From patchwork Tue Jul 13 16:07:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felix Fietkau X-Patchwork-Id: 475052 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E9B5C11F67 for ; Tue, 13 Jul 2021 16:08:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF75A61183 for ; Tue, 13 Jul 2021 16:08:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230039AbhGMQKt (ORCPT ); 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Received: from p54ae93f7.dip0.t-ipconnect.de ([84.174.147.247] helo=localhost.localdomain) by ds12 with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1m3Kwm-0008TX-5J; Tue, 13 Jul 2021 18:07:48 +0200 From: Felix Fietkau To: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org, pablo@netfilter.org, ryder.lee@mediatek.com Subject: [RFC 1/7] mac80211: add support for .ndo_fill_forward_path Date: Tue, 13 Jul 2021 18:07:39 +0200 Message-Id: <20210713160745.59707-2-nbd@nbd.name> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210713160745.59707-1-nbd@nbd.name> References: <20210713160745.59707-1-nbd@nbd.name> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org This allows drivers to provide a destination device + info for flow offload Only supported in combination with 802.3 encap offload Signed-off-by: Felix Fietkau --- include/net/mac80211.h | 5 ++++ net/mac80211/driver-ops.h | 22 +++++++++++++++ net/mac80211/ieee80211_i.h | 2 +- net/mac80211/iface.c | 58 ++++++++++++++++++++++++++++++++++++++ net/mac80211/trace.h | 7 +++++ 5 files changed, 93 insertions(+), 1 deletion(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index d8a1d09a2141..c09ec24f8348 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -4242,6 +4242,11 @@ struct ieee80211_ops { void (*sta_set_decap_offload)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, bool enabled); + int (*net_fill_forward_path)(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct net_device_path_ctx *ctx, + struct net_device_path *path); }; /** diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index bcb7cc06db3d..f487002660e5 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -1447,4 +1447,26 @@ static inline void drv_sta_set_decap_offload(struct ieee80211_local *local, trace_drv_return_void(local); } +static inline int drv_net_fill_forward_path(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta, + struct net_device_path_ctx *ctx, + struct net_device_path *path) +{ + int ret = -EOPNOTSUPP; + + sdata = get_bss_sdata(sdata); + if (!check_sdata_in_driver(sdata)) + return -EIO; + + trace_drv_net_fill_forward_path(local, sdata, sta); + if (local->ops->net_fill_forward_path) + ret = local->ops->net_fill_forward_path(&local->hw, + &sdata->vif, sta, + ctx, path); + trace_drv_return_int(local, ret); + + return ret; +} + #endif /* __MAC80211_DRIVER_OPS */ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 22549b95d1aa..5b96e79402a1 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1451,7 +1451,7 @@ struct ieee80211_local { }; static inline struct ieee80211_sub_if_data * -IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) +IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev) { return netdev_priv(dev); } diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 1e5e9fc45523..fe093da63243 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -717,6 +717,7 @@ static const struct net_device_ops ieee80211_dataif_ops = { .ndo_set_mac_address = ieee80211_change_mac, .ndo_select_queue = ieee80211_netdev_select_queue, .ndo_get_stats64 = ieee80211_get_stats64, + .ndo_fill_forward_path = ieee80211_netdev_fill_forward_path, }; static u16 ieee80211_monitor_select_queue(struct net_device *dev, @@ -758,6 +759,63 @@ static const struct net_device_ops ieee80211_monitorif_ops = { .ndo_get_stats64 = ieee80211_get_stats64, }; + +static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx, + struct net_device_path *path) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_local *local; + struct sta_info *sta; + int ret = -ENOENT; + + sdata = IEEE80211_DEV_TO_SUB_IF(ctx->dev); + local = sdata->local; + + if (!local->ops->net_fill_forward_path) + return -EOPNOTSUPP; + + rcu_read_lock(); + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + sta = rcu_dereference(sdata->u.vlan.sta); + if (sta) + break; + if (!sdata->wdev.use_4addr) + goto out; + fallthrough; + case NL80211_IFTYPE_AP: + if (is_multicast_ether_addr(ctx->daddr)) + goto out; + sta = sta_info_get_bss(sdata, ctx->daddr); + break; + case NL80211_IFTYPE_STATION: + if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { + sta = sta_info_get(sdata, ctx->daddr); + if (sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) + goto out; + + break; + } + } + + sta = sta_info_get(sdata, sdata->u.mgd.bssid); + break; + default: + goto out; + } + + if (!sta) + goto out; + + ret = drv_net_fill_forward_path(local, sdata, &sta->sta, ctx, path); +out: + rcu_read_unlock(); + + return ret; +} + + static const struct net_device_ops ieee80211_dataif_8023_ops = { .ndo_open = ieee80211_open, .ndo_stop = ieee80211_stop, diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index f6ef15366938..611bff1e1cd8 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -2825,6 +2825,13 @@ DEFINE_EVENT(sta_flag_evt, drv_sta_set_decap_offload, TP_ARGS(local, sdata, sta, enabled) ); +DEFINE_EVENT(sta_event, drv_net_fill_forward_path, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta), + TP_ARGS(local, sdata, sta) +); + #endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */ #undef TRACE_INCLUDE_PATH