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(parent: b8fed59) | patch
icmp: add helpers to recognize ICMP error packets
authorMatteo Croce <mcroce@redhat.com>
Sat, 2 Nov 2019 00:12:03 +0000 (01:12 +0100)
committerDavid S. Miller <davem@davemloft.net>
Tue, 5 Nov 2019 22:03:11 +0000 (14:03 -0800)
commit15122464d525f684a61806d28597050cdcef0f32
tree756dfcf379828884fe9d13c62ff1048fb058516ftree | snapshot
parentb8fed591df6bf7a86a5f55a3d67a3a1a4d0fce73commit | diff
icmp: add helpers to recognize ICMP error packets

Add two helper functions, one for IPv4 and one for IPv6, to recognize
the ICMP packets which are error responses.
This packets are special because they have as payload the original
header of the packet which generated it (RFC 792 says at least 8 bytes,
but Linux actually includes much more than that).

Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/icmp.h diff | blob | history
include/linux/icmpv6.h diff | blob | history
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