diff options
Diffstat (limited to 'drivers/staging/lustre/lnet/lnet/router.c')
-rw-r--r-- | drivers/staging/lustre/lnet/lnet/router.c | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/drivers/staging/lustre/lnet/lnet/router.c b/drivers/staging/lustre/lnet/lnet/router.c index 88283ca3f860..6504761ca598 100644 --- a/drivers/staging/lustre/lnet/lnet/router.c +++ b/drivers/staging/lustre/lnet/lnet/router.c @@ -238,28 +238,25 @@ lnet_find_net_locked(__u32 net) static void lnet_shuffle_seed(void) { static int seeded; - __u32 lnd_type, seed[2]; - struct timespec64 ts; struct lnet_ni *ni; if (seeded) return; - cfs_get_random_bytes(seed, sizeof(seed)); - /* * Nodes with small feet have little entropy * the NID for this node gives the most entropy in the low bits */ list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) { - lnd_type = LNET_NETTYP(LNET_NIDNET(ni->ni_nid)); + __u32 lnd_type, seed; - if (lnd_type != LOLND) - seed[0] ^= (LNET_NIDADDR(ni->ni_nid) | lnd_type); + lnd_type = LNET_NETTYP(LNET_NIDNET(ni->ni_nid)); + if (lnd_type != LOLND) { + seed = (LNET_NIDADDR(ni->ni_nid) | lnd_type); + add_device_randomness(&seed, sizeof(seed)); + } } - ktime_get_ts64(&ts); - cfs_srand(ts.tv_sec ^ seed[0], ts.tv_nsec ^ seed[1]); seeded = 1; } @@ -277,8 +274,8 @@ lnet_add_route_to_rnet(struct lnet_remotenet *rnet, struct lnet_route *route) len++; } - /* len+1 positions to add a new entry, also prevents division by 0 */ - offset = cfs_rand() % (len + 1); + /* len+1 positions to add a new entry */ + offset = prandom_u32_max(len + 1); list_for_each(e, &rnet->lrn_routes) { if (!offset) break; @@ -318,15 +315,13 @@ lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway, return -EEXIST; /* Assume net, route, all new */ - LIBCFS_ALLOC(route, sizeof(*route)); - LIBCFS_ALLOC(rnet, sizeof(*rnet)); + route = kzalloc(sizeof(*route), GFP_NOFS); + rnet = kzalloc(sizeof(*rnet), GFP_NOFS); if (!route || !rnet) { CERROR("Out of memory creating route %s %d %s\n", libcfs_net2str(net), hops, libcfs_nid2str(gateway)); - if (route) - LIBCFS_FREE(route, sizeof(*route)); - if (rnet) - LIBCFS_FREE(rnet, sizeof(*rnet)); + kfree(route); + kfree(rnet); return -ENOMEM; } @@ -342,8 +337,8 @@ lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway, if (rc) { lnet_net_unlock(LNET_LOCK_EX); - LIBCFS_FREE(route, sizeof(*route)); - LIBCFS_FREE(rnet, sizeof(*rnet)); + kfree(route); + kfree(rnet); if (rc == -EHOSTUNREACH) /* gateway is not on a local net */ return rc; /* ignore the route entry */ @@ -398,11 +393,11 @@ lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway, if (!add_route) { rc = -EEXIST; - LIBCFS_FREE(route, sizeof(*route)); + kfree(route); } if (rnet != rnet2) - LIBCFS_FREE(rnet, sizeof(*rnet)); + kfree(rnet); /* indicate to startup the router checker if configured */ wake_up(&the_lnet.ln_rc_waitq); @@ -520,10 +515,8 @@ lnet_del_route(__u32 net, lnet_nid_t gw_nid) lnet_net_unlock(LNET_LOCK_EX); - LIBCFS_FREE(route, sizeof(*route)); - - if (rnet) - LIBCFS_FREE(rnet, sizeof(*rnet)); + kfree(route); + kfree(rnet); rc = 0; lnet_net_lock(LNET_LOCK_EX); @@ -891,10 +884,9 @@ lnet_destroy_rc_data(struct lnet_rc_data *rcd) lnet_net_unlock(cpt); } - if (rcd->rcd_pinginfo) - LIBCFS_FREE(rcd->rcd_pinginfo, LNET_PINGINFO_SIZE); + kfree(rcd->rcd_pinginfo); - LIBCFS_FREE(rcd, sizeof(*rcd)); + kfree(rcd); } static struct lnet_rc_data * @@ -908,14 +900,14 @@ lnet_create_rc_data_locked(struct lnet_peer *gateway) lnet_net_unlock(gateway->lp_cpt); - LIBCFS_ALLOC(rcd, sizeof(*rcd)); + rcd = kzalloc(sizeof(*rcd), GFP_NOFS); if (!rcd) goto out; LNetInvalidateMDHandle(&rcd->rcd_mdh); INIT_LIST_HEAD(&rcd->rcd_list); - LIBCFS_ALLOC(pi, LNET_PINGINFO_SIZE); + pi = kzalloc(LNET_PINGINFO_SIZE, GFP_NOFS); if (!pi) goto out; @@ -1304,12 +1296,10 @@ rescan: void lnet_destroy_rtrbuf(struct lnet_rtrbuf *rb, int npages) { - int sz = offsetof(struct lnet_rtrbuf, rb_kiov[npages]); - while (--npages >= 0) __free_page(rb->rb_kiov[npages].bv_page); - LIBCFS_FREE(rb, sz); + kfree(rb); } static struct lnet_rtrbuf * @@ -1321,7 +1311,7 @@ lnet_new_rtrbuf(struct lnet_rtrbufpool *rbp, int cpt) struct lnet_rtrbuf *rb; int i; - LIBCFS_CPT_ALLOC(rb, lnet_cpt_table(), cpt, sz); + rb = kzalloc_cpt(sz, GFP_NOFS, cpt); if (!rb) return NULL; @@ -1335,7 +1325,7 @@ lnet_new_rtrbuf(struct lnet_rtrbufpool *rbp, int cpt) while (--i >= 0) __free_page(rb->rb_kiov[i].bv_page); - LIBCFS_FREE(rb, sz); + kfree(rb); return NULL; } |