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author | Felix Fietkau <nbd@nbd.name> | 2021-04-10 13:20:04 +0200 |
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committer | Felix Fietkau <nbd@nbd.name> | 2021-04-10 16:14:34 +0200 |
commit | f07fe36f22fcf3f3da4e0440dfc5c39516e2cb55 (patch) | |
tree | dae926ce58c604551a2e1ac09834cae4c222ef30 /target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch | |
parent | 012a9aa00b3e193c93600ac707dfb5bfb1bd4609 (diff) | |
download | upstream-f07fe36f22fcf3f3da4e0440dfc5c39516e2cb55.tar.gz upstream-f07fe36f22fcf3f3da4e0440dfc5c39516e2cb55.tar.bz2 upstream-f07fe36f22fcf3f3da4e0440dfc5c39516e2cb55.zip |
kernel: update flow offload patches to upstream version
Move patches to backport-5.10, since the series was accepted upstream
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch')
-rw-r--r-- | target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch b/target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch deleted file mode 100644 index ada14e6c7a..0000000000 --- a/target/linux/generic/pending-5.10/640-06-netfilter-flowtable-use-dev_fill_forward_path-to-obt.patch +++ /dev/null @@ -1,344 +0,0 @@ -From: Pablo Neira Ayuso <pablo@netfilter.org> -Date: Thu, 4 Mar 2021 03:26:35 +0100 -Subject: [PATCH] netfilter: flowtable: use dev_fill_forward_path() to - obtain egress device - -The egress device in the tuple is obtained from route. Use -dev_fill_forward_path() instead to provide the real egress device for -this flow whenever this is available. - -The new FLOW_OFFLOAD_XMIT_DIRECT type uses dev_queue_xmit() to transmit -ethernet frames. Cache the source and destination hardware address to -use dev_queue_xmit() to transfer packets. - -The FLOW_OFFLOAD_XMIT_DIRECT replaces FLOW_OFFLOAD_XMIT_NEIGH if -dev_fill_forward_path() finds a direct transmit path. - -In case of topology updates, if peer is moved to different bridge port, -the connection will time out, reconnect will result in a new entry with -the correct path. Snooping fdb updates would allow for cleaning up stale -flowtable entries. - -Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> ---- - ---- a/include/net/netfilter/nf_flow_table.h -+++ b/include/net/netfilter/nf_flow_table.h -@@ -92,6 +92,7 @@ enum flow_offload_tuple_dir { - enum flow_offload_xmit_type { - FLOW_OFFLOAD_XMIT_NEIGH = 0, - FLOW_OFFLOAD_XMIT_XFRM, -+ FLOW_OFFLOAD_XMIT_DIRECT, - }; - - struct flow_offload_tuple { -@@ -120,8 +121,14 @@ struct flow_offload_tuple { - xmit_type:2; - - u16 mtu; -- -- struct dst_entry *dst_cache; -+ union { -+ struct dst_entry *dst_cache; -+ struct { -+ u32 ifidx; -+ u8 h_source[ETH_ALEN]; -+ u8 h_dest[ETH_ALEN]; -+ } out; -+ }; - }; - - struct flow_offload_tuple_rhash { -@@ -168,6 +175,11 @@ struct nf_flow_route { - struct { - u32 ifindex; - } in; -+ struct { -+ u32 ifindex; -+ u8 h_source[ETH_ALEN]; -+ u8 h_dest[ETH_ALEN]; -+ } out; - enum flow_offload_xmit_type