ipv4: Remove old route notifications and convert listeners

Unlike mlxsw, the other listeners to the FIB notification chain do not
require any special modifications as they never considered multiple
identical routes.

This patch removes the old route notifications and converts all the
listeners to use the new replace / delete notifications.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
index b70afa310ad2a919272563a61aef4757c4ab9640..416676c35b1f9d24df99c798a09e7e3851480590 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c
@@ -200,8 +200,6 @@ static void mlx5_lag_fib_update(struct work_struct *work)
        rtnl_lock();
        switch (fib_work->event) {
        case FIB_EVENT_ENTRY_REPLACE: /* fall through */
-       case FIB_EVENT_ENTRY_APPEND: /* fall through */
-       case FIB_EVENT_ENTRY_ADD: /* fall through */
        case FIB_EVENT_ENTRY_DEL:
                mlx5_lag_fib_route_event(ldev, fib_work->event,
                                         fib_work->fen_info.fi);
@@ -259,8 +257,6 @@ static int mlx5_lag_fib_event(struct notifier_block *nb,
 
        switch (event) {
        case FIB_EVENT_ENTRY_REPLACE: /* fall through */
-       case FIB_EVENT_ENTRY_APPEND: /* fall through */
-       case FIB_EVENT_ENTRY_ADD: /* fall through */
        case FIB_EVENT_ENTRY_DEL:
                fen_info = container_of(info, struct fib_entry_notifier_info,
                                        info);

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 396b27b9cdb454e16233528df85bf33984014fb0..bba1c8215d06cb4027bf7a04b0683267e8f9b58d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -6007,14 +6007,14 @@ static void mlxsw_sp_router_fib4_event_work(struct work_struct *work)
        mlxsw_sp_span_respin(mlxsw_sp);
 
        switch (fib_work->event) {
-       case FIB_EVENT_ENTRY_REPLACE_TMP:
+       case FIB_EVENT_ENTRY_REPLACE:
                err = mlxsw_sp_router_fib4_replace(mlxsw_sp,
                                                   &fib_work->fen_info);
                if (err)
                        mlxsw_sp_router_fib_abort(mlxsw_sp);
                fib_info_put(fib_work->fen_info.fi);
                break;
-       case FIB_EVENT_ENTRY_DEL_TMP:
+       case FIB_EVENT_ENTRY_DEL:
                mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info);
                fib_info_put(fib_work->fen_info.fi);
                break;
@@ -6111,8 +6111,8 @@ static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work,
        struct fib_nh_notifier_info *fnh_info;
 
        switch (fib_work->event) {
-       case FIB_EVENT_ENTRY_REPLACE_TMP: /* fall through */
-       case FIB_EVENT_ENTRY_DEL_TMP:
+       case FIB_EVENT_ENTRY_REPLACE: /* fall through */
+       case FIB_EVENT_ENTRY_DEL:
                fen_info = container_of(info, struct fib_entry_notifier_info,
                                        info);
                fib_work->fen_info = *fen_info;
@@ -6243,8 +6243,7 @@ static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
                                                     router->mlxsw_sp);
                return notifier_from_errno(err);
        case FIB_EVENT_ENTRY_ADD: /* fall through */
-       case FIB_EVENT_ENTRY_REPLACE: /* fall through */
-       case FIB_EVENT_ENTRY_REPLACE_TMP:
+       case FIB_EVENT_ENTRY_REPLACE:
                if (router->aborted) {
                        NL_SET_ERR_MSG_MOD(info->extack, "FIB offload was aborted. Not configuring route");
                        return notifier_from_errno(-EINVAL);

diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index bc4f951315da8515edf45f3a79ab3252be584405..7585cd2270ba49c1bcbbad37e94dc7b716784212 100644 (file)
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -2159,7 +2159,7 @@ static void rocker_router_fib_event_work(struct work_struct *work)
        /* Protect internal structures from changes */
        rtnl_lock();
        switch (fib_work->event) {
-       case FIB_EVENT_ENTRY_ADD:
+       case FIB_EVENT_ENTRY_REPLACE:
                err = rocker_world_fib4_add(rocker, &fib_work->fen_info);
                if (err)
                        rocker_world_fib4_abort(rocker);
@@ -2201,7 +2201,7 @@ static int rocker_router_fib_event(struct notifier_block *nb,
        fib_work->event = event;
 
