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mac80211: assume 2-byte aligning for 802.11 packets, slightly improves code size and performance
SVN-Revision: 34910
This commit is contained in:
Felix Fietkau
parent
41a039f464
commit
29d737a976
@ -28,6 +28,33 @@
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if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -173,7 +173,7 @@ struct ieee80211_chanctx_conf {
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u8 rx_chains_static, rx_chains_dynamic;
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- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
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+ u8 drv_priv[0] __aligned(sizeof(void *));
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};
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/**
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@@ -1059,7 +1059,7 @@ struct ieee80211_vif {
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u32 driver_flags;
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/* must be last */
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- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
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+ u8 drv_priv[0] __aligned(sizeof(void *));
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};
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static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
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@@ -1209,7 +1209,7 @@ struct ieee80211_sta {
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u8 max_sp;
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/* must be last */
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- u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
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+ u8 drv_priv[0] __aligned(sizeof(void *));
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};
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/**
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@@ -1369,6 +1369,10 @@ struct ieee80211_tx_control {
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* @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any
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* P2P Interface. This will be honoured even if more than one interface
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@ -826,3 +853,354 @@
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void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
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struct ieee80211_chanctx *chanctx);
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--- a/include/linux/ieee80211.h
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+++ b/include/linux/ieee80211.h
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@@ -180,7 +180,7 @@ struct ieee80211_hdr {
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u8 addr3[6];
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__le16 seq_ctrl;
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u8 addr4[6];
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-} __attribute__ ((packed));
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+} __packed;
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struct ieee80211_hdr_3addr {
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__le16 frame_control;
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@@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr {
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u8 addr2[6];
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u8 addr3[6];
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__le16 seq_ctrl;
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-} __attribute__ ((packed));
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+} __packed;
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struct ieee80211_qos_hdr {
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__le16 frame_control;
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@@ -199,7 +199,7 @@ struct ieee80211_qos_hdr {
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u8 addr3[6];
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__le16 seq_ctrl;
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__le16 qos_ctrl;
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
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@@ -576,7 +576,7 @@ struct ieee80211s_hdr {
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__le32 seqnum;
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u8 eaddr1[6];
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u8 eaddr2[6];
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-} __attribute__ ((packed));
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+} __packed;
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/* Mesh flags */
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#define MESH_FLAGS_AE_A4 0x1
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@@ -614,7 +614,7 @@ struct ieee80211_quiet_ie {
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u8 period;
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__le16 duration;
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__le16 offset;
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* struct ieee80211_msrment_ie
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@@ -626,7 +626,7 @@ struct ieee80211_msrment_ie {
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u8 mode;
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u8 type;
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u8 request[0];
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* struct ieee80211_channel_sw_ie
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@@ -637,7 +637,7 @@ struct ieee80211_channel_sw_ie {
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u8 mode;
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u8 new_ch_num;
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u8 count;
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* struct ieee80211_tim
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@@ -650,7 +650,7 @@ struct ieee80211_tim_ie {
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u8 bitmap_ctrl;
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/* variable size: 1 - 251 bytes */
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u8 virtual_map[1];
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* struct ieee80211_meshconf_ie
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@@ -665,7 +665,7 @@ struct ieee80211_meshconf_ie {
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u8 meshconf_auth;
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u8 meshconf_form;
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u8 meshconf_cap;
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-} __attribute__ ((packed));
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+} __packed;
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/**
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* enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
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@@ -695,7 +695,7 @@ struct ieee80211_rann_ie {
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__le32 rann_seq;
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__le32 rann_interval;
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__le32 rann_metric;
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-} __attribute__ ((packed));
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+} __packed;
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enum ieee80211_rann_flags {
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RANN_FLAG_IS_GATE = 1 << 0,
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@@ -717,33 +717,33 @@ struct ieee80211_mgmt {
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__le16 status_code;
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/* possibly followed by Challenge text */
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u8 variable[0];
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- } __attribute__ ((packed)) auth;
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+ } __packed auth;
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struct {
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__le16 reason_code;
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- } __attribute__ ((packed)) deauth;
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+ } __packed deauth;
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struct {
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__le16 capab_info;
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__le16 listen_interval;
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/* followed by SSID and Supported rates */
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u8 variable[0];
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- } __attribute__ ((packed)) assoc_req;
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+ } __packed assoc_req;
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struct {
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__le16 capab_info;
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__le16 status_code;
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__le16 aid;
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/* followed by Supported rates */
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u8 variable[0];
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- } __attribute__ ((packed)) assoc_resp, reassoc_resp;
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+ } __packed assoc_resp, reassoc_resp;
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struct {
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__le16 capab_info;
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__le16 listen_interval;
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u8 current_ap[6];
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/* followed by SSID and Supported rates */
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u8 variable[0];
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- } __attribute__ ((packed)) reassoc_req;
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+ } __packed reassoc_req;
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struct {
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__le16 reason_code;
