^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2006, 2019 Oracle and/or its affiliates. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This software is available to you under a choice of one of two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * licenses. You may choose to be licensed under the terms of the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * General Public License (GPL) Version 2, available from the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * COPYING in the main directory of this source tree, or the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * OpenIB.org BSD license below:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Redistribution and use in source and binary forms, with or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * without modification, are permitted provided that the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * conditions are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * - Redistributions of source code must retain the above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * copyright notice, this list of conditions and the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * - Redistributions in binary form must reproduce the above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * copyright notice, this list of conditions and the following
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * disclaimer in the documentation and/or other materials
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include "rds.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* this is just used for stats gathering :/ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static DEFINE_SPINLOCK(rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static unsigned long rds_sock_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static LIST_HEAD(rds_sock_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) DECLARE_WAIT_QUEUE_HEAD(rds_poll_waitq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * This is called as the final descriptor referencing this socket is closed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * We have to unbind the socket so that another socket can be bound to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * address it was using.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * We have to be careful about racing with the incoming path. sock_orphan()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * sets SOCK_DEAD and we use that as an indicator to the rx path that new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * messages shouldn't be queued.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int rds_release(struct socket *sock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) rs = rds_sk_to_rs(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sock_orphan(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Note - rds_clear_recv_queue grabs rs_recv_lock, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * that ensures the recv path has completed messing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * with the socket. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) rds_clear_recv_queue(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) rds_cong_remove_socket(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) rds_remove_bound(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) rds_send_drop_to(rs, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) rds_rdma_drop_keys(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) rds_notify_queue_get(rs, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) rds_notify_msg_zcopy_purge(&rs->rs_zcookie_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) list_del_init(&rs->rs_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) rds_sock_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) rds_trans_put(rs->rs_transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) sock->sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * Careful not to race with rds_release -> sock_orphan which clears sk_sleep.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * _bh() isn't OK here, we're called from interrupt handlers. It's probably OK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * to wake the waitqueue after sk_sleep is clear as we hold a sock ref, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * this seems more conservative.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * NB - normally, one would use sk_callback_lock for this, but we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * get here from interrupts, whereas the network code grabs sk_callback_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * with _lock_bh only - so relying on sk_callback_lock introduces livelocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) void rds_wake_sk_sleep(struct rds_sock *rs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) read_lock_irqsave(&rs->rs_recv_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) __rds_wake_sk_sleep(rds_rs_to_sk(rs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) read_unlock_irqrestore(&rs->rs_recv_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int peer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct rds_sock *rs = rds_sk_to_rs(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct sockaddr_in6 *sin6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct sockaddr_in *sin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int uaddr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* racey, don't care */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (peer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (ipv6_addr_any(&rs->rs_conn_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (ipv6_addr_v4mapped(&rs->rs_conn_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) sin = (struct sockaddr_in *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) sin->sin_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) sin->sin_port = rs->rs_conn_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) sin->sin_addr.s_addr = rs->rs_conn_addr_v4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) uaddr_len = sizeof(*sin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) sin6 = (struct sockaddr_in6 *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) sin6->sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sin6->sin6_port = rs->rs_conn_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) sin6->sin6_addr = rs->rs_conn_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) sin6->sin6_flowinfo = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* scope_id is the same as in the bound address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) sin6->sin6_scope_id = rs->rs_bound_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) uaddr_len = sizeof(*sin6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* If socket is not yet bound and the socket is connected,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * set the return address family to be the same as the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * connected address, but with 0 address value. If it is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * connected, set the family to be AF_UNSPEC (value 0) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * the address size to be that of an IPv4 address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (ipv6_addr_any(&rs->rs_bound_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (ipv6_addr_any(&rs->rs_conn_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) sin = (struct sockaddr_in *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) memset(sin, 0, sizeof(*sin));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) sin->sin_family = AF_UNSPEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return sizeof(*sin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (!