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📄 a.out.h(7.15 KB)
📄 acct.h(3.58 KB)
📄 adb.h(1.05 KB)
📄 adfs_fs.h(873 B)
📄 affs_hardblocks.h(1.45 KB)
📄 agpgart.h(3.83 KB)
📄 aio_abi.h(3.1 KB)
📄 apm_bios.h(3.46 KB)
📄 arcfb.h(150 B)
📄 atalk.h(960 B)
📄 atm.h(7.64 KB)
📄 atm_eni.h(585 B)
📄 atm_he.h(343 B)
📄 atm_idt77105.h(892 B)
📄 atm_nicstar.h(1.19 KB)
📄 atm_tcp.h(1.52 KB)
📄 atm_zatm.h(1.57 KB)
📄 atmapi.h(889 B)
📄 atmarp.h(1.2 KB)
📄 atmbr2684.h(3.13 KB)
📄 atmclip.h(513 B)
📄 atmdev.h(7.44 KB)
📄 atmioc.h(1.55 KB)
📄 atmlec.h(2.26 KB)
📄 atmmpc.h(4.07 KB)
📄 atmppp.h(576 B)
📄 atmsap.h(4.79 KB)
📄 atmsvc.h(1.75 KB)
📄 audit.h(18.03 KB)
📄 auto_fs.h(2.53 KB)
📄 auto_fs4.h(4.3 KB)
📄 auxvec.h(1.4 KB)
📄 ax25.h(2.7 KB)
📄 b1lli.h(1.62 KB)
📄 baycom.h(820 B)
📄 bfs_fs.h(1.79 KB)
📄 binfmts.h(565 B)
📄 blkpg.h(1.53 KB)
📄 blktrace_api.h(4.38 KB)
📄 bpf.h(22.04 KB)
📄 bpf_common.h(1.2 KB)
📄 bpf_perf_event.h(453 B)
📄 bpqether.h(952 B)
📄 bsg.h(2.37 KB)
📄 bt-bmc.h(508 B)
📄 btrfs.h(25.07 KB)
📁 byteorder
📁 caif
📁 can
📄 can.h(5.46 KB)
📄 capability.h(11.25 KB)
📄 capi.h(2.99 KB)
📄 cciss_defs.h(3.14 KB)
📄 cciss_ioctl.h(2.63 KB)
📄 cdrom.h(28.12 KB)
📄 cgroupstats.h(2.1 KB)
📄 chio.h(5.16 KB)
📄 cm4000_cs.h(1.68 KB)
📄 cn_proc.h(3.19 KB)
📄 coda.h(17.09 KB)
📄 coda_psdev.h(720 B)
📄 coff.h(12.12 KB)
📄 connector.h(2.14 KB)
📄 const.h(673 B)
📄 cramfs_fs.h(2.68 KB)
📄 cuda.h(842 B)
📄 cyclades.h(16.65 KB)
📄 cycx_cfm.h(2.86 KB)
📄 dcbnl.h(24.5 KB)
📄 dccp.h(6.22 KB)
📄 devlink.h(9.66 KB)
📄 dlm.h(2.43 KB)
📄 dlm_device.h(2.42 KB)
📄 dlm_netlink.h(1.04 KB)
📄 dlm_plock.h(831 B)
📄 dlmconstants.h(4.9 KB)
📄 dm-ioctl.h(10.55 KB)
📄 dm-log-userspace.h(14.82 KB)
📄 dn.h(4.42 KB)
📄 dqblk_xfs.h(8.72 KB)
📁 dvb
📄 edd.h(5.41 KB)
📄 efs_fs_sb.h(2.11 KB)
📄 elf-em.h(1.83 KB)
📄 elf-fdpic.h(1.04 KB)
📄 elf.h(12.69 KB)
