From: Felix Fietkau Date: Sun, 26 Feb 2023 12:36:58 +0000 (+0100) Subject: mac80211: rework mesh fast xmit implementation X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2f96580c5282cd138d2bb858f7f27f539c8a63e1;p=openwrt%2Fstaging%2Frmilecki.git mac80211: rework mesh fast xmit implementation Refactor in order to make use of generic fast xmit functions Fix issues with mesh SA/DA addressing Signed-off-by: Felix Fietkau --- diff --git a/package/kernel/mac80211/patches/subsys/319-wifi-mac80211-mesh-fast-xmit-support.patch b/package/kernel/mac80211/patches/subsys/319-wifi-mac80211-mesh-fast-xmit-support.patch index f18e1bb377b..b802960103a 100644 --- a/package/kernel/mac80211/patches/subsys/319-wifi-mac80211-mesh-fast-xmit-support.patch +++ b/package/kernel/mac80211/patches/subsys/319-wifi-mac80211-mesh-fast-xmit-support.patch @@ -1,33 +1,32 @@ -From: Sriram R -Date: Thu, 18 Aug 2022 12:35:42 +0530 +From: Felix Fietkau +Date: Sun, 26 Feb 2023 13:53:08 +0100 Subject: [PATCH] wifi: mac80211: mesh fast xmit support -Currently fast xmit is supported in AP, STA and other device types where -the destination doesn't change for the lifetime of its association by -caching the static parts of the header that can be reused directly for -every Tx such as addresses and updates only mutable header fields such as -PN. -This technique is not directly applicable for a Mesh device type due -to the dynamic nature of the topology and protocol. The header is built -based on the destination mesh device which is proxying a certain external -device and based on the Mesh destination the next hop changes. -And the RA/A1 which is the next hop for reaching the destination can -vary during runtime as per the best route based on airtime. To accommodate -these changes and to come up with a solution to avoid overhead during header -generation, the headers comprising the MAC, Mesh and LLC part are cached -whenever data for a certain external destination is sent. -This cached header is reused every time a data is sent to that external -destination. +Previously, fast xmit only worked on interface types where initially a +sta lookup is performed, and a cached header can be attached to the sta, +requiring only some fields to be updated at runtime. + +This technique is not directly applicable for a mesh device type due +to the dynamic nature of the topology and protocol. There are more +addresses that need to be filled, and there is an extra header with a +dynamic length based on the addressing mode. + +Change the code to cache entries contain a copy of the mesh subframe header + +bridge tunnel header, as well as an embedded struct ieee80211_fast_tx, which +contains the information for building the 802.11 header. + +Add a mesh specific early fast xmit call, which looks up a cached entry and +adds only the mesh subframe header, before passing it over to the generic +fast xmit code. To ensure the changes in network are reflected in these cached headers, flush affected cached entries on path changes, as well as other conditions that currently trigger a fast xmit check in other modes (key changes etc.) -In order to keep the cache small, use a short timeout for expiring cache -entries. +This code is loosely based on a previous implementation by: +Sriram R -Co-developed-by: Felix Fietkau -Signed-off-by: Sriram R +Signed-off-by: Ryder Lee Signed-off-by: Felix Fietkau --- @@ -37,24 +36,23 @@ Signed-off-by: Felix Fietkau extern const struct cfg80211_ops mac80211_config_ops; struct ieee80211_local; -+struct mhdr_cache_entry; ++struct ieee80211_mesh_fast_tx; /* Maximum number of broadcast/multicast frames to buffer when some of the * associated stations are using power saving. */ -@@ -655,6 +656,20 @@ struct mesh_table { +@@ -655,6 +656,19 @@ struct mesh_table { atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ }; +/** -+ * struct mesh_hdr_cache - mesh fast xmit header cache ++ * struct mesh_tx_cache - mesh fast xmit header cache + * -+ * @rhead: hash table containing struct mhdr_cache_entry, using skb DA as key -+ * @walk_head: linked list containing all mhdr_cache_entry objects -+ * @walk_lock: lock protecting walk_head and rhead -+ * @enabled: indicates if header cache is initialized ++ * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key ++ * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects ++ * @walk_lock: lock protecting walk_head and rht + */ -+struct mesh_hdr_cache { -+ struct rhashtable rhead; ++struct mesh_tx_cache { ++ struct rhashtable rht; + struct hlist_head walk_head; + spinlock_t walk_lock; +}; @@ -62,102 +60,209 @@ Signed-off-by: Felix Fietkau struct ieee80211_if_mesh { struct timer_list housekeeping_timer; struct timer_list mesh_path_timer; -@@ -733,6 +748,7 @@ struct ieee80211_if_mesh { +@@ -733,6 +747,7 @@ struct ieee80211_if_mesh { struct mesh_table mpp_paths; /* Store paths for MPP&MAP */ int mesh_paths_generation; int mpp_paths_generation; -+ struct mesh_hdr_cache hdr_cache; ++ struct mesh_tx_cache tx_cache; }; #ifdef CPTCFG_MAC80211_MESH -@@ -1998,6 +2014,9 @@ int ieee80211_tx_control_port(struct wip +@@ -1998,6 +2013,11 @@ int ieee80211_tx_control_port(struct wip int link_id, u64 *cookie); int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, const u8 *buf, size_t len); -+void __ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata, -+ struct mhdr_cache_entry *entry, -+ struct sk_buff *skb); ++void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta, ++ struct ieee80211_fast_tx *fast_tx, ++ struct sk_buff *skb, bool ampdu, ++ const u8 *da, const u8 *sa); /* HT */ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c -@@ -780,6 +780,8 @@ static void ieee80211_mesh_housekeeping( +@@ -10,6 +10,7 @@ + #include + #include "ieee80211_i.h" + #include "mesh.h" ++#include "wme.h" + #include "driver-ops.h" + + static int mesh_allocated; +@@ -698,6 +699,102 @@ ieee80211_mesh_update_bss_params(struct + __le32_to_cpu(he_oper->he_oper_params); + } + ++bool ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata, ++ struct sk_buff *skb, u32 ctrl_flags) ++{ ++ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; ++ struct ieee80211_mesh_fast_tx *entry; ++ struct ieee80211s_hdr *meshhdr; ++ u8 sa[ETH_ALEN] __aligned(2); ++ struct tid_ampdu_tx *tid_tx; ++ struct sta_info *sta; ++ bool copy_sa = false; ++ u16 ethertype; ++ u8 tid; ++ ++ if (ctrl_flags & IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP) ++ return false; ++ ++ if (ifmsh->mshcfg.dot11MeshNolearn) ++ return false; ++ ++ /* Add support for these cases later */ ++ if (ifmsh->ps_peers_light_sleep || ifmsh->ps_peers_deep_sleep) ++ return false; ++ ++ if (is_multicast_ether_addr(skb->data)) ++ return false; ++ ++ ethertype = (skb->data[12] << 8) | skb->data[13]; ++ if (ethertype < ETH_P_802_3_MIN) ++ return false; ++ ++ if (skb->sk && skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS) ++ return false; ++ ++ if (skb->ip_summed == CHECKSUM_PARTIAL) { ++ skb_set_transport_header(skb, skb_checksum_start_offset(skb)); ++ if (skb_checksum_help(skb)) ++ return false; ++ } ++ ++ entry = mesh_fast_tx_get(sdata, skb->data); ++ if (!entry) ++ return false; ++ ++ if (skb_headroom(skb) + 2 * ETH_ALEN < entry->hdrlen + ++ entry->fast_tx.hdr_len) ++ return false; ++ ++ sta = rcu_dereference(entry->mpath->next_hop); ++ if (!sta) ++ return false; ++ ++ tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; ++ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); ++ if (tid_tx) { ++ if (!test_bit(HT_AGG_STATE_OPERATIONAL, &tid_tx->state)) ++ return false; ++ if (tid_tx->timeout) ++ tid_tx->last_tx = jiffies; ++ } ++ ++ /* If the skb is shared we need to obtain our own copy */ ++ if (skb_shared(skb)) { ++ struct sk_buff *oskb = skb; ++ ++ skb = skb_clone(skb, GFP_ATOMIC); ++ if (!skb) ++ return false; ++ ++ kfree_skb(oskb); ++ } ++ ++ skb_set_queue_mapping(skb, ieee80211_select_queue(sdata, sta, skb)); ++ ++ meshhdr = (struct ieee80211s_hdr *)entry->hdr; ++ if ((meshhdr->flags & MESH_FLAGS_AE) == MESH_FLAGS_AE_A5_A6) { ++ /* preserve SA from eth header for 6-addr frames */ ++ ether_addr_copy(sa, skb->data + ETH_ALEN); ++ copy_sa = true; ++ } ++ ++ memcpy(skb_push(skb, entry->hdrlen - 2 * ETH_ALEN), entry->hdr, ++ entry->hdrlen); ++ ++ meshhdr = (struct ieee80211s_hdr *)skb->data; ++ put_unaligned_le32(atomic_inc_return(&sdata->u.mesh.mesh_seqnum), ++ &meshhdr->seqnum); ++ meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL; ++ if (copy_sa) ++ ether_addr_copy(meshhdr->eaddr2, sa); ++ ++ __ieee80211_xmit_fast(sdata, sta, &entry->fast_tx, skb, tid_tx, ++ entry->mpath->dst, sdata->vif.addr); ++ ++ return true; ++} ++ + /** + * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame + * @hdr: 802.11 frame header +@@ -780,6 +877,8 @@ static void ieee80211_mesh_housekeeping( changed = mesh_accept_plinks_update(sdata); ieee80211_mbss_info_change_notify(sdata, changed); -+ mesh_hdr_cache_gc(sdata); ++ mesh_fast_tx_gc(sdata); + mod_timer(&ifmsh->housekeeping_timer, round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL)); --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h -@@ -122,11 +122,49 @@ struct mesh_path { +@@ -122,11 +122,41 @@ struct mesh_path { u8 rann_snd_addr[ETH_ALEN]; u32 rann_metric; unsigned long last_preq_to_root; -+ unsigned long fast_xmit_check; ++ unsigned long fast_tx_check; bool is_root; bool is_gate; u32 path_change_count; }; -+#define MESH_HEADER_CACHE_MAX_SIZE 512 -+#define MESH_HEADER_CACHE_THRESHOLD_SIZE 384 -+#define MESH_HEADER_CACHE_TIMEOUT 8000 /* msecs */ -+#define MESH_HEADER_MAX_LEN 68 /* mac+mesh+rfc1042 hdr */ ++#define MESH_FAST_TX_CACHE_MAX_SIZE 512 ++#define MESH_FAST_TX_CACHE_THRESHOLD_SIZE 384 ++#define MESH_FAST_TX_CACHE_TIMEOUT 8000 /* msecs */ + +/** -+ * struct mhdr_cache_entry - Cached Mesh header entry -+ * @addr_key: The Ethernet DA which is the key for this entry -+ * @hdr: The cached header -+ * @machdr_len: Total length of the mac header -+ * @hdrlen: Length of this header entry -+ * @key: Key corresponding to the nexthop stored in the header -+ * @pn_offs: Offset to PN which is updated for every xmit -+ * @band: band used for tx -+ * @walk_list: list containing all the cached header entries ++ * struct ieee80211_mesh_fast_tx - cached mesh fast tx entry + * @rhash: rhashtable pointer -+ * @mpath: The Mesh path corresponding to the Mesh DA -+ * @mppath: The MPP entry corresponding to this DA ++ * @addr_key: The Ethernet DA which is the key for this entry ++ * @fast_tx: base fast_tx data ++ * @hdr: cached mesh and rfc1042 headers ++ * @hdrlen: length of mesh + rfc1042 ++ * @walk_list: list containing all the fast tx entries ++ * @mpath: mesh path corresponding to the Mesh DA ++ * @mppath: MPP entry corresponding to this DA + * @timestamp: Last used time of this entry -+ * @rcu: rcu to free this entry -+ * @path_change_count: Stored path change value corresponding to the mpath + */ -+struct mhdr_cache_entry { ++struct ieee80211_mesh_fast_tx { ++ struct rhash_head rhash; + u8 addr_key[ETH_ALEN] __aligned(2); -+ u8 hdr[MESH_HEADER_MAX_LEN]; -+ u16 machdr_len; ++ ++ struct ieee80211_fast_tx fast_tx; ++ u8 hdr[sizeof(struct ieee80211s_hdr) + sizeof(rfc1042_header)]; + u16 hdrlen; -+ u8 pn_offs; -+ u8 band; -+ struct ieee80211_key *key; -+ struct hlist_node walk_list; -+ struct rhash_head rhash; ++ + struct mesh_path *mpath, *mppath; ++ struct hlist_node walk_list; + unsigned long timestamp; -+ struct rcu_head rcu; +}; + /* Recent multicast cache */ /* RMC_BUCKETS must be a power of 2, maximum 256 */ #define RMC_BUCKETS 256 -@@ -298,6 +336,18 @@ void mesh_path_discard_frame(struct ieee +@@ -298,6 +328,20 @@ void mesh_path_discard_frame(struct ieee void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata); bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt); -+struct mhdr_cache_entry * -+mesh_get_cached_hdr(struct ieee80211_sub_if_data *sdata, const u8 *addr); -+void mesh_cache_hdr(struct ieee80211_sub_if_data *sdata, -+ struct sk_buff *skb, struct mesh_path *mpath); -+void mesh_hdr_cache_gc(struct ieee80211_sub_if_data *sdata); -+void mesh_hdr_cache_flush_mpp(struct ieee80211_sub_if_data *sdata, -+ const u8 *addr); -+void mesh_hdr_cache_flush_mpath(struct mesh_path *mpath); -+void mesh_hdr_cache_flush_sta(struct ieee80211_sub_if_data *sdata, -+ struct sta_info *sta); -+void mesh_refresh_path(struct ieee80211_sub_if_data *sdata, ++struct ieee80211_mesh_fast_tx * ++mesh_fast_tx_get(struct ieee80211_sub_if_data *sdata, const u8 *addr); ++bool ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata, ++ struct sk_buff *skb, u32 ctrl_flags); ++void mesh_fast_tx_cache(struct ieee80211_sub_if_data *sdata, ++ struct sk_buff *skb, struct mesh_path *mpath); ++void mesh_fast_tx_gc(struct ieee80211_sub_if_data *sdata); ++void mesh_fast_tx_flush_addr(struct ieee80211_sub_if_data *sdata, ++ const u8 *addr); ++void mesh_fast_tx_flush_mpath(struct mesh_path *mpath); ++void mesh_fast_tx_flush_sta(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta); ++void mesh_path_refresh(struct ieee80211_sub_if_data *sdata, + struct mesh_path *mpath, const u8 *addr); #ifdef CPTCFG_MAC80211_MESH @@ -189,7 +294,7 @@ Signed-off-by: Felix Fietkau mesh_path_activate(mpath); spin_unlock_bh(&mpath->state_lock); + if (flush_mpath) -+ mesh_hdr_cache_flush_mpath(mpath); ++ mesh_fast_tx_flush_mpath(mpath); ewma_mesh_fail_avg_init(&sta->mesh->fail_avg); /* init it at a low value - 0 start is tricky */ ewma_mesh_fail_avg_add(&sta->mesh->fail_avg, 1); @@ -210,24 +315,15 @@ Signed-off-by: Felix Fietkau mesh_path_activate(mpath); spin_unlock_bh(&mpath->state_lock); + if (flush_mpath) -+ mesh_hdr_cache_flush_mpath(mpath); ++ mesh_fast_tx_flush_mpath(mpath); ewma_mesh_fail_avg_init(&sta->mesh->fail_avg); /* init it at a low value - 0 start is tricky */ ewma_mesh_fail_avg_add(&sta->mesh->fail_avg, 1); -@@ -977,7 +986,7 @@ free: - * Locking: the function must be called from within a rcu read lock block. - * - */ --static void mesh_queue_preq(struct mesh_path *mpath, u8 flags) -+void mesh_queue_preq(struct mesh_path *mpath, u8 flags) - { - struct ieee80211_sub_if_data *sdata = mpath->sdata; - struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; @@ -1215,6 +1224,20 @@ static int mesh_nexthop_lookup_nolearn(s return 0; } -+void mesh_refresh_path(struct ieee80211_sub_if_data *sdata, ++void mesh_path_refresh(struct ieee80211_sub_if_data *sdata, + struct mesh_path *mpath, const u8 *addr) +{ + if (mpath->flags & (MESH_PATH_REQ_QUEUED | MESH_PATH_FIXED | @@ -244,7 +340,7 @@ Signed-off-by: Felix Fietkau /** * mesh_nexthop_lookup - put the appropriate next hop on a mesh frame. Calling * this function is considered "using" the associated mpath, so preempt a path -@@ -1242,19 +1265,18 @@ int mesh_nexthop_lookup(struct ieee80211 +@@ -1242,19 +1265,15 @@ int mesh_nexthop_lookup(struct ieee80211 if (!mpath || !(mpath->flags & MESH_PATH_ACTIVE)) return -ENOENT; @@ -255,18 +351,15 @@ Signed-off-by: Felix Fietkau - !(mpath->flags & MESH_PATH_RESOLVING) && - !(mpath->flags & MESH_PATH_FIXED)) - mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH); -+ mesh_refresh_path(sdata, mpath, hdr->addr4); ++ mesh_path_refresh(sdata, mpath, hdr->addr4); next_hop = rcu_dereference(mpath->next_hop); if (next_hop) { memcpy(hdr->addr1, next_hop->sta.addr, ETH_ALEN); memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); ieee80211_mps_set_frame_flags(sdata, next_hop, hdr); -+ /* Cache the whole header so as to use next time rather than resolving -+ * and building it every time -+ */ + if (ieee80211_hw_check(&sdata->local->hw, SUPPORT_FAST_XMIT)) -+ mesh_cache_hdr(sdata, skb, mpath); ++ mesh_fast_tx_cache(sdata, skb, mpath); return 0; } @@ -284,37 +377,37 @@ Signed-off-by: Felix Fietkau .hashfn = mesh_table_hash, }; -+static const struct rhashtable_params mesh_hdr_rht_params = { ++static const struct rhashtable_params fast_tx_rht_params = { + .nelem_hint = 10, + .automatic_shrinking = true, -+ .key_len = ETH_ALEN, -+ .key_offset = offsetof(struct mhdr_cache_entry, addr_key), -+ .head_offset = offsetof(struct mhdr_cache_entry, rhash), ++ .key_len = ETH_ALEN, ++ .key_offset = offsetof(struct ieee80211_mesh_fast_tx, addr_key), ++ .head_offset = offsetof(struct ieee80211_mesh_fast_tx, rhash), + .hashfn = mesh_table_hash, +}; + -+static void __mesh_hdr_cache_entry_free(void *ptr, void *tblptr) ++static void __mesh_fast_tx_entry_free(void *ptr, void *tblptr) +{ -+ struct mhdr_cache_entry *mhdr = ptr; ++ struct ieee80211_mesh_fast_tx *entry = ptr; + -+ kfree_rcu(mhdr, rcu); ++ kfree_rcu(entry, fast_tx.rcu_head); +} + -+static void mesh_hdr_cache_deinit(struct ieee80211_sub_if_data *sdata) ++static void mesh_fast_tx_deinit(struct ieee80211_sub_if_data *sdata) +{ -+ struct mesh_hdr_cache *cache; ++ struct mesh_tx_cache *cache; + -+ cache = &sdata->u.mesh.hdr_cache; -+ rhashtable_free_and_destroy(&cache->rhead, -+ __mesh_hdr_cache_entry_free, NULL); ++ cache = &sdata->u.mesh.tx_cache; ++ rhashtable_free_and_destroy(&cache->rht, ++ __mesh_fast_tx_entry_free, NULL); +} + -+static void mesh_hdr_cache_init(struct ieee80211_sub_if_data *sdata) ++static void mesh_fast_tx_init(struct ieee80211_sub_if_data *sdata) +{ -+ struct mesh_hdr_cache *cache; ++ struct mesh_tx_cache *cache; + -+ cache = &sdata->u.mesh.hdr_cache; -+ rhashtable_init(&cache->rhead, &mesh_hdr_rht_params); ++ cache = &sdata->u.mesh.tx_cache; ++ rhashtable_init(&cache->rht, &fast_tx_rht_params); + INIT_HLIST_HEAD(&cache->walk_head); + spin_lock_init(&cache->walk_lock); +} @@ -322,40 +415,40 @@ Signed-off-by: Felix Fietkau static inline bool mpath_expired(struct mesh_path *mpath) { return (mpath->flags & MESH_PATH_ACTIVE) && -@@ -381,6 +417,254 @@ struct mesh_path *mesh_path_new(struct i +@@ -381,6 +417,243 @@ struct mesh_path *mesh_path_new(struct i return new_mpath; } -+static void mesh_hdr_cache_entry_free(struct mesh_hdr_cache *cache, -+ struct mhdr_cache_entry *entry) ++static void mesh_fast_tx_entry_free(struct mesh_tx_cache *cache, ++ struct ieee80211_mesh_fast_tx *entry) +{ + hlist_del_rcu(&entry->walk_list); -+ rhashtable_remove_fast(&cache->rhead, &entry->rhash, mesh_hdr_rht_params); -+ kfree_rcu(entry, rcu); ++ rhashtable_remove_fast(&cache->rht, &entry->rhash, fast_tx_rht_params); ++ kfree_rcu(entry, fast_tx.rcu_head); +} + -+struct mhdr_cache_entry * -+mesh_get_cached_hdr(struct ieee80211_sub_if_data *sdata, const u8 *addr) ++struct ieee80211_mesh_fast_tx * ++mesh_fast_tx_get(struct ieee80211_sub_if_data *sdata, const u8 *addr) +{ -+ struct mhdr_cache_entry *entry; -+ struct mesh_hdr_cache *cache; ++ struct ieee80211_mesh_fast_tx *entry; ++ struct mesh_tx_cache *cache; + -+ cache = &sdata->u.mesh.hdr_cache; -+ entry = rhashtable_lookup(&cache->rhead, addr, mesh_hdr_rht_params); ++ cache = &sdata->u.mesh.tx_cache; ++ entry = rhashtable_lookup(&cache->rht, addr, fast_tx_rht_params); + if (!entry) + return NULL; + + if (!(entry->mpath->flags & MESH_PATH_ACTIVE) || + mpath_expired(entry->mpath)) { + spin_lock_bh(&cache->walk_lock); -+ entry = rhashtable_lookup(&cache->rhead, addr, mesh_hdr_rht_params); ++ entry = rhashtable_lookup(&cache->rht, addr, fast_tx_rht_params); + if (entry) -+ mesh_hdr_cache_entry_free(cache, entry); ++ mesh_fast_tx_entry_free(cache, entry); + spin_unlock_bh(&cache->walk_lock); + return NULL; + } + -+ mesh_refresh_path(sdata, entry->mpath, NULL); ++ mesh_path_refresh(sdata, entry->mpath, NULL); + if (entry->mppath) + entry->mppath->exp_time = jiffies; + entry->timestamp = jiffies; @@ -363,33 +456,30 @@ Signed-off-by: Felix Fietkau + return entry; +} + -+void mesh_cache_hdr(struct ieee80211_sub_if_data *sdata, -+ struct sk_buff *skb, struct mesh_path *mpath) ++void mesh_fast_tx_cache(struct ieee80211_sub_if_data *sdata, ++ struct sk_buff *skb, struct mesh_path *mpath) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); -+ struct mesh_hdr_cache *cache; -+ struct mhdr_cache_entry *mhdr, *old_mhdr; ++ struct ieee80211_mesh_fast_tx *entry, *prev; ++ struct ieee80211_mesh_fast_tx build = {}; + struct ieee80211s_hdr *meshhdr; -+ struct sta_info *sta; ++ struct mesh_tx_cache *cache; + struct ieee80211_key *key; + struct mesh_path *mppath; -+ u16 meshhdr_len; -+ u8 pn_offs = 0; -+ int hdrlen; -+ -+ if (sdata->noack_map) -+ return; ++ struct sta_info *sta; ++ u8 *qc; + -+ if (!ieee80211_is_data_qos(hdr->frame_control)) ++ if (sdata->noack_map || ++ !ieee80211_is_data_qos(hdr->frame_control)) + return; + -+ hdrlen = ieee80211_hdrlen(hdr->frame_control); -+ meshhdr = (struct ieee80211s_hdr *)(skb->data + hdrlen); -+ meshhdr_len = ieee80211_get_mesh_hdrlen(meshhdr); ++ build.fast_tx.hdr_len = ieee80211_hdrlen(hdr->frame_control); ++ meshhdr = (struct ieee80211s_hdr *)(skb->data + build.fast_tx.hdr_len); ++ build.hdrlen = ieee80211_get_mesh_hdrlen(meshhdr); + -+ cache = &sdata->u.mesh.hdr_cache; -+ if (atomic_read(&cache->rhead.nelems) >= MESH_HEADER_CACHE_MAX_SIZE) ++ cache = &sdata->u.mesh.tx_cache; ++ if (atomic_read(&cache->rht.nelems) >= MESH_FAST_TX_CACHE_MAX_SIZE) + return; + + sta = rcu_dereference(mpath->next_hop); @@ -401,6 +491,7 @@ Signed-off-by: Felix Fietkau + mppath = mpp_path_lookup(sdata, meshhdr->eaddr1); + if (!mppath) + return; ++ build.mppath = mppath; + } else if (ieee80211_has_a4(hdr->frame_control)) { + mppath = mpath; + } else { @@ -408,10 +499,10 @@ Signed-off-by: Felix Fietkau + } + + /* rate limit, in case fast xmit can't be enabled */ -+ if (mppath->fast_xmit_check == jiffies) ++ if (mppath->fast_tx_check == jiffies) + return; + -+ mppath->fast_xmit_check = jiffies; ++ mppath->fast_tx_check = jiffies; + + /* + * Same use of the sta lock as in ieee80211_check_fast_xmit, in order @@ -421,6 +512,7 @@ Signed-off-by: Felix Fietkau + key = rcu_access_pointer(sta->ptk[sta->ptk_idx]); + if (!key) + key = rcu_access_pointer(sdata->default_unicast_key); ++ build.fast_tx.key = key; + + if (key) { + bool gen_iv, iv_spc; @@ -436,60 +528,50 @@ Signed-off-by: Felix Fietkau + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_CCMP_256: + if (gen_iv) -+ pn_offs = hdrlen; ++ build.fast_tx.pn_offs = build.fast_tx.hdr_len; + if (gen_iv || iv_spc) -+ hdrlen += IEEE80211_CCMP_HDR_LEN; ++ build.fast_tx.hdr_len += IEEE80211_CCMP_HDR_LEN; + break; + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + if (gen_iv) -+ pn_offs = hdrlen; ++ build.fast_tx.pn_offs = build.fast_tx.hdr_len; + if (gen_iv || iv_spc) -+ hdrlen += IEEE80211_GCMP_HDR_LEN; ++ build.fast_tx.hdr_len += IEEE80211_GCMP_HDR_LEN; + break; + default: + goto unlock_sta; + } + } + -+ if (WARN_ON_ONCE(hdrlen + meshhdr_len + sizeof(rfc1042_header) > -+ MESH_HEADER_MAX_LEN)) -+ goto unlock_sta; -+ -+ mhdr = kzalloc(sizeof(*mhdr), GFP_ATOMIC); -+ if (!mhdr) -+ goto unlock_sta; ++ memcpy(build.addr_key, mppath->dst, ETH_ALEN); ++ build.timestamp = jiffies; ++ build.fast_tx.band = info->band; ++ build.fast_tx.da_offs = offsetof(struct ieee80211_hdr, addr3); ++ build.fast_tx.sa_offs = offsetof(struct ieee80211_hdr, addr4); ++ build.mpath = mpath; ++ memcpy(build.hdr, meshhdr, build.hdrlen); ++ memcpy(build.hdr + build.hdrlen, rfc1042_header, sizeof(rfc1042_header)); ++ build.hdrlen += sizeof(rfc1042_header); ++ memcpy(build.fast_tx.hdr, hdr, build.fast_tx.hdr_len); ++ ++ hdr = (struct ieee80211_hdr *)build.fast_tx.hdr; ++ if (build.fast_tx.key) ++ hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); + -+ memcpy(mhdr->addr_key, mppath->dst, ETH_ALEN); -+ mhdr->machdr_len = hdrlen; -+ mhdr->hdrlen = mhdr->machdr_len + meshhdr_len + sizeof(rfc1042_header); -+ mhdr->mpath = mpath; -+ if (meshhdr->flags & MESH_FLAGS_AE) -+ mhdr->mppath = mppath; -+ mhdr->key = key; -+ mhdr->timestamp = jiffies; -+ mhdr->band = info->band; -+ mhdr->pn_offs = pn_offs; -+ -+ if (pn_offs) { -+ memcpy(mhdr->hdr, skb->data, pn_offs); -+ memcpy(mhdr->hdr + mhdr->machdr_len, skb->data + pn_offs, -+ mhdr->hdrlen - mhdr->machdr_len); -+ } else { -+ memcpy(mhdr->hdr, skb->data, mhdr->hdrlen); -+ } ++ qc = ieee80211_get_qos_ctl(hdr); ++ qc[1] |= IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8; + -+ if (key) { -+ hdr = (struct ieee80211_hdr *)mhdr->hdr; -+ hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); -+ } ++ entry = kmemdup(&build, sizeof(build), GFP_ATOMIC); ++ if (!entry) ++ goto unlock_sta; + + spin_lock_bh(&cache->walk_lock); -+ old_mhdr = rhashtable_lookup_get_insert_fast(&cache->rhead, -+ &mhdr->rhash, -+ mesh_hdr_rht_params); -+ if (unlikely(IS_ERR(old_mhdr))) { -+ kfree(mhdr); ++ prev = rhashtable_lookup_get_insert_fast(&cache->rht, ++ &entry->rhash, ++ fast_tx_rht_params); ++ if (unlikely(IS_ERR(prev))) { ++ kfree(entry); + goto unlock_cache; + } + @@ -497,14 +579,14 @@ Signed-off-by: Felix Fietkau + * replace any previous entry in the hash table, in case we're + * replacing it with a different type (e.g. mpath -> mpp) + */ -+ if (unlikely(old_mhdr)) { -+ rhashtable_replace_fast(&cache->rhead, &old_mhdr->rhash, -+ &mhdr->rhash, mesh_hdr_rht_params); -+ hlist_del_rcu(&old_mhdr->walk_list); -+ kfree_rcu(old_mhdr, rcu); ++ if (unlikely(prev)) { ++ rhashtable_replace_fast(&cache->rht, &prev->rhash, ++ &entry->rhash, fast_tx_rht_params); ++ hlist_del_rcu(&prev->walk_list); ++ kfree_rcu(prev, fast_tx.rcu_head); + } + -+ hlist_add_head(&mhdr->walk_list, &cache->walk_head); ++ hlist_add_head(&entry->walk_list, &cache->walk_head); + +unlock_cache: + spin_unlock_bh(&cache->walk_lock); @@ -512,112 +594,112 @@ Signed-off-by: Felix Fietkau + spin_unlock_bh(&sta->lock); +} + -+void mesh_hdr_cache_gc(struct ieee80211_sub_if_data *sdata) ++void mesh_fast_tx_gc(struct ieee80211_sub_if_data *sdata) +{ -+ unsigned long timeout = msecs_to_jiffies(MESH_HEADER_CACHE_TIMEOUT); -+ struct mesh_hdr_cache *cache; -+ struct mhdr_cache_entry *entry; ++ unsigned long timeout = msecs_to_jiffies(MESH_FAST_TX_CACHE_TIMEOUT); ++ struct mesh_tx_cache *cache; ++ struct ieee80211_mesh_fast_tx *entry; + struct hlist_node *n; + -+ cache = &sdata->u.mesh.hdr_cache; -+ if (atomic_read(&cache->rhead.nelems) < MESH_HEADER_CACHE_THRESHOLD_SIZE) ++ cache = &sdata->u.mesh.tx_cache; ++ if (atomic_read(&cache->rht.nelems) < MESH_FAST_TX_CACHE_THRESHOLD_SIZE) + return; + + spin_lock_bh(&cache->walk_lock); + hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) + if (!time_is_after_jiffies(entry->timestamp + timeout)) -+ mesh_hdr_cache_entry_free(cache, entry); ++ mesh_fast_tx_entry_free(cache, entry); + spin_unlock_bh(&cache->walk_lock); +} + -+void mesh_hdr_cache_flush_mpath(struct mesh_path *mpath) ++void mesh_fast_tx_flush_mpath(struct mesh_path *mpath) +{ + struct ieee80211_sub_if_data *sdata = mpath->sdata; -+ struct mesh_hdr_cache *cache = &sdata->u.mesh.hdr_cache; -+ struct mhdr_cache_entry *entry; ++ struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; ++ struct ieee80211_mesh_fast_tx *entry; + struct hlist_node *n; + -+ cache = &sdata->u.mesh.hdr_cache; ++ cache = &sdata->u.mesh.tx_cache; + spin_lock_bh(&cache->walk_lock); + hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) + if (entry->mpath == mpath) -+ mesh_hdr_cache_entry_free(cache, entry); ++ mesh_fast_tx_entry_free(cache, entry); + spin_unlock_bh(&cache->walk_lock); +} + -+void mesh_hdr_cache_flush_sta(struct ieee80211_sub_if_data *sdata, -+ struct sta_info *sta) ++void mesh_fast_tx_flush_sta(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta) +{ -+ struct mesh_hdr_cache *cache = &sdata->u.mesh.hdr_cache; -+ struct mhdr_cache_entry *entry; ++ struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; ++ struct ieee80211_mesh_fast_tx *entry; + struct hlist_node *n; + -+ cache = &sdata->u.mesh.hdr_cache; ++ cache = &sdata->u.mesh.tx_cache; + spin_lock_bh(&cache->walk_lock); + hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) + if (rcu_access_pointer(entry->mpath->next_hop) == sta) -+ mesh_hdr_cache_entry_free(cache, entry); ++ mesh_fast_tx_entry_free(cache, entry); + spin_unlock_bh(&cache->walk_lock); +} + -+void mesh_hdr_cache_flush_mpp(struct ieee80211_sub_if_data *sdata, -+ const u8 *addr) ++void mesh_fast_tx_flush_addr(struct ieee80211_sub_if_data *sdata, ++ const u8 *addr) +{ -+ struct mesh_hdr_cache *cache = &sdata->u.mesh.hdr_cache; -+ struct mhdr_cache_entry *entry; ++ struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; ++ struct ieee80211_mesh_fast_tx *entry; + -+ cache = &sdata->u.mesh.hdr_cache; ++ cache = &sdata->u.mesh.tx_cache; + spin_lock_bh(&cache->walk_lock); -+ entry = rhashtable_lookup(&cache->rhead, addr, mesh_hdr_rht_params); ++ entry = rhashtable_lookup(&cache->rht, addr, fast_tx_rht_params); + if (entry) -+ mesh_hdr_cache_entry_free(cache, entry); ++ mesh_fast_tx_entry_free(cache, entry); + spin_unlock_bh(&cache->walk_lock); +} + /** * mesh_path_add - allocate and add a new path to the mesh path table * @dst: destination address of the path (ETH_ALEN length) -@@ -464,6 +748,8 @@ int mpp_path_add(struct ieee80211_sub_if +@@ -464,6 +737,8 @@ int mpp_path_add(struct ieee80211_sub_if if (ret) kfree(new_mpath); + else -+ mesh_hdr_cache_flush_mpp(sdata, dst); ++ mesh_fast_tx_flush_addr(sdata, dst); sdata->u.mesh.mpp_paths_generation++; return ret; -@@ -523,6 +809,10 @@ static void __mesh_path_del(struct mesh_ +@@ -523,6 +798,10 @@ static void __mesh_path_del(struct mesh_ { hlist_del_rcu(&mpath->walk_list); rhashtable_remove_fast(&tbl->rhead, &mpath->rhash, mesh_rht_params); + if (tbl == &mpath->sdata->u.mesh.mpp_paths) -+ mesh_hdr_cache_flush_mpp(mpath->sdata, mpath->dst); ++ mesh_fast_tx_flush_addr(mpath->sdata, mpath->dst); + else -+ mesh_hdr_cache_flush_mpath(mpath); ++ mesh_fast_tx_flush_mpath(mpath); mesh_path_free_rcu(tbl, mpath); } -@@ -747,6 +1037,7 @@ void mesh_path_fix_nexthop(struct mesh_p +@@ -747,6 +1026,7 @@ void mesh_path_fix_nexthop(struct mesh_p mpath->exp_time = 0; mpath->flags = MESH_PATH_FIXED | MESH_PATH_SN_VALID; mesh_path_activate(mpath); -+ mesh_hdr_cache_flush_mpath(mpath); ++ mesh_fast_tx_flush_mpath(mpath); spin_unlock_bh(&mpath->state_lock); ewma_mesh_fail_avg_init(&next_hop->mesh->fail_avg); /* init it at a low value - 0 start is tricky */ -@@ -758,6 +1049,7 @@ void mesh_pathtbl_init(struct ieee80211_ +@@ -758,6 +1038,7 @@ void mesh_pathtbl_init(struct ieee80211_ { mesh_table_init(&sdata->u.mesh.mesh_paths); mesh_table_init(&sdata->u.mesh.mpp_paths); -+ mesh_hdr_cache_init(sdata); ++ mesh_fast_tx_init(sdata); } static -@@ -785,6 +1077,7 @@ void mesh_path_expire(struct ieee80211_s +@@ -785,6 +1066,7 @@ void mesh_path_expire(struct ieee80211_s void mesh_pathtbl_unregister(struct ieee80211_sub_if_data *sdata) { -+ mesh_hdr_cache_deinit(sdata); ++ mesh_fast_tx_deinit(sdata); mesh_table_free(&sdata->u.mesh.mesh_paths); mesh_table_free(&sdata->u.mesh.mpp_paths); } @@ -646,7 +728,7 @@ Signed-off-by: Felix Fietkau + + /* flush fast xmit cache if the address path changed */ + if (update) -+ mesh_hdr_cache_flush_mpp(sdata, proxied_addr); ++ mesh_fast_tx_flush_addr(sdata, proxied_addr); + rcu_read_unlock(); } @@ -658,175 +740,105 @@ Signed-off-by: Felix Fietkau return; + if (ieee80211_vif_is_mesh(&sdata->vif)) -+ mesh_hdr_cache_flush_sta(sdata, sta); ++ mesh_fast_tx_flush_sta(sdata, sta); + /* Locking here protects both the pointer itself, and against concurrent * invocations winning data access races to, e.g., the key pointer that * is used. -@@ -3723,6 +3726,162 @@ free: - kfree_skb(skb); - } +@@ -3402,6 +3405,9 @@ static bool ieee80211_amsdu_aggregate(st + if (sdata->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED) + return false; -+void __ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata, -+ struct mhdr_cache_entry *entry, -+ struct sk_buff *skb) -+{ -+ struct ieee80211_local *local = sdata->local; -+ struct ieee80211_tx_data tx = {}; -+ struct ieee80211_tx_info *info; -+ struct tid_ampdu_tx *tid_tx; -+ struct ieee80211_key *key; -+ struct ieee80211_hdr *hdr; -+ struct mesh_path *mpath; -+ ieee80211_tx_result r; -+ struct sta_info *sta; -+ u8 tid; -+ -+ if (!IS_ENABLED(CPTCFG_MAC80211_MESH)) -+ return; -+ -+ info = IEEE80211_SKB_CB(skb); -+ memset(info, 0, sizeof(*info)); -+ info->band = entry->band; -+ info->control.vif = &sdata->vif; -+ info->flags = IEEE80211_TX_CTL_FIRST_FRAGMENT | -+ IEEE80211_TX_CTL_DONTFRAG; -+ -+ info->control.flags = IEEE80211_TX_CTRL_FAST_XMIT; -+ -+#ifdef CONFIG_MAC80211_DEBUGFS -+ if (local->force_tx_status) -+ info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; -+#endif -+ -+ mpath = entry->mpath; -+ key = entry->key; -+ sta = rcu_dereference(mpath->next_hop); -+ -+ __skb_queue_head_init(&tx.skbs); -+ -+ tx.flags = IEEE80211_TX_UNICAST; -+ tx.local = local; -+ tx.sdata = sdata; -+ tx.sta = sta; -+ tx.key = key; -+ tx.skb = skb; -+ -+ hdr = (struct ieee80211_hdr *)skb->data; -+ tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; -+ *ieee80211_get_qos_ctl(hdr) = tid; -+ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); -+ if (tid_tx) { -+ if (tid_tx->timeout) -+ tid_tx->last_tx = jiffies; -+ info->flags |= IEEE80211_TX_CTL_AMPDU; -+ } -+ -+ ieee80211_aggr_check(sdata, sta, skb); -+ -+ if (ieee80211_queue_skb(local, sdata, sta, skb)) -+ return; -+ -+ r = ieee80211_xmit_fast_finish(sdata, sta, entry->pn_offs, key, &tx); -+ if (r == TX_DROP) { -+ kfree_skb(skb); -+ return; -+ } -+ -+ __skb_queue_tail(&tx.skbs, skb); -+ ieee80211_tx_frags(local, &sdata->vif, sta, &tx.skbs, false); -+} -+ -+ -+static bool ieee80211_mesh_xmit_fast(struct ieee80211_sub_if_data *sdata, -+ struct sk_buff *skb, u32 ctrl_flags) -+{ -+ struct ieee80211_local *local = sdata->local; -+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; -+ struct mhdr_cache_entry *entry; -+ struct ieee80211s_hdr *meshhdr; -+ u8 sa[ETH_ALEN] __aligned(2); -+ struct sta_info *sta; -+ bool copy_sa = false; -+ u16 ethertype; -+ -+ if (!ieee80211_hw_check(&local->hw, SUPPORT_FAST_XMIT)) -+ return false; -+ -+ if (ctrl_flags & IEEE80211_TX_CTRL_SKIP_MPATH_LOOKUP) -+ return false; -+ -+ if (ifmsh->mshcfg.dot11MeshNolearn) -+ return false; -+ -+ /* Add support for these cases later */ -+ if (ifmsh->ps_peers_light_sleep || ifmsh->ps_peers_deep_sleep) -+ return false; -+ -+ if (is_multicast_ether_addr(skb->data)) -+ return false; -+ -+ ethertype = (skb->data[12] << 8) | skb->data[13]; -+ if (ethertype < ETH_P_802_3_MIN) -+ return false; -+ -+ if (skb->sk && skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS) -+ return false; -+ -+ if (skb->ip_summed == CHECKSUM_PARTIAL) { -+ skb_set_transport_header(skb, skb_checksum_start_offset(skb)); -+ if (skb_checksum_help(skb)) -+ return false; -+ } -+ -+ entry = mesh_get_cached_hdr(sdata, skb->data); -+ if (!entry) -+ return false; -+ -+ /* Avoid extra work in this path */ -+ if (skb_headroom(skb) < (entry->hdrlen - ETH_HLEN + 2)) ++ if (ieee80211_vif_is_mesh(&sdata->vif)) + return false; + -+ /* If the skb is shared we need to obtain our own copy */ -+ if (skb_shared(skb)) { -+ struct sk_buff *oskb = skb; -+ -+ skb = skb_clone(skb, GFP_ATOMIC); -+ if (!skb) -+ return false; -+ -+ kfree_skb(oskb); -+ } -+ -+ sta = rcu_dereference(entry->mpath->next_hop); -+ skb_set_queue_mapping(skb, ieee80211_select_queue(sdata, sta, skb)); -+ -+ meshhdr = (struct ieee80211s_hdr *)(entry->hdr + entry->machdr_len); -+ if ((meshhdr->flags & MESH_FLAGS_AE) == MESH_FLAGS_AE_A5_A6) { -+ /* preserve SA from eth header for 6-addr frames */ -+ ether_addr_copy(sa, skb->data + ETH_ALEN); -+ copy_sa = true; -+ } -+ -+ memcpy(skb_push(skb, entry->hdrlen - 2 * ETH_ALEN), entry->hdr, -+ entry->hdrlen); -+ -+ meshhdr = (struct ieee80211s_hdr *)(skb->data + entry->machdr_len); -+ put_unaligned_le32(atomic_inc_return(&sdata->u.mesh.mesh_seqnum), -+ &meshhdr->seqnum); -+ meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL; -+ if (copy_sa) -+ ether_addr_copy(meshhdr->eaddr2, sa); -+ -+ __ieee80211_mesh_xmit_fast(sdata, entry, skb); -+ -+ return true; -+} + if (skb_is_gso(skb)) + return false; + +@@ -3634,10 +3640,11 @@ free: + return NULL; + } + +-static void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, +- struct sta_info *sta, +- struct ieee80211_fast_tx *fast_tx, +- struct sk_buff *skb, u8 tid, bool ampdu) ++void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta, ++ struct ieee80211_fast_tx *fast_tx, ++ struct sk_buff *skb, bool ampdu, ++ const u8 *da, const u8 *sa) + { + struct ieee80211_local *local = sdata->local; + struct ieee80211_hdr *hdr = (void *)fast_tx->hdr; +@@ -3645,8 +3652,6 @@ static void __ieee80211_xmit_fast(struct + struct ieee80211_tx_data tx; + ieee80211_tx_result r; + int hw_headroom = sdata->local->hw.extra_tx_headroom; +- int extra_head = fast_tx->hdr_len - (ETH_HLEN - 2); +- struct ethhdr eth; + + skb = skb_share_check(skb, GFP_ATOMIC); + if (unlikely(!skb)) +@@ -3661,16 +3666,15 @@ static void __ieee80211_xmit_fast(struct + * more room than we already have in 'extra_head' + */ + if (unlikely(ieee80211_skb_resize(sdata, skb, +- max_t(int, extra_head + hw_headroom - ++ max_t(int, fast_tx->hdr_len + hw_headroom - + skb_headroom(skb), 0), + ENCRYPT_NO))) + goto free; + +- memcpy(ð, skb->data, ETH_HLEN - 2); +- hdr = skb_push(skb, extra_head); ++ hdr = skb_push(skb, fast_tx->hdr_len); + memcpy(skb->data, fast_tx->hdr, fast_tx->hdr_len); +- memcpy(skb->data + fast_tx->da_offs, eth.h_dest, ETH_ALEN); +- memcpy(skb->data + fast_tx->sa_offs, eth.h_source, ETH_ALEN); ++ memcpy(skb->data + fast_tx->da_offs, da, ETH_ALEN); ++ memcpy(skb->data + fast_tx->sa_offs, sa, ETH_ALEN); + + info = IEEE80211_SKB_CB(skb); + memset(info, 0, sizeof(*info)); +@@ -3689,7 +3693,7 @@ static void __ieee80211_xmit_fast(struct + #endif + + if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) { +- tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; ++ u8 tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; + *ieee80211_get_qos_ctl(hdr) = tid; + } + +@@ -3732,6 +3736,7 @@ static bool ieee80211_xmit_fast(struct i + struct ieee80211_hdr *hdr = (void *)fast_tx->hdr; + struct tid_ampdu_tx *tid_tx = NULL; + struct sk_buff *next; ++ struct ethhdr eth; + u8 tid = IEEE80211_NUM_TIDS; + + /* control port protocol needs a lot of special handling */ +@@ -3757,14 +3762,18 @@ static bool ieee80211_xmit_fast(struct i + } + } + ++ memcpy(ð, skb->data, ETH_HLEN - 2); + - static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata, - struct sta_info *sta, - struct ieee80211_fast_tx *fast_tx, -@@ -4244,8 +4403,14 @@ void __ieee80211_subif_start_xmit(struct + /* after this point (skb is modified) we cannot return false */ ++ skb_pull(skb, ETH_HLEN - 2); + skb = ieee80211_tx_skb_fixup(skb, ieee80211_sdata_netdev_features(sdata)); + if (!skb) + return true; + + skb_list_walk_safe(skb, skb, next) { + skb_mark_not_on_list(skb); +- __ieee80211_xmit_fast(sdata, sta, fast_tx, skb, tid, tid_tx); ++ __ieee80211_xmit_fast(sdata, sta, fast_tx, skb, tid_tx, ++ eth.h_dest, eth.h_source); + } + + return true; +@@ -4244,8 +4253,15 @@ void __ieee80211_subif_start_xmit(struct return; } @@ -835,13 +847,14 @@ Signed-off-by: Felix Fietkau rcu_read_lock(); + if (ieee80211_vif_is_mesh(&sdata->vif) && ++ ieee80211_hw_check(&local->hw, SUPPORT_FAST_XMIT) && + ieee80211_mesh_xmit_fast(sdata, skb, ctrl_flags)) + goto out; + if (ieee80211_lookup_ra_sta(sdata, skb, &sta)) goto out_free; -@@ -4255,8 +4420,6 @@ void __ieee80211_subif_start_xmit(struct +@@ -4255,8 +4271,6 @@ void __ieee80211_subif_start_xmit(struct skb_set_queue_mapping(skb, ieee80211_select_queue(sdata, sta, skb)); ieee80211_aggr_check(sdata, sta, skb); diff --git a/package/kernel/mac80211/patches/subsys/320-wifi-mac80211-use-mesh-header-cache-to-speed-up-mesh.patch b/package/kernel/mac80211/patches/subsys/320-wifi-mac80211-use-mesh-header-cache-to-speed-up-mesh.patch index e0d4e60ed74..3b0bae67a5f 100644 --- a/package/kernel/mac80211/patches/subsys/320-wifi-mac80211-use-mesh-header-cache-to-speed-up-mesh.patch +++ b/package/kernel/mac80211/patches/subsys/320-wifi-mac80211-use-mesh-header-cache-to-speed-up-mesh.patch @@ -3,40 +3,92 @@ Date: Thu, 16 Feb 2023 11:07:30 +0100 Subject: [PATCH] wifi: mac80211: use mesh header cache to speed up mesh forwarding -Use it to look up the next hop address + sta pointer + key and call -__ieee80211_mesh_xmit_fast to queue the tx frame. - Significantly reduces mesh forwarding path CPU usage and enables the -use of iTXQ. +direct use of iTXQ. Signed-off-by: Felix Fietkau --- --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c -@@ -2731,6 +2731,7 @@ ieee80211_rx_mesh_data(struct ieee80211_ - struct ieee80211_hdr hdr = { - .frame_control = cpu_to_le16(fc) - }; -+ struct mhdr_cache_entry *entry = NULL; - struct ieee80211_hdr *fwd_hdr; - struct ieee80211s_hdr *mesh_hdr; - struct ieee80211_tx_info *info; -@@ -2788,7 +2789,12 @@ ieee80211_rx_mesh_data(struct ieee80211_ - return RX_DROP_MONITOR; +@@ -2720,6 +2720,65 @@ ieee80211_deliver_skb(struct ieee80211_r } + } -- if (mesh_hdr->flags & MESH_FLAGS_AE) { ++#ifdef CPTCFG_MAC80211_MESH ++static bool ++ieee80211_rx_mesh_fast_forward(struct ieee80211_sub_if_data *sdata, ++ struct sk_buff *skb, int hdrlen) ++{ ++ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; ++ struct ieee80211_mesh_fast_tx *entry = NULL; ++ struct ieee80211s_hdr *mesh_hdr; ++ struct tid_ampdu_tx *tid_tx; ++ struct sta_info *sta; ++ struct ethhdr eth; ++ u8 tid; ++ ++ mesh_hdr = (struct ieee80211s_hdr *)(skb->data + sizeof(eth)); + if ((mesh_hdr->flags & MESH_FLAGS_AE) == MESH_FLAGS_AE_A5_A6) -+ entry = mesh_get_cached_hdr(sdata, mesh_hdr->eaddr1); ++ entry = mesh_fast_tx_get(sdata, mesh_hdr->eaddr1); + else if (!