diff options
author | Chuck Lever <chuck.lever@oracle.com> | 2020-03-28 13:43:22 -0400 |
---|---|---|
committer | Chuck Lever <chuck.lever@oracle.com> | 2020-07-13 17:28:24 -0400 |
commit | 07e9a6325a35fb9655f7b52e2b9dc632da6eef51 (patch) | |
tree | 44c25f6c649d1f7a0f4034a64203b0a4a018098d /net/sunrpc/xprtrdma | |
parent | 0b8dc1b69995cbd81c2c9a2f1730c46cce085f62 (diff) |
SUNRPC: Add helpers for decoding list discriminators symbolically
Use these helpers in a few spots to demonstrate their use.
The remaining open-coded discriminator checks in rpcrdma will be
addressed in subsequent patches.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/xprtrdma')
-rw-r--r-- | net/sunrpc/xprtrdma/rpc_rdma.c | 12 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 17 |
2 files changed, 14 insertions, 15 deletions
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index 935bbef2f7be..feecd1f55f18 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -1133,11 +1133,11 @@ rpcrdma_is_bcall(struct rpcrdma_xprt *r_xprt, struct rpcrdma_rep *rep) p = xdr_inline_decode(xdr, 0); /* Chunk lists */ - if (*p++ != xdr_zero) + if (xdr_item_is_present(p++)) return false; - if (*p++ != xdr_zero) + if (xdr_item_is_present(p++)) return false; - if (*p++ != xdr_zero) + if (xdr_item_is_present(p++)) return false; /* RPC header */ @@ -1215,7 +1215,7 @@ static int decode_read_list(struct xdr_stream *xdr) p = xdr_inline_decode(xdr, sizeof(*p)); if (unlikely(!p)) return -EIO; - if (unlikely(*p != xdr_zero)) + if (unlikely(xdr_item_is_present(p))) return -EIO; return 0; } @@ -1234,7 +1234,7 @@ static int decode_write_list(struct xdr_stream *xdr, u32 *length) p = xdr_inline_decode(xdr, sizeof(*p)); if (unlikely(!p)) return -EIO; - if (*p == xdr_zero) + if (xdr_item_is_absent(p)) break; if (!first) return -EIO; @@ -1256,7 +1256,7 @@ static int decode_reply_chunk(struct xdr_stream *xdr, u32 *length) return -EIO; *length = 0; - if (*p != xdr_zero) + if (xdr_item_is_present(p)) if (decode_write_chunk(xdr, length)) return -EIO; return 0; diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c index c072ce61b393..5e78067889f3 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c +++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c @@ -419,7 +419,7 @@ static bool xdr_check_read_list(struct svc_rdma_recv_ctxt *rctxt) len = 0; first = true; - while (*p != xdr_zero) { + while (xdr_item_is_present(p)) { p = xdr_inline_decode(&rctxt->rc_stream, rpcrdma_readseg_maxsz * sizeof(*p)); if (!p) @@ -500,7 +500,7 @@ static bool xdr_check_write_list(struct svc_rdma_recv_ctxt *rctxt) if (!p) return false; rctxt->rc_write_list = p; - while (*p != xdr_zero) { + while (xdr_item_is_present(p)) { if (!xdr_check_write_chunk(rctxt, MAX_BYTES_WRITE_CHUNK)) return false; ++chcount; @@ -532,12 +532,11 @@ static bool xdr_check_reply_chunk(struct svc_rdma_recv_ctxt *rctxt) p = xdr_inline_decode(&rctxt->rc_stream, sizeof(*p)); if (!p) return false; - rctxt->rc_reply_chunk = p; - if (*p != xdr_zero) { + rctxt->rc_reply_chunk = NULL; + if (xdr_item_is_present(p)) { if (!xdr_check_write_chunk(rctxt, MAX_BYTES_SPECIAL_CHUNK)) return false; - } else { - rctxt->rc_reply_chunk = NULL; + rctxt->rc_reply_chunk = p; } return true; } @@ -568,7 +567,7 @@ static void svc_rdma_get_inv_rkey(struct svcxprt_rdma *rdma, p += rpcrdma_fixed_maxsz; /* Read list */ - while (*p++ != xdr_zero) { + while (xdr_item_is_present(p++)) { p++; /* position */ if (inv_rkey == xdr_zero) inv_rkey = *p; @@ -578,7 +577,7 @@ static void svc_rdma_get_inv_rkey(struct svcxprt_rdma *rdma, } /* Write list */ - while (*p++ != xdr_zero) { + while (xdr_item_is_present(p++)) { segcount = be32_to_cpup(p++); for (i = 0; i < segcount; i++) { if (inv_rkey == xdr_zero) @@ -590,7 +589,7 @@ static void svc_rdma_get_inv_rkey(struct svcxprt_rdma *rdma, } /* Reply chunk */ - if (*p++ != xdr_zero) { + if (xdr_item_is_present(p++)) { segcount = be32_to_cpup(p++); for (i = 0; i < segcount; i++) { if (inv_rkey == xdr_zero) |