diff options
author | Steve Wise <swise@opengridcomputing.com> | 2019-02-15 11:03:57 -0800 |
---|---|---|
committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-02-19 20:52:19 -0700 |
commit | 66920e1b25861d5bd99192489f6da7183529285e (patch) | |
tree | 010438d4c296abab5e304240dc3346be5c56e227 | |
parent | 3856ec4b93c9463d36ee39098dde1fbbd29ec6dd (diff) |
rdma_rxe: Use netlink messages to add/delete links
Add support for the RDMA_NLDEV_CMD_NEWLINK/DELLINK messages which allow
dynamically adding new RXE links. Deprecate the old module options for
now.
Cc: Moni Shoua <monis@mellanox.com>
Reviewed-by: Yanjun Zhu <yanjun.zhu@oracle.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe.c | 36 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe.h | 2 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_net.c | 4 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_net.h | 2 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_param.h | 3 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_sysfs.c | 6 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.c | 4 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.h | 2 |
8 files changed, 46 insertions, 13 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c index 08a45ce9cab5..a8c11b5e1e94 100644 --- a/drivers/infiniband/sw/rxe/rxe.c +++ b/drivers/infiniband/sw/rxe/rxe.c @@ -31,6 +31,7 @@ * SOFTWARE. */ +#include <rdma/rdma_netlink.h> #include <net/addrconf.h> #include "rxe.h" #include "rxe_loc.h" @@ -301,7 +302,7 @@ void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) /* called by ifc layer to create new rxe device. * The caller should allocate memory for rxe by calling ib_alloc_device. */ -int rxe_add(struct rxe_dev *rxe, unsigned int mtu) +int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name) { int err; @@ -311,9 +312,36 @@ int rxe_add(struct rxe_dev *rxe, unsigned int mtu) rxe_set_mtu(rxe, mtu); - return rxe_register_device(rxe); + return rxe_register_device(rxe, ibdev_name); } +static int rxe_newlink(const char *ibdev_name, struct net_device *ndev) +{ + struct rxe_dev *exists; + int err = 0; + + exists = rxe_get_dev_from_net(ndev); + if (exists) { + ib_device_put(&exists->ib_dev); + pr_err("already configured on %s\n", ndev->name); + err = -EEXIST; + goto err; + } + + err = rxe_net_add(ibdev_name, ndev); + if (err) { + pr_err("failed to add %s\n", ndev->name); + goto err; + } +err: + return err; +} + +static struct rdma_link_ops rxe_link_ops = { + .type = "rxe", + .newlink = rxe_newlink, +}; + static int __init rxe_module_init(void) { int err; @@ -329,12 +357,14 @@ static int __init rxe_module_init(void) if (err) return err; + rdma_link_register(&rxe_link_ops); pr_info("loaded\n"); return 0; } static void __exit rxe_module_exit(void) { + rdma_link_unregister(&rxe_link_ops); ib_unregister_driver(RDMA_DRIVER_RXE); rxe_net_exit(); rxe_cache_exit(); @@ -344,3 +374,5 @@ static void __exit rxe_module_exit(void) late_initcall(rxe_module_init); module_exit(rxe_module_exit); + +MODULE_ALIAS_RDMA_LINK("rxe"); diff --git a/drivers/infiniband/sw/rxe/rxe.h b/drivers/infiniband/sw/rxe/rxe.h index 63b3b89b894a..2e2dff478833 100644 --- a/drivers/infiniband/sw/rxe/rxe.h +++ b/drivers/infiniband/sw/rxe/rxe.h @@ -95,7 +95,7 @@ static inline u32 rxe_crc32(struct rxe_dev *rxe, void rxe_set_mtu(struct rxe_dev *rxe, unsigned int dev_mtu); -int rxe_add(struct rxe_dev *rxe, unsigned int mtu); +int rxe_add(struct rxe_dev *rxe, unsigned int mtu, const char *ibdev_name); void rxe_rcv(struct sk_buff *skb); diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c