📄 elfcore.h(2.86 KB)
📄 errno.h(23 B)
📄 errqueue.h(1.1 KB)
📄 ethtool.h(71.11 KB)
📄 eventpoll.h(1.76 KB)
📄 fadvise.h(779 B)
📄 falloc.h(2.72 KB)
📄 fanotify.h(3.52 KB)
📄 fb.h(16 KB)
📄 fcntl.h(2.16 KB)
📄 fd.h(11.31 KB)
📄 fdreg.h(5.23 KB)
📄 fib_rules.h(1.58 KB)
📄 fiemap.h(2.65 KB)
📄 filter.h(1.99 KB)
📄 firewire-cdev.h(42.86 KB)
📄 firewire-constants.h(3.16 KB)
📄 flat.h(2.04 KB)
📄 fou.h(617 B)
📄 fs.h(8.47 KB)
📄 fsl_hypervisor.h(7.05 KB)
📄 fuse.h(16.41 KB)
📄 futex.h(4.81 KB)
📄 gameport.h(834 B)
📄 gen_stats.h(1.5 KB)
📄 genetlink.h(1.82 KB)
📄 gfs2_ondisk.h(12 KB)
📄 gigaset_dev.h(1.35 KB)
📁 hdlc
📄 hdlc.h(574 B)
📄 hdlcdrv.h(2.78 KB)
📄 hdreg.h(22.11 KB)
📄 hid.h(1.79 KB)
📄 hiddev.h(6.13 KB)
📄 hidraw.h(1.41 KB)
📄 hpet.h(680 B)
📁 hsi
📄 hw_breakpoint.h(679 B)
📄 hyperv.h(10.22 KB)
📄 hysdn_if.h(1.29 KB)
📄 i2c-dev.h(2.37 KB)
📄 i2c.h(6.66 KB)
📄 i2o-dev.h(11.22 KB)
📄 i8k.h(1.4 KB)
📄 icmp.h(2.82 KB)
📄 icmpv6.h(3.82 KB)
📄 if.h(9.26 KB)
📄 if_addr.h(1.7 KB)
📄 if_addrlabel.h(658 B)
📄 if_alg.h(816 B)
📄 if_arcnet.h(3.63 KB)
📄 if_arp.h(6.3 KB)
📄 if_bonding.h(4.66 KB)
📄 if_bridge.h(6.46 KB)
📄 if_cablemodem.h(922 B)
📄 if_eql.h(1.26 KB)
📄 if_ether.h(7.25 KB)
📄 if_fc.h(1.63 KB)
📄 if_fddi.h(3.6 KB)
📄 if_frad.h(2.89 KB)
📄 if_hippi.h(4.07 KB)
📄 if_infiniband.h(1.13 KB)
📄 if_link.h(19.58 KB)
📄 if_ltalk.h(147 B)
📄 if_macsec.h(5.42 KB)
📄 if_packet.h(7.15 KB)
📄 if_phonet.h(361 B)
📄 if_plip.h(596 B)
📄 if_ppp.h(29 B)
📄 if_pppol2tp.h(3.18 KB)
📄 if_pppox.h(4.64 KB)
📄 if_slip.h(809 B)
📄 if_team.h(2.48 KB)
📄 if_tun.h(3.71 KB)
📄 if_tunnel.h(3.03 KB)
📄 if_vlan.h(1.69 KB)
📄 if_x25.h(817 B)
📄 ife.h(288 B)
📄 igmp.h(2.88 KB)
📁 iio
📄 in.h(9.36 KB)
📄 in6.h(6.97 KB)
📄 in_route.h(873 B)
📄 inet_diag.h(2.77 KB)
📄 inotify.h(2.85 KB)
📄 input.h(32.52 KB)
📄 ioctl.h(100 B)
📄 ip.h(3.47 KB)
