From patchwork Mon Nov 7 15:47:01 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 1333 Return-Path: Received: from confino.investici.org (investici.nine.ch [217.150.252.179]) by open-mesh.org (Postfix) with ESMTPS id CD7C66007B2 for ; Mon, 7 Nov 2011 16:47:11 +0100 (CET) Authentication-Results: open-mesh.org; dkim=pass (1024-bit key) header.i=@autistici.org; dkim-adsp=pass Received: from [217.150.252.179] (confino [217.150.252.179]) (Authenticated sender: ordex@autistici.org) by localhost (Postfix) with ESMTPSA id F21FAC866E; Mon, 7 Nov 2011 15:47:10 +0000 (UTC) X-DKIM: Sendmail DKIM Filter v2.8.2 confino.investici.org F21FAC866E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=autistici.org; s=stigmate; t=1320680831; bh=ABDTCDJ4iShMNL5DWcnoT2VMYIwIApO61L9Fb8aGmEc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=JEfmm/MJcWQDMEdglGFxZe5jFnXsvPl4KxXS711fLJWNbqo3mDP4uB0/krQndDDwL Y+saziYq4UoSPxfLNtAAR5n1JQm1vQv0X8dhpMhHlLFRDaUjRlvNl4S/+2SCZKM+lk dIAD/9IHE2QH+WFk80CjAUgZh2RwcDtPkXovYprM= From: Antonio Quartulli To: b.a.t.m.a.n@lists.open-mesh.org Date: Mon, 7 Nov 2011 16:47:01 +0100 Message-Id: <1320680821-5904-1-git-send-email-ordex@autistici.org> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1320001741-18351-1-git-send-email-ordex@autistici.org> References: <1320001741-18351-1-git-send-email-ordex@autistici.org> Subject: [B.A.T.M.A.N.] [PATCHv2] batman-adv: generalise tt_local_reset_flags() X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.13 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: Mon, 07 Nov 2011 15:47:12 -0000 The tt_local_reset_flags() is actually used for one use case only. It is not generalised enough to be used indifferent situations. This patch make it general enough in order to let other code use it whenever a flag set is requested over the whole hash table (passed as parameter). The function is now called tt_set_flags() Signed-off-by: Antonio Quartulli --- - argument new_value substituted with enable - boolean logic more readable inside tt_set_flags() translation-table.c | 36 ++++++++++++++++++++++++------------ 1 files changed, 24 insertions(+), 12 deletions(-) diff --git a/translation-table.c b/translation-table.c index 76134bc..379529d 100644 --- a/translation-table.c +++ b/translation-table.c @@ -1695,19 +1695,20 @@ void tt_free(struct bat_priv *bat_priv) kfree(bat_priv->tt_buff); } -/* This function will reset the specified flags from all the entries in - * the given hash table and will increment num_local_tt for each involved - * entry */ -static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags) +/* This function will flip to new_value (if not already) the specified flags for + * all the entries in the given hash table and returns the number of modified + * entries */ +static uint16_t tt_set_flags(struct hashtable_t *hash, uint16_t flags, + bool enable) { uint32_t i; - struct hashtable_t *hash = bat_priv->tt_local_hash; + uint16_t changed_num = 0; struct hlist_head *head; struct hlist_node *node; struct tt_common_entry *tt_common_entry; if (!hash) - return; + goto out; for (i = 0; i < hash->size; i++) { head = &hash->table[i]; @@ -1715,14 +1716,21 @@ static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags) rcu_read_lock(); hlist_for_each_entry_rcu(tt_common_entry, node, head, hash_entry) { - if (!(tt_common_entry->flags & flags)) - continue; - tt_common_entry->flags &= ~flags; - atomic_inc(&bat_priv->num_local_tt); + if (enable) { + if ((tt_common_entry->flags & flags) == flags) + continue; + tt_common_entry->flags |= flags; + } else { + if (!(tt_common_entry->flags & flags)) + continue; + tt_common_entry->flags &= ~flags; + } + changed_num++; } rcu_read_unlock(); } - +out: + return changed_num; } /* Purge out all the tt local entries marked with TT_CLIENT_PENDING */ @@ -1766,7 +1774,11 @@ static void tt_local_purge_pending_clients(struct bat_priv *bat_priv) void tt_commit_changes(struct bat_priv *bat_priv) { - tt_local_reset_flags(bat_priv, TT_CLIENT_NEW); + 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 */ + atomic_add(changed_num, &bat_priv->num_local_tt); tt_local_purge_pending_clients(bat_priv); /* Increment the TTVN only once per OGM interval */