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| author | Xin Long <lucien.xin@gmail.com> | 2017-11-26 20:16:07 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-28 11:00:13 -0500 |
| commit | af2697a0273f7665429c47d71ab26f2412af924e (patch) | |
| tree | e244d8c6605bd3b6599fd423b82a8d61da2b7547 | |
| parent | 08f46070dde2a835a7a5bfd4c70372c27bff5d88 (diff) | |
| download | linux-af2697a0273f7665429c47d71ab26f2412af924e.tar.bz2 | |
sctp: force the params with right types for sctp csum apis
Now sctp_csum_xxx doesn't really match the param types of these common
csum apis. As sctp_csum_xxx is defined in sctp/checksum.h, many sparse
errors occur when make C=2 not only with M=net/sctp but also with other
modules that include this header file.
This patch is to force them fit in csum apis with the right types.
Fixes: e6d8b64b34aa ("net: sctp: fix and consolidate SCTP checksumming code")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sctp/checksum.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/include/net/sctp/checksum.h b/include/net/sctp/checksum.h index 4a5b9a306c69..32ee65a30aff 100644 --- a/include/net/sctp/checksum.h +++ b/include/net/sctp/checksum.h @@ -48,31 +48,32 @@ static inline __wsum sctp_csum_update(const void *buff, int len, __wsum sum) /* This uses the crypto implementation of crc32c, which is either * implemented w/ hardware support or resolves to __crc32c_le(). */ - return crc32c(sum, buff, len); + return (__force __wsum)crc32c((__force __u32)sum, buff, len); } static inline __wsum sctp_csum_combine(__wsum csum, __wsum csum2, int offset, int len) { - return __crc32c_le_combine(csum, csum2, len); + return (__force __wsum)__crc32c_le_combine((__force __u32)csum, + (__force __u32)csum2, len); } static inline __le32 sctp_compute_cksum(const struct sk_buff *skb, unsigned int offset) { struct sctphdr *sh = sctp_hdr(skb); - __le32 ret, old = sh->checksum; const struct skb_checksum_ops ops = { .update = sctp_csum_update, .combine = sctp_csum_combine, }; + __le32 old = sh->checksum; + __wsum new; sh->checksum = 0; - ret = cpu_to_le32(~__skb_checksum(skb, offset, skb->len - offset, - ~(__u32)0, &ops)); + new = ~__skb_checksum(skb, offset, skb->len - offset, ~(__wsum)0, &ops); sh->checksum = old; - return ret; + return cpu_to_le32((__force __u32)new); } #endif /* __sctp_checksum_h__ */ |