        switch (event) {
-       case FIB_EVENT_ENTRY_ADD: /* fall through */
+       case FIB_EVENT_ENTRY_REPLACE: /* fall through */
        case FIB_EVENT_ENTRY_DEL:
                if (info->family == AF_INET) {
                        struct fib_entry_notifier_info *fen_info = ptr;

diff --git a/drivers/net/netdevsim/fib.c b/drivers/net/netdevsim/fib.c
index 13540dee7364695fe3c06bdcd11d433d4f224757..4e02a4231fcb9c8f6b062e990299bab6b7eba61b 100644 (file)
--- a/drivers/net/netdevsim/fib.c
+++ b/drivers/net/netdevsim/fib.c
@@ -177,10 +177,10 @@ static int nsim_fib_event_nb(struct notifier_block *nb, unsigned long event,
                                          event == FIB_EVENT_RULE_ADD);
                break;
 
+       case FIB_EVENT_ENTRY_REPLACE:  /* fall through */
        case FIB_EVENT_ENTRY_ADD:  /* fall through */
        case FIB_EVENT_ENTRY_DEL:
-               err = nsim_fib_event(data, info,
-                                    event == FIB_EVENT_ENTRY_ADD);
+               err = nsim_fib_event(data, info, event != FIB_EVENT_ENTRY_DEL);
                break;
        }
 

diff --git a/include/net/fib_notifier.h b/include/net/fib_notifier.h
index b3c54325caec057bf579f9befc6986d5a77eafed..6d59221ff05ad605dea6bf0e5f3d6b9d24237537 100644 (file)
--- a/include/net/fib_notifier.h
+++ b/include/net/fib_notifier.h
@@ -23,8 +23,6 @@ enum fib_event_type {
        FIB_EVENT_NH_DEL,
        FIB_EVENT_VIF_ADD,
        FIB_EVENT_VIF_DEL,
-       FIB_EVENT_ENTRY_REPLACE_TMP,
-       FIB_EVENT_ENTRY_DEL_TMP,
 };
 
 struct fib_notifier_ops {

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 3f2ff97618ec7cf6dc92f6c631f38005d2ef645c..b92a42433a7dbff8235cd229b3faa514da8ed93d 100644 (file)
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1127,7 +1127,6 @@ static void fib_remove_alias(struct trie *t, struct key_vector *tp,
 int fib_table_insert(struct net *net, struct fib_table *tb,
                     struct fib_config *cfg, struct netlink_ext_ack *extack)
 {
-       enum fib_event_type event = FIB_EVENT_ENTRY_ADD;
        struct trie *t = (struct trie *)tb->tb_data;
        struct fib_alias *fa, *new_fa;
        struct key_vector *l, *tp;
@@ -1226,19 +1225,13 @@ int fib_table_insert(struct net *net, struct fib_table *tb,
                                           tb->tb_id, true) == fa) {
                                enum fib_event_type fib_event;
 
-                               fib_event = FIB_EVENT_ENTRY_REPLACE_TMP;
+                               fib_event = FIB_EVENT_ENTRY_REPLACE;
                                err = call_fib_entry_notifiers(net, fib_event,
                                                               key, plen,
                                                               new_fa, extack);
                                if (err)
                                        goto out_free_new_fa;
                        }
-                       err = call_fib_entry_notifiers(net,
-                                                      FIB_EVENT_ENTRY_REPLACE,
-                                                      key, plen, new_fa,
-                                                      extack);
-                       if (err)
-                               goto out_free_new_fa;
 
