On Tue, Oct 6, 2015 at 11:53 AM, Eric W. Biederman
<ebiederm@xxxxxxxxxxxx> wrote:
> Compute net once in ipvlan_process_v4_outbound and ipvlan_process_v6_outbound
> and store it in a variable so that net does not need to be recomputed next time
> it is used.
>
It's used exactly once at this moment so don't know what "next time"
is. Do you have any additional patch(es) planned?
> Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
> ---
> drivers/net/ipvlan/ipvlan_core.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
> index 75dcf36c0366..976f30b291f6 100644
> --- a/drivers/net/ipvlan/ipvlan_core.c
> +++ b/drivers/net/ipvlan/ipvlan_core.c
> @@ -344,6 +344,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
> {
> const struct iphdr *ip4h = ip_hdr(skb);
> struct net_device *dev = skb->dev;
> + struct net *net = dev_net(dev);
> struct rtable *rt;
> int err, ret = NET_XMIT_DROP;
> struct flowi4 fl4 = {
> @@ -354,7 +355,7 @@ static int ipvlan_process_v4_outbound(struct sk_buff *skb)
> .saddr = ip4h->saddr,
> };
>
> - rt = ip_route_output_flow(dev_net(dev), &fl4, NULL);
> + rt = ip_route_output_flow(net, &fl4, NULL);
> if (IS_ERR(rt))
> goto err;
>
> @@ -381,6 +382,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
> {
> const struct ipv6hdr *ip6h = ipv6_hdr(skb);
> struct net_device *dev = skb->dev;
> + struct net *net = dev_net(dev);
> struct dst_entry *dst;
> int err, ret = NET_XMIT_DROP;
> struct flowi6 fl6 = {
> @@ -393,7 +395,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb)
> .flowi6_proto = ip6h->nexthdr,
> };
>
> - dst = ip6_route_output(dev_net(dev), NULL, &fl6);
> + dst = ip6_route_output(net, NULL, &fl6);
> if (dst->error) {
> ret = dst->error;
> dst_release(dst);
> --
> 2.2.1
>
> --
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