static void test_bucket_stats(struct rhashtable *ht, unsigned int entries) { unsigned int total = 0, chain_len = 0; struct rhashtable_iter hti; struct rhash_head *pos; rhashtable_walk_enter(ht, &hti); rhashtable_walk_start(&hti); while ((pos = rhashtable_walk_next(&hti))) { if (PTR_ERR(pos) == -EAGAIN) { pr_info("Info: encountered resize\n"); chain_len++; continue; } else if (IS_ERR(pos)) { pr_warn("Test failed: rhashtable_walk_next() error: %ld\n", PTR_ERR(pos)); break; } total++; } rhashtable_walk_stop(&hti); rhashtable_walk_exit(&hti); pr_info(" Traversal complete: counted=%u, nelems=%u, entries=%d, table-jumps=%u\n", total, atomic_read(&ht->nelems), entries, chain_len); if (total != atomic_read(&ht->nelems) || total != entries) pr_warn("Test failed: Total count mismatch ^^^"); }
static int seg6_genl_dumphmac(struct sk_buff *skb, struct netlink_callback *cb) { struct rhashtable_iter *iter = (struct rhashtable_iter *)cb->args[0]; struct net *net = sock_net(skb->sk); struct seg6_pernet_data *sdata; struct seg6_hmac_info *hinfo; int ret; sdata = seg6_pernet(net); ret = rhashtable_walk_start(iter); if (ret && ret != -EAGAIN) goto done; for (;;) { hinfo = rhashtable_walk_next(iter); if (IS_ERR(hinfo)) { if (PTR_ERR(hinfo) == -EAGAIN) continue; ret = PTR_ERR(hinfo); goto done; } else if (!hinfo) { break; } ret = __seg6_genl_dumphmac_element(hinfo, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, skb, SEG6_CMD_DUMPHMAC); if (ret) goto done; } ret = skb->len; done: rhashtable_walk_stop(iter); return ret; }