diff options
author | Bruce Allan <bruce.w.allan@intel.com> | 2020-09-14 08:37:14 -0700 |
---|---|---|
committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2020-12-09 08:11:13 -0800 |
commit | 88dcfdb4cd82ff3c4cf5d4874fabb6adaaf1ce63 (patch) | |
tree | 2eb98da961ebfd7ccb389ec333e5225adab5cecb /drivers/net/ethernet/intel | |
parent | afae3cc2da100ead3cd6ef4bb1fb8bc9d4b817c5 (diff) | |
download | linux-88dcfdb4cd82ff3c4cf5d4874fabb6adaaf1ce63.tar.bz2 |
ice: cleanup stack hog
In ice_flow_add_prof_sync(), struct ice_flow_prof_params has recently
grown in size hogging stack space when allocated there. Hogging stack
space should be avoided. Change allocation to be on the heap when needed.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Harikumar Bokkena <harikumarx.bokkena@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel')
-rw-r--r-- | drivers/net/ethernet/intel/ice/ice_flow.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_flow.c b/drivers/net/ethernet/intel/ice/ice_flow.c index eadc85aee389..2a92071bd7d1 100644 --- a/drivers/net/ethernet/intel/ice/ice_flow.c +++ b/drivers/net/ethernet/intel/ice/ice_flow.c @@ -708,37 +708,42 @@ ice_flow_add_prof_sync(struct ice_hw *hw, enum ice_block blk, struct ice_flow_seg_info *segs, u8 segs_cnt, struct ice_flow_prof **prof) { - struct ice_flow_prof_params params; + struct ice_flow_prof_params *params; enum ice_status status; u8 i; if (!prof) return ICE_ERR_BAD_PTR; - memset(¶ms, 0, sizeof(params)); - params.prof = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*params.prof), - GFP_KERNEL); - if (!params.prof) + params = kzalloc(sizeof(*params), GFP_KERNEL); + if (!params) return ICE_ERR_NO_MEMORY; + params->prof = devm_kzalloc(ice_hw_to_dev(hw), sizeof(*params->prof), + GFP_KERNEL); + if (!params->prof) { + status = ICE_ERR_NO_MEMORY; + goto free_params; + } + /* initialize extraction sequence to all invalid (0xff) */ for (i = 0; i < ICE_MAX_FV_WORDS; i++) { - params.es[i].prot_id = ICE_PROT_INVALID; - params.es[i].off = ICE_FV_OFFSET_INVAL; + params->es[i].prot_id = ICE_PROT_INVALID; + params->es[i].off = ICE_FV_OFFSET_INVAL; } - params.blk = blk; - params.prof->id = prof_id; - params.prof->dir = dir; - params.prof->segs_cnt = segs_cnt; + params->blk = blk; + params->prof->id = prof_id; + params->prof->dir = dir; + params->prof->segs_cnt = segs_cnt; /* Make a copy of the segments that need to be persistent in the flow * profile instance */ for (i = 0; i < segs_cnt; i++) - memcpy(¶ms.prof->segs[i], &segs[i], sizeof(*segs)); + memcpy(¶ms->prof->segs[i], &segs[i], sizeof(*segs)); - status = ice_flow_proc_segs(hw, ¶ms); + status = ice_flow_proc_segs(hw, params); if (status) { ice_debug(hw, ICE_DBG_FLOW, "Error processing a flow's packet segments\n"); @@ -746,19 +751,22 @@ ice_flow_add_prof_sync(struct ice_hw *hw, enum ice_block blk, } /* Add a HW profile for this flow profile */ - status = ice_add_prof(hw, blk, prof_id, (u8 *)params.ptypes, params.es); + status = ice_add_prof(hw, blk, prof_id, (u8 *)params->ptypes, + params->es); if (status) { ice_debug(hw, ICE_DBG_FLOW, "Error adding a HW flow profile\n"); goto out; } - INIT_LIST_HEAD(¶ms.prof->entries); - mutex_init(¶ms.prof->entries_lock); - *prof = params.prof; + INIT_LIST_HEAD(¶ms->prof->entries); + mutex_init(¶ms->prof->entries_lock); + *prof = params->prof; out: if (status) - devm_kfree(ice_hw_to_dev(hw), params.prof); + devm_kfree(ice_hw_to_dev(hw), params->prof); +free_params: + kfree(params); return status; } |