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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2011-11-18 02:20:04 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-11-18 14:37:09 -0500 |
| commit | ae641949df01b85117845bec45328eab6d6fada1 (patch) | |
| tree | ed8d5aedd678f86e8554dc0b1c080a43ef4b331d /net/core/netpoll.c | |
| parent | ipv6: Remove all uses of LL_ALLOCATED_SPACE (diff) | |
| download | linux-dev-ae641949df01b85117845bec45328eab6d6fada1.tar.xz linux-dev-ae641949df01b85117845bec45328eab6d6fada1.zip | |
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>
Diffstat (limited to 'net/core/netpoll.c')
| -rw-r--r-- | net/core/netpoll.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index cf64c1ffa4cd..1a7d8e2c9768 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -422,6 +422,7 @@ static void arp_reply(struct sk_buff *skb) struct sk_buff *send_skb; struct netpoll *np, *tmp; unsigned long flags; + int hlen, tlen; int hits = 0; if (list_empty(&npinfo->rx_np)) @@ -479,8 +480,9 @@ static void arp_reply(struct sk_buff *skb) if (tip != np->local_ip) continue; - send_skb = find_skb(np, size + LL_ALLOCATED_SPACE(np->dev), - LL_RESERVED_SPACE(np->dev)); + hlen = LL_RESERVED_SPACE(np->dev); + tlen = np->dev->needed_tailroom; + send_skb = find_skb(np, size + hlen + tlen, hlen); if (!send_skb) continue; |