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- } __attribute__ ((packed)) disassoc;
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+ } __packed disassoc;
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struct {
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__le64 timestamp;
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__le16 beacon_int;
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@@ -751,11 +751,11 @@ struct ieee80211_mgmt {
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/* followed by some of SSID, Supported rates,
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* FH Params, DS Params, CF Params, IBSS Params, TIM */
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u8 variable[0];
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- } __attribute__ ((packed)) beacon;
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+ } __packed beacon;
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struct {
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/* only variable items: SSID, Supported rates */
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u8 variable[0];
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- } __attribute__ ((packed)) probe_req;
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+ } __packed probe_req;
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struct {
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__le64 timestamp;
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__le16 beacon_int;
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@@ -763,7 +763,7 @@ struct ieee80211_mgmt {
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/* followed by some of SSID, Supported rates,
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* FH Params, DS Params, CF Params, IBSS Params */
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u8 variable[0];
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- } __attribute__ ((packed)) probe_resp;
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+ } __packed probe_resp;
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struct {
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u8 category;
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union {
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@@ -772,55 +772,55 @@ struct ieee80211_mgmt {
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u8 dialog_token;
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u8 status_code;
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u8 variable[0];
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- } __attribute__ ((packed)) wme_action;
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+ } __packed wme_action;
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struct{
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u8 action_code;
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u8 element_id;
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u8 length;
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struct ieee80211_channel_sw_ie sw_elem;
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- } __attribute__((packed)) chan_switch;
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+ } __packed chan_switch;
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struct{
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u8 action_code;
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u8 dialog_token;
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u8 element_id;
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u8 length;
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struct ieee80211_msrment_ie msr_elem;
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- } __attribute__((packed)) measurement;
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+ } __packed measurement;
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struct{
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u8 action_code;
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u8 dialog_token;
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__le16 capab;
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__le16 timeout;
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__le16 start_seq_num;
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- } __attribute__((packed)) addba_req;
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+ } __packed addba_req;
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struct{
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u8 action_code;
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u8 dialog_token;
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__le16 status;
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__le16 capab;
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__le16 timeout;
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- } __attribute__((packed)) addba_resp;
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+ } __packed addba_resp;
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struct{
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u8 action_code;
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__le16 params;
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__le16 reason_code;
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- } __attribute__((packed)) delba;
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+ } __packed delba;
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struct {
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u8 action_code;
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u8 variable[0];
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- } __attribute__((packed)) self_prot;
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+ } __packed self_prot;
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struct{
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u8 action_code;
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u8 variable[0];
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- } __attribute__((packed)) mesh_action;
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+ } __packed mesh_action;
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struct {
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u8 action;
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u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
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- } __attribute__ ((packed)) sa_query;
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+ } __packed sa_query;
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struct {
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u8 action;
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u8 smps_control;
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- } __attribute__ ((packed)) ht_smps;
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+ } __packed ht_smps;
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struct {
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u8 action_code;
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u8 dialog_token;
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@@ -828,9 +828,9 @@ struct ieee80211_mgmt {
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u8 variable[0];
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} __packed tdls_discover_resp;
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} u;
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- } __attribute__ ((packed)) action;
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+ } __packed action;
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} u;
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-} __attribute__ ((packed));
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+} __packed;
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/* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
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#define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
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@@ -846,7 +846,7 @@ struct ieee80211_mmie {
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__le16 key_id;
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u8 sequence_number[6];
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u8 mic[8];
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-} __attribute__ ((packed));
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+} __packed;
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struct ieee80211_vendor_ie {
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u8 element_id;
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@@ -861,20 +861,20 @@ struct ieee80211_rts {
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__le16 duration;
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u8 ra[6];
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u8 ta[6];
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-} __attribute__ ((packed));
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+} __packed;
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struct ieee80211_cts {
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__le16 frame_control;
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__le16 duration;
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u8 ra[6];
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-} __attribute__ ((packed));
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+} __packed;
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struct ieee80211_pspoll {
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__le16 frame_control;
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__le16 aid;
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u8 bssid[6];
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u8 ta[6];
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-} __attribute__ ((packed));
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+} __packed;
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/* TDLS */
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@@ -967,7 +967,7 @@ struct ieee80211_bar {
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__u8 ta[6];
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__le16 control;
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__le16 start_seq_num;
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-} __attribute__((packed));
