diff options
| author |   longguang.yue <bigclouds@163.com> | 2020-10-05 23:13:47 +0300 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2020-10-12 01:57:34 +0200 |
| commit | 073b04e76be6d5c4e22ff0599260f3bf890ac53a (patch) | |
| tree | 84a0445d3d8d4150a8e42a919a172a51ff61a7a1 /net/netfilter/ipvs/ip_vs_core.c | |
| parent | Merge branch 'Offload-tc-vlan-mangle-to-mscc_ocelot-switch' (diff) | |
| download | linux-dev-073b04e76be6d5c4e22ff0599260f3bf890ac53a.tar.xz linux-dev-073b04e76be6d5c4e22ff0599260f3bf890ac53a.zip | |
ipvs: inspect reply packets from DR/TUN real servers
Just like for MASQ, inspect the reply packets coming from DR/TUN
real servers and alter the connection's state and timeout
according to the protocol.
It's ipvs's duty to do traffic statistic if packets get hit,
no matter what mode it is.
Signed-off-by: longguang.yue <bigclouds@163.com>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_core.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index e3668a6e54e4..cc3c275934f4 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -875,7 +875,7 @@ static int handle_response_icmp(int af, struct sk_buff *skb, unsigned int verdict = NF_DROP; if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) - goto ignore_cp; + goto after_nat; /* Ensure the checksum is correct */ if (!skb_csum_unnecessary(skb) && ip_vs_checksum_complete(skb, ihl)) { @@ -901,6 +901,7 @@ static int handle_response_icmp(int af, struct sk_buff *skb, if (ip_vs_route_me_harder(cp->ipvs, af, skb, hooknum)) goto out; +after_nat: /* do the statistics and put it back */ ip_vs_out_stats(cp, skb); @@ -909,8 +910,6 @@ static int handle_response_icmp(int af, struct sk_buff *skb, ip_vs_notrack(skb); else ip_vs_update_conntrack(skb, cp, 0); - -ignore_cp: verdict = NF_ACCEPT; out: @@ -1276,6 +1275,9 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, { struct ip_vs_protocol *pp = pd->pp; + if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) + goto after_nat; + IP_VS_DBG_PKT(11, af, pp, skb, iph->off, "Outgoing packet"); if (skb_ensure_writable(skb, iph->len)) @@ -1316,6 +1318,7 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, IP_VS_DBG_PKT(10, af, pp, skb, iph->off, "After SNAT"); +after_nat: ip_vs_out_stats(cp, skb); ip_vs_set_state(cp, IP_VS_DIR_OUTPUT, skb, pd); skb->ipvs_property = 1; @@ -1412,11 +1415,8 @@ ip_vs_out(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, in cp = INDIRECT_CALL_1(pp->conn_out_get, ip_vs_conn_out_get_proto, ipvs, af, skb, &iph); - if (likely(cp)) { - if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) - goto ignore_cp; + if (likely(cp)) return handle_response(af, skb, pd, cp, &iph, hooknum); - } /* Check for real-server-started requests */ if (atomic_read(&ipvs->conn_out_counter)) { @@ -1475,14 +1475,9 @@ ip_vs_out(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, in } } -out: IP_VS_DBG_PKT(12, af, pp, skb, iph.off, "ip_vs_out: packet continues traversal as normal"); return NF_ACCEPT; - -ignore_cp: - __ip_vs_conn_put(cp); - goto out; } /* |