diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2020-03-02 15:01:08 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-03-16 12:04:32 -0400 |
| commit | e604aad2cac7357162f661e45f2f60e46faa7b17 (patch) | |
| tree | 7f82e1ff6aac9128602ef6813bc4ce71792f7917 /include | |
| parent | 2426ddfdf169a4390e498b79b6d34d0d69c515bc (diff) | |
svcrdma: Use struct xdr_stream to decode ingress transport headers
The logic that checks incoming network headers has to be scrupulous.
De-duplicate: replace open-coded buffer overflow checks with the use
of xdr_stream helpers that are used most everywhere else XDR
decoding is done.
One minor change to the sanity checks: instead of checking the
length of individual segments, cap the length of the whole chunk
to be sure it can fit in the set of pages available in rq_pages.
This should be a better test of whether the server can handle the
chunks in each request.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sunrpc/rpc_rdma.h | 3 | ||||
| -rw-r--r-- | include/linux/sunrpc/svc_rdma.h | 1 | ||||
| -rw-r--r-- | include/trace/events/rpcrdma.h | 7 |
3 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h index 92d182fd8e3b..320c672d84de 100644 --- a/include/linux/sunrpc/rpc_rdma.h +++ b/include/linux/sunrpc/rpc_rdma.h @@ -58,7 +58,8 @@ enum { enum { rpcrdma_fixed_maxsz = 4, rpcrdma_segment_maxsz = 4, - rpcrdma_readchunk_maxsz = 2 + rpcrdma_segment_maxsz, + rpcrdma_readseg_maxsz = 1 + rpcrdma_segment_maxsz, + rpcrdma_readchunk_maxsz = 1 + rpcrdma_readseg_maxsz, }; /* diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h index 04e4a34d1c6a..c790dbb0dd90 100644 --- a/include/linux/sunrpc/svc_rdma.h +++ b/include/linux/sunrpc/svc_rdma.h @@ -132,6 +132,7 @@ struct svc_rdma_recv_ctxt { struct ib_sge rc_recv_sge; void *rc_recv_buf; struct xdr_buf rc_arg; + struct xdr_stream rc_stream; bool rc_temp; u32 rc_byte_len; unsigned int rc_page_count; diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index 545fe936a0cc..814b73bd2cc7 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -1469,7 +1469,7 @@ DECLARE_EVENT_CLASS(svcrdma_segment_event, ); #define DEFINE_SEGMENT_EVENT(name) \ - DEFINE_EVENT(svcrdma_segment_event, svcrdma_encode_##name,\ + DEFINE_EVENT(svcrdma_segment_event, svcrdma_##name,\ TP_PROTO( \ u32 handle, \ u32 length, \ @@ -1477,8 +1477,9 @@ DECLARE_EVENT_CLASS(svcrdma_segment_event, ), \ TP_ARGS(handle, length, offset)) -DEFINE_SEGMENT_EVENT(rseg); -DEFINE_SEGMENT_EVENT(wseg); +DEFINE_SEGMENT_EVENT(decode_wseg); +DEFINE_SEGMENT_EVENT(encode_rseg); +DEFINE_SEGMENT_EVENT(encode_wseg); DECLARE_EVENT_CLASS(svcrdma_chunk_event, TP_PROTO( |