ss: add unix_seqpacket to the help message and the man page

Signed-off-by: Masatake YAMATO <>
diff --git a/man/man8/ss.8 b/man/man8/ss.8
index e55dd0c..807d9dc 100644
--- a/man/man8/ss.8
+++ b/man/man8/ss.8
@@ -87,7 +87,7 @@
 .B \-A QUERY, \-\-query=QUERY, \-\-socket=QUERY
 List of socket tables to dump, separated by commas. The following identifiers
 are understood: all, inet, tcp, udp, raw, unix, packet, netlink, unix_dgram,
-unix_stream, packet_raw, packet_dgram.
+unix_stream, unix_seqpacket, packet_raw, packet_dgram.
 .B \-D FILE, \-\-diag=FILE
 Do not display anything, just dump raw information about TCP sockets to FILE after applying filters. If FILE is - stdout is used.
diff --git a/misc/ss.c b/misc/ss.c
index 887152a..764ffe2 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -3072,7 +3072,7 @@
 "   -f, --family=FAMILY display sockets of type FAMILY\n"
 "   -A, --query=QUERY, --socket=QUERY\n"
-"       QUERY := {all|inet|tcp|udp|raw|unix|packet|netlink}[,QUERY]\n"
+"       QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink}[,QUERY]\n"
 "   -D, --diag=FILE     Dump raw information about TCP sockets to FILE\n"
 "   -F, --filter=FILE   read filter information from FILE\n"