[PATCH net-next v9 6/7] ice: Fix FV offset searching

From: Michal Swiatkowski &lt;michal.swiatkowski(a)linux.intel.com&gt; 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 &lt;michal.swiatkowski(a)linux.intel.com&gt; --- 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