diff options
| author | Tom Herbert <tom@herbertland.com> | 2016-06-08 01:09:44 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-08 09:40:34 +0200 |
| commit | 707a2ca4870fcf6b5480cdfad563b940f56f0844 (patch) | |
| tree | 1f3246877173faadbb4589af7995d2224acab189 /net/ipv6/ila/ila_lwt.c | |
| parent | tcp: accept RST if SEQ matches right edge of right-most SACK block (diff) | |
| download | linux-707a2ca4870fcf6b5480cdfad563b940f56f0844.tar.xz linux-707a2ca4870fcf6b5480cdfad563b940f56f0844.zip | |
ila: Perform only one translation in forwarding path
When setting up ILA in a router we noticed that the the encapsulation
is invoked twice: once in the route input path and again upon route
output. To resolve this we add a flag set_csum_neutral for the
ila_update_ipv6_locator. If this flag is set and the checksum
neutral bit is also set we assume that checksum-neutral translation
has already been performed and take no further action. The
flag is set only in ila_output path. The flag is not set for ila_input and
ila_xlat.
Tested:
Used 3 netns to set to emulate a router and two hosts. The router
translates SIR addresses between the two destinations in other two netns.
Verified ping and netperf are functional.
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ila/ila_lwt.c')
| -rw-r--r-- | net/ipv6/ila/ila_lwt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c index 1dfb64166d7d..c8314c6b6154 100644 --- a/net/ipv6/ila/ila_lwt.c +++ b/net/ipv6/ila/ila_lwt.c @@ -26,7 +26,7 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb) if (skb->protocol != htons(ETH_P_IPV6)) goto drop; - ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate)); + ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate), true); return dst->lwtstate->orig_output(net, sk, skb); @@ -42,7 +42,7 @@ static int ila_input(struct sk_buff *skb) if (skb->protocol != htons(ETH_P_IPV6)) goto drop; - ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate)); + ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate), false); return dst->lwtstate->orig_input(skb); |