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ipvlan: use skb_ip_totlen in ipvlan_get_L3_hdr 

ipvlan devices calls netif_inherit_tso_max() to get the tso_max_size/segs
from the lower device, so when lower device supports BIG TCP, the ipvlan
devices support it too. We also should consider its iph tot_len accessing.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xin Long 2023-01-28 10:58:36 -05:00 committed by Jakub Kicinski
parent 7eb072be41
commit 50e6fb5c6e
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ipvlan/ipvlan_core.c
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@ -157,7 +157,7 @@ void *ipvlan_get_L3_hdr(struct ipvl_port *port, struct sk_buff *skb, int *type)
return NULL; return NULL;
ip4h = ip_hdr(skb); ip4h = ip_hdr(skb);
pktlen = ntohs(ip4h->tot_len); pktlen = skb_ip_totlen(skb);
if (ip4h->ihl < 5 || ip4h->version != 4) if (ip4h->ihl < 5 || ip4h->version != 4)
return NULL; return NULL;
if (skb->len < pktlen || pktlen < (ip4h->ihl * 4)) if (skb->len < pktlen || pktlen < (ip4h->ihl * 4))