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Date: Tue, 25 Jul 2017 10:28:11 +0800
From: kbuild test robot <lkp@...el.com>
To: Michael Chan <michael.chan@...adcom.com>
Cc: kbuild-all@...org, davem@...emloft.net, netdev@...r.kernel.org,
Sathya Perla <sathya.perla@...adcom.com>
Subject: Re: [PATCH net-next 08/10] bnxt_en: add support to enable
VF-representors
Hi Sathya,
[auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Michael-Chan/bnxt_en-Update-firmware-interface-spec-to-1-8-0/20170725-094835
config: x86_64-randconfig-x016-201730 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
In file included from include/linux/kernfs.h:13:0,
from include/linux/sysfs.h:15,
from include/linux/kobject.h:21,
from include/linux/pci.h:28,
from drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:9:
drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c: In function 'bnxt_dl_eswitch_mode_set':
>> drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:165:16: error: 'struct bnxt' has no member named 'sriov_lock'
mutex_lock(&bp->sriov_lock);
^
include/linux/mutex.h:164:44: note: in definition of macro 'mutex_lock'
#define mutex_lock(lock) mutex_lock_nested(lock, 0)
^~~~
drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c:194:18: error: 'struct bnxt' has no member named 'sriov_lock'
mutex_unlock(&bp->sriov_lock);
^~
vim +165 drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c
> 9 #include <linux/pci.h>
10 #include <linux/netdevice.h>
11 #include <linux/etherdevice.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/jhash.h>
14
15 #include "bnxt_hsi.h"
16 #include "bnxt.h"
17 #include "bnxt_vfr.h"
18
19 #define CFA_HANDLE_INVALID 0xffff
20
21 static void __bnxt_vf_reps_destroy(struct bnxt *bp)
22 {
23 u16 num_vfs = pci_num_vf(bp->pdev);
24 struct bnxt_vf_rep *vf_rep;
25 int i;
26
27 for (i = 0; i < num_vfs; i++) {
28 vf_rep = bp->vf_reps[i];
29 if (vf_rep) {
30 if (vf_rep->dev) {
31 /* if register_netdev failed, then netdev_ops
32 * would have been set to NULL
33 */
34 if (vf_rep->dev->netdev_ops)
35 unregister_netdev(vf_rep->dev);
36 free_netdev(vf_rep->dev);
37 }
38 }
39 }
40
41 kfree(bp->vf_reps);
42 bp->vf_reps = NULL;
43 }
44
45 void bnxt_vf_reps_destroy(struct bnxt *bp)
46 {
47 bool closed = false;
48
49 if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
50 return;
51
52 if (!bp->vf_reps)
53 return;
54
55 /* Ensure that parent PF's and VF-reps' RX/TX has been quiesced
56 * before proceeding with VF-rep cleanup.
