diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2014-04-24 23:31:59 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-04-29 04:29:41 +0400 |
| commit | 92e5011ab0e073ab8fbb726c11529021e5e63973 (patch) | |
| tree | 61fb0f01aacc74a5445b35092edc6047481224bf /drivers/infiniband/hw/cxgb4/cm.c | |
| parent | cc18b939e1efbc2a47f62dbd2b1df53d974df6b7 (diff) | |
| download | linux-92e5011ab0e073ab8fbb726c11529021e5e63973.tar.xz | |
RDMA/cxgb4: Force T5 connections to use TAHOE congestion control
This is required to work around a T5 HW issue.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cm.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index f9b04bc7e602..1f863a96a480 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -587,6 +587,10 @@ static int send_connect(struct c4iw_ep *ep) opt2 |= SACK_EN(1); if (wscale && enable_tcp_window_scaling) opt2 |= WND_SCALE_EN(1); + if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { + opt2 |= T5_OPT_2_VALID; + opt2 |= V_CONG_CNTRL(CONG_ALG_TAHOE); + } t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { @@ -2018,6 +2022,10 @@ static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, if (tcph->ece && tcph->cwr) opt2 |= CCTRL_ECN(1); } + if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { + opt2 |= T5_OPT_2_VALID; + opt2 |= V_CONG_CNTRL(CONG_ALG_TAHOE); + } rpl = cplhdr(skb); INIT_TP_WR(rpl, ep->hwtid); |