Hello David, here is our first set of changes intended for next-next/linux-3.6.
Patch 2 fixes a major bug in the TranslationTable code where the old value of skb->data is used for memory access even if the data was relocated. Patches 4, 10, 11, 13, 14 are endianess-related cleanups that we wrote thanks to Al Viro's advice and help. Thanks to Martin Hundebøll batman-adv now supports the ethtool API and can export several counters that are specific to our module (patch 5). Then patch 16 improves the routing protocol API by making part of the TranslationTable code routing agnostic. The rest are minor fixes and other cleanups.
Thank you very much, Antonio
The following changes since commit 6fac262526ee91ee66210b8919a4297dcf7d544e:
ipv4: Cap ADVMSS metric in the FIB rather than the routing cache. (2012-06-17 19:47:34 -0700)
are available in the git repository at:
git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem
for you to fetch changes up to dafe94b278e052c3901b137fe6f666f8f92d839a:
batman-adv: only store changed gw_bandwidth values (2012-06-18 18:01:07 +0200)
---------------------------------------------------------------- Included changes:
* major skb->data pointer usage fix * interval version update * added get_ethtool_stats() support * endianess clean up * routing protocol API improvement wrt TT commit code * fix locking in hash table code * minor cleanups and fixes
---------------------------------------------------------------- Al Viro (5): batman-adv: get rid of pointless cast in memcpy() batman-adv: trivial endianness annotations batman-adv: keep batman_ogm_packet ->seqno net-endian all along batman-adv: don't bother flipping ->tt_data batman-adv: don't bother flipping ->tt_crc
Antonio Quartulli (3): batman-adv: fix skb->data assignment batman-adv: convert bat_priv->tt_crc from atomic_t to uint16_t batman-adv: use DBG_ALL in log_level sysfs definition
Marek Lindner (5): batman-adv: avoid characters requiring shell escapes in protocol names batman-adv: ignore trailing CR when comparing protocol names batman-adv: return added entries instead of number of possibly added entries batman-adv: turn tt commit code into routing protocol agnostic API batman-adv: only store changed gw_bandwidth values
Martin Hundebøll (1): batman-adv: Add get_ethtool_stats() support
Matthias Schiffer (2): batman-adv: fix visualization output without neighbors on the primary interface batman-adv: fix locking in hash_add()
Sven Eckelmann (3): batman-adv: update internal version number batman-adv: Initialize lockdep class keys for hashes batman-adv: Return error codes instead of -1 on failures
Documentation/networking/batman-adv.txt | 5 + net/batman-adv/bat_debugfs.c | 11 +- net/batman-adv/bat_iv_ogm.c | 63 ++++++------ net/batman-adv/bat_sysfs.c | 4 +- net/batman-adv/bridge_loop_avoidance.c | 27 +++-- net/batman-adv/gateway_common.c | 3 + net/batman-adv/hard-interface.c | 4 +- net/batman-adv/hash.c | 9 ++ net/batman-adv/hash.h | 19 ++-- net/batman-adv/icmp_socket.c | 4 +- net/batman-adv/main.c | 42 +++++--- net/batman-adv/main.h | 29 +++++- net/batman-adv/originator.c | 18 ++-- net/batman-adv/packet.h | 18 ++-- net/batman-adv/routing.c | 23 +++-- net/batman-adv/send.c | 74 +------------- net/batman-adv/soft-interface.c | 66 +++++++++++- net/batman-adv/translation-table.c | 168 ++++++++++++++++++++++++------- net/batman-adv/translation-table.h | 7 +- net/batman-adv/types.h | 22 +++- net/batman-adv/vis.c | 29 ++++-- 21 files changed, 420 insertions(+), 225 deletions(-)
From: Sven Eckelmann sven@narfation.org
Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/main.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index f4a3ec0..630bbe8 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -28,7 +28,7 @@ #define DRIVER_DEVICE "batman-adv"
#ifndef SOURCE_VERSION -#define SOURCE_VERSION "2012.2.0" +#define SOURCE_VERSION "2012.3.0" #endif
/* B.A.T.M.A.N. parameters */
skb_linearize(skb) possibly rearranges the skb internal data and then changes the skb->data pointer value. For this reason any other pointer in the code that was assigned skb->data before invoking skb_linearise(skb) must be re-assigned.
In the current tt_query message handling code this is not done and therefore, in case of skb linearization, the pointer used to handle the packet header ends up in pointing to poisoned memory. The packet is then dropped but the translation-table mechanism is corrupted.
Signed-off-by: Antonio Quartulli ordex@autistici.org Cc: stable@vger.kernel.org Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/routing.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 840e2c6..015471d 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -617,6 +617,8 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) * changes */ if (skb_linearize(skb) < 0) goto out; + /* skb_linearize() possibly changed skb->data */ + tt_query = (struct tt_query_packet *)skb->data;
tt_len = tt_query->tt_data * sizeof(struct tt_change);
From: Sven Eckelmann sven@narfation.org
The hash for claim and backbone hash in the bridge loop avoidance code receive the same key because they are getting initialized by hash_new with the same key. Lockdep will create a backtrace when they are used recursively. This can be avoided by reinitializing the key directly after the hash_new.
Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bridge_loop_avoidance.c | 13 +++++++++++++ net/batman-adv/hash.c | 9 +++++++++ net/batman-adv/hash.h | 4 ++++ 3 files changed, 26 insertions(+)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 8bf9751..5c1ac55 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1127,6 +1127,14 @@ out: bla_start_timer(bat_priv); }
+/* The hash for claim and backbone hash receive the same key because they + * are getting initialized by hash_new with the same key. Reinitializing + * them with to different keys to allow nested locking without generating + * lockdep warnings + */ +static struct lock_class_key claim_hash_lock_class_key; +static struct lock_class_key backbone_hash_lock_class_key; + /* initialize all bla structures */ int bla_init(struct bat_priv *bat_priv) { @@ -1164,6 +1172,11 @@ int bla_init(struct bat_priv *bat_priv) if (!bat_priv->claim_hash || !bat_priv->backbone_hash) return -1;
+ batadv_hash_set_lock_class(bat_priv->claim_hash, + &claim_hash_lock_class_key); + batadv_hash_set_lock_class(bat_priv->backbone_hash, + &backbone_hash_lock_class_key); + bat_dbg(DBG_BLA, bat_priv, "bla hashes initialized\n");
bla_start_timer(bat_priv); diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c index 117687b..5b2eabe 100644 --- a/net/batman-adv/hash.c +++ b/net/batman-adv/hash.c @@ -69,3 +69,12 @@ free_hash: kfree(hash); return NULL; } + +void batadv_hash_set_lock_class(struct hashtable_t *hash, + struct lock_class_key *key) +{ + uint32_t i; + + for (i = 0; i < hash->size; i++) + lockdep_set_class(&hash->list_locks[i], key); +} diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h index d4bd786..93b3c71 100644 --- a/net/batman-adv/hash.h +++ b/net/batman-adv/hash.h @@ -45,6 +45,10 @@ struct hashtable_t { /* allocates and clears the hash */ struct hashtable_t *hash_new(uint32_t size);
+/* set class key for all locks */ +void batadv_hash_set_lock_class(struct hashtable_t *hash, + struct lock_class_key *key); + /* free only the hashtable and the hash itself. */ void hash_destroy(struct hashtable_t *hash);
In the code we neever need to atomically check and set the bat_priv->tt_crc field value. It is simply set and read once in different pieces of the code. Therefore this field can be safely be converted from atomic_t to uint16_t.
