batman-adv: consolidate duplicated primary_if checking code

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>

diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index fd8d5af..29a5542 100644 (file)
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1585,23 +1585,11 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
        struct hlist_head *head;
        uint32_t i;
        bool is_own;
-       int ret = 0;
        uint8_t *primary_addr;
 
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
-               goto out;
-       }
-
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
 
        primary_addr = primary_if->net_dev->dev_addr;
        seq_printf(seq,
@@ -1628,7 +1616,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }
 
 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
@@ -1643,23 +1631,11 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
        int secs, msecs;
        uint32_t i;
        bool is_own;
-       int ret = 0;
        uint8_t *primary_addr;
 
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
-               goto out;
-       }
-
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
 
        primary_addr = primary_if->net_dev->dev_addr;
        seq_printf(seq,
@@ -1693,5 +1669,5 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }

diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 15d67ab..dd07c7e 100644 (file)
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -477,22 +477,11 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)
        struct batadv_hard_iface *primary_if;
        struct batadv_gw_node *gw_node;
        struct hlist_node *node;
-       int gw_count = 0, ret = 0;
+       int gw_count = 0;
 
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
-
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
-               goto out;
-       }
 
        seq_printf(seq,
                   "      %-12s (%s/%i) %17s [%10s]: gw_class ... [B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n",
@@ -519,7 +508,7 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }
 
 static bool batadv_is_type_dhcprequest(struct sk_buff *skb, int header_len)

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index b4aa470..a4a337d 100644 (file)
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -188,6 +188,42 @@ int batadv_is_my_mac(const uint8_t *addr)
        return 0;
 }
 
+/**
+ * batadv_seq_print_text_primary_if_get - called from debugfs table printing
+ *  function that requires the primary interface
+ * @seq: debugfs table seq_file struct
+ *
+ * Returns primary interface if found or NULL otherwise.
+ */
+struct batadv_hard_iface *
+batadv_seq_print_text_primary_if_get(struct seq_file *seq)
+{
+       struct net_device *net_dev = (struct net_device *)seq->private;
+       struct batadv_priv *bat_priv = netdev_priv(net_dev);
+       struct batadv_hard_iface *primary_if;
+
+       primary_if = batadv_primary_if_get_selected(bat_priv);
+
+       if (!primary_if) {
+               seq_printf(seq,
+                          "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+                          net_dev->name);
+               goto out;
+       }
+
+       if (primary_if->if_status == BATADV_IF_ACTIVE)
+               goto out;
+
+       seq_printf(seq,
+                  "BATMAN mesh %s disabled - primary interface not active\n",
+                  net_dev->name);
+       batadv_hardif_free_ref(primary_if);
+       primary_if = NULL;
+
+out:
+       return primary_if;
+}
+
 static int batadv_recv_unhandled_packet(struct sk_buff *skb,
                                        struct batadv_hard_iface *recv_if)
 {

diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index d57b746..5c0be5b 100644 (file)
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -153,6 +153,8 @@ void batadv_mesh_free(struct net_device *soft_iface);
 void batadv_inc_module_count(void);
 void batadv_dec_module_count(void);
 int batadv_is_my_mac(const uint8_t *addr);
+struct batadv_hard_iface *
+batadv_seq_print_text_primary_if_get(struct seq_file *seq);
 int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
                           struct packet_type *ptype,
                           struct net_device *orig_dev);

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index ac9bdf8..d9c14b8 100644 (file)
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -415,23 +415,10 @@ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset)
        int last_seen_msecs;
        unsigned long last_seen_jiffies;
        uint32_t i;
-       int ret = 0;
 
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
-               goto out;
-       }
-
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
 
        seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n",
                   BATADV_SOURCE_VERSION, primary_if->net_dev->name,
@@ -485,7 +472,7 @@ next:
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }
 
 static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node,

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 112edd3..d87d9b4 100644 (file)
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -434,22 +434,10 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
        struct hlist_node *node;
        struct hlist_head *head;
        uint32_t i;
-       int ret = 0;
-
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
-               goto out;
-       }
 
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
 
        seq_printf(seq,
                   "Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n",
@@ -479,7 +467,7 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset)
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }
 
 static void
@@ -842,22 +830,10 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset)
        struct hlist_node *node;
        struct hlist_head *head;
        uint32_t i;
-       int ret = 0;
-
-       primary_if = batadv_primary_if_get_selected(bat_priv);
-       if (!primary_if) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-                                net_dev->name);
-               goto out;
-       }
 
-       if (primary_if->if_status != BATADV_IF_ACTIVE) {
-               ret = seq_printf(seq,
-                                "BATMAN mesh %s disabled - primary interface not active\n",
-                                net_dev->name);
+       primary_if = batadv_seq_print_text_primary_if_get(seq);
+       if (!primary_if)
                goto out;
-       }
 
        seq_printf(seq,
                   "Globally announced TT entries received via the mesh %s\n",
@@ -881,7 +857,7 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset)
 out:
        if (primary_if)
                batadv_hardif_free_ref(primary_if);
-       return ret;
+       return 0;
 }
 
 /* deletes the orig list of a tt_global_entry */