The following commit has been merged in the master branch: commit ad8b4f43a973cbb58f651df88133f750db0da45e Author: Marek Lindner lindner_marek@yahoo.de Date: Fri Feb 18 12:28:08 2011 +0000

batman-adv: separate ethernet comparing calls from hash functions

Note: The function compare_ether_addr() provided by the Linux kernel requires aligned memory.

Signed-off-by: Marek Lindner lindner_marek@yahoo.de

diff --git a/hard-interface.c b/hard-interface.c index 8982485..de9bd36 100644 --- a/hard-interface.c +++ b/hard-interface.c @@ -187,7 +187,7 @@ static void check_known_mac_addr(struct net_device *net_dev) if (batman_if->net_dev == net_dev) continue;

- if (!compare_orig(batman_if->net_dev->dev_addr, + if (!compare_eth(batman_if->net_dev->dev_addr, net_dev->dev_addr)) continue;

diff --git a/main.c b/main.c index 658ad5a..09c21f2 100644 --- a/main.c +++ b/main.c @@ -160,7 +160,7 @@ int is_my_mac(uint8_t *addr) if (batman_if->if_status != IF_ACTIVE) continue;

- if (compare_orig(batman_if->net_dev->dev_addr, addr)) { + if (compare_eth(batman_if->net_dev->dev_addr, addr)) { rcu_read_unlock(); return 1; } diff --git a/main.h b/main.h index bd8470d..57f0d24 100644 --- a/main.h +++ b/main.h @@ -167,4 +167,14 @@ static inline void bat_dbg(char type __always_unused, pr_err("%s: " fmt, _netdev->name, ## arg); \ } while (0)

+/** + * returns 1 if they are the same ethernet addr + * + * note: can't use compare_ether_addr() as it requires aligned memory + */ +static inline int compare_eth(void *data1, void *data2) +{ + return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); +} + #endif /* _NET_BATMAN_ADV_MAIN_H_ */ diff --git a/routing.c b/routing.c index a2b770a..892b463 100644 --- a/routing.c +++ b/routing.c @@ -159,8 +159,8 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, hlist_for_each_entry_rcu(tmp_neigh_node, node, &orig_node->neigh_list, list) {

- if (compare_orig(tmp_neigh_node->addr, - orig_neigh_node->orig) && + if (compare_eth(tmp_neigh_node->addr, + orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } @@ -188,8 +188,8 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, hlist_for_each_entry_rcu(tmp_neigh_node, node, &orig_neigh_node->neigh_list, list) {

- if (compare_orig(tmp_neigh_node->addr, - orig_neigh_node->orig) && + if (compare_eth(tmp_neigh_node->addr, + orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } @@ -300,8 +300,8 @@ static void bonding_candidate_add(struct orig_node *orig_node, spin_lock_bh(&orig_node->neigh_list_lock);

/* only consider if it has the same primary address ... */ - if (!compare_orig(orig_node->orig, - neigh_node->orig_node->primary_addr)) + if (!compare_eth(orig_node->orig, + neigh_node->orig_node->primary_addr)) goto candidate_del;

if (!orig_node->router) @@ -330,7 +330,7 @@ static void bonding_candidate_add(struct orig_node *orig_node, continue;

if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) || - (compare_orig(neigh_node->addr, tmp_neigh_node->addr))) { + (compare_eth(neigh_node->addr, tmp_neigh_node->addr))) { interference_candidate = 1; break; } @@ -390,7 +390,7 @@ static void update_orig(struct bat_priv *bat_priv, rcu_read_lock(); hlist_for_each_entry_rcu(tmp_neigh_node, node, &orig_node->neigh_list, list) { - if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && + if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming) && atomic_inc_not_zero(&tmp_neigh_node->refcount)) { if (neigh_node) @@ -575,7 +575,7 @@ static char count_real_packets(struct ethhdr *ethhdr, orig_node->last_real_seqno, batman_packet->seqno);

