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net/ice/base: improve switch chained recipe

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When updating switch database with chained recipes from
firmware, where a null pointer derefence was occurring due to looking
into a sub-recipe entry which is not filled in.

Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>
This commit is contained in:
Qi Zhang 2019-08-29 10:36:33 +08:00 committed by Ferruh Yigit
parent 8b6e6e4024
commit eda40e22b8
2 changed files with 108 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ice/base/ice_protocol_type.h
View File

@ -135,6 +135,8 @@ enum ice_prot_id {
#define ICE_GRE_OF_HW 64 /* NVGRE */
#define ICE_META_DATA_ID_HW 255 /* this is used for tunnel type */
#define ICE_MDID_SIZE 2
#define ICE_TUN_FLAG_MDID 21
#define ICE_TUN_FLAG_MASK 0xFF
#define ICE_TUN_FLAG_FV_IND 2

164
drivers/net/ice/base/ice_switch.c
View File

@ -455,29 +455,24 @@ static void ice_get_recp_to_prof_map(struct ice_hw *hw);
static void ice_collect_result_idx(struct ice_aqc_recipe_data_elem *buf,
struct ice_sw_recipe *recp)
{
if (buf->content.result_indx & ICE_AQ_RECIPE_ID_IS_ROOT)
if (buf->content.result_indx & ICE_AQ_RECIPE_RESULT_EN)
ice_set_bit(buf->content.result_indx &
~ICE_AQ_RECIPE_ID_IS_ROOT, recp->res_idxs);
~ICE_AQ_RECIPE_RESULT_EN, recp->res_idxs);
}
/**
* ice_collect_result_idx_from_bitmap - copy result index values using bitmap
* @hw: pointer to hardware structure
* @recp: the recipe struct to copy data into
* ice_init_possible_res_bm - initialize possible result bitmap
* @pos_result_bm: pointer to the bitmap to initialize
*/
static void
ice_collect_result_idx_from_bitmap(struct ice_hw *hw,
struct ice_sw_recipe *recp)
static void ice_init_possible_res_bm(ice_bitmap_t *pos_result_bm)
{
u16 bit = 0;
u16 bit;
while (ICE_MAX_NUM_RECIPES >
(bit = ice_find_next_bit(recp->r_bitmap, ICE_MAX_NUM_RECIPES,
bit))) {
ice_collect_result_idx(hw->switch_info->recp_list[bit].root_buf,
recp);
bit++;
}
ice_zero_bitmap(pos_result_bm, ICE_MAX_FV_WORDS);
for (bit = 0; bit < ICE_MAX_FV_WORDS; bit++)
if (ICE_POSSIBLE_RES_IDX & BIT_ULL(bit))
ice_set_bit(bit, pos_result_bm);
}
/**
@ -495,14 +490,16 @@ static enum ice_status
ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
bool *refresh_required)
{
u16 i, sub_recps, fv_word_idx = 0, result_idx = 0;
ice_declare_bitmap(r_bitmap, ICE_MAX_NUM_PROFILES);
u16 result_idxs[ICE_MAX_CHAIN_RECIPE] = { 0 };
ice_declare_bitmap(possible_idx, ICE_MAX_FV_WORDS);
ice_declare_bitmap(result_bm, ICE_MAX_FV_WORDS);
struct ice_aqc_recipe_data_elem *tmp;
u16 num_recps = ICE_MAX_NUM_RECIPES;
struct ice_prot_lkup_ext *lkup_exts;
u16 i, sub_recps, fv_word_idx = 0;
enum ice_status status;
u8 is_root;
ice_zero_bitmap(result_bm, ICE_MAX_FV_WORDS);
ice_init_possible_res_bm(possible_idx);
/* we need a buffer big enough to accommodate all the recipes */
tmp = (struct ice_aqc_recipe_data_elem *)ice_calloc(hw,
@ -528,14 +525,18 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
ice_get_recp_to_prof_map(hw);
*refresh_required = false;
}
lkup_exts = &recps[rid].lkup_exts;
/* start populating all the entries for recps[rid] based on lkups from
* firmware
