Multi-line output in ss makes it difficult to search for things with
grep. This new option will make it easier to find sockets matching
certain criteria with simple grep commands.
Example without option:
$ ss -emoitn
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 0 127.0.0.1:13265 127.0.0.1:36743
uid:1974 ino:48271 sk:1 <->
skmem:(r0,rb2227595,t0,tb2626560,f0,w0,o0,bl0,d0) ts sack reno
wscale:7,7 rto:211 rtt:10.245/16.616 ato:40 mss:65483 cwnd:10
bytes_acked:41865496 bytes_received:21580440 segs_out:242496 segs_in:351446
data_segs_out:242495 data_segs_in:242495 send 511.3Mbps lastsnd:2383
lastrcv:2383 lastack:2342 pacing_rate 1022.6Mbps rcv_rtt:92427.6
rcv_space:43725 minrtt:0.007
Example with new option:
$ ss -emoitnO
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 0 127.0.0.1:13265
127.0.0.1:36743 uid:1974 ino:48271 sk:1 <->
skmem:(r0,rb2227595,t0,tb2626560,f0,w0,o0,bl0,d0) ts sack reno wscale:7,7
rto:211 rtt:10.067/16.429 ato:40 mss:65483 pmtu:65535 rcvmss:536 advmss:65483
cwnd:10 bytes_sent:41868244 bytes_acked:41868244 bytes_received:21581866
segs_out:242512 segs_in:351469 data_segs_out:242511 data_segs_in:242511 send
520.4Mbps lastsnd:14355 lastrcv:14355 lastack:14314 pacing_rate 1040.7Mbps
delivery_rate 74837.7Mbps delivered:242512 app_limited busy:1861946ms
rcv_rtt:92427.6 rcv_space:43725 rcv_ssthresh:43690 minrtt:0.007
Signed-off-by: Josh Hunt <joh...@akamai.com>
---
man/man8/ss.8 | 3 +++
misc/ss.c | 51 +++++++++++++++++++++++++++++++++++++++++----------
2 files changed, 44 insertions(+), 10 deletions(-)
diff --git a/man/man8/ss.8 b/man/man8/ss.8
index 03a3dcc6c9c3..dd5ebc96ec03 100644
--- a/man/man8/ss.8
+++ b/man/man8/ss.8
@@ -24,6 +24,9 @@ Output version information.
.B \-H, \-\-no-header
Suppress header line.
.TP
+.B \-O, \-\-one-line
+Print each socket's data on a single line.
+.TP
.B \-n, \-\-numeric
Do not try to resolve service names.
.TP
diff --git a/misc/ss.c b/misc/ss.c
index 9cb3ee19e542..3a193db7d17f 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -121,6 +121,7 @@ static int follow_events;
static int sctp_ino;
static int show_tipcinfo;
static int show_tos;
+int oneline = 0;
enum col_id {
COL_NETID,
@@ -3053,7 +3054,8 @@ static int inet_show_sock(struct nlmsghdr *nlh,
}
if (show_mem || (show_tcpinfo && s->type != IPPROTO_UDP)) {
- out("\n\t");
+ if (!oneline)
+ out("\n\t");
if (s->type == IPPROTO_SCTP)
sctp_show_info(nlh, r, tb);
else
@@ -3973,7 +3975,10 @@ static int packet_show_sock(struct nlmsghdr *nlh, void
*arg)
if (show_details) {
if (pinfo) {
- out("\n\tver:%d", pinfo->pdi_version);
+ 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)
@@ -3991,19 +3996,28 @@ static int packet_show_sock(struct nlmsghdr *nlh, void
*arg)
out(" )");
}
if (ring_rx) {
- out("\n\tring_rx(");
+ if (oneline)
+ out(" ring_rx(");
+ else
+ out("\n\tring_rx(");
packet_show_ring(ring_rx);
out(")");
}
if (ring_tx) {
- out("\n\tring_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;
- out("\n\tfanout(");
+ if (oneline)
+ out(" fanout(");
+ else
+ out("\n\tfanout(");
out("id:%d,", fanout & 0xffff);
out("type:");
@@ -4032,7 +4046,10 @@ static int packet_show_sock(struct nlmsghdr *nlh, void
*arg)
int num = RTA_PAYLOAD(tb[PACKET_DIAG_FILTER]) /
sizeof(struct sock_filter);
- out("\n\tbpf filter (%d): ", num);
+ 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);
@@ -4144,7 +4161,10 @@ static int xdp_stats_print(struct sockstat *s, const
struct filter *f)
static void xdp_show_ring(const char *name, struct xdp_diag_ring *ring)
{
- out("\n\t%s(", name);
+ if (oneline)
+ out(" %s(", name);
+ else
+ out("\n\t%s(", name);
out("entries:%u", ring->entries);
out(")");
}
@@ -4152,7 +4172,10 @@ static void xdp_show_ring(const char *name, struct
xdp_diag_ring *ring)
static void xdp_show_umem(struct xdp_diag_umem *umem, struct xdp_diag_ring *fr,
struct xdp_diag_ring *cr)
{
- out("\n\tumem(");
+ 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);
@@ -4574,7 +4597,10 @@ static int tipc_show_sock(struct nlmsghdr *nlh, void
*arg)
proc_ctx_print(&ss);
if (show_tipcinfo) {
- out("\n type:%s", stype_nameg[ss.type]);
+ 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");
@@ -4877,6 +4903,7 @@ static void _usage(FILE *dest)
"\n"
" -K, --kill forcibly close sockets, display what was closed\n"
" -H, --no-header Suppress header line\n"
+" -O, --one-line socket's data printed on a single line\n"
"\n"
" -A, --query=QUERY, --socket=QUERY\n"
" QUERY :=
{all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram|tipc}[,QUERY]\n"
@@ -5003,6 +5030,7 @@ static const struct option long_opts[] = {
{ "kill", 0, 0, 'K' },
{ "no-header", 0, 0, 'H' },
{ "xdp", 0, 0, OPT_XDPSOCK},
+ { "one-line", 0, 0, 'O' },
{ 0 }
};
@@ -5018,7 +5046,7 @@ int main(int argc, char *argv[])
int state_filter = 0;
while ((ch = getopt_long(argc, argv,
- "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHS",
+ "dhaletuwxnro460spbEf:miA:D:F:vVzZN:KHSO",
long_opts, NULL)) != EOF) {
switch (ch) {
case 'n':
@@ -5192,6 +5220,9 @@ int main(int argc, char *argv[])
case 'H':
show_header = 0;
break;
+ case 'O':
+ oneline = 1;
+ break;
case 'h':
help();
case '?':
--
2.7.4
