Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[deliverable/linux.git] / net / batman-adv / bat_iv_ogm.c
index 469daabd90c7bf28572c3f9066ee2146ed590fd1..b02b75dae3a8a5dfeb015838ba5eca2ecb5d6109 100644 (file)
@@ -166,13 +166,15 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
        int16_t buff_pos;
        struct batadv_ogm_packet *batadv_ogm_packet;
        struct sk_buff *skb;
+       uint8_t *packet_pos;
 
        if (hard_iface->if_status != BATADV_IF_ACTIVE)
                return;
 
        packet_num = 0;
        buff_pos = 0;
-       batadv_ogm_packet = (struct batadv_ogm_packet *)forw_packet->skb->data;
+       packet_pos = forw_packet->skb->data;
+       batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
 
        /* adjust all flags and log packets */
        while (batadv_iv_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
@@ -181,15 +183,17 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
                /* we might have aggregated direct link packets with an
                 * ordinary base packet
                 */
-               if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
-                   (forw_packet->if_incoming == hard_iface))
+               if (forw_packet->direct_link_flags & BIT(packet_num) &&
+                   forw_packet->if_incoming == hard_iface)
                        batadv_ogm_packet->flags |= BATADV_DIRECTLINK;
                else
                        batadv_ogm_packet->flags &= ~BATADV_DIRECTLINK;
 
-               fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
-                                                           "Sending own" :
-                                                           "Forwarding"));
+               if (packet_num > 0 || !forw_packet->own)
+                       fwd_str = "Forwarding";
+               else
+                       fwd_str = "Sending own";
+
                batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
                           "%s %spacket (originator %pM, seqno %u, TQ %d, TTL %d, IDF %s, ttvn %d) on interface %s [%pM]\n",
                           fwd_str, (packet_num > 0 ? "aggregated " : ""),
@@ -204,8 +208,8 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet,
                buff_pos += BATADV_OGM_HLEN;
                buff_pos += batadv_tt_len(batadv_ogm_packet->tt_num_changes);
                packet_num++;
-               batadv_ogm_packet = (struct batadv_ogm_packet *)
-                                       (forw_packet->skb->data + buff_pos);
+               packet_pos = forw_packet->skb->data + buff_pos;
+               batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
        }
 
        /* create clone because function is called more than once */
@@ -227,9 +231,10 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet)
        struct batadv_hard_iface *primary_if = NULL;
        struct batadv_ogm_packet *batadv_ogm_packet;
        unsigned char directlink;
+       uint8_t *packet_pos;
 
-       batadv_ogm_packet = (struct batadv_ogm_packet *)
-                                               (forw_packet->skb->data);
+       packet_pos = forw_packet->skb->data;
+       batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
        directlink = (batadv_ogm_packet->flags & BATADV_DIRECTLINK ? 1 : 0);
 
        if (!forw_packet->if_incoming) {
@@ -454,6 +459,7 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr,
                                    int packet_len, bool direct_link)
 {
        unsigned char *skb_buff;
+       unsigned long new_direct_link_flag;
 
        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
        memcpy(skb_buff, packet_buff, packet_len);
@@ -461,9 +467,10 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr,
        forw_packet_aggr->num_packets++;
 
        /* save packet direct link flag status */
-       if (direct_link)
-               forw_packet_aggr->direct_link_flags |=
-                       (1 << forw_packet_aggr->num_packets);
+       if (direct_link) {
+               new_direct_link_flag = BIT(forw_packet_aggr->num_packets);
+               forw_packet_aggr->direct_link_flags |= new_direct_link_flag;
+       }
 }
 
 static void batadv_iv_ogm_queue_add(struct batadv_priv *bat_priv,
@@ -586,6 +593,8 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
        struct batadv_ogm_packet *batadv_ogm_packet;
        struct batadv_hard_iface *primary_if;
        int vis_server, tt_num_changes = 0;
+       uint32_t seqno;
+       uint8_t bandwidth;
 
        vis_server = atomic_read(&bat_priv->vis_mode);
        primary_if = batadv_primary_if_get_selected(bat_priv);
@@ -599,12 +608,12 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
        batadv_ogm_packet = (struct batadv_ogm_packet *)hard_iface->packet_buff;
 
        /* change sequence number to network order */
-       batadv_ogm_packet->seqno =
-                       htonl((uint32_t)atomic_read(&hard_iface->seqno));
+       seqno = (uint32_t)atomic_read(&hard_iface->seqno);
+       batadv_ogm_packet->seqno = htonl(seqno);
        atomic_inc(&hard_iface->seqno);
 