(ipv6_addr_type(&rs->rs_conn_addr) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) IPV6_ADDR_MAPPED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) sin6 = (struct sockaddr_in6 *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) memset(sin6, 0, sizeof(*sin6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) sin6->sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return sizeof(*sin6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) sin = (struct sockaddr_in *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) memset(sin, 0, sizeof(*sin));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) sin->sin_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return sizeof(*sin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (ipv6_addr_v4mapped(&rs->rs_bound_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) sin = (struct sockaddr_in *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) sin->sin_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) sin->sin_port = rs->rs_bound_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sin->sin_addr.s_addr = rs->rs_bound_addr_v4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) uaddr_len = sizeof(*sin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) sin6 = (struct sockaddr_in6 *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) sin6->sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) sin6->sin6_port = rs->rs_bound_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) sin6->sin6_addr = rs->rs_bound_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) sin6->sin6_flowinfo = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) sin6->sin6_scope_id = rs->rs_bound_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) uaddr_len = sizeof(*sin6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return uaddr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * RDS' poll is without a doubt the least intuitive part of the interface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * as EPOLLIN and EPOLLOUT do not behave entirely as you would expect from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * a network protocol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * EPOLLIN is asserted if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * - there is data on the receive queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * - to signal that a previously congested destination may have become
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * uncongested
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * - A notification has been queued to the socket (this can be a congestion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * update, or a RDMA completion, or a MSG_ZEROCOPY completion).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * EPOLLOUT is asserted if there is room on the send queue. This does not mean
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * however, that the next sendmsg() call will succeed. If the application tries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * to send to a congested destination, the system call may still fail (and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * return ENOBUFS).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static __poll_t rds_poll(struct file *file, struct socket *sock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) poll_table *wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct rds_sock *rs = rds_sk_to_rs(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) __poll_t mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) poll_wait(file, sk_sleep(sk), wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (rs->rs_seen_congestion)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) poll_wait(file, &rds_poll_waitq, wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) read_lock_irqsave(&rs->rs_recv_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (!rs->rs_cong_monitor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* When a congestion map was updated, we signal EPOLLIN for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * "historical" reasons. Applications can also poll for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * WRBAND instead. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (rds_cong_updated_since(&rs->rs_cong_track))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) mask |= (EPOLLIN | EPOLLRDNORM | EPOLLWRBAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) spin_lock(&rs->rs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (rs->rs_cong_notify)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) mask |= (EPOLLIN | EPOLLRDNORM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) spin_unlock(&rs->rs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!list_empty(&rs->rs_recv_queue) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) !list_empty(&rs->rs_notify_queue) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) !list_empty(&rs->rs_zcookie_queue.zcookie_head))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) mask |= (EPOLLIN | EPOLLRDNORM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (rs->rs_snd_bytes < rds_sk_sndbuf(rs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) mask |= (EPOLLOUT | EPOLLWRNORM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) mask |= POLLERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) read_unlock_irqrestore(&rs->rs_recv_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* clear state any time we wake a seen-congested socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) rs->rs_seen_congestion = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int rds_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct rds_sock *rs = rds_sk_to_rs(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) rds_tos_t utos, tos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) case SIOCRDSSETTOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (get_user(utos, (rds_tos_t __user *)arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (rs->rs_transport &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) rs->rs_transport->get_tos_map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) tos = rs->rs_transport->get_tos_map(utos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (rs->rs_tos || rs->rs_conn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) rs->rs_tos = tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) case SIOCRDSGETTOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) tos = rs->rs_tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (put_user(tos, (rds_tos_t __user *)arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static int rds_cancel_sent_to(struct rds_sock *rs, sockptr_t optval, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct sockaddr_in6 sin6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct sockaddr_in sin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* racing with another thread binding seems ok here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (ipv6_addr_any(&rs->rs_bound_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) ret = -ENOTCONN; /* XXX not a great errno */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (len < sizeof(struct sockaddr_in)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) } else if (len < sizeof(struct sockaddr_in6)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) /* Assume IPv4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (copy_from_sockptr(&sin, optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) sizeof(struct sockaddr_in))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) ipv6_addr_set_v4mapped(sin.sin_addr.s_addr, &sin6.sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) sin6.sin6_port = sin.sin_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (copy_from_sockptr(&sin6, optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) sizeof(struct sockaddr_in6))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) rds_send_drop_to(rs, &sin6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static int rds_set_bool_option(unsigned char *optvar, sockptr_t optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (optlen < sizeof(int))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (copy_from_sockptr(&value, optval, sizeof(int)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) *optvar = !!value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static int rds_cong_monitor(struct rds_sock *rs, sockptr_t optval, int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ret = rds_set_bool_option(&rs->rs_cong_monitor, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (ret == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (rs->rs_cong_monitor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) rds_cong_add_socket(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) rds_cong_remove_socket(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) rs->rs_cong_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) rs->rs_cong_notify = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static int rds_set_transport(struct rds_sock *rs, sockptr_t optval, int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int t_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (rs->rs_transport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return -EOPNOTSUPP; /* previously attached to transport */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (optlen != sizeof(int))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (copy_from_sockptr(&t_type, optval, sizeof(t_type)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (t_type < 0 || t_type >= RDS_TRANS_COUNT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) rs->rs_transport = rds_trans_get(t_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) return rs->rs_transport ? 