| SKB_ZEROCOPY(9) | Linux Networking | SKB_ZEROCOPY(9) |
NAME¶
skb_zerocopy - Zero copy skb to skb
SYNOPSIS¶
int skb_zerocopy(struct sk_buff * to, struct sk_buff * from, int len, int hlen);
ARGUMENTS¶
to
destination buffer
from
-- undescribed --
len
number of bytes to copy from source buffer
hlen
size of linear headroom in destination buffer
DESCRIPTION¶
Copies up to `len` bytes from `from` to `to` by creating references to the frags in the source buffer.
The `hlen` as calculated by skb_zerocopy_headlen specifies the headroom in the `to` buffer.
0¶
everything is OK -ENOMEM: couldn't orphan frags of from due to lack of memory -EFAULT: skb_copy_bits found some problem with skb geometry
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |