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packet: fill the gap of TPACKET_ALIGNMENT with zeros

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struct tpacket{2,3}_hdr is aligned to a multiple of TPACKET_ALIGNMENT.
Explicitly defining and zeroing the gap of this makes additional changes
easier.

Signed-off-by: Atzm Watanabe <atzm@stratosphere.co.jp>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Atzm Watanabe 2013-12-17 22:53:36 +09:00 • committed by David S. Miller
parent 51846355bc
commit e4d26f4b08
2 changed files with 4 additions and 2 deletions
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3
include/uapi/linux/if_packet.h
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@ -133,7 +133,7 @@ struct tpacket2_hdr {
__u32 tp_sec;
__u32 tp_nsec;
__u16 tp_vlan_tci;
__u16 tp_padding;
__u8 tp_padding[6];
};
struct tpacket_hdr_variant1 {
@ -154,6 +154,7 @@ struct tpacket3_hdr {
union {
struct tpacket_hdr_variant1 hv1;
};
__u8 tp_padding[12];
};
struct tpacket_bd_ts {