From 6cc2c8e535ec19153714cee62e11e4d9ac2ea953 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Tue, 12 Feb 2019 21:12:55 -0700 Subject: RDMA/rxe: Add ib_device_get_by_name() and use it in rxe rxe has an open coded version of this that is not as safe as the core version. This lets us eliminate the internal device list entirely from rxe. Signed-off-by: Jason Gunthorpe --- drivers/infiniband/sw/rxe/rxe.c | 3 --- drivers/infiniband/sw/rxe/rxe.h | 2 -- drivers/infiniband/sw/rxe/rxe_net.c | 22 ---------------------- drivers/infiniband/sw/rxe/rxe_sysfs.c | 9 ++++----- drivers/infiniband/sw/rxe/rxe_verbs.h | 1 - 5 files changed, 4 insertions(+), 33 deletions(-) (limited to 'drivers/infiniband/sw/rxe') diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c index cd93c546c008..08a45ce9cab5 100644 --- a/drivers/infiniband/sw/rxe/rxe.c +++ b/drivers/infiniband/sw/rxe/rxe.c @@ -69,8 +69,6 @@ void rxe_dealloc(struct ib_device *ib_dev) if (rxe->tfm) crypto_free_shash(rxe->tfm); - - list_del(&rxe->list); } /* initialize rxe device parameters */ @@ -275,7 +273,6 @@ static int rxe_init(struct rxe_dev *rxe) spin_lock_init(&rxe->mmap_offset_lock); spin_lock_init(&rxe->pending_lock); INIT_LIST_HEAD(&rxe->pending_mmaps); - INIT_LIST_HEAD(&rxe->list); mutex_init(&rxe->usdev_lock); diff --git a/drivers/infiniband/sw/rxe/rxe.h b/drivers/infiniband/sw/rxe/rxe.h index ce4bf05cd855..63b3b89b894a 100644 --- a/drivers/infiniband/sw/rxe/rxe.h +++ b/drivers/infiniband/sw/rxe/rxe.h @@ -99,8 +99,6 @@ int rxe_add(struct rxe_dev *rxe, unsigned int mtu); void rxe_rcv(struct sk_buff *skb); -struct rxe_dev *get_rxe_by_name(const char *name); - /* The caller must do a matching ib_device_put(&dev->ib_dev) */ static inline struct rxe_dev *rxe_get_dev_from_net(struct net_device *ndev) { diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c index d56a967ff90b..d6dfbcf6a47e 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -45,25 +45,6 @@ #include "rxe_net.h" #include "rxe_loc.h" -static LIST_HEAD(rxe_dev_list); -static DEFINE_SPINLOCK(dev_list_lock); /* spinlock for device list */ - -struct rxe_dev *get_rxe_by_name(const char *name) -{ - struct rxe_dev *rxe; - struct rxe_dev *found = NULL; - - spin_lock_bh(&dev_list_lock); - list_for_each_entry(rxe, &rxe_dev_list, list) { - if (!strcmp(name, dev_name(&rxe->ib_dev.dev))) { - found = rxe; - break; - } - } - spin_unlock_bh(&dev_list_lock); - return found; -} - static struct rxe_recv_sockets recv_sockets; struct device *rxe_dma_device(struct rxe_dev *rxe) @@ -553,9 +534,6 @@ struct rxe_dev *rxe_net_add(struct net_device *ndev) return NULL; } - spin_lock_bh(&dev_list_lock); - list_add_tail(&rxe->list, &rxe_dev_list); - spin_unlock_bh(&dev_list_lock); return rxe; } diff --git a/drivers/infiniband/sw/rxe/rxe_sysfs.c b/drivers/infiniband/sw/rxe/rxe_sysfs.c index c8630638cd57..d51b55b0a311 100644 --- a/drivers/infiniband/sw/rxe/rxe_sysfs.c +++ b/drivers/infiniband/sw/rxe/rxe_sysfs.c @@ -101,7 +101,7 @@ static int rxe_param_set_remove(const char *val, const struct kernel_param *kp) { int len; char intf[32]; - struct rxe_dev *rxe; + struct ib_device *ib_dev; len = sanitize_arg(val, intf, sizeof(intf)); if (!len) { @@ -115,14 +115,13 @@ static int rxe_param_set_remove(const char *val, const struct kernel_param *kp) return 0; } - rxe = get_rxe_by_name(intf); - - if (!rxe) { + ib_dev = ib_device_get_by_name(intf, RDMA_DRIVER_RXE); + if (!ib_dev) { pr_err("not configured on %s\n", intf); return -EINVAL; } - ib_unregister_device(&rxe->ib_dev); + ib_unregister_device_and_put(ib_dev); return 0; } diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index ad5574d8e8ba..a22822526a62 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -411,7 +411,6 @@ struct rxe_dev { atomic64_t stats_counters[RXE_NUM_OF_COUNTERS]; struct rxe_port port; - struct list_head list; struct crypto_shash *tfm; }; -- cgit v1.2.3-59-g8ed1b