index fb792f5bc0b7..753cabcd441c 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -517,7 +517,7 @@ enum rdma_link_layer rxe_link_layer(struct rxe_dev *rxe, unsigned int port_num) return IB_LINK_LAYER_ETHERNET; } -int rxe_net_add(struct net_device *ndev) +int rxe_net_add(const char *ibdev_name, struct net_device *ndev) { int err; struct rxe_dev *rxe = NULL; @@ -528,7 +528,7 @@ int rxe_net_add(struct net_device *ndev) rxe->ndev = ndev; - err = rxe_add(rxe, ndev->mtu); + err = rxe_add(rxe, ndev->mtu, ibdev_name); if (err) { ib_dealloc_device(&rxe->ib_dev); return err; diff --git a/drivers/infiniband/sw/rxe/rxe_net.h b/drivers/infiniband/sw/rxe/rxe_net.h index ad79514191bb..2ca71d3d245c 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.h +++ b/drivers/infiniband/sw/rxe/rxe_net.h @@ -43,7 +43,7 @@ struct rxe_recv_sockets { struct socket *sk6; }; -int rxe_net_add(struct net_device *ndev); +int rxe_net_add(const char *ibdev_name, struct net_device *ndev); int rxe_net_init(void); void rxe_net_exit(void); diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h index bdea899a58ac..1abed47ca221 100644 --- a/drivers/infiniband/sw/rxe/rxe_param.h +++ b/drivers/infiniband/sw/rxe/rxe_param.h @@ -78,7 +78,8 @@ enum rxe_device_param { | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_SRQ_RESIZE - | IB_DEVICE_MEM_MGT_EXTENSIONS, + | IB_DEVICE_MEM_MGT_EXTENSIONS + | IB_DEVICE_ALLOW_USER_UNREG, RXE_MAX_SGE = 32, RXE_MAX_SGE_RD = 32, RXE_MAX_CQ = 16384, diff --git a/drivers/infiniband/sw/rxe/rxe_sysfs.c b/drivers/infiniband/sw/rxe/rxe_sysfs.c index 46587eb0da0e..ccda5f5a3bc0 100644 --- a/drivers/infiniband/sw/rxe/rxe_sysfs.c +++ b/drivers/infiniband/sw/rxe/rxe_sysfs.c @@ -81,7 +81,7 @@ static int rxe_param_set_add(const char *val, const struct kernel_param *kp) goto err; } - err = rxe_net_add(ndev); + err = rxe_net_add("rxe%d", ndev); if (err) { pr_err("failed to add %s\n", intf); goto err; @@ -130,6 +130,6 @@ static const struct kernel_param_ops rxe_remove_ops = { }; module_param_cb(add, &rxe_add_ops, NULL, 0200); -MODULE_PARM_DESC(add, "Create RXE device over network interface"); +MODULE_PARM_DESC(add, "DEPRECATED. Create RXE device over network interface"); module_param_cb(remove, &rxe_remove_ops, NULL, 0200); -MODULE_PARM_DESC(remove, "Remove RXE device over network interface"); +MODULE_PARM_DESC(remove, "DEPRECATED. Remove RXE device over network interface"); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index 79ad93b4140c..bd6a379b79d3 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -1182,7 +1182,7 @@ static const struct ib_device_ops rxe_dev_ops = { INIT_RDMA_OBJ_SIZE(ib_pd, rxe_pd, ibpd), }; -int rxe_register_device(struct rxe_dev *rxe) +int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name) { int err; struct ib_device *dev = &rxe->ib_dev; @@ -1251,7 +1251,7 @@ int rxe_register_device(struct rxe_dev *rxe) rdma_set_device_sysfs_group(dev, &rxe_attr_group); dev->driver_id = RDMA_DRIVER_RXE; - err = ib_register_device(dev, "rxe%d"); + err = ib_register_device(dev, ibdev_name); if (err) pr_warn("%s failed with error %d\n", __func__, err); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index a22822526a62..d02eb75ef282 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -464,7 +464,7 @@ static inline struct rxe_mem *to_rmw(struct ib_mw *mw) return mw ? container_of(mw, struct rxe_mem, ibmw) : NULL; } -int rxe_register_device(struct rxe_dev *rxe); +int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name); void rxe_mc_cleanup(struct rxe_pool_entry *arg); |