Improve code readability using static helpers for each memory region
type. Re-use the common logic to get smaller functions that are easy
to maintain and reduce code duplication.
Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Signed-off-by: Israel Rukshin <israelr@xxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/mr.c | 290 ++++++++++++++++++++++------------------
1 file changed, 157 insertions(+), 133 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 9025b477d065..c6d8c2eed508 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1651,15 +1651,63 @@ int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
return 0;
}
+static void mlx5_set_umr_free_mkey(struct ib_pd *pd, u32 *in, int ndescs,
+ int access_mode, int page_shift)
+{
+ void *mkc;
+
+ mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
+
+ MLX5_SET(mkc, mkc, free, 1);
+ MLX5_SET(mkc, mkc, qpn, 0xffffff);
+ MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
+ MLX5_SET(mkc, mkc, translations_octword_size, ndescs);
+ MLX5_SET(mkc, mkc, access_mode_1_0, access_mode & 0x3);
+ MLX5_SET(mkc, mkc, access_mode_4_2, (access_mode >> 2) & 0x7);
+ MLX5_SET(mkc, mkc, umr_en, 1);
+ MLX5_SET(mkc, mkc, log_page_size, page_shift);
+}
+
+static int _mlx5_alloc_mkey_descs(struct ib_pd *pd, struct mlx5_ib_mr *mr,
+ int ndescs, int desc_size, int page_shift,
+ int access_mode, u32 *in, int inlen)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ int err;
+
+ mr->access_mode = access_mode;
+ mr->desc_size = desc_size;
+ mr->max_descs = ndescs;
+
+ err = mlx5_alloc_priv_descs(pd->device, mr, ndescs, desc_size);
+ if (err)
+ return err;
+
+ mlx5_set_umr_free_mkey(pd, in, ndescs, access_mode, page_shift);
+
+ err = mlx5_core_create_mkey(dev->mdev, &mr->mmkey, in, inlen);
+ if (err)
+ goto err_free_descs;
+
+ mr->mmkey.type = MLX5_MKEY_MR;
+ mr->ibmr.lkey = mr->mmkey.key;
+ mr->ibmr.rkey = mr->mmkey.key;
+
+ return 0;
+
+err_free_descs:
+ mlx5_free_priv_descs(mr);
+ return err;
+}
+
static struct mlx5_ib_mr *mlx5_ib_alloc_pi_mr(struct ib_pd *pd,
u32 max_num_sg, u32 max_num_meta_sg,
int desc_size, int access_mode)
{
- struct mlx5_ib_dev *dev = to_mdev(pd->device);
int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
int ndescs = ALIGN(max_num_sg + max_num_meta_sg, 4);
+ int page_shift = 0;
struct mlx5_ib_mr *mr;
- void *mkc;
u32 *in;
int err;
@@ -1667,48 +1715,28 @@ static struct mlx5_ib_mr *mlx5_ib_alloc_pi_mr(struct ib_pd *pd,
if (!mr)
return ERR_PTR(-ENOMEM);
+ mr->ibmr.pd = pd;
+ mr->ibmr.device = pd->device;
+
in = kzalloc(inlen, GFP_KERNEL);
if (!in) {
err = -ENOMEM;
goto err_free;
}
- mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
