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IB/hfi1: Add functions to parse 9B headers

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These inline functions improve code readability by
enabling callers to read specific fields from the
header without knowledge of byte offsets.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Don Hiatt
2017-04-09 10:16:22 -07:00
committed by Doug Ledford
parent aad559c21d
commit cb42705792
9 changed files with 102 additions and 47 deletions
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8
drivers/infiniband/hw/hfi1/uc.c
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@@ -320,7 +320,7 @@ void hfi1_uc_rcv(struct hfi1_packet *packet)
process_ecn(qp, packet, true);
psn = be32_to_cpu(ohdr->bth[2]);
opcode = (bth0 >> 24) & 0xff;
opcode = ib_bth_get_opcode(ohdr);
/* Compare the PSN verses the expected PSN. */
if (unlikely(cmp_psn(psn, qp->r_psn) != 0)) {
@@ -433,7 +433,7 @@ no_immediate_data:
wc.wc_flags = 0;
send_last:
/* Get the number of bytes the message was padded by. */
pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
pad = ib_bth_get_pad(ohdr);
/* Check for invalid length. */
/* LAST len should be >= 1 */
if (unlikely(tlen < (hdrsize + pad + 4)))
@@ -528,7 +528,7 @@ rdma_last_imm:
wc.wc_flags = IB_WC_WITH_IMM;
/* Get the number of bytes the message was padded by. */
pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
pad = ib_bth_get_pad(ohdr);
/* Check for invalid length. */
/* LAST len should be >= 1 */
if (unlikely(tlen < (hdrsize + pad + 4)))
@@ -555,7 +555,7 @@ rdma_last_imm:
case OP(RDMA_WRITE_LAST):
rdma_last:
/* Get the number of bytes the message was padded by. */
pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
pad = ib_bth_get_pad(ohdr);
/* Check for invalid length. */
/* LAST len should be >= 1 */
if (unlikely(tlen < (hdrsize + pad + 4)))