UDIAG_SHOW_VFS | UDIAG_SHOW_ICONS;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
+}
+
+static int unix_show(struct filter *f)
+{
+	FILE *fp;
+	char buf[256];
+	char name[128];
+	int  newformat = 0;
+	int  cnt;
+	struct sockstat *list = NULL;
+	const int unix_state_map[] = { SS_CLOSE, SS_SYN_SENT,
+				       SS_ESTABLISHED, SS_CLOSING };
+
+	if (!filter_af_get(f, AF_UNIX))
+		return 0;
+
+	if (!getenv("PROC_NET_UNIX") && !getenv("PROC_ROOT")
+	    && unix_show_netlink(f) == 0)
+		return 0;
+
+	if ((fp = net_unix_open()) == NULL)
+		return -1;
+	if (!fgets(buf, sizeof(buf), fp)) {
+		fclose(fp);
+		return -1;
+	}
+
+	if (memcmp(buf, "Peer", 4) == 0)
+		newformat = 1;
+	cnt = 0;
+
+	while (fgets(buf, sizeof(buf), fp)) {
+		struct sockstat *u, **insp;
+		int flags;
+
+		if (!(u = calloc(1, sizeof(*u))))
+			break;
+
+		if (sscanf(buf, "%x: %x %x %x %x %x %d %s",
+			   &u->rport, &u->rq, &u->wq, &flags, &u->type,
+			   &u->state, &u->ino, name) < 8)
+			name[0] = 0;
+
+		u->lport = u->ino;
+		u->local.family = u->remote.family = AF_UNIX;
+
+		if (flags & (1 << 16)) {
+			u->state = SS_LISTEN;
+		} else if (u->state > 0 &&
+			   u->state <= ARRAY_SIZE(unix_state_map)) {
+			u->state = unix_state_map[u->state-1];
+			if (u->type == SOCK_DGRAM && u->state == SS_CLOSE && u->rport)
+				u->state = SS_ESTABLISHED;
+		}
+		if (unix_type_skip(u, f) ||
+		    !(f->states & (1 << u->state))) {
+			free(u);
+			continue;
+		}
+
+		if (!newformat) {
+			u->rport = 0;
+			u->rq = 0;
+			u->wq = 0;
+		}
+
+		if (name[0]) {
+			u->name = strdup(name);
+			if (!u->name) {
+				free(u);
+				break;
+			}
+		}
+
+		if (u->rport) {
+			struct sockstat *p;
+
+			for (p = list; p; p = p->next) {
+				if (u->rport == p->lport)
+					break;
+			}
+			if (!p)
+				u->peer_name = "?";
+			else
+				u->peer_name = p->name ? : "*";
+		}
+
+		if (f->f) {
+			struct sockstat st = {
+				.local.family = AF_UNIX,
+				.remote.family = AF_UNIX,
+			};
+
+			memcpy(st.local.data, &u->name, sizeof(u->name));
+			/* when parsing the old format rport is set to 0 and
+			 * therefore peer_name remains NULL
+			 */
+			if (u->peer_name && strcmp(u->peer_name, "*"))
+				memcpy(st.remote.data, &u->peer_name,
+				       sizeof(u->peer_name));
+			if (run_ssfilter(f->f, &st) == 0) {
+				free(u->name);
+				free(u);
+				continue;
+			}
+		}
+
+		insp = &list;
+		while (*insp) {
+			if (u->type < (*insp)->type ||
+			    (u->type == (*insp)->type &&
+			     u->ino < (*insp)->ino))
+				break;
+			insp = &(*insp)->next;
+		}
+		u->next = *insp;
+		*insp = u;
+
+		if (++cnt > MAX_UNIX_REMEMBER) {
+			while (list) {
+				unix_stats_print(list, f);
+				unix_list_drop_first(&list);
+			}
+			cnt = 0;
+		}
+	}
+	fclose(fp);
+	while (list) {
+		unix_stats_print(list, f);
+		unix_list_drop_first(&list);
+	}
+
+	return 0;
+}
+
+static int packet_stats_print(struct sockstat *s, const struct filter *f)
+{
+	const char *addr, *port;
+	char ll_name[16];
+
+	s->local.family = s->remote.family = AF_PACKET;
+
+	if (f->f) {
+		s->local.data[0] = s->prot;
+		if (run_ssfilter(f->f, s) == 0)
+			return 1;
+	}
+
+	sock_state_print(s);
+
+	if (s->prot == 3)
+		addr = "*";
+	else
+		addr = ll_proto_n2a(htons(s->prot), ll_name, sizeof(ll_name));
+
+	if (s->iface == 0)
+		port = "*";
+	else
+		port = xll_index_to_name(s->iface);
+
+	sock_addr_print(addr, ":", port, NULL);
+	sock_addr_print("", "*", "", NULL);
+
+	proc_ctx_print(s);
+
+	if (show_details)
+		sock_details_print(s);
+
+	return 0;
+}
+
+static void packet_show_ring(struct packet_diag_ring *ring)
+{
+	out("blk_size:%d", ring->pdr_block_size);
+	out(",blk_nr:%d", ring->pdr_block_nr);
+	out(",frm_size:%d", ring->pdr_frame_size);
+	out(",frm_nr:%d", ring->pdr_frame_nr);
+	out(",tmo:%d", ring->pdr_retire_tmo);
+	out(",features:0x%x", ring->pdr_features);
+}
+
+static int packet_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	const struct filter *f = arg;
+	struct packet_diag_msg *r = NLMSG_DATA(nlh);
+	struct packet_diag_info *pinfo = NULL;
+	struct packet_diag_ring *ring_rx = NULL, *ring_tx = NULL;
+	struct rtattr *tb[PACKET_DIAG_MAX+1];
+	struct sockstat stat = {};
+	uint32_t fanout = 0;
+	bool has_fanout = false;
+
+	parse_rtattr(tb, PACKET_DIAG_MAX, (struct rtattr *)(r+1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+
+	/* use /proc/net/packet if all info are not available */
+	if (!tb[PACKET_DIAG_MEMINFO])
+		return -1;
+
+	stat.type   = r->pdiag_type;
+	stat.prot   = r->pdiag_num;
+	stat.ino    = r->pdiag_ino;
+	stat.state  = SS_CLOSE;
+	stat.sk	    = cookie_sk_get(&r->pdiag_cookie[0]);
+
+	if (tb[PACKET_DIAG_MEMINFO]) {
+		__u32 *skmeminfo = RTA_DATA(tb[PACKET_DIAG_MEMINFO]);
+
+		stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
+	}
+
+	if (tb[PACKET_DIAG_INFO]) {
+		pinfo = RTA_DATA(tb[PACKET_DIAG_INFO]);
+		stat.lport = stat.iface = pinfo->pdi_index;
+	}
