[RFC PATCH 2/4] netdev: new feature flag NETIF_F_HW_OFFLOAD to indicate netdev object offload to hardware
From: <hidden>
Date: 2014-11-21 22:49:38
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Roopa Prabhu <redacted> This patch adds a new NETIF_F_HW_OFFLOAD feature flag to offload logical interfaces to hw. Useful in cases of bridges, bonds etc where you want to offload the logical interface attributes to hw. --- include/linux/netdev_features.h | 1 + net/core/rtnetlink.c | 7 +++++++ 2 files changed, 8 insertions(+)
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 8e30685..09da213 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h@@ -66,6 +66,7 @@ enum { NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */ NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */ NETIF_F_BUSY_POLL_BIT, /* Busy poll */ + NETIF_F_HW_OFFLOAD, /* generic hw offload */ /* * Add your fresh new feature above and remember to update
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f839354..97b8f48 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c@@ -2106,6 +2106,13 @@ replay: goto out; } + /* + * If the newlink request came in with a HW_OFFLOAD + * flag, then set hw offload feature flag + */ + if (nlh->nlmsg_flags & NLM_F_HW_OFFLOAD) + dev->features |= NETIF_F_HW_OFFLOAD; + dev->ifindex = ifm->ifi_index; if (ops->newlink) {
--
1.7.10.4