We are trying to compile an older version of tipc with the RHEL 7.5 kernel
(3.10.0.862.14.4). We are getting the following error:
/root/rpmbuild/BUILD/tipc/tipc/netlink.c: In function 'tipc_netlink_start':
/root/rpmbuild/BUILD/tipc/tipc/netlink.c:90:2: error: implicit declaration of
function 'genl_register_family_with_ops' [-Werror=implicit-function-declaration]
res = genl_register_family_with_ops(&tipc_genl_family,
This code compiled fine with RHEL 7.4. Based on what we found on the internet
it seems that genl_register_family_with_ops function has been removed and we're
supposed to use genl_register_family instead. However, the details of what
needs to be passed to the function, specifically the contents of the
tipc_genl_family struct are unclear. This issue has been resolved in the tipc
version that corresponds to the 4.10 kernel, however there is a big delta in
the code between that version and the version we are using. Below is the
snippet of code in question, we would appreciate any input as what to needs to
change in this code:
static struct genl_family tipc_genl_family = {
.id = GENL_ID_GENERATE,
.name = TIPC_GENL_NAME,
.version = TIPC_GENL_VERSION,
.hdrsize = TIPC_GENL_HDRLEN,
.maxattr = 0,
};
static struct genl_ops tipc_genl_ops = {
.cmd = TIPC_GENL_CMD,
.doit = handle_cmd,
};
static int tipc_genl_family_registered;
int tipc_netlink_start(void)
{
int res;
res = genl_register_family_with_ops(&tipc_genl_family,
&tipc_genl_ops, 1);
if (res) {
pr_err("Failed to register netlink interface\n");
return res;
}
tipc_genl_family_registered = 1;
return 0;
}
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