From: Sven Eckelmann sven@narfation.org
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 Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/originator.c | 4 ++-- net/batman-adv/routing.c | 9 +++++---- net/batman-adv/soft-interface.c | 2 +- net/batman-adv/unicast.c | 19 ++++++++++--------- net/batman-adv/unicast.h | 13 +++++++------ 5 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 030666c..9d77ede 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -138,7 +138,7 @@ static void orig_node_free_rcu(struct rcu_head *rcu)
spin_unlock_bh(&orig_node->neigh_list_lock);
- frag_list_free(&orig_node->frag_list); + batadv_frag_list_free(&orig_node->frag_list); batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, "originator timed out");
@@ -372,7 +372,7 @@ static void _purge_orig(struct bat_priv *bat_priv)
if (has_timed_out(orig_node->last_frag_packet, FRAG_TIMEOUT)) - frag_list_free(&orig_node->frag_list); + batadv_frag_list_free(&orig_node->frag_list); } spin_unlock_bh(list_lock); } diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 8fb5ae3..4103f68 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -850,15 +850,16 @@ static int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if) if (unicast_packet->header.packet_type == BAT_UNICAST && atomic_read(&bat_priv->fragmentation) && skb->len > neigh_node->if_incoming->net_dev->mtu) { - ret = frag_send_skb(skb, bat_priv, - neigh_node->if_incoming, neigh_node->addr); + ret = batadv_frag_send_skb(skb, bat_priv, + neigh_node->if_incoming, + neigh_node->addr); goto out; }
if (unicast_packet->header.packet_type == BAT_UNICAST_FRAG && frag_can_reassemble(skb, neigh_node->if_incoming->net_dev->mtu)) {
- ret = frag_reassemble_skb(skb, bat_priv, &new_skb); + ret = batadv_frag_reassemble_skb(skb, bat_priv, &new_skb);
if (ret == NET_RX_DROP) goto out; @@ -1013,7 +1014,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, /* packet for me */ if (is_my_mac(unicast_packet->dest)) {
- ret = frag_reassemble_skb(skb, bat_priv, &new_skb); + ret = batadv_frag_reassemble_skb(skb, bat_priv, &new_skb);
if (ret == NET_RX_DROP) return NET_RX_DROP; diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index a4b5e64..9fd19257 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -237,7 +237,7 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) goto dropped; }
- ret = unicast_send_skb(skb, bat_priv); + ret = batadv_unicast_send_skb(skb, bat_priv); if (ret != 0) goto dropped_freed; } diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index 5e699db..e9d3bdd 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -101,7 +101,7 @@ static int frag_create_buffer(struct list_head *head) for (i = 0; i < FRAG_BUFFER_SIZE; i++) { tfp = kmalloc(sizeof(*tfp), GFP_ATOMIC); if (!tfp) { - frag_list_free(head); + batadv_frag_list_free(head); return -ENOMEM; } tfp->skb = NULL; @@ -151,7 +151,7 @@ mov_tail: return NULL; }
-void frag_list_free(struct list_head *head) +void batadv_frag_list_free(struct list_head *head) { struct frag_packet_list_entry *pf, *tmp_pf;
@@ -172,8 +172,8 @@ void frag_list_free(struct list_head *head) * or the skb could be reassembled (skb_new will point to the new packet and * skb was freed) */ -int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct sk_buff **new_skb) +int batadv_frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + struct sk_buff **new_skb) { struct orig_node *orig_node; struct frag_packet_list_entry *tmp_frag_entry; @@ -216,8 +216,8 @@ out: return ret; }
-int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct hard_iface *hard_iface, const uint8_t dstaddr[]) +int batadv_frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + struct hard_iface *hard_iface, const uint8_t dstaddr[]) { struct unicast_packet tmp_uc, *unicast_packet; struct hard_iface *primary_if; @@ -283,7 +283,7 @@ out: return ret; }
-int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) +int batadv_unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) { struct ethhdr *ethhdr = (struct ethhdr *)skb->data; struct unicast_packet *unicast_packet; @@ -342,8 +342,9 @@ find_router: neigh_node->if_incoming->net_dev->mtu) { /* send frag skb decreases ttl */ unicast_packet->header.ttl++; - ret = frag_send_skb(skb, bat_priv, - neigh_node->if_incoming, neigh_node->addr); + ret = batadv_frag_send_skb(skb, bat_priv, + neigh_node->if_incoming, + neigh_node->addr); goto out; }
diff --git a/net/batman-adv/unicast.h b/net/batman-adv/unicast.h index a9faf6b..657fe73 100644 --- a/net/batman-adv/unicast.h +++ b/net/batman-adv/unicast.h @@ -27,12 +27,13 @@ #define FRAG_TIMEOUT 10000 /* purge frag list entries after time in ms */ #define FRAG_BUFFER_SIZE 6 /* number of list elements in buffer */
-int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct sk_buff **new_skb); -void frag_list_free(struct list_head *head); -int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv); -int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct hard_iface *hard_iface, const uint8_t dstaddr[]); +int batadv_frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + struct sk_buff **new_skb); +void batadv_frag_list_free(struct list_head *head); +int batadv_unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv); +int batadv_frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + struct hard_iface *hard_iface, + const uint8_t dstaddr[]);
static inline int frag_can_reassemble(const struct sk_buff *skb, int mtu) {