6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luoyouming luoyouming@huawei.com
[ Upstream commit 5e617c18b1f34ec57ad5dce44f09de603cf6bd6c ]
SL set by users may exceed the capability of devices. So add check for this situation.
Fixes: fba429fcf9a5 ("RDMA/hns: Fix missing fields in address vector") Fixes: 70f92521584f ("RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT") Fixes: f0cb411aad23 ("RDMA/hns: Use new interface to modify QP context") Signed-off-by: Luoyouming luoyouming@huawei.com Signed-off-by: Junxian Huang huangjunxian6@hisilicon.com Link: https://lore.kernel.org/r/20231017125239.164455-5-huangjunxian6@hisilicon.co... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/hns/hns_roce_ah.c | 13 +++++++++++- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 23 ++++++++++++---------- 2 files changed, 25 insertions(+), 11 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c index e77fcc74f15c4..3df032ddda189 100644 --- a/drivers/infiniband/hw/hns/hns_roce_ah.c +++ b/drivers/infiniband/hw/hns/hns_roce_ah.c @@ -33,7 +33,9 @@ #include <linux/pci.h> #include <rdma/ib_addr.h> #include <rdma/ib_cache.h> +#include "hnae3.h" #include "hns_roce_device.h" +#include "hns_roce_hw_v2.h"
static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr) { @@ -57,6 +59,7 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device); struct hns_roce_ah *ah = to_hr_ah(ibah); int ret = 0; + u32 max_sl;
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata) return -EOPNOTSUPP; @@ -70,9 +73,17 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, ah->av.hop_limit = grh->hop_limit; ah->av.flowlabel = grh->flow_label; ah->av.udp_sport = get_ah_udp_sport(ah_attr); - ah->av.sl = rdma_ah_get_sl(ah_attr); ah->av.tclass = get_tclass(grh);
+ ah->av.sl = rdma_ah_get_sl(ah_attr); + max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1); + if (unlikely(ah->av.sl > max_sl)) { + ibdev_err_ratelimited(&hr_dev->ib_dev, + "failed to set sl, sl (%u) shouldn't be larger than %u.\n", + ah->av.sl, max_sl); + return -EINVAL; + } + memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE); memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 3daa684f88362..b7faf5c8f6ba8 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -4821,22 +4821,32 @@ static int hns_roce_v2_set_path(struct ib_qp *ibqp, struct hns_roce_qp *hr_qp = to_hr_qp(ibqp); struct ib_device *ibdev = &hr_dev->ib_dev; const struct ib_gid_attr *gid_attr = NULL; + u8 sl = rdma_ah_get_sl(&attr->ah_attr); int is_roce_protocol; u16 vlan_id = 0xffff; bool is_udp = false; + u32 max_sl; u8 ib_port; u8 hr_port; int ret;
+ max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1); + if (unlikely(sl > max_sl)) { + ibdev_err_ratelimited(ibdev, + "failed to fill QPC, sl (%u) shouldn't be larger than %u.\n", + sl, max_sl); + return -EINVAL; + } + /* * If free_mr_en of qp is set, it means that this qp comes from * free mr. This qp will perform the loopback operation. * In the loopback scenario, only sl needs to be set. */ if (hr_qp->free_mr_en) { - hr_reg_write(context, QPC_SL, rdma_ah_get_sl(&attr->ah_attr)); + hr_reg_write(context, QPC_SL, sl); hr_reg_clear(qpc_mask, QPC_SL); - hr_qp->sl = rdma_ah_get_sl(&attr->ah_attr); + hr_qp->sl = sl; return 0; }
@@ -4903,14 +4913,7 @@ static int hns_roce_v2_set_path(struct ib_qp *ibqp, memcpy(context->dgid, grh->dgid.raw, sizeof(grh->dgid.raw)); memset(qpc_mask->dgid, 0, sizeof(grh->dgid.raw));
- hr_qp->sl = rdma_ah_get_sl(&attr->ah_attr); - if (unlikely(hr_qp->sl > MAX_SERVICE_LEVEL)) { - ibdev_err(ibdev, - "failed to fill QPC, sl (%u) shouldn't be larger than %d.\n", - hr_qp->sl, MAX_SERVICE_LEVEL); - return -EINVAL; - } - + hr_qp->sl = sl; hr_reg_write(context, QPC_SL, hr_qp->sl); hr_reg_clear(qpc_mask, QPC_SL);