xmit_type; - } tuple[FLOW_OFFLOAD_DIR_MAX]; - }; ---- a/net/netfilter/nf_flow_table_core.c -+++ b/net/netfilter/nf_flow_table_core.c -@@ -81,9 +81,6 @@ static int flow_offload_fill_route(struc - struct flow_offload_tuple *flow_tuple = &flow->tuplehash[dir].tuple; - struct dst_entry *dst = route->tuple[dir].dst; - -- if (!dst_hold_safe(route->tuple[dir].dst)) -- return -1; -- - switch (flow_tuple->l3proto) { - case NFPROTO_IPV4: - flow_tuple->mtu = ip_dst_mtu_maybe_forward(dst, true); -@@ -94,12 +91,36 @@ static int flow_offload_fill_route(struc - } - - flow_tuple->iifidx = route->tuple[dir].in.ifindex; -+ -+ switch (route->tuple[dir].xmit_type) { -+ case FLOW_OFFLOAD_XMIT_DIRECT: -+ memcpy(flow_tuple->out.h_dest, route->tuple[dir].out.h_dest, -+ ETH_ALEN); -+ memcpy(flow_tuple->out.h_source, route->tuple[dir].out.h_source, -+ ETH_ALEN); -+ flow_tuple->out.ifidx = route->tuple[dir].out.ifindex; -+ break; -+ case FLOW_OFFLOAD_XMIT_XFRM: -+ case FLOW_OFFLOAD_XMIT_NEIGH: -+ if (!dst_hold_safe(route->tuple[dir].dst)) -+ return -1; -+ -+ flow_tuple->dst_cache = dst; -+ break; -+ } - flow_tuple->xmit_type = route->tuple[dir].xmit_type; -- flow_tuple->dst_cache = dst; - - return 0; - } - -+static void nft_flow_dst_release(struct flow_offload *flow, -+ enum flow_offload_tuple_dir dir) -+{ -+ if (flow->tuplehash[dir].tuple.xmit_type == FLOW_OFFLOAD_XMIT_NEIGH || -+ flow->tuplehash[dir].tuple.xmit_type == FLOW_OFFLOAD_XMIT_XFRM) -+ dst_release(flow->tuplehash[dir].tuple.dst_cache); -+} -+ - int flow_offload_route_init(struct flow_offload *flow, - const struct nf_flow_route *route) - { -@@ -118,7 +139,7 @@ int flow_offload_route_init(struct flow_ - return 0; - - err_route_reply: -- dst_release(route->tuple[FLOW_OFFLOAD_DIR_ORIGINAL].dst); -+ nft_flow_dst_release(flow, FLOW_OFFLOAD_DIR_ORIGINAL); - - return err; - } -@@ -169,8 +190,8 @@ static void flow_offload_fixup_ct(struct - - static void flow_offload_route_release(struct flow_offload *flow) - { -- dst_release(flow->tuplehash[FLOW_OFFLOAD_DIR_ORIGINAL].tuple.dst_cache); -- dst_release(flow->tuplehash[FLOW_OFFLOAD_DIR_REPLY].tuple.dst_cache); -+ nft_flow_dst_release(flow, FLOW_OFFLOAD_DIR_ORIGINAL); -+ nft_flow_dst_release(flow, FLOW_OFFLOAD_DIR_REPLY); - } - - void flow_offload_free(struct flow_offload *flow) ---- a/net/netfilter/nf_flow_table_ip.c -+++ b/net/netfilter/nf_flow_table_ip.c -@@ -248,6 +248,24 @@ static unsigned int nf_flow_xmit_xfrm(st - return NF_STOLEN; - } - -+static unsigned int nf_flow_queue_xmit(struct net *net, struct sk_buff *skb, -+ const struct flow_offload_tuple_rhash *tuplehash, -+ unsigned short type) -+{ -+ struct net_device *outdev; -+ -+ outdev = dev_get_by_index_rcu(net, tuplehash->tuple.out.ifidx); -+ if (!outdev) -+ return NF_DROP; -+ -+ skb->dev = outdev; -+ dev_hard_header(skb, skb->dev, type, tuplehash->tuple.out.h_dest, -+ tuplehash->tuple.out.h_source, skb->len); -+ dev_queue_xmit(skb); -+ -+ return NF_STOLEN; -+} -+ - unsigned int - nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb, - const struct nf_hook_state *state) -@@ -262,6 +280,7 @@ nf_flow_offload_ip_hook(void *priv, stru - unsigned int thoff; - struct iphdr *iph; - __be32 nexthop; -+ int ret; - - if (skb->protocol != htons(ETH_P_IP)) - return NF_ACCEPT; -@@ -303,22 +322,32 @@ nf_flow_offload_ip_hook(void *priv, stru - if (flow_table->flags & NF_FLOWTABLE_COUNTER) - nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len); - -- rt = (struct rtable *)tuplehash->tuple.dst_cache; -- - if (unlikely(tuplehash->tuple.xmit_type == FLOW_OFFLOAD_XMIT_XFRM)) { -+ rt = (struct rtable *)tuplehash->tuple.dst_cache; - memset(skb->cb, 0, sizeof(struct inet_skb_parm)); - IPCB(skb)->iif = skb->dev->ifindex; - IPCB(skb)->flags = IPSKB_FORWARDED; - return nf_flow_xmit_xfrm(skb, state, &rt->dst); - } - -- outdev = rt->dst.dev; -- skb->dev = outdev; -- nexthop = rt_nexthop(rt, flow->tuplehash[!dir].tuple.src_v4.s_addr); -- skb_dst_set_noref(skb, &rt->dst); -- neigh_xmit(NEIGH_ARP_TABLE, outdev, &nexthop, skb); -+ switch (tuplehash->tuple.xmit_type) { -+ case FLOW_OFFLOAD_XMIT_NEIGH: -+ rt = (struct rtable *)tuplehash->tuple.dst_cache; -+ outdev = rt->dst.dev; -+ skb->dev = outdev; -+ nexthop = rt_nexthop(rt, flow->tuplehash[!dir].tuple.src_v4.s_addr); -+ skb_dst_set_noref(skb, &rt->dst); -+ neigh_xmit(NEIGH_ARP_TABLE, outdev, &nexthop, skb); -+ ret = NF_STOLEN; -+ break; -+ case FLOW_OFFLOAD_XMIT_DIRECT: -+ ret = nf_flow_queue_xmit(state->net, skb, tuplehash, ETH_P_IP); -+ if (ret == NF_DROP) -+ flow_offload_teardown(flow); -+ break; -+ } - -- return NF_STOLEN; -+ return ret; - } - EXPORT_SYMBOL_GPL(nf_flow_offload_ip_hook); - -@@ -504,6 +533,7 @@ nf_flow_offload_ipv6_hook(void *priv, st - struct net_device *outdev; - struct ipv6hdr *ip6h; - struct rt6_info *rt; -+ int ret; - - if (skb->protocol != htons(ETH_P_IPV6)) - return NF_ACCEPT; -@@ -545,21 +575,31 @@ nf_flow_offload_ipv6_hook(void *priv, st - if (flow_table->flags & NF_FLOWTABLE_COUNTER) - nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len); - -- rt = (struct rt6_info *)tuplehash->tuple.dst_cache; -- - if (unlikely(tuplehash->tuple.xmit_type == FLOW_OFFLOAD_XMIT_XFRM)) { -+ rt = (struct rt6_info *)tuplehash->tuple.dst_cache; - memset(skb->cb, 0, sizeof(struct inet6_skb_parm)); - IP6CB(skb)->iif = skb->dev->ifindex; - IP6CB(skb)->flags = IP6SKB_FORWARDED; - return nf_flow_xmit_xfrm(skb, state, &rt->dst); - } - -- outdev = rt->dst.dev; -- skb->dev = outdev; -- nexthop = rt6_nexthop(rt, &flow->tuplehash[!dir].tuple.src_v6); -- skb_dst_set_noref(skb, &rt->dst); -- neigh_xmit(NEIGH_ND_TABLE, outdev, nexthop, skb); -+ switch (tuplehash->tuple.xmit_type) { -+ case FLOW_OFFLOAD_XMIT_NEIGH: -+ rt = (struct rt6_info *)tuplehash->tuple.dst_cache; -+ outdev = rt->dst.dev; -+ skb->dev = outdev; -+ nexthop = rt6_nexthop(rt, &flow->tuplehash[!dir].tuple.src_v6); -+ skb_dst_set_noref(skb, &rt->dst); -+ neigh_xmit(NEIGH_ND_TABLE, outdev, nexthop, skb); -+ ret = NF_STOLEN; -+ break; -+ case FLOW_OFFLOAD_XMIT_DIRECT: -+ ret = nf_flow_queue_xmit(state->net, skb, tuplehash, ETH_P_IPV6); -+ if (ret == NF_DROP) -+ flow_offload_teardown(flow); -+ break; -+ } - -- return NF_STOLEN; -+ return ret; - } - EXPORT_SYMBOL_GPL(nf_flow_offload_ipv6_hook); ---- a/net/netfilter/nft_flow_offload.c -+++ b/net/netfilter/nft_flow_offload.c -@@ -39,12 +39,11 @@ static void nft_default_forward_path(str - static int nft_dev_fill_forward_path(const struct nf_flow_route *route, - const struct dst_entry *dst_cache, - const struct nf_conn *ct, -- enum ip_conntrack_dir dir, -+ enum ip_conntrack_dir dir, u8 *ha, - struct net_device_path_stack *stack) - { - const void *daddr = &ct->tuplehash[!dir].tuple.src.u3; - struct net_device *dev = dst_cache->dev; -- unsigned char ha[ETH_ALEN]; - struct neighbour *n; - u8 nud_state; - -@@ -66,27 +65,43 @@ static int nft_dev_fill_forward_path(con - - struct nft_forward_info { - const struct net_device *indev; -+ const struct net_device *outdev; -+ u8 h_source[ETH_ALEN]; -+ u8 h_dest[ETH_ALEN]; -+ enum flow_offload_xmit_type xmit_type; - }; - - static void nft_dev_path_info(const struct net_device_path_stack *stack, -- struct nft_forward_info *info) -+ struct nft_forward_info *info, -+ unsigned char *ha) - { - const struct net_device_path *path; - int i; - -+ memcpy(info->h_dest, ha, ETH_ALEN); -+ - for (i = 0; i < stack->num_paths; i++) { - path = &stack->path[i]; - switch (path->type) { - case DEV_PATH_ETHERNET: - info->indev = path->dev; -+ if (is_zero_ether_addr(info->h_source)) -+ memcpy(info->h_source, path->dev->dev_addr, ETH_ALEN); - break; -- case DEV_PATH_VLAN: - case DEV_PATH_BRIDGE: -+ if (is_zero_ether_addr(info->h_source)) -+ memcpy(info->h_source, path->dev->dev_addr, ETH_ALEN); -+ -+ info->xmit_type = FLOW_OFFLOAD_XMIT_DIRECT; -+ break; -+ case DEV_PATH_VLAN: - default: - info->indev = NULL; - break; - } - } -+ if (!info->outdev) -+ info->outdev = info->indev; - } - - static bool nft_flowtable_find_dev(const struct net_device *dev, -@@ -114,14 +129,22 @@ static void nft_dev_forward_path(struct - const struct dst_entry *dst = route->tuple[dir].dst; - struct net_device_path_stack stack; - struct nft_forward_info info = {}; -+ unsigned char ha[ETH_ALEN]; - -- if (nft_dev_fill_forward_path(route, dst, ct, dir, &stack) >= 0) -- nft_dev_path_info(&stack, &info); -+ if (nft_dev_fill_forward_path(route, dst, ct, dir, ha, &stack) >= 0) -+ nft_dev_path_info(&stack, &info, ha); - - if (!info.indev || !nft_flowtable_find_dev(info.indev, ft)) - return; - - route->tuple[!dir].in.ifindex = info.indev->ifindex; -+ -+ if (info.xmit_type == FLOW_OFFLOAD_XMIT_DIRECT) { -+ memcpy(route->tuple[dir].out.h_source, info.h_source, ETH_ALEN); -+ memcpy(route->tuple[dir].out.h_dest, info.h_dest, ETH_ALEN); -+ route->tuple[dir].out.ifindex = info.outdev->ifindex; -+ route->tuple[dir].xmit_type = info.xmit_type; -+ } - } - - static int nft_flow_route(const struct nft_pktinfo *pkt, |