On Thu, Jul 18, 2002 at 10:11:17AM +0200, Miha Jemec wrote:
> The routine now loops between nodes: Frame->Ethernet->Internet Protocol->and
> upper layer protocols. How can I get the items or list of one node, let's say
> rtp?
The "process_node()" in "proto_hier_stats.c" only scans the top-level
nodes.
It's also recursive, which I don't think it needs to be.
What you might want to do would be to get the ID value for the "rtp"
protocol:
hfinfo = proto_registrar_get_byname("rtp");
if (hfinfo == NULL)
give up, somehow "rtp" didn't get registered;
proto_rtp = hfinfo->id;
and the hfinfo value for "rtp.ssrc":
hfinfo_ssrc = proto_registrar_get_byname("rtp.ssrc");
if (hfinfo_ssrc == NULL)
give up, somehow "rtp.ssrc" didn't get registered;
and then have your equivalent to "process_tree()" just have a loop
something like:
for (ptree_node = g_node_first_child(protocol_tree);
ptree_node != NULL;
ptree_node = g_node_next_sibling(ptree_node)) {
/*
* Is this a subtree for RTP?
*/
finfo = PITEM_FINFO(ptree_node);
if (finfo->hfinfo->parent == proto_rtp) {
/*
* Yes.
* Now scan all the nodes in it until you
* find an "ssrc" node, and return its value.
*/
finfo = find_node(ptree_node, hfinfo_ssrc);
if (finfo != NULL) {
/*
* We found it.
*/
get the value from "finfo";
}
}
}
with "find_node()" being something that recursively walks the tree
specified by its first argument looking for a node whose "finfo->hfinfo"
equals its second argument.