📄 ip6_tunnel.h(1.67 KB)
📄 ip_vs.h(12.77 KB)
📄 ipc.h(1.99 KB)
📄 ipmi.h(14.63 KB)
📄 ipmi_msgdefs.h(3.21 KB)
📄 ipsec.h(884 B)
📄 ipv6.h(3.66 KB)
📄 ipv6_route.h(1.73 KB)
📄 ipx.h(1.79 KB)
📄 irda.h(7.31 KB)
📄 irqnr.h(104 B)
📁 isdn
📄 isdn.h(5.58 KB)
📄 isdn_divertif.h(1.11 KB)
📄 isdn_ppp.h(1.82 KB)
📄 isdnif.h(2.25 KB)
📄 iso_fs.h(6.29 KB)
📄 ivtv.h(2.89 KB)
📄 ivtvfb.h(1.12 KB)
📄 ixjuser.h(24.53 KB)
📄 jffs2.h(6.85 KB)
📄 joystick.h(3.5 KB)
📄 kd.h(6.04 KB)
📄 kdev_t.h(320 B)
📄 kernel-page-flags.h(788 B)
📄 kernel.h(375 B)
📄 kernelcapi.h(956 B)
📄 kexec.h(1.92 KB)
📄 keyboard.h(12.42 KB)
📄 keyctl.h(2.98 KB)
📄 kvm.h(33.89 KB)
📄 kvm_para.h(819 B)
📄 l2tp.h(4.98 KB)
📄 libc-compat.h(4.03 KB)
📄 limits.h(874 B)
📄 llc.h(2.98 KB)
📄 loop.h(2.31 KB)
📄 lp.h(3.72 KB)
📄 lwtunnel.h(839 B)
📄 magic.h(2.9 KB)
📄 major.h(4.48 KB)
📄 map_to_7segment.h(7.02 KB)
📄 matroxfb.h(1.37 KB)
📄 mdio.h(13.74 KB)
📄 media.h(3.5 KB)
📄 mei.h(4.62 KB)
📄 membarrier.h(7.71 KB)
📄 memfd.h(186 B)
📄 mempolicy.h(2.35 KB)
📄 meye.h(2.41 KB)
📄 mii.h(7.76 KB)
📄 minix_fs.h(2.01 KB)
📄 mman.h(230 B)
📁 mmc
📄 mmtimer.h(2.01 KB)
📄 mpls.h(1.33 KB)
📄 mqueue.h(2.01 KB)
📄 mroute.h(4.06 KB)
📄 mroute6.h(4.08 KB)
📄 msdos_fs.h(6.28 KB)
📄 msg.h(3.21 KB)
📄 mtio.h(7.92 KB)
📄 n_r3964.h(2.29 KB)
📄 nbd.h(2.34 KB)
📄 ncp.h(4.94 KB)
📄 ncp_fs.h(3.27 KB)
📄 ncp_mount.h(2.06 KB)
📄 ncp_no.h(651 B)
📄 ndctl.h(6.6 KB)
📄 neighbour.h(4.17 KB)
📄 net.h(1.97 KB)
📄 net_dropmon.h(1.07 KB)
📄 net_namespace.h(609 B)
📄 net_tstamp.h(4.06 KB)
📄 netconf.h(423 B)
📄 netdevice.h(1.46 KB)
📁 netfilter
📄 netfilter.h(1.6 KB)
📁 netfilter_arp
📄 netfilter_arp.h(380 B)
📁 netfilter_bridge
📄 netfilter_bridge.h(768 B)
📄 netfilter_decnet.h(1.83 KB)
📁 netfilter_ipv4
📄 netfilter_ipv4.h(2.02 KB)
📁 netfilter_ipv6
📄 netfilter_ipv6.h(2.04 KB)
📄 netlink.h(6.13 KB)
📄 netlink_diag.h(1005 B)
📄 netrom.h(744 B)
📄 nfc.h(7.72 KB)
📄 nfs.h(4.31 KB)
📄 nfs2.h(1.37 KB)
📄 nfs3.h(2.24 KB)
📄 nfs4.h(5.95 KB)
📄 nfs4_mount.h(1.83 KB)
📄 nfs_fs.h(1.51 KB)
📄 nfs_idmap.h(2.19 KB)
📄 nfs_mount.h(2.32 KB)
📄 nfsacl.h(605 B)
📁 nfsd
📄 nl80211.h(270.89 KB)
📄 nubus.h(8.17 KB)
📄 nvme_ioctl.h(1.55 KB)
📄 nvram.h(469 B)
📄 omap3isp.h(20.19 KB)
📄 omapfb.h(5.72 KB)
📄 oom.h(448 B)
📄 openvswitch.h(31.79 KB)
📄 packet_diag.h(1.5 KB)
📄 param.h(78 B)
📄 parport.h(3.56 KB)
📄 patchkey.h(829 B)
📄 pci.h(1.29 KB)
📄 pci_regs.h(50.79 KB)
📄 perf_event.h(31.96 KB)
📄 personality.h(1.99 KB)
📄 pfkeyv2.h(9.91 KB)
📄 pg.h(2.23 KB)
📄 phantom.h(1.55 KB)
📄 phonet.h(4.51 KB)
📄 pkt_cls.h(12.49 KB)
📄 pkt_sched.h(20.63 KB)
📄 pktcdvd.h(2.56 KB)
📄 pmu.h(5.13 KB)
📄 poll.h(22 B)
📄 posix_types.h(1.01 KB)
📄 ppdev.h(3.07 KB)
📄 ppp-comp.h(2.41 KB)
📄 ppp-ioctl.h(5.29 KB)
📄 ppp_defs.h(4.93 KB)
📄 pps.h(4.06 KB)
📄 prctl.h(6.75 KB)
📄 psample.h(735 B)
📄 ptp_clock.h(5.09 KB)
📄 ptrace.h(3.08 KB)
📄 qnx4_fs.h(2.21 KB)
📄 qnxtypes.h(561 B)
📄 quota.h(5.78 KB)
📄 radeonfb.h(297 B)
📁 raid
📄 random.h(1.2 KB)
📄 raw.h(302 B)
📄 rds.h(7.9 KB)
📄 reboot.h(1.25 KB)
📄 reiserfs_fs.h(712 B)
📄 reiserfs_xattr.h(470 B)
📄 resource.h(2.09 KB)
📄 rfkill.h(3.5 KB)
📄 romfs_fs.h(1.15 KB)
📄 rose.h(2.12 KB)
📄 route.h(2.21 KB)
📄 rtc.h(3.85 KB)
📄 rtnetlink.h(17.02 KB)
📄 scc.h(4.43 KB)
📄 sched.h(2.26 KB)
📄 screen_info.h(2.36 KB)
📄 sctp.h(29.53 KB)
📄 sdla.h(2.71 KB)
📄 seccomp.h(1.83 KB)
📄 securebits.h(2.58 KB)
📄 selinux_netlink.h(1.11 KB)
📄 sem.h(2.54 KB)
📄 serial.h(3.04 KB)
📄 serial_core.h(5.11 KB)
📄 serial_reg.h(15.66 KB)
📄 serio.h(1.81 KB)
📄 shm.h(2.19 KB)
📄 signal.h(171 B)
📄 signalfd.h(1.07 KB)
📄 snmp.h(12.42 KB)
📄 sock_diag.h(431 B)
📄 socket.h(738 B)
📄 sockios.h(5.83 KB)
📄 som.h(5.35 KB)
📄 sonet.h(2.17 KB)
📄 sonypi.h(5.12 KB)
📄 sound.h(1.15 KB)
📄 soundcard.h(44.96 KB)
📁 spi
📄 stat.h(1 KB)
📄 stddef.h(1 B)
📄 string.h(175 B)
📁 sunrpc
📄 suspend_ioctls.h(1.34 KB)
📄 swab.h(6.36 KB)
📄 synclink.h(8.71 KB)
📄 sysctl.h(25.46 KB)
📄 sysinfo.h(986 B)
📄 target_core_user.h(3.65 KB)
📄 taskstats.h(6.83 KB)
📁 tc_act
📁 tc_ematch
📄 tcp.h(5.93 KB)
📄 tcp_metrics.h(1.45 KB)
📄 telephony.h(8.84 KB)
📄 termios.h(443 B)
📄 time.h(1.54 KB)
📄 times.h(215 B)
📄 timex.h(6.17 KB)
📄 tiocl.h(1.63 KB)
📄 tipc.h(5.44 KB)
📄 tipc_config.h(14.1 KB)
📄 toshiba.h(1.24 KB)
📄 tty.h(1.33 KB)
📄 tty_flags.h(3.66 KB)
📄 types.h(1.4 KB)
📄 udf_fs_i.h(634 B)
📄 udp.h(1.28 KB)
📄 uhid.h(2.15 KB)
📄 uinput.h(5 KB)
📄 uio.h(668 B)
📄 ultrasound.h(4.39 KB)
📄 un.h(239 B)
📄 unistd.h(157 B)
📄 unix_diag.h(1.1 KB)
📁 usb
📄 usbdevice_fs.h(6.78 KB)
📄 userfaultfd.h(6.59 KB)
📄 utime.h(152 B)
📄 utsname.h(606 B)
📄 uuid.h(1.5 KB)
📄 uvcvideo.h(1.6 KB)
📄 v4l2-common.h(2.38 KB)
📄 v4l2-controls.h(37.34 KB)
📄 v4l2-dv-timings.h(25.75 KB)
📄 v4l2-mediabus.h(4.55 KB)
📄 v4l2-subdev.h(5.27 KB)
📄 version.h(332 B)
📄 veth.h(161 B)
📄 vfio.h(26.54 KB)
📄 vhost.h(7.13 KB)
📄 videodev2.h(67.36 KB)
📄 virtio_9p.h(1.99 KB)
📄 virtio_balloon.h(3.71 KB)
📄 virtio_blk.h(5.2 KB)
📄 virtio_config.h(3.34 KB)
📄 virtio_console.h(2.94 KB)
📄 virtio_gpu.h(8.23 KB)
📄 virtio_ids.h(2.32 KB)
📄 virtio_input.h(2.45 KB)
📄 virtio_net.h(9.5 KB)
📄 virtio_pci.h(6.63 KB)
📄 virtio_ring.h(6.18 KB)
📄 virtio_rng.h(265 B)
📄 virtio_scsi.h(5.13 KB)
📄 virtio_types.h(2.11 KB)
📄 virtio_vsock.h(3.01 KB)
📄 vm_sockets.h(5.13 KB)
📄 vsockmon.h(1.78 KB)
📄 vt.h(2.98 KB)
📄 vtpm_proxy.h(1.62 KB)
📄 wait.h(600 B)
📄 wanrouter.h(390 B)
📄 watchdog.h(2.22 KB)
📁 wimax
📄 wimax.h(8.17 KB)
📄 wireless.h(41.65 KB)
📄 wmi.h(1.84 KB)
📄 x25.h(3.42 KB)
📄 xattr.h(2.53 KB)
📄 xfrm.h(11 KB)

Editing: rds.h

/*
 * Copyright (c) 2008 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef _LINUX_RDS_H
#define _LINUX_RDS_H

#include <linux/types.h>

#define RDS_IB_ABI_VERSION		0x301

#define	SOL_RDS		276

/*
 * setsockopt/getsockopt for SOL_RDS
 */
#define RDS_CANCEL_SENT_TO      	1
#define RDS_GET_MR			2
#define RDS_FREE_MR			3
/* deprecated: RDS_BARRIER 4 */
#define RDS_RECVERR			5
#define RDS_CONG_MONITOR		6
#define RDS_GET_MR_FOR_DEST		7
#define SO_RDS_TRANSPORT		8

/* supported values for SO_RDS_TRANSPORT */
#define	RDS_TRANS_IB	0
#define	RDS_TRANS_IWARP	1
#define	RDS_TRANS_TCP	2
#define RDS_TRANS_COUNT	3
#define	RDS_TRANS_NONE	(~0)

/*
 * Control message types for SOL_RDS.
 *
 * CMSG_RDMA_ARGS (sendmsg)
 *	Request a RDMA transfer to/from the specified
 *	memory ranges.
 *	The cmsg_data is a struct rds_rdma_args.
 * RDS_CMSG_RDMA_DEST (recvmsg, sendmsg)
 *	Kernel informs application about intended
 *	source/destination of a RDMA transfer
 * RDS_CMSG_RDMA_MAP (sendmsg)
 *	Application asks kernel to map the given
 *	memory range into a IB MR, and send the
 *	R_Key along in an RDS extension header.
 *	The cmsg_data is a struct rds_get_mr_args,
 *	the same as for the GET_MR setsockopt.
 * RDS_CMSG_RDMA_STATUS (recvmsg)
 *	Returns the status of a completed RDMA operation.
 */
#define RDS_CMSG_RDMA_ARGS		1
#define RDS_CMSG_RDMA_DEST		2
#define RDS_CMSG_RDMA_MAP		3
#define RDS_CMSG_RDMA_STATUS		4
#define RDS_CMSG_CONG_UPDATE		5
#define RDS_CMSG_ATOMIC_FADD		6
#define RDS_CMSG_ATOMIC_CSWP		7
#define RDS_CMSG_MASKED_ATOMIC_FADD	8
#define RDS_CMSG_MASKED_ATOMIC_CSWP	9

#define RDS_INFO_FIRST			10000
#define RDS_INFO_COUNTERS		10000
#define RDS_INFO_CONNECTIONS		10001
/* 10002 aka RDS_INFO_FLOWS is deprecated */
#define RDS_INFO_SEND_MESSAGES		10003
#define RDS_INFO_RETRANS_MESSAGES       10004
#define RDS_INFO_RECV_MESSAGES          10005
#define RDS_INFO_SOCKETS                10006
#define RDS_INFO_TCP_SOCKETS            10007
#define RDS_INFO_IB_CONNECTIONS		10008
#define RDS_INFO_CONNECTION_STATS	10009
#define RDS_INFO_IWARP_CONNECTIONS	10010
#define RDS_INFO_LAST			10010

struct rds_info_counter {
	uint8_t	name[32];
	uint64_t	value;
} __attribute__((packed));

#define RDS_INFO_CONNECTION_FLAG_SENDING	0x01
#define RDS_INFO_CONNECTION_FLAG_CONNECTING	0x02
#define RDS_INFO_CONNECTION_FLAG_CONNECTED	0x04

#define TRANSNAMSIZ	16

struct rds_info_connection {
	uint64_t	next_tx_seq;
	uint64_t	next_rx_seq;
	__be32		laddr;
	__be32		faddr;
	uint8_t	transport[TRANSNAMSIZ];		/* null term ascii */
	uint8_t	flags;
} __attribute__((packed));

#define RDS_INFO_MESSAGE_FLAG_ACK               0x01
#define RDS_INFO_MESSAGE_FLAG_FAST_ACK          0x02

struct rds_info_message {
	uint64_t	seq;
	uint32_t	len;
	__be32		laddr;
	__be32		faddr;
	__be16		lport;
	__be16		fport;
	uint8_t	flags;
} __attribute__((packed));

struct rds_info_socket {
	uint32_t	sndbuf;
	__be32		bound_addr;
	__be32		connected_addr;
	__be16		bound_port;
	__be16		connected_port;
	uint32_t	rcvbuf;
	uint64_t	inum;
} __attribute__((packed));

struct rds_info_tcp_socket {
	__be32          local_addr;
	__be16          local_port;
	__be32          peer_addr;
	__be16          peer_port;
	uint64_t       hdr_rem;
	uint64_t       data_rem;
	uint32_t       last_sent_nxt;
	uint32_t       last_expected_una;
	uint32_t       last_seen_una;
} __attribute__((packed));

#define RDS_IB_GID_LEN	16
struct rds_info_rdma_connection {
	__be32		src_addr;
	__be32		dst_addr;
	uint8_t		src_gid[RDS_IB_GID_LEN];
	uint8_t		dst_gid[RDS_IB_GID_LEN];

uint32_t	max_send_wr;
	uint32_t	max_recv_wr;
	uint32_t	max_send_sge;
	uint32_t	rdma_mr_max;
	uint32_t	rdma_mr_size;
};

/*
 * Congestion monitoring.
 * Congestion control in RDS happens at the host connection
 * level by exchanging a bitmap marking congested ports.
 * By default, a process sleeping in poll() is always woken
 * up when the congestion map is updated.
 * With explicit monitoring, an application can have more
 * fine-grained control.
 * The application installs a 64bit mask value in the socket,
 * where each bit corresponds to a group of ports.
 * When a congestion update arrives, RDS checks the set of
 * ports that are now uncongested against the list bit mask
 * installed in the socket, and if they overlap, we queue a
 * cong_notification on the socket.
 *
 * To install the congestion monitor bitmask, use RDS_CONG_MONITOR
 * with the 64bit mask.
 * Congestion updates are received via RDS_CMSG_CONG_UPDATE
 * control messages.
 *
 * The correspondence between bits and ports is
 *	1 << (portnum % 64)
 */
#define RDS_CONG_MONITOR_SIZE	64
#define RDS_CONG_MONITOR_BIT(port)  (((unsigned int) port) % RDS_CONG_MONITOR_SIZE)
#define RDS_CONG_MONITOR_MASK(port) (1ULL << RDS_CONG_MONITOR_BIT(port))

/*
 * RDMA related types
 */

/*
 * This encapsulates a remote memory location.
 * In the current implementation, it contains the R_Key
 * of the remote memory region, and the offset into it
 * (so that the application does not have to worry about
 * alignment).
 */
typedef uint64_t	rds_rdma_cookie_t;

struct rds_iovec {
	uint64_t	addr;
	uint64_t	bytes;
};

struct rds_get_mr_args {
	struct rds_iovec vec;
	uint64_t	cookie_addr;
	uint64_t	flags;
};

struct rds_get_mr_for_dest_args {
	struct sockaddr_storage	dest_addr;
	struct rds_iovec 	vec;
	uint64_t		cookie_addr;
	uint64_t		flags;
};

struct rds_free_mr_args {
	rds_rdma_cookie_t cookie;
	uint64_t	flags;
};

struct rds_rdma_args {
	rds_rdma_cookie_t cookie;
	struct rds_iovec remote_vec;
	uint64_t	local_vec_addr;
	uint64_t	nr_local;
	uint64_t	flags;
	uint64_t	user_token;
};

struct rds_atomic_args {
	rds_rdma_cookie_t cookie;
	uint64_t 	local_addr;
	uint64_t 	remote_addr;
	union {
		struct {
			uint64_t	compare;
			uint64_t	swap;
		} cswp;
		struct {
			uint64_t	add;
		} fadd;
		struct {
			uint64_t	compare;
			uint64_t	swap;
			uint64_t	compare_mask;
			uint64_t	swap_mask;
		} m_cswp;
		struct {
			uint64_t	add;
			uint64_t	nocarry_mask;
		} m_fadd;
	};
	uint64_t	flags;
	uint64_t	user_token;
};

struct rds_rdma_notify {
	uint64_t	user_token;
	int32_t		status;
};

#define RDS_RDMA_SUCCESS	0
#define RDS_RDMA_REMOTE_ERROR	1
#define RDS_RDMA_CANCELED	2
#define RDS_RDMA_DROPPED	3
#define RDS_RDMA_OTHER_ERROR	4

/*
 * Common set of flags for all RDMA related structs
 */
#define RDS_RDMA_READWRITE	0x0001
#define RDS_RDMA_FENCE		0x0002	/* use FENCE for immediate send */
#define RDS_RDMA_INVALIDATE	0x0004	/* invalidate R_Key after freeing MR */
#define RDS_RDMA_USE_ONCE	0x0008	/* free MR after use */
#define RDS_RDMA_DONTWAIT	0x0010	/* Don't wait in SET_BARRIER */
#define RDS_RDMA_NOTIFY_ME	0x0020	/* Notify when operation completes */
#define RDS_RDMA_SILENT		0x0040	/* Do not interrupt remote */

#endif /* IB_RDS_H */

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