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| author | Yuki Taguchi <tagyounit@gmail.com> | 2020-01-20 07:48:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-29 18:43:14 +0300 |
| commit | d3c0a8be8bbbf3f67ccd88909993b802886b6b18 (patch) | |
| tree | d5869736fe91ec80128d4723982580b5afd127e7 /net | |
| parent | d3b5ecceea7dc3ce36c5306b3e45bd75cd192291 (diff) | |
| download | linux-d3c0a8be8bbbf3f67ccd88909993b802886b6b18.tar.xz | |
ipv6: sr: remove SKB_GSO_IPXIP6 on End.D* actions
[ Upstream commit 62ebaeaedee7591c257543d040677a60e35c7aec ]
After LRO/GRO is applied, SRv6 encapsulated packets have
SKB_GSO_IPXIP6 feature flag, and this flag must be removed right after
decapulation procedure.
Currently, SKB_GSO_IPXIP6 flag is not removed on End.D* actions, which
creates inconsistent packet state, that is, a normal TCP/IP packets
have the SKB_GSO_IPXIP6 flag. This behavior can cause unexpected
fallback to GSO on routing to netdevices that do not support
SKB_GSO_IPXIP6. For example, on inter-VRF forwarding, decapsulated
packets separated into small packets by GSO because VRF devices do not
support TSO for packets with SKB_GSO_IPXIP6 flag, and this degrades
forwarding performance.
This patch removes encapsulation related GSO flags from the skb right
after the End.D* action is applied.
Fixes: d7a669dd2f8b ("ipv6: sr: add helper functions for seg6local")
Signed-off-by: Yuki Taguchi <tagyounit@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/seg6_local.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c index 60325dbfe88b..607709a8847c 100644 --- a/net/ipv6/seg6_local.c +++ b/net/ipv6/seg6_local.c @@ -28,6 +28,7 @@ #include <net/addrconf.h> #include <net/ip6_route.h> #include <net/dst_cache.h> +#include <net/ip_tunnels.h> #ifdef CONFIG_IPV6_SEG6_HMAC #include <net/seg6_hmac.h> #endif @@ -135,7 +136,8 @@ static bool decap_and_validate(struct sk_buff *skb, int proto) skb_reset_network_header(skb); skb_reset_transport_header(skb); - skb->encapsulation = 0; + if (iptunnel_pull_offloads(skb)) + return false; return true; } |