tree ed8d5aedd678f86e8554dc0b1c080a43ef4b331d
parent a7ae1992248e5cf9dc5bd35695ab846d27efe15f
author Herbert Xu <herbert@gondor.apana.org.au> 1321582804 +0000
committer David S. Miller <davem@davemloft.net> 1321645029 -0500

net: Remove all uses of LL_ALLOCATED_SPACE

net: 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 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>