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ipsec-2026-01-14

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Merge tag 'ipsec-2026-01-14' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2026-01-14

1) Fix inner mode lookup in tunnel mode GSO segmentation.
   The protocol was taken from the wrong field.

2) Set ipv4 no_pmtu_disc flag only on output SAs. The
   insertation of input SAs can fail if no_pmtu_disc
   is set.

Please pull or let me know if there are problems.

ipsec-2026-01-14

* tag 'ipsec-2026-01-14' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec:
  xfrm: set ipv4 no_pmtu_disc flag only on output sa when direction is set
  xfrm: Fix inner mode lookup in tunnel mode GSO segmentation
====================

Link: https://patch.msgid.link/20260114121817.1106134-1-steffen.klassert@secunet.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni 2026-01-15 12:46:12 +01:00
commit 5ce234a8fe
3 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/ipv4/esp4_offload.c
View File

@ -122,8 +122,8 @@ static struct sk_buff *xfrm4_tunnel_gso_segment(struct xfrm_state *x,
struct sk_buff *skb,
netdev_features_t features)
{
const struct xfrm_mode *inner_mode = xfrm_ip2inner_mode(x,
XFRM_MODE_SKB_CB(skb)->protocol);
struct xfrm_offload *xo = xfrm_offload(skb);
const struct xfrm_mode *inner_mode = xfrm_ip2inner_mode(x, xo->proto);
__be16 type = inner_mode->family == AF_INET6 ? htons(ETH_P_IPV6)
: htons(ETH_P_IP);

4
net/ipv6/esp6_offload.c
View File

@ -158,8 +158,8 @@ static struct sk_buff *xfrm6_tunnel_gso_segment(struct xfrm_state *x,
struct sk_buff *skb,
netdev_features_t features)
{
const struct xfrm_mode *inner_mode = xfrm_ip2inner_mode(x,
XFRM_MODE_SKB_CB(skb)->protocol);
struct xfrm_offload *xo = xfrm_offload(skb);
const struct xfrm_mode *inner_mode = xfrm_ip2inner_mode(x, xo->proto);
__be16 type = inner_mode->family == AF_INET ? htons(ETH_P_IP)
: htons(ETH_P_IPV6);

1
net/xfrm/xfrm_state.c
View File

@ -3151,6 +3151,7 @@ int __xfrm_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack)
int err;
if (family == AF_INET &&
(!x->dir || x->dir == XFRM_SA_DIR_OUT) &&
READ_ONCE(xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc))
x->props.flags |= XFRM_STATE_NOPMTUDISC;