[PATCH iproute2] misc/ss: tcp cwnd should be unsigned

[Hangbin Liu]

tcp->snd_cwd is a u32, but ss treats it like a signed int. This may
results in negative bandwidth calculations.

Signed-off-by: Hangbin Liu <liuhang...@gmail.com>
---
 misc/ss.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/misc/ss.c b/misc/ss.c
index 3b268d9..f67557a 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -754,11 +754,12 @@ struct tcpstat {
        int                 probes;
        char                cong_alg[16];
        double              rto, ato, rtt, rttvar;
-       int                 qack, cwnd, ssthresh, backoff;
+       int                 qack, ssthresh, backoff;
        double              send_bps;
        int                 snd_wscale;
        int                 rcv_wscale;
        int                 mss;
+       unsigned int        cwnd;
        unsigned int        lastsnd;
        unsigned int        lastrcv;
        unsigned int        lastack;
@@ -1756,7 +1757,7 @@ static void tcp_stats_print(struct tcpstat *s)
        if (s->mss)
                printf(" mss:%d", s->mss);
        if (s->cwnd)
-               printf(" cwnd:%d", s->cwnd);
+               printf(" cwnd:%u", s->cwnd);
        if (s->ssthresh)
                printf(" ssthresh:%d", s->ssthresh);
 
@@ -1856,7 +1857,7 @@ static int tcp_show_line(char *line, const struct filter 
*f, int family)
                return 0;
 
        opt[0] = 0;
-       n = sscanf(data, "%x %x:%x %x:%x %x %d %d %u %d %llx %d %d %d %d %d 
%[^\n]\n",
+       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,
-- 
2.5.5