/* Start populating all the entries for recps[rid] based on lkups from
* firmware. Note that we are only creating the root recipe in our
* database.
*/
lkup_exts = &recps[rid].lkup_exts;
for (sub_recps = 0; sub_recps < num_recps; sub_recps++) {
struct ice_aqc_recipe_data_elem root_bufs = tmp[sub_recps];
struct ice_recp_grp_entry *rg_entry;
u8 prof_id, prot = 0;
u8 prof_id, idx, prot = 0;
bool is_root;
u16 off = 0;
rg_entry = (struct ice_recp_grp_entry *)
@ -544,15 +545,18 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
status = ICE_ERR_NO_MEMORY;
goto err_unroll;
}
/* When copying, clear the result index enable bit */
result_idxs[result_idx] = root_bufs.content.result_indx &
~ICE_AQ_RECIPE_RESULT_EN;
ice_memcpy(r_bitmap,
recipe_to_profile[tmp[sub_recps].recipe_indx],
sizeof(r_bitmap), ICE_NONDMA_TO_NONDMA);
idx = root_bufs.recipe_indx;
is_root = root_bufs.content.rid & ICE_AQ_RECIPE_ID_IS_ROOT;
/* Mark all result indices in this chain */
if (root_bufs.content.result_indx & ICE_AQ_RECIPE_RESULT_EN)
ice_set_bit(root_bufs.content.result_indx &
~ICE_AQ_RECIPE_RESULT_EN, result_bm);
/* get the first profile that is associated with rid */
prof_id = ice_find_first_bit(r_bitmap, ICE_MAX_NUM_PROFILES);
prof_id = ice_find_first_bit(recipe_to_profile[idx],
ICE_MAX_NUM_PROFILES);
for (i = 0; i < ICE_NUM_WORDS_RECIPE; i++) {
u8 lkup_indx = root_bufs.content.lkup_indx[i + 1];
@ -569,12 +573,8 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
* has ICE_AQ_RECIPE_LKUP_IGNORE or 0 since it isn't a
* valid offset value.
*/
if (result_idxs[0] == rg_entry->fv_idx[i] ||
result_idxs[1] == rg_entry->fv_idx[i] ||
result_idxs[2] == rg_entry->fv_idx[i] ||
result_idxs[3] == rg_entry->fv_idx[i] ||
result_idxs[4] == rg_entry->fv_idx[i] ||
rg_entry->fv_idx[i] == ICE_AQ_RECIPE_LKUP_IGNORE ||
if (ice_is_bit_set(possible_idx, rg_entry->fv_idx[i]) ||
rg_entry->fv_idx[i] & ICE_AQ_RECIPE_LKUP_IGNORE ||
rg_entry->fv_idx[i] == 0)
continue;
@ -588,7 +588,29 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
* recipe
*/
LIST_ADD(&rg_entry->l_entry, &recps[rid].rg_list);
/* Propagate some data to the recipe database */
recps[idx].is_root = is_root;
recps[idx].priority = root_bufs.content.act_ctrl_fwd_priority;
if (root_bufs.content.result_indx & ICE_AQ_RECIPE_RESULT_EN)
recps[idx].chain_idx = root_bufs.content.result_indx &
~ICE_AQ_RECIPE_RESULT_EN;
else
recps[idx].chain_idx = ICE_INVAL_CHAIN_IND;
if (!is_root)
continue;
/* Only do the following for root recipes entries */
ice_memcpy(recps[idx].r_bitmap, root_bufs.recipe_bitmap,
sizeof(recps[idx].r_bitmap), ICE_NONDMA_TO_NONDMA);
recps[idx].root_rid = root_bufs.content.rid &
~ICE_AQ_RECIPE_ID_IS_ROOT;
recps[idx].priority = root_bufs.content.act_ctrl_fwd_priority;
recps[idx].big_recp = (recps[rid].n_grp_count > 1);
}
/* Complete initialization of the root recipe entry */
lkup_exts->n_val_words = fv_word_idx;
recps[rid].n_grp_count = num_recps;
recps[rid].root_buf = (struct ice_aqc_recipe_data_elem *)
@ -600,26 +622,9 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
ice_memcpy(recps[rid].root_buf, tmp, recps[rid].n_grp_count *
sizeof(*recps[rid].root_buf), ICE_NONDMA_TO_NONDMA);
ice_memcpy(recps[rid].r_bitmap, tmp->recipe_bitmap,
