diff options
| author | Sebastiano Di Paola <sebastiano.dipaola@gmail.com> | 2009-01-30 23:37:17 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-17 09:28:55 -0800 |
| commit | 3cb569832d1b79a60b5df1b510c1712aa76e7cdd (patch) | |
| tree | 7329fb2d1843ac89c5bdbcb3caa881d8f34b2b56 | |
| parent | d6283a8094509991b9d72ec8cdea1d6236dd09c6 (diff) | |
net: packet socket packet_lookup_frame fix
[ Upstream commit f9e6934502e46c363100245f137ddf0f4b1cb574 ]
packet_lookup_frames() fails to get user frame if current frame header
status contains extra flags.
This is due to the wrong assumption on the operators precedence during
frame status tests.
Fixed by forcing the right operators precedence order with explicit brackets.
Signed-off-by: Paolo Abeni <paolo.abeni@gmail.com>
Signed-off-by: Sebastiano Di Paola <sebastiano.dipaola@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/packet/af_packet.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index c718e7e3f7de..1789f6cf1cbe 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -220,13 +220,13 @@ static void *packet_lookup_frame(struct packet_sock *po, unsigned int position, h.raw = po->pg_vec[pg_vec_pos] + (frame_offset * po->frame_size); switch (po->tp_version) { case TPACKET_V1: - if (status != h.h1->tp_status ? TP_STATUS_USER : - TP_STATUS_KERNEL) + if (status != (h.h1->tp_status ? TP_STATUS_USER : + TP_STATUS_KERNEL)) return NULL; break; case TPACKET_V2: - if (status != h.h2->tp_status ? TP_STATUS_USER : - TP_STATUS_KERNEL) + if (status != (h.h2->tp_status ? TP_STATUS_USER : + TP_STATUS_KERNEL)) return NULL; break; } |