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| author | Changli Gao <xiaosuo@gmail.com> | 2010-12-10 16:02:20 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-10 16:02:20 -0800 |
| commit | c053fd96d0d3d18c721f880b8fdd0b925894d9c4 (patch) | |
| tree | 082814cf599326b07146135823a4c9cae40059d9 /net/packet | |
| parent | ed4ba4b5b96742d29225308ccccbdb1810b63064 (diff) | |
| download | linux-c053fd96d0d3d18c721f880b8fdd0b925894d9c4.tar.gz linux-c053fd96d0d3d18c721f880b8fdd0b925894d9c4.tar.bz2 linux-c053fd96d0d3d18c721f880b8fdd0b925894d9c4.zip | |
af_packet: use swap() instead of the open coded macro XC()
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet')
| -rw-r--r-- | net/packet/af_packet.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 246a04a13234..e79efaf06389 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2501,22 +2501,20 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req, mutex_lock(&po->pg_vec_lock); if (closing || atomic_read(&po->mapped) == 0) { err = 0; -#define XC(a, b) ({ __typeof__ ((a)) __t; __t = (a); (a) = (b); __t; }) spin_lock_bh(&rb_queue->lock); - pg_vec = XC(rb->pg_vec, pg_vec); + swap(rb->pg_vec, pg_vec); rb->frame_max = (req->tp_frame_nr - 1); rb->head = 0; rb->frame_size = req->tp_frame_size; spin_unlock_bh(&rb_queue->lock); - order = XC(rb->pg_vec_order, order); - req->tp_block_nr = XC(rb->pg_vec_len, req->tp_block_nr); + swap(rb->pg_vec_order, order); + swap(rb->pg_vec_len, req->tp_block_nr); rb->pg_vec_pages = req->tp_block_size/PAGE_SIZE; po->prot_hook.func = (po->rx_ring.pg_vec) ? tpacket_rcv : packet_rcv; skb_queue_purge(rb_queue); -#undef XC if (atomic_read(&po->mapped)) pr_err("packet_mmap: vma is busy: %d\n", atomic_read(&po->mapped)); |