diff options
| author | Björn Töpel <bjorn.topel@intel.com> | 2018-07-23 05:43:03 -0400 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-07-25 20:53:10 -0400 |
| commit | d24458e43b103c7eb7b2fd57bcac392fd7750438 (patch) | |
| tree | d5075e1f336d2568f6b393d8b1d1c501cf1c4c13 /kernel/bpf/arraymap.c | |
| parent | 9e4e5b5c86661e767f3074bedbbf2ca59f8fbd18 (diff) | |
xsk: fix poll/POLLIN premature returns
Polling for the ingress queues relies on reading the producer/consumer
pointers of the Rx queue.
Prior this commit, a cached consumer pointer could be used, instead of
the actual consumer pointer and therefore report POLLIN prematurely.
This patch makes sure that the non-cached consumer pointer is used
instead.
Reported-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Qi Zhang <qi.z.zhang@intel.com>
Fixes: c497176cb2e4 ("xsk: add Rx receive functions and poll support")
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'kernel/bpf/arraymap.c')
0 files changed, 0 insertions, 0 deletions