+
+	if (tb[PACKET_DIAG_UID])
+		stat.uid = rta_getattr_u32(tb[PACKET_DIAG_UID]);
+
+	if (tb[PACKET_DIAG_RX_RING])
+		ring_rx = RTA_DATA(tb[PACKET_DIAG_RX_RING]);
+
+	if (tb[PACKET_DIAG_TX_RING])
+		ring_tx = RTA_DATA(tb[PACKET_DIAG_TX_RING]);
+
+	if (tb[PACKET_DIAG_FANOUT]) {
+		has_fanout = true;
+		fanout = rta_getattr_u32(tb[PACKET_DIAG_FANOUT]);
+	}
+
+	if (packet_stats_print(&stat, f))
+		return 0;
+
+	if (show_details) {
+		if (pinfo) {
+			if (oneline)
+				out(" ver:%d", pinfo->pdi_version);
+			else
+				out("\n\tver:%d", pinfo->pdi_version);
+			out(" cpy_thresh:%d", pinfo->pdi_copy_thresh);
+			out(" flags( ");
+			if (pinfo->pdi_flags & PDI_RUNNING)
+				out("running");
+			if (pinfo->pdi_flags & PDI_AUXDATA)
+				out(" auxdata");
+			if (pinfo->pdi_flags & PDI_ORIGDEV)
+				out(" origdev");
+			if (pinfo->pdi_flags & PDI_VNETHDR)
+				out(" vnethdr");
+			if (pinfo->pdi_flags & PDI_LOSS)
+				out(" loss");
+			if (!pinfo->pdi_flags)
+				out("0");
+			out(" )");
+		}
+		if (ring_rx) {
+			if (oneline)
+				out(" ring_rx(");
+			else
+				out("\n\tring_rx(");
+			packet_show_ring(ring_rx);
+			out(")");
+		}
+		if (ring_tx) {
+			if (oneline)
+				out(" ring_tx(");
+			else
+				out("\n\tring_tx(");
+			packet_show_ring(ring_tx);
+			out(")");
+		}
+		if (has_fanout) {
+			uint16_t type = (fanout >> 16) & 0xffff;
+
+			if (oneline)
+				out(" fanout(");
+			else
+				out("\n\tfanout(");
+			out("id:%d,", fanout & 0xffff);
+			out("type:");
+
+			if (type == 0)
+				out("hash");
+			else if (type == 1)
+				out("lb");
+			else if (type == 2)
+				out("cpu");
+			else if (type == 3)
+				out("roll");
+			else if (type == 4)
+				out("random");
+			else if (type == 5)
+				out("qm");
+			else
+				out("0x%x", type);
+
+			out(")");
+		}
+	}
+
+	if (show_bpf && tb[PACKET_DIAG_FILTER]) {
+		struct sock_filter *fil =
+		       RTA_DATA(tb[PACKET_DIAG_FILTER]);
+		int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
+			  sizeof(struct sock_filter);
+
+		if (oneline)
+			out(" bpf filter (%d): ", num);
+		else
+			out("\n\tbpf filter (%d): ", num);
+		while (num) {
+			out(" 0x%02x %u %u %u,",
+			    fil->code, fil->jt, fil->jf, fil->k);
+			num--;
+			fil++;
+		}
+	}
+
+	if (show_mem)
+		print_skmeminfo(tb, PACKET_DIAG_MEMINFO);
+	return 0;
+}
+
+static int packet_show_netlink(struct filter *f)
+{
+	DIAG_REQUEST(req, struct packet_diag_req r);
+
+	req.r.sdiag_family = AF_PACKET;
+	req.r.pdiag_show = PACKET_SHOW_INFO | PACKET_SHOW_MEMINFO |
+		PACKET_SHOW_FILTER | PACKET_SHOW_RING_CFG | PACKET_SHOW_FANOUT;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), packet_show_sock);
+}
+
+static int packet_show_line(char *buf, const struct filter *f, int fam)
+{
+	unsigned long long sk;
+	struct sockstat stat = {};
+	int type, prot, iface, state, rq, uid, ino;
+
+	sscanf(buf, "%llx %*d %d %x %d %d %u %u %u",
+			&sk,
+			&type, &prot, &iface, &state,
+			&rq, &uid, &ino);
+
+	if (type == SOCK_RAW && !(f->dbs & (1<<PACKET_R_DB)))
+		return 0;
+	if (type == SOCK_DGRAM && !(f->dbs & (1<<PACKET_DG_DB)))
+		return 0;
+
+	stat.type  = type;
+	stat.prot  = prot;
+	stat.lport = stat.iface = iface;
+	stat.state = state;
+	stat.rq    = rq;
+	stat.uid   = uid;
+	stat.ino   = ino;
+	stat.state = SS_CLOSE;
+
+	if (packet_stats_print(&stat, f))
+		return 0;
+
+	return 0;
+}
+
+static int packet_show(struct filter *f)
+{
+	FILE *fp;
+	int rc = 0;
+
+	if (!filter_af_get(f, AF_PACKET) || !(f->states & (1 << SS_CLOSE)))
+		return 0;
+
+	if (!getenv("PROC_NET_PACKET") && !getenv("PROC_ROOT") &&
+			packet_show_netlink(f) == 0)
+		return 0;
+
+	if ((fp = net_packet_open()) == NULL)
+		return -1;
+	if (generic_record_read(fp, packet_show_line, f, AF_PACKET))
+		rc = -1;
+
+	fclose(fp);
+	return rc;
+}
+
+static int xdp_stats_print(struct sockstat *s, const struct filter *f)
+{
+	const char *addr, *port;
+	char q_str[16];
+
+	s->local.family = s->remote.family = AF_XDP;
+
+	if (f->f) {
+		if (run_ssfilter(f->f, s) == 0)
+			return 1;
+	}
+
+	sock_state_print(s);
+
+	if (s->iface) {
+		addr = xll_index_to_name(s->iface);
+		snprintf(q_str, sizeof(q_str), "q%d", s->lport);
+		port = q_str;
+		sock_addr_print(addr, ":", port, NULL);
+	} else {
+		sock_addr_print("", "*", "", NULL);
+	}
+
+	sock_addr_print("", "*", "", NULL);
+
+	proc_ctx_print(s);
+
+	if (show_details)
+		sock_details_print(s);
+
+	return 0;
+}
+
+static void xdp_show_ring(const char *name, struct xdp_diag_ring *ring)
+{
+	if (oneline)
+		out(" %s(", name);
+	else
+		out("\n\t%s(", name);
+	out("entries:%u", ring->entries);
+	out(")");
+}
+
+static void xdp_show_umem(struct xdp_diag_umem *umem, struct xdp_diag_ring *fr,
+			  struct xdp_diag_ring *cr)
+{
+	if (oneline)
+		out(" tumem(");
+	else
+		out("\n\tumem(");
+	out("id:%u", umem->id);
+	out(",size:%llu", umem->size);
+	out(",num_pages:%u", umem->num_pages);
+	out(",chunk_size:%u", umem->chunk_size);
