^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * udp_diag.c Module for monitoring UDP transport protocols sockets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Authors: Pavel Emelyanov, <xemul@parallels.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/inet_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net/udplite.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sock_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) const struct inet_diag_req_v2 *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct nlattr *bc, bool net_admin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) if (!inet_diag_bc_sk(bc, sk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return inet_sk_diag_fill(sk, NULL, skb, cb, req, NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) net_admin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int udp_dump_one(struct udp_table *tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct sk_buff *in_skb = cb->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct sock *sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct sk_buff *rep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (req->sdiag_family == AF_INET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* src and dst are swapped for historical reasons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) sk = __udp4_lib_lookup(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) req->id.idiag_src[0], req->id.idiag_sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) req->id.idiag_dst[0], req->id.idiag_dport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) req->id.idiag_if, 0, tbl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) else if (req->sdiag_family == AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) sk = __udp6_lib_lookup(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) (struct in6_addr *)req->id.idiag_src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) req->id.idiag_sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) (struct in6_addr *)req->id.idiag_dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) req->id.idiag_dport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) req->id.idiag_if, 0, tbl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (sk && !refcount_inc_not_zero(&sk->sk_refcnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) goto out_nosk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) err = sock_diag_check_cookie(sk, req->id.idiag_cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) rep = nlmsg_new(nla_total_size(sizeof(struct inet_diag_msg)) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) inet_diag_msg_attrs_size() +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) nla_total_size(sizeof(struct inet_diag_meminfo)) + 64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (!rep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) err = inet_sk_diag_fill(sk, NULL, rep, cb, req, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) netlink_net_capable(in_skb, CAP_NET_ADMIN));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) kfree_skb(rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) MSG_DONTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) out_nosk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static void udp_dump(struct udp_table *table, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) const struct inet_diag_req_v2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) bool net_admin = netlink_net_capable(cb->skb, CAP_NET_ADMIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct inet_diag_dump_data *cb_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int num, s_num, slot, s_slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct nlattr *bc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) cb_data = cb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) bc = cb_data->inet_diag_nla_bc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) s_slot = cb->args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) num = s_num = cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) for (slot = s_slot; slot <= table->mask; s_num = 0, slot++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct udp_hslot *hslot = &table->hash[slot];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) num = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (hlist_empty(&hslot->head))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) spin_lock_bh(&hslot->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) sk_for_each(sk, &hslot->head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (!net_eq(sock_net(sk), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (num < s_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (!(r->idiag_states & (1 << sk->sk_state)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (r->sdiag_family != AF_UNSPEC &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) sk->sk_family != r->sdiag_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (r->id.idiag_sport != inet->inet_sport &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) r->id.idiag_sport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (r->id.idiag_dport != inet->inet_dport &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) r->id.idiag_dport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (sk_diag_dump(sk, skb, cb, r, bc, net_admin) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) spin_unlock_bh(&hslot->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) num++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) spin_unlock_bh(&hslot->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) cb->args[0] = slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) cb->args[1] = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static void udp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) const struct inet_diag_req_v2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) udp_dump(&udp_table, skb, cb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int udp_diag_dump_one(struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return udp_dump_one(&udp_table, cb, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void udp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) void *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) r->idiag_rqueue = udp_rqueue_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) r->idiag_wqueue = sk_wmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #ifdef CONFIG_INET_DIAG_DESTROY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static int __udp_diag_destroy(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) const struct inet_diag_req_v2 *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct udp_table *tbl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (req->sdiag_family == AF_INET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) sk = __udp4_lib_lookup(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) req->id.idiag_dst[0], req->id.idiag_dport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) req->id.idiag_src[0], req->id.idiag_sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) req->id.idiag_if, 0, tbl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) else if (req->sdiag_family == AF_INET6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (ipv6_addr_v4mapped((struct in6_addr *)req->id.idiag_dst) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ipv6_addr_v4mapped((struct in6_addr *)req->id.idiag_src))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) sk = __udp4_lib_lookup(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) req->id.idiag_dst[3], req->id.idiag_dport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) req->id.idiag_src[3], req->id.idiag_sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) req->id.idiag_if, 0, tbl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) sk = __udp6_lib_lookup(net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) (struct in6_addr *)req->id.idiag_dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) req->id.idiag_dport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) (struct in6_addr *)req->id.idiag_src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) req->id.idiag_sport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) req->id.idiag_if, 0, tbl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (sk && !refcount_inc_not_zero(&sk->sk_refcnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) sk = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (sock_diag_check_cookie(sk, req->id.idiag_cookie)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) err = sock_diag_destroy(sk, ECONNABORTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int udp_diag_destroy(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return __udp_diag_destroy(in_skb, req, &udp_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int udplite_diag_destroy(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return __udp_diag_destroy(in_skb, req, &udplite_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static const struct inet_diag_handler udp_diag_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .dump = udp_diag_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .dump_one = udp_diag_dump_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .idiag_get_info = udp_diag_get_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .idiag_type = IPPROTO_UDP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) .idiag_info_size = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #ifdef CONFIG_INET_DIAG_DESTROY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .destroy = udp_diag_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static void udplite_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) const struct inet_diag_req_v2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) udp_dump(&udplite_table, skb, cb, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static int udplite_diag_dump_one(struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return udp_dump_one(&udplite_table, cb, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static const struct inet_diag_handler udplite_diag_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) .dump = udplite_diag_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) .dump_one = udplite_diag_dump_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) .idiag_get_info = udp_diag_get_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) .idiag_type = IPPROTO_UDPLITE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) .idiag_info_size = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #ifdef CONFIG_INET_DIAG_DESTROY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) .destroy = udplite_diag_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static int __init udp_diag_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) err = inet_diag_register(&udp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) err = inet_diag_register(&udplite_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) goto out_lite;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) out_lite:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) inet_diag_unregister(&udp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static void __exit udp_diag_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) inet_diag_unregister(&udplite_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) inet_diag_unregister(&udp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) module_init(udp_diag_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) module_exit(udp_diag_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-17 /* AF_INET - IPPROTO_UDP */);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-136 /* AF_INET - IPPROTO_UDPLITE */);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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