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[SK_BUFF]: Introduce skb_reset_transport_header(skb)

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For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple cases:

skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()

The next ones will handle the slightly more "complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-03-13 13:06:52 -03:00
committed by David S. Miller
parent 0660e03f6b
commit badff6d01a
49 changed files with 82 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/bluetooth/af_bluetooth.c
View File

@ -221,7 +221,7 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
copied = len;
}
skb->h.raw = skb->data;
skb_reset_transport_header(skb);
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
skb_free_datagram(sk, skb);

9
net/bluetooth/hci_core.c
View File

@ -1074,11 +1074,11 @@ static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
struct hci_acl_hdr *hdr;
int len = skb->len;
hdr = (struct hci_acl_hdr *) skb_push(skb, HCI_ACL_HDR_SIZE);
skb_push(skb, HCI_ACL_HDR_SIZE);
skb_reset_transport_header(skb);
hdr = (struct hci_acl_hdr *)skb->h.raw;
hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
hdr->dlen = cpu_to_le16(len);
skb->h.raw = (void *) hdr;
}
int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags)
@ -1143,7 +1143,8 @@ int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
hdr.handle = cpu_to_le16(conn->handle);
hdr.dlen = skb->len;
skb->h.raw = skb_push(skb, HCI_SCO_HDR_SIZE);
skb_push(skb, HCI_SCO_HDR_SIZE);
skb_reset_transport_header(skb);
memcpy(skb->h.raw, &hdr, HCI_SCO_HDR_SIZE);
skb->dev = (void *) hdev;

2
net/bluetooth/hci_sock.c
View File

@ -375,7 +375,7 @@ static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
copied = len;
}
skb->h.raw = skb->data;
skb_reset_transport_header(skb);
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
hci_sock_cmsg(sk, msg, skb);