diff options
| author | Leon Romanovsky <leonro@nvidia.com> | 2025-02-19 15:51:01 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2025-02-21 08:08:15 +0100 |
| commit | ca70c104e1511c8de734ab8863a40f7c8e21a948 (patch) | |
| tree | 4de3fc131e554e02bd7f0cb97e039910cafff991 /net/xfrm/xfrm_device.c | |
| parent | cc18f482e8b60a2bcf2d7d57b48740bd0837fc04 (diff) | |
xfrm: check for PMTU in tunnel mode for packet offload
In tunnel mode, for the packet offload, there were no PMTU signaling
to the upper level about need to fragment the packet. As a solution,
call to already existing xfrm[4|6]_tunnel_check_size() to perform that.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_device.c')
| -rw-r--r-- | net/xfrm/xfrm_device.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index f9d985ef30f2..d62f76161d83 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -418,12 +418,12 @@ bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) struct dst_entry *dst = skb_dst(skb); struct xfrm_dst *xdst = (struct xfrm_dst *)dst; struct net_device *dev = x->xso.dev; + bool check_tunnel_size; if (x->xso.type == XFRM_DEV_OFFLOAD_UNSPECIFIED) return false; - if (x->xso.type == XFRM_DEV_OFFLOAD_PACKET || - ((dev == xfrm_dst_path(dst)->dev) && !xdst->child->xfrm)) { + if ((dev == xfrm_dst_path(dst)->dev) && !xdst->child->xfrm) { mtu = xfrm_state_mtu(x, xdst->child_mtu_cached); if (skb->len <= mtu) goto ok; @@ -435,16 +435,22 @@ bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) return false; ok: + check_tunnel_size = x->xso.type == XFRM_DEV_OFFLOAD_PACKET && + x->props.mode == XFRM_MODE_TUNNEL; switch (x->props.family) { case AF_INET: /* Check for IPv4 options */ if (ip_hdr(skb)->ihl != 5) return false; + if (check_tunnel_size && xfrm4_tunnel_check_size(skb)) + return false; break; case AF_INET6: /* Check for IPv6 extensions */ if (ipv6_ext_hdr(ipv6_hdr(skb)->nexthdr)) return false; + if (check_tunnel_size && xfrm6_tunnel_check_size(skb)) + return false; break; default: break; |