batman-adv can be compiled as part of the kernel instead of an module. In that case the linker will see all non-static symbols of batman-adv and all other non-static symbols of the kernel. This could lead to symbol collisions. A prefix for the batman-adv symbols that defines their private namespace avoids such a problem.
Reported-by: David Miller davem@davemloft.net Signed-off-by: Sven Eckelmann sven@narfation.org --- bat_debugfs.c | 3 +- bridge_loop_avoidance.c | 28 +++++++++--------- bridge_loop_avoidance.h | 73 ++++++++++++++++++++++++----------------------- hard-interface.c | 2 +- main.c | 4 +-- routing.c | 6 ++-- soft-interface.c | 4 +-- translation-table.c | 6 ++-- 8 files changed, 65 insertions(+), 61 deletions(-)
diff --git a/bat_debugfs.c b/bat_debugfs.c index 3b3790e..900c640 100644 --- a/bat_debugfs.c +++ b/bat_debugfs.c @@ -249,7 +249,8 @@ static int transtable_global_open(struct inode *inode, struct file *file) static int bla_claim_table_open(struct inode *inode, struct file *file) { struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, bla_claim_table_seq_print_text, net_dev); + return single_open(file, batadv_bla_claim_table_seq_print_text, + net_dev); } #endif
diff --git a/bridge_loop_avoidance.c b/bridge_loop_avoidance.c index 314e37b..b0561e3 100644 --- a/bridge_loop_avoidance.c +++ b/bridge_loop_avoidance.c @@ -1019,9 +1019,9 @@ purge_now: * Update the backbone gateways when the own orig address changes. * */ -void bla_update_orig_address(struct bat_priv *bat_priv, - struct hard_iface *primary_if, - struct hard_iface *oldif) +void batadv_bla_update_orig_address(struct bat_priv *bat_priv, + struct hard_iface *primary_if, + struct hard_iface *oldif) { struct backbone_gw *backbone_gw; struct hlist_node *node; @@ -1136,7 +1136,7 @@ static struct lock_class_key claim_hash_lock_class_key; static struct lock_class_key backbone_hash_lock_class_key;
/* initialize all bla structures */ -int bla_init(struct bat_priv *bat_priv) +int batadv_bla_init(struct bat_priv *bat_priv) { int i; uint8_t claim_dest[ETH_ALEN] = {0xff, 0x43, 0x05, 0x00, 0x00, 0x00}; @@ -1199,9 +1199,9 @@ int bla_init(struct bat_priv *bat_priv) * **/
-int bla_check_bcast_duplist(struct bat_priv *bat_priv, - struct bcast_packet *bcast_packet, - int hdr_size) +int batadv_bla_check_bcast_duplist(struct bat_priv *bat_priv, + struct bcast_packet *bcast_packet, + int hdr_size) { int i, length, curr; uint8_t *content; @@ -1260,7 +1260,7 @@ int bla_check_bcast_duplist(struct bat_priv *bat_priv, * */
-int bla_is_backbone_gw_orig(struct bat_priv *bat_priv, uint8_t *orig) +int batadv_bla_is_backbone_gw_orig(struct bat_priv *bat_priv, uint8_t *orig) { struct hashtable_t *hash = bat_priv->backbone_hash; struct hlist_head *head; @@ -1301,8 +1301,8 @@ int bla_is_backbone_gw_orig(struct bat_priv *bat_priv, uint8_t *orig) * returns 0. * */ -int bla_is_backbone_gw(struct sk_buff *skb, - struct orig_node *orig_node, int hdr_size) +int batadv_bla_is_backbone_gw(struct sk_buff *skb, + struct orig_node *orig_node, int hdr_size) { struct ethhdr *ethhdr; struct vlan_ethhdr *vhdr; @@ -1339,7 +1339,7 @@ int bla_is_backbone_gw(struct sk_buff *skb, }
/* free all bla structures (for softinterface free or module unload) */ -void bla_free(struct bat_priv *bat_priv) +void batadv_bla_free(struct bat_priv *bat_priv) { struct hard_iface *primary_if;
@@ -1374,7 +1374,7 @@ void bla_free(struct bat_priv *bat_priv) * process the skb. * */ -int bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid) +int batadv_bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid) { struct ethhdr *ethhdr; struct claim search_claim, *claim = NULL; @@ -1463,7 +1463,7 @@ out: * process the skb. * */ -int bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid) +int batadv_bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid) { struct ethhdr *ethhdr; struct claim search_claim, *claim = NULL; @@ -1537,7 +1537,7 @@ out: return ret; }
