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| author |   Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-12-05 11:42:44 +0100 |
|---|---|---|
| committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-12-05 11:46:26 +0100 |
| commit | 32e04ea00cd159613e04acef75e52bfca6eeff2f (patch) | |
| tree | f19e4885612e596bb8c8c3c5914157ae5417e180 /lib/librte_eal/bsdapp/contigmem | |
| parent | 6cfa4f771efe39dbc944e799cbe465134c8931fa (diff) | |
Imported Upstream version 16.07.2
Change-Id: I76bc313e0942233ce259612069ded302dd6c87bb
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_eal/bsdapp/contigmem')
| -rw-r--r-- | lib/librte_eal/bsdapp/contigmem/contigmem.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/librte_eal/bsdapp/contigmem/contigmem.c b/lib/librte_eal/bsdapp/contigmem/contigmem.c index c6ca3b9c..da971deb 100644 --- a/lib/librte_eal/bsdapp/contigmem/contigmem.c +++ b/lib/librte_eal/bsdapp/contigmem/contigmem.c @@ -216,15 +216,19 @@ static int contigmem_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size, struct vm_object **obj, int nprot) { + uint64_t buffer_index; + /* * The buffer index is encoded in the offset. Divide the offset by * PAGE_SIZE to get the index of the buffer requested by the user * app. */ - if ((*offset/PAGE_SIZE) >= contigmem_num_buffers) + buffer_index = *offset / PAGE_SIZE; + if (buffer_index >= contigmem_num_buffers) return EINVAL; - *offset = (vm_ooffset_t)vtophys(contigmem_buffers[*offset/PAGE_SIZE]); + memset(contigmem_buffers[buffer_index], 0, contigmem_buffer_size); + *offset = (vm_ooffset_t)vtophys(contigmem_buffers[buffer_index]); *obj = vm_pager_allocate(OBJT_DEVICE, cdev, size, nprot, *offset, curthread->td_ucred); |