+	out(",headroom:%u", umem->headroom);
+	out(",ifindex:%u", umem->ifindex);
+	out(",qid:%u", umem->queue_id);
+	out(",zc:%u", umem->flags & XDP_DU_F_ZEROCOPY);
+	out(",refs:%u", umem->refs);
+	out(")");
+
+	if (fr)
+		xdp_show_ring("fr", fr);
+	if (cr)
+		xdp_show_ring("cr", cr);
+}
+
+static void xdp_show_stats(struct xdp_diag_stats *stats)
+{
+	if (oneline)
+		out(" stats(");
+	else
+		out("\n\tstats(");
+	out("rx dropped:%llu", stats->n_rx_dropped);
+	out(",rx invalid:%llu", stats->n_rx_invalid);
+	out(",rx queue full:%llu", stats->n_rx_full);
+	out(",rx fill ring empty:%llu", stats->n_fill_ring_empty);
+	out(",tx invalid:%llu", stats->n_tx_invalid);
+	out(",tx ring empty:%llu", stats->n_tx_ring_empty);
+	out(")");
+}
+
+static int xdp_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct xdp_diag_ring *rx = NULL, *tx = NULL, *fr = NULL, *cr = NULL;
+	struct xdp_diag_msg *msg = NLMSG_DATA(nlh);
+	struct rtattr *tb[XDP_DIAG_MAX + 1];
+	struct xdp_diag_info *info = NULL;
+	struct xdp_diag_umem *umem = NULL;
+	struct xdp_diag_stats *stats = NULL;
+	const struct filter *f = arg;
+	struct sockstat stat = {};
+
+	parse_rtattr(tb, XDP_DIAG_MAX, (struct rtattr *)(msg + 1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*msg)));
+
+	stat.type = msg->xdiag_type;
+	stat.ino = msg->xdiag_ino;
+	stat.state = SS_CLOSE;
+	stat.sk = cookie_sk_get(&msg->xdiag_cookie[0]);
+
+	if (tb[XDP_DIAG_INFO]) {
+		info = RTA_DATA(tb[XDP_DIAG_INFO]);
+		stat.iface = info->ifindex;
+		stat.lport = info->queue_id;
+	}
+
+	if (tb[XDP_DIAG_UID])
+		stat.uid = rta_getattr_u32(tb[XDP_DIAG_UID]);
+	if (tb[XDP_DIAG_RX_RING])
+		rx = RTA_DATA(tb[XDP_DIAG_RX_RING]);
+	if (tb[XDP_DIAG_TX_RING])
+		tx = RTA_DATA(tb[XDP_DIAG_TX_RING]);
+	if (tb[XDP_DIAG_UMEM])
+		umem = RTA_DATA(tb[XDP_DIAG_UMEM]);
+	if (tb[XDP_DIAG_UMEM_FILL_RING])
+		fr = RTA_DATA(tb[XDP_DIAG_UMEM_FILL_RING]);
+	if (tb[XDP_DIAG_UMEM_COMPLETION_RING])
+		cr = RTA_DATA(tb[XDP_DIAG_UMEM_COMPLETION_RING]);
+	if (tb[XDP_DIAG_MEMINFO]) {
+		__u32 *skmeminfo = RTA_DATA(tb[XDP_DIAG_MEMINFO]);
+
+		stat.rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
+	}
+	if (tb[XDP_DIAG_STATS])
+		stats = RTA_DATA(tb[XDP_DIAG_STATS]);
+
+	if (xdp_stats_print(&stat, f))
+		return 0;
+
+	if (show_details) {
+		if (rx)
+			xdp_show_ring("rx", rx);
+		if (tx)
+			xdp_show_ring("tx", tx);
+		if (umem)
+			xdp_show_umem(umem, fr, cr);
+		if (stats)
+			xdp_show_stats(stats);
+	}
+
+	if (show_mem)
+		print_skmeminfo(tb, XDP_DIAG_MEMINFO); // really?
+
+
+	return 0;
+}
+
+static int xdp_show(struct filter *f)
+{
+	DIAG_REQUEST(req, struct xdp_diag_req r);
+
+	if (!filter_af_get(f, AF_XDP) || !(f->states & (1 << SS_CLOSE)))
+		return 0;
+
+	req.r.sdiag_family = AF_XDP;
+	req.r.xdiag_show = XDP_SHOW_INFO | XDP_SHOW_RING_CFG | XDP_SHOW_UMEM |
+			   XDP_SHOW_MEMINFO | XDP_SHOW_STATS;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), xdp_show_sock);
+}
+
+static int netlink_show_one(struct filter *f,
+				int prot, int pid, unsigned int groups,
+				int state, int dst_pid, unsigned int dst_group,
+				int rq, int wq,
+				unsigned long long sk, unsigned long long cb)
+{
+	struct sockstat st = {
+		.state		= SS_CLOSE,
+		.rq		= rq,
+		.wq		= wq,
+		.local.family	= AF_NETLINK,
+		.remote.family	= AF_NETLINK,
+	};
+
+	SPRINT_BUF(prot_buf) = {};
+	const char *prot_name;
+	char procname[64] = {};
+
+	if (f->f) {
+		st.rport = -1;
+		st.lport = pid;
+		st.local.data[0] = prot;
+		if (run_ssfilter(f->f, &st) == 0)
+			return 1;
+	}
+
+	sock_state_print(&st);
+
+	prot_name = nl_proto_n2a(prot, prot_buf, sizeof(prot_buf));
+
+	if (pid == -1) {
+		procname[0] = '*';
+	} else if (!numeric) {
+		int done = 0;
+
+		if (!pid) {
+			done = 1;
+			strncpy(procname, "kernel", 7);
+		} else if (pid > 0) {
+			FILE *fp;
+
+			snprintf(procname, sizeof(procname), "%s/%d/stat",
+				getenv("PROC_ROOT") ? : "/proc", pid);
+			if ((fp = fopen(procname, "r")) != NULL) {
+				if (fscanf(fp, "%*d (%[^)])", procname) == 1) {
+					snprintf(procname+strlen(procname),
+						sizeof(procname)-strlen(procname),
+						"/%d", pid);
+					done = 1;
+				}
+				fclose(fp);
+			}
+		}
+		if (!done)
+			int_to_str(pid, procname);
+	} else {
+		int_to_str(pid, procname);
+	}
+
+	sock_addr_print(prot_name, ":", procname, NULL);
+
+	if (state == NETLINK_CONNECTED) {
+		char dst_group_buf[30];
+		char dst_pid_buf[30];
+
+		sock_addr_print(int_to_str(dst_group, dst_group_buf), ":",
+				int_to_str(dst_pid, dst_pid_buf), NULL);
+	} else {
+		sock_addr_print("", "*", "", NULL);
+	}
+
+	char *pid_context = NULL;
+
+	if (show_proc_ctx) {
+		/* The pid value will either be:
+		 *   0 if destination kernel - show kernel initial context.
+		 *   A valid process pid - use getpidcon.
+		 *   A unique value allocated by the kernel or netlink user
+		 *   to the process - show context as "not available".