-       batadv_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);
-       batadv_ogm_packet->tt_crc = htons(bat_priv->tt_crc);
+       batadv_ogm_packet->ttvn = atomic_read(&bat_priv->tt.vn);
+       batadv_ogm_packet->tt_crc = htons(bat_priv->tt.local_crc);
        if (tt_num_changes >= 0)
                batadv_ogm_packet->tt_num_changes = tt_num_changes;
 
@@ -613,12 +622,13 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
        else
                batadv_ogm_packet->flags &= ~BATADV_VIS_SERVER;
 
-       if ((hard_iface == primary_if) &&
-           (atomic_read(&bat_priv->gw_mode) == BATADV_GW_MODE_SERVER))
-               batadv_ogm_packet->gw_flags =
-                               (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
-       else
+       if (hard_iface == primary_if &&
+           atomic_read(&bat_priv->gw_mode) == BATADV_GW_MODE_SERVER) {
+               bandwidth = (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
+               batadv_ogm_packet->gw_flags = bandwidth;
+       } else {
                batadv_ogm_packet->gw_flags = BATADV_NO_FLAGS;
+       }
 
        batadv_slide_own_bcast_window(hard_iface);
        batadv_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff,
@@ -645,6 +655,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
        int if_num;
        uint8_t sum_orig, sum_neigh;
        uint8_t *neigh_addr;
+       uint8_t tq_avg;
 
        batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
                   "update_originator(): Searching and updating originator entry of received packet\n");
@@ -668,8 +679,8 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
                spin_lock_bh(&tmp_neigh_node->lq_update_lock);
                batadv_ring_buffer_set(tmp_neigh_node->tq_recv,
                                       &tmp_neigh_node->tq_index, 0);
-               tmp_neigh_node->tq_avg =
-                       batadv_ring_buffer_avg(tmp_neigh_node->tq_recv);
+               tq_avg = batadv_ring_buffer_avg(tmp_neigh_node->tq_recv);
+               tmp_neigh_node->tq_avg = tq_avg;
                spin_unlock_bh(&tmp_neigh_node->lq_update_lock);
        }
 
@@ -836,8 +847,10 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
        spin_unlock_bh(&orig_node->ogm_cnt_lock);
 
        /* pay attention to not get a value bigger than 100 % */
-       total_count = (orig_eq_count > neigh_rq_count ?
-                      neigh_rq_count : orig_eq_count);
+       if (orig_eq_count > neigh_rq_count)
+               total_count = neigh_rq_count;
+       else
+               total_count = orig_eq_count;
 
        /* if we have too few packets (too less data) we set tq_own to zero
         * if we receive too few packets it is not considered bidirectional
@@ -911,6 +924,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
        int set_mark, ret = -1;
        uint32_t seqno = ntohl(batadv_ogm_packet->seqno);
        uint8_t *neigh_addr;
+       uint8_t packet_count;
 
        orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
        if (!orig_node)
@@ -945,9 +959,9 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
                                                     tmp_neigh_node->real_bits,
                                                     seq_diff, set_mark);
 
-               tmp_neigh_node->real_packet_count =
-                       bitmap_weight(tmp_neigh_node->real_bits,
-                                     BATADV_TQ_LOCAL_WINDOW_SIZE);
+               packet_count = bitmap_weight(tmp_neigh_node->real_bits,
+                                            BATADV_TQ_LOCAL_WINDOW_SIZE);
+               tmp_neigh_node->real_packet_count = packet_count;
        }
        rcu_read_unlock();
 
@@ -1164,9 +1178,12 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
        /* if sender is a direct neighbor the sender mac equals
         * originator mac
         */
-       orig_neigh_node = (is_single_hop_neigh ?
-                          orig_node :
-                          batadv_get_orig_node(bat_priv, ethhdr->h_source));
+       if (is_single_hop_neigh)
+               orig_neigh_node = orig_node;
+       else
+               orig_neigh_node = batadv_get_orig_node(bat_priv,
+                                                      ethhdr->h_source);
+
        if (!orig_neigh_node)
                goto out;
 
@@ -1252,6 +1269,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
        int buff_pos = 0, packet_len;
        unsigned char *tt_buff, *packet_buff;
        bool ret;
+       uint8_t *packet_pos;
 
        ret = batadv_check_management_packet(skb, if_incoming, BATADV_OGM_HLEN);
        if (!ret)
@@ -1282,8 +1300,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
                buff_pos += BATADV_OGM_HLEN;
                buff_pos += batadv_tt_len(batadv_ogm_packet->tt_num_changes);
 
-               batadv_ogm_packet = (struct batadv_ogm_packet *)
-                                               (packet_buff + buff_pos);
+               packet_pos = packet_buff + buff_pos;
+               batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
        } while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len,
                                           batadv_ogm_packet->tt_num_changes));
 
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