diff options
Diffstat (limited to 'net/batman-adv/aggregation.c')
| -rw-r--r-- | net/batman-adv/aggregation.c | 73 |
1 files changed, 43 insertions, 30 deletions
diff --git a/net/batman-adv/aggregation.c b/net/batman-adv/aggregation.c index a8c32030527..69467fe71ff 100644 --- a/net/batman-adv/aggregation.c +++ b/net/batman-adv/aggregation.c @@ -20,28 +20,26 @@ */ #include "main.h" +#include "translation-table.h" #include "aggregation.h" #include "send.h" #include "routing.h" #include "hard-interface.h" -/* calculate the size of the tt information for a given packet */ -static int tt_len(struct batman_packet *batman_packet) -{ - return batman_packet->num_tt * ETH_ALEN; -} - /* return true if new_packet can be aggregated with forw_packet */ -static bool can_aggregate_with(struct batman_packet *new_batman_packet, +static bool can_aggregate_with(const struct batman_packet *new_batman_packet, + struct bat_priv *bat_priv, int packet_len, unsigned long send_time, bool directlink, - struct hard_iface *if_incoming, - struct forw_packet *forw_packet) + const struct hard_iface *if_incoming, + const struct forw_packet *forw_packet) { struct batman_packet *batman_packet = (struct batman_packet *)forw_packet->skb->data; int aggregated_bytes = forw_packet->packet_len + packet_len; + struct hard_iface *primary_if = NULL; + bool res = false; /** * we can aggregate the current packet to this aggregated packet @@ -66,6 +64,10 @@ static bool can_aggregate_with(struct batman_packet *new_batman_packet, * packet */ + primary_if = primary_if_get_selected(bat_priv); + if (!primary_if) + goto out; + /* packets without direct link flag and high TTL * are flooded through the net */ if ((!directlink) && @@ -75,8 +77,10 @@ static bool can_aggregate_with(struct batman_packet *new_batman_packet, /* own packets originating non-primary * interfaces leave only that interface */ ((!forw_packet->own) || - (forw_packet->if_incoming->if_num == 0))) - return true; + (forw_packet->if_incoming == primary_if))) { + res = true; + goto out; + } /* if the incoming packet is sent via this one * interface only - we still can aggregate */ @@ -89,16 +93,22 @@ static bool can_aggregate_with(struct batman_packet *new_batman_packet, * (= secondary interface packets in general) */ (batman_packet->flags & DIRECTLINK || (forw_packet->own && - forw_packet->if_incoming->if_num != 0))) - return true; + forw_packet->if_incoming != primary_if))) { + res = true; + goto out; + } } - return false; +out: + if (primary_if) + hardif_free_ref(primary_if); + return res; } /* create a new aggregated packet and add this packet to it */ -static void new_aggregated_packet(unsigned char *packet_buff, int packet_len, - unsigned long send_time, bool direct_link, +static void new_aggregated_packet(const unsigned char *packet_buff, + int packet_len, unsigned long send_time, + bool direct_link, struct hard_iface *if_incoming, int own_packet) { @@ -118,7 +128,7 @@ static void new_aggregated_packet(unsigned char *packet_buff, int packet_len, } } - forw_packet_aggr = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC); + forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC); if (!forw_packet_aggr) { if (!own_packet) atomic_inc(&bat_priv->batman_queue_left); @@ -150,7 +160,7 @@ static void new_aggregated_packet(unsigned char *packet_buff, int packet_len, forw_packet_aggr->own = own_packet; forw_packet_aggr->if_incoming = if_incoming; forw_packet_aggr->num_packets = 0; - forw_packet_aggr->direct_link_flags = 0; + forw_packet_aggr->direct_link_flags = NO_FLAGS; forw_packet_aggr->send_time = send_time; /* save packet direct link flag status */ @@ -176,8 +186,7 @@ out: /* aggregate a new packet into the existing aggregation */ static void aggregate(struct forw_packet *forw_packet_aggr, - unsigned char *packet_buff, - int packet_len, + const unsigned char *packet_buff, int packet_len, bool direct_link) { unsigned char *skb_buff; @@ -195,7 +204,7 @@ static void aggregate(struct forw_packet *forw_packet_aggr, void add_bat_packet_to_list(struct bat_priv *bat_priv, unsigned char *packet_buff, int packet_len, - struct hard_iface *if_incoming, char own_packet, + struct hard_iface *if_incoming, int own_packet, unsigned long send_time) { /** @@ -215,6 +224,7 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv, hlist_for_each_entry(forw_packet_pos, tmp_node, &bat_priv->forw_bat_list, list) { if (can_aggregate_with(batman_packet, + bat_priv, packet_len, send_time, direct_link, @@ -253,8 +263,9 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv, } /* unpack the aggregated packets and process them one by one */ -void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff, - int packet_len, struct hard_iface *if_incoming) +void receive_aggr_bat_packet(const struct ethhdr *ethhdr, + unsigned char *packet_buff, int packet_len, + struct hard_iface *if_incoming) { struct batman_packet *batman_packet; int buff_pos = 0; @@ -263,18 +274,20 @@ void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff, batman_packet = (struct batman_packet *)packet_buff; do { - /* network to host order for our 32bit seqno, and the - orig_interval. */ + /* network to host order for our 32bit seqno and the + orig_interval */ batman_packet->seqno = ntohl(batman_packet->seqno); + batman_packet->tt_crc = ntohs(batman_packet->tt_crc); tt_buff = packet_buff + buff_pos + BAT_PACKET_LEN; - receive_bat_packet(ethhdr, batman_packet, - tt_buff, tt_len(batman_packet), - if_incoming); - buff_pos += BAT_PACKET_LEN + tt_len(batman_packet); + receive_bat_packet(ethhdr, batman_packet, tt_buff, if_incoming); + + buff_pos += BAT_PACKET_LEN + + tt_len(batman_packet->tt_num_changes); + batman_packet = (struct batman_packet *) (packet_buff + buff_pos); } while (aggregated_packet(buff_pos, packet_len, - batman_packet->num_tt)); + batman_packet->tt_num_changes)); } |