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Date: Tue, 22 Feb 2022 13:41:51 +0100
From: Marcin Szycik <marcin.szycik@...ux.intel.com>
To: netdev@...r.kernel.org
Cc: michal.swiatkowski@...ux.intel.com, wojciech.drewek@...el.com,
davem@...emloft.net, kuba@...nel.org, pablo@...filter.org,
laforge@...monks.org, jiri@...nulli.us,
osmocom-net-gprs@...ts.osmocom.org,
intel-wired-lan@...ts.osuosl.org
Subject: [PATCH net-next v8 6/7] ice: Fix FV offset searching
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Checking only protocol ids while searching for correct FVs can lead to a
situation, when incorrect FV will be added to the list. Incorrect means
that FV has correct protocol id but incorrect offset.
Call ice_get_sw_fv_list with ice_prot_lkup_ext struct which contains all
protocol ids with offsets.
With this modification allocating and collecting protocol ids list is
not longer needed.
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
---
v7: Fix ice_get_sw_fv_list kernel-doc
---
.../net/ethernet/intel/ice/ice_flex_pipe.c | 21 ++++------
.../net/ethernet/intel/ice/ice_flex_pipe.h | 2 +-
drivers/net/ethernet/intel/ice/ice_switch.c | 39 +------------------
3 files changed, 11 insertions(+), 51 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
index 38fe0a7e6975..45ce9a2bb572 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
@@ -1871,20 +1871,19 @@ ice_get_sw_fv_bitmap(struct ice_hw *hw, enum ice_prof_type req_profs,
/**
* ice_get_sw_fv_list
* @hw: pointer to the HW structure
- * @prot_ids: field vector to search for with a given protocol ID
- * @ids_cnt: lookup/protocol count
+ * @lkups: list of protocol types
* @bm: bitmap of field vectors to consider
* @fv_list: Head of a list
*
* Finds all the field vector entries from switch block that contain
- * a given protocol ID and returns a list of structures of type
+ * a given protocol ID and offset and returns a list of structures of type
* "ice_sw_fv_list_entry". Every structure in the list has a field vector
* definition and profile ID information
* NOTE: The caller of the function is responsible for freeing the memory
* allocated for every list entry.
*/
int
-ice_get_sw_fv_list(struct ice_hw *hw, u8 *prot_ids, u16 ids_cnt,
+ice_get_sw_fv_list(struct ice_hw *hw, struct ice_prot_lkup_ext *lkups,
unsigned long *bm, struct list_head *fv_list)
{
struct ice_sw_fv_list_entry *fvl;
@@ -1896,7 +1895,7 @@ ice_get_sw_fv_list(struct ice_hw *hw, u8 *prot_ids, u16 ids_cnt,
memset(&state, 0, sizeof(state));
- if (!ids_cnt || !hw->seg)
+ if (!lkups->n_val_words || !hw->seg)
return -EINVAL;
ice_seg = hw->seg;
@@ -1915,20 +1914,16 @@ ice_get_sw_fv_list(struct ice_hw *hw, u8 *prot_ids, u16 ids_cnt,
if (!test_bit((u16)offset, bm))
continue;
- for (i = 0; i < ids_cnt; i++) {
+ for (i = 0; i < lkups->n_val_words; i++) {
int j;
- /* This code assumes that if a switch field vector line
- * has a matching protocol, then this line will contain
- * the entries necessary to represent every field in
- * that protocol header.
- */
for (j = 0; j < hw->blk[ICE_BLK_SW].es.fvw; j++)
- if (fv->ew[j].prot_id == prot_ids[i])
+ if (fv->ew[j].prot_id == lkups->fv_words[i].prot_id &&
+ fv->ew[j].off == lkups->fv_words[i].off)
break;
if (j >= hw->blk[ICE_BLK_SW].es.fvw)
break;
- if (i + 1 == ids_cnt) {
+ if (i + 1 == lkups->n_val_words) {
fvl = devm_kzalloc(ice_hw_to_dev(hw),
sizeof(*fvl), GFP_KERNEL);
if (!fvl)
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
index 2fd5312494c7..9c530c86703e 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
@@ -87,7 +87,7 @@ ice_get_sw_fv_bitmap(struct ice_hw *hw, enum ice_prof_type type,
void
ice_init_prof_result_bm(struct ice_hw *hw);
int
-ice_get_sw_fv_list(struct ice_hw *hw, u8 *prot_ids, u16 ids_cnt,
+ice_get_sw_fv_list(struct ice_hw *hw, struct ice_prot_lkup_ext *lkups,
unsigned long *bm, struct list_head *fv_list);
int
ice_pkg_buf_unreserve_section(struct ice_buf_build *bld, u16 count);
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 4143728a1919..915aa693170c 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -4506,41 +4506,6 @@ ice_create_recipe_group(struct ice_hw *hw, struct ice_sw_recipe *rm,
return status;
}
-/**
- * ice_get_fv - get field vectors/extraction sequences for spec. lookup types
- * @hw: pointer to hardware structure
- * @lkups: lookup elements or match criteria for the advanced recipe, one
- * structure per protocol header
- * @lkups_cnt: number of protocols
- * @bm: bitmap of field vectors to consider
- * @fv_list: pointer to a list that holds the returned field vectors
- */
-static int
-ice_get_fv(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
- unsigned long *bm, struct list_head *fv_list)
-{
- u8 *prot_ids;
- int status;
- u16 i;
-
- prot_ids = kcalloc(lkups_cnt, sizeof(*prot_ids), GFP_KERNEL);
- if (!prot_ids)
- return -ENOMEM;
-
- for (i = 0; i < lkups_cnt; i++)
- if (!ice_prot_type_to_id(lkups[i].type, &prot_ids[i])) {
- status = -EIO;
- goto free_mem;
- }
-
- /* Find field vectors that include all specified protocol types */
- status = ice_get_sw_fv_list(hw, prot_ids, lkups_cnt, bm, fv_list);
-
-free_mem:
- kfree(prot_ids);
- return status;
-}
-
/**
* ice_tun_type_match_word - determine if tun type needs a match mask
* @tun_type: tunnel type
@@ -4688,11 +4653,11 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
/* Get bitmap of field vectors (profiles) that are compatible with the
* rule request; only these will be searched in the subsequent call to
- * ice_get_fv.
+ * ice_get_sw_fv_list.
*/
ice_get_compat_fv_bitmap(hw, rinfo, fv_bitmap);
- status = ice_get_fv(hw, lkups, lkups_cnt, fv_bitmap, &rm->fv_list);
+ status = ice_get_sw_fv_list(hw, lkup_exts, fv_bitmap, &rm->fv_list);
if (status)
goto err_unroll;
--
2.35.1
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