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| author | Mitko Haralanov <mitko.haralanov@intel.com> | 2016-07-25 13:38:07 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-08-02 16:00:58 -0400 |
| commit | 5fd2b562edca6cfc710f97f0b691a589cf14c9e7 (patch) | |
| tree | 3b0a96ca59a5c75d7982af3246549c0d401e04f6 /drivers/infiniband/hw/hfi1/ud.c | |
| parent | 1b23f02cf4bbe644028077539b1045f742d61fa2 (diff) | |
| download | linux-stable-5fd2b562edca6cfc710f97f0b691a589cf14c9e7.tar.gz linux-stable-5fd2b562edca6cfc710f97f0b691a589cf14c9e7.tar.bz2 linux-stable-5fd2b562edca6cfc710f97f0b691a589cf14c9e7.zip | |
IB/hfi1: Pull FECN/BECN processing to a common place
There were multiple places where FECN/BECN processing was
being done for the different types of QPs. All of that code
was very similar, which meant that it could be pulled into
a single function used by the different QP types.
To retain the performance in the fastpath, the common code
starts with an inline function, which only calls the slow
path if the packet has any of the [FB]ECN bits set.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/ud.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/ud.c | 24 |
1 files changed, 1 insertions, 23 deletions
diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c index be91f6fa1c87..02488c6fab28 100644 --- a/drivers/infiniband/hw/hfi1/ud.c +++ b/drivers/infiniband/hw/hfi1/ud.c @@ -679,29 +679,10 @@ void hfi1_ud_rcv(struct hfi1_packet *packet) struct rvt_qp *qp = packet->qp; bool has_grh = rcv_flags & HFI1_HAS_GRH; u8 sc5 = hdr2sc((struct hfi1_message_header *)hdr, packet->rhf); - u32 bth1; - int is_mcast; - struct ib_grh *grh = NULL; qkey = be32_to_cpu(ohdr->u.ud.deth[0]); src_qp = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK; dlid = be16_to_cpu(hdr->lrh[1]); - is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) && - (dlid != be16_to_cpu(IB_LID_PERMISSIVE)); - bth1 = be32_to_cpu(ohdr->bth[1]); - if (unlikely(bth1 & HFI1_BECN_SMASK)) { - /* - * In pre-B0 h/w the CNP_OPCODE is handled via an - * error path. - */ - struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); - u32 lqpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK; - u8 sl; - - sl = ibp->sc_to_sl[sc5]; - - process_becn(ppd, sl, 0, lqpn, 0, IB_CC_SVCTYPE_UD); - } /* * The opcode is in the low byte when its in network order @@ -712,11 +693,8 @@ void hfi1_ud_rcv(struct hfi1_packet *packet) pkey = (u16)be32_to_cpu(ohdr->bth[0]); - if (!is_mcast && (opcode != IB_OPCODE_CNP) && bth1 & HFI1_FECN_SMASK) { - u16 slid = be16_to_cpu(hdr->lrh[3]); + process_ecn(qp, packet, (opcode != IB_OPCODE_CNP)); - return_cnp(ibp, qp, src_qp, pkey, dlid, slid, sc5, grh); - } /* * Get the number of bytes the message was padded by * and drop incomplete packets. |