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| author | Jiri Pirko <jiri@resnulli.us> | 2012-07-20 02:28:48 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-20 11:07:00 -0700 |
| commit | 76ff5cc91935c51fcf1a6a99ffa28b97a6e7a884 (patch) | |
| tree | e0b8367bc36b79986d0c5951485531377a39c680 | |
| parent | d40156aa5ecbd51fed932ed4813df82b56e5ff4d (diff) | |
| download | op-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>
| -rw-r--r-- | include/linux/if_link.h | 2 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 15 |
2 files changed, 15 insertions, 2 deletions
diff --git a/include/linux/if_link.h b/include/linux/if_link.h index f715750..ac173bd 100644 --- a/include/linux/if_link.h +++ b/include/linux/if_link.h @@ -140,6 +140,8 @@ enum { IFLA_EXT_MASK, /* Extended info mask, VFs, etc */ IFLA_PROMISCUITY, /* Promiscuity count: > 0 means acts PROMISC */ #define IFLA_PROMISCUITY IFLA_PROMISCUITY + IFLA_NUM_TX_QUEUES, + IFLA_NUM_RX_QUEUES, __IFLA_MAX }; 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; |
