[PATCH net 0/2] qed: Fix RoCE infrastructure

[PATCH net 0/2] qed: Fix RoCE infrastructure

[Yuval Mintz]

This series fixes 2 basic issues with RoCE support,
one handles a missing configuration in the initial infrastructure
support while the other is a regression introduced by one of the
initial fix submissions.

Dave,

I've built this series against 'net'  [specifically on top of
cdb26d3387f0 ("net: bgmac: fix reversed checks for clock control flag")],
but I'm not entirely convinced whether that's the right place for them -
On one-hand, they're RoCE-specific fixes, but they're also infrastructure
fixes that are wholly contained inside qed.
Would like to hear your [and Doug's] preference on whether we should
target such patches to net or linux-rdma.

Thanks,
Yuval

Ram Amrani (2):
  qed: configure ll2 RoCE v1/v2 flavor correctly
  qed: correct rdma params configuration

 drivers/net/ethernet/qlogic/qed/qed_hsi.h  |  3 ---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c  |  1 +
 drivers/net/ethernet/qlogic/qed/qed_main.c | 17 ++++++++---------
 3 files changed, 9 insertions(+), 12 deletions(-)

-- 
1.9.3

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[PATCH net 1/2] qed: configure ll2 RoCE v1/v2 flavor correctly

[Yuval Mintz]

From: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>

Currently RoCE v2 won't operate with RDMA CM due to missing setting of
the roce-flavour in the ll2 configuration.
This patch properly sets the flavour, and deletes incorrect HSI
that doesn't [yet] exist.

Fixes: abd49676c707 ("qed: Add RoCE ll2 & GSI support")
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/net/ethernet/qlogic/qed/qed_hsi.h | 3 ---
 drivers/net/ethernet/qlogic/qed/qed_ll2.c | 1 +
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_hsi.h b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
index 72eee29..2777d5b 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
@@ -727,9 +727,6 @@ struct core_tx_bd_flags {
 #define CORE_TX_BD_FLAGS_L4_PROTOCOL_SHIFT	6
 #define CORE_TX_BD_FLAGS_L4_PSEUDO_CSUM_MODE_MASK	0x1
 #define CORE_TX_BD_FLAGS_L4_PSEUDO_CSUM_MODE_SHIFT 7
-#define CORE_TX_BD_FLAGS_ROCE_FLAV_MASK		0x1
-#define CORE_TX_BD_FLAGS_ROCE_FLAV_SHIFT	12
-
 };
 
 struct core_tx_bd {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 63e1a1b..f95385c 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -1119,6 +1119,7 @@ static void qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
 	start_bd->bd_flags.as_bitfield |= CORE_TX_BD_FLAGS_START_BD_MASK <<
 	    CORE_TX_BD_FLAGS_START_BD_SHIFT;
 	SET_FIELD(start_bd->bitfield0, CORE_TX_BD_NBDS, num_of_bds);
+	SET_FIELD(start_bd->bitfield0, CORE_TX_BD_ROCE_FLAV, type);
 	DMA_REGPAIR_LE(start_bd->addr, first_frag);
 	start_bd->nbytes = cpu_to_le16(first_frag_len);
 
-- 
1.9.3

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[PATCH net 2/2] qed: Correct rdma params configuration

[Yuval Mintz]

From: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>

Previous fix has broken RoCE support as the rdma_pf_params are now
being set into the parameters only after the params are alrady assigned
into the hw-function.

Fixes: 0189efb8f4f8 ("qed*: Fix Kconfig dependencies with INFINIBAND_QEDR")
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/net/ethernet/qlogic/qed/qed_main.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index c418360..333c744 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -839,20 +839,19 @@ static void qed_update_pf_params(struct qed_dev *cdev,
 {
 	int i;
 
+	if (IS_ENABLED(CONFIG_QED_RDMA)) {
+		params->rdma_pf_params.num_qps = QED_ROCE_QPS;
+		params->rdma_pf_params.min_dpis = QED_ROCE_DPIS;
+		/* divide by 3 the MRs to avoid MF ILT overflow */
+		params->rdma_pf_params.num_mrs = RDMA_MAX_TIDS;
+		params->rdma_pf_params.gl_pi = QED_ROCE_PROTOCOL_INDEX;
+	}
+
 	for (i = 0; i < cdev->num_hwfns; i++) {
 		struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
 
 		p_hwfn->pf_params = *params;
 	}
-
-	if (!IS_ENABLED(CONFIG_QED_RDMA))
-		return;
-
-	params->rdma_pf_params.num_qps = QED_ROCE_QPS;
-	params->rdma_pf_params.min_dpis = QED_ROCE_DPIS;
-	/* divide by 3 the MRs to avoid MF ILT overflow */
-	params->rdma_pf_params.num_mrs = RDMA_MAX_TIDS;
-	params->rdma_pf_params.gl_pi = QED_ROCE_PROTOCOL_INDEX;
 }
 
 static int qed_slowpath_start(struct qed_dev *cdev,
-- 
1.9.3

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Re: [PATCH net 0/2] qed: Fix RoCE infrastructure

[David Miller]

From: Yuval Mintz <Yuval.Mintz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Date: Wed, 9 Nov 2016 22:48:42 +0200

> This series fixes 2 basic issues with RoCE support,
> one handles a missing configuration in the initial infrastructure
> support while the other is a regression introduced by one of the
> initial fix submissions.

Series applied, thanks.
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