summaryrefslogtreecommitdiffstats
path: root/net/core
diff options
context:
space:
mode:
authorCong Wang <xiyou.wangcong@gmail.com>2018-01-25 18:26:23 -0800
committerDavid S. Miller <davem@davemloft.net>2018-01-29 12:42:15 -0500
commit48bfd55e7e4149a304e89c1999436cf52d094a27 (patch)
tree6318e75ea99c74a81622ebe82ee2c71c9338baf4 /net/core
parent6a643ddb5624be7e0694d49f5765a8d41c1ab6d0 (diff)
downloadlinux-48bfd55e7e4149a304e89c1999436cf52d094a27.tar.bz2
net_sched: plug in qdisc ops change_tx_queue_len
Introduce a new qdisc ops ->change_tx_queue_len() so that each qdisc could decide how to implement this if it wants. Previously we simply read dev->tx_queue_len, after pfifo_fast switches to skb array, we need this API to resize the skb array when we change dev->tx_queue_len. To avoid handling race conditions with TX BH, we need to deactivate all TX queues before change the value and bring them back after we are done, this also makes implementation easier. Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 520c24671bc5..dda9d7b9a840 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7070,6 +7070,7 @@ int dev_change_tx_queue_len(struct net_device *dev, unsigned long new_len)
dev->tx_queue_len = orig_len;
return res;
}
+ return dev_qdisc_change_tx_queue_len(dev);
}
return 0;