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Venkateswararao Jujjuri (JV) 022cae3655 [net/9p] Preparation and helper functions for zero copy 
This patch prepares p9_fcall structure for zero copy. Added
fields send the payload buffer information to the transport layer.
In addition it adds a 'private' field for the transport layer to
store mapped/pinned page information so that it can be freed/unpinned
during req_done.

This patch also creates trans_common.[ch] to house helper functions.
It adds the following helper functions.

p9_release_req_pages - Release pages after the transaction.
p9_nr_pages - Return number of pages needed to accomodate the payload.
payload_gup - Translates user buffer into kernel pages.

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2011-03-15 09:57:34 -05:00
..
9p
[net/9p] Preparation and helper functions for zero copy
2011-03-15 09:57:34 -05:00
bluetooth
Bluetooth: Fix race condition with conn->sec_level
2011-01-19 14:43:11 -02:00
caif
include/net/caif/cfctrl.h: Remove unnecessary semicolons
2010-11-15 11:07:16 -08:00
irda
net: return operator cleanup
2010-09-23 14:33:39 -07:00
iucv
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
netfilter
netfilter: tproxy: do not assign timewait sockets to skb->sk
2011-02-17 11:32:38 +01:00
netns
netns: let net_generic take pointer-to-const args
2010-11-21 10:05:10 -08:00
phonet
phonet: some signedness bugs
2011-01-10 13:33:17 -08:00
sctp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
2011-01-19 20:25:45 -08:00
tc_act
net/sched: add ACT_CSUM action to update packets checksums
2010-08-20 01:42:59 -07:00
act_api.h
pkt_sched: gen_kill_estimator() rcu fixes
2010-06-11 18:37:08 -07:00
addrconf.h
net: kill unused macros from head file
2010-12-02 13:27:33 -08:00
af_ieee802154.h
af_ieee802154: add support for WANT_ACK socket option
2009-08-12 21:54:50 -07:00
af_rxrpc.h
…
af_unix.h
af_unix: limit recursion level
2010-11-29 09:45:15 -08:00
ah.h
ipsec: update MAX_AH_AUTH_LEN to support sha512
2011-01-13 21:48:25 -08:00
arp.h
arp: allow to invalidate specific ARP entries
2011-01-10 16:10:37 -08:00
atmclip.h
…
ax25.h
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ax88796.h
ax88796: Add method to take MAC from platform data
2009-03-24 23:32:03 -07:00
cfg80211.h
cfg80211: add mesh join/leave callback docs
2011-01-10 15:40:52 -05:00
checksum.h
…
cipso_ipv4.h
netlabel: Label incoming TCP connections correctly in SELinux
2009-03-28 15:01:36 +11:00
cls_cgroup.h
Merge commit 'v2.6.36-rc7' into core/rcu
2010-10-07 09:43:45 +02:00
compat.h
net: fix compat_sys_recvmmsg parameter type
2009-12-11 15:07:56 -08:00
datalink.h
…
dcbevent.h
net_dcb: add application notifiers
2010-12-31 10:47:46 -08:00
dcbnl.h
dcbnl: adding DCBX feature flags get-set
2010-12-31 10:50:54 -08:00
dn_dev.h
decnet: RCU conversion and get rid of dev_base_lock
2010-11-08 13:50:08 -08:00
dn_fib.h
decnet: Remove unused FIB metric macros.
2010-03-27 19:23:46 -07:00
dn_neigh.h
…
dn_nsp.h
net: use __packed annotation
2010-06-03 03:21:52 -07:00
dn_route.h
ipv4: Make rt->fl.iif tests lest obscure.
2010-11-11 17:07:48 -08:00
dn.h
net: avoid limits overflow
2010-11-10 12:12:00 -08:00
dsa.h
dsa: add switch chip cascading support
2009-03-21 19:06:54 -07:00
dsfield.h
…
dst_ops.h
net: Abstract default MTU metric calculation behind an accessor.
2010-12-14 13:01:14 -08:00
dst.h
net: Abstract default MTU metric calculation behind an accessor.
2010-12-14 13:01:14 -08:00
esp.h
…
ethoc.h
net: Add support for the OpenCores 10/100 Mbps Ethernet MAC.
