From: Andreas Langer an.langer@gmx.de
If a packet is too big to be forwarded over an interface it will be fragmented on-the-fly (if fragmentation is enabled).
Signed-off-by: Andreas Langer an.langer@gmx.de Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- drivers/staging/batman-adv/routing.c | 6 ++++++ drivers/staging/batman-adv/unicast.c | 4 ++-- drivers/staging/batman-adv/unicast.h | 2 ++ 3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c index 9b61d6b..1e10111 100644 --- a/drivers/staging/batman-adv/routing.c +++ b/drivers/staging/batman-adv/routing.c @@ -1165,6 +1165,12 @@ static int route_unicast_packet(struct sk_buff *skb,
unicast_packet = (struct unicast_packet *)skb->data;
+ if (unicast_packet->packet_type == BAT_UNICAST && + atomic_read(&bat_priv->frag_enabled) && + skb->len > batman_if->net_dev->mtu) + return frag_send_skb(skb, bat_priv, batman_if, + dstaddr); + /* decrement ttl */ unicast_packet->ttl--;
diff --git a/drivers/staging/batman-adv/unicast.c b/drivers/staging/batman-adv/unicast.c index 57fe2de..12afae6 100644 --- a/drivers/staging/batman-adv/unicast.c +++ b/drivers/staging/batman-adv/unicast.c @@ -206,8 +206,8 @@ out: return ret; }
-static int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct batman_if *batman_if, uint8_t dstaddr[]) +int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv, + struct batman_if *batman_if, uint8_t dstaddr[]) { struct unicast_packet tmp_uc, *unicast_packet; struct sk_buff *frag_skb; diff --git a/drivers/staging/batman-adv/unicast.h b/drivers/staging/batman-adv/unicast.h index 5908b01..e32b786 100644 --- a/drivers/staging/batman-adv/unicast.h +++ b/drivers/staging/batman-adv/unicast.h @@ -29,5 +29,7 @@ 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 batman_if *batman_if, uint8_t dstaddr[]);
#endif /* _NET_BATMAN_ADV_UNICAST_H_ */