1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
63  * the TOE and the sockets already hold references to the interfaces and the
76 	rw_assert(&s->lock, RA_WLOCKED);  in t4_find_or_alloc_sme()
77 	for (e = &s->smtab[0], end = &s->smtab[s->smt_size]; e != end; ++e) {  in t4_find_or_alloc_sme()
78 		if (atomic_load_acq_int(&e->refcnt) == 0) {  in t4_find_or_alloc_sme()
82 			if (e->state == SMT_STATE_SWITCHING) {  in t4_find_or_alloc_sme()
85 				 * re-use it?  in t4_find_or_alloc_sme()
87 				if (memcmp(e->smac, smac, ETHER_ADDR_LEN) == 0)  in t4_find_or_alloc_sme()
99 	e->state = SMT_STATE_UNUSED;  in t4_find_or_alloc_sme()
101 	atomic_add_int(&e->refcnt, 1);  in t4_find_or_alloc_sme()
117 	u8 row;  in t4_write_sme()  local
119 	mtx_assert(&e->lock, MA_OWNED);  in t4_write_sme()
121 	MPASS(e->wrq != NULL);  in t4_write_sme()
122 	wrq = e->wrq;  in t4_write_sme()
123 	sc = wrq->adapter;  in t4_write_sme()
124 	MPASS(wrq->adapter != NULL);  in t4_write_sme()
125 	s = sc->smt;  in t4_write_sme()
136 		/* Each row contains an SMAC pair.  in t4_write_sme()
137 		 * LSB selects the SMAC entry within a row  in t4_write_sme()
139 		row = (e->idx >> 1);  in t4_write_sme()
140 		if (e->idx & 1) {  in t4_write_sme()
141 			req->pfvf1 = 0x0;  in t4_write_sme()
142 			memcpy(req->src_mac1, e->smac, ETHER_ADDR_LEN);  in t4_write_sme()
144 			 * at prev index from smt-tab.  in t4_write_sme()
146 			req->pfvf0 = 0x0;  in t4_write_sme()
147 			memcpy(req->src_mac0, s->smtab[e->idx - 1].smac,  in t4_write_sme()
150 			req->pfvf0 = 0x0;  in t4_write_sme()
151 			memcpy(req->src_mac0, e->smac, ETHER_ADDR_LEN);  in t4_write_sme()
153 			 * at next index from smt-tab  in t4_write_sme()
155 			req->pfvf1 = 0x0;  in t4_write_sme()
156 			memcpy(req->src_mac1, s->smtab[e->idx + 1].smac,  in t4_write_sme()
167 		/* fill pfvf0/src_mac0 from smt-tab */  in t4_write_sme()
168 		req->pfvf0 = 0x0;  in t4_write_sme()
169 		memcpy(req->src_mac0, s->smtab[e->idx].smac, ETHER_ADDR_LEN);  in t4_write_sme()
170 		row = e->idx;  in t4_write_sme()
172 	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, e->idx |  in t4_write_sme()
173 					V_TID_QID(e->iqid)));  in t4_write_sme()
174 	req->params = htonl(V_SMTW_NORPL(0) |  in t4_write_sme()
175 			V_SMTW_IDX(row) |  in t4_write_sme()
192 	rw_wlock(&s->lock);  in t4_smt_alloc_switching()
194 	rw_wunlock(&s->lock);  in t4_smt_alloc_switching()
208 	if (atomic_load_acq_int(&e->refcnt) == 1) {  in t4_smt_set_switching()
210 		mtx_lock(&e->lock);  in t4_smt_set_switching()
211 		e->wrq = &sc->sge.ctrlq[0];  in t4_smt_set_switching()
212 		e->iqid = sc->sge.fwq.abs_id;  in t4_smt_set_switching()
213 		e->pfvf =  pfvf;  in t4_smt_set_switching()
214 		e->state = SMT_STATE_SWITCHING;  in t4_smt_set_switching()
215 		memcpy(e->smac, smac, ETHER_ADDR_LEN);  in t4_smt_set_switching()
217 		mtx_unlock(&e->lock);  in t4_smt_set_switching()
235 	s->smt_size = smt_size;  in t4_init_smt()
236 	rw_init(&s->lock, "SMT");  in t4_init_smt()
239 		struct smt_entry *e = &s->smtab[i];  in t4_init_smt()
241 		e->idx = i;  in t4_init_smt()
242 		e->state = SMT_STATE_UNUSED;  in t4_init_smt()
243 		mtx_init(&e->lock, "SMT_E", NULL, MTX_DEF);  in t4_init_smt()
244 		atomic_store_rel_int(&e->refcnt, 0);  in t4_init_smt()
247 	sc->smt = s;  in t4_init_smt()
257 	for (i = 0; i < s->smt_size; i++)  in t4_free_smt()
258 		mtx_destroy(&s->smtab[i].lock);  in t4_free_smt()
259 	rw_destroy(&s->lock);  in t4_free_smt()
269 	struct adapter *sc = iq->adapter;  in do_smt_write_rpl()
274 	if (__predict_false(rpl->status != CPL_ERR_NONE)) {  in do_smt_write_rpl()
275 		struct smt_entry *e = &sc->smt->smtab[smtidx];  in do_smt_write_rpl()
278 		    rpl->status, smtidx);  in do_smt_write_rpl()
279 		mtx_lock(&e->lock);  in do_smt_write_rpl()
280 		e->state = SMT_STATE_ERROR;  in do_smt_write_rpl()
281 		mtx_unlock(&e->lock);  in do_smt_write_rpl()
291 	switch (e->state) {  in smt_state()
302 	struct smt_data *smt = sc->smt;  in sysctl_smt()
318 	e = &smt->smtab[0];  in sysctl_smt()
319 	for (i = 0; i < smt->smt_size; i++, e++) {  in sysctl_smt()
320 		mtx_lock(&e->lock);  in sysctl_smt()
321 		if (e->state == SMT_STATE_UNUSED)  in sysctl_smt()
331 			   e->idx, e->smac[0], e->smac[1], e->smac[2],  in sysctl_smt()
332 			   e->smac[3], e->smac[4], e->smac[5],  in sysctl_smt()
333 			   smt_state(e), atomic_load_acq_int(&e->refcnt));  in sysctl_smt()
335 		mtx_unlock(&e->lock);  in sysctl_smt()