+		 */
+		if (!pid)
+			security_get_initial_context("kernel", &pid_context);
+		else if (pid > 0)
+			getpidcon(pid, &pid_context);
+
+		out(" proc_ctx=%s", pid_context ? : "unavailable");
+		freecon(pid_context);
+	}
+
+	if (show_details) {
+		out(" sk=%llx cb=%llx groups=0x%08x", sk, cb, groups);
+	}
+
+	return 0;
+}
+
+static int netlink_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct filter *f = (struct filter *)arg;
+	struct netlink_diag_msg *r = NLMSG_DATA(nlh);
+	struct rtattr *tb[NETLINK_DIAG_MAX+1];
+	int rq = 0, wq = 0;
+	unsigned long groups = 0;
+
+	parse_rtattr(tb, NETLINK_DIAG_MAX, (struct rtattr *)(r+1),
+		     nlh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+
+	if (tb[NETLINK_DIAG_GROUPS] && RTA_PAYLOAD(tb[NETLINK_DIAG_GROUPS]))
+		groups = *(unsigned long *) RTA_DATA(tb[NETLINK_DIAG_GROUPS]);
+
+	if (tb[NETLINK_DIAG_MEMINFO]) {
+		const __u32 *skmeminfo;
+
+		skmeminfo = RTA_DATA(tb[NETLINK_DIAG_MEMINFO]);
+
+		rq = skmeminfo[SK_MEMINFO_RMEM_ALLOC];
+		wq = skmeminfo[SK_MEMINFO_WMEM_ALLOC];
+	}
+
+	if (netlink_show_one(f, r->ndiag_protocol, r->ndiag_portid, groups,
+			 r->ndiag_state, r->ndiag_dst_portid, r->ndiag_dst_group,
+			 rq, wq, 0, 0)) {
+		return 0;
+	}
+
+	if (show_mem) {
+		out("\t");
+		print_skmeminfo(tb, NETLINK_DIAG_MEMINFO);
+	}
+
+	return 0;
+}
+
+static int netlink_show_netlink(struct filter *f)
+{
+	DIAG_REQUEST(req, struct netlink_diag_req r);
+
+	req.r.sdiag_family = AF_NETLINK;
+	req.r.sdiag_protocol = NDIAG_PROTO_ALL;
+	req.r.ndiag_show = NDIAG_SHOW_GROUPS | NDIAG_SHOW_MEMINFO;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), netlink_show_sock);
+}
+
+static int netlink_show(struct filter *f)
+{
+	FILE *fp;
+	char buf[256];
+	int prot, pid;
+	unsigned int groups;
+	int rq, wq, rc;
+	unsigned long long sk, cb;
+
+	if (!filter_af_get(f, AF_NETLINK) || !(f->states & (1 << SS_CLOSE)))
+		return 0;
+
+	if (!getenv("PROC_NET_NETLINK") && !getenv("PROC_ROOT") &&
+		netlink_show_netlink(f) == 0)
+		return 0;
+
+	if ((fp = net_netlink_open()) == NULL)
+		return -1;
+	if (!fgets(buf, sizeof(buf), fp)) {
+		fclose(fp);
+		return -1;
+	}
+
+	while (fgets(buf, sizeof(buf), fp)) {
+		sscanf(buf, "%llx %d %d %x %d %d %llx %d",
+		       &sk,
+		       &prot, &pid, &groups, &rq, &wq, &cb, &rc);
+
+		netlink_show_one(f, prot, pid, groups, 0, 0, 0, rq, wq, sk, cb);
+	}
+
+	fclose(fp);
+	return 0;
+}
+
+static bool vsock_type_skip(struct sockstat *s, struct filter *f)
+{
+	if (s->type == SOCK_STREAM && !(f->dbs & (1 << VSOCK_ST_DB)))
+		return true;
+	if (s->type == SOCK_DGRAM && !(f->dbs & (1 << VSOCK_DG_DB)))
+		return true;
+	return false;
+}
+
+static void vsock_addr_print(inet_prefix *a, __u32 port)
+{
+	char cid_str[sizeof("4294967295")];
+	char port_str[sizeof("4294967295")];
+	__u32 cid;
+
+	memcpy(&cid, a->data, sizeof(cid));
+
+	if (cid == ~(__u32)0)
+		snprintf(cid_str, sizeof(cid_str), "*");
+	else
+		snprintf(cid_str, sizeof(cid_str), "%u", cid);
+
+	if (port == ~(__u32)0)
+		snprintf(port_str, sizeof(port_str), "*");
+	else
+		snprintf(port_str, sizeof(port_str), "%u", port);
+
+	sock_addr_print(cid_str, ":", port_str, NULL);
+}
+
+static void vsock_stats_print(struct sockstat *s, struct filter *f)
+{
+	sock_state_print(s);
+
+	vsock_addr_print(&s->local, s->lport);
+	vsock_addr_print(&s->remote, s->rport);
+
+	proc_ctx_print(s);
+}
+
+static int vsock_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct filter *f = (struct filter *)arg;
+	struct vsock_diag_msg *r = NLMSG_DATA(nlh);
+	struct sockstat stat = {
+		.type = r->vdiag_type,
+		.lport = r->vdiag_src_port,
+		.rport = r->vdiag_dst_port,
+		.state = r->vdiag_state,
+		.ino = r->vdiag_ino,
+	};
+
+	vsock_set_inet_prefix(&stat.local, r->vdiag_src_cid);
+	vsock_set_inet_prefix(&stat.remote, r->vdiag_dst_cid);
+
+	if (vsock_type_skip(&stat, f))
+		return 0;
+
+	if (f->f && run_ssfilter(f->f, &stat) == 0)
+		return 0;
+
+	vsock_stats_print(&stat, f);
+
+	return 0;
+}
+
+static int vsock_show(struct filter *f)
+{
+	DIAG_REQUEST(req, struct vsock_diag_req r);
+
+	if (!filter_af_get(f, AF_VSOCK))
+		return 0;
+
+	req.r.sdiag_family = AF_VSOCK;
+	req.r.vdiag_states = f->states;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), vsock_show_sock);
+}
+
+static void tipc_sock_addr_print(struct rtattr *net_addr, struct rtattr *id)
+{
+	uint32_t node = rta_getattr_u32(net_addr);
+	uint32_t identity = rta_getattr_u32(id);
+
+	SPRINT_BUF(addr) = {};
+	SPRINT_BUF(port) = {};
+
+	sprintf(addr, "%u", node);
+	sprintf(port, "%u", identity);
+	sock_addr_print(addr, ":", port, NULL);
+
+}
+
+static int tipc_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct rtattr *stat[TIPC_NLA_SOCK_STAT_MAX + 1] = {};
+	struct rtattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
+	struct rtattr *con[TIPC_NLA_CON_MAX + 1] = {};
+	struct rtattr *info[TIPC_NLA_MAX + 1] = {};
+	struct rtattr *msg_ref;
+	struct sockstat ss = {};
+
+	parse_rtattr(info, TIPC_NLA_MAX, NLMSG_DATA(nlh),
+		     NLMSG_PAYLOAD(nlh, 0));
+
+	if (!info[TIPC_NLA_SOCK])
+		return 0;
+
+	msg_ref = info[TIPC_NLA_SOCK];
+	parse_rtattr(attrs, TIPC_NLA_SOCK_MAX, RTA_DATA(msg_ref),
+		     RTA_PAYLOAD(msg_ref));
+
+	msg_ref = attrs[TIPC_NLA_SOCK_STAT];
+	parse_rtattr(stat, TIPC_NLA_SOCK_STAT_MAX,
+		     RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref));
+
+
+	ss.local.family = AF_TIPC;
+	ss.type = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TYPE]);
+	ss.state = rta_getattr_u32(attrs[TIPC_NLA_SOCK_TIPC_STATE]);
+	ss.uid = rta_getattr_u32(attrs[TIPC_NLA_SOCK_UID]);
+	ss.ino = rta_getattr_u32(attrs[TIPC_NLA_SOCK_INO]);
