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ipobfs_mod: apply csum mode if data_xor is not set

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bol-van
2025-08-10 09:27:18 +03:00
parent 1d8701524d
commit 7abc571140
1 changed files with 16 additions and 2 deletions
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18
ipobfs_mod/ipobfs.c
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@@ -379,6 +379,13 @@ static void modify_skb_payload(struct sk_buff *skb,int idx,bool bOutgoing)
if (csum_mode==valid) fix_transport_checksum(skb); if (csum_mode==valid) fix_transport_checksum(skb);
} }
static void fix_skb_csum(struct sk_buff *skb,int idx,bool bOutgoing)
{
t_csum csum_mode=GET_PARAM(csum,idx);
if (csum_mode==valid || (bOutgoing && csum_mode==fix)) fix_transport_checksum(skb);
}
static void modify_skb_ipp(struct sk_buff *skb,int idx) static void modify_skb_ipp(struct sk_buff *skb,int idx)
{ {
uint8_t pver,proto_old=0,proto_new=0; uint8_t pver,proto_old=0,proto_new=0;
@@ -423,8 +430,15 @@ static uint hook_ip(void *priv, struct sk_buff *skb, const struct nf_hook_state
// do data modification with original ip protocol. necessary for checksums // do data modification with original ip protocol. necessary for checksums
if (bOutgoing) if (bOutgoing)
{ {
if (GET_PARAM(data_xor,idx)) modify_skb_payload(skb,idx,bOutgoing); if (GET_PARAM(data_xor,idx))
if (GET_PARAM(ipp_xor,idx)) modify_skb_ipp(skb,idx); modify_skb_payload(skb,idx,bOutgoing);
if (GET_PARAM(ipp_xor,idx))
{
if (!GET_PARAM(data_xor,idx))
// if we make it not tcp/udp, offload will not calc csum. must take care of this.
fix_skb_csum(skb,idx,bOutgoing);
modify_skb_ipp(skb,idx);
}
} }
else else
{ {