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SKB_PULL_RCSUM(9) Linux Networking SKB_PULL_RCSUM(9)

NAME

skb_pull_rcsum - pull skb and update receive checksum

SYNOPSIS

unsigned char * skb_pull_rcsum(struct sk_buff * skb, unsigned int len);

ARGUMENTS

struct sk_buff * skb
buffer to update

unsigned int len

length of data pulled

DESCRIPTION

This function performs an skb_pull on the packet and updates the CHECKSUM_COMPLETE checksum. It should be used on receive path processing instead of skb_pull unless you know that the checksum difference is zero (e.g., a valid IP header) or you are setting ip_summed to CHECKSUM_NONE.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12