diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-09-28 08:59:57 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-09-28 11:16:21 -0700 |
| commit | 6022943eb4cb3cb9e43f27f1faeaba38e162d966 (patch) | |
| tree | 0c495a94448610e20a4872416b85c8ffdb0f2adf /drivers/infiniband/hw/ipath/ipath_verbs.h | |
| parent | fd6a79a786b84510d00ee6aa6449a468e6d75dee (diff) | |
IB/ipath: Limit # of packets sent without an ACK received
The sender requests an ACK every 1/2 MB to avoid retransmit timeouts that
were causing MVAPICH mod_bw to fail after a predictable number of sends.
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index 09bbb3f9a217..3fffaa02e669 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -370,6 +370,7 @@ struct ipath_qp { u8 s_rnr_retry_cnt; u8 s_retry; /* requester retry counter */ u8 s_rnr_retry; /* requester RNR retry counter */ + u8 s_wait_credit; /* limit number of unacked packets sent */ u8 s_pkey_index; /* PKEY index to use */ u8 timeout; /* Timeout for this QP */ enum ib_mtu path_mtu; @@ -393,6 +394,8 @@ struct ipath_qp { #define IPATH_S_BUSY 0 #define IPATH_S_SIGNAL_REQ_WR 1 +#define IPATH_PSN_CREDIT 2048 + /* * Since struct ipath_swqe is not a fixed size, we can't simply index into * struct ipath_qp.s_wq. This function does the array index computation. @@ -521,6 +524,7 @@ struct ipath_ibdev { u32 n_rnr_naks; u32 n_other_naks; u32 n_timeouts; + u32 n_rc_stalls; u32 n_pkt_drops; u32 n_vl15_dropped; u32 n_wqe_errs; |