/* * Shared Memory Communications over RDMA (SMC-R) and RoCE * * Monitoring SMC transport protocol sockets * * Copyright IBM Corp. 2016 * * Author(s): Ursula Braun */ #include #include #include #include #include #include #include #include #include #include "smc.h" #include "smc_core.h" static void smc_gid_be16_convert(__u8 *buf, u8 *gid_raw) { sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x", be16_to_cpu(((__be16 *)gid_raw)[0]), be16_to_cpu(((__be16 *)gid_raw)[1]), be16_to_cpu(((__be16 *)gid_raw)[2]), be16_to_cpu(((__be16 *)gid_raw)[3]), be16_to_cpu(((__be16 *)gid_raw)[4]), be16_to_cpu(((__be16 *)gid_raw)[5]), be16_to_cpu(((__be16 *)gid_raw)[6]), be16_to_cpu(((__be16 *)gid_raw)[7])); } static void smc_diag_msg_common_fill(struct smc_diag_msg *r, struct sock *sk) { struct smc_sock *smc = smc_sk(sk); r->diag_family = sk->sk_family; if (!smc->clcsock) return; r->id.idiag_sport = htons(smc->clcsock->sk->sk_num); r->id.idiag_dport = smc->clcsock->sk->sk_dport; r->id.idiag_if = smc->clcsock->sk->sk_bound_dev_if; sock_diag_save_cookie(sk, r->id.idiag_cookie); memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src)); memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst)); r->id.idiag_src[0] = smc->clcsock->sk->sk_rcv_saddr; r->id.idiag_dst[0] = smc->clcsock->sk->sk_daddr; } static int smc_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb, struct smc_diag_msg *r, struct user_namespace *user_ns) { if (nla_put_u8(skb, SMC_DIAG_SHUTDOWN, sk->sk_shutdown)) return 1; r->diag_uid = from_kuid_munged(user_ns, sock_i_uid(sk)); r->diag_inode = sock_i_ino(sk); return 0; } static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb, struct netlink_callback *cb, const struct smc_diag_req *req, struct nlattr *bc) { struct smc_sock *smc = smc_sk(sk); struct user_namespace *user_ns; struct smc_diag_msg *r; struct nlmsghdr *nlh; nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, cb->nlh->nlmsg_type, sizeof(*r), NLM_F_MULTI); if (!nlh) return -EMSGSIZE; r = nlmsg_data(nlh); smc_diag_msg_common_fill(r, sk); r->diag_state = sk->sk_state; r->diag_fallback = smc->use_fallback; user_ns = sk_user_ns(NETLINK_CB(cb->skb).sk); if (smc_diag_msg_attrs_fill(sk, skb, r, user_ns)) goto errout; if ((req->diag_ext & (1 << (SMC_DIAG_CONNINFO - 1))) && smc->conn.lgr) { struct smc_connection *conn = &smc->conn; struct smc_diag_conninfo cinfo = { .token = conn->alert_token_local, .sndbuf_size = conn->sndbuf_size, .rmbe_size = conn->rmbe_size, .peer_rmbe_size = conn->peer_rmbe_size, .rx_prod.wrap = conn->local_rx_ctrl.prod.wrap, .rx_prod.count = conn->local_rx_ctrl.prod.count, .rx_cons.wrap = conn->local_rx_ctrl.cons.wrap, .rx_cons.count = conn->local_rx_ctrl.cons.count, .tx_prod.wrap = conn->local_tx_ctrl.prod.wrap, .tx_prod.count = conn->local_tx_ctrl.prod.count, .tx_cons.wrap = conn->local_tx_ctrl.cons.wrap, .tx_cons.count = conn->local_tx_ctrl.cons.count, .tx_prod_flags = *(u8 *)&conn->local_tx_ctrl.prod_flags, .tx_conn_state_flags = *(u8 *)&conn->local_tx_ctrl.conn_state_flags, .rx_prod_flags = *(u8 *)&conn->local_rx_ctrl.prod_flags, .rx_conn_state_flags = *(u8 *)&conn->local_rx_ctrl.conn_state_flags, .tx_prep.wrap = conn->tx_curs_prep.wrap, .tx_prep.count = conn->tx_curs_prep.count, .tx_sent.wrap = conn->tx_curs_sent.wrap, .tx_sent.count = conn->tx_curs_sent.count, .tx_fin.wrap = conn->tx_curs_fin.wrap, .tx_fin.count = conn->tx_curs_fin.count, }; if (nla_put(skb, SMC_DIAG_CONNINFO, sizeof(cinfo), &cinfo) < 0) goto errout; } if ((req->diag_ext & (1 << (SMC_DIAG_LGRINFO - 1))) && smc->conn.lgr) { struct smc_diag_lgrinfo linfo = { .role = smc->conn.lgr->role, .lnk[0].ibport = smc->conn.lgr->lnk[0].ibport, .lnk[0].link_id = smc->conn.lgr->lnk[0].link_id, }; memcpy(linfo.lnk[0].ibname, smc->conn.lgr->lnk[0].smcibdev->ibdev->name, sizeof(smc->conn.lgr->lnk[0].smcibdev->ibdev->name)); smc_gid_be16_convert(linfo.lnk[0].gid, smc->conn.lgr->lnk[0].gid.raw); smc_gid_be16_convert(linfo.lnk[0].peer_gid, smc->conn.lgr->lnk[0].peer_gid); if (nla_put(skb, SMC_DIAG_LGRINFO, sizeof(linfo), &linfo) < 0) goto errout; } nlmsg_end(skb, nlh); return 0; errout: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static int smc_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); struct nlattr *bc = NULL; struct hlist_head *head; struct sock *sk; int rc = 0; read_lock(&smc_proto.h.smc_hash->lock); head = &smc_proto.h.smc_hash->ht; if (hlist_empty(head)) goto out; sk_for_each(sk, head) { if (!net_eq(sock_net(sk), net)) continue; rc = __smc_diag_dump(sk, skb, cb, nlmsg_data(cb->nlh), bc); if (rc) break; } out: read_unlock(&smc_proto.h.smc_hash->lock); return rc; } static int smc_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h) { struct net *net = sock_net(skb->sk); if (h->nlmsg_type == SOCK_DIAG_BY_FAMILY && h->nlmsg_flags & NLM_F_DUMP) { { struct netlink_dump_control c = { .dump = smc_diag_dump, .min_dump_alloc = SKB_WITH_OVERHEAD(32768), }; return netlink_dump_start(net->diag_nlsk, skb, h, &c); } } return 0; } static const struct sock_diag_handler smc_diag_handler = { .family = AF_SMC, .dump = smc_diag_handler_dump, }; static int __init smc_diag_init(void) { return sock_diag_register(&smc_diag_handler); } static void __exit smc_diag_exit(void) { sock_diag_unregister(&smc_diag_handler); } module_init(smc_diag_init); module_exit(smc_diag_exit); MODULE_LICENSE("GPL"); MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 43 /* AF_SMC */); a practical need to manage regulators on ACPI systems, using ad-hoc properties to describe regulators to the kernel presents a number of problems (especially should ACPI gain first class support for such things), and there are ongoing discussions as to how to manage this. Until there is a rough consensus, revert commit 13bed58ce8748d43, which hasn't been in a released kernel yet as discussed in [1] and the surrounding thread. [1] http://lkml.kernel.org/r/20170125184949.x2wkoo7kbaaajkjk@sirena.org.uk Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'net/ipv4/icmp.c')