+	ss.rq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_RCVQ]);
+	ss.wq = rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_SENDQ]);
+	ss.sk = rta_getattr_u64(attrs[TIPC_NLA_SOCK_COOKIE]);
+
+	sock_state_print (&ss);
+
+	tipc_sock_addr_print(attrs[TIPC_NLA_SOCK_ADDR],
+			     attrs[TIPC_NLA_SOCK_REF]);
+
+	msg_ref = attrs[TIPC_NLA_SOCK_CON];
+	if (msg_ref) {
+		parse_rtattr(con, TIPC_NLA_CON_MAX,
+			     RTA_DATA(msg_ref), RTA_PAYLOAD(msg_ref));
+
+		tipc_sock_addr_print(con[TIPC_NLA_CON_NODE],
+				     con[TIPC_NLA_CON_SOCK]);
+	} else
+		sock_addr_print("", "-", "", NULL);
+
+	if (show_details)
+		sock_details_print(&ss);
+
+	proc_ctx_print(&ss);
+
+	if (show_tipcinfo) {
+		if (oneline)
+			out(" type:%s", stype_nameg[ss.type]);
+		else
+			out("\n type:%s", stype_nameg[ss.type]);
+		out(" cong:%s ",
+		       stat[TIPC_NLA_SOCK_STAT_LINK_CONG] ? "link" :
+		       stat[TIPC_NLA_SOCK_STAT_CONN_CONG] ? "conn" : "none");
+		out(" drop:%d ",
+		       rta_getattr_u32(stat[TIPC_NLA_SOCK_STAT_DROP]));
+
+		if (attrs[TIPC_NLA_SOCK_HAS_PUBL])
+			out(" publ");
+
+		if (con[TIPC_NLA_CON_FLAG])
+			out(" via {%u,%u} ",
+			       rta_getattr_u32(con[TIPC_NLA_CON_TYPE]),
+			       rta_getattr_u32(con[TIPC_NLA_CON_INST]));
+	}
+
+	return 0;
+}
+
+static int tipc_show(struct filter *f)
+{
+	DIAG_REQUEST(req, struct tipc_sock_diag_req r);
+
+	memset(&req.r, 0, sizeof(req.r));
+	req.r.sdiag_family = AF_TIPC;
+	req.r.tidiag_states = f->states;
+
+	return handle_netlink_request(f, &req.nlh, sizeof(req), tipc_show_sock);
+}
+
+struct sock_diag_msg {
+	__u8 sdiag_family;
+};
+
+static int generic_show_sock(struct nlmsghdr *nlh, void *arg)
+{
+	struct sock_diag_msg *r = NLMSG_DATA(nlh);
+	struct inet_diag_arg inet_arg = { .f = arg, .protocol = IPPROTO_MAX };
+	int ret;
+
+	switch (r->sdiag_family) {
+	case AF_INET:
+	case AF_INET6:
+		inet_arg.rth = inet_arg.f->rth_for_killing;
+		ret = show_one_inet_sock(nlh, &inet_arg);
+		break;
+	case AF_UNIX:
+		ret = unix_show_sock(nlh, arg);
+		break;
+	case AF_PACKET:
+		ret = packet_show_sock(nlh, arg);
+		break;
+	case AF_NETLINK:
+		ret = netlink_show_sock(nlh, arg);
+		break;
+	case AF_VSOCK:
+		ret = vsock_show_sock(nlh, arg);
+		break;
+	case AF_XDP:
+		ret = xdp_show_sock(nlh, arg);
+		break;
+	default:
+		ret = -1;
+	}
+
+	render();
+
+	return ret;
+}
+
+static int handle_follow_request(struct filter *f)
+{
+	int ret = 0;
+	int groups = 0;
+	struct rtnl_handle rth, rth2;
+
+	if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << TCP_DB))
+		groups |= 1 << (SKNLGRP_INET_TCP_DESTROY - 1);
+	if (f->families & FAMILY_MASK(AF_INET) && f->dbs & (1 << UDP_DB))
+		groups |= 1 << (SKNLGRP_INET_UDP_DESTROY - 1);
+	if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << TCP_DB))
+		groups |= 1 << (SKNLGRP_INET6_TCP_DESTROY - 1);
+	if (f->families & FAMILY_MASK(AF_INET6) && f->dbs & (1 << UDP_DB))
+		groups |= 1 << (SKNLGRP_INET6_UDP_DESTROY - 1);
+
+	if (groups == 0)
+		return -1;
+
+	if (rtnl_open_byproto(&rth, groups, NETLINK_SOCK_DIAG))
+		return -1;
+
+	rth.dump = 0;
+	rth.local.nl_pid = 0;
+
+	if (f->kill) {
+		if (rtnl_open_byproto(&rth2, groups, NETLINK_SOCK_DIAG)) {
+			rtnl_close(&rth);
+			return -1;
+		}
+		f->rth_for_killing = &rth2;
+	}
+
+	if (rtnl_dump_filter(&rth, generic_show_sock, f))
+		ret = -1;
+
+	rtnl_close(&rth);
+	if (f->rth_for_killing)
+		rtnl_close(f->rth_for_killing);
+	return ret;
+}
+
+static int get_snmp_int(char *proto, char *key, int *result)
+{
+	char buf[1024];
+	FILE *fp;
+	int protolen = strlen(proto);
+	int keylen = strlen(key);
+
+	*result = 0;
+
+	if ((fp = net_snmp_open()) == NULL)
+		return -1;
+
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		char *p = buf;
+		int  pos = 0;
+
+		if (memcmp(buf, proto, protolen))
+			continue;
+		while ((p = strchr(p, ' ')) != NULL) {
+			pos++;
+			p++;
+			if (memcmp(p, key, keylen) == 0 &&
+			    (p[keylen] == ' ' || p[keylen] == '\n'))
+				break;
+		}
+		if (fgets(buf, sizeof(buf), fp) == NULL)
+			break;
+		if (memcmp(buf, proto, protolen))
+			break;
+		p = buf;
+		while ((p = strchr(p, ' ')) != NULL) {
+			p++;
+			if (--pos == 0) {
+				sscanf(p, "%d", result);
+				fclose(fp);
+				return 0;
+			}
+		}
+	}
+
+	fclose(fp);
+	errno = ESRCH;
+	return -1;
+}
+
+
+/* Get stats from sockstat */
+
+struct ssummary {
+	int socks;
+	int tcp_mem;
+	int tcp_total;
+	int tcp_orphans;
+	int tcp_tws;
+	int tcp4_hashed;
+	int udp4;
+	int raw4;
+	int frag4;
+	int frag4_mem;
+	int tcp6_hashed;
+	int udp6;
+	int raw6;
+	int frag6;
+	int frag6_mem;
+};
+
+static void get_sockstat_line(char *line, struct ssummary *s)
+{
+	char id[256], rem[256];
+
+	if (sscanf(line, "%[^ ] %[^\n]\n", id, rem) != 2)
+		return;
+
+	if (strcmp(id, "sockets:") == 0)
+		sscanf(rem, "%*s%d", &s->socks);
+	else if (strcmp(id, "UDP:") == 0)
+		sscanf(rem, "%*s%d", &s->udp4);
+	else if (strcmp(id, "UDP6:") == 0)
+		sscanf(rem, "%*s%d", &s->udp6);
+	else if (strcmp(id, "RAW:") == 0)
+		sscanf(rem, "%*s%d", &s->raw4);
+	else if (strcmp(id, "RAW6:") == 0)
+		sscanf(rem, "%*s%d", &s->raw6);
+	else if (strcmp(id, "TCP6:") == 0)
+		sscanf(rem, "%*s%d", &s->tcp6_hashed);
+	else if (strcmp(id, "FRAG:") == 0)
+		sscanf(rem, "%*s%d%*s%d", &s->frag4, &s->frag4_mem);
+	else if (strcmp(id, "FRAG6:") == 0)
+		sscanf(rem, "%*s%d%*s%d", &s->frag6, &s->frag6_mem);
+	else if (strcmp(id, "TCP:") == 0)
+		sscanf(rem, "%*s%d%*s%d%*s%d%*s%d%*s%d",
+		       &s->tcp4_hashed,
+		       &s->tcp_orphans, &s->tcp_tws, &s->tcp_total, &s->tcp_mem);
+}
+
+static int get_sockstat(struct ssummary *s)
+{
+	char buf[256];
+	FILE *fp;
+
+	memset(s, 0, sizeof(*s));
+
+	if ((fp = net_sockstat_open()) == NULL)
