diff options
Diffstat (limited to 'net/batman-adv/bat_iv_ogm.c')
| -rw-r--r-- | net/batman-adv/bat_iv_ogm.c | 51 |
1 files changed, 29 insertions, 22 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index b02b75dae3a8..9f3925a85aab 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -57,20 +57,22 @@ out: static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface) { struct batadv_ogm_packet *batadv_ogm_packet; + unsigned char *ogm_buff; uint32_t random_seqno; int res = -ENOMEM; /* randomize initial seqno to avoid collision */ get_random_bytes(&random_seqno, sizeof(random_seqno)); - atomic_set(&hard_iface->seqno, random_seqno); + atomic_set(&hard_iface->bat_iv.ogm_seqno, random_seqno); - hard_iface->packet_len = BATADV_OGM_HLEN; - hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC); - - if (!hard_iface->packet_buff) + hard_iface->bat_iv.ogm_buff_len = BATADV_OGM_HLEN; + ogm_buff = kmalloc(hard_iface->bat_iv.ogm_buff_len, GFP_ATOMIC); + if (!ogm_buff) goto out; - batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff; + hard_iface->bat_iv.ogm_buff = ogm_buff; + + batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff; batadv_ogm_packet->header.packet_type = BATADV_IV_OGM; batadv_ogm_packet->header.version = BATADV_COMPAT_VERSION; batadv_ogm_packet->header.ttl = 2; @@ -87,15 +89,16 @@ out: static void batadv_iv_ogm_iface_disable(struct batadv_hard_iface *hard_iface) { - kfree(hard_iface->packet_buff); - hard_iface->packet_buff = NULL; + kfree(hard_iface->bat_iv.ogm_buff); + hard_iface->bat_iv.ogm_buff = NULL; } static void batadv_iv_ogm_iface_update_mac(struct batadv_hard_iface *hard_iface) { struct batadv_ogm_packet *batadv_ogm_packet; + unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff; - batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff; + batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff; memcpy(batadv_ogm_packet->orig, hard_iface->net_dev->dev_addr, ETH_ALEN); memcpy(batadv_ogm_packet->prev_sender, @@ -106,8 +109,9 @@ static void batadv_iv_ogm_primary_iface_set(struct batadv_hard_iface *hard_iface) { struct batadv_ogm_packet *batadv_ogm_packet; + unsigned char *ogm_buff = hard_iface->bat_iv.ogm_buff; - batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff; + batadv_ogm_packet = (struct batadv_ogm_packet *)ogm_buff; batadv_ogm_packet->flags = BATADV_PRIMARIES_FIRST_HOP; batadv_ogm_packet->header.ttl = BATADV_TTL; } @@ -407,9 +411,11 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, if ((atomic_read(&bat_priv->aggregated_ogms)) && (packet_len < BATADV_MAX_AGGREGATION_BYTES)) - skb_size = BATADV_MAX_AGGREGATION_BYTES + ETH_HLEN; + skb_size = BATADV_MAX_AGGREGATION_BYTES; else - skb_size = packet_len + ETH_HLEN; + skb_size = packet_len; + + skb_size += ETH_HLEN + NET_IP_ALIGN; forw_packet_aggr->skb = dev_alloc_skb(skb_size); if (!forw_packet_aggr->skb) { @@ -418,7 +424,7 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, kfree(forw_packet_aggr); goto out; } - skb_reserve(forw_packet_aggr->skb, ETH_HLEN); + skb_reserve(forw_packet_aggr->skb, ETH_HLEN + NET_IP_ALIGN); INIT_HLIST_NODE(&forw_packet_aggr->list); @@ -590,8 +596,10 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node, static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) { struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); + unsigned char **ogm_buff = &hard_iface->bat_iv.ogm_buff; struct batadv_ogm_packet *batadv_ogm_packet; struct batadv_hard_iface *primary_if; + int *ogm_buff_len = &hard_iface->bat_iv.ogm_buff_len; int vis_server, tt_num_changes = 0; uint32_t seqno; uint8_t bandwidth; @@ -600,17 +608,16 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) primary_if = batadv_primary_if_get_selected(bat_priv); if (hard_iface == primary_if) - tt_num_changes = batadv_tt_append_diff(bat_priv, - &hard_iface->packet_buff, - &hard_iface->packet_len, + tt_num_changes = batadv_tt_append_diff(bat_priv, ogm_buff, + ogm_buff_len, BATADV_OGM_HLEN); - batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff; + batadv_ogm_packet = (struct batadv_ogm_packet *)(*ogm_buff); /* change sequence number to network order */ - seqno = (uint32_t)atomic_read(&hard_iface->seqno); + seqno = (uint32_t)atomic_read(&hard_iface->bat_iv.ogm_seqno); batadv_ogm_packet->seqno = htonl(seqno); - atomic_inc(&hard_iface->seqno); + atomic_inc(&hard_iface->bat_iv.ogm_seqno); batadv_ogm_packet->ttvn = atomic_read(&bat_priv->tt.vn); batadv_ogm_packet->tt_crc = htons(bat_priv->tt.local_crc); @@ -631,8 +638,8 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) } batadv_slide_own_bcast_window(hard_iface); - batadv_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff, - hard_iface->packet_len, hard_iface, 1, + batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff, + hard_iface->bat_iv.ogm_buff_len, hard_iface, 1, batadv_iv_ogm_emit_send_time(bat_priv)); if (primary_if) @@ -1015,7 +1022,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, return; /* could be changed by schedule_own_packet() */ - if_incoming_seqno = atomic_read(&if_incoming->seqno); + if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno); if (batadv_ogm_packet->flags & BATADV_DIRECTLINK) has_directlink_flag = 1; |