networking: convert many more places to skb_put_zero()

There were many places that my previous spatch didn't find,
as pointed out by yuan linyu in various patches.

The following spatch found many more and also removes the
now unnecessary casts:

    @@
    identifier p, p2;
    expression len;
    expression skb;
    type t, t2;
    @@
    (
    -p = skb_put(skb, len);
    +p = skb_put_zero(skb, len);
    |
    -p = (t)skb_put(skb, len);
    +p = skb_put_zero(skb, len);
    )
    ... when != p
    (
    p2 = (t2)p;
    -memset(p2, 0, len);
    |
    -memset(p, 0, len);
    )

    @@
    type t, t2;
    identifier p, p2;
    expression skb;
    @@
    t *p;
    ...
    (
    -p = skb_put(skb, sizeof(t));
    +p = skb_put_zero(skb, sizeof(t));
    |
    -p = (t *)skb_put(skb, sizeof(t));
    +p = skb_put_zero(skb, sizeof(t));
    )
    ... when != p
    (
    p2 = (t2)p;
    -memset(p2, 0, sizeof(*p));
    |
    -memset(p, 0, sizeof(*p));
    )

    @@
    expression skb, len;
    @@
    -memset(skb_put(skb, len), 0, len);
    +skb_put_zero(skb, len);

Apply it to the tree (with one manual fixup to keep the
comment in vxlan.c, which spatch removed.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index de0f1cdb64d4..148c7276869c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1242,8 +1242,7 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 
         skb_reserve(skb, local->hw.extra_tx_headroom + IEEE80211_WEP_IV_LEN);
 
-        mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
-        memset(mgmt, 0, 24 + 6);
+        mgmt = skb_put_zero(skb, 24 + 6);
         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                           IEEE80211_STYPE_AUTH);
         memcpy(mgmt->da, da, ETH_ALEN);
@@ -2999,8 +2998,7 @@ int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
                 return -ENOMEM;
 
         skb_reserve(skb, local->tx_headroom);
-        mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
-        memset(mgmt, 0, hdr_len);
+        mgmt = skb_put_zero(skb, hdr_len);
         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                           IEEE80211_STYPE_ACTION);