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>

20 files changed, 20 insertions, 46 deletions

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index f6348e078aa4..8f9431a12c6f 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -37,10 +37,7 @@
 #include <linux/poll.h>
 #include <net/sock.h>
 #include <asm/ioctls.h>
-
-#if defined(CONFIG_KMOD)
 #include <linux/kmod.h>
-#endif
 
 #include <net/bluetooth/bluetooth.h>
 
@@ -145,11 +142,8 @@ static int bt_sock_create(struct net *net, struct socket *sock, int proto)
         if (proto < 0 || proto >= BT_MAX_PROTO)
                 return -EINVAL;
 
-#if defined(CONFIG_KMOD)
-        if (!bt_proto[proto]) {
+        if (!bt_proto[proto])
                 request_module("bt-proto-%d", proto);
-        }
-#endif
 
         err = -EPROTONOSUPPORT;
 
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 5bb88eb0aad4..0fa208e86405 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -305,23 +305,14 @@ find_inlist_lock_noload(struct list_head *head, const char *name, int *error,
         return NULL;
 }
 
-#ifndef CONFIG_KMOD
-#define find_inlist_lock(h,n,p,e,m) find_inlist_lock_noload((h),(n),(e),(m))
-#else
 static void *
 find_inlist_lock(struct list_head *head, const char *name, const char *prefix,
    int *error, struct mutex *mutex)
 {
-        void *ret;
-
-        ret = find_inlist_lock_noload(head, name, error, mutex);
-        if (!ret) {
-                request_module("%s%s", prefix, name);
-                ret = find_inlist_lock_noload(head, name, error, mutex);
-        }
-        return ret;
+        return try_then_request_module(
+                        find_inlist_lock_noload(head, name, error, mutex),
+                        "%s%s", prefix, name);
 }
-#endif
 
 static inline struct ebt_table *
 find_table_lock(const char *name, int *error, struct mutex *mutex)
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 8035fbf526ae..7d4d2b3c137e 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -128,8 +128,8 @@ static int can_create(struct net *net, struct socket *sock, int protocol)
         if (net != &init_net)
                 return -EAFNOSUPPORT;
 
-#ifdef CONFIG_KMOD
-        /* try to load protocol module, when CONFIG_KMOD is defined */
+#ifdef CONFIG_MODULES
+        /* try to load protocol module kernel is modular */
         if (!proto_tab[protocol]) {
                 err = request_module("can-proto-%d", protocol);
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 1408a083fe4e..868ec0ba8b77 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4956,8 +4956,6 @@ EXPORT_SYMBOL(br_fdb_get_hook);
 EXPORT_SYMBOL(br_fdb_put_hook);
 #endif
 
-#ifdef CONFIG_KMOD
 EXPORT_SYMBOL(dev_load);
-#endif
 
 EXPORT_PER_CPU_SYMBOL(softnet_data);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 3630131fa1fa..31f29d2989fd 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1040,7 +1040,7 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
         struct nlattr *linkinfo[IFLA_INFO_MAX+1];
         int err;
 
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
 replay:
 #endif
         err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
@@ -1129,7 +1129,7 @@ replay:
                         return -EOPNOTSUPP;
 
                 if (!ops) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                         if (kind[0]) {
                                 __rtnl_unlock();
                                 request_module("rtnl-link-%s", kind);
diff --git a/net/dccp/ccid.c b/net/dccp/ccid.c
index 4809753d12ae..8fe931a3d7a1 100644
--- a/net/dccp/ccid.c
+++ b/net/dccp/ccid.c
@@ -154,7 +154,7 @@ struct ccid *ccid_new(unsigned char id, struct sock *sk, int rx, gfp_t gfp)
         struct ccid *ccid = NULL;
 
         ccids_read_lock();
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
         if (ccids[id] == NULL) {
                 /* We only try to load if in process context */
                 ccids_read_unlock();
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index ba352588e344..4fd4a4f74e82 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -490,9 +490,7 @@ int dn_dev_ioctl(unsigned int cmd, void __user *arg)
                 return -EFAULT;
         ifr->ifr_name[IFNAMSIZ-1] = 0;
 
-#ifdef CONFIG_KMOD
         dev_load(&init_net, ifr->ifr_name);
-#endif
 
         switch(cmd) {
                 case SIOCGIFADDR:
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index b12dae2b0b2d..abef49376ac8 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -613,9 +613,7 @@ int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
         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 89cb047ab314..564230dabcb8 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -53,11 +53,9 @@ static DEFINE_MUTEX(inet_diag_table_mutex);
 