- MLX5_SET(mkc, mkc, free, 1);
- MLX5_SET(mkc, mkc, translations_octword_size, ndescs);
if (access_mode == MLX5_MKC_ACCESS_MODE_MTT)
- MLX5_SET(mkc, mkc, log_page_size, PAGE_SHIFT);
- MLX5_SET(mkc, mkc, qpn, 0xffffff);
- MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
+ page_shift = PAGE_SHIFT;
- mr->access_mode = access_mode;
-
- err = mlx5_alloc_priv_descs(pd->device, mr, ndescs, desc_size);
+ err = _mlx5_alloc_mkey_descs(pd, mr, ndescs, desc_size, page_shift,
+ access_mode, in, inlen);
if (err)
goto err_free_in;
- mr->desc_size = desc_size;
- mr->max_descs = ndescs;
-
- MLX5_SET(mkc, mkc, access_mode_1_0, mr->access_mode & 0x3);
- MLX5_SET(mkc, mkc, access_mode_4_2, (mr->access_mode >> 2) & 0x7);
- MLX5_SET(mkc, mkc, umr_en, 1);
- mr->ibmr.pd = pd;
- mr->ibmr.device = pd->device;
- err = mlx5_core_create_mkey(dev->mdev, &mr->mmkey, in, inlen);
- if (err)
- goto err_priv_descs;
-
- mr->mmkey.type = MLX5_MKEY_MR;
- mr->ibmr.lkey = mr->mmkey.key;
- mr->ibmr.rkey = mr->mmkey.key;
mr->umem = NULL;
kfree(in);
return mr;
-err_priv_descs:
- mlx5_free_priv_descs(mr);
err_free_in:
kfree(in);
err_free:
@@ -1716,6 +1744,92 @@ static struct mlx5_ib_mr *mlx5_ib_alloc_pi_mr(struct ib_pd *pd,
return ERR_PTR(err);
}
+static int mlx5_alloc_mem_reg_descs(struct ib_pd *pd, struct mlx5_ib_mr *mr,
+ int ndescs, u32 *in, int inlen)
+{
+ return _mlx5_alloc_mkey_descs(pd, mr, ndescs, sizeof(struct mlx5_mtt),
+ PAGE_SHIFT, MLX5_MKC_ACCESS_MODE_MTT, in,
+ inlen);
+}
+
+static int mlx5_alloc_sg_gaps_descs(struct ib_pd *pd, struct mlx5_ib_mr *mr,
+ int ndescs, u32 *in, int inlen)
+{
+ return _mlx5_alloc_mkey_descs(pd, mr, ndescs, sizeof(struct mlx5_klm),
+ 0, MLX5_MKC_ACCESS_MODE_KLMS, in, inlen);
+}
+
+static int mlx5_alloc_integrity_descs(struct ib_pd *pd, struct mlx5_ib_mr *mr,
+ int max_num_sg, int max_num_meta_sg,
+ u32 *in, int inlen)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ u32 psv_index[2];
+ void *mkc;
+ int err;
+
+ mr->sig = kzalloc(sizeof(*mr->sig), GFP_KERNEL);
+ if (!mr->sig)
+ return -ENOMEM;
+
+ /* create mem & wire PSVs */
+ err = mlx5_core_create_psv(dev->mdev, to_mpd(pd)->pdn, 2, psv_index);
+ if (err)
+ goto err_free_sig;
+
+ mr->sig->psv_memory.psv_idx = psv_index[0];
+ mr->sig->psv_wire.psv_idx = psv_index[1];
+
+ mr->sig->sig_status_checked = true;
+ mr->sig->sig_err_exists = false;
+ /* Next UMR, Arm SIGERR */
+ ++mr->sig->sigerr_count;
+ mr->klm_mr = mlx5_ib_alloc_pi_mr(pd, max_num_sg, max_num_meta_sg,
+ sizeof(struct mlx5_klm),
+ MLX5_MKC_ACCESS_MODE_KLMS);
+ if (IS_ERR(mr->klm_mr)) {
+ err = PTR_ERR(mr->klm_mr);
+ goto err_destroy_psv;
+ }
