diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2023-10-24 12:02:03 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-10-24 12:02:04 +0200 |
| commit | cd8892c07876da0c4b50e020048a32a28596a074 (patch) | |
| tree | 806e7aac4724a7907dcdb16e650adde1508bb070 | |
| parent | 9644bc49705723bf7c69aa9bf542bb5161b91dba (diff) | |
| parent | 4530e5b8e2dad63dcad2206232dd86e4b1489b6c (diff) | |
Merge branch 'gtp-tunnel-driver-fixes'
Pablo Neira Ayuso says:
====================
GTP tunnel driver fixes
The following patchset contains two fixes for the GTP tunnel driver:
1) Incorrect GTPA_MAX definition in UAPI headers. This is updating an
existing UAPI definition but for a good reason, this is certainly
broken. Similar fixes for incorrect _MAX definition in netlink
headers were applied in the past too.
2) Fix GTP driver PMTU with GRO packets, add missing call to
skb_gso_validate_network_len() to handle GRO packets.
====================
Link: https://lore.kernel.org/r/20231022202519.659526-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/net/gtp.c | 5 | ||||
| -rw-r--r-- | include/uapi/linux/gtp.h | 2 |
2 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 144ec626230d..b22596b18ee8 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -872,8 +872,9 @@ static int gtp_build_skb_ip4(struct sk_buff *skb, struct net_device *dev, skb_dst_update_pmtu_no_confirm(skb, mtu); - if (!skb_is_gso(skb) && (iph->frag_off & htons(IP_DF)) && - mtu < ntohs(iph->tot_len)) { + if (iph->frag_off & htons(IP_DF) && + ((!skb_is_gso(skb) && skb->len > mtu) || + (skb_is_gso(skb) && !skb_gso_validate_network_len(skb, mtu)))) { netdev_dbg(dev, "packet too big, fragmentation needed\n"); icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); diff --git a/include/uapi/linux/gtp.h b/include/uapi/linux/gtp.h index 2f61298a7b77..3dcdb9e33cba 100644 --- a/include/uapi/linux/gtp.h +++ b/include/uapi/linux/gtp.h @@ -33,6 +33,6 @@ enum gtp_attrs { GTPA_PAD, __GTPA_MAX, }; -#define GTPA_MAX (__GTPA_MAX + 1) +#define GTPA_MAX (__GTPA_MAX - 1) #endif /* _UAPI_LINUX_GTP_H_ */ |