[PATCH for-next 9/9] IB/hfi1,qib: Do not send QKey trap for UD qps

Dennis Dalessandro
2017-05-30T00:22:01Z

According to IBTA spec a QKey violation should not result in a bad qkey
trap being triggered for UD queue pairs. Also since it is a silent error
we do not increment the q_key violation or the dropped packet counters.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
drivers/infiniband/hw/hfi1/mad.c | 14 ++++-------
drivers/infiniband/hw/hfi1/ruc.c | 8 +++---
drivers/infiniband/hw/hfi1/ud.c | 37 +++++++++-------------------
drivers/infiniband/hw/hfi1/verbs.h | 4 ++-
drivers/infiniband/hw/qib/qib_mad.c | 13 ++++------
drivers/infiniband/hw/qib/qib_ruc.c | 20 ++++++++-------
drivers/infiniband/hw/qib/qib_ud.c | 43 +++++++++++----------------------
drivers/infiniband/hw/qib/qib_verbs.h | 4 ++-
8 files changed, 54 insertions(+), 89 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c
index c8daf63..a081a98 100644
--- a/drivers/infiniband/hw/hfi1/mad.c
+++ b/drivers/infiniband/hw/hfi1/mad.c
@@ -180,10 +180,10 @@ static void send_trap(struct hfi1_ibport *ibp, void *data, unsigned len)
}

/*
- * Send a bad [PQ]_Key trap (ch. 14.3.8).
+ * Send a bad P_Key trap (ch. 14.3.8).
*/
-void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
- u32 qp1, u32 qp2, u16 lid1, u16 lid2)
+void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
+ u32 qp1, u32 qp2, u16 lid1, u16 lid2)
{
struct opa_mad_notice_attr data;
u32 lid = ppd_from_ibp(ibp)->lid;
@@ -191,17 +191,13 @@ void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
u32 _lid2 = lid2;

memset(&data, 0, sizeof(data));
-
- if (trap_num == OPA_TRAP_BAD_P_KEY)
- ibp->rvp.pkey_violations++;
- else
- ibp->rvp.qkey_violations++;
ibp->rvp.n_pkt_drops++;
+ ibp->rvp.pkey_violations++;

/* Send violation trap */
data.generic_type = IB_NOTICE_TYPE_SECURITY;
data.prod_type_lsb = IB_NOTICE_PROD_CA;
- data.trap_num = trap_num;
+ data.trap_num = OPA_TRAP_BAD_P_KEY;
data.issuer_lid = cpu_to_be32(lid);
data.ntc_257_258.lid1 = cpu_to_be32(_lid1);
data.ntc_257_258.lid2 = cpu_to_be32(_lid2);
diff --git a/drivers/infiniband/hw/hfi1/ruc.c b/drivers/infiniband/hw/hfi1/ruc.c
index 476fe5d..9cf506a 100644
--- a/drivers/infiniband/hw/hfi1/ruc.c
+++ b/drivers/infiniband/hw/hfi1/ruc.c
@@ -254,8 +254,8 @@ int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet)
}
if (unlikely(rcv_pkey_check(ppd_from_ibp(ibp), (u16)bth0,
sc5, slid))) {
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY, (u16)bth0, sl,
- 0, qp->ibqp.qp_num, slid, dlid);
+ hfi1_bad_pkey(ibp, (u16)bth0, sl,
+ 0, qp->ibqp.qp_num, slid, dlid);
return 1;
}
/* Validate the SLID. See Ch. 9.6.1.5 and 17.2.8 */
@@ -290,8 +290,8 @@ int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet)
}
if (unlikely(rcv_pkey_check(ppd_from_ibp(ibp), (u16)bth0,
sc5, slid))) {
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY, (u16)bth0, sl,
- 0, qp->ibqp.qp_num, slid, dlid);
+ hfi1_bad_pkey(ibp, (u16)bth0, sl,
+ 0, qp->ibqp.qp_num, slid, dlid);
return 1;
}
/* Validate the SLID. See Ch. 9.6.1.5 */
diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c
index c995aa5..6bf7a1b 100644
--- a/drivers/infiniband/hw/hfi1/ud.c
+++ b/drivers/infiniband/hw/hfi1/ud.c
@@ -110,10 +110,10 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
((1 << ppd->lmc) - 1));
if (unlikely(ingress_pkey_check(ppd, pkey, sc5,
qp->s_pkey_index, slid))) {
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY, pkey,
- rdma_ah_get_sl(ah_attr),
- sqp->ibqp.qp_num, qp->ibqp.qp_num,
- slid, rdma_ah_get_dlid(ah_attr));
+ hfi1_bad_pkey(ibp, pkey,
+ rdma_ah_get_sl(ah_attr),
+ sqp->ibqp.qp_num, qp->ibqp.qp_num,
+ slid, rdma_ah_get_dlid(ah_attr));
goto drop;
}
}
@@ -128,18 +128,8 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)

