From: Mike Marciniszyn mike.marciniszyn@intel.com
[ Upstream commit 5ffd048698ea5139743acd45e8ab388a683642b8 ]
All other code paths increment some form of drop counter.
This was missed in the original implementation.
Fixes: 82c2611daaf0 ("staging/rdma/hfi1: Handle packets with invalid RHF on context 0") Link: https://lore.kernel.org/r/20200106134228.119356.96828.stgit@awfm-01.aw.intel... Reviewed-by: Kaike Wan kaike.wan@intel.com Signed-off-by: Mike Marciniszyn mike.marciniszyn@intel.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@intel.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/hfi1/chip.c | 10 ++++++++++ drivers/infiniband/hw/hfi1/chip.h | 1 + drivers/infiniband/hw/hfi1/driver.c | 1 + drivers/infiniband/hw/hfi1/hfi.h | 2 ++ 4 files changed, 14 insertions(+)
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index 9b1fb84a3d45b..d5961918fe157 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -1685,6 +1685,14 @@ static u64 access_sw_pio_drain(const struct cntr_entry *entry, return dd->verbs_dev.n_piodrain; }
+static u64 access_sw_ctx0_seq_drop(const struct cntr_entry *entry, + void *context, int vl, int mode, u64 data) +{ + struct hfi1_devdata *dd = context; + + return dd->ctx0_seq_drop; +} + static u64 access_sw_vtx_wait(const struct cntr_entry *entry, void *context, int vl, int mode, u64 data) { @@ -4249,6 +4257,8 @@ static struct cntr_entry dev_cntrs[DEV_CNTR_LAST] = { access_sw_cpu_intr), [C_SW_CPU_RCV_LIM] = CNTR_ELEM("RcvLimit", 0, 0, CNTR_NORMAL, access_sw_cpu_rcv_limit), +[C_SW_CTX0_SEQ_DROP] = CNTR_ELEM("SeqDrop0", 0, 0, CNTR_NORMAL, + access_sw_ctx0_seq_drop), [C_SW_VTX_WAIT] = CNTR_ELEM("vTxWait", 0, 0, CNTR_NORMAL, access_sw_vtx_wait), [C_SW_PIO_WAIT] = CNTR_ELEM("PioWait", 0, 0, CNTR_NORMAL, diff --git a/drivers/infiniband/hw/hfi1/chip.h b/drivers/infiniband/hw/hfi1/chip.h index 4ca5ac8d7e9e4..bfccd4ae07a72 100644 --- a/drivers/infiniband/hw/hfi1/chip.h +++ b/drivers/infiniband/hw/hfi1/chip.h @@ -926,6 +926,7 @@ enum { C_DC_PG_STS_TX_MBE_CNT, C_SW_CPU_INTR, C_SW_CPU_RCV_LIM, + C_SW_CTX0_SEQ_DROP, C_SW_VTX_WAIT, C_SW_PIO_WAIT, C_SW_PIO_DRAIN, diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index 01aa1f132f55e..941b465244abe 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -734,6 +734,7 @@ static noinline int skip_rcv_packet(struct hfi1_packet *packet, int thread) { int ret;
+ packet->rcd->dd->ctx0_seq_drop++; /* Set up for the next packet */ packet->rhqoff += packet->rsize; if (packet->rhqoff >= packet->maxcnt) diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index fa45350a9a1d3..6590f56bb295f 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1153,6 +1153,8 @@ struct hfi1_devdata {
char *boardname; /* human readable board info */
+ u64 ctx0_seq_drop; + /* reset value */ u64 z_int_counter; u64 z_rcv_limit;