+		return -1;
+	while (fgets(buf, sizeof(buf), fp) != NULL)
+		get_sockstat_line(buf, s);
+	fclose(fp);
+
+	if ((fp = net_sockstat6_open()) == NULL)
+		return 0;
+	while (fgets(buf, sizeof(buf), fp) != NULL)
+		get_sockstat_line(buf, s);
+	fclose(fp);
+
+	return 0;
+}
+
+static int print_summary(void)
+{
+	struct ssummary s;
+	int tcp_estab;
+
+	if (get_sockstat(&s) < 0)
+		perror("ss: get_sockstat");
+	if (get_snmp_int("Tcp:", "CurrEstab", &tcp_estab) < 0)
+		perror("ss: get_snmpstat");
+
+	printf("Total: %d\n", s.socks);
+
+	printf("TCP:   %d (estab %d, closed %d, orphaned %d, timewait %d)\n",
+	       s.tcp_total + s.tcp_tws, tcp_estab,
+	       s.tcp_total - (s.tcp4_hashed + s.tcp6_hashed - s.tcp_tws),
+	       s.tcp_orphans, s.tcp_tws);
+
+	printf("\n");
+	printf("Transport Total     IP        IPv6\n");
+	printf("RAW	  %-9d %-9d %-9d\n", s.raw4+s.raw6, s.raw4, s.raw6);
+	printf("UDP	  %-9d %-9d %-9d\n", s.udp4+s.udp6, s.udp4, s.udp6);
+	printf("TCP	  %-9d %-9d %-9d\n", s.tcp4_hashed+s.tcp6_hashed, s.tcp4_hashed, s.tcp6_hashed);
+	printf("INET	  %-9d %-9d %-9d\n",
+	       s.raw4+s.udp4+s.tcp4_hashed+
+	       s.raw6+s.udp6+s.tcp6_hashed,
+	       s.raw4+s.udp4+s.tcp4_hashed,
+	       s.raw6+s.udp6+s.tcp6_hashed);
+	printf("FRAG	  %-9d %-9d %-9d\n", s.frag4+s.frag6, s.frag4, s.frag6);
+
+	printf("\n");
+
+	return 0;
+}
+
+static void _usage(FILE *dest)
+{
+	fprintf(dest,
+"Usage: ss [ OPTIONS ]\n"
+"       ss [ OPTIONS ] [ FILTER ]\n"
+"   -h, --help          this message\n"
+"   -V, --version       output version information\n"
+"   -n, --numeric       don't resolve service names\n"
+"   -r, --resolve       resolve host names\n"
+"   -a, --all           display all sockets\n"
+"   -l, --listening     display listening sockets\n"
+"   -B, --bound-inactive display TCP bound but inactive sockets\n"
+"   -o, --options       show timer information\n"
+"   -e, --extended      show detailed socket information\n"
+"   -m, --memory        show socket memory usage\n"
+"   -p, --processes     show process using socket\n"
+"   -T, --threads       show thread using socket\n"
+"   -i, --info          show internal TCP information\n"
+"       --tipcinfo      show internal tipc socket information\n"
+"   -s, --summary       show socket usage summary\n"
+"       --tos           show tos and priority information\n"
+"       --cgroup        show cgroup information\n"
+"   -b, --bpf           show bpf filter socket information\n"
+"   -E, --events        continually display sockets as they are destroyed\n"
+"   -Z, --context       display task SELinux security contexts\n"
+"   -z, --contexts      display task and socket SELinux security contexts\n"
+"   -N, --net           switch to the specified network namespace name\n"
+"\n"
+"   -4, --ipv4          display only IP version 4 sockets\n"
+"   -6, --ipv6          display only IP version 6 sockets\n"
+"   -0, --packet        display PACKET sockets\n"
+"   -t, --tcp           display only TCP sockets\n"
+"   -M, --mptcp         display only MPTCP sockets\n"
+"   -S, --sctp          display only SCTP sockets\n"
+"   -u, --udp           display only UDP sockets\n"
+"   -d, --dccp          display only DCCP sockets\n"
+"   -w, --raw           display only RAW sockets\n"
+"   -x, --unix          display only Unix domain sockets\n"
+"       --tipc          display only TIPC sockets\n"
+"       --vsock         display only vsock sockets\n"
+"       --xdp           display only XDP sockets\n"
+"   -f, --family=FAMILY display sockets of type FAMILY\n"
+"       FAMILY := {inet|inet6|link|unix|netlink|vsock|tipc|xdp|help}\n"
+"\n"
+"   -K, --kill          forcibly close sockets, display what was closed\n"
+"   -H, --no-header     Suppress header line\n"
+"   -O, --oneline       socket's data printed on a single line\n"
+"       --inet-sockopt  show various inet socket options\n"
+"\n"
+"   -A, --query=QUERY, --socket=QUERY\n"
+"       QUERY := {all|inet|tcp|mptcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|packet_raw|packet_dgram|netlink|dccp|sctp|vsock_stream|vsock_dgram|tipc|xdp}[,QUERY]\n"
+"\n"
+"   -D, --diag=FILE     Dump raw information about TCP sockets to FILE\n"
+"   -F, --filter=FILE   read filter information from FILE\n"
+"       FILTER := [ state STATE-FILTER ] [ EXPRESSION ]\n"
+"       STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}\n"
+"         TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}\n"
+"          connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
+"       synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}\n"
+"             bucket := {syn-recv|time-wait}\n"
+"                big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}\n"
+		);
+}
+
+static void help(void) __attribute__((noreturn));
+static void help(void)
+{
+	_usage(stdout);
+	exit(0);
+}
+
+static void usage(void) __attribute__((noreturn));
+static void usage(void)
+{
+	_usage(stderr);
+	exit(-1);
+}
+
+
+static int scan_state(const char *state)
+{
+	static const char * const sstate_namel[] = {
+		"UNKNOWN",
+		[SS_ESTABLISHED] = "established",
+		[SS_SYN_SENT] = "syn-sent",
+		[SS_SYN_RECV] = "syn-recv",
+		[SS_FIN_WAIT1] = "fin-wait-1",
+		[SS_FIN_WAIT2] = "fin-wait-2",
+		[SS_TIME_WAIT] = "time-wait",
+		[SS_CLOSE] = "unconnected",
+		[SS_CLOSE_WAIT] = "close-wait",
+		[SS_LAST_ACK] = "last-ack",
+		[SS_LISTEN] =	"listening",
+		[SS_CLOSING] = "closing",
+		[SS_NEW_SYN_RECV] = "new-syn-recv",
+		[SS_BOUND_INACTIVE] = "bound-inactive",
+	};
+	int i;
+
+	/* NEW_SYN_RECV is a kernel implementation detail. It shouldn't be used
+	 * or even be visible by users.
