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authorJiri Pirko <jiri@resnulli.us>2012-07-20 02:28:48 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-20 11:07:00 -0700
commit76ff5cc91935c51fcf1a6a99ffa28b97a6e7a884 (patch)
treee0b8367bc36b79986d0c5951485531377a39c680 /net/core
parentd40156aa5ecbd51fed932ed4813df82b56e5ff4d (diff)
downloadop-kernel-dev-76ff5cc91935c51fcf1a6a99ffa28b97a6e7a884.zip
op-kernel-dev-76ff5cc91935c51fcf1a6a99ffa28b97a6e7a884.tar.gz
rtnl: allow to specify number of rx and tx queues on device creation
This patch introduces IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES by which userspace can set number of rx and/or tx queues to be allocated for newly created netdevice. This overrides ops->get_num_[tr]x_queues() Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/rtnetlink.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index db5a8ad..5bb1ebc 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -771,6 +771,8 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ nla_total_size(4) /* IFLA_LINK */
+ nla_total_size(4) /* IFLA_MASTER */
+ nla_total_size(4) /* IFLA_PROMISCUITY */
+ + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
+ + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
+ nla_total_size(1) /* IFLA_OPERSTATE */
+ nla_total_size(1) /* IFLA_LINKMODE */
+ nla_total_size(ext_filter_mask
@@ -889,6 +891,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
nla_put_u32(skb, IFLA_GROUP, dev->group) ||
nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
+ nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
+ nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
(dev->ifindex != dev->iflink &&
nla_put_u32(skb, IFLA_LINK, dev->iflink)) ||
(dev->master &&
@@ -1106,6 +1110,8 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_AF_SPEC] = { .type = NLA_NESTED },
[IFLA_EXT_MASK] = { .type = NLA_U32 },
[IFLA_PROMISCUITY] = { .type = NLA_U32 },
+ [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
+ [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
};
EXPORT_SYMBOL(ifla_policy);
@@ -1627,9 +1633,14 @@ struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
unsigned int num_tx_queues = 1;
unsigned int num_rx_queues = 1;
- if (ops->get_num_tx_queues)
+ if (tb[IFLA_NUM_TX_QUEUES])
+ num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
+ else if (ops->get_num_tx_queues)
num_tx_queues = ops->get_num_tx_queues();
- if (ops->get_num_rx_queues)
+
+ if (tb[IFLA_NUM_RX_QUEUES])
+ num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]);
+ else if (ops->get_num_rx_queues)
num_rx_queues = ops->get_num_rx_queues();
err = -ENOMEM;
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