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Commit 092c4098 authored by Alexander Wetzel's avatar Alexander Wetzel Committed by Johannes Berg
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mac80211: Optimize tailroom_needed update checks 



Optimize/cleanup the delay tailroom checks and adds one missing tailroom
update.

Signed-off-by: default avatarAlexander Wetzel <alexander@wetzel-home.de>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 8dbb000e

net/mac80211/key.c

+15 −9
Original line number Diff line number Diff line
@@ -140,6 +140,12 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) 
		 * so clear that flag now to avoid trying to remove

		 * it again later.

		 */

		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&

		    !(key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

					 IEEE80211_KEY_FLAG_PUT_MIC_SPACE |

					 IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

			increment_tailroom_need_count(sdata);



		key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;

		return -EINVAL;

	}
@@ -177,9 +183,9 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) 
	if (!ret) {

		key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;



		if (!((key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

					   IEEE80211_KEY_FLAG_PUT_MIC_SPACE)) ||

		      (key->conf.flags & IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

		if (!(key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

					 IEEE80211_KEY_FLAG_PUT_MIC_SPACE |

					 IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

			decrease_tailroom_need_count(sdata, 1);



		WARN_ON((key->conf.flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) &&
@@ -243,9 +249,9 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) 
	sta = key->sta;

	sdata = key->sdata;



	if (!((key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

				   IEEE80211_KEY_FLAG_PUT_MIC_SPACE)) ||

	      (key->conf.flags & IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

	if (!(key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

				 IEEE80211_KEY_FLAG_PUT_MIC_SPACE |

				 IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

		increment_tailroom_need_count(sdata);



	key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
@@ -1188,9 +1194,9 @@ void ieee80211_remove_key(struct ieee80211_key_conf *keyconf) 
	if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {

		key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;



		if (!((key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

					   IEEE80211_KEY_FLAG_PUT_MIC_SPACE)) ||

		      (key->conf.flags & IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

		if (!(key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |

					 IEEE80211_KEY_FLAG_PUT_MIC_SPACE |

					 IEEE80211_KEY_FLAG_RESERVE_TAILROOM)))

			increment_tailroom_need_count(key->sdata);

	}