Reported-by: Al Viro viro@ZenIV.linux.org.uk Signed-off-by: Antonio Quartulli ordex@autistici.org Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/bat_iv_ogm.c | 3 +-- net/batman-adv/send.c | 2 +- net/batman-adv/types.h | 2 +- 3 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index dc53798..ec35119 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -575,8 +575,7 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, htonl((uint32_t)atomic_read(&hard_iface->seqno));
batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn); - batman_ogm_packet->tt_crc = htons((uint16_t) - atomic_read(&bat_priv->tt_crc)); + batman_ogm_packet->tt_crc = htons(bat_priv->tt_crc); if (tt_num_changes >= 0) batman_ogm_packet->tt_num_changes = tt_num_changes;
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index f47299f..f5ff364 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -111,7 +111,7 @@ static int prepare_packet_buffer(struct bat_priv *bat_priv,
realloc_packet_buffer(hard_iface, new_len);
- atomic_set(&bat_priv->tt_crc, tt_local_crc(bat_priv)); + bat_priv->tt_crc = tt_local_crc(bat_priv);
/* reset the sending counter */ atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 61308e8..547dc33 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -210,7 +210,7 @@ struct bat_priv { spinlock_t vis_list_lock; /* protects vis_info::recv_list */ atomic_t num_local_tt; /* Checksum of the local table, recomputed before sending a new OGM */ - atomic_t tt_crc; + uint16_t tt_crc; unsigned char *tt_buff; int16_t tt_buff_len; spinlock_t tt_buff_lock; /* protects tt_buff */
From: Martin Hundebøll martin@hundeboll.net
Added additional counters in a bat_stats structure, which are exported through the ethtool api. The counters are specific to batman-adv and includes: forwarded packets and bytes management packets and bytes (aggregated OGMs at this point) translation table packets
New counters are added by extending "enum bat_counters" in types.h and adding corresponding descriptive string(s) to bat_counters_strings in soft-iface.c.
Counters are increased by calling batadv_add_counter() and incremented by one by calling batadv_inc_counter().
Signed-off-by: Martin Hundebøll martin@hundeboll.net Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- Documentation/networking/batman-adv.txt | 5 +++ net/batman-adv/bat_iv_ogm.c | 10 ++++- net/batman-adv/main.c | 2 + net/batman-adv/main.h | 27 +++++++++++++ net/batman-adv/routing.c | 11 ++++++ net/batman-adv/soft-interface.c | 66 ++++++++++++++++++++++++++++++- net/batman-adv/translation-table.c | 8 ++++ net/batman-adv/types.h | 17 ++++++++ 8 files changed, 143 insertions(+), 3 deletions(-)
diff --git a/Documentation/networking/batman-adv.txt b/Documentation/networking/batman-adv.txt index 75a5923..8f3ae4a 100644 --- a/Documentation/networking/batman-adv.txt +++ b/Documentation/networking/batman-adv.txt @@ -211,6 +211,11 @@ The debug output can be changed at runtime using the file
will enable debug messages for when routes change.
+Counters for different types of packets entering and leaving the +batman-adv module are available through ethtool: + +# ethtool --statistics bat0 +
BATCTL ------ diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index ec35119..99ec218 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -196,8 +196,12 @@ static void bat_iv_ogm_send_to_if(struct forw_packet *forw_packet,
/* create clone because function is called more than once */ skb = skb_clone(forw_packet->skb, GFP_ATOMIC); - if (skb) + if (skb) { + batadv_inc_counter(bat_priv, BAT_CNT_MGMT_TX); + batadv_add_counter(bat_priv, BAT_CNT_MGMT_TX_BYTES, + skb->len + ETH_HLEN); send_skb_packet(skb, hard_iface, broadcast_addr); + } }
/* send a batman ogm packet */ @@ -1203,6 +1207,10 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, if (bat_priv->bat_algo_ops->bat_ogm_emit != bat_iv_ogm_emit) return NET_RX_DROP;
+ batadv_inc_counter(bat_priv, BAT_CNT_MGMT_RX); + batadv_add_counter(bat_priv, BAT_CNT_MGMT_RX_BYTES, + skb->len + ETH_HLEN); + packet_len = skb_headlen(skb); ethhdr = (struct ethhdr *)skb_mac_header(skb); packet_buff = skb->data; diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 083a299..bd83aa4 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -153,6 +153,8 @@ void mesh_free(struct net_device *soft_iface)
bla_free(bat_priv);
+ free_percpu(bat_priv->bat_counters); + atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); }
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 630bbe8..6e0cbdc 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -138,6 +138,7 @@ enum dbg_level { #include <linux/kthread.h> /* kernel threads */ #include <linux/pkt_sched.h> /* schedule types */ #include <linux/workqueue.h> /* workqueue */ +#include <linux/percpu.h> #include <linux/slab.h> #include <net/sock.h> /* struct sock */ #include <linux/jiffies.h> @@ -242,4 +243,30 @@ static inline bool has_timed_out(unsigned long timestamp, unsigned int timeout) _dummy > smallest_signed_int(_dummy); }) #define seq_after(x, y) seq_before(y, x)
+/* Stop preemption on local cpu while incrementing the counter */ +static inline void batadv_add_counter(struct bat_priv *bat_priv, size_t idx, + size_t count) +{ + int cpu = get_cpu(); + per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count; + put_cpu(); +} + +#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1) + +/* Sum and return the cpu-local counters for index 'idx' */ +static inline uint64_t batadv_sum_counter(struct bat_priv *bat_priv, size_t idx) +{ + uint64_t *counters; + int cpu; + int sum = 0; + + for_each_possible_cpu(cpu) { + counters = per_cpu_ptr(bat_priv->bat_counters, cpu); + sum += counters[idx]; + } + + return sum; +} + #endif /* _NET_BATMAN_ADV_MAIN_H_ */ diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 015471d..369604c 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -600,6 +600,8 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
switch (tt_query->flags & TT_QUERY_TYPE_MASK) { case TT_REQUEST: + batadv_inc_counter(bat_priv, BAT_CNT_TT_REQUEST_RX); + /* If we cannot provide an answer the tt_request is * forwarded */ if (!send_tt_response(bat_priv, tt_query)) { @@ -612,6 +614,8 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) } break; case TT_RESPONSE: + batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_RX); + if (is_my_mac(tt_query->dst)) { /* packet needs to be linearized to access the TT * changes */ @@ -665,6 +669,8 @@ int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if) if (is_broadcast_ether_addr(ethhdr->h_source)) goto out;
+ batadv_inc_counter(bat_priv, BAT_CNT_TT_ROAM_ADV_RX); + roam_adv_packet = (struct roam_adv_packet *)skb->data;
if (!is_my_mac(roam_adv_packet->dst)) @@ -872,6 +878,11 @@ static int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if) /* decrement ttl */ unicast_packet->header.ttl--;
+ /* Update stats counter */ + batadv_inc_counter(bat_priv, BAT_CNT_FORWARD); + batadv_add_counter(bat_priv, BAT_CNT_FORWARD_BYTES, + skb->len + ETH_HLEN); + /* route it */ send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = NET_RX_SUCCESS; diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 6e2530b..304a7ba 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -45,6 +45,10 @@ static void bat_get_drvinfo(struct net_device *dev, static u32 bat_get_msglevel(struct net_device *dev); static void bat_set_msglevel(struct net_device *dev, u32 value); static u32 bat_get_link(struct net_device *dev); +static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data); +static void batadv_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data); +static int batadv_get_sset_count(struct net_device *dev, int stringset);
