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mac80211_hwsim: Stop using NLA_PUT*().

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These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-04-01 21:03:30 -04:00
parent d33e152e1e
commit 633c938940
1 changed files with 15 additions and 9 deletions
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24
drivers/net/wireless/mac80211_hwsim.c
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@ -582,11 +582,13 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
goto nla_put_failure;
}
NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
sizeof(struct mac_address), data->addresses[1].addr);
if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
sizeof(struct mac_address), data->addresses[1].addr))
goto nla_put_failure;
/* We get the skb->data */
NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
goto nla_put_failure;
/* We get the flags for this transmission, and we translate them to
wmediumd flags */
@ -597,7 +599,8 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
goto nla_put_failure;
/* We get the tx control (rate and retries) info*/
@ -606,12 +609,14 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
tx_attempts[i].count = info->status.rates[i].count;
}
NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
tx_attempts);
if (nla_put(skb, HWSIM_ATTR_TX_INFO,
sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
tx_attempts))
goto nla_put_failure;
/* We create a cookie to identify this skb */
NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
goto nla_put_failure;
genlmsg_end(skb, msg_head);
genlmsg_unicast(&init_net, skb, dst_pid);
@ -1108,7 +1113,8 @@ static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
nla_total_size(sizeof(u32)));
if (!skb)
return -ENOMEM;
NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
goto nla_put_failure;
return cfg80211_testmode_reply(skb);
default:
return -EOPNOTSUPP;