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| author | Patrick McHardy <kaber@trash.net> | 2008-07-14 22:49:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-14 22:49:06 -0700 |
| commit | 6aa895b047720f71ec4eb11452f7c3ce8426941f (patch) | |
| tree | ba52827c2e90de0678043ecf9d43208057d05da7 /include/linux/skbuff.h | |
| parent | 968edbe1c82f1a50d80225ed7e410aba419e55bf (diff) | |
| download | linux-3.10-6aa895b047720f71ec4eb11452f7c3ce8426941f.tar.gz linux-3.10-6aa895b047720f71ec4eb11452f7c3ce8426941f.tar.bz2 linux-3.10-6aa895b047720f71ec4eb11452f7c3ce8426941f.zip | |
vlan: Don't store VLAN tag in cb
Use a real skb member to store the skb to avoid clashes with qdiscs,
which are allowed to use the cb area themselves. As currently only real
devices that consume the skb set the NETIF_F_HW_VLAN_TX flag, no explicit
invalidation is neccessary.
The new member fills a hole on 64 bit, the skb layout changes from:
__u32 mark; /* 172 4 */
sk_buff_data_t transport_header; /* 176 4 */
sk_buff_data_t network_header; /* 180 4 */
sk_buff_data_t mac_header; /* 184 4 */
sk_buff_data_t tail; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
sk_buff_data_t end; /* 192 4 */
/* XXX 4 bytes hole, try to pack */
to
__u32 mark; /* 172 4 */
__u16 vlan_tci; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
sk_buff_data_t transport_header; /* 180 4 */
sk_buff_data_t network_header; /* 184 4 */
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8f10e3d08fd..7ea44f6621f 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -246,6 +246,7 @@ typedef unsigned char *sk_buff_data_t; * @dma_cookie: a cookie to one of several possible DMA operations * done by skb DMA functions * @secmark: security marking + * @vlan_tci: vlan tag control information */ struct sk_buff { @@ -326,6 +327,8 @@ struct sk_buff { __u32 mark; + __u16 vlan_tci; + sk_buff_data_t transport_header; sk_buff_data_t network_header; sk_buff_data_t mac_header; |