(mesh_hdr->flags & MESH_FLAGS_AE)) -+ entry = mesh_get_cached_hdr(sdata, eth->h_dest); ++ entry = mesh_fast_tx_get(sdata, skb->data); ++ if (!entry) ++ return false; ++ ++ sta = rcu_dereference(entry->mpath->next_hop); ++ if (!sta) ++ return false; ++ ++ if (skb_linearize(skb)) ++ return false; ++ ++ tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; ++ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); ++ if (tid_tx) { ++ if (!test_bit(HT_AGG_STATE_OPERATIONAL, &tid_tx->state)) ++ return false; ++ ++ if (tid_tx->timeout) ++ tid_tx->last_tx = jiffies; ++ } ++ ++ ieee80211_aggr_check(sdata, sta, skb); ++ ++ if (ieee80211_get_8023_tunnel_proto(skb->data + hdrlen, ++ &skb->protocol)) ++ hdrlen += ETH_ALEN; ++ else ++ skb->protocol = htons(skb->len - hdrlen); ++ skb_set_network_header(skb, hdrlen + 2); ++ ++ skb->dev = sdata->dev; ++ memcpy(ð, skb->data, ETH_HLEN - 2); ++ skb_pull(skb, sizeof(eth)); ++ __ieee80211_xmit_fast(sdata, sta, &entry->fast_tx, skb, tid_tx, ++ eth.h_dest, eth.h_source); ++ IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_unicast); ++ IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames); + -+ if (!entry && (mesh_hdr->flags & MESH_FLAGS_AE)) { - struct mesh_path *mppath; - char *proxied_addr; - bool update = false; -@@ -2862,11 +2868,23 @@ ieee80211_rx_mesh_data(struct ieee80211_ ++ return true; ++} ++#endif ++ + static ieee80211_rx_result + ieee80211_rx_mesh_data(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, + struct sk_buff *skb) +@@ -2824,6 +2883,10 @@ ieee80211_rx_mesh_data(struct ieee80211_ + + skb_set_queue_mapping(skb, ieee802_1d_to_ac[skb->priority]); + ++ if (!multicast && ++ ieee80211_rx_mesh_fast_forward(sdata, skb, mesh_hdrlen)) ++ return RX_QUEUED; ++ + ieee80211_fill_mesh_addresses(&hdr, &hdr.frame_control, + eth->h_dest, eth->h_source); + hdrlen = ieee80211_hdrlen(hdr.frame_control); +@@ -2862,6 +2925,7 @@ ieee80211_rx_mesh_data(struct ieee80211_ info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; info->control.vif = &sdata->vif; info->control.jiffies = jiffies; @@ -44,23 +96,7 @@ Signed-off-by: Felix Fietkau if (multicast) { IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_mcast); memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); - /* update power mode indication when forwarding */ - ieee80211_mps_set_frame_flags(sdata, NULL, fwd_hdr); -+ } else if (entry) { -+ struct ieee80211_hdr *ehdr = (struct ieee80211_hdr *)entry->hdr; -+ -+ ether_addr_copy(fwd_hdr->addr1, ehdr->addr1); -+ ether_addr_copy(fwd_hdr->addr2, sdata->vif.addr); -+ IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_unicast); -+ IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames); -+ qos[0] = fwd_skb->priority; -+ qos[1] = ieee80211_get_qos_ctl(ehdr)[1]; -+ __ieee80211_mesh_xmit_fast(sdata, entry, fwd_skb); -+ return RX_QUEUED; - } else if (!mesh_nexthop_lookup(sdata, fwd_skb)) { - /* mesh power mode flags updated in mesh_nexthop_lookup */ - IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_unicast); -@@ -2883,7 +2901,6 @@ ieee80211_rx_mesh_data(struct ieee80211_ +@@ -2883,7 +2947,6 @@ ieee80211_rx_mesh_data(struct ieee80211_ } IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames); @@ -68,3 +104,29 @@ Signed-off-by: Felix Fietkau ieee80211_add_pending_skb(local, fwd_skb); rx_accept: +--- a/net/mac80211/ieee80211_i.h ++++ b/net/mac80211/ieee80211_i.h +@@ -2018,6 +2018,8 @@ void __ieee80211_xmit_fast(struct ieee80 + struct ieee80211_fast_tx *fast_tx, + struct sk_buff *skb, bool ampdu, + const u8 *da, const u8 *sa); ++void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta, struct sk_buff *skb); + + /* HT */ + void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, +--- a/net/mac80211/tx.c ++++ b/net/mac80211/tx.c +@@ -1191,10 +1191,8 @@ static bool ieee80211_tx_prep_agg(struct + return queued; + } + +-static void +-ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, +- struct sta_info *sta, +- struct sk_buff *skb) ++void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata, ++ struct sta_info *sta, struct sk_buff *skb) + { + struct rate_control_ref *ref = sdata->local->rate_ctrl; + u16 tid; diff --git a/package/kernel/mac80211/patches/subsys/321-mac80211-fix-mesh-forwarding.patch b/package/kernel/mac80211/patches/subsys/321-mac80211-fix-mesh-forwarding.patch index d9af8c79291..e2b268ae4c0 100644 --- a/package/kernel/mac80211/patches/subsys/321-mac80211-fix-mesh-forwarding.patch +++ b/package/kernel/mac80211/patches/subsys/321-mac80211-fix-mesh-forwarding.patch @@ -11,7 +11,7 @@ Signed-off-by: Felix Fietkau --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c -@@ -2847,6 +2847,9 @@ ieee80211_rx_mesh_data(struct ieee80211_ +@@ -2904,6 +2904,9 @@ ieee80211_rx_mesh_data(struct ieee80211_ if (skb_cow_head(fwd_skb, hdrlen - sizeof(struct ethhdr))) return RX_DROP_UNUSABLE; @@ -21,7 +21,7 @@ Signed-off-by: Felix Fietkau } fwd_hdr = skb_push(fwd_skb, hdrlen - sizeof(struct ethhdr)); -@@ -2861,7 +2864,7 @@ ieee80211_rx_mesh_data(struct ieee80211_ +@@ -2918,7 +2921,7 @@ ieee80211_rx_mesh_data(struct ieee80211_ hdrlen += ETH_ALEN; else fwd_skb->protocol = htons(fwd_skb->len - hdrlen); diff --git a/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch b/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch index 817be9e4d23..80ffb493b89 100644 --- a/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch +++ b/package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch @@ -87,7 +87,7 @@ CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h -@@ -1536,6 +1536,7 @@ struct ieee80211_local { +@@ -1535,6 +1535,7 @@ struct ieee80211_local { int dynamic_ps_forced_timeout; int user_power_level; /* in dBm, for all interfaces */