57 */
58 rtnl_lock();
59 if (netif_running(bp->dev)) {
60 bnxt_close_nic(bp, false, false);
61 closed = true;
62 }
63 bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
64
65 if (closed)
66 bnxt_open_nic(bp, false, false);
67 rtnl_unlock();
68
69 /* Need to call vf_reps_destroy() outside of rntl_lock
70 * as unregister_netdev takes rtnl_lock
71 */
72 __bnxt_vf_reps_destroy(bp);
73 }
74
75 /* Use the OUI of the PF's perm addr and report the same mac addr
76 * for the same VF-rep each time
77 */
78 static void bnxt_vf_rep_eth_addr_gen(u8 *src_mac, u16 vf_idx, u8 *mac)
79 {
80 u32 addr;
81
82 ether_addr_copy(mac, src_mac);
83
84 addr = jhash(src_mac, ETH_ALEN, 0) + vf_idx;
85 mac[3] = (u8)(addr & 0xFF);
86 mac[4] = (u8)((addr >> 8) & 0xFF);
87 mac[5] = (u8)((addr >> 16) & 0xFF);
88 }
89
90 static void bnxt_vf_rep_netdev_init(struct bnxt *bp, struct bnxt_vf_rep *vf_rep,
91 struct net_device *dev)
92 {
93 struct net_device *pf_dev = bp->dev;
94
95 /* Just inherit all the featues of the parent PF as the VF-R
96 * uses the RX/TX rings of the parent PF
97 */
98 dev->hw_features = pf_dev->hw_features;
99 dev->gso_partial_features = pf_dev->gso_partial_features;
100 dev->vlan_features = pf_dev->vlan_features;
101 dev->hw_enc_features = pf_dev->hw_enc_features;
102 dev->features |= pf_dev->features;
103 bnxt_vf_rep_eth_addr_gen(bp->pf.mac_addr, vf_rep->vf_idx,
104 dev->perm_addr);
105 ether_addr_copy(dev->dev_addr, dev->perm_addr);
106 }
107
108 static int bnxt_vf_reps_create(struct bnxt *bp)
109 {
110 u16 num_vfs = pci_num_vf(bp->pdev);
111 struct bnxt_vf_rep *vf_rep;
112 struct net_device *dev;
113 int rc, i;
114
115 bp->vf_reps = kcalloc(num_vfs, sizeof(vf_rep), GFP_KERNEL);
116 if (!bp->vf_reps)
117 return -ENOMEM;
118
119 for (i = 0; i < num_vfs; i++) {
120 dev = alloc_etherdev(sizeof(*vf_rep));
121 if (!dev) {
122 rc = -ENOMEM;
123 goto err;
124 }
125
126 vf_rep = netdev_priv(dev);
127 bp->vf_reps[i] = vf_rep;
128 vf_rep->dev = dev;
129 vf_rep->bp = bp;
130 vf_rep->vf_idx = i;
131 vf_rep->tx_cfa_action = CFA_HANDLE_INVALID;
132
133 bnxt_vf_rep_netdev_init(bp, vf_rep, dev);
134 rc = register_netdev(dev);
135 if (rc) {
136 /* no need for unregister_netdev in cleanup */
137 dev->netdev_ops = NULL;
138 goto err;
139 }
140 }
141
142 bp->eswitch_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
143 return 0;
144
145 err:
146 netdev_info(bp->dev, "%s error=%d", __func__, rc);
147 __bnxt_vf_reps_destroy(bp);
148 return rc;
149 }
150
151 /* Devlink related routines */
152 static int bnxt_dl_eswitch_mode_get(struct devlink *devlink, u16 *mode)
153 {
154 struct bnxt *bp = bnxt_get_bp_from_dl(devlink);
155
156 *mode = bp->eswitch_mode;
157 return 0;
158 }
159
160 static int bnxt_dl_eswitch_mode_set(struct devlink *devlink, u16 mode)
161 {
162 struct bnxt *bp = bnxt_get_bp_from_dl(devlink);
163 int rc = 0;
164
> 165 mutex_lock(&bp->sriov_lock);
166 if (bp->eswitch_mode == mode) {
167 netdev_info(bp->dev, "already in %s eswitch mode",
168 mode == DEVLINK_ESWITCH_MODE_LEGACY ?
169 "legacy" : "switchdev");
170 rc = -EINVAL;
171 goto done;
172 }
173
174 switch (mode) {
175 case DEVLINK_ESWITCH_MODE_LEGACY:
176 bnxt_vf_reps_destroy(bp);
177 break;
178
179 case DEVLINK_ESWITCH_MODE_SWITCHDEV:
180 if (pci_num_vf(bp->pdev) == 0) {
181 netdev_info(bp->dev,
182 "Enable VFs before setting swtichdev mode");
183 rc = -EPERM;
184 goto done;
185 }
186 rc = bnxt_vf_reps_create(bp);
187 break;
188
189 default:
190 rc = -EINVAL;
191 goto done;
192 }
193 done:
194 mutex_unlock(&bp->sriov_lock);
195 return rc;
196 }
197
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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