Eric Dumazet 0287587884 net: better IFF_XMIT_DST_RELEASE support ... Testing xmit_more support with netperf and connected UDP sockets, I found strange dst refcount false sharing. Current handling of IFF_XMIT_DST_RELEASE is not optimal. Dropping dst in validate_xmit_skb() is certainly too late in case packet was queued by cpu X but dequeued by cpu Y The logical point to take care of drop/force is in __dev_queue_xmit() before even taking qdisc lock. As Julian Anastasov pointed out, need for skb_dst() might come from some packet schedulers or classifiers. This patch adds new helper to cleanly express needs of various drivers or qdiscs/classifiers. Drivers that need skb_dst() in their ndo_start_xmit() should call following helper in their setup instead of the prior : dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; -> netif_keep_dst(dev); Instead of using a single bit, we use two bits, one being eventually rebuilt in bonding/team drivers. The other one, is permanent and blocks IFF_XMIT_DST_RELEASE being rebuilt in bonding/team. Eventually, we could add something smarter later. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-10-07 13:22:11 -04:00
..
6lowpan	6lowpan: Allow 6LoWPAN to be modular	2014-08-07 11:44:18 -07:00
9p	9P: remove unnecessary break after return	2014-07-15 16:27:00 -07:00
802	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
8021q	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
appletalk	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-07-16 14:09:34 -07:00
atm	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
ax25
batman-adv	batman-adv: Fix parameter order of hlist_add_behind	2014-08-16 19:19:08 -07:00
bluetooth	Bluetooth: 6lowpan: Check transmit errors for multicast packets	2014-10-02 13:41:57 +03:00
bridge	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2014-10-05 21:32:37 -04:00
caif	caif: remove unnecessary break after goto	2014-07-15 16:27:01 -07:00
can	can: add hash based access to single EFF frame filters	2014-05-19 09:38:24 +02:00
ceph	libceph: do not hard code max auth ticket len	2014-09-10 20:08:36 +04:00
core	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
dcb	dcbnl : Fix misleading dcb_app->priority explanation	2014-07-30 17:21:05 -07:00
dccp	net/dccp/ccid.c: add __init to ccid_activate	2014-10-01 18:33:13 -04:00
decnet	af_decnet: Use time_after_eq	2014-08-22 12:23:11 -07:00
dns_resolver	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2014-08-06 08:06:39 -07:00
dsa	net: dsa: do not call phy_start_aneg	2014-10-04 20:44:44 -04:00
ethernet	net: Add function for parsing the header length out of linear ethernet frames	2014-09-05 17:47:02 -07:00
hsr	net/hsr: Remove left-over never-true conditional code.	2014-07-11 15:04:40 -07:00
ieee802154	Merge tag 'master-2014-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-10-05 21:34:39 -04:00
ipv4	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
ipv6	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
ipx	net: Split sk_no_check into sk_no_check_{rx,tx}	2014-05-23 16:28:53 -04:00
irda	irda: add __init to irlan_open	2014-09-30 17:08:06 -04:00
iucv	iucv: Convert pr_warning to pr_warn	2014-09-10 12:40:10 -07:00
key	af_key: remove unnecessary break after return	2014-07-15 16:27:00 -07:00
l2tp	l2tp: Refactor l2tp core driver to make use of the common UDP tunnel functions	2014-09-19 15:57:15 -04:00
lapb
llc
mac80211	Merge tag 'master-2014-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-09-26 15:39:24 -04:00
mac802154	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless	2014-09-08 11:14:56 -04:00
mpls	net: Remove gso_send_check as an offload callback	2014-09-26 00:22:47 -04:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2014-10-05 21:32:37 -04:00
netlabel	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-08-06 09:38:14 -07:00
netlink	netlink: Annotate RCU locking for seq_file walker	2014-08-14 15:13:40 -07:00
netrom	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
nfc	NFC: nci: Add support for proprietary RF Protocols	2014-09-24 02:02:24 +02:00
openvswitch	openvswitch: fix a sparse warning	2014-10-07 00:10:48 -04:00
packet	net: Pass a "more" indication down into netdev_start_xmit() code paths.	2014-09-01 17:39:55 -07:00
phonet	net: fix rcu access on phonet_routes	2014-10-06 18:16:30 -04:00
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
rfkill	net: rfkill: gpio: Fix clock status	2014-09-22 16:02:15 -04:00
rose	rose: use %*ph specifier	2014-09-07 16:07:25 -07:00
rxrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-09-23 12:09:27 -04:00
sched	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
sctp	net/ipv4: bind ip_nonlocal_bind to current netns	2014-09-09 11:27:09 -07:00
sunrpc	NFS client updates for Linux 3.17	2014-08-13 18:13:19 -06:00
tipc	tipc: fix sparse warnings	2014-09-10 14:00:58 -07:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
vmw_vsock	vsock: Make transport the proto owner	2014-05-05 13:13:50 -04:00
wimax
wireless	Merge tag 'master-2014-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-09-26 15:39:24 -04:00
x25
xfrm	net: cleanup and document skb fclone layout	2014-10-01 16:34:25 -04:00
compat.c	net: sendmsg: fix NULL pointer dereference	2014-07-29 12:20:22 -07:00
Kconfig	netfilter: bridge: build br_nf_core only if required	2014-09-30 14:07:51 -04:00
Makefile	6lowpan: introduce new net/6lowpan directory	2014-07-12 01:53:30 +02:00
nonet.c
socket.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-09-23 12:09:27 -04:00
sysctl_net.c