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authorDaniel Borkmann <dborkman@redhat.com>2014-04-11 13:22:00 +0200
committerDavid S. Miller <davem@davemloft.net>2014-04-12 01:59:38 -0400
commit0f2eea4b7e29ab693b07f6eedf8e87a0c11b8b42 (patch)
tree0d1b66aac812f1e2fa01f0e311e66d48dd747442
parent6871438cc4e5307ccda70fa2a246a546300ac9fa (diff)
downloadlinux-0f2eea4b7e29ab693b07f6eedf8e87a0c11b8b42.tar.gz
pktgen: be friendly to LLTX devices
Similarly to commit 43279500deca ("packet: respect devices with LLTX flag in direct xmit"), we can basically apply the very same to pktgen. This will help testing against LLTX devices such as dummy driver (or others), which only have a single netdevice txq and would otherwise require locking their txq from pktgen side while e.g. in dummy case, we would not need any locking. Fix this by making use of HARD_TX_{UN,}LOCK API, so that NETIF_F_LLTX will be respected. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/pktgen.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index d068ec25db1..0304f981f7f 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3338,7 +3338,9 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
queue_map = skb_get_queue_mapping(pkt_dev->skb);
txq = netdev_get_tx_queue(odev, queue_map);
- __netif_tx_lock_bh(txq);
+ local_bh_disable();
+
+ HARD_TX_LOCK(odev, txq, smp_processor_id());
if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
ret = NETDEV_TX_BUSY;
@@ -3374,7 +3376,9 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev)
pkt_dev->last_ok = 0;
}
unlock:
- __netif_tx_unlock_bh(txq);
+ HARD_TX_UNLOCK(odev, txq);
+
+ local_bh_enable();
/* If pkt_dev->count is zero, then run forever */
if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {