# Copyright 2018 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

# AF_RDS support.

include <linux/socket.h>
include <linux/net.h>
include <uapi/linux/in6.h>
include <uapi/linux/rds.h>

resource sock_rds[sock]

socket$rds(domain const[AF_RDS], type const[SOCK_SEQPACKET], proto const[0]) sock_rds
bind$rds(fd sock_rds, addr ptr[in, sockaddr_in], addrlen len[addr])
connect$rds(fd sock_rds, addr ptr[in, sockaddr_in], addrlen len[addr])
sendmsg$rds(fd sock_rds, msg ptr[in, msghdr_rds], f flags[send_flags])

setsockopt$RDS_CANCEL_SENT_TO(fd sock_rds, level const[SOL_RDS], opt const[RDS_CANCEL_SENT_TO], val ptr[in, sockaddr_in], len len[val])
setsockopt$RDS_GET_MR(fd sock_rds, level const[SOL_RDS], opt const[RDS_GET_MR], val ptr[in, rds_get_mr_args], len len[val])
setsockopt$RDS_GET_MR_FOR_DEST(fd sock_rds, level const[SOL_RDS], opt const[RDS_GET_MR_FOR_DEST], val ptr[in, rds_get_mr_for_dest_args], len len[val])
setsockopt$RDS_FREE_MR(fd sock_rds, level const[SOL_RDS], opt const[RDS_FREE_MR], val ptr[in, rds_free_mr_args], len len[val])
setsockopt$RDS_RECVERR(fd sock_rds, level const[SOL_RDS], opt const[RDS_RECVERR], val ptr[in, bool32], len len[val])
setsockopt$RDS_CONG_MONITOR(fd sock_rds, level const[SOL_RDS], opt const[RDS_CONG_MONITOR], val ptr[in, bool32], len len[val])
setsockopt$SO_RDS_TRANSPORT(fd sock_rds, level const[SOL_RDS], opt const[SO_RDS_TRANSPORT], val ptr[in, flags[rds_transport, int32]], len len[val])
setsockopt$SO_RDS_MSG_RXPATH_LATENCY(fd sock_rds, level const[SOL_RDS], opt const[SO_RDS_MSG_RXPATH_LATENCY], val ptr[in, rds_rx_trace_so], len len[val])

msghdr_rds {
	addr	ptr[in, sockaddr_in, opt]
	addrlen	len[addr, int32]
	vec	ptr[in, array[iovec[out, array[int8]]]]
	vlen	len[vec, intptr]
	ctrl	ptr[in, array[cmsghdr_rds], opt]
	ctrllen	bytesize[ctrl, intptr]
	f	flags[send_flags, int32]
}

cmsghdr_rds [
	rdma_args	cmsghdr_rds_t[RDS_CMSG_RDMA_ARGS, rds_rdma_args]
	rdma_dest	cmsghdr_rds_t[RDS_CMSG_RDMA_DEST, rds_rdma_cookie_t]
	rdma_map	cmsghdr_rds_t[RDS_CMSG_RDMA_MAP, rds_get_mr_args]
	fadd		cmsghdr_rds_t[RDS_CMSG_ATOMIC_FADD, rds_atomic_args]
	cswp		cmsghdr_rds_t[RDS_CMSG_ATOMIC_CSWP, rds_atomic_args]
	mask_fadd	cmsghdr_rds_t[RDS_CMSG_MASKED_ATOMIC_FADD, rds_atomic_args]
	mask_cswp	cmsghdr_rds_t[RDS_CMSG_MASKED_ATOMIC_CSWP, rds_atomic_args]
	zcopy_cookie	cmsghdr_rds_t[RDS_CMSG_ZCOPY_COOKIE, int32]
] [varlen]

type cmsghdr_rds_t[TYPE, DATA] {
	cmsg_len	len[parent, intptr]
	cmsg_level	const[SOL_RDS, int32]
	cmsg_type	const[TYPE, int32]
	data		DATA
} [align_ptr]

rds_rdma_args {
	cookie		rds_rdma_cookie_t
	remote_vec	rds_iovec
	local_vec	ptr64[in, array[rds_iovec]]
	nr_local	len[local_vec, int64]
	flags		flags[rds_rdma_flags, int64]
	user_token	int64
}

rds_atomic_args {
	cookie		rds_rdma_cookie_t
	local_addr	ptr64[in, int64]
	remote_addr	ptr64[in, int64]
	arg1		int64
	arg2		int64
	mask1		int64
	mask2		int64
	flags		flags[rds_rdma_flags, int64]
	user_token	int64
}

rds_get_mr_args {
	vec		rds_iovec
	cookie_addr	ptr[out, int8]
	flags		flags[rds_rdma_flags, int64]
}

rds_get_mr_for_dest_args {
	dest_addr	sockaddr_storage
	vec		rds_iovec
	cookie_addr	ptr[out, int8]
	flags		flags[rds_rdma_flags, int64]
} [packed]

rds_free_mr_args {
	cookie	rds_rdma_cookie_t
	flags	flags[rds_rdma_flags, int64]
}

rds_rx_trace_so {
	rx_traces	len[rx_trace_pos, int8]
	rx_trace_pos	array[int8, 0:RDS_MSG_RX_DGRAM_TRACE_MAX]
}

rds_iovec {
	addr	ptr64[out, array[int8]]
	bytes	len[addr, int64]
}

rds_rdma_cookie_t {
# This should be a resource, but it's unclear how to obtain it.
	key	int32
	off	int32
} [align_8]

rds_transport = RDS_TRANS_IB, RDS_TRANS_IWARP, RDS_TRANS_TCP, RDS_TRANS_NONE
rds_rdma_flags = RDS_RDMA_READWRITE, RDS_RDMA_FENCE, RDS_RDMA_INVALIDATE, RDS_RDMA_USE_ONCE, RDS_RDMA_DONTWAIT, RDS_RDMA_NOTIFY_ME, RDS_RDMA_SILENT