From patchwork Fri Jun 10 10:40:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sriram R X-Patchwork-Id: 581961 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C7B2C43334 for ; Fri, 10 Jun 2022 10:46:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348532AbiFJKqt (ORCPT ); Fri, 10 Jun 2022 06:46:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348031AbiFJKov (ORCPT ); Fri, 10 Jun 2022 06:44:51 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8501288C05 for ; Fri, 10 Jun 2022 03:41:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654857671; x=1686393671; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=juFrN/ZbORZzjoPVPzrK0mlWKBUj3szWqCUAnXXvzRw=; b=NG2B/HjCVCQ7gixXkHokr2Pu8XUESh8zncms1q5AdXT8v/Et3YhcJiuJ vgwpYAjjzeO6MhQnNQzK+Ldo1tp7FLi4naPQ5CLCUww1U/OB2ImeVwnPv t8SE6Fp9MhgAoXjeImPYLRmiKRdKTcgRZj6KkFL6EBH/fIB14fUNxfidq 0=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 10 Jun 2022 03:41:10 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2022 03:41:10 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Fri, 10 Jun 2022 03:41:10 -0700 Received: from srirrama-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Fri, 10 Jun 2022 03:41:08 -0700 From: Sriram R To: CC: , Sriram R Subject: [PATCH 2/3] cfg80211: Add provision for changing mesh header cache size Date: Fri, 10 Jun 2022 16:10:38 +0530 Message-ID: <1654857639-12346-3-git-send-email-quic_srirrama@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1654857639-12346-1-git-send-email-quic_srirrama@quicinc.com> References: <1654857639-12346-1-git-send-email-quic_srirrama@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Add provision to update the header cache size. The default cache size is 50 header entries corresponding to different external destination. In case there is a need for a bigger cache depending on the network topology, the hdr_cache_size config can be updated. Signed-off-by: Sriram R --- include/net/cfg80211.h | 3 +++ include/uapi/linux/nl80211.h | 4 ++++ net/wireless/mesh.c | 3 +++ net/wireless/nl80211.c | 6 +++++- 4 files changed, 15 insertions(+), 1 deletion(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 34bdf1d..ec19c62 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2155,6 +2155,8 @@ struct bss_parameters { * not be the optimal decision as a multi-hop route might be better. So * if using this setting you will likely also want to disable * dot11MeshForwarding and use another mesh routing protocol on top. + * @hdr_cache_size: Maximum number of entries the mesh header cache will + * hold before flushing old entries. */ struct mesh_config { u16 dot11MeshRetryTimeout; @@ -2188,6 +2190,7 @@ struct mesh_config { u16 dot11MeshAwakeWindowDuration; u32 plink_timeout; bool dot11MeshNolearn; + u16 hdr_cache_size; }; /** diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index d9490e3..b22c497 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -4556,6 +4556,9 @@ enum nl80211_mesh_power_mode { * will advertise that it is connected to a authentication server * in the mesh formation field. * + * @NL80211_MESHCONF_HEADER_CACHE_SIZE: Maximum size of the header cache + * used for caching headers corresponding to an external destination. + * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use */ enum nl80211_meshconf_params { @@ -4591,6 +4594,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_CONNECTED_TO_GATE, NL80211_MESHCONF_NOLEARN, NL80211_MESHCONF_CONNECTED_TO_AS, + NL80211_MESHCONF_HEADER_CACHE_SIZE, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index e4e3631..f606777 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -21,6 +21,8 @@ #define MESH_ROOT_CONFIRMATION_INTERVAL 2000 #define MESH_DEFAULT_PLINK_TIMEOUT 1800 /* timeout in seconds */ +#define MESH_DEFAULT_HEADER_CACHE_SIZE 50 + /* * Minimum interval between two consecutive PREQs originated by the same * interface @@ -79,6 +81,7 @@ const struct mesh_config default_mesh_config = { .dot11MeshAwakeWindowDuration = MESH_DEFAULT_AWAKE_WINDOW, .plink_timeout = MESH_DEFAULT_PLINK_TIMEOUT, .dot11MeshNolearn = false, + .hdr_cache_size = MESH_DEFAULT_HEADER_CACHE_SIZE, }; const struct mesh_setup default_mesh_setup = { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index dee0fa9..eae69ea 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7672,7 +7672,9 @@ static int nl80211_get_mesh_config(struct sk_buff *skb, nla_put_u8(msg, NL80211_MESHCONF_NOLEARN, cur_params.dot11MeshNolearn) || nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS, - cur_params.dot11MeshConnectedToAuthServer)) + cur_params.dot11MeshConnectedToAuthServer) || + nla_put_u16(msg, NL80211_MESHCONF_HEADER_CACHE_SIZE, + cur_params.hdr_cache_size)) goto nla_put_failure; nla_nest_end(msg, pinfoattr); genlmsg_end(msg, hdr); @@ -7888,6 +7890,8 @@ do { \ NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32); FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask, NL80211_MESHCONF_NOLEARN, nla_get_u8); + FILL_IN_MESH_PARAM_IF_SET(tb, cfg, hdr_cache_size, mask, + NL80211_MESHCONF_HEADER_CACHE_SIZE, nla_get_u16); if (mask_out) *mask_out = mask;