From 4458f04c02a46c679a90ef71f866a415c192deb4 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Fri, 13 Feb 2009 08:33:42 +0000 Subject: sctp: Clean up sctp checksumming code The sctp crc32c checksum is always generated in little endian. So, we clean up the code to treat it as little endian and remove all the __force casts. Suggested by Herbert Xu. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/output.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'net/sctp/output.c') diff --git a/net/sctp/output.c b/net/sctp/output.c index 2d65b7a7330..07d58903a74 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -367,7 +367,6 @@ int sctp_packet_transmit(struct sctp_packet *packet) struct sctp_transport *tp = packet->transport; struct sctp_association *asoc = tp->asoc; struct sctphdr *sh; - __be32 crc32 = cpu_to_be32(0); struct sk_buff *nskb; struct sctp_chunk *chunk, *tmp; struct sock *sk; @@ -532,16 +531,15 @@ int sctp_packet_transmit(struct sctp_packet *packet) * by CRC32-C as described in . */ if (!sctp_checksum_disable && !(dst->dev->features & NETIF_F_NO_CSUM)) { - crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len); - crc32 = sctp_end_cksum(crc32); + __u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len); + + /* 3) Put the resultant value into the checksum field in the + * common header, and leave the rest of the bits unchanged. + */ + sh->checksum = sctp_end_cksum(crc32); } else nskb->ip_summed = CHECKSUM_UNNECESSARY; - /* 3) Put the resultant value into the checksum field in the - * common header, and leave the rest of the bits unchanged. - */ - sh->checksum = crc32; - /* IP layer ECN support * From RFC 2481 * "The ECN-Capable Transport (ECT) bit would be set by the -- cgit v1.2.3