diff options
Diffstat (limited to 'sys/net/bpf_zerocopy.c')
| -rw-r--r-- | sys/net/bpf_zerocopy.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sys/net/bpf_zerocopy.c b/sys/net/bpf_zerocopy.c index 9ca2ba7..de4d49a 100644 --- a/sys/net/bpf_zerocopy.c +++ b/sys/net/bpf_zerocopy.c @@ -410,6 +410,24 @@ bpf_zerocopy_bufheld(struct bpf_d *d) } /* + * Notification from the BPF framework that the free buffer has been been + * re-assigned. This happens when the user ackknowledges the buffer. + */ +void +bpf_zerocopy_buf_reclaimed(struct bpf_d *d) +{ + struct zbuf *zb; + + KASSERT(d->bd_bufmode == BPF_BUFMODE_ZBUF, + ("bpf_zerocopy_reclaim_buf: not in zbuf mode")); + + KASSERT(d->bd_fbuf != NULL, + ("bpf_zerocopy_buf_reclaimed: NULL free buff")); + zb = (struct zbuf *)d->bd_fbuf; + zb->zb_flags &= ~ZBUF_FLAG_IMMUTABLE; +} + +/* * Query from the BPF framework regarding whether the buffer currently in the * held position can be moved to the free position, which can be indicated by * the user process making their generation number equal to the kernel |