+ mr->mtt_mr = mlx5_ib_alloc_pi_mr(pd, max_num_sg, max_num_meta_sg,
+ sizeof(struct mlx5_mtt),
+ MLX5_MKC_ACCESS_MODE_MTT);
+ if (IS_ERR(mr->mtt_mr)) {
+ err = PTR_ERR(mr->mtt_mr);
+ goto err_free_klm_mr;
+ }
+
+ /* Set bsf descriptors for mkey */
+ mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
+ MLX5_SET(mkc, mkc, bsf_en, 1);
+ MLX5_SET(mkc, mkc, bsf_octword_size, MLX5_MKEY_BSF_OCTO_SIZE);
+
+ err = _mlx5_alloc_mkey_descs(pd, mr, 4, sizeof(struct mlx5_klm), 0,
+ MLX5_MKC_ACCESS_MODE_KLMS, in, inlen);
+ if (err)
+ goto err_free_mtt_mr;
+
+ return 0;
+
+err_free_mtt_mr:
+ dereg_mr(to_mdev(mr->mtt_mr->ibmr.device), mr->mtt_mr);
+ mr->mtt_mr = NULL;
+err_free_klm_mr:
+ dereg_mr(to_mdev(mr->klm_mr->ibmr.device), mr->klm_mr);
+ mr->klm_mr = NULL;
+err_destroy_psv:
+ if (mlx5_core_destroy_psv(dev->mdev, mr->sig->psv_memory.psv_idx))
+ mlx5_ib_warn(dev, "failed to destroy mem psv %d\n",
+ mr->sig->psv_memory.psv_idx);
+ if (mlx5_core_destroy_psv(dev->mdev, mr->sig->psv_wire.psv_idx))
+ mlx5_ib_warn(dev, "failed to destroy wire psv %d\n",
+ mr->sig->psv_wire.psv_idx);
+err_free_sig:
+ kfree(mr->sig);
+
+ return err;
+}
+
static struct ib_mr *__mlx5_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type, u32 max_num_sg,
u32 max_num_meta_sg)
@@ -1724,7 +1838,6 @@ static struct ib_mr *__mlx5_ib_alloc_mr(struct ib_pd *pd,
int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
int ndescs = ALIGN(max_num_sg, 4);
struct mlx5_ib_mr *mr;
- void *mkc;
u32 *in;
int err;
@@ -1738,121 +1851,32 @@ static struct ib_mr *__mlx5_ib_alloc_mr(struct ib_pd *pd,
goto err_free;
}
- mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
- MLX5_SET(mkc, mkc, free, 1);
- MLX5_SET(mkc, mkc, qpn, 0xffffff);
- MLX5_SET(mkc, mkc, pd, to_mpd(pd)->pdn);
-
- if (mr_type == IB_MR_TYPE_MEM_REG) {
- mr->access_mode = MLX5_MKC_ACCESS_MODE_MTT;
- MLX5_SET(mkc, mkc, translations_octword_size, ndescs);
- MLX5_SET(mkc, mkc, log_page_size, PAGE_SHIFT);
- err = mlx5_alloc_priv_descs(pd->device, mr,
- ndescs, sizeof(struct mlx5_mtt));
- if (err)
- goto err_free_in;
-
- mr->desc_size = sizeof(struct mlx5_mtt);
- mr->max_descs = ndescs;
- } else if (mr_type == IB_MR_TYPE_SG_GAPS) {
- mr->access_mode = MLX5_MKC_ACCESS_MODE_KLMS;
- MLX5_SET(mkc, mkc, translations_octword_size, ndescs);
-
- err = mlx5_alloc_priv_descs(pd->device, mr,
- ndescs, sizeof(struct mlx5_klm));
- if (err)
- goto err_free_in;
- mr->desc_size = sizeof(struct mlx5_klm);
- mr->max_descs = ndescs;
- } else if (mr_type == IB_MR_TYPE_INTEGRITY) {
- u32 psv_index[2];
-
- MLX5_SET(mkc, mkc, bsf_en, 1);
- MLX5_SET(mkc, mkc, bsf_octword_size, MLX5_MKEY_BSF_OCTO_SIZE);
