1
2
3
4#include "cxgb4.h"
5
6static int cxgb4_mps_ref_dec_by_mac(struct adapter *adap,
7 const u8 *addr, const u8 *mask)
8{
9 u8 bitmask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
10 struct mps_entries_ref *mps_entry, *tmp;
11 int ret = -EINVAL;
12
13 spin_lock_bh(&adap->mps_ref_lock);
14 list_for_each_entry_safe(mps_entry, tmp, &adap->mps_ref, list) {
15 if (ether_addr_equal(mps_entry->addr, addr) &&
16 ether_addr_equal(mps_entry->mask, mask ? mask : bitmask)) {
17 if (!refcount_dec_and_test(&mps_entry->refcnt)) {
18 spin_unlock_bh(&adap->mps_ref_lock);
19 return -EBUSY;
20 }
21 list_del(&mps_entry->list);
22 kfree(mps_entry);
23 ret = 0;
24 break;
25 }
26 }
27 spin_unlock_bh(&adap->mps_ref_lock);
28 return ret;
29}
30
31static int cxgb4_mps_ref_dec(struct adapter *adap, u16 idx)
32{
33 struct mps_entries_ref *mps_entry, *tmp;
34 int ret = -EINVAL;
35
36 spin_lock(&adap->mps_ref_lock);
37 list_for_each_entry_safe(mps_entry, tmp, &adap->mps_ref, list) {
38 if (mps_entry->idx == idx) {
39 if (!refcount_dec_and_test(&mps_entry->refcnt)) {
40 spin_unlock(&adap->mps_ref_lock);
41 return -EBUSY;
42 }
43 list_del(&mps_entry->list);
44 kfree(mps_entry);
45 ret = 0;
46 break;
47 }
48 }
49 spin_unlock(&adap->mps_ref_lock);
50 return ret;
51}
52
53static int cxgb4_mps_ref_inc(struct adapter *adap, const u8 *mac_addr,
54 u16 idx, const u8 *mask)
55{
56 u8 bitmask[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
57 struct mps_entries_ref *mps_entry;
58 int ret = 0;
59
60 spin_lock_bh(&adap->mps_ref_lock);
61 list_for_each_entry(mps_entry, &adap->mps_ref, list) {
62 if (mps_entry->idx == idx) {
63 refcount_inc(&mps_entry->refcnt);
64 goto unlock;
65 }
66 }
67 mps_entry = kzalloc(sizeof(*mps_entry), GFP_ATOMIC);
68 if (!mps_entry) {
69 ret = -ENOMEM;
70 goto unlock;
71 }
72 ether_addr_copy(mps_entry->mask, mask ? mask : bitmask);
73 ether_addr_copy(mps_entry->addr, mac_addr);
74 mps_entry->idx = idx;
75 refcount_set(&mps_entry->refcnt, 1);
76 list_add_tail(&mps_entry->list, &adap->mps_ref);
77unlock:
78 spin_unlock_bh(&adap->mps_ref_lock);
79 return ret;
80}
81
82int cxgb4_free_mac_filt(struct adapter *adap, unsigned int viid,
83 unsigned int naddr, const u8 **addr, bool sleep_ok)
84{
85 int ret, i;
86
87 for (i = 0; i < naddr; i++) {
88 if (!cxgb4_mps_ref_dec_by_mac(adap, addr[i], NULL)) {
89 ret = t4_free_mac_filt(adap, adap->mbox, viid,
90 1, &addr[i], sleep_ok);
91 if (ret < 0)
92 return ret;
93 }
94 }
95
96
97 return naddr;
98}
99
100int cxgb4_alloc_mac_filt(struct adapter *adap, unsigned int viid,
101 bool free, unsigned int naddr, const u8 **addr,
102 u16 *idx, u64 *hash, bool sleep_ok)
103{
104 int ret, i;
105
106 ret = t4_alloc_mac_filt(adap, adap->mbox, viid, free,
107 naddr, addr, idx, hash, sleep_ok);
108 if (ret < 0)
109 return ret;
110
111 for (i = 0; i < naddr; i++) {
112 if (idx[i] != 0xffff) {