+	 */
+	if (strcasecmp(state, "new-syn-recv") == 0)
+		goto wrong_state;
+
+	if (strcasecmp(state, "close") == 0 ||
+	    strcasecmp(state, "closed") == 0)
+		return (1<<SS_CLOSE);
+	if (strcasecmp(state, "syn-rcv") == 0)
+		return (1<<SS_SYN_RECV);
+	if (strcasecmp(state, "established") == 0)
+		return (1<<SS_ESTABLISHED);
+	if (strcasecmp(state, "all") == 0)
+		return SS_ALL;
+	if (strcasecmp(state, "connected") == 0)
+		return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN));
+	if (strcasecmp(state, "synchronized") == 0)
+		return SS_ALL & ~((1<<SS_CLOSE)|(1<<SS_LISTEN)|(1<<SS_SYN_SENT));
+	if (strcasecmp(state, "bucket") == 0)
+		return (1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT);
+	if (strcasecmp(state, "big") == 0)
+		return SS_ALL & ~((1<<SS_SYN_RECV)|(1<<SS_TIME_WAIT));
+	for (i = 0; i < SS_MAX; i++) {
+		if (strcasecmp(state, sstate_namel[i]) == 0)
+			return (1<<i);
+	}
+
+wrong_state:
+	fprintf(stderr, "ss: wrong state name: %s\n", state);
+	exit(-1);
+}
+
+/* Values 'v' and 'V' are already used so a non-character is used */
+#define OPT_VSOCK 256
+
+/* Values of 't' are already used so a non-character is used */
+#define OPT_TIPCSOCK 257
+#define OPT_TIPCINFO 258
+
+#define OPT_TOS 259
+
+/* Values of 'x' are already used so a non-character is used */
+#define OPT_XDPSOCK 260
+
+#define OPT_CGROUP 261
+
+#define OPT_INET_SOCKOPT 262
+
+static const struct option long_opts[] = {
+	{ "numeric", 0, 0, 'n' },
+	{ "resolve", 0, 0, 'r' },
+	{ "options", 0, 0, 'o' },
+	{ "extended", 0, 0, 'e' },
+	{ "memory", 0, 0, 'm' },
+	{ "info", 0, 0, 'i' },
+	{ "processes", 0, 0, 'p' },
+	{ "threads", 0, 0, 'T' },
+	{ "bpf", 0, 0, 'b' },
+	{ "events", 0, 0, 'E' },
+	{ "dccp", 0, 0, 'd' },
+	{ "tcp", 0, 0, 't' },
+	{ "sctp", 0, 0, 'S' },
+	{ "udp", 0, 0, 'u' },
+	{ "raw", 0, 0, 'w' },
+	{ "unix", 0, 0, 'x' },
+	{ "tipc", 0, 0, OPT_TIPCSOCK},
+	{ "vsock", 0, 0, OPT_VSOCK },
+	{ "all", 0, 0, 'a' },
+	{ "listening", 0, 0, 'l' },
+	{ "bound-inactive", 0, 0, 'B' },
+	{ "ipv4", 0, 0, '4' },
+	{ "ipv6", 0, 0, '6' },
+	{ "packet", 0, 0, '0' },
+	{ "family", 1, 0, 'f' },
+	{ "socket", 1, 0, 'A' },
+	{ "query", 1, 0, 'A' },
+	{ "summary", 0, 0, 's' },
+	{ "diag", 1, 0, 'D' },
+	{ "filter", 1, 0, 'F' },
+	{ "version", 0, 0, 'V' },
+	{ "help", 0, 0, 'h' },
+	{ "context", 0, 0, 'Z' },
+	{ "contexts", 0, 0, 'z' },
+	{ "net", 1, 0, 'N' },
+	{ "tipcinfo", 0, 0, OPT_TIPCINFO},
+	{ "tos", 0, 0, OPT_TOS },
+	{ "cgroup", 0, 0, OPT_CGROUP },
+	{ "kill", 0, 0, 'K' },
+	{ "no-header", 0, 0, 'H' },
+	{ "xdp", 0, 0, OPT_XDPSOCK},
+	{ "mptcp", 0, 0, 'M' },
+	{ "oneline", 0, 0, 'O' },
+	{ "inet-sockopt", 0, 0, OPT_INET_SOCKOPT },
+	{ 0 }
+
+};
+
+int main(int argc, char *argv[])
+{
+	int saw_states = 0;
+	int saw_query = 0;
+	int do_summary = 0;
+	const char *dump_tcpdiag = NULL;
+	FILE *filter_fp = NULL;
+	int ch;
+	int state_filter = 0;
+
+	while ((ch = getopt_long(argc, argv,
+				 "dhalBetuwxnro460spTbEf:mMiA:D:F:vVzZN:KHSO",
+				 long_opts, NULL)) != EOF) {
+		switch (ch) {
+		case 'n':
+			numeric = 1;
+			break;
+		case 'r':
+			resolve_hosts = 1;
+			break;
+		case 'o':
+			show_options = 1;
+			break;
+		case 'e':
+			show_options = 1;
+			show_details++;
+			break;
+		case 'm':
+			show_mem = 1;
+			break;
+		case 'i':
+			show_tcpinfo = 1;
+			break;
+		case 'p':
+			show_processes++;
+			break;
+		case 'T':
+			show_threads++;
+			break;
+		case 'b':
+			show_options = 1;
+			show_bpf++;
+			break;
+		case 'E':
+			follow_events = 1;
+			break;
+		case 'd':
+			filter_db_set(&current_filter, DCCP_DB, true);
+			break;
+		case 't':
+			filter_db_set(&current_filter, TCP_DB, true);
+			break;
+		case 'S':
+			filter_db_set(&current_filter, SCTP_DB, true);
+			break;
+		case 'u':
+			filter_db_set(&current_filter, UDP_DB, true);
+			break;
+		case 'w':
+			filter_db_set(&current_filter, RAW_DB, true);
+			break;
+		case 'x':
+			filter_af_set(&current_filter, AF_UNIX);
+			break;
+		case OPT_VSOCK:
+			filter_af_set(&current_filter, AF_VSOCK);
+			break;
+		case OPT_TIPCSOCK:
+			filter_af_set(&current_filter, AF_TIPC);
+			break;
+		case 'a':
+			state_filter = SS_ALL;
+			break;
+		case 'l':
+			state_filter = (1 << SS_LISTEN) | (1 << SS_CLOSE);
+			break;
+		case 'B':
+			state_filter = 1 << SS_BOUND_INACTIVE;
+			break;
+		case '4':
+			filter_af_set(&current_filter, AF_INET);
+			break;
+		case '6':
+			filter_af_set(&current_filter, AF_INET6);
+			break;
+		case '0':
+			filter_af_set(&current_filter, AF_PACKET);
+			break;
+		case OPT_XDPSOCK:
+			filter_af_set(&current_filter, AF_XDP);
+			break;
+		case 'M':
+			filter_db_set(&current_filter, MPTCP_DB, true);
+			break;
+		case 'f':
+			if (strcmp(optarg, "inet") == 0)
+				filter_af_set(&current_filter, AF_INET);
+			else if (strcmp(optarg, "inet6") == 0)
+				filter_af_set(&current_filter, AF_INET6);
+			else if (strcmp(optarg, "link") == 0)
+				filter_af_set(&current_filter, AF_PACKET);
+			else if (strcmp(optarg, "unix") == 0)
+				filter_af_set(&current_filter, AF_UNIX);
+			else if (strcmp(optarg, "netlink") == 0)
+				filter_af_set(&current_filter, AF_NETLINK);
+			else if (strcmp(optarg, "tipc") == 0)
+				filter_af_set(&current_filter, AF_TIPC);
+			else if (strcmp(optarg, "vsock") == 0)
+				filter_af_set(&current_filter, AF_VSOCK);
+			else if (strcmp(optarg, "xdp") == 0)
+				filter_af_set(&current_filter, AF_XDP);
+			else if (strcmp(optarg, "help") == 0)
+				help();
+			else {
+				fprintf(stderr, "ss: \"%s\" is invalid family\n",
+						optarg);
+				usage();
+			}
+			break;
+		case 'A':
+		{
+			char *p, *p1;
+
+			if (!saw_query) {
+				current_filter.dbs = 0;
+				state_filter = state_filter ?