- MLX5_SET(mkc, mkc, translations_octword_size, 4);
- mr->sig = kzalloc(sizeof(*mr->sig), GFP_KERNEL);
- if (!mr->sig) {
- err = -ENOMEM;
- goto err_free_in;
- }
+ mr->ibmr.device = pd->device;
+ mr->umem = NULL;
- /* create mem & wire PSVs */
- err = mlx5_core_create_psv(dev->mdev, to_mpd(pd)->pdn,
- 2, psv_index);
- if (err)
- goto err_free_sig;
-
- mr->access_mode = MLX5_MKC_ACCESS_MODE_KLMS;
- mr->sig->psv_memory.psv_idx = psv_index[0];
- mr->sig->psv_wire.psv_idx = psv_index[1];
-
- mr->sig->sig_status_checked = true;
- mr->sig->sig_err_exists = false;
- /* Next UMR, Arm SIGERR */
- ++mr->sig->sigerr_count;
- mr->klm_mr = mlx5_ib_alloc_pi_mr(pd, max_num_sg,
- max_num_meta_sg,
- sizeof(struct mlx5_klm),
- MLX5_MKC_ACCESS_MODE_KLMS);
- if (IS_ERR(mr->klm_mr)) {
- err = PTR_ERR(mr->klm_mr);
- goto err_destroy_psv;
- }
- mr->mtt_mr = mlx5_ib_alloc_pi_mr(pd, max_num_sg,
- max_num_meta_sg,
- sizeof(struct mlx5_mtt),
- MLX5_MKC_ACCESS_MODE_MTT);
- if (IS_ERR(mr->mtt_mr)) {
- err = PTR_ERR(mr->mtt_mr);
- goto err_free_klm_mr;
- }
- } else {
+ switch (mr_type) {
+ case IB_MR_TYPE_MEM_REG:
+ err = mlx5_alloc_mem_reg_descs(pd, mr, ndescs, in, inlen);
+ break;
+ case IB_MR_TYPE_SG_GAPS:
+ err = mlx5_alloc_sg_gaps_descs(pd, mr, ndescs, in, inlen);
+ break;
+ case IB_MR_TYPE_INTEGRITY:
+ err = mlx5_alloc_integrity_descs(pd, mr, max_num_sg,
+ max_num_meta_sg, in, inlen);
+ break;
+ default:
mlx5_ib_warn(dev, "Invalid mr type %d\n", mr_type);
err = -EINVAL;
- goto err_free_in;
}
- MLX5_SET(mkc, mkc, access_mode_1_0, mr->access_mode & 0x3);
- MLX5_SET(mkc, mkc, access_mode_4_2, (mr->access_mode >> 2) & 0x7);
- MLX5_SET(mkc, mkc, umr_en, 1);
-
- mr->ibmr.device = pd->device;
- err = mlx5_core_create_mkey(dev->mdev, &mr->mmkey, in, inlen);
if (err)
- goto err_free_pi_mr;
+ goto err_free_in;
- mr->mmkey.type = MLX5_MKEY_MR;
- mr->ibmr.lkey = mr->mmkey.key;
- mr->ibmr.rkey = mr->mmkey.key;
- mr->umem = NULL;
kfree(in);
return &mr->ibmr;
-err_free_pi_mr:
- if (mr->mtt_mr) {
- dereg_mr(to_mdev(mr->mtt_mr->ibmr.device), mr->mtt_mr);
- mr->mtt_mr = NULL;
- }
-err_free_klm_mr:
- if (mr->klm_mr) {
- dereg_mr(to_mdev(mr->klm_mr->ibmr.device), mr->klm_mr);
- mr->klm_mr = NULL;
- }
-err_destroy_psv:
- if (mr->sig) {
- if (mlx5_core_destroy_psv(dev->mdev,
- mr->sig->psv_memory.psv_idx))
- mlx5_ib_warn(dev, "failed to destroy mem psv %d\n",
- mr->sig->psv_memory.psv_idx);
- if (mlx5_core_destroy_psv(dev->mdev,
- mr->sig->psv_wire.psv_idx))
- mlx5_ib_warn(dev, "failed to destroy wire psv %d\n",
- mr->sig->psv_wire.psv_idx);
- }
- mlx5_free_priv_descs(mr);
-err_free_sig:
- kfree(mr->sig);
err_free_in:
kfree(in);
err_free:
--
2.16.3