                        rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen,
                                  tb->tb_id, &cfg->fc_nlinfo, nlflags);
@@ -1260,12 +1253,10 @@ int fib_table_insert(struct net *net, struct fib_table *tb,
                if (fa_match)
                        goto out;
 
-               if (cfg->fc_nlflags & NLM_F_APPEND) {
-                       event = FIB_EVENT_ENTRY_APPEND;
+               if (cfg->fc_nlflags & NLM_F_APPEND)
                        nlflags |= NLM_F_APPEND;
-               } else {
+               else
                        fa = fa_first;
-               }
        }
        err = -ENOENT;
        if (!(cfg->fc_nlflags & NLM_F_CREATE))
@@ -1299,15 +1290,12 @@ int fib_table_insert(struct net *net, struct fib_table *tb,
            new_fa) {
                enum fib_event_type fib_event;
 
-               fib_event = FIB_EVENT_ENTRY_REPLACE_TMP;
+               fib_event = FIB_EVENT_ENTRY_REPLACE;
                err = call_fib_entry_notifiers(net, fib_event, key, plen,
                                               new_fa, extack);
                if (err)
                        goto out_remove_new_fa;
        }
-       err = call_fib_entry_notifiers(net, event, key, plen, new_fa, extack);
-       if (err)
-               goto out_remove_new_fa;
 
        if (!plen)
                tb->tb_num_default++;
@@ -1590,10 +1578,10 @@ static void fib_notify_alias_delete(struct net *net, u32 key,
        fa_next = hlist_entry_safe(fa_to_delete->fa_list.next,
                                   struct fib_alias, fa_list);
        if (fa_next && fa_next->fa_slen == slen && fa_next->tb_id == tb_id) {
-               fib_event = FIB_EVENT_ENTRY_REPLACE_TMP;
+               fib_event = FIB_EVENT_ENTRY_REPLACE;
                fa_to_notify = fa_next;
        } else {
-               fib_event = FIB_EVENT_ENTRY_DEL_TMP;
+               fib_event = FIB_EVENT_ENTRY_DEL;
                fa_to_notify = fa_to_delete;
        }
        call_fib_entry_notifiers(net, fib_event, key, KEYLENGTH - slen,
@@ -1654,8 +1642,6 @@ int fib_table_delete(struct net *net, struct fib_table *tb,
                return -ESRCH;
 
        fib_notify_alias_delete(net, key, &l->leaf, fa_to_delete, extack);
-       call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, key, plen,
-                                fa_to_delete, extack);
        rtmsg_fib(RTM_DELROUTE, htonl(key), fa_to_delete, plen, tb->tb_id,
                  &cfg->fc_nlinfo, 0);
 
@@ -1981,10 +1967,6 @@ int fib_table_flush(struct net *net, struct fib_table *tb, bool flush_all)
 
                        fib_notify_alias_delete(net, n->key, &n->leaf, fa,
                                                NULL);
-                       call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_DEL,
-                                                n->key,
-                                                KEYLENGTH - fa->fa_slen, fa,
-                                                NULL);
                        hlist_del_rcu(&fa->fa_list);
                        fib_release_info(fa->fa_info);
                        alias_free_mem_rcu(fa);
@@ -2095,17 +2077,11 @@ static int fib_leaf_notify(struct key_vector *l, struct fib_table *tb,
                if (tb->tb_id != fa->tb_id)
                        continue;
 
-               err = call_fib_entry_notifier(nb, FIB_EVENT_ENTRY_ADD, l->key,
-                                             KEYLENGTH - fa->fa_slen,
-                                             fa, extack);
-               if (err)
-                       return err;
-
                if (fa->fa_slen == last_slen)
                        continue;
 
                last_slen = fa->fa_slen;
-               err = call_fib_entry_notifier(nb, FIB_EVENT_ENTRY_REPLACE_TMP,
+               err = call_fib_entry_notifier(nb, FIB_EVENT_ENTRY_REPLACE,
                                              l->key, KEYLENGTH - fa->fa_slen,
                                              fa, extack);
                if (err)