sizeof(recps[rid].r_bitmap), ICE_NONDMA_TO_NONDMA);
if (tmp->content.result_indx & ICE_AQ_RECIPE_RESULT_EN)
recps[rid].chain_idx = tmp->content.result_indx &
~ICE_AQ_RECIPE_RESULT_EN;
else
recps[rid].chain_idx = ICE_INVAL_CHAIN_IND;
recps[rid].root_rid = tmp->content.rid & ~ICE_AQ_RECIPE_ID_IS_ROOT;
is_root = (tmp->content.rid & ICE_AQ_RECIPE_ID_IS_ROOT) != 0;
recps[rid].is_root = is_root;
recps[rid].big_recp = (is_root && recps[rid].n_grp_count > 1);
/* Copy non-result fv index values to recipe. This call will also update
* the result index bitmap appropriately.
*/
ice_collect_result_idx_from_bitmap(hw, &recps[rid]);
recps[rid].priority = tmp->content.act_ctrl_fwd_priority;
/* Copy result indexes */
ice_memcpy(recps[rid].res_idxs, result_bm, sizeof(recps[rid].res_idxs),
ICE_NONDMA_TO_NONDMA);
recps[rid].recp_created = true;
err_unroll:
@ -5038,10 +5043,10 @@ ice_find_free_recp_res_idx(struct ice_hw *hw, const ice_bitmap_t *profiles,
u16 count = 0;
u16 bit;
ice_zero_bitmap(possible_idx, ICE_MAX_FV_WORDS);
ice_zero_bitmap(free_idx, ICE_MAX_FV_WORDS);
ice_zero_bitmap(used_idx, ICE_MAX_FV_WORDS);
ice_zero_bitmap(recipes, ICE_MAX_NUM_RECIPES);
ice_init_possible_res_bm(possible_idx);
for (bit = 0; bit < ICE_MAX_FV_WORDS; bit++)
if (ICE_POSSIBLE_RES_IDX & BIT_ULL(bit))
@ -5503,6 +5508,34 @@ free_mem:
return status;
}
/**
* ice_add_special_words - Add words that are not protocols, such as metadata
* @rinfo: other information regarding the rule e.g. priority and action info
* @lkup_exts: lookup word structure
*/
static enum ice_status
ice_add_special_words(struct ice_adv_rule_info *rinfo,
struct ice_prot_lkup_ext *lkup_exts)
{
/* If this is a tunneled packet, then add recipe index to match the
* tunnel bit in the packet metadata flags.
*/
if (rinfo->tun_type != ICE_NON_TUN) {
if (lkup_exts->n_val_words < ICE_MAX_CHAIN_WORDS) {
u8 word = lkup_exts->n_val_words++;
lkup_exts->fv_words[word].prot_id = ICE_META_DATA_ID_HW;
lkup_exts->fv_words[word].off = ICE_TUN_FLAG_MDID *
ICE_MDID_SIZE;
lkup_exts->field_mask[word] = ICE_TUN_FLAG_MASK;
} else {
return ICE_ERR_MAX_LIMIT;
}
}
return ICE_SUCCESS;
}
/* ice_get_compat_fv_bitmap - Get compatible field vector bitmap for rule
* @hw: pointer to hardware structure
* @rinfo: other information regarding the rule e.g. priority and action info
@ -5650,6 +5683,13 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
ice_set_bit((u16)fvit->profile_id, profiles);
}
/* Create any special protocol/offset pairs, such as looking at tunnel
* bits by extracting metadata
*/
status = ice_add_special_words(rinfo, lkup_exts);
if (status)
goto err_free_lkup_exts;
/* Look for a recipe which matches our requested fv / mask list */
*rid = ice_find_recp(hw, lkup_exts);
if (*rid < ICE_MAX_NUM_RECIPES)
@ -6424,6 +6464,14 @@ ice_rem_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
if (!count)
return ICE_ERR_CFG;
}
/* Create any special protocol/offset pairs, such as looking at tunnel
* bits by extracting metadata
*/
status = ice_add_special_words(rinfo, &lkup_exts);
if (status)
return status;
rid = ice_find_recp(hw, &lkup_exts);
/* If did not find a recipe that match the existing criteria */
if (rid == ICE_MAX_NUM_RECIPES)