2009-03-27 00:16:21 -07:00
fib_rules.h
fib_rules: __rcu annotates ctarget
2010-10-27 11:37:32 -07:00
flow.h
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-12-26 22:37:05 -08:00
garp.h
net/802: add __rcu annotations
2010-10-25 13:09:44 -07:00
gen_stats.h
net: cleanup include/net
2009-11-04 05:06:25 -08:00
genetlink.h
include/net/genetlink.h: Allow genlmsg_cancel to accept a NULL argument
2011-02-03 20:47:08 -08:00
gre.h
PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)
2010-08-21 23:05:39 -07:00
icmp.h
ipv4: raw: move struct raw_sock and raw_sk() to include/net/raw.h
2010-04-13 14:49:31 -07:00
ieee80211_radiotap.h
wireless: update radiotap parser
2010-02-08 16:50:53 -05:00
ieee802154_netdev.h
ieee802154: add an mlme_ops call to retrieve PHY object
2009-11-06 14:32:18 +03:00
ieee802154.h
ieee802154: move headers out of extra directory
2009-07-23 17:08:51 +04:00
if_inet6.h
ipv6: mcast: RCU conversion
2010-11-24 11:16:42 -08:00
inet6_connection_sock.h
ipv6: Create inet6_csk_route_req().
2010-12-02 10:59:22 -08:00
inet6_hashtables.h
tcp: Fix a connect() race with timewait sockets
2009-12-08 20:17:51 -08:00
inet_common.h
inet, inet6: make tcp_sendmsg() and tcp_sendpage() through inet_sendmsg() and inet_sendpage()
2010-07-12 20:21:46 -07:00
inet_connection_sock.h
net: kill unused macros
2010-12-19 21:59:35 -08:00
inet_ecn.h
net: return operator cleanup
2010-09-23 14:33:39 -07:00
inet_frag.h
fragment: add fast path for in-order fragments
2010-06-30 13:44:29 -07:00
inet_hashtables.h
tproxy: fix hash locking issue when using port redirection in __inet_inherit_port()
2010-10-21 13:06:43 +02:00
inet_sock.h
net: optimize INET input path further
2010-12-09 20:05:58 -08:00
inet_timewait_sock.h
net: optimize INET input path further
2010-12-09 20:05:58 -08:00
inetpeer.h
inetpeer: Fix incorrect comment about inetpeer struct size.
2010-12-01 17:29:08 -08:00
ip6_checksum.h
…
ip6_fib.h
ipv6: Add infrastructure to bind inet_peer objects to routes.
2010-11-30 12:27:11 -08:00
ip6_route.h
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-12-20 13:24:14 -08:00
ip6_tunnel.h
tunnels: add _rcu annotations
2010-10-25 13:09:45 -07:00
ip_fib.h
fib: Fix fib zone and its hash leak on namespace stop
2010-10-28 10:27:03 -07:00
ip_vs.h
ipvs: provide address family for debugging
2010-10-21 11:04:43 +02:00
ip.h
ipv4: Don't pre-seed hoplimit metric.
2010-12-12 22:08:17 -08:00
ipcomp.h
percpu: add __percpu sparse annotations to net
2010-02-16 23:05:38 -08:00
ipconfig.h
…
ipip.h
tunnels: add __rcu annotations
2010-10-27 11:37:32 -07:00
ipv6.h
ipv6: Add IPv6 multicast address flag defines
2011-02-22 10:07:27 -08:00
ipx.h
net: use __packed annotation
2010-06-03 03:21:52 -07:00
iw_handler.h
include/net/iw_handler.h: Use SIOCIWFIRST not SIOCSIWCOMMIT in comment
2010-03-31 14:49:12 -04:00
lapb.h
…
lib80211.h
lib80211: remove unused host_build_iv option
2010-07-26 15:09:04 -04:00
llc_c_ac.h
…
llc_c_ev.h
…
llc_c_st.h
…
llc_conn.h
llc: use a device based hash table to speed up multicast delivery
2009-12-26 20:43:57 -08:00
llc_if.h
…
llc_pdu.h
…
llc_s_ac.h
…
llc_s_ev.h
…
llc_s_st.h
…
llc_sap.h
…
llc.h
llc: convert llc_sap_list to RCU
2009-12-26 20:46:28 -08:00
mac80211.h
mac80211: add missing docs for off-chan TX flag
2011-01-10 15:40:52 -05:00
mip6.h
net: use __packed annotation
2010-06-03 03:21:52 -07:00
mld.h
ipv6 mcast: Introduce include/net/mld.h for MLD definitions.
