From patchwork Sun Feb 9 03:48:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 3819 Return-Path: Received-SPF: None (no SPF record) identity=mailfrom; client-ip=212.227.15.4; helo=mout.web.de; envelope-from=linus.luessing@web.de; receiver=b.a.t.m.a.n@lists.open-mesh.org Received: from mout.web.de (mout.web.de [212.227.15.4]) by open-mesh.org (Postfix) with ESMTPS id 886066022D2 for ; Sun, 9 Feb 2014 04:48:40 +0100 (CET) Received: from localhost ([95.211.148.154]) by smtp.web.de (mrweb003) with ESMTPSA (Nemesis) id 0MKrOS-1WCLNm1UR6-0001Mm for ; Sun, 09 Feb 2014 04:48:40 +0100 From: =?UTF-8?q?Linus=20L=C3=BCssing?= To: b.a.t.m.a.n@lists.open-mesh.org Date: Sun, 9 Feb 2014 04:48:54 +0100 Message-Id: <1391917738-4483-3-git-send-email-linus.luessing@web.de> X-Mailer: git-send-email 1.9.rc1 In-Reply-To: <1391917738-4483-1-git-send-email-linus.luessing@web.de> References: <1391917738-4483-1-git-send-email-linus.luessing@web.de> MIME-Version: 1.0 X-Provags-ID: V03:K0:RNgwHyt1z3gdvXBXtu414BkhMT7ZAfIKQhexGSnH6DkBj3yKno8 FhiVc+z8mPrcgpVVUWK4EMgtJySwHhDNbJ5V6/a83Zwr9NDMHxGqlTKwsocjcwiqdWDRA62 S2hi+Ngoez1RkVgnMMArUv1vJ85wUjXwXw3uGf6IoCoRu2OcAqPlJ+G/SAs6pgXoN2sj1h0 NwVu6zZLc4IXUEgpM5Ihg== Subject: [B.A.T.M.A.N.] [PATCHv13 2/6] batman-adv: introduce capability initialization bitfield X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Feb 2014 03:48:40 -0000 The new bitfield allows us to keep track whether capability subsets of an originator have gone through their initialization phase yet. The translation table is the only user right now, but a new one will be added soon. Signed-off-by: Linus Lüssing --- originator.c | 1 - translation-table.c | 12 +++++++----- types.h | 7 ++++--- 3 files changed, 11 insertions(+), 9 deletions(-) diff --git a/originator.c b/originator.c index 9f2da37..24a9300 100644 --- a/originator.c +++ b/originator.c @@ -664,7 +664,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, /* extra reference for return */ atomic_set(&orig_node->refcount, 2); - orig_node->tt_initialised = false; orig_node->bat_priv = bat_priv; ether_addr_copy(orig_node->orig, addr); batadv_dat_init_orig_node_addr(orig_node); diff --git a/translation-table.c b/translation-table.c index deb2a82..6b5268d 100644 --- a/translation-table.c +++ b/translation-table.c @@ -1774,7 +1774,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv, } spin_unlock_bh(list_lock); } - orig_node->tt_initialised = false; + orig_node->capa_initialized &= ~BATADV_ORIG_CAPA_HAS_TT; } static bool batadv_tt_global_to_purge(struct batadv_tt_global_entry *tt_global, @@ -2726,7 +2726,7 @@ static void _batadv_tt_update_changes(struct batadv_priv *bat_priv, return; } } - orig_node->tt_initialised = true; + orig_node->capa_initialized |= BATADV_ORIG_CAPA_HAS_TT; } static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv, @@ -3216,13 +3216,15 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv, uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn); struct batadv_tvlv_tt_vlan_data *tt_vlan; bool full_table = true; + bool has_tt_init; tt_vlan = (struct batadv_tvlv_tt_vlan_data *)tt_buff; + has_tt_init = orig_node->capa_initialized & BATADV_ORIG_CAPA_HAS_TT; + /* orig table not initialised AND first diff is in the OGM OR the ttvn * increased by one -> we can apply the attached changes */ - if ((!orig_node->tt_initialised && ttvn == 1) || - ttvn - orig_ttvn == 1) { + if ((!has_tt_init && ttvn == 1) || ttvn - orig_ttvn == 1) { /* the OGM could not contain the changes due to their size or * because they have already been sent BATADV_TT_OGM_APPEND_MAX * times. @@ -3262,7 +3264,7 @@ static void batadv_tt_update_orig(struct batadv_priv *bat_priv, /* if we missed more than one change or our tables are not * in sync anymore -> request fresh tt data */ - if (!orig_node->tt_initialised || ttvn != orig_ttvn || + if (!has_tt_init || ttvn != orig_ttvn || !batadv_tt_global_check_crc(orig_node, tt_vlan, tt_num_vlan)) { request_table: diff --git a/types.h b/types.h index d553264..b46117c 100644 --- a/types.h +++ b/types.h @@ -205,13 +205,12 @@ struct batadv_orig_bat_iv { * @last_seen: time when last packet from this node was received * @bcast_seqno_reset: time when the broadcast seqno window was reset * @capabilities: announced capabilities of this originator + * @capa_initialized: bitfield to remember whether a capability was initialized * @last_ttvn: last seen translation table version number * @tt_buff: last tt changeset this node received from the orig node * @tt_buff_len: length of the last tt changeset this node received from the * orig node * @tt_buff_lock: lock that protects tt_buff and tt_buff_len - * @tt_initialised: bool keeping track of whether or not this node have received - * any translation table information from the orig node yet * @tt_lock: prevents from updating the table while reading it. Table update is * made up by two operations (data structure update and metdata -CRC/TTVN- * recalculation) and they have to be executed atomically in order to avoid @@ -248,11 +247,11 @@ struct batadv_orig_node { unsigned long last_seen; unsigned long bcast_seqno_reset; uint8_t capabilities; + uint8_t capa_initialized; atomic_t last_ttvn; unsigned char *tt_buff; int16_t tt_buff_len; spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */ - bool tt_initialised; /* prevents from changing the table while reading it */ spinlock_t tt_lock; DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); @@ -282,10 +281,12 @@ struct batadv_orig_node { * enum batadv_orig_capabilities - orig node capabilities * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled + * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */ enum batadv_orig_capabilities { BATADV_ORIG_CAPA_HAS_DAT = BIT(0), BATADV_ORIG_CAPA_HAS_NC = BIT(1), + BATADV_ORIG_CAPA_HAS_TT = BIT(2), }; /**