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Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 9b27d0cd766d..e6445d8f3f57 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4226,6 +4226,8 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
}
if (req->tp_block_nr) {
+ unsigned int min_frame_size;
+
/* Sanity tests and some calculations */
err = -EBUSY;
if (unlikely(rb->pg_vec))
@@ -4248,12 +4250,12 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
goto out;
if (unlikely(!PAGE_ALIGNED(req->tp_block_size)))
goto out;
+ min_frame_size = po->tp_hdrlen + po->tp_reserve;
if (po->tp_version >= TPACKET_V3 &&
- req->tp_block_size <=
- BLK_PLUS_PRIV((u64)req_u->req3.tp_sizeof_priv) + sizeof(struct tpacket3_hdr))
+ req->tp_block_size <
+ BLK_PLUS_PRIV((u64)req_u->req3.tp_sizeof_priv) + min_frame_size)
goto out;
- if (unlikely(req->tp_frame_size < po->tp_hdrlen +
- po->tp_reserve))
+ if (unlikely(req->tp_frame_size < min_frame_size))
goto out;
if (unlikely(req->tp_frame_size & (TPACKET_ALIGNMENT - 1)))
goto out;