[PATCH iproute2 master v3] bridge: fdb show: fix fdb entry state output for json context

[Julien Fortin]

From: Julien Fortin <jul...@cumulusnetworks.com>

bridge json fdb show is printing an incorrect / non-machine readable
value, when using -j (json output) we are expecting machine readable
data that shouldn't require special handling/parsing.

$ bridge -j fdb show | \
python -c \
'import sys,json;print(json.dumps(json.loads(sys.stdin.read()),indent=4))'
[
    {
        "master": "br0",
        "mac": "56:23:28:4f:4f:e5",
        "flags": [],
        "ifname": "vx0",
        "state": "state=0x80"  <<<<<<<<< with the patch: "state": "0x80"
    }
]

Fixes: c7c1a1ef51aea7c ("bridge: colorize output and use JSON print library")

Signed-off-by: Julien Fortin <jul...@cumulusnetworks.com>
---
 bridge/fdb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/bridge/fdb.c b/bridge/fdb.c
index 710dfc99..d59bfb34 100644
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -62,7 +62,10 @@ static const char *state_n2a(unsigned int s)
        if (s & NUD_REACHABLE)
                return "";
 
-       sprintf(buf, "state=%#x", s);
+       if (is_json_context())
+               sprintf(buf, "%#x", s);
+       else
+               sprintf(buf, "state=%#x", s);
        return buf;
 }
 
-- 
2.27.0