From ab2602787f45480cbb28d75aa5b85923bfc33ffe Mon Sep 17 00:00:00 2001
From: nrbffs <38812627+nrbffs@users.noreply.github.com>
Date: Wed, 11 Dec 2019 14:21:49 +0100
Subject: [PATCH] radv-filter: print gateway list
---
.../src/gluon-radv-filterd.c | 55 +++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/package/gluon-radv-filterd/src/gluon-radv-filterd.c b/package/gluon-radv-filterd/src/gluon-radv-filterd.c
index ed090c460..233b7b889 100644
--- a/package/gluon-radv-filterd/src/gluon-radv-filterd.c
+++ b/package/gluon-radv-filterd/src/gluon-radv-filterd.c
@@ -403,6 +403,54 @@ static void expire_routers(void) {
}
}
+static int parse_gws_global(struct nl_msg *msg,
+ void *arg __attribute__((unused)))
+{
+ static const enum batadv_nl_attrs mandatory[] = {
+ BATADV_ATTR_ORIG_ADDRESS,
+ BATADV_ATTR_FLAG_BEST,
+ };
+ struct nlattr *attrs[BATADV_ATTR_MAX + 1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct ether_addr mac_a, mac_b;
+ struct genlmsghdr *ghdr;
+ struct router *router;
+ uint8_t *addr;
+ uint8_t *best;
+
+ // parse netlink entry
+ if (!genlmsg_valid_hdr(nlh, 0))
+ return NL_OK;
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ghdr->cmd != BATADV_CMD_GET_GATEWAYS) {
+ DEBUG_MSG("cmd is not BATADV_CMD_GET_GATEWAYS but %d", ghdr->cmd);
+ return NL_OK;
+ }
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), batadv_genl_policy)) {
+ DEBUG_MSG("parsing failed");
+ return NL_OK;
+ }
+
+ if (batadv_genl_missing_attrs(attrs, mandatory, ARRAY_SIZE(mandatory))) {
+ DEBUG_MSG("missing attrs in netlink response");
+ return NL_OK;
+ }
+
+ orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
+ best = nla_data(attrs[BATADV_ATTR_FLAG_BEST]);
+
+ MAC2ETHER(mac_a, addr);
+
+ DEBUG_MSG("Found gateway " F_MAC " (best=%d)"
+ F_MAC_VAR(mac_a), *best);
+
+ return NL_OK;
+}
+
static int parse_tt_global(struct nl_msg *msg,
void *arg __attribute__((unused)))
{
@@ -573,6 +621,13 @@ static void update_tqs(void) {
update_originators = true;
}
+ opts.err = 0;
+ ret = batadv_genl_query(G.mesh_iface,
+ BATADV_CMD_GET_GATEWAYS,
+ parse_gws_global, NLM_F_DUMP, &opts);
+ if (ret < 0)
+ fprintf(stderr, "Parsing of gateways failed\n");
+
// translate all router's MAC addresses to originators simultaneously
if (update_originators) {
opts.err = 0;
--
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