+					       state_filter : SS_CONN;
+				saw_query = 1;
+				do_default = 0;
+			}
+			p = p1 = optarg;
+			do {
+				if ((p1 = strchr(p, ',')) != NULL)
+					*p1 = 0;
+				if (filter_db_parse(&current_filter, p)) {
+					fprintf(stderr, "ss: \"%s\" is illegal socket table id\n", p);
+					usage();
+				}
+				p = p1 + 1;
+			} while (p1);
+			break;
+		}
+		case 's':
+			do_summary = 1;
+			break;
+		case 'D':
+			dump_tcpdiag = optarg;
+			break;
+		case 'F':
+			if (filter_fp) {
+				fprintf(stderr, "More than one filter file\n");
+				exit(-1);
+			}
+			if (optarg[0] == '-')
+				filter_fp = stdin;
+			else
+				filter_fp = fopen(optarg, "r");
+			if (!filter_fp) {
+				perror("fopen filter file");
+				exit(-1);
+			}
+			break;
+		case 'v':
+		case 'V':
+			printf("ss utility, iproute2-%s\n", version);
+			exit(0);
+		case 'z':
+			show_sock_ctx++;
+			/* fall through */
+		case 'Z':
+			if (!is_selinux_enabled()) {
+				fprintf(stderr, "ss: SELinux is not enabled.\n");
+				exit(1);
+			}
+			show_proc_ctx++;
+			break;
+		case 'N':
+			if (netns_switch(optarg))
+				exit(1);
+			break;
+		case OPT_TIPCINFO:
+			show_tipcinfo = 1;
+			break;
+		case OPT_TOS:
+			show_tos = 1;
+			break;
+		case OPT_CGROUP:
+			show_cgroup = 1;
+			break;
+		case 'K':
+			current_filter.kill = 1;
+			break;
+		case 'H':
+			show_header = 0;
+			break;
+		case 'O':
+			oneline = 1;
+			break;
+		case OPT_INET_SOCKOPT:
+			show_inet_sockopt = 1;
+			break;
+		case 'h':
+			help();
+		case '?':
+		default:
+			usage();
+		}
+	}
+
+	if (show_processes || show_threads || show_proc_ctx || show_sock_ctx)
+		user_ent_hash_build();
+
+	argc -= optind;
+	argv += optind;
+
+	if (do_summary) {
+		print_summary();
+		if (do_default && argc == 0)
+			exit(0);
+	}
+
+	while (argc > 0) {
+		if (strcmp(*argv, "state") == 0) {
+			NEXT_ARG();
+			if (!saw_states)
+				state_filter = 0;
+			state_filter |= scan_state(*argv);
+			saw_states = 1;
+		} else if (strcmp(*argv, "exclude") == 0 ||
+			   strcmp(*argv, "excl") == 0) {
+			NEXT_ARG();
+			if (!saw_states)
+				state_filter = SS_ALL;
+			state_filter &= ~scan_state(*argv);
+			saw_states = 1;
+		} else {
+			break;
+		}
+		argc--; argv++;
+	}
+
+	if (do_default) {
+		state_filter = state_filter ? state_filter : SS_CONN;
+		filter_db_parse(&current_filter, "all");
+	}
+
+	filter_states_set(&current_filter, state_filter);
+	filter_merge_defaults(&current_filter);
+
+#ifdef HAVE_RPC
+	if (!numeric && resolve_hosts &&
+	    (current_filter.dbs & (UNIX_DBM|INET_L4_DBM)))
+		init_service_resolver();
+#endif
+
+	if (current_filter.dbs == 0) {
+		fprintf(stderr, "ss: no socket tables to show with such filter.\n");
+		exit(0);
+	}
+	if (current_filter.families == 0) {
+		fprintf(stderr, "ss: no families to show with such filter.\n");
+		exit(0);
+	}
+	if (current_filter.states == 0) {
+		fprintf(stderr, "ss: no socket states to show with such filter.\n");
+		exit(0);
+	}
+
+	if (dump_tcpdiag) {
+		FILE *dump_fp = stdout;
+
+		if (!(current_filter.dbs & (1<<TCP_DB))) {
+			fprintf(stderr, "ss: tcpdiag dump requested and no tcp in filter.\n");
+			exit(0);
+		}
+		if (dump_tcpdiag[0] != '-') {
+			dump_fp = fopen(dump_tcpdiag, "w");
+			if (!dump_tcpdiag) {
+				perror("fopen dump file");
+				exit(-1);
+			}
+		}
+		inet_show_netlink(&current_filter, dump_fp, IPPROTO_TCP);
+		fflush(dump_fp);
+		exit(0);
+	}
+
+	if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
+		usage();
+
+	if (!show_processes)
+		columns[COL_PROC].disabled = 1;
+
+	if (!(current_filter.dbs & (current_filter.dbs - 1)))
+		columns[COL_NETID].disabled = 1;
+
+	if (!(current_filter.states & (current_filter.states - 1)))
+		columns[COL_STATE].disabled = 1;
+
+	if (show_header)
+		print_header();
+
+	fflush(stdout);
+
+	if (follow_events)
+		exit(handle_follow_request(&current_filter));
+
+	if (current_filter.dbs & (1<<NETLINK_DB))
+		netlink_show(&current_filter);
+	if (current_filter.dbs & PACKET_DBM)
+		packet_show(&current_filter);
+	if (current_filter.dbs & UNIX_DBM)
+		unix_show(&current_filter);
+	if (current_filter.dbs & (1<<RAW_DB))
+		raw_show(&current_filter);
+	if (current_filter.dbs & (1<<UDP_DB))
+		udp_show(&current_filter);
+	if (current_filter.dbs & (1<<TCP_DB))
+		tcp_show(&current_filter);
+	if (current_filter.dbs & (1<<DCCP_DB))
+		dccp_show(&current_filter);
+	if (current_filter.dbs & (1<<SCTP_DB))
+		sctp_show(&current_filter);
+	if (current_filter.dbs & VSOCK_DBM)
+		vsock_show(&current_filter);
+	if (current_filter.dbs & (1<<TIPC_DB))
+		tipc_show(&current_filter);
+	if (current_filter.dbs & (1<<XDP_DB))
+		xdp_show(&current_filter);
+	if (current_filter.dbs & (1<<MPTCP_DB))
+		mptcp_show(&current_filter);
+
+	if (show_processes || show_threads || show_proc_ctx || show_sock_ctx)
+		user_ent_destroy();
+
+	render();
+
+	return 0;
+}