monitor: Don't print newgen message with JSON output

Iff this should be printed, it must adhere to output format settings. In
its current form it breaks JSON syntax, so skip it for non-default
output formats.

Fixes: cb7e02f44d6a6 ("src: enable json echo output when reading native syntax")
Signed-off-by: Phil Sutter <phil@nwl.cc>

diff --git a/src/monitor.c b/src/monitor.c
index af2998d4272b28348d357261656e00d5b84b2b84..047d89db933a4c8bc41e3f614af7b2a7fc12f90d 100644 (file)
--- a/src/monitor.c
+++ b/src/monitor.c
@@ -842,6 +842,9 @@ static int netlink_events_newgen_cb(const struct nlmsghdr *nlh, int type,
        char name[256] = "";
        int genid = -1, pid = -1;
 
+       if (monh->format != NFTNL_OUTPUT_DEFAULT)
+               return MNL_CB_OK;
+
        mnl_attr_for_each(attr, nlh, sizeof(struct nfgenmsg)) {
                switch (mnl_attr_get_type(attr)) {
                case NFTA_GEN_ID: