lkml.org 
[lkml]   [2017]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectPointer type of _arp in __skb_flow_dissect()
Date
Hello,

Linux 4.11-rc4 contains the following code in function
__skb_flow_dissect(), file net/core/flow_dissector.c:

const struct arphdr *arp;
struct arphdr *_arp;

arp = __skb_header_pointer(skb, nhoff, sizeof(_arp), data,
hlen, &_arp);


Here _arp and arp are both pointers to arphdr structures. In other calls
to __skb_header_pointer(), the buffer argument (_arp here) would have
been a struct instead of a pointer. What makes ARP packets different in
__skb_flow_dissect()?

Thanks,
Nicolas

PS: the code which I am curious about seems to have been introduced in
4.11-rc1 with commit 55733350e5e8 ("flow disector: ARP support")

\
 
 \ /
  Last update: 2017-03-31 20:53    [W:0.028 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site