mirror of https://gitee.com/openkylin/linux.git
27a884dc3c
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)
Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| .. | ||
| Makefile | ||
| ibm_emac.h | ||
| ibm_emac_core.c | ||
| ibm_emac_core.h | ||
| ibm_emac_debug.c | ||
| ibm_emac_debug.h | ||
| ibm_emac_mal.c | ||
| ibm_emac_mal.h | ||
| ibm_emac_phy.c | ||
| ibm_emac_phy.h | ||
| ibm_emac_rgmii.c | ||
| ibm_emac_rgmii.h | ||
| ibm_emac_tah.c | ||
| ibm_emac_tah.h | ||
| ibm_emac_zmii.c | ||
| ibm_emac_zmii.h | ||