static const struct ethtool_ops bat_ethtool_ops = { .get_settings = bat_get_settings, @@ -52,6 +56,9 @@ static const struct ethtool_ops bat_ethtool_ops = { .get_msglevel = bat_get_msglevel, .set_msglevel = bat_set_msglevel, .get_link = bat_get_link, + .get_strings = batadv_get_strings, + .get_ethtool_stats = batadv_get_ethtool_stats, + .get_sset_count = batadv_get_sset_count, };
int my_skb_head_push(struct sk_buff *skb, unsigned int len) @@ -399,13 +406,18 @@ struct net_device *softif_create(const char *name) bat_priv->primary_if = NULL; bat_priv->num_ifaces = 0;
+ bat_priv->bat_counters = __alloc_percpu(sizeof(uint64_t) * BAT_CNT_NUM, + __alignof__(uint64_t)); + if (!bat_priv->bat_counters) + goto unreg_soft_iface; + ret = bat_algo_select(bat_priv, bat_routing_algo); if (ret < 0) - goto unreg_soft_iface; + goto free_bat_counters;
ret = sysfs_add_meshif(soft_iface); if (ret < 0) - goto unreg_soft_iface; + goto free_bat_counters;
ret = debugfs_add_meshif(soft_iface); if (ret < 0) @@ -421,6 +433,8 @@ unreg_debugfs: debugfs_del_meshif(soft_iface); unreg_sysfs: sysfs_del_meshif(soft_iface); +free_bat_counters: + free_percpu(bat_priv->bat_counters); unreg_soft_iface: unregister_netdevice(soft_iface); return NULL; @@ -486,3 +500,51 @@ static u32 bat_get_link(struct net_device *dev) { return 1; } + +/* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 + * Declare each description string in struct.name[] to get fixed sized buffer + * and compile time checking for strings longer than ETH_GSTRING_LEN. + */ +static const struct { + const char name[ETH_GSTRING_LEN]; +} bat_counters_strings[] = { + { "forward" }, + { "forward_bytes" }, + { "mgmt_tx" }, + { "mgmt_tx_bytes" }, + { "mgmt_rx" }, + { "mgmt_rx_bytes" }, + { "tt_request_tx" }, + { "tt_request_rx" }, + { "tt_response_tx" }, + { "tt_response_rx" }, + { "tt_roam_adv_tx" }, + { "tt_roam_adv_rx" }, +}; + +static void batadv_get_strings(struct net_device *dev, uint32_t stringset, + uint8_t *data) +{ + if (stringset == ETH_SS_STATS) + memcpy(data, bat_counters_strings, + sizeof(bat_counters_strings)); +} + +static void batadv_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, + uint64_t *data) +{ + struct bat_priv *bat_priv = netdev_priv(dev); + int i; + + for (i = 0; i < BAT_CNT_NUM; i++) + data[i] = batadv_sum_counter(bat_priv, i); +} + +static int batadv_get_sset_count(struct net_device *dev, int stringset) +{ + if (stringset == ETH_SS_STATS) + return BAT_CNT_NUM; + + return -EOPNOTSUPP; +} diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index a66c2dc..ca53542 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1356,6 +1356,8 @@ static int send_tt_request(struct bat_priv *bat_priv, dst_orig_node->orig, neigh_node->addr, (full_table ? 'F' : '.'));
+ batadv_inc_counter(bat_priv, BAT_CNT_TT_REQUEST_TX); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = 0;
@@ -1480,6 +1482,8 @@ static bool send_other_tt_response(struct bat_priv *bat_priv, res_dst_orig_node->orig, neigh_node->addr, req_dst_orig_node->orig, req_ttvn);
+ batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_TX); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = true; goto out; @@ -1596,6 +1600,8 @@ static bool send_my_tt_response(struct bat_priv *bat_priv, orig_node->orig, neigh_node->addr, (tt_response->flags & TT_FULL_TABLE ? 'F' : '.'));
+ batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_TX); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = true; goto out; @@ -1895,6 +1901,8 @@ static void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client, "Sending ROAMING_ADV to %pM (client %pM) via %pM\n", orig_node->orig, client, neigh_node->addr);
+ batadv_inc_counter(bat_priv, BAT_CNT_TT_ROAM_ADV_TX); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = 0;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 547dc33..6b569de 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -148,9 +148,26 @@ struct bcast_duplist_entry { }; #endif
+enum bat_counters { + BAT_CNT_FORWARD, + BAT_CNT_FORWARD_BYTES, + BAT_CNT_MGMT_TX, + BAT_CNT_MGMT_TX_BYTES, + BAT_CNT_MGMT_RX, + BAT_CNT_MGMT_RX_BYTES, + BAT_CNT_TT_REQUEST_TX, + BAT_CNT_TT_REQUEST_RX, + BAT_CNT_TT_RESPONSE_TX, + BAT_CNT_TT_RESPONSE_RX, + BAT_CNT_TT_ROAM_ADV_TX, + BAT_CNT_TT_ROAM_ADV_RX, + BAT_CNT_NUM, +}; + struct bat_priv { atomic_t mesh_state; struct net_device_stats stats; + uint64_t __percpu *bat_counters; /* Per cpu counters */ atomic_t aggregated_ogms; /* boolean */ atomic_t bonding; /* boolean */ atomic_t fragmentation; /* boolean */
From: Marek Lindner lindner_marek@yahoo.de
Reported-by: Andrew Lunn andrew@lunn.ch Signed-off-by: Marek Lindner lindner_marek@yahoo.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bat_iv_ogm.c | 2 +- net/batman-adv/main.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 99ec218..e94ac0b 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -1241,7 +1241,7 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, }
static struct bat_algo_ops batman_iv __read_mostly = { - .name = "BATMAN IV", + .name = "BATMAN_IV", .bat_iface_enable = bat_iv_ogm_iface_enable, .bat_iface_disable = bat_iv_ogm_iface_disable, .bat_iface_update_mac = bat_iv_ogm_iface_update_mac, diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index bd83aa4..65b4f08 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -40,7 +40,7 @@ * list traversals just rcu-locked */ struct list_head hardif_list; static int (*recv_packet_handler[256])(struct sk_buff *, struct hard_iface *); -char bat_routing_algo[20] = "BATMAN IV"; +char bat_routing_algo[20] = "BATMAN_IV"; static struct hlist_head bat_algo_list;
unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
From: Marek Lindner lindner_marek@yahoo.de
Signed-off-by: Marek Lindner lindner_marek@yahoo.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/main.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 65b4f08..8610b5c 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -381,14 +381,19 @@ int bat_algo_seq_print_text(struct seq_file *seq, void *offset) static int param_set_ra(const char *val, const struct kernel_param *kp) { struct bat_algo_ops *bat_algo_ops; + char *algo_name = (char *)val; + size_t name_len = strlen(algo_name);
- bat_algo_ops = bat_algo_get((char *)val); + if (algo_name[name_len - 1] == '\n') + algo_name[name_len - 1] = '\0'; + + bat_algo_ops = bat_algo_get(algo_name); if (!bat_algo_ops) { - pr_err("Routing algorithm '%s' is not supported\n", val); + pr_err("Routing algorithm '%s' is not supported\n", algo_name); return -EINVAL; }
- return param_set_copystring(val, kp); + return param_set_copystring(algo_name, kp); }
static const struct kernel_param_ops param_ops_ra = {
From: Marek Lindner lindner_marek@yahoo.de
Signed-off-by: Marek Lindner lindner_marek@yahoo.de Acked-by: Antonio Quartulli ordex@autistici.org Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/translation-table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index ca53542..f9675b7 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -319,7 +319,7 @@ int tt_changes_fill_buffer(struct bat_priv *bat_priv, } spin_unlock_bh(&bat_priv->tt_buff_lock);
- return tot_changes; + return count; }
int tt_local_seq_print_text(struct seq_file *seq, void *offset)
From: Al Viro viro@ZenIV.linux.org.uk
memcpy() arguments are void *, precisely to avoid that kind of pointless casts.
Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bridge_loop_avoidance.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 5c1ac55..89e2b1c 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -510,7 +510,7 @@ static void bla_send_announce(struct bat_priv *bat_priv,
memcpy(mac, announce_mac, 4); crc = htons(backbone_gw->crc); - memcpy(&mac[4], (uint8_t *)&crc, 2); + memcpy(&mac[4], &crc, 2);
bla_send_claim(bat_priv, mac, backbone_gw->vid, CLAIM_TYPE_ANNOUNCE);
From: Al Viro viro@ZenIV.linux.org.uk
Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bridge_loop_avoidance.c | 6 +++--- net/batman-adv/packet.h | 12 ++++++------ 2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 89e2b1c..0355c48 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -258,7 +258,7 @@ static void bla_send_claim(struct bat_priv *bat_priv, uint8_t *mac, struct net_device *soft_iface; uint8_t *hw_src; struct bla_claim_dst local_claim_dest; - uint32_t zeroip = 0; + __be32 zeroip = 0;
primary_if = primary_if_get_selected(bat_priv); if (!primary_if) @@ -506,7 +506,7 @@ static void bla_send_announce(struct bat_priv *bat_priv, struct backbone_gw *backbone_gw) { uint8_t mac[ETH_ALEN]; - uint16_t crc; + __be16 crc;
memcpy(mac, announce_mac, 4); crc = htons(backbone_gw->crc); @@ -627,7 +627,7 @@ static int handle_announce(struct bat_priv *bat_priv,
/* handle as ANNOUNCE frame */ backbone_gw->lasttime = jiffies; - crc = ntohs(*((uint16_t *)(&an_addr[4]))); + crc = ntohs(*((__be16 *)(&an_addr[4])));
bat_dbg(DBG_BLA, bat_priv, "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %04x\n", diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index 0ee1af7..eaa6028 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -105,7 +105,7 @@ enum bla_claimframe { struct bla_claim_dst { uint8_t magic[3]; /* FF:43:05 */ uint8_t type; /* bla_claimframe */ - uint16_t group; /* group id */ + __be16 group; /* group id */ } __packed;
struct batman_header { @@ -134,7 +134,7 @@ struct icmp_packet { uint8_t msg_type; /* see ICMP message types above */ uint8_t dst[ETH_ALEN]; uint8_t orig[ETH_ALEN]; - uint16_t seqno; + __be16 seqno; uint8_t uid; uint8_t reserved; } __packed; @@ -148,7 +148,7 @@ struct icmp_packet_rr { uint8_t msg_type; /* see ICMP message types above */ uint8_t dst[ETH_ALEN]; uint8_t orig[ETH_ALEN]; - uint16_t seqno; + __be16 seqno; uint8_t uid; uint8_t rr_cur; uint8_t rr[BAT_RR_LEN][ETH_ALEN]; @@ -167,20 +167,20 @@ struct unicast_frag_packet { uint8_t flags; uint8_t align; uint8_t orig[ETH_ALEN]; - uint16_t seqno; + __be16 seqno; } __packed;
struct bcast_packet { struct batman_header header; uint8_t reserved; - uint32_t seqno; + __be32 seqno; uint8_t orig[ETH_ALEN]; } __packed;
struct vis_packet { struct batman_header header; uint8_t vis_type; /* which type of vis-participant sent this? */ - uint32_t seqno; /* sequence number */ + __be32 seqno; /* sequence number */ uint8_t entries; /* number of entries behind this struct */ uint8_t reserved; uint8_t vis_orig[ETH_ALEN]; /* originator reporting its neighbors */
From: Al Viro viro@ZenIV.linux.org.uk
Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bat_iv_ogm.c | 22 +++++++++++----------- net/batman-adv/packet.h | 2 +- 2 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index e94ac0b..56b6d78 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -34,11 +34,12 @@ static struct neigh_node *bat_iv_ogm_neigh_new(struct hard_iface *hard_iface, const uint8_t *neigh_addr, struct orig_node *orig_node, struct orig_node *orig_neigh, - uint32_t seqno) + __be32 seqno) { struct neigh_node *neigh_node;
- neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr, seqno); + neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr, + ntohl(seqno)); if (!neigh_node) goto out;
@@ -546,7 +547,6 @@ static void bat_iv_ogm_forward(struct orig_node *orig_node, "Forwarding packet: tq: %i, ttl: %i\n", batman_ogm_packet->tq, batman_ogm_packet->header.ttl);
- batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno); batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);
/* switch of primaries first hop flag when forwarding */ @@ -871,13 +871,14 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, int32_t seq_diff; int need_update = 0; int set_mark, ret = -1; + uint32_t seqno = ntohl(batman_ogm_packet->seqno);
orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig); if (!orig_node) return 0;
spin_lock_bh(&orig_node->ogm_cnt_lock); - seq_diff = batman_ogm_packet->seqno - orig_node->last_real_seqno; + seq_diff = seqno - orig_node->last_real_seqno;
/* signalize caller that the packet is to be dropped. */ if (!hlist_empty(&orig_node->neigh_list) && @@ -891,7 +892,7 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
is_duplicate |= bat_test_bit(tmp_neigh_node->real_bits, orig_node->last_real_seqno, - batman_ogm_packet->seqno); + seqno);
if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming)) @@ -913,8 +914,8 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, if (need_update) { bat_dbg(DBG_BATMAN, bat_priv, "updating last_seqno: old %u, new %u\n", - orig_node->last_real_seqno, batman_ogm_packet->seqno); - orig_node->last_real_seqno = batman_ogm_packet->seqno; + orig_node->last_real_seqno, seqno); + orig_node->last_real_seqno = seqno; }
ret = is_duplicate; @@ -970,7 +971,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, "Received BATMAN packet via NB: %pM, IF: %s [%pM] (from OG: %pM, via prev OG: %pM, seqno %u, ttvn %u, crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n", ethhdr->h_source, if_incoming->net_dev->name, if_incoming->net_dev->dev_addr, batman_ogm_packet->orig, - batman_ogm_packet->prev_sender, batman_ogm_packet->seqno, + batman_ogm_packet->prev_sender, ntohl(batman_ogm_packet->seqno), batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc, batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq, batman_ogm_packet->header.ttl, @@ -1042,7 +1043,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, word = &(orig_neigh_node->bcast_own[offset]); bat_set_bit(word, if_incoming_seqno - - batman_ogm_packet->seqno - 2); + ntohl(batman_ogm_packet->seqno) - 2); orig_neigh_node->bcast_own_sum[if_incoming->if_num] = bitmap_weight(word, TQ_LOCAL_WINDOW_SIZE); spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock); @@ -1135,7 +1136,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, * seqno and similar ttl as the non-duplicate */ if (is_bidirectional && (!is_duplicate || - ((orig_node->last_real_seqno == batman_ogm_packet->seqno) && + ((orig_node->last_real_seqno == ntohl(batman_ogm_packet->seqno)) && (orig_node->last_ttl - 3 <= batman_ogm_packet->header.ttl)))) bat_iv_ogm_orig_update(bat_priv, orig_node, ethhdr, batman_ogm_packet, if_incoming, @@ -1220,7 +1221,6 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, do { /* network to host order for our 32bit seqno and the orig_interval */ - batman_ogm_packet->seqno = ntohl(batman_ogm_packet->seqno); batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc);
tt_buff = packet_buff + buff_pos + BATMAN_OGM_HLEN; diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index eaa6028..5bf567b 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -117,7 +117,7 @@ struct batman_header { struct batman_ogm_packet { struct batman_header header; uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */ - uint32_t seqno; + __be32 seqno; uint8_t orig[ETH_ALEN]; uint8_t prev_sender[ETH_ALEN]; uint8_t gw_flags; /* flags related to gateway class */
From: Sven Eckelmann sven@narfation.org
Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bat_debugfs.c | 11 +++++++---- net/batman-adv/bat_iv_ogm.c | 2 +- net/batman-adv/bat_sysfs.c | 2 +- net/batman-adv/bridge_loop_avoidance.c | 6 +++--- net/batman-adv/hard-interface.c | 4 +--- net/batman-adv/icmp_socket.c | 4 ++-- net/batman-adv/main.c | 27 ++++++++++++++++----------- net/batman-adv/originator.c | 18 +++++++++--------- net/batman-adv/translation-table.c | 24 ++++++++++++++---------- net/batman-adv/vis.c | 8 ++++---- 10 files changed, 58 insertions(+), 48 deletions(-)
diff --git a/net/batman-adv/bat_debugfs.c b/net/batman-adv/bat_debugfs.c index 3b588f8..db8273c 100644 --- a/net/batman-adv/bat_debugfs.c +++ b/net/batman-adv/bat_debugfs.c @@ -195,13 +195,13 @@ static int debug_log_setup(struct bat_priv *bat_priv)
d = debugfs_create_file("log", S_IFREG | S_IRUSR, bat_priv->debug_dir, bat_priv, &log_fops); - if (d) + if (!d) goto err;
return 0;
err: - return 1; + return -ENOMEM; }
static void debug_log_cleanup(struct bat_priv *bat_priv) @@ -348,8 +348,11 @@ int debugfs_add_meshif(struct net_device *dev) if (!bat_priv->debug_dir) goto out;