qkey = (int)swqe->ud_wr.remote_qkey < 0 ?
sqp->qkey : swqe->ud_wr.remote_qkey;
- if (unlikely(qkey != qp->qkey)) {
- u16 lid;
-
- lid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
- ((1 << ppd->lmc) - 1));
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey,
- rdma_ah_get_sl(ah_attr),
- sqp->ibqp.qp_num, qp->ibqp.qp_num,
- lid,
- rdma_ah_get_dlid(ah_attr));
- goto drop;
- }
+ if (unlikely(qkey != qp->qkey))
+ goto drop; /* silently drop per IBTA spec */
}

/*
@@ -722,10 +712,10 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
* for invalid pkeys is optional according to
* IB spec (release 1.3, section 10.9.4)
*/
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY,
- pkey, sl,
- src_qp, qp->ibqp.qp_num,
- slid, dlid);
+ hfi1_bad_pkey(ibp,
+ pkey, sl,
+ src_qp, qp->ibqp.qp_num,
+ slid, dlid);
return;
}
} else {
@@ -734,12 +724,9 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
if (mgmt_pkey_idx < 0)
goto drop;
}
- if (unlikely(qkey != qp->qkey)) {
- hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey, sl,
- src_qp, qp->ibqp.qp_num,
- slid, dlid);
+ if (unlikely(qkey != qp->qkey)) /* Silent drop */
return;
- }
+
/* Drop invalid MAD packets (see 13.5.3.1). */
if (unlikely(qp->ibqp.qp_num == 1 &&
(tlen > 2048 || (sc5 == 0xF))))
diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index 17b38cd..fdf1e1f 100644
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -236,8 +236,8 @@ static inline int hfi1_send_ok(struct rvt_qp *qp)
/*
* This must be called with s_lock held.
*/
-void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
- u32 qp1, u32 qp2, u16 lid1, u16 lid2);
+void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
+ u32 qp1, u32 qp2, u16 lid1, u16 lid2);
void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index da295e0..a4a7f2a 100644
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -134,24 +134,21 @@ static void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len)
}

/*
- * Send a bad [PQ]_Key trap (ch. 14.3.8).
+ * Send a bad P_Key trap (ch. 14.3.8).
*/
-void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
- u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
+void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
+ u32 qp1, u32 qp2, __be16 lid1, __be16 lid2)
{
struct ib_mad_notice_attr data;

- if (trap_num == IB_NOTICE_TRAP_BAD_PKEY)
- ibp->rvp.pkey_violations++;
- else
- ibp->rvp.qkey_violations++;
ibp->rvp.n_pkt_drops++;
+ ibp->rvp.pkey_violations++;

