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Message-ID: <20240618141157.1881093-5-marcin.szycik@linux.intel.com>
Date: Tue, 18 Jun 2024 16:11:55 +0200
From: Marcin Szycik <marcin.szycik@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
michal.swiatkowski@...ux.intel.com,
przemyslaw.kitszel@...el.com,
Marcin Szycik <marcin.szycik@...ux.intel.com>
Subject: [PATCH iwl-next 4/6] ice: remove unused recipe bookkeeping data
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Remove root_buf from recipe struct. Its only usage was in ice_find_recp(),
where if recipe had an inverse action, it was skipped, but actually the
driver never adds inverse actions, so effectively it was pointless.
Without root_buf, the recipe data element in ice_add_sw_recipe() does
not need to be persistent and can also be automatically deallocated with
__free, which nicely simplifies unroll.
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
---
drivers/net/ethernet/intel/ice/ice_common.c | 1 -
drivers/net/ethernet/intel/ice/ice_switch.c | 55 ++++++---------------
drivers/net/ethernet/intel/ice/ice_switch.h | 2 -
3 files changed, 15 insertions(+), 43 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 60ad7774812c..df1623ddbaf6 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -993,7 +993,6 @@ static void ice_cleanup_fltr_mgmt_struct(struct ice_hw *hw)
devm_kfree(ice_hw_to_dev(hw), lst_itr);
}
}
- devm_kfree(ice_hw_to_dev(hw), recps[i].root_buf);
}
ice_rm_all_sw_replay_rule_info(hw);
devm_kfree(ice_hw_to_dev(hw), sw->recp_list);
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 2f67fbb73fd1..f8f9d192d345 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -2445,13 +2445,6 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
lkup_exts->n_val_words = fv_word_idx;
recps[rid].big_recp = (num_recps > 1);
recps[rid].n_grp_count = (u8)num_recps;
- recps[rid].root_buf = devm_kmemdup(ice_hw_to_dev(hw), tmp,
- recps[rid].n_grp_count * sizeof(*recps[rid].root_buf),
- GFP_KERNEL);
- if (!recps[rid].root_buf) {
- status = -ENOMEM;
- goto err_unroll;
- }
/* Copy result indexes */
bitmap_copy(recps[rid].res_idxs, result_bm, ICE_MAX_FV_WORDS);
@@ -4768,11 +4761,6 @@ ice_find_recp(struct ice_hw *hw, struct ice_prot_lkup_ext *lkup_exts,
continue;
}
- /* Skip inverse action recipes */
- if (recp[i].root_buf && recp[i].root_buf->content.act_ctrl &
- ICE_AQ_RECIPE_ACT_INV_ACT)
- continue;
-
/* if number of words we are looking for match */
if (lkup_exts->n_val_words == recp[i].lkup_exts.n_val_words) {
struct ice_fv_word *ar = recp[i].lkup_exts.fv_words;
@@ -5081,9 +5069,9 @@ static int
ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
unsigned long *profiles)
{
+ struct ice_aqc_recipe_data_elem *buf __free(kfree) = NULL;
DECLARE_BITMAP(result_idx_bm, ICE_MAX_FV_WORDS);
struct ice_aqc_recipe_content *content;
- struct ice_aqc_recipe_data_elem *buf;
struct ice_recp_grp_entry *entry;
u16 free_res_idx;
u8 chain_idx;
@@ -5112,12 +5100,9 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
if (rm->n_grp_count > ICE_MAX_CHAIN_RECIPE)
return -ENOSPC;
- buf = devm_kcalloc(ice_hw_to_dev(hw), rm->n_grp_count, sizeof(*buf),
- GFP_KERNEL);
- if (!buf) {
- status = -ENOMEM;
- goto err_mem;
- }
+ buf = kcalloc(rm->n_grp_count, sizeof(*buf), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
bitmap_zero(rm->r_bitmap, ICE_MAX_NUM_RECIPES);
@@ -5130,7 +5115,7 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
status = ice_alloc_recipe(hw, &entry->rid);
if (status)
- goto err_unroll;
+ return status;
content = &buf[recps].content;
@@ -5160,8 +5145,7 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
*/
if (chain_idx >= ICE_MAX_FV_WORDS) {
ice_debug(hw, ICE_DBG_SW, "No chain index available\n");
- status = -ENOSPC;
- goto err_unroll;
+ return -ENOSPC;
}
entry->chain_idx = chain_idx;
@@ -5215,7 +5199,7 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
*/
status = ice_alloc_recipe(hw, &rid);
if (status)
- goto err_unroll;
+ return status;
content = &buf[recps].content;
@@ -5228,10 +5212,9 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
last_chain_entry = devm_kzalloc(ice_hw_to_dev(hw),
sizeof(*last_chain_entry),
GFP_KERNEL);
- if (!last_chain_entry) {
- status = -ENOMEM;
- goto err_unroll;
- }
+ if (!last_chain_entry)
+ return -ENOMEM;
+
last_chain_entry->rid = rid;
memset(&content->lkup_indx, 0, sizeof(content->lkup_indx));
/* All recipes use look-up index 0 to match switch ID. */
@@ -5265,12 +5248,12 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
}
status = ice_acquire_change_lock(hw, ICE_RES_WRITE);
if (status)
- goto err_unroll;
+ return status;
status = ice_aq_add_recipe(hw, buf, rm->n_grp_count, NULL);
ice_release_change_lock(hw);
if (status)
- goto err_unroll;
+ return status;
/* Every recipe that just got created add it to the recipe
* book keeping list
@@ -5288,10 +5271,8 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
idx_found = true;
}
- if (!idx_found) {
- status = -EIO;
- goto err_unroll;
- }
+ if (!idx_found)
+ return -EIO;
recp = &sw->recp_list[entry->rid];
is_root = (rm->root_rid == entry->rid);
@@ -5327,13 +5308,8 @@ ice_add_sw_recipe(struct ice_hw *hw, struct ice_sw_recipe *rm,
recp->allow_pass_l2 = rm->allow_pass_l2;
recp->recp_created = true;
}
- rm->root_buf = buf;
- return status;
-err_unroll:
-err_mem:
- devm_kfree(ice_hw_to_dev(hw), buf);
- return status;
+ return 0;
}
/**
@@ -5632,7 +5608,6 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
devm_kfree(ice_hw_to_dev(hw), fvit);
}
- devm_kfree(ice_hw_to_dev(hw), rm->root_buf);
kfree(rm);
err_free_lkup_exts:
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.h b/drivers/net/ethernet/intel/ice/ice_switch.h
index ad98e98c812d..0c410ce29700 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.h
+++ b/drivers/net/ethernet/intel/ice/ice_switch.h
@@ -274,8 +274,6 @@ struct ice_sw_recipe {
struct list_head rg_list;
- /* AQ buffer associated with this recipe */
- struct ice_aqc_recipe_data_elem *root_buf;
/* This struct saves the fv_words for a given lookup */
struct ice_prot_lkup_ext lkup_exts;
};
--
2.45.0
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