- bat_socket_setup(bat_priv); - debug_log_setup(bat_priv); + if (bat_socket_setup(bat_priv) < 0) + goto rem_attr; + + if (debug_log_setup(bat_priv) < 0) + goto rem_attr;
for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) { file = debugfs_create_file(((*bat_debug)->attr).name, diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 56b6d78..896287e 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -60,7 +60,7 @@ static int bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) { struct batman_ogm_packet *batman_ogm_packet; uint32_t random_seqno; - int res = -1; + int res = -ENOMEM;
/* randomize initial seqno to avoid collision */ get_random_bytes(&random_seqno, sizeof(random_seqno)); diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c index 5bc7b66..62f4f6c 100644 --- a/net/batman-adv/bat_sysfs.c +++ b/net/batman-adv/bat_sysfs.c @@ -680,7 +680,7 @@ void sysfs_del_hardif(struct kobject **hardif_obj) int throw_uevent(struct bat_priv *bat_priv, enum uev_type type, enum uev_action action, const char *data) { - int ret = -1; + int ret = -ENOMEM; struct hard_iface *primary_if = NULL; struct kobject *bat_kobj; char *uevent_env[4] = { NULL, NULL, NULL, NULL }; diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 0355c48..314e37b 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1164,13 +1164,13 @@ int bla_init(struct bat_priv *bat_priv) bat_priv->bcast_duplist_curr = 0;
if (bat_priv->claim_hash) - return 1; + return 0;
bat_priv->claim_hash = hash_new(128); bat_priv->backbone_hash = hash_new(32);
if (!bat_priv->claim_hash || !bat_priv->backbone_hash) - return -1; + return -ENOMEM;
batadv_hash_set_lock_class(bat_priv->claim_hash, &claim_hash_lock_class_key); @@ -1180,7 +1180,7 @@ int bla_init(struct bat_priv *bat_priv) bat_dbg(DBG_BLA, bat_priv, "bla hashes initialized\n");
bla_start_timer(bat_priv); - return 1; + return 0; }
/** diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index dc334fa..ce78c6d 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -306,10 +306,8 @@ int hardif_enable_interface(struct hard_iface *hard_iface, bat_priv = netdev_priv(hard_iface->soft_iface);
ret = bat_priv->bat_algo_ops->bat_iface_enable(hard_iface); - if (ret < 0) { - ret = -ENOMEM; + if (ret < 0) goto err_dev; - }
hard_iface->if_num = bat_priv->num_ifaces; bat_priv->num_ifaces++; diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index 2e98a57..d27db81 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -285,13 +285,13 @@ int bat_socket_setup(struct bat_priv *bat_priv)
d = debugfs_create_file(ICMP_SOCKET, S_IFREG | S_IWUSR | S_IRUSR, bat_priv->debug_dir, bat_priv, &fops); - if (d) + if (!d) goto err;
return 0;
err: - return 1; + return -ENOMEM; }
static void bat_socket_add_packet(struct socket_client *socket_client, diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 8610b5c..46ba302 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -92,6 +92,7 @@ static void __exit batman_exit(void) int mesh_init(struct net_device *soft_iface) { struct bat_priv *bat_priv = netdev_priv(soft_iface); + int ret;
spin_lock_init(&bat_priv->forw_bat_list_lock); spin_lock_init(&bat_priv->forw_bcast_list_lock); @@ -110,30 +111,32 @@ int mesh_init(struct net_device *soft_iface) INIT_LIST_HEAD(&bat_priv->tt_req_list); INIT_LIST_HEAD(&bat_priv->tt_roam_list);
- if (originator_init(bat_priv) < 1) + ret = originator_init(bat_priv); + if (ret < 0) goto err;
- if (tt_init(bat_priv) < 1) + ret = tt_init(bat_priv); + if (ret < 0) goto err;
tt_local_add(soft_iface, soft_iface->dev_addr, NULL_IFINDEX);
- if (vis_init(bat_priv) < 1) + ret = vis_init(bat_priv); + if (ret < 0) goto err;
- if (bla_init(bat_priv) < 1) + ret = bla_init(bat_priv); + if (ret < 0) goto err;
atomic_set(&bat_priv->gw_reselect, 0); atomic_set(&bat_priv->mesh_state, MESH_ACTIVE); - goto end; + + return 0;
err: mesh_free(soft_iface); - return -1; - -end: - return 0; + return ret; }
void mesh_free(struct net_device *soft_iface) @@ -319,12 +322,13 @@ static struct bat_algo_ops *bat_algo_get(char *name) int bat_algo_register(struct bat_algo_ops *bat_algo_ops) { struct bat_algo_ops *bat_algo_ops_tmp; - int ret = -1; + int ret;
bat_algo_ops_tmp = bat_algo_get(bat_algo_ops->name); if (bat_algo_ops_tmp) { pr_info("Trying to register already registered routing algorithm: %s\n", bat_algo_ops->name); + ret = -EEXIST; goto out; }
@@ -337,6 +341,7 @@ int bat_algo_register(struct bat_algo_ops *bat_algo_ops) !bat_algo_ops->bat_ogm_emit) { pr_info("Routing algo '%s' does not implement required ops\n", bat_algo_ops->name); + ret = -EINVAL; goto out; }
@@ -351,7 +356,7 @@ out: int bat_algo_select(struct bat_priv *bat_priv, char *name) { struct bat_algo_ops *bat_algo_ops; - int ret = -1; + int ret = -EINVAL;
bat_algo_ops = bat_algo_get(name); if (!bat_algo_ops) diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 41147942..cf83c54 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -50,7 +50,7 @@ static int compare_orig(const struct hlist_node *node, const void *data2) int originator_init(struct bat_priv *bat_priv) { if (bat_priv->orig_hash) - return 1; + return 0;
bat_priv->orig_hash = hash_new(1024);
@@ -58,10 +58,10 @@ int originator_init(struct bat_priv *bat_priv) goto err;
start_purge_timer(bat_priv); - return 1; + return 0;
err: - return 0; + return -ENOMEM; }
void neigh_node_free_ref(struct neigh_node *neigh_node) @@ -488,7 +488,7 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, GFP_ATOMIC); if (!data_ptr) - return -1; + return -ENOMEM;
memcpy(data_ptr, orig_node->bcast_own, (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); @@ -497,7 +497,7 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); if (!data_ptr) - return -1; + return -ENOMEM;
memcpy(data_ptr, orig_node->bcast_own_sum, (max_if_num - 1) * sizeof(uint8_t)); @@ -528,7 +528,7 @@ int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) ret = orig_node_add_if(orig_node, max_if_num); spin_unlock_bh(&orig_node->ogm_cnt_lock);
- if (ret == -1) + if (ret == -ENOMEM) goto err; } rcu_read_unlock(); @@ -554,7 +554,7 @@ static int orig_node_del_if(struct orig_node *orig_node, chunk_size = sizeof(unsigned long) * NUM_WORDS; data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); if (!data_ptr) - return -1; + return -ENOMEM;
/* copy first part */ memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); @@ -573,7 +573,7 @@ free_bcast_own:
data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); if (!data_ptr) - return -1; + return -ENOMEM;
memcpy(data_ptr, orig_node->bcast_own_sum, del_if_num * sizeof(uint8_t)); @@ -612,7 +612,7 @@ int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) hard_iface->if_num); spin_unlock_bh(&orig_node->ogm_cnt_lock);
- if (ret == -1) + if (ret == -ENOMEM) goto err; } rcu_read_unlock(); diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index f9675b7..24e691d 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -181,14 +181,14 @@ int tt_len(int changes_num) static int tt_local_init(struct bat_priv *bat_priv) { if (bat_priv->tt_local_hash) - return 1; + return 0;
bat_priv->tt_local_hash = hash_new(1024);
if (!bat_priv->tt_local_hash) - return 0; + return -ENOMEM;
- return 1; + return 0; }
void tt_local_add(struct net_device *soft_iface, const uint8_t *addr, @@ -491,14 +491,14 @@ static void tt_local_table_free(struct bat_priv *bat_priv) static int tt_global_init(struct bat_priv *bat_priv) { if (bat_priv->tt_global_hash) - return 1; + return 0;
bat_priv->tt_global_hash = hash_new(1024);
if (!bat_priv->tt_global_hash) - return 0; + return -ENOMEM;
- return 1; + return 0; }
static void tt_changes_list_free(struct bat_priv *bat_priv) @@ -1773,11 +1773,15 @@ out:
int tt_init(struct bat_priv *bat_priv) { - if (!tt_local_init(bat_priv)) - return 0; + int ret;
- if (!tt_global_init(bat_priv)) - return 0; + ret = tt_local_init(bat_priv); + if (ret < 0) + return ret; + + ret = tt_global_init(bat_priv); + if (ret < 0) + return ret;
tt_start_timer(bat_priv);
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c index cec216f..411c0e1 100644 --- a/net/batman-adv/vis.c +++ b/net/batman-adv/vis.c @@ -626,7 +626,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv) best_tq = find_best_vis_server(bat_priv, info);
if (best_tq < 0) - return -1; + return best_tq; }
for (i = 0; i < hash->size; i++) { @@ -878,7 +878,7 @@ int vis_init(struct bat_priv *bat_priv) int hash_added;
if (bat_priv->vis_hash) - return 1; + return 0;
spin_lock_bh(&bat_priv->vis_hash_lock);
@@ -929,7 +929,7 @@ int vis_init(struct bat_priv *bat_priv)
spin_unlock_bh(&bat_priv->vis_hash_lock); start_vis_timer(bat_priv); - return 1; + return 0;
free_info: kfree(bat_priv->my_vis_info); @@ -937,7 +937,7 @@ free_info: err: spin_unlock_bh(&bat_priv->vis_hash_lock); vis_quit(bat_priv); - return 0; + return -ENOMEM; }
