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authoryuan linyu <Linyu.Yuan@alcatel-sbell.com.cn>2017-06-18 17:48:17 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-20 20:30:14 +0300
commitde77b966ce8adcb4c58d50e2f087320d5479812a (patch)
treeb18e9a0dc3694a7d7165ec8631801d6ba47de15f /net/802
parentddcbabf4404606fcc3edf6e48caa9707b33d3df4 (diff)
downloadlinux-de77b966ce8adcb4c58d50e2f087320d5479812a.tar.xz
net: introduce __skb_put_[zero, data, u8]
follow Johannes Berg, semantic patch file as below, @@ 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); ) @@ identifier p; expression len; expression skb; type t; @@ ( -t p = __skb_put(skb, len); +t p = __skb_put_zero(skb, len); ) ... when != p ( -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); @@ expression skb, len, data; @@ -memcpy(__skb_put(skb, len), data, len); +__skb_put_data(skb, data, len); @@ expression SKB, C, S; typedef u8; identifier fn = {__skb_put}; fresh identifier fn2 = fn ## "_u8"; @@ - *(u8 *)fn(SKB, S) = C; + fn2(SKB, C); Signed-off-by: yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/802')
-rw-r--r--net/802/garp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/802/garp.c b/net/802/garp.c
index a9a266569293..2dac647ff420 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -232,7 +232,7 @@ static int garp_pdu_append_end_mark(struct garp_applicant *app)
{
if (skb_tailroom(app->pdu) < sizeof(u8))
return -1;
- *(u8 *)__skb_put(app->pdu, sizeof(u8)) = GARP_END_MARK;
+ __skb_put_u8(app->pdu, GARP_END_MARK);
return 0;
}