From: Guy Shapiro <[email protected]> Add support for network namespaces in the ib_cma module. This is accomplished by:
1. Adding network namespace parameter for rdma_create_id. This parameter is used to populate the network namespace field in rdma_id_private. rdma_create_id keeps a reference on the network namespace. 2. Using the network namespace from the rdma_id instead of init_net inside of ib_cma, when listening on an ID and when looking for an ID for an incoming request. 3. Decrementing the reference count for the appropriate network namespace when calling rdma_destroy_id. In order to preserve the current behavior init_net is passed when calling from other modules. Signed-off-by: Guy Shapiro <[email protected]> Signed-off-by: Haggai Eran <[email protected]> Signed-off-by: Yotam Kenneth <[email protected]> Signed-off-by: Shachar Raindel <[email protected]> --- drivers/infiniband/core/cma.c | 46 +++++++++++++--------- drivers/infiniband/core/ucma.c | 3 +- drivers/infiniband/ulp/iser/iser_verbs.c | 2 +- drivers/infiniband/ulp/isert/ib_isert.c | 2 +- .../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h | 4 +- include/rdma/rdma_cm.h | 6 ++- net/9p/trans_rdma.c | 4 +- net/rds/ib.c | 2 +- net/rds/ib_cm.c | 2 +- net/rds/iw.c | 2 +- net/rds/iw_cm.c | 2 +- net/rds/rdma_transport.c | 4 +- net/sunrpc/xprtrdma/svc_rdma_transport.c | 4 +- net/sunrpc/xprtrdma/verbs.c | 3 +- 14 files changed, 52 insertions(+), 34 deletions(-) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index f40ca053fa3e..debf25ccf930 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -591,7 +591,8 @@ static int cma_disable_callback(struct rdma_id_private *id_priv, return 0; } -struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, +struct rdma_cm_id *rdma_create_id(struct net *net, + rdma_cm_event_handler event_handler, void *context, enum rdma_port_space ps, enum ib_qp_type qp_type) { @@ -615,7 +616,7 @@ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, INIT_LIST_HEAD(&id_priv->listen_list); INIT_LIST_HEAD(&id_priv->mc_list); get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); - id_priv->id.route.addr.dev_addr.net = &init_net; + id_priv->id.route.addr.dev_addr.net = get_net(net); return &id_priv->id; } @@ -1257,7 +1258,7 @@ static bool cma_match_net_dev(const struct rdma_id_private *id_priv, return addr->src_addr.ss_family == AF_IB; return !addr->dev_addr.bound_dev_if || - (net_eq(dev_net(net_dev), &init_net) && + (net_eq(dev_net(net_dev), addr->dev_addr.net) && addr->dev_addr.bound_dev_if == net_dev->ifindex); } @@ -1314,7 +1315,7 @@ static struct rdma_id_private *cma_id_from_event(struct ib_cm_id *cm_id, } } - bind_list = cma_ps_find(&init_net, + bind_list = cma_ps_find(dev_net(*net_dev), rdma_ps_from_service_id(req.service_id), cma_port_from_service_id(req.service_id)); id_priv = cma_find_listener(bind_list, cm_id, ib_event, &req, *net_dev); @@ -1386,6 +1387,7 @@ static void cma_cancel_operation(struct rdma_id_private *id_priv, static void cma_release_port(struct rdma_id_private *id_priv) { struct rdma_bind_list *bind_list = id_priv->bind_list; + struct net *net = id_priv->id.route.addr.dev_addr.net; if (!bind_list) return; @@ -1393,7 +1395,7 @@ static void cma_release_port(struct rdma_id_private *id_priv) mutex_lock(&lock); hlist_del(&id_priv->node); if (hlist_empty(&bind_list->owners)) { - cma_ps_remove(&init_net, bind_list->ps, bind_list->port); + cma_ps_remove(net, bind_list->ps, bind_list->port); kfree(bind_list); } mutex_unlock(&lock); @@ -1452,6 +1454,7 @@ void rdma_destroy_id(struct rdma_cm_id *id) cma_deref_id(id_priv->id.context); kfree(id_priv->id.route.path_rec); + put_net(id_priv->id.route.addr.dev_addr.net); kfree(id_priv); } EXPORT_SYMBOL(rdma_destroy_id); @@ -1582,7 +1585,8 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, ib_event->param.req_rcvd.primary_path->service_id; int ret; - id = rdma_create_id(listen_id->event_handler, listen_id->context, + id = rdma_create_id(listen_id->route.addr.dev_addr.net, + listen_id->event_handler, listen_id->context, listen_id->ps, ib_event->param.req_rcvd.qp_type); if (IS_ERR(id)) return NULL; @@ -1632,9 +1636,10 @@ static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, struct rdma_id_private *id_priv; struct rdma_cm_id *id; const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; + struct net *net = listen_id->route.addr.dev_addr.net; int ret; - id = rdma_create_id(listen_id->event_handler, listen_id->context, + id = rdma_create_id(net, listen_id->event_handler, listen_id->context, listen_id->ps, IB_QPT_UD); if (IS_ERR(id)) return NULL; @@ -1872,7 +1877,8 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id, return -ECONNABORTED; /* Create a new RDMA id for the new IW CM ID */ - new_cm_id = rdma_create_id(listen_id->id.event_handler, + new_cm_id = rdma_create_id(listen_id->id.route.addr.dev_addr.net, + listen_id->id.event_handler, listen_id->id.context, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(new_cm_id)) { @@ -2000,12 +2006,13 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv, { struct rdma_id_private *dev_id_priv; struct rdma_cm_id *id; + struct net *net = id_priv->id.route.addr.dev_addr.net; int ret; if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) return; - id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps, + id = rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, id_priv->id.qp_type); if (IS_ERR(id)) return; @@ -2678,7 +2685,8 @@ static int cma_alloc_port(enum rdma_port_space ps, if (!bind_list) return -ENOMEM; - ret = cma_ps_alloc(&init_net, ps, bind_list, snum); + ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, + snum); if (ret < 0) goto err; @@ -2697,13 +2705,14 @@ static int cma_alloc_any_port(enum rdma_port_space ps, static unsigned int last_used_port; int low, high, remaining; unsigned int rover; + struct net *net = id_priv->id.route.addr.dev_addr.net; - inet_get_local_port_range(&init_net, &low, &high); + inet_get_local_port_range(net, &low, &high); remaining = (high - low) + 1; rover = prandom_u32() % remaining + low; retry: if (last_used_port != rover && - !cma_ps_find(&init_net, ps, (unsigned short)rover)) { + !cma_ps_find(net, ps, (unsigned short)rover)) { int ret = cma_alloc_port(ps, id_priv, rover); /* * Remember previously used port number in order to avoid @@ -2769,7 +2778,7 @@ static int cma_use_port(enum rdma_port_space ps, if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) return -EACCES; - bind_list = cma_ps_find(&init_net, ps, snum); + bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); if (!bind_list) { ret = cma_alloc_port(ps, id_priv, snum); } else { @@ -2961,8 +2970,11 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) if (addr->sa_family == AF_INET) id_priv->afonly = 1; #if IS_ENABLED(CONFIG_IPV6) - else if (addr->sa_family == AF_INET6) - id_priv->afonly = init_net.ipv6.sysctl.bindv6only; + else if (addr->sa_family == AF_INET6) { + struct net *net = id_priv->id.route.addr.dev_addr.net; + + id_priv->afonly = net->ipv6.sysctl.bindv6only; + } #endif } ret = cma_get_port(id_priv); @@ -3767,6 +3779,7 @@ static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id dev_addr = &id_priv->id.route.addr.dev_addr; if ((dev_addr->bound_dev_if == ndev->ifindex) && + (net_eq(dev_net(ndev), dev_addr->net)) && memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", ndev->name, &id_priv->id); @@ -3792,9 +3805,6 @@ static int cma_netdev_callback(struct notifier_block *self, unsigned long event, struct rdma_id_private *id_priv; int ret = NOTIFY_DONE; - if (dev_net(ndev) != &init_net) - return NOTIFY_DONE; - if (event != NETDEV_BONDING_FAILOVER) return NOTIFY_DONE; diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index a53fc9b01c69..82a17a7b7e6d 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -472,7 +472,8 @@ static ssize_t ucma_create_id(struct ucma_file *file, const char __user *inbuf, return -ENOMEM; ctx->uid = cmd.uid; - ctx->cm_id = rdma_create_id(ucma_event_handler, ctx, cmd.ps, qp_type); + ctx->cm_id = rdma_create_id(&init_net, ucma_event_handler, ctx, cmd.ps, + qp_type); if (IS_ERR(ctx->cm_id)) { ret = PTR_ERR(ctx->cm_id); goto err1; diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index ae70cc1463ac..2896ed64da73 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -1012,7 +1012,7 @@ int iser_connect(struct iser_conn *iser_conn, ib_conn->beacon.wr_id = ISER_BEACON_WRID; ib_conn->beacon.opcode = IB_WR_SEND; - ib_conn->cma_id = rdma_create_id(iser_cma_handler, + ib_conn->cma_id = rdma_create_id(&init_net, iser_cma_handler, (void *)iser_conn, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(ib_conn->cma_id)) { diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index dc439a40da3f..797fc398c266 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -3065,7 +3065,7 @@ isert_setup_id(struct isert_np *isert_np) sa = (struct sockaddr *)&np->np_sockaddr; isert_dbg("ksockaddr: %p, sa: %p\n", &np->np_sockaddr, sa); - id = rdma_create_id(isert_cma_handler, isert_np, + id = rdma_create_id(&init_net, isert_cma_handler, isert_np, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(id)) { isert_err("rdma_create_id() failed: %ld\n", PTR_ERR(id)); diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h index f5d1d9f8f1ed..eb1a3abdb153 100644 --- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h +++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h @@ -129,7 +129,9 @@ extern kib_tunables_t kiblnd_tunables; IBLND_CREDIT_HIGHWATER_V1 : \ *kiblnd_tunables.kib_peercredits_hiw) /* when eagerly to return credits */ -#define kiblnd_rdma_create_id(cb, dev, ps, qpt) rdma_create_id(cb, dev, ps, qpt) +#define kiblnd_rdma_create_id(cb, dev, ps, qpt) rdma_create_id(&init_net, \ + cb, dev, \ + ps, qpt) static inline int kiblnd_concurrent_sends_v1(void) diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h index c92522c192d2..463ec0ccbe51 100644 --- a/include/rdma/rdma_cm.h +++ b/include/rdma/rdma_cm.h @@ -160,13 +160,17 @@ struct rdma_cm_id { /** * rdma_create_id - Create an RDMA identifier. * + * @net: The network namespace in which to create the new id. * @event_handler: User callback invoked to report events associated with the * returned rdma_id. * @context: User specified context associated with the id. * @ps: RDMA port space. * @qp_type: type of queue pair associated with the id. + * + * The id holds a reference on the network namespace until it is destroyed. */ -struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, +struct rdma_cm_id *rdma_create_id(struct net *net, + rdma_cm_event_handler event_handler, void *context, enum rdma_port_space ps, enum ib_qp_type qp_type); diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c index ba1210253f5e..52b4a2f993f2 100644 --- a/net/9p/trans_rdma.c +++ b/net/9p/trans_rdma.c @@ -655,8 +655,8 @@ rdma_create_trans(struct p9_client *client, const char *addr, char *args) return -ENOMEM; /* Create the RDMA CM ID */ - rdma->cm_id = rdma_create_id(p9_cm_event_handler, client, RDMA_PS_TCP, - IB_QPT_RC); + rdma->cm_id = rdma_create_id(&init_net, p9_cm_event_handler, client, + RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(rdma->cm_id)) goto error; diff --git a/net/rds/ib.c b/net/rds/ib.c index c6f95b9494ae..3f87a93e38bb 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -317,7 +317,7 @@ static int rds_ib_laddr_check(__be32 addr) /* Create a CMA ID and try to bind it. This catches both * IB and iWARP capable NICs. */ - cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); + cm_id = rdma_create_id(&init_net, NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) return PTR_ERR(cm_id); diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index a75e8832bc23..79126a190842 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -564,7 +564,7 @@ int rds_ib_conn_connect(struct rds_connection *conn) /* XXX I wonder what affect the port space has */ /* delegate cm event handler to rdma_transport */ - ic->i_cm_id = rdma_create_id(rds_rdma_cm_event_handler, conn, + ic->i_cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, conn, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(ic->i_cm_id)) { ret = PTR_ERR(ic->i_cm_id); diff --git a/net/rds/iw.c b/net/rds/iw.c index c7dcddbf17cb..e32221eb1a6c 100644 --- a/net/rds/iw.c +++ b/net/rds/iw.c @@ -223,7 +223,7 @@ static int rds_iw_laddr_check(__be32 addr) /* Create a CMA ID and try to bind it. This catches both * IB and iWARP capable NICs. */ - cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); + cm_id = rdma_create_id(&init_net, NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) return PTR_ERR(cm_id); diff --git a/net/rds/iw_cm.c b/net/rds/iw_cm.c index 8f486fa32079..6068da58701f 100644 --- a/net/rds/iw_cm.c +++ b/net/rds/iw_cm.c @@ -523,7 +523,7 @@ int rds_iw_conn_connect(struct rds_connection *conn) /* XXX I wonder what affect the port space has */ /* delegate cm event handler to rdma_transport */ - ic->i_cm_id = rdma_create_id(rds_rdma_cm_event_handler, conn, + ic->i_cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, conn, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(ic->i_cm_id)) { ret = PTR_ERR(ic->i_cm_id); diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c index 208240836043..7deaa617e821 100644 --- a/net/rds/rdma_transport.c +++ b/net/rds/rdma_transport.c @@ -131,8 +131,8 @@ static int rds_rdma_listen_init(void) struct rdma_cm_id *cm_id; int ret; - cm_id = rdma_create_id(rds_rdma_cm_event_handler, NULL, RDMA_PS_TCP, - IB_QPT_RC); + cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, NULL, + RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) { ret = PTR_ERR(cm_id); printk(KERN_ERR "RDS/RDMA: failed to setup listener, " diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 11d5133c3f38..4e220e6716d4 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -691,8 +691,8 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv, if (!cma_xprt) return ERR_PTR(-ENOMEM); - listen_id = rdma_create_id(rdma_listen_handler, cma_xprt, RDMA_PS_TCP, - IB_QPT_RC); + listen_id = rdma_create_id(&init_net, rdma_listen_handler, cma_xprt, + RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(listen_id)) { ret = PTR_ERR(listen_id); dprintk("svcrdma: rdma_create_id failed = %d\n", ret); diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index afd504375a9a..2c605d22a3f6 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -423,7 +423,8 @@ rpcrdma_create_id(struct rpcrdma_xprt *xprt, init_completion(&ia->ri_done); - id = rdma_create_id(rpcrdma_conn_upcall, xprt, RDMA_PS_TCP, IB_QPT_RC); + id = rdma_create_id(&init_net, rpcrdma_conn_upcall, xprt, RDMA_PS_TCP, + IB_QPT_RC); if (IS_ERR(id)) { rc = PTR_ERR(id); dprintk("RPC: %s: rdma_create_id() failed %i\n", -- 1.7.11.2 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