 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 6a250828b767..4ec5b4e97c4e 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -115,7 +115,7 @@ int tcp_set_default_congestion_control(const char *name)
 
         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 @@ int tcp_set_congestion_control(struct sock *sk, const char *name)
         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();
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 08e82d64eb6f..2e4ad9671e19 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -822,7 +822,7 @@ ctnetlink_parse_nat_setup(struct nf_conn *ct,
 
         parse_nat_setup = rcu_dereference(nfnetlink_parse_nat_setup_hook);
         if (!parse_nat_setup) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                 rcu_read_unlock();
                 nfnl_unlock();
                 if (request_module("nf-nat-ipv4") < 0) {
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 4739f9f961d8..9c0ba17a1ddb 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -137,7 +137,7 @@ static int nfnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 replay:
         ss = nfnetlink_get_subsys(type);
         if (!ss) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                 nfnl_unlock();
                 request_module("nfnetlink-subsys-%d", NFNL_SUBSYS_ID(type));
                 nfnl_lock();
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 2fd8afac5f71..480184a857d2 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -435,7 +435,7 @@ static int netlink_create(struct net *net, struct socket *sock, int protocol)
                 return -EPROTONOSUPPORT;
 
         netlink_lock_table();
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
         if (!nl_table[protocol].registered) {
                 netlink_unlock_table();
                 request_module("net-pf-%d-proto-%d", PF_NETLINK, protocol);
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 9e9c6fce11aa..b9d97effebe3 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -67,11 +67,10 @@ static int pn_socket_create(struct net *net, struct socket *sock, int protocol)
         }
 
         pnp = phonet_proto_get(protocol);
-#ifdef CONFIG_KMOD
         if (pnp == NULL &&
             request_module("net-pf-%d-proto-%d", PF_PHONET, protocol) == 0)
                 pnp = phonet_proto_get(protocol);
-#endif
+
         if (pnp == NULL)
                 return -EPROTONOSUPPORT;
         if (sock->type != pnp->sock_type) {
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 9974b3f04f05..8f457f1e0acf 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -494,7 +494,7 @@ struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est,
 
         a_o = tc_lookup_action_n(act_name);
         if (a_o == NULL) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                 rtnl_unlock();
                 request_module("act_%s", act_name);
                 rtnl_lock();
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 8eb79e92e94c..16e7ac9774e5 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -227,7 +227,7 @@ replay:
                 err = -ENOENT;
                 tp_ops = tcf_proto_lookup_ops(tca[TCA_KIND]);
                 if (tp_ops == NULL) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                         struct nlattr *kind = tca[TCA_KIND];
                         char name[IFNAMSIZ];
 
diff --git a/net/sched/ematch.c b/net/sched/ematch.c
index 5e6f82e0e6f3..e82519e548d7 100644
--- a/net/sched/ematch.c
+++ b/net/sched/ematch.c
@@ -224,7 +224,7 @@ static int tcf_em_validate(struct tcf_proto *tp,
 
                 if (em->ops == NULL) {
                         err = -ENOENT;
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
                         __rtnl_unlock();
                         request_module("ematch-kind-%u", em_hdr->kind);
                         rtnl_lock();
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 1122c952aa99..b16ad2972c6b 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -764,7 +764,7 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
         struct qdisc_size_table *stab;
 
         ops = qdisc_lookup_ops(kind);
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
         if (ops == NULL && kind != NULL) {
                 char name[IFNAMSIZ];
                 if (nla_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) {
diff --git a/net/socket.c b/net/socket.c
index 3e8d4e35c08f..2b7a4b5c9b72 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1142,7 +1142,7 @@ static int __sock_create(struct net *net, int family, int type, int protocol,
 
         sock->type = type;
 
-#if defined(CONFIG_KMOD)
+#ifdef CONFIG_MODULES
         /* Attempt to load a protocol module if the find failed.
          *
          * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 6bfea9ed6869..436bf1b4b76c 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -83,10 +83,8 @@ rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
         if (flavor >= RPC_AUTH_MAXFLAVOR)
                 goto out;
 
-#ifdef CONFIG_KMOD
         if ((ops = auth_flavors[flavor]) == NULL)
                 request_module("rpc-auth-%u", flavor);
-#endif
         spin_lock(&rpc_authflavor_lock);
         ops = auth_flavors[flavor];
         if (ops == NULL || !try_module_get(ops->owner)) {