From c449981c4761f16d57db70834bee0380c7c97f18 Mon Sep 17 00:00:00 2001 From: Patrik Flykt Date: Wed, 12 Nov 2014 16:42:39 +0200 Subject: [PATCH] mac80211-hwsim: Factor out netlink attribute appending Factor out netlink message attribute appending in order to reuse it with later code. As a result move netlink skb allocation to the calling function. Signed-off-by: Patrik Flykt Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 60 +++++++++++++-------------- 1 file changed, 30 insertions(+), 30 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index c88a21acda64..3cb825b3ef17 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -2123,36 +2123,26 @@ static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb, HWSIM_MCGRP_CONFIG, GFP_KERNEL); } -static struct sk_buff *build_radio_msg(int cmd, int id, - struct hwsim_new_radio_params *param) +static int append_radio_msg(struct sk_buff *skb, int id, + struct hwsim_new_radio_params *param) { - struct sk_buff *skb; - void *data; int ret; - skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!skb) - return NULL; - - data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0, cmd); - if (!data) - goto error; - ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id); if (ret < 0) - goto error; + return ret; if (param->channels) { ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels); if (ret < 0) - goto error; + return ret; } if (param->reg_alpha2) { ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2, param->reg_alpha2); if (ret < 0) - goto error; + return ret; } if (param->regd) { @@ -2165,54 +2155,64 @@ static struct sk_buff *build_radio_msg(int cmd, int id, if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) { ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i); if (ret < 0) - goto error; + return ret; } } if (param->reg_strict) { ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG); if (ret < 0) - goto error; + return ret; } if (param->p2p_device) { ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE); if (ret < 0) - goto error; + return ret; } if (param->use_chanctx) { ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX); if (ret < 0) - goto error; + return ret; } if (param->hwname) { ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(param->hwname), param->hwname); if (ret < 0) - goto error; + return ret; } - genlmsg_end(skb, data); - - return skb; - -error: - nlmsg_free(skb); - return NULL; + return 0; } -static void hswim_mcast_new_radio(int id, struct genl_info *info, +static void hwsim_mcast_new_radio(int id, struct genl_info *info, struct hwsim_new_radio_params *param) { struct sk_buff *mcast_skb; + void *data; - mcast_skb = build_radio_msg(HWSIM_CMD_NEW_RADIO, id, param); + 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 out_err; + + if (append_radio_msg(mcast_skb, id, param) < 0) + goto out_err; + + genlmsg_end(mcast_skb, data); + hwsim_mcast_config_msg(mcast_skb, info); + return; + +out_err: + genlmsg_cancel(mcast_skb, data); + nlmsg_free(mcast_skb); } static int mac80211_hwsim_new_radio(struct genl_info *info, @@ -2459,7 +2459,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info, spin_unlock_bh(&hwsim_radio_lock); if (idx > 0) - hswim_mcast_new_radio(idx, info, param); + hwsim_mcast_new_radio(idx, info, param); return idx; -- 2.20.1