-int bla_claim_table_seq_print_text(struct seq_file *seq, void *offset) +int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset) { struct net_device *net_dev = (struct net_device *)seq->private; struct bat_priv *bat_priv = netdev_priv(net_dev); diff --git a/bridge_loop_avoidance.h b/bridge_loop_avoidance.h index e39f93a..3fafed8 100644 --- a/bridge_loop_avoidance.h +++ b/bridge_loop_avoidance.h @@ -23,73 +23,76 @@ #define _NET_BATMAN_ADV_BLA_H_
#ifdef CONFIG_BATMAN_ADV_BLA -int bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid); -int bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid); -int bla_is_backbone_gw(struct sk_buff *skb, - struct orig_node *orig_node, int hdr_size); -int bla_claim_table_seq_print_text(struct seq_file *seq, void *offset); -int bla_is_backbone_gw_orig(struct bat_priv *bat_priv, uint8_t *orig); -int bla_check_bcast_duplist(struct bat_priv *bat_priv, - struct bcast_packet *bcast_packet, int hdr_size); -void bla_update_orig_address(struct bat_priv *bat_priv, - struct hard_iface *primary_if, - struct hard_iface *oldif); -int bla_init(struct bat_priv *bat_priv); -void bla_free(struct bat_priv *bat_priv); +int batadv_bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid); +int batadv_bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid); +int batadv_bla_is_backbone_gw(struct sk_buff *skb, + struct orig_node *orig_node, int hdr_size); +int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset); +int batadv_bla_is_backbone_gw_orig(struct bat_priv *bat_priv, uint8_t *orig); +int batadv_bla_check_bcast_duplist(struct bat_priv *bat_priv, + struct bcast_packet *bcast_packet, + int hdr_size); +void batadv_bla_update_orig_address(struct bat_priv *bat_priv, + struct hard_iface *primary_if, + struct hard_iface *oldif); +int batadv_bla_init(struct bat_priv *bat_priv); +void batadv_bla_free(struct bat_priv *bat_priv);
#define BLA_CRC_INIT 0 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
-static inline int bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, +static inline int batadv_bla_rx(struct bat_priv *bat_priv, struct sk_buff *skb, + short vid) +{ + return 0; +} + +static inline int batadv_bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, short vid) { return 0; }
-static inline int bla_tx(struct bat_priv *bat_priv, struct sk_buff *skb, - short vid) +static inline int batadv_bla_is_backbone_gw(struct sk_buff *skb, + struct orig_node *orig_node, + int hdr_size) { return 0; }
-static inline int bla_is_backbone_gw(struct sk_buff *skb, - struct orig_node *orig_node, - int hdr_size) +static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, + void *offset) { return 0; }
-static inline int bla_claim_table_seq_print_text(struct seq_file *seq, - void *offset) +static inline int batadv_bla_is_backbone_gw_orig(struct bat_priv *bat_priv, + uint8_t *orig) { return 0; }
-static inline int bla_is_backbone_gw_orig(struct bat_priv *bat_priv, - uint8_t *orig) +static inline int +batadv_bla_check_bcast_duplist(struct bat_priv *bat_priv, + struct bcast_packet *bcast_packet, + int hdr_size) { return 0; }
-static inline int bla_check_bcast_duplist(struct bat_priv *bat_priv, - struct bcast_packet *bcast_packet, - int hdr_size) -{ - return 0; -} - -static inline void bla_update_orig_address(struct bat_priv *bat_priv, - struct hard_iface *primary_if, - struct hard_iface *oldif) +static inline void +batadv_bla_update_orig_address(struct bat_priv *bat_priv, + struct hard_iface *primary_if, + struct hard_iface *oldif) { }
-static inline int bla_init(struct bat_priv *bat_priv) +static inline int batadv_bla_init(struct bat_priv *bat_priv) { return 1; }
-static inline void bla_free(struct bat_priv *bat_priv) +static inline void batadv_bla_free(struct bat_priv *bat_priv) { }
