From a32b0ec4cf435b3c5b3998f70ebd12a72cc58df5 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Mon, 6 Apr 2020 07:04:38 +0200 Subject: [PATCH] generic: fix flow table hw offload Make the driver work with recent upstream changes. Fixes: FS#2632 Ref: https://github.com/openwrt/openwrt/pull/2815 Signed-off-by: John Crispin (cherry picked from commit 6786dc26a205da55ec2d9771693cdfb99e756e59) --- ...w_table-support-hw-offload-through-v.patch | 33 ++++++++++--------- 1 file changed, 18 insertions(+), 15 deletions(-) diff --git a/target/linux/generic/pending-4.14/641-netfilter-nf_flow_table-support-hw-offload-through-v.patch b/target/linux/generic/pending-4.14/641-netfilter-nf_flow_table-support-hw-offload-through-v.patch index 9311725346..e1b13a1ad4 100644 --- a/target/linux/generic/pending-4.14/641-netfilter-nf_flow_table-support-hw-offload-through-v.patch +++ b/target/linux/generic/pending-4.14/641-netfilter-nf_flow_table-support-hw-offload-through-v.patch @@ -79,7 +79,7 @@ Signed-off-by: Felix Fietkau struct nf_flow_route { --- a/net/netfilter/nf_flow_table_hw.c +++ b/net/netfilter/nf_flow_table_hw.c -@@ -19,48 +19,75 @@ struct flow_offload_hw { +@@ -19,48 +19,77 @@ struct flow_offload_hw { enum flow_offload_type type; struct flow_offload *flow; struct nf_conn *ct; @@ -92,6 +92,7 @@ Signed-off-by: Felix Fietkau -static int do_flow_offload_hw(struct net *net, struct flow_offload *flow, - int type) +static void flow_offload_check_ethernet(struct flow_offload_tuple *tuple, ++ struct dst_entry *dst, + struct flow_offload_hw_path *path) { - struct net_device *indev; @@ -112,7 +113,7 @@ Signed-off-by: Felix Fietkau - dev_put(indev); + memcpy(path->eth_src, path->dev->dev_addr, ETH_ALEN); -+ n = dst_neigh_lookup(tuple->dst_cache, &tuple->src_v4); ++ n = dst_neigh_lookup(dst, &tuple->src_v4); + if (!n) + return; @@ -125,6 +126,7 @@ Signed-off-by: Felix Fietkau -static void flow_offload_hw_work_add(struct flow_offload_hw *offload) +static int flow_offload_check_path(struct net *net, + struct flow_offload_tuple *tuple, ++ struct dst_entry *dst, + struct flow_offload_hw_path *path) { - struct net *net; @@ -138,7 +140,7 @@ Signed-off-by: Felix Fietkau + return -ENOENT; + + path->dev = dev; -+ flow_offload_check_ethernet(tuple, path); ++ flow_offload_check_ethernet(tuple, dst, path); - net = read_pnet(&offload->flow_hw_net); - ret = do_flow_offload_hw(net, offload->flow, FLOW_OFFLOAD_ADD); @@ -166,11 +168,11 @@ Signed-off-by: Felix Fietkau + /* restore devices in case the driver mangled them */ + offload->src.dev = src_dev; + offload->dest.dev = dest_dev; -+ -+ return ret; -+} - do_flow_offload_hw(net, offload->flow, FLOW_OFFLOAD_DEL); ++ return ret; ++} ++ +static void flow_offload_hw_free(struct flow_offload_hw *offload) +{ + dev_put(offload->src.dev); @@ -182,7 +184,7 @@ Signed-off-by: Felix Fietkau } static void flow_offload_hw_work(struct work_struct *work) -@@ -73,18 +100,22 @@ static void flow_offload_hw_work(struct +@@ -73,18 +102,22 @@ static void flow_offload_hw_work(struct spin_unlock_bh(&flow_offload_hw_pending_list_lock); list_for_each_entry_safe(offload, next, &hw_offload_pending, list) { @@ -211,7 +213,7 @@ Signed-off-by: Felix Fietkau } } -@@ -97,20 +128,55 @@ static void flow_offload_queue_work(stru +@@ -97,20 +130,56 @@ static void flow_offload_queue_work(stru schedule_work(&nf_flow_offload_hw_work); } @@ -220,17 +222,18 @@ Signed-off-by: Felix Fietkau +{ + struct flow_offload_hw_path src = {}; + struct flow_offload_hw_path dest = {}; -+ struct flow_offload_tuple *tuple; ++ struct flow_offload_tuple *tuple_s, *tuple_d; + struct flow_offload_hw *offload = NULL; + + rcu_read_lock_bh(); + -+ tuple = &flow->tuplehash[FLOW_OFFLOAD_DIR_ORIGINAL].tuple; -+ if (flow_offload_check_path(net, tuple, &src)) ++ tuple_s = &flow->tuplehash[FLOW_OFFLOAD_DIR_ORIGINAL].tuple; ++ tuple_d = &flow->tuplehash[FLOW_OFFLOAD_DIR_REPLY].tuple; ++ ++ if (flow_offload_check_path(net, tuple_s, tuple_d->dst_cache, &src)) + goto out; + -+ tuple = &flow->tuplehash[FLOW_OFFLOAD_DIR_REPLY].tuple; -+ if (flow_offload_check_path(net, tuple, &dest)) ++ if (flow_offload_check_path(net, tuple_d, tuple_s->dst_cache, &dest)) + goto out; + + if (!src.dev->netdev_ops->ndo_flow_offload) @@ -270,7 +273,7 @@ Signed-off-by: Felix Fietkau flow_offload_queue_work(offload); } -@@ -119,14 +185,11 @@ static void flow_offload_hw_del(struct n +@@ -119,14 +188,11 @@ static void flow_offload_hw_del(struct n { struct flow_offload_hw *offload; @@ -286,7 +289,7 @@ Signed-off-by: Felix Fietkau flow_offload_queue_work(offload); } -@@ -153,12 +216,8 @@ static void __exit nf_flow_table_hw_modu +@@ -153,12 +219,8 @@ static void __exit nf_flow_table_hw_modu nf_flow_table_hw_unregister(&flow_offload_hw); cancel_work_sync(&nf_flow_offload_hw_work); -- 2.25.1