113 if (cxgb4_mps_ref_inc(adap, addr[i], idx[i], NULL)) {
114 ret = -ENOMEM;
115 goto error;
116 }
117 }
118 }
119
120 goto out;
121error:
122 cxgb4_free_mac_filt(adap, viid, naddr, addr, sleep_ok);
123
124out:
125
126 return ret;
127}
128
129int cxgb4_update_mac_filt(struct port_info *pi, unsigned int viid,
130 int *tcam_idx, const u8 *addr,
131 bool persistent, u8 *smt_idx)
132{
133 int ret;
134
135 ret = cxgb4_change_mac(pi, viid, tcam_idx,
136 addr, persistent, smt_idx);
137 if (ret < 0)
138 return ret;
139
140 cxgb4_mps_ref_inc(pi->adapter, addr, *tcam_idx, NULL);
141 return ret;
142}
143
144int cxgb4_free_raw_mac_filt(struct adapter *adap,
145 unsigned int viid,
146 const u8 *addr,
147 const u8 *mask,
148 unsigned int idx,
149 u8 lookup_type,
150 u8 port_id,
151 bool sleep_ok)
152{
153 int ret = 0;
154
155 if (!cxgb4_mps_ref_dec(adap, idx))
156 ret = t4_free_raw_mac_filt(adap, viid, addr,
157 mask, idx, lookup_type,
158 port_id, sleep_ok);
159
160 return ret;
161}
162
163int cxgb4_alloc_raw_mac_filt(struct adapter *adap,
164 unsigned int viid,
165 const u8 *addr,
166 const u8 *mask,
167 unsigned int idx,
168 u8 lookup_type,
169 u8 port_id,
170 bool sleep_ok)
171{
172 int ret;
173
174 ret = t4_alloc_raw_mac_filt(adap, viid, addr,
175 mask, idx, lookup_type,
176 port_id, sleep_ok);
177 if (ret < 0)
178 return ret;
179
180 if (cxgb4_mps_ref_inc(adap, addr, ret, mask)) {
181 ret = -ENOMEM;
182 t4_free_raw_mac_filt(adap, viid, addr,
183 mask, idx, lookup_type,
184 port_id, sleep_ok);
185 }
186
187 return ret;
188}
189
190int cxgb4_free_encap_mac_filt(struct adapter *adap, unsigned int viid,
191 int idx, bool sleep_ok)
192{
193 int ret = 0;
194
195 if (!cxgb4_mps_ref_dec(adap, idx))
196 ret = t4_free_encap_mac_filt(adap, viid, idx, sleep_ok);
197
198 return ret;
199}
200
201int cxgb4_alloc_encap_mac_filt(struct adapter *adap, unsigned int viid,
202 const u8 *addr, const u8 *mask,
203 unsigned int vni, unsigned int vni_mask,
204 u8 dip_hit, u8 lookup_type, bool sleep_ok)
205{
206 int ret;
207
208 ret = t4_alloc_encap_mac_filt(adap, viid, addr, mask, vni, vni_mask,
209 dip_hit, lookup_type, sleep_ok);
210 if (ret < 0)
211 return ret;
212
213 if (cxgb4_mps_ref_inc(adap, addr, ret, mask)) {
214 ret = -ENOMEM;
215 t4_free_encap_mac_filt(adap, viid, ret, sleep_ok);
216 }
217 return ret;
218}
219
220int cxgb4_init_mps_ref_entries(struct adapter *adap)
221{
222 spin_lock_init(&adap->mps_ref_lock);
223 INIT_LIST_HEAD(&adap->mps_ref);
224
225 return 0;
226}
227
228void cxgb4_free_mps_ref_entries(struct adapter *adap)
229{
230 struct mps_entries_ref *mps_entry, *tmp;
231
232 if (list_empty(&adap->mps_ref))
233 return;
234
235 spin_lock(&adap->mps_ref_lock);
236 list_for_each_entry_safe(mps_entry, tmp, &adap->mps_ref, list) {
237 list_del(&mps_entry->list);
238 kfree(mps_entry);
239 }
240 spin_unlock(&adap->mps_ref_lock);
241}
242