diff --git a/hard-interface.c b/hard-interface.c index ceaf632..a42b2d3 100644 --- a/hard-interface.c +++ b/hard-interface.c @@ -121,7 +121,7 @@ static void primary_if_update_addr(struct bat_priv *bat_priv, memcpy(vis_packet->sender_orig, primary_if->net_dev->dev_addr, ETH_ALEN);
- bla_update_orig_address(bat_priv, primary_if, oldif); + batadv_bla_update_orig_address(bat_priv, primary_if, oldif); out: if (primary_if) hardif_free_ref(primary_if); diff --git a/main.c b/main.c index 3bddd63..eb1d266 100644 --- a/main.c +++ b/main.c @@ -125,7 +125,7 @@ int mesh_init(struct net_device *soft_iface) if (ret < 0) goto err;
- ret = bla_init(bat_priv); + ret = batadv_bla_init(bat_priv); if (ret < 0) goto err;
@@ -154,7 +154,7 @@ void mesh_free(struct net_device *soft_iface)
tt_free(bat_priv);
- bla_free(bat_priv); + batadv_bla_free(bat_priv);
free_percpu(bat_priv->bat_counters);
diff --git a/routing.c b/routing.c index 9032708..97901f3 100644 --- a/routing.c +++ b/routing.c @@ -674,7 +674,7 @@ int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if) * roaming advertisement from it, as it has the same * entries as we have. */ - if (bla_is_backbone_gw_orig(bat_priv, roam_adv_packet->src)) + if (batadv_bla_is_backbone_gw_orig(bat_priv, roam_adv_packet->src)) goto out;
orig_node = orig_hash_find(bat_priv, roam_adv_packet->src); @@ -1089,7 +1089,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if) spin_unlock_bh(&orig_node->bcast_seqno_lock);
/* check whether this has been sent by another originator before */ - if (bla_check_bcast_duplist(bat_priv, bcast_packet, hdr_size)) + if (batadv_bla_check_bcast_duplist(bat_priv, bcast_packet, hdr_size)) goto out;
/* rebroadcast packet */ @@ -1098,7 +1098,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if) /* don't hand the broadcast up if it is from an originator * from the same backbone. */ - if (bla_is_backbone_gw(skb, orig_node, hdr_size)) + if (batadv_bla_is_backbone_gw(skb, orig_node, hdr_size)) goto out;
/* broadcast for me */ diff --git a/soft-interface.c b/soft-interface.c index 6f21e65..92956c6 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -164,7 +164,7 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) goto dropped; }
- if (bla_tx(bat_priv, skb, vid)) + if (batadv_bla_tx(bat_priv, skb, vid)) goto dropped;
/* Register the client MAC in the transtable */ @@ -322,7 +322,7 @@ void interface_rx(struct net_device *soft_iface, /* Let the bridge loop avoidance check the packet. If will * not handle it, we can safely push it up. */ - if (bla_rx(bat_priv, skb, vid)) + if (batadv_bla_rx(bat_priv, skb, vid)) goto out;
netif_rx(skb); diff --git a/translation-table.c b/translation-table.c index b16fb81..9b8107a 100644 --- a/translation-table.c +++ b/translation-table.c @@ -1674,7 +1674,7 @@ bool send_tt_response(struct bat_priv *bat_priv, { if (is_my_mac(tt_request->dst)) { /* don't answer backbone gws! */ - if (bla_is_backbone_gw_orig(bat_priv, tt_request->src)) + if (batadv_bla_is_backbone_gw_orig(bat_priv, tt_request->src)) return true;
return send_my_tt_response(bat_priv, tt_request); @@ -1786,7 +1786,7 @@ void handle_tt_response(struct bat_priv *bat_priv, (tt_response->flags & TT_FULL_TABLE ? 'F' : '.'));
/* we should have never asked a backbone gw */ - if (bla_is_backbone_gw_orig(bat_priv, tt_response->src)) + if (batadv_bla_is_backbone_gw_orig(bat_priv, tt_response->src)) goto out;
orig_node = orig_hash_find(bat_priv, tt_response->src); @@ -2163,7 +2163,7 @@ void tt_update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node, bool full_table = true;
/* don't care about a backbone gateways updates. */ - if (bla_is_backbone_gw_orig(bat_priv, orig_node->orig)) + if (batadv_bla_is_backbone_gw_orig(bat_priv, orig_node->orig)) return;
/* orig table not initialised AND first diff is in the OGM OR the ttvn