0 : -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static int rds_enable_recvtstamp(struct sock *sk, sockptr_t optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) int optlen, int optname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int val, valbool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (optlen != sizeof(int))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (copy_from_sockptr(&val, optval, sizeof(int)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) valbool = val ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (optname == SO_TIMESTAMP_NEW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) sock_set_flag(sk, SOCK_TSTAMP_NEW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (valbool)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) sock_set_flag(sk, SOCK_RCVTSTAMP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) sock_reset_flag(sk, SOCK_RCVTSTAMP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static int rds_recv_track_latency(struct rds_sock *rs, sockptr_t optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) struct rds_rx_trace_so trace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (optlen != sizeof(struct rds_rx_trace_so))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (copy_from_sockptr(&trace, optval, sizeof(trace)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (trace.rx_traces > RDS_MSG_RX_DGRAM_TRACE_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) rs->rs_rx_traces = trace.rx_traces;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) for (i = 0; i < rs->rs_rx_traces; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (trace.rx_trace_pos[i] > RDS_MSG_RX_DGRAM_TRACE_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) rs->rs_rx_traces = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) rs->rs_rx_trace[i] = trace.rx_trace_pos[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static int rds_setsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) sockptr_t optval, unsigned int optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct rds_sock *rs = rds_sk_to_rs(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) if (level != SOL_RDS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) ret = -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) case RDS_CANCEL_SENT_TO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) ret = rds_cancel_sent_to(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) case RDS_GET_MR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ret = rds_get_mr(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) case RDS_GET_MR_FOR_DEST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ret = rds_get_mr_for_dest(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case RDS_FREE_MR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ret = rds_free_mr(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) case RDS_RECVERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) ret = rds_set_bool_option(&rs->rs_recverr, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) case RDS_CONG_MONITOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ret = rds_cong_monitor(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) case SO_RDS_TRANSPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) lock_sock(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ret = rds_set_transport(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) release_sock(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) case SO_TIMESTAMP_OLD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) case SO_TIMESTAMP_NEW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) lock_sock(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ret = rds_enable_recvtstamp(sock->sk, optval, optlen, optname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) release_sock(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) case SO_RDS_MSG_RXPATH_LATENCY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ret = rds_recv_track_latency(rs, optval, optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) ret = -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static int rds_getsockopt(struct socket *sock, int level, int optname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) char __user *optval, int __user *optlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) struct rds_sock *rs = rds_sk_to_rs(sock->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) int ret = -ENOPROTOOPT, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) int trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (level != SOL_RDS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (get_user(len, optlen)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) switch (optname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) case RDS_INFO_FIRST ... RDS_INFO_LAST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) ret = rds_info_getsockopt(sock, optname, optval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) optlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) case RDS_RECVERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (len < sizeof(int))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (put_user(rs->rs_recverr, (int __user *) optval) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) put_user(sizeof(int), optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) case SO_RDS_TRANSPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (len < sizeof(int)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) trans = (rs->rs_transport ? rs->rs_transport->t_type :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) RDS_TRANS_NONE); /* unbound */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (put_user(trans, (int __user *)optval) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) put_user(sizeof(int), optlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) int addr_len, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct sock *sk = sock->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct sockaddr_in *sin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct rds_sock *rs = rds_sk_to_rs(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (addr_len < offsetofend(struct sockaddr, sa_family))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) switch (uaddr->sa_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) sin = (struct sockaddr_in *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) if (addr_len < sizeof(struct sockaddr_in)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ret = -EDESTADDRREQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (ipv4_is_multicast(sin->sin_addr.s_addr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) sin->sin_addr.s_addr == htonl(INADDR_BROADCAST)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &rs->rs_conn_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) rs->rs_conn_port = sin->sin_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) case AF_INET6: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct sockaddr_in6 *sin6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) int addr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) sin6 = (struct sockaddr_in6 *)uaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (addr_len < sizeof(struct sockaddr_in6)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) addr_type = ipv6_addr_type(&sin6->sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (!(addr_type & IPV6_ADDR_UNICAST)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) __be32 addr4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if (!