Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\net\udp.h Create Date:2022-07-28 19:15:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:dp_csum_outgoing - compute UDPv4/v6 checksum over fragments*@sk: socket we are writing to*@skb: sk_buff containing the filled-in UDP header* (checksum field must be zeroed out)

Proto:static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb)

Type:__wsum

Parameter:

TypeParameterName
struct sock *sk
struct sk_buff *skb
129  csum = mputes the checksum of a memory block at buff, length len,* and adds in "sum" (32-bit)* returns a 32-bit number suitable for feeding into itself* or csum_tcpudp_magic* this function must be called with even lengths, except* for the last fragment, which
132  csum = csum_add(csum, csum)
134  Return csum