When adding new radio via HWSIM_CMD_NEW_RADIO then listeners on the
multicast group "config" are informed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@xxxxxxxxxxxxxxx>
---
drivers/net/wireless/mac80211_hwsim.c | 141 +++++++++++++++++++++++++++++-----
1 file changed, 123 insertions(+), 18 deletions(-)
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index babbdc1..74bc1db 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -476,6 +476,14 @@ static struct genl_family hwsim_genl_family = {
.maxattr = HWSIM_ATTR_MAX,
};
+enum hwsim_multicast_groups {
+ HWSIM_MCGRP_CONFIG,
+};
+
+static const struct genl_multicast_group hwsim_mcgrps[] = {
+ [HWSIM_MCGRP_CONFIG] = { .name = "config", },
+};
+
/* MAC80211_HWSIM netlink policy */
static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
@@ -1943,10 +1951,101 @@ static const struct ieee80211_ops mac80211_hwsim_ops = {
static struct ieee80211_ops mac80211_hwsim_mchan_ops;
-static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
- const struct ieee80211_regdomain *regd,
- bool reg_strict, bool p2p_device,
- bool use_chanctx)
+static void mcast_msg(struct sk_buff *mcast_skb, struct genl_info *info)
+{
+ if (info)
+ genl_notify(&hwsim_genl_family, mcast_skb,
+ genl_info_net(info), info->snd_portid,
+ HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
+ else
+ genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
+ HWSIM_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static void mcast_new_radio(int id, struct genl_info *info,
+ int channels, const char *reg_alpha2,
+ const struct ieee80211_regdomain *regd,
+ bool reg_strict, bool p2p_device,
+ bool use_chanctx)
+{
+ struct sk_buff *mcast_skb;
+ void *data;
+ int ret;
+
+ mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!mcast_skb)
+ return;
+
+ data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
+ HWSIM_CMD_NEW_RADIO);
+ if (!data)
+ goto error;
+
+ ret = nla_put_u32(mcast_skb, HWSIM_ATTR_RADIO_ID, id);
+ if (ret < 0)
+ goto error;
+
+ if (channels) {
+ ret = nla_put_u32(mcast_skb, HWSIM_ATTR_CHANNELS, channels);
+ if (ret < 0)
+ goto error;
+ }
+
+ if (reg_alpha2) {
+ ret = nla_put(mcast_skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
+ reg_alpha2);
+ if (ret < 0)
+ goto error;
+ }
+
+ if (regd) {
+ int i;
+
+ for (i = 0; hwsim_world_regdom_custom[i] != regd &&
+ i < ARRAY_SIZE(hwsim_world_regdom_custom); i++)
+ ;
+
+ if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) {
+ ret = nla_put_u32(mcast_skb, HWSIM_ATTR_REG_CUSTOM_REG,
+ i);
+ if (ret < 0)
+ goto error;
+ }
+ }
+
+ if (reg_strict) {
+ ret = nla_put_flag(mcast_skb, HWSIM_ATTR_REG_STRICT_REG);
+ if (ret < 0)
+ goto error;
+ }
+
+ if (p2p_device) {
+ ret = nla_put_flag(mcast_skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
+ if (ret < 0)
+ goto error;
+ }
+
+ if (use_chanctx) {
+ ret = nla_put_flag(mcast_skb, HWSIM_ATTR_USE_CHANCTX);
+ if (ret < 0)
+ goto error;
+ }
+
+ genlmsg_end(mcast_skb, data);
+
+ mcast_msg(mcast_skb, info);
+
+ return;
+
+error:
+ nlmsg_free(mcast_skb);
+}
+
+static int mac80211_hwsim_new_radio(struct genl_info *info,
+ int channels, const char *reg_alpha2,
+ const struct ieee80211_regdomain *regd,
+ bool reg_strict, bool p2p_device,
+ bool use_chanctx)
{
int err;
u8 addr[ETH_ALEN];
@@ -2180,6 +2279,10 @@ static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
list_add_tail(&data->list, &hwsim_radios);
spin_unlock_bh(&hwsim_radio_lock);
+ if (idx > 0)
+ mcast_new_radio(idx, info, channels, reg_alpha2,
+ regd, reg_strict, p2p_device, use_chanctx);
+
return idx;
failed_hw:
@@ -2427,7 +2530,7 @@ static int hwsim_register_received_nl(struct sk_buff *skb_2,
return 0;
}
-static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
+static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
unsigned int chans = channels;
const char *alpha2 = NULL;
@@ -2455,8 +2558,8 @@ static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
regd = hwsim_world_regdom_custom[idx];
}
- return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
- p2p_device, use_chanctx);
+ return mac80211_hwsim_new_radio(info, chans, alpha2, regd, reg_strict,
+ p2p_device, use_chanctx);
}
static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
@@ -2501,9 +2604,9 @@ static const struct genl_ops hwsim_ops[] = {
.doit = hwsim_tx_info_frame_received_nl,
},
{
- .cmd = HWSIM_CMD_CREATE_RADIO,
+ .cmd = HWSIM_CMD_NEW_RADIO,
.policy = hwsim_genl_policy,
- .doit = hwsim_create_radio_nl,
+ .doit = hwsim_new_radio_nl,
.flags = GENL_ADMIN_PERM,
},
{
@@ -2542,7 +2645,9 @@ static int hwsim_init_netlink(void)
printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
- rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
+ rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
+ hwsim_ops,
+ hwsim_mcgrps);
if (rc)
goto failure;
@@ -2603,6 +2708,10 @@ static int __init init_mac80211_hwsim(void)
goto out_unregister_driver;
}
+ err = hwsim_init_netlink();
+ if (err < 0)
+ goto out_unregister_driver;
+
for (i = 0; i < radios; i++) {
const char *reg_alpha2 = NULL;
const struct ieee80211_regdomain *regd = NULL;
@@ -2673,10 +2782,10 @@ static int __init init_mac80211_hwsim(void)
break;
}
- err = mac80211_hwsim_create_radio(channels, reg_alpha2,
- regd, reg_strict,
- support_p2p_device,
- channels > 1);
+ err = mac80211_hwsim_new_radio(NULL, channels, reg_alpha2,
+ regd, reg_strict,
+ support_p2p_device,
+ channels > 1);
if (err < 0)
goto out_free_radios;
}
@@ -2702,10 +2811,6 @@ static int __init init_mac80211_hwsim(void)
}
rtnl_unlock();
- err = hwsim_init_netlink();
- if (err < 0)
- goto out_free_mon;
-
return 0;
out_free_mon:
--
1.8.3.1
--
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