diff mbox series

[6/6] xfrm: fix bug with DSCP copy to v6 from v4 tunnel

Message ID 20230208114322.266510-7-steffen.klassert@secunet.com (mailing list archive)
State Accepted
Commit 6028da3f125fec34425dbd5fec18e85d372b2af6
Delegated to: Netdev Maintainers
Headers show
Series [1/6] Fix XFRM-I support for nested ESP tunnels | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Pull request is its own cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 5 this patch: 5
netdev/cc_maintainers warning 2 maintainers not CCed: edumazet@google.com pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 1 this patch: 1
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 5 this patch: 5
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Steffen Klassert Feb. 8, 2023, 11:43 a.m. UTC 
From: Christian Hopps <chopps@chopps.org>

When copying the DSCP bits for decap-dscp into IPv6 don't assume the
outer encap is always IPv6. Instead, as with the inner IPv4 case, copy
the DSCP bits from the correctly saved "tos" value in the control block.

Fixes: 227620e29509 ("[IPSEC]: Separate inner/outer mode processing on input")
Signed-off-by: Christian Hopps <chopps@chopps.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
 net/xfrm/xfrm_input.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index c06e54a10540..436d29640ac2 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -279,8 +279,7 @@  static int xfrm6_remove_tunnel_encap(struct xfrm_state *x, struct sk_buff *skb)
 		goto out;
 
 	if (x->props.flags & XFRM_STATE_DECAP_DSCP)
-		ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
-			       ipipv6_hdr(skb));
+		ipv6_copy_dscp(XFRM_MODE_SKB_CB(skb)->tos, ipipv6_hdr(skb));
 	if (!(x->props.flags & XFRM_STATE_NOECN))
 		ipip6_ecn_decapsulate(skb);