2010-04-23 13:35:55 +09:00
ndisc.h
net: kill unused macros from head file
2010-12-02 13:27:33 -08:00
neighbour.h
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-11-19 13:13:47 -08:00
net_namespace.h
net_ns: add __rcu annotations
2010-10-25 14:18:27 -07:00
netdma.h
…
netevent.h
…
netlabel.h
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
netlink.h
netlink: let nlmsg and nla functions take pointer-to-const args
2010-11-16 09:52:32 -08:00
netrom.h
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
nexthop.h
…
nl802154.h
ieee802154: add support for channel pages from IEEE 802.15.4-2006
2009-08-19 23:08:22 +04:00
p8022.h
…
pkt_cls.h
net: Fix range checks in tcf_valid_offset().
2010-12-21 12:43:16 -08:00
pkt_sched.h
net: Define accessors to manipulate QDISC_STATE_RUNNING
2010-06-02 03:23:51 -07:00
protocol.h
net: add __rcu annotations to protocol
2010-10-27 11:37:31 -07:00
psnap.h
snap: use const for descriptor
2009-03-21 19:06:50 -07:00
raw.h
include/net/raw.h: Convert raw_seq_private macro to inline
2010-09-08 13:42:22 -07:00
rawv6.h
ipv6: Use correct data types for ICMPv6 type and code
2009-06-23 04:31:07 -07:00
red.h
sched: remove unused backlog in RED stats
2011-01-12 19:00:39 -08:00
regulatory.h
cfg80211: Fix regulatory bug with multiple cards and delays
2010-11-22 15:48:51 -05:00
request_sock.h
tcp: account SYN-ACK timeouts & retransmissions
2010-01-17 19:09:39 -08:00
rose.h
NET: ROSE: Don't use static buffer.
2009-07-26 19:11:14 -07:00
route.h
ipv4: Flush per-ns routing cache more sanely.
2010-12-20 10:37:19 -08:00
rtnetlink.h
rtnl: make link af-specific updates atomic
2010-11-27 22:56:08 -08:00
sch_generic.h
net_sched: long word align struct qdisc_skb_cb data
2011-02-23 14:17:02 -08:00
scm.h
scm: lower SCM_MAX_FD
2010-11-24 11:16:43 -08:00
slhc_vj.h
…
snmp.h
net: kill unused macros from head file
2010-12-02 13:27:33 -08:00
sock.h
net: Add compat ioctl support for the ipv4 multicast ioctl SIOCGETSGCNT
2011-01-30 01:14:38 -08:00
stp.h
…
tcp_states.h
…
tcp.h
TCP: increase default initial receive window.
2010-12-20 21:33:00 -08:00
timewait_sock.h
timewait_sock: Create and use getpeer op.
2010-12-01 18:09:13 -08:00
transp_v6.h
IPv6: Add dontfrag argument to relevant functions
2010-04-23 23:35:28 -07:00
udp.h
net: avoid limits overflow
2010-11-10 12:12:00 -08:00
udplite.h
…
wext.h
wext: refactor
2009-10-07 16:39:43 -04:00
wimax.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2009-12-09 19:43:33 -08:00
wpan-phy.h
ieee802154: add support for creation/removal of logic interfaces
2009-11-06 14:32:24 +03:00
x25.h
X25 remove bkl in subscription ioctls
2010-11-28 11:12:20 -08:00
x25device.h
X25: Add if_x25.h and x25 to device identifiers
2010-04-22 16:12:36 -07:00
xfrm.h
xfrm: Add Traffic Flow Confidentiality padding XFRM attribute
2010-12-10 14:43:58 -08:00