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net: Allow netdevices to specify needed head/tailroom

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This patch adds needed_headroom/needed_tailroom members to struct
net_device and updates many places that allocate sbks to use them. Not
all of them can be converted though, and I'm sure I missed some (I
mostly grepped for LL_RESERVED_SPACE)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg
2008-05-12 20:48:31 -07:00
committed by David S. Miller
parent 8388e3da34
commit f5184d267c
13 changed files with 39 additions and 31 deletions
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4
net/ipv6/mcast.c
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@ -1411,7 +1411,7 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
IPV6_TLV_PADN, 0 };
/* we assume size > sizeof(ra) here */
skb = sock_alloc_send_skb(sk, size + LL_RESERVED_SPACE(dev), 1, &err);
skb = sock_alloc_send_skb(sk, size + LL_ALLOCATED_SPACE(dev), 1, &err);
if (!skb)
return NULL;
@ -1790,7 +1790,7 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
payload_len = len + sizeof(ra);
full_len = sizeof(struct ipv6hdr) + payload_len;
skb = sock_alloc_send_skb(sk, LL_RESERVED_SPACE(dev) + full_len, 1, &err);
skb = sock_alloc_send_skb(sk, LL_ALLOCATED_SPACE(dev) + full_len, 1, &err);
if (skb == NULL) {
rcu_read_lock();