ipv6: Remove all uses of LL_ALLOCATED_SPACE

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ipv6: Remove all uses of LL_ALLOCATED_SPACE

The macro LL_ALLOCATED_SPACE was ill-conceived.  It applies the
alignment to the sum of needed_headroom and needed_tailroom.  As
the amount that is then reserved for head room is needed_headroom
with alignment, this means that the tail room left may be too small.

This patch replaces all uses of LL_ALLOCATED_SPACE in net/ipv6
with the macro LL_RESERVED_SPACE and direct reference to
needed_tailroom.

This also fixes the problem with needed_headroom changing between
allocating the skb and reserving the head room.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Herbert Xu 2011-11-18 02:20:04 +00:00 • committed by David S. Miller

parent 6608824329

commit a7ae199224

4 changed files with 27 additions and 12 deletions

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8

net/ipv6/ip6_output.c

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12

net/ipv6/mcast.c

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13

net/ipv6/ndisc.c

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6

net/ipv6/raw.c

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