diff options
| author | Rafał Miłecki <rafal@milecki.pl> | 2018-05-08 09:40:43 +0200 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2018-05-08 09:42:07 +0200 |
| commit | f9dcdc7fefcab5ec9b15b0f3c87dfebef37ecaa3 (patch) | |
| tree | 36fd6f2cc4324384f9af19994fb69a20d95f8daf /target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch | |
| parent | 004cc22e4ef8187dd80d5d6be5a2575453ef3699 (diff) | |
| download | upstream-f9dcdc7fefcab5ec9b15b0f3c87dfebef37ecaa3.tar.gz upstream-f9dcdc7fefcab5ec9b15b0f3c87dfebef37ecaa3.tar.bz2 upstream-f9dcdc7fefcab5ec9b15b0f3c87dfebef37ecaa3.zip | |
kernel: mark source kernel for netfilter backports
This helps keeping track on patches & adding new kernels in the future.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch')
| -rw-r--r-- | target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch b/target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch new file mode 100644 index 0000000000..2a470f77e3 --- /dev/null +++ b/target/linux/generic/backport-4.14/367-v4.18-netfilter-nf_flow_table-add-missing-condition-for-TC.patch @@ -0,0 +1,48 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 23 Mar 2018 17:15:22 +0100 +Subject: [PATCH] netfilter: nf_flow_table: add missing condition for TCP state + check + +Avoid looking at unrelated fields in UDP packets + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/netfilter/nf_flow_table_ip.c ++++ b/net/netfilter/nf_flow_table_ip.c +@@ -15,11 +15,14 @@ + #include <linux/tcp.h> + #include <linux/udp.h> + +-static int nf_flow_tcp_state_check(struct flow_offload *flow, +- struct sk_buff *skb, unsigned int thoff) ++static int nf_flow_state_check(struct flow_offload *flow, int proto, ++ struct sk_buff *skb, unsigned int thoff) + { + struct tcphdr *tcph; + ++ if (proto != IPPROTO_TCP) ++ return 0; ++ + if (!pskb_may_pull(skb, thoff + sizeof(*tcph))) + return -1; + +@@ -248,7 +251,7 @@ nf_flow_offload_ip_hook(void *priv, stru + return NF_DROP; + + thoff = ip_hdr(skb)->ihl * 4; +- if (nf_flow_tcp_state_check(flow, skb, thoff)) ++ if (nf_flow_state_check(flow, ip_hdr(skb)->protocol, skb, thoff)) + return NF_ACCEPT; + + if (flow->flags & (FLOW_OFFLOAD_SNAT | FLOW_OFFLOAD_DNAT) && +@@ -460,7 +463,8 @@ nf_flow_offload_ipv6_hook(void *priv, st + if (unlikely(nf_flow_exceeds_mtu(skb, flow->tuplehash[dir].tuple.mtu))) + return NF_ACCEPT; + +- if (nf_flow_tcp_state_check(flow, skb, sizeof(*ip6h))) ++ if (nf_flow_state_check(flow, ipv6_hdr(skb)->nexthdr, skb, ++ sizeof(*ip6h))) + return NF_ACCEPT; + + if (skb_try_make_writable(skb, sizeof(*ip6h))) |