t4_l2t.c (de483253) t4_l2t.c (3dde7c95)
1/*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at

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134 struct l2t_entry l2tab[];
135};
136
137#define VLAN_NONE 0xfff
138#define SA(x) ((struct sockaddr *)(x))
139#define SIN(x) ((struct sockaddr_in *)(x))
140#define SINADDR(x) (SIN(x)->sin_addr.s_addr)
141#define atomic_read(x) atomic_add_int_nv(x, 0)
1/*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at

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134 struct l2t_entry l2tab[];
135};
136
137#define VLAN_NONE 0xfff
138#define SA(x) ((struct sockaddr *)(x))
139#define SIN(x) ((struct sockaddr_in *)(x))
140#define SINADDR(x) (SIN(x)->sin_addr.s_addr)
141#define atomic_read(x) atomic_add_int_nv(x, 0)
142
143#ifdef TCP_OFFLOAD_ENABLE
142/*
143 * Allocate a free L2T entry.
144 * Must be called with l2t_data.lockatomic_load_acq_int held.
145 */
146static struct l2t_entry *
147alloc_l2e(struct l2t_data *d)
148{
149 struct l2t_entry *end, *e, **p;

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214
215 (void) t4_mgmt_tx(sc, m);
216
217 if (sync && e->state != L2T_STATE_SWITCHING)
218 e->state = L2T_STATE_SYNC_WRITE;
219
220 return (0);
221}
144/*
145 * Allocate a free L2T entry.
146 * Must be called with l2t_data.lockatomic_load_acq_int held.
147 */
148static struct l2t_entry *
149alloc_l2e(struct l2t_data *d)
150{
151 struct l2t_entry *end, *e, **p;

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216
217 (void) t4_mgmt_tx(sc, m);
218
219 if (sync && e->state != L2T_STATE_SWITCHING)
220 e->state = L2T_STATE_SYNC_WRITE;
221
222 return (0);
223}
224#endif
222
223struct l2t_data *
224t4_init_l2t(struct adapter *sc)
225{
226 int i, l2t_size;
227 struct l2t_data *d;
228
229 l2t_size = sc->vres.l2t.size;

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243 for (i = 0; i < l2t_size; i++) {
244 /* LINTED: E_ASSIGN_NARROW_CONV */
245 d->l2tab[i].idx = i;
246 d->l2tab[i].state = L2T_STATE_UNUSED;
247 mutex_init(&d->l2tab[i].lock, NULL, MUTEX_DRIVER, NULL);
248 (void) atomic_swap_uint(&d->l2tab[i].refcnt, 0);
249 }
250
225
226struct l2t_data *
227t4_init_l2t(struct adapter *sc)
228{
229 int i, l2t_size;
230 struct l2t_data *d;
231
232 l2t_size = sc->vres.l2t.size;

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246 for (i = 0; i < l2t_size; i++) {
247 /* LINTED: E_ASSIGN_NARROW_CONV */
248 d->l2tab[i].idx = i;
249 d->l2tab[i].state = L2T_STATE_UNUSED;
250 mutex_init(&d->l2tab[i].lock, NULL, MUTEX_DRIVER, NULL);
251 (void) atomic_swap_uint(&d->l2tab[i].refcnt, 0);
252 }
253
254#ifdef TCP_OFFLOAD_ENABLE
251 (void) t4_register_cpl_handler(sc, CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
255 (void) t4_register_cpl_handler(sc, CPL_L2T_WRITE_RPL, do_l2t_write_rpl);
256#endif
252
253 return (d);
254}
255
256int
257t4_free_l2t(struct l2t_data *d)
258{
259 int i;
260
261 for (i = 0; i < L2T_SIZE; i++)
262 mutex_destroy(&d->l2tab[i].lock);
263 rw_destroy(&d->lock);
264 kmem_free(d, sizeof (*d));
265
266 return (0);
267}
268
257
258 return (d);
259}
260
261int
262t4_free_l2t(struct l2t_data *d)
263{
264 int i;
265
266 for (i = 0; i < L2T_SIZE; i++)
267 mutex_destroy(&d->l2tab[i].lock);
268 rw_destroy(&d->lock);
269 kmem_free(d, sizeof (*d));
270
271 return (0);
272}
273
269#ifndef TCP_OFFLOAD_DISABLE
274#ifdef TCP_OFFLOAD_ENABLE
270static inline void
271l2t_hold(struct l2t_data *d, struct l2t_entry *e)
272{
273 if (atomic_inc_uint_nv(&e->refcnt) == 1) /* 0 -> 1 transition */
274 atomic_dec_uint(&d->nfree);
275}
276
277/*

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276l2t_hold(struct l2t_data *d, struct l2t_entry *e)
277{
278 if (atomic_inc_uint_nv(&e->refcnt) == 1) /* 0 -> 1 transition */
279 atomic_dec_uint(&d->nfree);
280}
281
282/*

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