(addr_type & IPV6_ADDR_MAPPED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ret = -EPROTOTYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /* It is a mapped address. Need to do some sanity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * checks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) addr4 = sin6->sin6_addr.s6_addr32[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (addr4 == htonl(INADDR_ANY) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) addr4 == htonl(INADDR_BROADCAST) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) ipv4_is_multicast(addr4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) ret = -EPROTOTYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (addr_type & IPV6_ADDR_LINKLOCAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) /* If socket is arleady bound to a link local address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * the peer address must be on the same link.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (sin6->sin6_scope_id == 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) (!ipv6_addr_any(&rs->rs_bound_addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) rs->rs_bound_scope_id &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) sin6->sin6_scope_id != rs->rs_bound_scope_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) /* Remember the connected address scope ID. It will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * be checked against the binding local address when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * the socket is bound.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) rs->rs_bound_scope_id = sin6->sin6_scope_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) rs->rs_conn_addr = sin6->sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) rs->rs_conn_port = sin6->sin6_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ret = -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) static struct proto rds_proto = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) .name = "RDS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) .obj_size = sizeof(struct rds_sock),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) static const struct proto_ops rds_proto_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) .family = AF_RDS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) .release = rds_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) .bind = rds_bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) .connect = rds_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) .socketpair = sock_no_socketpair,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) .accept = sock_no_accept,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) .getname = rds_getname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) .poll = rds_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .ioctl = rds_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .listen = sock_no_listen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) .shutdown = sock_no_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) .setsockopt = rds_setsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) .getsockopt = rds_getsockopt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) .sendmsg = rds_sendmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) .recvmsg = rds_recvmsg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) .mmap = sock_no_mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) .sendpage = sock_no_sendpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) static void rds_sock_destruct(struct sock *sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) struct rds_sock *rs = rds_sk_to_rs(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) WARN_ON((&rs->rs_item != rs->rs_item.next ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) &rs->rs_item != rs->rs_item.prev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) static int __rds_create(struct socket *sock, struct sock *sk, int protocol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) sock_init_data(sock, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) sock->ops = &rds_proto_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) sk->sk_protocol = protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) sk->sk_destruct = rds_sock_destruct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) rs = rds_sk_to_rs(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) spin_lock_init(&rs->rs_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) rwlock_init(&rs->rs_recv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) INIT_LIST_HEAD(&rs->rs_send_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) INIT_LIST_HEAD(&rs->rs_recv_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) INIT_LIST_HEAD(&rs->rs_notify_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) INIT_LIST_HEAD(&rs->rs_cong_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) rds_message_zcopy_queue_init(&rs->rs_zcookie_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) spin_lock_init(&rs->rs_rdma_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) rs->rs_rdma_keys = RB_ROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) rs->rs_rx_traces = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) rs->rs_tos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) rs->rs_conn = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) list_add_tail(&rs->rs_item, &rds_sock_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) rds_sock_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) static int rds_create(struct net *net, struct socket *sock, int protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) int kern)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (sock->type != SOCK_SEQPACKET || protocol)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return -ESOCKTNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) sk = sk_alloc(net, AF_RDS, GFP_KERNEL, &rds_proto, kern);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) return __rds_create(sock, sk, protocol);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) void rds_sock_addref(struct rds_sock *rs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) sock_hold(rds_rs_to_sk(rs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) void rds_sock_put(struct rds_sock *rs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) sock_put(rds_rs_to_sk(rs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) static const struct net_proto_family rds_family_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) .family = AF_RDS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) .create = rds_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) static void rds_sock_inc_info(struct socket *sock, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) struct rds_info_iterator *iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) struct rds_info_lengths *lens)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) struct rds_incoming *inc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) unsigned int total = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) len /= sizeof(struct rds_info_message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) list_for_each_entry(rs, &rds_sock_list, rs_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) /* This option only supports IPv4 sockets. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (!ipv6_addr_v4mapped(&rs->rs_bound_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) read_lock(&rs->rs_recv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /* XXX too lazy to maintain counts.. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) list_for_each_entry(inc, &rs->rs_recv_queue, i_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) total++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (total <= len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) rds_inc_info_copy(inc, iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) inc->i_saddr.s6_addr32[3],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) rs->rs_bound_addr_v4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) read_unlock(&rs->rs_recv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) lens->nr = total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) lens->each = sizeof(struct rds_info_message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) static void rds6_sock_inc_info(struct socket *sock, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) struct rds_info_iterator *iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) struct rds_info_lengths *lens)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct rds_incoming *inc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) unsigned int total = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) len /= sizeof(struct