From 01c4224b51feba2ba64d070ab9f4aa32c9d0bb29 Mon Sep 17 00:00:00 2001 From: Marek Lindner Date: Mon, 28 Nov 2011 21:31:55 +0800 Subject: batman-adv: convert batman iv algorithm to use dynamic infrastructure Signed-off-by: Marek Lindner --- net/batman-adv/bat_iv_ogm.c | 179 +++++++++++++++++++++++--------------------- 1 file changed, 94 insertions(+), 85 deletions(-) (limited to 'net/batman-adv/bat_iv_ogm.c') diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 1847efaaa6fd..1c483a5dd808 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -20,7 +20,6 @@ */ #include "main.h" -#include "bat_ogm.h" #include "translation-table.h" #include "ring_buffer.h" #include "originator.h" @@ -31,7 +30,7 @@ #include "send.h" #include "bat_algo.h" -void bat_ogm_init(struct hard_iface *hard_iface) +static void bat_iv_ogm_init(struct hard_iface *hard_iface) { struct batman_ogm_packet *batman_ogm_packet; @@ -48,7 +47,7 @@ void bat_ogm_init(struct hard_iface *hard_iface) batman_ogm_packet->ttvn = 0; } -void bat_ogm_init_primary(struct hard_iface *hard_iface) +static void bat_iv_ogm_init_primary(struct hard_iface *hard_iface) { struct batman_ogm_packet *batman_ogm_packet; @@ -57,7 +56,7 @@ void bat_ogm_init_primary(struct hard_iface *hard_iface) batman_ogm_packet->header.ttl = TTL; } -void bat_ogm_update_mac(struct hard_iface *hard_iface) +static void bat_iv_ogm_update_mac(struct hard_iface *hard_iface) { struct batman_ogm_packet *batman_ogm_packet; @@ -69,7 +68,7 @@ void bat_ogm_update_mac(struct hard_iface *hard_iface) } /* when do we schedule our own ogm to be sent */ -static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv) +static unsigned long bat_iv_ogm_emit_send_time(const struct bat_priv *bat_priv) { return jiffies + msecs_to_jiffies( atomic_read(&bat_priv->orig_interval) - @@ -77,7 +76,7 @@ static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv) } /* when do we schedule a ogm packet to be sent */ -static unsigned long bat_ogm_fwd_send_time(void) +static unsigned long bat_iv_ogm_fwd_send_time(void) { return jiffies + msecs_to_jiffies(random32() % (JITTER/2)); } @@ -90,8 +89,8 @@ static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv) } /* is there another aggregated packet here? */ -static int bat_ogm_aggr_packet(int buff_pos, int packet_len, - int tt_num_changes) +static int bat_iv_ogm_aggr_packet(int buff_pos, int packet_len, + int tt_num_changes) { int next_buff_pos = buff_pos + BATMAN_OGM_LEN + tt_len(tt_num_changes); @@ -100,8 +99,8 @@ static int bat_ogm_aggr_packet(int buff_pos, int packet_len, } /* send a batman ogm to a given interface */ -static void bat_ogm_send_to_if(struct forw_packet *forw_packet, - struct hard_iface *hard_iface) +static void bat_iv_ogm_send_to_if(struct forw_packet *forw_packet, + struct hard_iface *hard_iface) { struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); char *fwd_str; @@ -118,8 +117,8 @@ static void bat_ogm_send_to_if(struct forw_packet *forw_packet, batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data; /* adjust all flags and log packets */ - while (bat_ogm_aggr_packet(buff_pos, forw_packet->packet_len, - batman_ogm_packet->tt_num_changes)) { + while (bat_iv_ogm_aggr_packet(buff_pos, forw_packet->packet_len, + batman_ogm_packet->tt_num_changes)) { /* we might have aggregated direct link packets with an * ordinary base packet */ @@ -158,7 +157,7 @@ static void bat_ogm_send_to_if(struct forw_packet *forw_packet, } /* send a batman ogm packet */ -void bat_ogm_emit(struct forw_packet *forw_packet) +static void bat_iv_ogm_emit(struct forw_packet *forw_packet) { struct hard_iface *hard_iface; struct net_device *soft_iface; @@ -217,7 +216,7 @@ void bat_ogm_emit(struct forw_packet *forw_packet) if (hard_iface->soft_iface != soft_iface) continue; - bat_ogm_send_to_if(forw_packet, hard_iface); + bat_iv_ogm_send_to_if(forw_packet, hard_iface); } rcu_read_unlock(); @@ -227,13 +226,13 @@ out: } /* return true if new_packet can be aggregated with forw_packet */ -static bool bat_ogm_can_aggregate(const struct batman_ogm_packet +static bool bat_iv_ogm_can_aggregate(const struct batman_ogm_packet *new_batman_ogm_packet, - struct bat_priv *bat_priv, - int packet_len, unsigned long send_time, - bool directlink, - const struct hard_iface *if_incoming, - const struct forw_packet *forw_packet) + struct bat_priv *bat_priv, + int packet_len, unsigned long send_time, + bool directlink, + const struct hard_iface *if_incoming, + const struct forw_packet *forw_packet) { struct batman_ogm_packet *batman_ogm_packet; int aggregated_bytes = forw_packet->packet_len + packet_len; @@ -307,11 +306,11 @@ out: } /* create a new aggregated packet and add this packet to it */ -static void bat_ogm_aggregate_new(const unsigned char *packet_buff, - int packet_len, unsigned long send_time, - bool direct_link, - struct hard_iface *if_incoming, - int own_packet) +static void bat_iv_ogm_aggregate_new(const unsigned char *packet_buff, + int packet_len, unsigned long send_time, + bool direct_link, + struct hard_iface *if_incoming, + int own_packet) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct forw_packet *forw_packet_aggr; @@ -386,9 +385,9 @@ out: } /* aggregate a new packet into the existing ogm packet */ -static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr, - const unsigned char *packet_buff, - int packet_len, bool direct_link) +static void bat_iv_ogm_aggregate(struct forw_packet *forw_packet_aggr, + const unsigned char *packet_buff, + int packet_len, bool direct_link) { unsigned char *skb_buff; @@ -403,10 +402,10 @@ static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr, (1 << forw_packet_aggr->num_packets); } -static void bat_ogm_queue_add(struct bat_priv *bat_priv, - unsigned char *packet_buff, - int packet_len, struct hard_iface *if_incoming, - int own_packet, unsigned long send_time) +static void bat_iv_ogm_queue_add(struct bat_priv *bat_priv, + unsigned char *packet_buff, + int packet_len, struct hard_iface *if_incoming, + int own_packet, unsigned long send_time) { /** * _aggr -> pointer to the packet we want to aggregate with @@ -426,11 +425,11 @@ static void bat_ogm_queue_add(struct bat_priv *bat_priv, if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) { hlist_for_each_entry(forw_packet_pos, tmp_node, &bat_priv->forw_bat_list, list) { - if (bat_ogm_can_aggregate(batman_ogm_packet, - bat_priv, packet_len, - send_time, direct_link, - if_incoming, - forw_packet_pos)) { + if (bat_iv_ogm_can_aggregate(batman_ogm_packet, + bat_priv, packet_len, + send_time, direct_link, + if_incoming, + forw_packet_pos)) { forw_packet_aggr = forw_packet_pos; break; } @@ -452,20 +451,20 @@ static void bat_ogm_queue_add(struct bat_priv *bat_priv, (atomic_read(&bat_priv->aggregated_ogms))) send_time += msecs_to_jiffies(MAX_AGGREGATION_MS); - bat_ogm_aggregate_new(packet_buff, packet_len, - send_time, direct_link, - if_incoming, own_packet); + bat_iv_ogm_aggregate_new(packet_buff, packet_len, + send_time, direct_link, + if_incoming, own_packet); } else { - bat_ogm_aggregate(forw_packet_aggr, packet_buff, packet_len, - direct_link); + bat_iv_ogm_aggregate(forw_packet_aggr, packet_buff, + packet_len, direct_link); spin_unlock_bh(&bat_priv->forw_bat_list_lock); } } -static void bat_ogm_forward(struct orig_node *orig_node, - const struct ethhdr *ethhdr, - struct batman_ogm_packet *batman_ogm_packet, - int directlink, struct hard_iface *if_incoming) +static void bat_iv_ogm_forward(struct orig_node *orig_node, + const struct ethhdr *ethhdr, + struct batman_ogm_packet *batman_ogm_packet, + int directlink, struct hard_iface *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *router; @@ -524,12 +523,13 @@ static void bat_ogm_forward(struct orig_node *orig_node, else batman_ogm_packet->flags &= ~DIRECTLINK; - bat_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet, - BATMAN_OGM_LEN + tt_len(tt_num_changes), - if_incoming, 0, bat_ogm_fwd_send_time()); + bat_iv_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet, + BATMAN_OGM_LEN + tt_len(tt_num_changes), + if_incoming, 0, bat_iv_ogm_fwd_send_time()); } -void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes) +static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, + int tt_num_changes) { struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); struct batman_ogm_packet *batman_ogm_packet; @@ -566,21 +566,22 @@ void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes) atomic_inc(&hard_iface->seqno); slide_own_bcast_window(hard_iface); - bat_ogm_queue_add(bat_priv, hard_iface->packet_buff, - hard_iface->packet_len, hard_iface, 1, - bat_ogm_emit_send_time(bat_priv)); + bat_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff, + hard_iface->packet_len, hard_iface, 1, + bat_iv_ogm_emit_send_time(bat_priv)); if (primary_if) hardif_free_ref(primary_if); } -static void bat_ogm_orig_update(struct bat_priv *bat_priv, - struct orig_node *orig_node, - const struct ethhdr *ethhdr, - const struct batman_ogm_packet +static void bat_iv_ogm_orig_update(struct bat_priv *bat_priv, + struct orig_node *orig_node, + const struct ethhdr *ethhdr, + const struct batman_ogm_packet *batman_ogm_packet, - struct hard_iface *if_incoming, - const unsigned char *tt_buff, int is_duplicate) + struct hard_iface *if_incoming, + const unsigned char *tt_buff, + int is_duplicate) { struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; struct neigh_node *router = NULL; @@ -715,10 +716,10 @@ out: neigh_node_free_ref(router); } -static int bat_ogm_calc_tq(struct orig_node *orig_node, - struct orig_node *orig_neigh_node, - struct batman_ogm_packet *batman_ogm_packet, - struct hard_iface *if_incoming) +static int bat_iv_ogm_calc_tq(struct orig_node *orig_node, + struct orig_node *orig_neigh_node, + struct batman_ogm_packet *batman_ogm_packet, + struct hard_iface *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *neigh_node = NULL, *tmp_neigh_node; @@ -827,10 +828,10 @@ out: * -1 the packet is old and has been received while the seqno window * was protected. Caller should drop it. */ -static int bat_ogm_update_seqnos(const struct ethhdr *ethhdr, - const struct batman_ogm_packet +static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, + const struct batman_ogm_packet *batman_ogm_packet, - const struct hard_iface *if_incoming) + const struct hard_iface *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct orig_node *orig_node; @@ -892,10 +893,10 @@ out: return ret; } -static void bat_ogm_process(const struct ethhdr *ethhdr, - struct batman_ogm_packet *batman_ogm_packet, - const