/* Send violation trap */
data.generic_type = IB_NOTICE_TYPE_SECURITY;
data.prod_type_msb = 0;
data.prod_type_lsb = IB_NOTICE_PROD_CA;
- data.trap_num = trap_num;
+ data.trap_num = IB_NOTICE_TRAP_BAD_PKEY;
data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid);
data.toggle_count = 0;
memset(&data.details, 0, sizeof(data.details));
diff --git a/drivers/infiniband/hw/qib/qib_ruc.c b/drivers/infiniband/hw/qib/qib_ruc.c
index 88d84cb..2852845 100644
--- a/drivers/infiniband/hw/qib/qib_ruc.c
+++ b/drivers/infiniband/hw/qib/qib_ruc.c
@@ -256,11 +256,11 @@ int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
}
if (!qib_pkey_ok((u16)bth0,
qib_get_pkey(ibp, qp->s_alt_pkey_index))) {
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_PKEY,
- (u16)bth0,
- (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
- 0, qp->ibqp.qp_num,
- hdr->lrh[3], hdr->lrh[1]);
+ qib_bad_pkey(ibp,
+ (u16)bth0,
+ (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
+ 0, qp->ibqp.qp_num,
+ hdr->lrh[3], hdr->lrh[1]);
goto err;
}
/* Validate the SLID. See Ch. 9.6.1.5 and 17.2.8 */
@@ -295,11 +295,11 @@ int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
}
if (!qib_pkey_ok((u16)bth0,
qib_get_pkey(ibp, qp->s_pkey_index))) {
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_PKEY,
- (u16)bth0,
- (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
- 0, qp->ibqp.qp_num,
- hdr->lrh[3], hdr->lrh[1]);
+ qib_bad_pkey(ibp,
+ (u16)bth0,
+ (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
+ 0, qp->ibqp.qp_num,
+ hdr->lrh[3], hdr->lrh[1]);
goto err;
}
/* Validate the SLID. See Ch. 9.6.1.5 */
diff --git a/drivers/infiniband/hw/qib/qib_ud.c b/drivers/infiniband/hw/qib/qib_ud.c
index 341a123..be49074 100644
--- a/drivers/infiniband/hw/qib/qib_ud.c
+++ b/drivers/infiniband/hw/qib/qib_ud.c
@@ -66,8 +66,7 @@ static void qib_ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
qp = rvt_lookup_qpn(rdi, &ibp->rvp, swqe->ud_wr.remote_qpn);
if (!qp) {
ibp->rvp.n_pkt_drops++;
- rcu_read_unlock();
- return;
+ goto drop;
}

sqptype = sqp->ibqp.qp_type == IB_QPT_GSI ?
@@ -94,11 +93,11 @@ static void qib_ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
if (unlikely(!qib_pkey_ok(pkey1, pkey2))) {
lid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
((1 << ppd->lmc) - 1));
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_PKEY, pkey1,
- rdma_ah_get_sl(ah_attr),
- sqp->ibqp.qp_num, qp->ibqp.qp_num,
- cpu_to_be16(lid),
- cpu_to_be16(rdma_ah_get_dlid(ah_attr)));
+ qib_bad_pkey(ibp, pkey1,
+ rdma_ah_get_sl(ah_attr),
+ sqp->ibqp.qp_num, qp->ibqp.qp_num,
+ cpu_to_be16(lid),
+ cpu_to_be16(rdma_ah_get_dlid(ah_attr)));
goto drop;
}
}
@@ -113,18 +112,8 @@ static void qib_ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)

qkey = (int)swqe->ud_wr.remote_qkey < 0 ?
sqp->qkey : swqe->ud_wr.remote_qkey;
- if (unlikely(qkey != qp->qkey)) {
- u16 lid;
-
- lid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
- ((1 << ppd->lmc) - 1));
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_QKEY, qkey,
- rdma_ah_get_sl(ah_attr),
- sqp->ibqp.qp_num, qp->ibqp.qp_num,
- cpu_to_be16(lid),
- cpu_to_be16(rdma_ah_get_dlid(ah_attr)));
+ if (unlikely(qkey != qp->qkey))
goto drop;
- }
}

/*
@@ -487,22 +476,18 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
pkey1 = be32_to_cpu(ohdr->bth[0]);
pkey2 = qib_get_pkey(ibp, qp->s_pkey_index);
if (unlikely(!qib_pkey_ok(pkey1, pkey2))) {
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_PKEY,
- pkey1,
- (be16_to_cpu(hdr->lrh[0]) >> 4) &
+ qib_bad_pkey(ibp,
+ pkey1,
+ (be16_to_cpu(hdr->lrh[0]) >> 4) &
0xF,
- src_qp, qp->ibqp.qp_num,
- hdr->lrh[3], hdr->lrh[1]);
+ src_qp, qp->ibqp.qp_num,
+ hdr->lrh[3], hdr->lrh[1]);
return;
}
}
- if (unlikely(qkey != qp->qkey)) {
- qib_bad_pqkey(ibp, IB_NOTICE_TRAP_BAD_QKEY, qkey,
- (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
- src_qp, qp->ibqp.qp_num,
- hdr->lrh[3], hdr->lrh[1]);
+ if (unlikely(qkey != qp->qkey))
return;
- }
+
/* Drop invalid MAD packets (see 13.5.3.1). */
if (unlikely(qp->ibqp.qp_num == 1 &&
(tlen != 256 ||
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index da0db54..33d5691 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -241,8 +241,8 @@ static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
}

-void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
- u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
+void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
+ u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
void qib_sys_guid_chg(struct qib_ibport *ibp);
void qib_node_desc_chg(struct qib_ibport *ibp);