skb_partial_csum_set(9)
NAME
skb_partial_csum_set - set up and verify partial csum values for packet
SYNOPSIS
bool skb_partial_csum_set(struct sk_buff * skb, u16 start, u16 off);
ARGUMENTS
- skb
- the skb to set
- start
- the number of bytes after skb->data to start checksumming.
- off
- the offset from start to place the checksum.
DESCRIPTION
For untrusted partially-checksummed packets, we need to make sure the
values for skb->csum_start and skb->csum_offset are valid so we donīt
oops.
This function checks and sets those values and skb->ip_summed: if this
returns false you should drop the packet.