unsigned char *tt_buff, - struct hard_iface *if_incoming) +static void bat_iv_ogm_process(const struct ethhdr *ethhdr, + struct batman_ogm_packet *batman_ogm_packet, + const unsigned char *tt_buff, + struct hard_iface *if_incoming) { struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct hard_iface *hard_iface; @@ -1033,8 +1034,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr, if (!orig_node) return; - is_duplicate = bat_ogm_update_seqnos(ethhdr, batman_ogm_packet, - if_incoming); + is_duplicate = bat_iv_ogm_update_seqnos(ethhdr, batman_ogm_packet, + if_incoming); if (is_duplicate == -1) { bat_dbg(DBG_BATMAN, bat_priv, @@ -1083,8 +1084,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr, goto out_neigh; } - is_bidirectional = bat_ogm_calc_tq(orig_node, orig_neigh_node, - batman_ogm_packet, if_incoming); + is_bidirectional = bat_iv_ogm_calc_tq(orig_node, orig_neigh_node, + batman_ogm_packet, if_incoming); bonding_save_primary(orig_node, orig_neigh_node, batman_ogm_packet); @@ -1094,16 +1095,16 @@ static void bat_ogm_process(const struct ethhdr *ethhdr, (!is_duplicate || ((orig_node->last_real_seqno == batman_ogm_packet->seqno) && (orig_node->last_ttl - 3 <= batman_ogm_packet->header.ttl)))) - bat_ogm_orig_update(bat_priv, orig_node, ethhdr, - batman_ogm_packet, if_incoming, - tt_buff, is_duplicate); + bat_iv_ogm_orig_update(bat_priv, orig_node, ethhdr, + batman_ogm_packet, if_incoming, + tt_buff, is_duplicate); /* is single hop (direct) neighbor */ if (is_single_hop_neigh) { /* mark direct link on incoming interface */ - bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet, - 1, if_incoming); + bat_iv_ogm_forward(orig_node, ethhdr, batman_ogm_packet, + 1, if_incoming); bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: " "rebroadcast neighbor packet with direct link flag\n"); @@ -1125,7 +1126,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr, bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: rebroadcast originator packet\n"); - bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet, 0, if_incoming); + bat_iv_ogm_forward(orig_node, ethhdr, batman_ogm_packet, + 0, if_incoming); out_neigh: if ((orig_neigh_node) && (!is_single_hop_neigh)) @@ -1141,7 +1143,8 @@ out: orig_node_free_ref(orig_node); } -void bat_ogm_receive(struct hard_iface *if_incoming, struct sk_buff *skb) +static void bat_iv_ogm_receive(struct hard_iface *if_incoming, + struct sk_buff *skb) { struct batman_ogm_packet *batman_ogm_packet; struct ethhdr *ethhdr; @@ -1162,20 +1165,26 @@ void bat_ogm_receive(struct hard_iface *if_incoming, struct sk_buff *skb) tt_buff = packet_buff + buff_pos + BATMAN_OGM_LEN; - bat_ogm_process(ethhdr, batman_ogm_packet, - tt_buff, if_incoming); + bat_iv_ogm_process(ethhdr, batman_ogm_packet, + tt_buff, if_incoming); buff_pos += BATMAN_OGM_LEN + tt_len(batman_ogm_packet->tt_num_changes); batman_ogm_packet = (struct batman_ogm_packet *) (packet_buff + buff_pos); - } while (bat_ogm_aggr_packet(buff_pos, packet_len, - batman_ogm_packet->tt_num_changes)); + } while (bat_iv_ogm_aggr_packet(buff_pos, packet_len, + batman_ogm_packet->tt_num_changes)); } static struct bat_algo_ops batman_iv __read_mostly = { .name = "BATMAN IV", + .bat_ogm_init = bat_iv_ogm_init, + .bat_ogm_init_primary = bat_iv_ogm_init_primary, + .bat_ogm_update_mac = bat_iv_ogm_update_mac, + .bat_ogm_schedule = bat_iv_ogm_schedule, + .bat_ogm_emit = bat_iv_ogm_emit, + .bat_ogm_receive = bat_iv_ogm_receive, }; int __init bat_iv_init(void) -- cgit v1.2.2