From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: [PATCH net-next 1/4] net: Add IPv6 support to l3mdev Date: Wed, 7 Oct 2015 09:50:37 -0700 Message-ID: <1444236640-2410-2-git-send-email-dsa@cumulusnetworks.com> References: <1444236640-2410-1-git-send-email-dsa@cumulusnetworks.com> Cc: dsahern@gmail.com, David Ahern To: netdev@vger.kernel.org Return-path: Received: from mail-pa0-f52.google.com ([209.85.220.52]:34401 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755019AbbJGQut (ORCPT ); Wed, 7 Oct 2015 12:50:49 -0400 Received: by padhy16 with SMTP id hy16so26348568pad.1 for ; Wed, 07 Oct 2015 09:50:48 -0700 (PDT) In-Reply-To: <1444236640-2410-1-git-send-email-dsa@cumulusnetworks.com> Sender: netdev-owner@vger.kernel.org List-ID: Add operations to retrieve cached IPv6 dst entry from l3mdev device and lookup IPv6 source address. Signed-off-by: David Ahern --- include/net/l3mdev.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h index 44a19a171104..f3c5e18b3170 100644 --- a/include/net/l3mdev.h +++ b/include/net/l3mdev.h @@ -19,14 +19,22 @@ * @l3mdev_get_rtable: Get cached IPv4 rtable (dst_entry) for device * * @l3mdev_get_saddr: Get source address for a flow + * + * @l3mdev_get_rt6_dst: Get cached IPv6 rt6_info (dst_entry) for device */ struct l3mdev_ops { u32 (*l3mdev_fib_table)(const struct net_device *dev); + + /* IPv4 ops */ struct rtable * (*l3mdev_get_rtable)(const struct net_device *dev, const struct flowi4 *fl4); void (*l3mdev_get_saddr)(struct net_device *dev, struct flowi4 *fl4); + + /* IPv6 ops */ + struct dst_entry * (*l3mdev_get_rt6_dst)(const struct net_device *dev, + const struct flowi6 *fl6); }; #ifdef CONFIG_NET_L3_MASTER_DEV @@ -123,6 +131,32 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex, } } +static inline struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev, + const struct flowi6 *fl6) +{ + if (netif_is_l3_master(dev) && dev->l3mdev_ops->l3mdev_get_rt6_dst) + return dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6); + + return NULL; +} + +static inline +struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net, + const struct flowi6 *fl6) +{ + struct dst_entry *dst = NULL; + struct net_device *dev; + + dev = dev_get_by_index(net, fl6->flowi6_oif); + if (dev) { + if (netif_is_l3_master(dev)) + dst = l3mdev_get_rt6_dst(dev, fl6); + dev_put(dev); + } + + return dst; +} + #else static inline int l3mdev_master_ifindex_rcu(struct net_device *dev) @@ -171,6 +205,19 @@ static inline void l3mdev_get_saddr(struct net *net, int ifindex, struct flowi4 *fl4) { } + +static inline +struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev, + const struct flowi6 *fl6) +{ + return NULL; +} +static inline +struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net, + const struct flowi6 *fl6) +{ + return NULL; +} #endif #endif /* _NET_L3MDEV_H_ */ -- 1.9.1