- if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && + if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming)) set_mark = 1; else @@ -640,8 +640,8 @@ void receive_bat_packet(struct ethhdr *ethhdr,

has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);

- is_single_hop_neigh = (compare_orig(ethhdr->h_source, - batman_packet->orig) ? 1 : 0); + is_single_hop_neigh = (compare_eth(ethhdr->h_source, + batman_packet->orig) ? 1 : 0);

bat_dbg(DBG_BATMAN, bat_priv, "Received BATMAN packet via NB: %pM, IF: %s [%pM] " @@ -661,19 +661,19 @@ void receive_bat_packet(struct ethhdr *ethhdr, if (batman_if->soft_iface != if_incoming->soft_iface) continue;

- if (compare_orig(ethhdr->h_source, - batman_if->net_dev->dev_addr)) + if (compare_eth(ethhdr->h_source, + batman_if->net_dev->dev_addr)) is_my_addr = 1;

- if (compare_orig(batman_packet->orig, - batman_if->net_dev->dev_addr)) + if (compare_eth(batman_packet->orig, + batman_if->net_dev->dev_addr)) is_my_orig = 1;

- if (compare_orig(batman_packet->prev_sender, - batman_if->net_dev->dev_addr)) + if (compare_eth(batman_packet->prev_sender, + batman_if->net_dev->dev_addr)) is_my_oldorig = 1;

- if (compare_orig(ethhdr->h_source, broadcast_addr)) + if (compare_eth(ethhdr->h_source, broadcast_addr)) is_broadcast = 1; } rcu_read_unlock(); @@ -713,8 +713,8 @@ void receive_bat_packet(struct ethhdr *ethhdr, /* if received seqno equals last send seqno save new * seqno for bidirectional check */ if (has_directlink_flag && - compare_orig(if_incoming->net_dev->dev_addr, - batman_packet->orig) && + compare_eth(if_incoming->net_dev->dev_addr, + batman_packet->orig) && (batman_packet->seqno - if_incoming_seqno + 2 == 0)) { offset = if_incoming->if_num * NUM_WORDS;

@@ -761,11 +761,11 @@ void receive_bat_packet(struct ethhdr *ethhdr, /* avoid temporary routing loops */ if ((orig_node->router) && (orig_node->router->orig_node->router) && - (compare_orig(orig_node->router->addr, - batman_packet->prev_sender)) && - !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) && - (compare_orig(orig_node->router->addr, - orig_node->router->orig_node->router->addr))) { + (compare_eth(orig_node->router->addr, + batman_packet->prev_sender)) && + !(compare_eth(batman_packet->orig, batman_packet->prev_sender)) && + (compare_eth(orig_node->router->addr, + orig_node->router->orig_node->router->addr))) { bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: ignoring all rebroadcast packets that " "may make me loop (sender: %pM)\n", ethhdr->h_source); @@ -1146,14 +1146,13 @@ struct neigh_node *find_router(struct bat_priv *bat_priv,

/* if we have something in the primary_addr, we can search * for a potential bonding candidate. */ - if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0) + if (compare_eth(router_orig->primary_addr, zero_mac)) goto return_router;

/* find the orig_node which has the primary interface. might * even be the same as our router_orig in many cases */

- if (memcmp(router_orig->primary_addr, - router_orig->orig, ETH_ALEN) == 0) { + if (compare_eth(router_orig->primary_addr, router_orig->orig)) { primary_orig_node = router_orig; } else { primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig, diff --git a/send.c b/send.c index 8314276..f0232ad 100644 --- a/send.c +++ b/send.c @@ -326,7 +326,7 @@ void schedule_forward_packet(struct orig_node *orig_node, if ((orig_node->router) && (orig_node->router->tq_avg != 0)) {

/* rebroadcast ogm of best ranking neighbor as is */ - if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) { + if (!compare_eth(orig_node->router->addr, ethhdr->h_source)) { batman_packet->tq = orig_node->router->tq_avg;

if (orig_node->router->last_ttl) diff --git a/soft-interface.c b/soft-interface.c index c30ccd6..bea2dcf 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -132,7 +132,7 @@ static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv, rcu_read_lock(); hlist_for_each_entry_rcu(softif_neigh, node, &bat_priv->softif_neigh_list, list) { - if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0) + if (!compare_eth(softif_neigh->addr, addr)) continue;

if (softif_neigh->vid != vid) diff --git a/translation-table.c b/translation-table.c index 28a212a..b323c24 100644 --- a/translation-table.c +++ b/translation-table.c @@ -101,7 +101,7 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr) hna_local_entry->last_seen = jiffies;

/* the batman interface mac address should never be purged */ - if (compare_orig(addr, soft_iface->dev_addr)) + if (compare_eth(addr, soft_iface->dev_addr)) hna_local_entry->never_purge = 1; else hna_local_entry->never_purge = 0; diff --git a/vis.c b/vis.c index c1c3258..6435886 100644 --- a/vis.c +++ b/vis.c @@ -76,7 +76,7 @@ static int vis_info_cmp(void *data1, void *data2) d2 = data2; p1 = (struct vis_packet *)d1->skb_packet->data; p2 = (struct vis_packet *)d2->skb_packet->data; - return compare_orig(p1->vis_orig, p2->vis_orig); + return compare_eth(p1->vis_orig, p2->vis_orig); }

/* hash function to choose an entry in a hash table of given size */ @@ -114,7 +114,7 @@ static void vis_data_insert_interface(const uint8_t *interface, struct hlist_node *pos;

hlist_for_each_entry(entry, pos, if_list, list) { - if (compare_orig(entry->addr, (void *)interface)) + if (compare_eth(entry->addr, (void *)interface)) return; }

@@ -166,7 +166,7 @@ static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry, /* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */ if (primary && entry->quality == 0) return sprintf(buff, "HNA %pM, ", entry->dest); - else if (compare_orig(entry->src, src)) + else if (compare_eth(entry->src, src)) return sprintf(buff, "TQ %pM %d, ", entry->dest, entry->quality);

@@ -213,7 +213,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) if (entries[j].quality == 0) continue; compare = - compare_orig(entries[j].src, packet->vis_orig); + compare_eth(entries[j].src, packet->vis_orig); vis_data_insert_interface(entries[j].src, &vis_if_list, compare); @@ -223,7 +223,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) buf_size += 18 + 26 * packet->entries;

/* add primary/secondary records */ - if (compare_orig(entry->addr, packet->vis_orig)) + if (compare_eth(entry->addr, packet->vis_orig)) buf_size += vis_data_count_prim_sec(&vis_if_list);

@@ -259,7 +259,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) if (entries[j].quality == 0) continue; compare = - compare_orig(entries[j].src, packet->vis_orig); + compare_eth(entries[j].src, packet->vis_orig); vis_data_insert_interface(entries[j].src, &vis_if_list, compare); @@ -277,7 +277,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) entry->primary);

/* add primary/secondary records */ - if (compare_orig(entry->addr, packet->vis_orig)) + if (compare_eth(entry->addr, packet->vis_orig)) buff_pos += vis_data_read_prim_sec(buff + buff_pos, &vis_if_list); @@ -345,7 +345,7 @@ static int recv_list_is_in(struct bat_priv *bat_priv,

spin_lock_bh(&bat_priv->vis_list_lock); list_for_each_entry(entry, recv_list, list) { - if (memcmp(entry->mac, mac, ETH_ALEN) == 0) { + if (compare_eth(entry->mac, mac)) { spin_unlock_bh(&bat_priv->vis_list_lock); return 1; } @@ -615,7 +615,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv) if (!neigh_node) continue;

- if (!compare_orig(neigh_node->addr, orig_node->orig)) + if (!compare_eth(neigh_node->addr, orig_node->orig)) continue;

if (neigh_node->if_incoming->if_status != IF_ACTIVE)