net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely)

Some code here depends on CONFIG_KMOD to not try to load
protocol modules or similar, replace by CONFIG_MODULES
where more than just request_module depends on CONFIG_KMOD
and and also use try_then_request_module in ebtables.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index b12dae2..abef493 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -613,9 +613,7 @@
 	if (colon)
 		*colon = 0;
 
-#ifdef CONFIG_KMOD
 	dev_load(net, ifr.ifr_name);
-#endif
 
 	switch (cmd) {
 	case SIOCGIFADDR:	/* Get interface address */
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 89cb047..564230d 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -53,11 +53,9 @@
 
 static const struct inet_diag_handler *inet_diag_lock_handler(int type)
 {
-#ifdef CONFIG_KMOD
 	if (!inet_diag_table[type])
 		request_module("net-pf-%d-proto-%d-type-%d", PF_NETLINK,
 			       NETLINK_INET_DIAG, type);
-#endif
 
 	mutex_lock(&inet_diag_table_mutex);
 	if (!inet_diag_table[type])
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 6a25082..4ec5b4e 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -115,7 +115,7 @@
 
 	spin_lock(&tcp_cong_list_lock);
 	ca = tcp_ca_find(name);
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
 	if (!ca && capable(CAP_SYS_MODULE)) {
 		spin_unlock(&tcp_cong_list_lock);
 
@@ -244,7 +244,7 @@
 	if (ca == icsk->icsk_ca_ops)
 		goto out;
 
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
 	/* not found attempt to autoload module */
 	if (!ca && capable(CAP_SYS_MODULE)) {
 		rcu_read_unlock();