函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\net\udp.h Create Date:2022-07-27 20:45:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：udp_csum_pull_header

函数原型：static inline void udp_csum_pull_header(struct sk_buff *skb)

返回类型：void

参数：

类型参数名称
struct sk_buff *skb
159  如果非csum_valid且ip_summed恒等于Don't change this without changing skb_csum_unnecessary! 则csum等于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
162  skb_pull_rcsum(skb, sizeof(structudphdr))
163  cscov减等于sizeof(structudphdr)