From: Sebastiano Di Paola Date: Fri, 30 Jan 2009 23:37:17 +0000 (+0000) Subject: net: packet socket packet_lookup_frame fix X-Git-Tag: firefly_0821_release~15263^2~198 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f9e6934502e46c363100245f137ddf0f4b1cb574;p=firefly-linux-kernel-4.4.55.git net: packet socket packet_lookup_frame fix 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 Signed-off-by: Sebastiano Di Paola Signed-off-by: David S. Miller --- diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 9454d4ae46df..1fc4a7885c41 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -222,13 +222,13 @@ 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; }