diff options
| author | Vincenzo Maffione <vmaffione@FreeBSD.org> | 2019-11-19 21:29:49 +0000 |
|---|---|---|
| committer | Vincenzo Maffione <vmaffione@FreeBSD.org> | 2019-11-19 21:29:49 +0000 |
| commit | a56e6334d1b7ed6e6faaa8b4612d948005ba74f5 (patch) | |
| tree | 3d083cfff2d26f31c3180f90223fe3288232de69 /sys/net | |
| parent | f8d4f9bce9f550aeba53b674bf7ab0e77e4c58b5 (diff) | |
| download | src-a56e6334d1b7ed6e6faaa8b4612d948005ba74f5.tar.gz src-a56e6334d1b7ed6e6faaa8b4612d948005ba74f5.zip | |
netmap: check if we already ran mmap before we attempt it
Submitted by: neel@neelc.org
Reviewed by: vmaffione
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22390
Notes
Notes:
svn path=/head/; revision=354867
Diffstat (limited to 'sys/net')
| -rw-r--r-- | sys/net/netmap_user.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/net/netmap_user.h b/sys/net/netmap_user.h index 2638e45c69c5..1e43aaedbfdd 100644 --- a/sys/net/netmap_user.h +++ b/sys/net/netmap_user.h @@ -981,7 +981,8 @@ nm_close(struct nm_desc *d) static int nm_mmap(struct nm_desc *d, const struct nm_desc *parent) { - //XXX TODO: check if mmap is already done + if (d->done_mmap) + return 0; if (IS_NETMAP_DESC(parent) && parent->mem && parent->req.nr_arg2 == d->req.nr_arg2) { |