/* Decrease the reference count on a hash item info */
From: Al Viro viro@ZenIV.linux.org.uk
just keep it net-endian all along
Signed-off-by: Al Viro viro@zeniv.linux.org.uk [lindner_marek@yahoo.de: fix checkpatch warnings] Signed-off-by: Marek Lindner lindner_marek@yahoo.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/packet.h | 2 +- net/batman-adv/routing.c | 10 +++------- net/batman-adv/translation-table.c | 10 ++++++---- 3 files changed, 10 insertions(+), 12 deletions(-)
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index 5bf567b..372fc88 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -206,7 +206,7 @@ struct tt_query_packet { * if TT_REQUEST: crc associated with the * ttvn * if TT_RESPONSE: table_size */ - uint16_t tt_data; + __be16 tt_data; } __packed;
struct roam_adv_packet { diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 369604c..9cfd23c 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -573,7 +573,7 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) { struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); struct tt_query_packet *tt_query; - uint16_t tt_len; + uint16_t tt_size; struct ethhdr *ethhdr;
/* drop packet if it has not necessary minimum size */ @@ -596,8 +596,6 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
tt_query = (struct tt_query_packet *)skb->data;
- tt_query->tt_data = ntohs(tt_query->tt_data); - switch (tt_query->flags & TT_QUERY_TYPE_MASK) { case TT_REQUEST: batadv_inc_counter(bat_priv, BAT_CNT_TT_REQUEST_RX); @@ -609,7 +607,6 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) "Routing TT_REQUEST to %pM [%c]\n", tt_query->dst, (tt_query->flags & TT_FULL_TABLE ? 'F' : '.')); - tt_query->tt_data = htons(tt_query->tt_data); return route_unicast_packet(skb, recv_if); } break; @@ -624,11 +621,11 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) /* skb_linearize() possibly changed skb->data */ tt_query = (struct tt_query_packet *)skb->data;
- tt_len = tt_query->tt_data * sizeof(struct tt_change); + tt_size = tt_len(ntohs(tt_query->tt_data));
/* Ensure we have all the claimed data */ if (unlikely(skb_headlen(skb) < - sizeof(struct tt_query_packet) + tt_len)) + sizeof(struct tt_query_packet) + tt_size)) goto out;
handle_tt_response(bat_priv, tt_query); @@ -637,7 +634,6 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if) "Routing TT_RESPONSE to %pM [%c]\n", tt_query->dst, (tt_query->flags & TT_FULL_TABLE ? 'F' : '.')); - tt_query->tt_data = htons(tt_query->tt_data); return route_unicast_packet(skb, recv_if); } break; diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 24e691d..88cfe2a 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1418,7 +1418,7 @@ static bool send_other_tt_response(struct bat_priv *bat_priv,
/* I don't have the requested data */ if (orig_ttvn != req_ttvn || - tt_request->tt_data != req_dst_orig_node->tt_crc) + tt_request->tt_data != htons(req_dst_orig_node->tt_crc)) goto out;
/* If the full table has been explicitly requested */ @@ -1678,7 +1678,7 @@ static void tt_fill_gtable(struct bat_priv *bat_priv,
_tt_update_changes(bat_priv, orig_node, (struct tt_change *)(tt_response + 1), - tt_response->tt_data, tt_response->ttvn); + ntohs(tt_response->tt_data), tt_response->ttvn);
spin_lock_bh(&orig_node->tt_buff_lock); kfree(orig_node->tt_buff); @@ -1733,7 +1733,8 @@ void handle_tt_response(struct bat_priv *bat_priv,
bat_dbg(DBG_TT, bat_priv, "Received TT_RESPONSE from %pM for ttvn %d t_size: %d [%c]\n", - tt_response->src, tt_response->ttvn, tt_response->tt_data, + tt_response->src, tt_response->ttvn, + ntohs(tt_response->tt_data), (tt_response->flags & TT_FULL_TABLE ? 'F' : '.'));
/* we should have never asked a backbone gw */ @@ -1747,7 +1748,8 @@ void handle_tt_response(struct bat_priv *bat_priv, if (tt_response->flags & TT_FULL_TABLE) tt_fill_gtable(bat_priv, tt_response); else - tt_update_changes(bat_priv, orig_node, tt_response->tt_data, + tt_update_changes(bat_priv, orig_node, + ntohs(tt_response->tt_data), tt_response->ttvn, (struct tt_change *)(tt_response + 1));
From: Al Viro viro@ZenIV.linux.org.uk
Keep it net-endian
Signed-off-by: Al Viro viro@zeniv.linux.org.uk Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bat_iv_ogm.c | 10 ++-------- net/batman-adv/packet.h | 2 +- 2 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 896287e..ec3542c 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -547,8 +547,6 @@ static void bat_iv_ogm_forward(struct orig_node *orig_node, "Forwarding packet: tq: %i, ttl: %i\n", batman_ogm_packet->tq, batman_ogm_packet->header.ttl);
- batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc); - /* switch of primaries first hop flag when forwarding */ batman_ogm_packet->flags &= ~PRIMARIES_FIRST_HOP; if (is_single_hop_neigh) @@ -724,7 +722,7 @@ update_tt: tt_update_orig(bat_priv, orig_node, tt_buff, batman_ogm_packet->tt_num_changes, batman_ogm_packet->ttvn, - batman_ogm_packet->tt_crc); + ntohs(batman_ogm_packet->tt_crc));
if (orig_node->gw_flags != batman_ogm_packet->gw_flags) gw_node_update(bat_priv, orig_node, @@ -972,7 +970,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, ethhdr->h_source, if_incoming->net_dev->name, if_incoming->net_dev->dev_addr, batman_ogm_packet->orig, batman_ogm_packet->prev_sender, ntohl(batman_ogm_packet->seqno), - batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc, + batman_ogm_packet->ttvn, ntohs(batman_ogm_packet->tt_crc), batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq, batman_ogm_packet->header.ttl, batman_ogm_packet->header.version, has_directlink_flag); @@ -1219,10 +1217,6 @@ static int bat_iv_ogm_receive(struct sk_buff *skb,
/* unpack the aggregated packets and process them one by one */ do { - /* network to host order for our 32bit seqno and the - orig_interval */ - batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc); - tt_buff = packet_buff + buff_pos + BATMAN_OGM_HLEN;
bat_iv_ogm_process(ethhdr, batman_ogm_packet, diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index 372fc88..033d994 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -124,7 +124,7 @@ struct batman_ogm_packet { uint8_t tq; uint8_t tt_num_changes; uint8_t ttvn; /* translation table version number */ - uint16_t tt_crc; + __be16 tt_crc; } __packed;
#define BATMAN_OGM_HLEN sizeof(struct batman_ogm_packet)
From: Matthias Schiffer mschiffer@universe-factory.net
The primary entry and the corresponding secondary entries are missing when there are no neighbors on the primary interface. This also causes the TT entries to miss and makes nodes with multiply secondary interface fall apart since there is no way to see they are related without a primary entry.
Fix this by always emitting a primary entry.
Signed-off-by: Matthias Schiffer mschiffer@universe-factory.net Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/vis.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c index 411c0e1..01d5da5 100644 --- a/net/batman-adv/vis.c +++ b/net/batman-adv/vis.c @@ -207,7 +207,6 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) int vis_server = atomic_read(&bat_priv->vis_mode); size_t buff_pos, buf_size; char *buff; - int compare;
primary_if = primary_if_get_selected(bat_priv); if (!primary_if) @@ -228,14 +227,18 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) entries = (struct vis_info_entry *) ((char *)packet + sizeof(*packet));
+ vis_data_insert_interface(packet->vis_orig, + &vis_if_list, true); + for (j = 0; j < packet->entries; j++) { if (entries[j].quality == 0) continue; - compare = - compare_eth(entries[j].src, packet->vis_orig); + if (compare_eth(entries[j].src, + packet->vis_orig)) + continue; vis_data_insert_interface(entries[j].src, &vis_if_list, - compare); + false); }
hlist_for_each_entry(entry, pos, &vis_if_list, list) { @@ -276,14 +279,18 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) entries = (struct vis_info_entry *) ((char *)packet + sizeof(*packet));
+ vis_data_insert_interface(packet->vis_orig, + &vis_if_list, true); + for (j = 0; j < packet->entries; j++) { if (entries[j].quality == 0) continue; - compare = - compare_eth(entries[j].src, packet->vis_orig); + if (compare_eth(entries[j].src, + packet->vis_orig)) + continue; vis_data_insert_interface(entries[j].src, &vis_if_list, - compare); + false); }
hlist_for_each_entry(entry, pos, &vis_if_list, list) {
From: Marek Lindner lindner_marek@yahoo.de
Prior to this patch the translation table code made assumptions about how the routing protocol works and where its buffers are stored (to directly modify them). Each protocol now calls the tt code with the relevant pointers, thereby abstracting the code.
Signed-off-by: Marek Lindner lindner_marek@yahoo.de Acked-by: Antonio Quartulli ordex@autistici.org Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/bat_iv_ogm.c | 14 ++-- net/batman-adv/send.c | 74 +-------------------- net/batman-adv/translation-table.c | 124 ++++++++++++++++++++++++++++++------ net/batman-adv/translation-table.h | 7 +- net/batman-adv/types.h | 3 +- 5 files changed, 118 insertions(+), 104 deletions(-)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index ec3542c..6e0859f 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -559,22 +559,28 @@ static void bat_iv_ogm_forward(struct orig_node *orig_node, if_incoming, 0, bat_iv_ogm_fwd_send_time()); }
-static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, - int tt_num_changes) +static void bat_iv_ogm_schedule(struct hard_iface *hard_iface) { struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); struct batman_ogm_packet *batman_ogm_packet; struct hard_iface *primary_if; - int vis_server; + int vis_server, tt_num_changes = 0;
vis_server = atomic_read(&bat_priv->vis_mode); primary_if = 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, + BATMAN_OGM_HLEN); + batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
/* change sequence number to network order */ batman_ogm_packet->seqno = htonl((uint32_t)atomic_read(&hard_iface->seqno)); + atomic_inc(&hard_iface->seqno);
batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn); batman_ogm_packet->tt_crc = htons(bat_priv->tt_crc); @@ -593,8 +599,6 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, else batman_ogm_packet->gw_flags = NO_FLAGS;
- atomic_inc(&hard_iface->seqno); - slide_own_bcast_window(hard_iface); bat_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff, hard_iface->packet_len, hard_iface, 1, diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index f5ff364..79f8973 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -77,62 +77,9 @@ send_skb_err: return NET_XMIT_DROP; }
-static void realloc_packet_buffer(struct hard_iface *hard_iface, - int new_len) -{ - unsigned char *new_buff; - - new_buff = kmalloc(new_len, GFP_ATOMIC); - - /* keep old buffer if kmalloc should fail */ - if (new_buff) { - memcpy(new_buff, hard_iface->packet_buff, - BATMAN_OGM_HLEN); - - kfree(hard_iface->packet_buff); - hard_iface->packet_buff = new_buff; - hard_iface->packet_len = new_len; - } -} - -/* when calling this function (hard_iface == primary_if) has to be true */ -static int prepare_packet_buffer(struct bat_priv *bat_priv, - struct hard_iface *hard_iface) -{ - int new_len; - - new_len = BATMAN_OGM_HLEN + - tt_len((uint8_t)atomic_read(&bat_priv->tt_local_changes)); - - /* if we have too many changes for one packet don't send any - * and wait for the tt table request which will be fragmented */ - if (new_len > hard_iface->soft_iface->mtu) - new_len = BATMAN_OGM_HLEN; - - realloc_packet_buffer(hard_iface, new_len); - - bat_priv->tt_crc = tt_local_crc(bat_priv); - - /* reset the sending counter */ - atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX); - - return tt_changes_fill_buffer(bat_priv, - hard_iface->packet_buff + BATMAN_OGM_HLEN, - hard_iface->packet_len - BATMAN_OGM_HLEN); -} - -static int reset_packet_buffer(struct bat_priv *bat_priv, - struct hard_iface *hard_iface) -{ - realloc_packet_buffer(hard_iface, BATMAN_OGM_HLEN); - return 0; -} - void schedule_bat_ogm(struct hard_iface *hard_iface) { struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); - struct hard_iface *primary_if; - int tt_num_changes = -1;
if ((hard_iface->if_status == IF_NOT_IN_USE) || (hard_iface->if_status == IF_TO_BE_REMOVED)) @@ -148,26 +95,7 @@ void schedule_bat_ogm(struct hard_iface *hard_iface) if (hard_iface->if_status == IF_TO_BE_ACTIVATED) hard_iface->if_status = IF_ACTIVE;
- primary_if = primary_if_get_selected(bat_priv); - - if (hard_iface == primary_if) { - /* if at least one change happened */ - if (atomic_read(&bat_priv->tt_local_changes) > 0) { - tt_commit_changes(bat_priv); - tt_num_changes = prepare_packet_buffer(bat_priv, - hard_iface); - } - - /* if the changes have been sent often enough */ - if (!atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt)) - tt_num_changes = reset_packet_buffer(bat_priv, - hard_iface); - } - - if (primary_if) - hardif_free_ref(primary_if); - - bat_priv->bat_algo_ops->bat_ogm_schedule(hard_iface, tt_num_changes); + bat_priv->bat_algo_ops->bat_ogm_schedule(hard_iface); }
static void forw_packet_free(struct forw_packet *forw_packet) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 88cfe2a..a1a51cc 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -275,14 +275,64 @@ out: tt_global_entry_free_ref(tt_global_entry); }
-int tt_changes_fill_buffer(struct bat_priv *bat_priv, - unsigned char *buff, int buff_len) +static void tt_realloc_packet_buff(unsigned char **packet_buff, + int *packet_buff_len, int min_packet_len, + int new_packet_len) +{ + unsigned char *new_buff; + + new_buff = kmalloc(new_packet_len, GFP_ATOMIC); + + /* keep old buffer if kmalloc should fail */ + if (new_buff) { + memcpy(new_buff, *packet_buff, min_packet_len); + kfree(*packet_buff); + *packet_buff = new_buff; + *packet_buff_len = new_packet_len; + } +} + +static void tt_prepare_packet_buff(struct bat_priv *bat_priv, + unsigned char **packet_buff, + int *packet_buff_len, int min_packet_len) +{ + struct hard_iface *primary_if; + int req_len; + + primary_if = primary_if_get_selected(bat_priv); + + req_len = min_packet_len; + req_len += tt_len(atomic_read(&bat_priv->tt_local_changes)); + + /* if we have too many changes for one packet don't send any + * and wait for the tt table request which will be fragmented + */ + if ((!primary_if) || (req_len > primary_if->soft_iface->mtu)) + req_len = min_packet_len; + + tt_realloc_packet_buff(packet_buff, packet_buff_len, + min_packet_len, req_len); + + if (primary_if) + hardif_free_ref(primary_if); +} + +static int tt_changes_fill_buff(struct bat_priv *bat_priv, + unsigned char **packet_buff, + int *packet_buff_len, int min_packet_len) { - int count = 0, tot_changes = 0; struct tt_change_node *entry, *safe; + int count = 0, tot_changes = 0, new_len; + unsigned char *tt_buff;
- if (buff_len > 0) - tot_changes = buff_len / tt_len(1); + tt_prepare_packet_buff(bat_priv, packet_buff, + packet_buff_len, min_packet_len); + + new_len = *packet_buff_len - min_packet_len; + tt_buff = *packet_buff + min_packet_len; + + if (new_len > 0) + tot_changes = new_len / tt_len(1);
spin_lock_bh(&bat_priv->tt_changes_list_lock); atomic_set(&bat_priv->tt_local_changes, 0); @@ -290,7 +340,7 @@ int tt_changes_fill_buffer(struct bat_priv *bat_priv, list_for_each_entry_safe(entry, safe, &bat_priv->tt_changes_list, list) { if (count < tot_changes) { - memcpy(buff + tt_len(count), + memcpy(tt_buff + tt_len(count), &entry->change, sizeof(struct tt_change)); count++; } @@ -304,17 +354,15 @@ int tt_changes_fill_buffer(struct bat_priv *bat_priv, kfree(bat_priv->tt_buff); bat_priv->tt_buff_len = 0; bat_priv->tt_buff = NULL; - /* We check whether this new OGM has no changes due to size - * problems */ - if (buff_len > 0) { - /** - * if kmalloc() fails we will reply with the full table + /* check whether this new OGM has no changes due to size problems */ + if (new_len > 0) { + /* if kmalloc() fails we will reply with the full table * instead of providing the diff */ - bat_priv->tt_buff = kmalloc(buff_len, GFP_ATOMIC); + bat_priv->tt_buff = kmalloc(new_len, GFP_ATOMIC); if (bat_priv->tt_buff) { - memcpy(bat_priv->tt_buff, buff, buff_len); - bat_priv->tt_buff_len = buff_len; + memcpy(bat_priv->tt_buff, tt_buff, new_len); + bat_priv->tt_buff_len = new_len; } } spin_unlock_bh(&bat_priv->tt_buff_lock); @@ -1105,7 +1153,7 @@ static uint16_t tt_global_crc(struct bat_priv *bat_priv, }
/* Calculates the checksum of the local table */ -uint16_t tt_local_crc(struct bat_priv *bat_priv) +static uint16_t batadv_tt_local_crc(struct bat_priv *bat_priv) { uint16_t total = 0, total_one; struct hashtable_t *hash = bat_priv->tt_local_hash; @@ -2025,20 +2073,56 @@ static void tt_local_purge_pending_clients(struct bat_priv *bat_priv)
}
-void tt_commit_changes(struct bat_priv *bat_priv) +static int tt_commit_changes(struct bat_priv *bat_priv, + unsigned char **packet_buff, int *packet_buff_len, + int packet_min_len) { - uint16_t changed_num = tt_set_flags(bat_priv->tt_local_hash, - TT_CLIENT_NEW, false); - /* all the reset entries have now to be effectively counted as local - * entries */ + uint16_t changed_num = 0; + + if (atomic_read(&bat_priv->tt_local_changes) < 1) + return -ENOENT; + + changed_num = tt_set_flags(bat_priv->tt_local_hash, + TT_CLIENT_NEW, false); + + /* all reset entries have to be counted as local entries */ atomic_add(changed_num, &bat_priv->num_local_tt); tt_local_purge_pending_clients(bat_priv); + bat_priv->tt_crc = batadv_tt_local_crc(bat_priv);
/* Increment the TTVN only once per OGM interval */ atomic_inc(&bat_priv->ttvn); bat_dbg(DBG_TT, bat_priv, "Local changes committed, updating to ttvn %u\n", (uint8_t)atomic_read(&bat_priv->ttvn)); bat_priv->tt_poss_change = false; + + /* reset the sending counter */ + atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX); + + return tt_changes_fill_buff(bat_priv, packet_buff, + packet_buff_len, packet_min_len); +} + +/* when calling this function (hard_iface == primary_if) has to be true */ +int batadv_tt_append_diff(struct bat_priv *bat_priv, + unsigned char **packet_buff, int *packet_buff_len, + int packet_min_len) +{ + int tt_num_changes; + + /* if at least one change happened */ + tt_num_changes = tt_commit_changes(bat_priv, packet_buff, + packet_buff_len, packet_min_len); + + /* if the changes have been sent often enough */ + if ((tt_num_changes < 0) && + (!atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt))) { + tt_realloc_packet_buff(packet_buff, packet_buff_len, + packet_min_len, packet_min_len); + tt_num_changes = 0; + } + + return tt_num_changes; }
bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst) diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index c43374d..d6ea30f 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -23,8 +23,6 @@ #define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
int tt_len(int changes_num); -int tt_changes_fill_buffer(struct bat_priv *bat_priv, - unsigned char *buff, int buff_len); int tt_init(struct bat_priv *bat_priv); void tt_local_add(struct net_device *soft_iface, const uint8_t *addr, int ifindex); @@ -41,18 +39,19 @@ void tt_global_del_orig(struct bat_priv *bat_priv, struct orig_node *orig_node, const char *message); struct orig_node *transtable_search(struct bat_priv *bat_priv, const uint8_t *src, const uint8_t *addr); -uint16_t tt_local_crc(struct bat_priv *bat_priv); void tt_free(struct bat_priv *bat_priv); bool send_tt_response(struct bat_priv *bat_priv, struct tt_query_packet *tt_request); bool is_my_client(struct bat_priv *bat_priv, const uint8_t *addr); void handle_tt_response(struct bat_priv *bat_priv, struct tt_query_packet *tt_response); -void tt_commit_changes(struct bat_priv *bat_priv); bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst); void tt_update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node, const unsigned char *tt_buff, uint8_t tt_num_changes, uint8_t ttvn, uint16_t tt_crc); +int batadv_tt_append_diff(struct bat_priv *bat_priv, + unsigned char **packet_buff, int *packet_buff_len, + int packet_min_len); bool tt_global_client_is_roaming(struct bat_priv *bat_priv, uint8_t *addr);
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 6b569de..bf71d52 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -405,8 +405,7 @@ struct bat_algo_ops { /* called when primary interface is selected / changed */ void (*bat_primary_iface_set)(struct hard_iface *hard_iface); /* prepare a new outgoing OGM for the send queue */ - void (*bat_ogm_schedule)(struct hard_iface *hard_iface, - int tt_num_changes); + void (*bat_ogm_schedule)(struct hard_iface *hard_iface); /* send scheduled OGM */ void (*bat_ogm_emit)(struct forw_packet *forw_packet); };
Each time a new log level is added the developer must change either the DBG_ALL enum definition and the hard coded value in the bat_sysfs.c for the log_level attribute max value. This is extremely error prone. With this patch the code directly uses DBG_ALL in the sysfs definition
Signed-off-by: Antonio Quartulli ordex@autistici.org Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/bat_sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c index 62f4f6c..dc1edbe 100644 --- a/net/batman-adv/bat_sysfs.c +++ b/net/batman-adv/bat_sysfs.c @@ -445,7 +445,7 @@ BAT_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE, static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth, store_gw_bwidth); #ifdef CONFIG_BATMAN_ADV_DEBUG -BAT_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, 15, NULL); +BAT_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, DBG_ALL, NULL); #endif
static struct bat_attribute *mesh_attrs[] = {
From: Matthias Schiffer mschiffer@universe-factory.net
To ensure an entry isn't added twice all comparisons have to be protected by the hash line write spinlock. This doesn't really hurt as the case that it is tried to add an element already present to the hash shouldn't occur very often, so in most cases the lock would have have to be taken anyways.
Signed-off-by: Matthias Schiffer mschiffer@universe-factory.net Acked-by: Sven Eckelmann sven@narfation.org Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/hash.h | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h index 93b3c71..3d67ce4 100644 --- a/net/batman-adv/hash.h +++ b/net/batman-adv/hash.h @@ -110,26 +110,23 @@ static inline int hash_add(struct hashtable_t *hash, head = &hash->table[index]; list_lock = &hash->list_locks[index];
- rcu_read_lock(); - __hlist_for_each_rcu(node, head) { + spin_lock_bh(list_lock); + + hlist_for_each(node, head) { if (!compare(node, data)) continue;
ret = 1; - goto err_unlock; + goto unlock; } - rcu_read_unlock();
/* no duplicate found in list, add new element */ - spin_lock_bh(list_lock); hlist_add_head_rcu(data_node, head); - spin_unlock_bh(list_lock);
ret = 0; - goto out;
-err_unlock: - rcu_read_unlock(); +unlock: + spin_unlock_bh(list_lock); out: return ret; }
From: Marek Lindner lindner_marek@yahoo.de
Signed-off-by: Marek Lindner lindner_marek@yahoo.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Antonio Quartulli ordex@autistici.org --- net/batman-adv/gateway_common.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index ca57ac7..6e3b052 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -162,6 +162,9 @@ ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count) **/ gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp, &down, &up);
+ if (atomic_read(&bat_priv->gw_bandwidth) == gw_bandwidth_tmp) + return count; + gw_deselect(bat_priv); bat_info(net_dev, "Changing gateway bandwidth from: '%i' to: '%ld' (propagating: %d%s/%d%s)\n",
From: Antonio Quartulli ordex@autistici.org Date: Mon, 18 Jun 2012 22:39:04 +0200
Hello David, here is our first set of changes intended for next-next/linux-3.6.
Patch 2 fixes a major bug in the TranslationTable code where the old value of skb->data is used for memory access even if the data was relocated. Patches 4, 10, 11, 13, 14 are endianess-related cleanups that we wrote thanks to Al Viro's advice and help. Thanks to Martin Hundebøll batman-adv now supports the ethtool API and can export several counters that are specific to our module (patch 5). Then patch 16 improves the routing protocol API by making part of the TranslationTable code routing agnostic. The rest are minor fixes and other cleanups.
Pulled, thanks.
b.a.t.m.a.n@lists.open-mesh.org
-
Antonio Quartulli -
David Miller