From 094bb20b9fcab3a1652a77741caba6b78097d622 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 11 Aug 2005 16:25:20 -0400 Subject: [PATCH] RPC: extract socket logic common to both client and server Clean-up: Move some code that is common to both RPC client- and server-side socket transports into its own source file, net/sunrpc/socklib.c. Test-plan: Compile kernel with CONFIG_NFS enabled. Millions of fsx operations over UDP, client and server. Connectathon over UDP. Version: Thu, 11 Aug 2005 16:03:09 -0400 Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- net/sunrpc/xprt.c | 64 ------------------------------------------------------- 1 file changed, 64 deletions(-) (limited to 'net/sunrpc/xprt.c') diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 0e4ffdaa0129..67444f494fea 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -691,70 +691,6 @@ xprt_complete_rqst(struct rpc_xprt *xprt, struct rpc_rqst *req, int copied) return; } -static size_t -skb_read_bits(skb_reader_t *desc, void *to, size_t len) -{ - if (len > desc->count) - len = desc->count; - if (skb_copy_bits(desc->skb, desc->offset, to, len)) - return 0; - desc->count -= len; - desc->offset += len; - return len; -} - -static size_t -skb_read_and_csum_bits(skb_reader_t *desc, void *to, size_t len) -{ - unsigned int csum2, pos; - - if (len > desc->count) - len = desc->count; - pos = desc->offset; - csum2 = skb_copy_and_csum_bits(desc->skb, pos, to, len, 0); - desc->csum = csum_block_add(desc->csum, csum2, pos); - desc->count -= len; - desc->offset += len; - return len; -} - -/* - * We have set things up such that we perform the checksum of the UDP - * packet in parallel with the copies into the RPC client iovec. -DaveM - */ -int -csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb) -{ - skb_reader_t desc; - - desc.skb = skb; - desc.offset = sizeof(struct udphdr); - desc.count = skb->len - desc.offset; - - if (skb->ip_summed == CHECKSUM_UNNECESSARY) - goto no_checksum; - - desc.csum = csum_partial(skb->data, desc.offset, skb->csum); - if (xdr_partial_copy_from_skb(xdr, 0, &desc, skb_read_and_csum_bits) < 0) - return -1; - if (desc.offset != skb->len) { - unsigned int csum2; - csum2 = skb_checksum(skb, desc.offset, skb->len - desc.offset, 0); - desc.csum = csum_block_add(desc.csum, csum2, desc.offset); - } - if (desc.count) - return -1; - if ((unsigned short)csum_fold(desc.csum)) - return -1; - return 0; -no_checksum: - if (xdr_partial_copy_from_skb(xdr, 0, &desc, skb_read_bits) < 0) - return -1; - if (desc.count) - return -1; - return 0; -} - /* * Input handler for RPC replies. Called from a bottom half and hence * atomic. -- cgit v1.2.1