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| author | Sven Eckelmann <sven@narfation.org> | 2019-12-13 21:24:27 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-12-17 01:09:44 +0100 |
| commit | 1f1c1d7c89ee538f3e36b43098e95973f8fa37db (patch) | |
| tree | 76eb473383add1ef0a0c92817fc29dd135c37c00 /include/net/dsfield.h | |
| parent | r8169: check that Realtek PHY driver module is loaded (diff) | |
| download | linux-1f1c1d7c89ee538f3e36b43098e95973f8fa37db.tar.xz linux-1f1c1d7c89ee538f3e36b43098e95973f8fa37db.zip | |
ipv6: Annotate bitwise IPv6 dsfield pointer cast
The sparse commit 6002ded74587 ("add a flag to warn on casts to/from
bitwise pointers") introduced a check for non-direct casts from/to
restricted datatypes (when -Wbitwise-pointer is enabled).
This triggered a warning in ipv6_get_dsfield() because sparse doesn't know
that the buffer already points to some data in the correct bitwise integer
format. This was already fixed in ipv6_change_dsfield() by the __force
attribute and can be fixed here the same way.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/dsfield.h')
| -rw-r--r-- | include/net/dsfield.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/dsfield.h b/include/net/dsfield.h index 1a245ee10c95..a59a57ffc546 100644 --- a/include/net/dsfield.h +++ b/include/net/dsfield.h @@ -21,7 +21,7 @@ static inline __u8 ipv4_get_dsfield(const struct iphdr *iph) static inline __u8 ipv6_get_dsfield(const struct ipv6hdr *ipv6h) { - return ntohs(*(const __be16 *)ipv6h) >> 4; + return ntohs(*(__force const __be16 *)ipv6h) >> 4; } |