57 	struct smc_lo_dmb_node *dmb_node, *tmp_node;  in smc_lo_register_dmb()  local
69 	dmb_node = kzalloc(sizeof(*dmb_node), GFP_KERNEL);  in smc_lo_register_dmb()
70 	if (!dmb_node) {  in smc_lo_register_dmb()
75 	dmb_node->sba_idx = sba_idx;  in smc_lo_register_dmb()
76 	dmb_node->len = dmb->dmb_len;  in smc_lo_register_dmb()
77 	dmb_node->cpu_addr = kzalloc(dmb_node->len, GFP_KERNEL |  in smc_lo_register_dmb()
80 	if (!dmb_node->cpu_addr) {  in smc_lo_register_dmb()
84 	dmb_node->dma_addr = SMC_DMA_ADDR_INVALID;  in smc_lo_register_dmb()
85 	refcount_set(&dmb_node->refcnt, 1);  in smc_lo_register_dmb()
89 	get_random_bytes(&dmb_node->token, sizeof(dmb_node->token));  in smc_lo_register_dmb()
91 	hash_for_each_possible(ldev->dmb_ht, tmp_node, list, dmb_node->token) {  in smc_lo_register_dmb()
92 		if (tmp_node->token == dmb_node->token) {  in smc_lo_register_dmb()
97 	hash_add(ldev->dmb_ht, &dmb_node->list, dmb_node->token);  in smc_lo_register_dmb()
101 	dmb->sba_idx = dmb_node->sba_idx;  in smc_lo_register_dmb()
102 	dmb->dmb_tok = dmb_node->token;  in smc_lo_register_dmb()
103 	dmb->cpu_addr = dmb_node->cpu_addr;  in smc_lo_register_dmb()
104 	dmb->dma_addr = dmb_node->dma_addr;  in smc_lo_register_dmb()
105 	dmb->dmb_len = dmb_node->len;  in smc_lo_register_dmb()
110 	kfree(dmb_node);  in smc_lo_register_dmb()
117 				    struct smc_lo_dmb_node *dmb_node)  in __smc_lo_unregister_dmb()  argument
121 	hash_del(&dmb_node->list);  in __smc_lo_unregister_dmb()
124 	clear_bit(dmb_node->sba_idx, ldev->sba_idx_mask);  in __smc_lo_unregister_dmb()
125 	kvfree(dmb_node->cpu_addr);  in __smc_lo_unregister_dmb()
126 	kfree(dmb_node);  in __smc_lo_unregister_dmb()
134 	struct smc_lo_dmb_node *dmb_node = NULL, *tmp_node;  in smc_lo_unregister_dmb()  local
141 			dmb_node = tmp_node;  in smc_lo_unregister_dmb()
145 	if (!dmb_node) {  in smc_lo_unregister_dmb()
151 	if (refcount_dec_and_test(&dmb_node->refcnt))  in smc_lo_unregister_dmb()
152 		__smc_lo_unregister_dmb(ldev, dmb_node);  in smc_lo_unregister_dmb()
163 	struct smc_lo_dmb_node *dmb_node = NULL, *tmp_node;  in smc_lo_attach_dmb()  local
170 			dmb_node = tmp_node;  in smc_lo_attach_dmb()
174 	if (!dmb_node) {  in smc_lo_attach_dmb()
180 	if (!refcount_inc_not_zero(&dmb_node->refcnt))  in smc_lo_attach_dmb()
187 	dmb->sba_idx = dmb_node->sba_idx;  in smc_lo_attach_dmb()
188 	dmb->dmb_tok = dmb_node->token;  in smc_lo_attach_dmb()
189 	dmb->cpu_addr = dmb_node->cpu_addr;  in smc_lo_attach_dmb()
190 	dmb->dma_addr = dmb_node->dma_addr;  in smc_lo_attach_dmb()
191 	dmb->dmb_len = dmb_node->len;  in smc_lo_attach_dmb()
197 	struct smc_lo_dmb_node *dmb_node = NULL, *tmp_node;  in smc_lo_detach_dmb()  local
204 			dmb_node = tmp_node;  in smc_lo_detach_dmb()
208 	if (!dmb_node) {  in smc_lo_detach_dmb()
214 	if (refcount_dec_and_test(&dmb_node->refcnt))  in smc_lo_detach_dmb()
215 		__smc_lo_unregister_dmb(ldev, dmb_node);  in smc_lo_detach_dmb()