rds6_info_message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) list_for_each_entry(rs, &rds_sock_list, rs_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) read_lock(&rs->rs_recv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) list_for_each_entry(inc, &rs->rs_recv_queue, i_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) total++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) if (total <= len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) rds6_inc_info_copy(inc, iter, &inc->i_saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) &rs->rs_bound_addr, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) read_unlock(&rs->rs_recv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) lens->nr = total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) lens->each = sizeof(struct rds6_info_message);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) static void rds_sock_info(struct socket *sock, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct rds_info_iterator *iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) struct rds_info_lengths *lens)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) struct rds_info_socket sinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) unsigned int cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) len /= sizeof(struct rds_info_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (len < rds_sock_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) cnt = rds_sock_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) list_for_each_entry(rs, &rds_sock_list, rs_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /* This option only supports IPv4 sockets. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (!ipv6_addr_v4mapped(&rs->rs_bound_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) sinfo.sndbuf = rds_sk_sndbuf(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) sinfo.rcvbuf = rds_sk_rcvbuf(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) sinfo.bound_addr = rs->rs_bound_addr_v4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) sinfo.connected_addr = rs->rs_conn_addr_v4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) sinfo.bound_port = rs->rs_bound_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) sinfo.connected_port = rs->rs_conn_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) sinfo.inum = sock_i_ino(rds_rs_to_sk(rs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) rds_info_copy(iter, &sinfo, sizeof(sinfo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) lens->nr = cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) lens->each = sizeof(struct rds_info_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) static void rds6_sock_info(struct socket *sock, unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) struct rds_info_iterator *iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) struct rds_info_lengths *lens)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) struct rds6_info_socket sinfo6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct rds_sock *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) len /= sizeof(struct rds6_info_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) spin_lock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (len < rds_sock_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) list_for_each_entry(rs, &rds_sock_list, rs_item) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) sinfo6.sndbuf = rds_sk_sndbuf(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) sinfo6.rcvbuf = rds_sk_rcvbuf(rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) sinfo6.bound_addr = rs->rs_bound_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) sinfo6.connected_addr = rs->rs_conn_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) sinfo6.bound_port = rs->rs_bound_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) sinfo6.connected_port = rs->rs_conn_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) sinfo6.inum = sock_i_ino(rds_rs_to_sk(rs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) rds_info_copy(iter, &sinfo6, sizeof(sinfo6));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) lens->nr = rds_sock_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) lens->each = sizeof(struct rds6_info_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) spin_unlock_bh(&rds_sock_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) static void rds_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) sock_unregister(rds_family_ops.family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) proto_unregister(&rds_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) rds_conn_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) rds_cong_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) rds_sysctl_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) rds_threads_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) rds_stats_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) rds_page_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) rds_bind_lock_destroy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) rds_info_deregister_func(RDS_INFO_SOCKETS, rds_sock_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) rds_info_deregister_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) rds_info_deregister_func(RDS6_INFO_SOCKETS, rds6_sock_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) rds_info_deregister_func(RDS6_INFO_RECV_MESSAGES, rds6_sock_inc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) module_exit(rds_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) u32 rds_gen_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) static int rds_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) net_get_random_once(&rds_gen_num, sizeof(rds_gen_num));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) ret = rds_bind_lock_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) ret = rds_conn_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) goto out_bind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) ret = rds_threads_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) goto out_conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) ret = rds_sysctl_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) goto out_threads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) ret = rds_stats_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) goto out_sysctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) ret = proto_register(&rds_proto, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) goto out_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) ret = sock_register(&rds_family_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) goto out_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) rds_info_register_func(RDS_INFO_SOCKETS, rds_sock_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) rds_info_register_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) rds_info_register_func(RDS6_INFO_SOCKETS, rds6_sock_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) rds_info_register_func(RDS6_INFO_RECV_MESSAGES, rds6_sock_inc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) out_proto:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) proto_unregister(&rds_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) out_stats:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) rds_stats_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) out_sysctl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) rds_sysctl_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) out_threads:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) rds_threads_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) out_conn:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) rds_conn_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) rds_cong_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) rds_page_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) out_bind:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) rds_bind_lock_destroy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) module_init(rds_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) #define DRV_VERSION "4.0"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) #define DRV_RELDATE "Feb 12, 2009"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) MODULE_DESCRIPTION("RDS: Reliable Datagram Sockets"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) " v" DRV_VERSION " (" DRV_RELDATE ")");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) MODULE_VERSION(DRV_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) MODULE_ALIAS_NETPROTO(PF_RDS);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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