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+} __packed;
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/* 802.11 BAR control masks */
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#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
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@@ -992,7 +992,7 @@ struct ieee80211_mcs_info {
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__le16 rx_highest;
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u8 tx_params;
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u8 reserved[3];
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-} __attribute__((packed));
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+} __packed;
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/* 802.11n HT capability MSC set */
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#define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff
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@@ -1031,7 +1031,7 @@ struct ieee80211_ht_cap {
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__le16 extended_ht_cap_info;
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__le32 tx_BF_cap_info;
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u8 antenna_selection_info;
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-} __attribute__ ((packed));
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+} __packed;
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/* 802.11n HT capabilities masks (for cap_info) */
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#define IEEE80211_HT_CAP_LDPC_CODING 0x0001
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@@ -1102,7 +1102,7 @@ struct ieee80211_ht_operation {
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__le16 operation_mode;
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__le16 stbc_param;
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u8 basic_set[16];
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-} __attribute__ ((packed));
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+} __packed;
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/* for ht_param */
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#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03
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@@ -1832,14 +1832,14 @@ struct ieee80211_country_ie_triplet {
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u8 first_channel;
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u8 num_channels;
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s8 max_power;
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- } __attribute__ ((packed)) chans;
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+ } __packed chans;
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struct {
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u8 reg_extension_id;
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u8 reg_class;
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u8 coverage_class;
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- } __attribute__ ((packed)) ext;
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+ } __packed ext;
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};
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-} __attribute__ ((packed));
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+} __packed;
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enum ieee80211_timeout_interval_type {
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WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
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--- a/include/net/cfg80211.h
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+++ b/include/net/cfg80211.h
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@@ -1256,7 +1256,7 @@ struct cfg80211_bss {
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u8 bssid[ETH_ALEN];
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- u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
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+ u8 priv[0] __aligned(sizeof(void *));
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};
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/**
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@@ -2395,7 +2395,7 @@ struct wiphy {
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const struct iw_handler_def *wext;
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#endif
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- char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
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+ char priv[0] __aligned(NETDEV_ALIGN);
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};
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static inline struct net *wiphy_net(struct wiphy *wiphy)
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--- a/net/wireless/core.h
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+++ b/net/wireless/core.h
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@@ -86,7 +86,7 @@ struct cfg80211_registered_device {
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/* must be last because of the way we do wiphy_priv(),
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* and it should at least be aligned to NETDEV_ALIGN */
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- struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
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+ struct wiphy wiphy __aligned(NETDEV_ALIGN);
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};
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static inline
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@ -0,0 +1,71 @@
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--- a/include/linux/ieee80211.h
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+++ b/include/linux/ieee80211.h
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@@ -180,7 +180,7 @@ struct ieee80211_hdr {
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u8 addr3[6];
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__le16 seq_ctrl;
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u8 addr4[6];
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-} __packed;
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+} __packed __aligned(2);
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struct ieee80211_hdr_3addr {
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__le16 frame_control;
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@@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr {
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u8 addr2[6];
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u8 addr3[6];
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__le16 seq_ctrl;
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-} __packed;
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+} __packed __aligned(2);
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struct ieee80211_qos_hdr {
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__le16 frame_control;
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@@ -199,7 +199,7 @@ struct ieee80211_qos_hdr {
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u8 addr3[6];
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__le16 seq_ctrl;
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__le16 qos_ctrl;
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-} __packed;
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+} __packed __aligned(2);
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/**
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* ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
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@@ -576,7 +576,7 @@ struct ieee80211s_hdr {
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__le32 seqnum;
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u8 eaddr1[6];
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u8 eaddr2[6];
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-} __packed;
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+} __packed __aligned(2);
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/* Mesh flags */
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#define MESH_FLAGS_AE_A4 0x1
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@@ -830,7 +830,7 @@ struct ieee80211_mgmt {
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} u;
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} __packed action;
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} u;
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-} __packed;
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+} __packed __aligned(2);
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/* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
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#define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
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@@ -861,20 +861,20 @@ struct ieee80211_rts {
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__le16 duration;
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u8 ra[6];
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u8 ta[6];
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-} __packed;
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+} __packed __aligned(2);
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struct ieee80211_cts {
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__le16 frame_control;
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__le16 duration;
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u8 ra[6];
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-} __packed;
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+} __packed __aligned(2);
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struct ieee80211_pspoll {
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__le16 frame_control;
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__le16 aid;
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u8 bssid[6];
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u8 ta[6];
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-} __packed;
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+} __packed __aligned(2);
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/* TDLS */
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