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[PATCH] orinoco: optimize Tx exception handling in orinoco 

When processing Tx exception, only read data until addr1.  Rename
hermes_tx_descriptor_802_11 to hermes_txexc_data since it's only used to
Tx exceptions.  Reuse existing hermes_tx_descriptor structure.  Remove
fields after addr1 - they are not read from the card.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin 2006-04-07 04:10:34 -04:00 committed by John W. Linville
parent 4ebe2eb0b3
commit 30c2d3b481
1 changed files with 6 additions and 36 deletions
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42
drivers/net/wireless/orinoco.c
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@ -201,41 +201,12 @@ static struct {
/* Data types */
/********************************************************************/
/* Used in Event handling.
* We avoid nested structures as they break on ARM -- Moustafa */
struct hermes_tx_descriptor_802_11 {
/* hermes_tx_descriptor */
__le16 status;
__le16 reserved1;
__le16 reserved2;
__le32 sw_support;
u8 retry_count;
u8 tx_rate;
__le16 tx_control;
/* ieee80211_hdr */
/* Beginning of the Tx descriptor, used in TxExc handling */
struct hermes_txexc_data {
struct hermes_tx_descriptor desc;
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
__le16 seq_ctl;
u8 addr4[ETH_ALEN];
__le16 data_len;
/* ethhdr */
u8 h_dest[ETH_ALEN]; /* destination eth addr */
u8 h_source[ETH_ALEN]; /* source ether addr */
__be16 h_proto; /* packet type ID field */
/* p8022_hdr */
u8 dsap;
u8 ssap;
u8 ctrl;
u8 oui[3];
__be16 ethertype;
} __attribute__ ((packed));
/* Rx frame header except compatibility 802.3 header */
@ -620,7 +591,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
struct net_device_stats *stats = &priv->stats;
u16 fid = hermes_read_regn(hw, TXCOMPLFID);
u16 status;
struct hermes_tx_descriptor_802_11 hdr;
struct hermes_txexc_data hdr;
int err = 0;
if (fid == DUMMY_FID)
@ -628,8 +599,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
/* Read part of the frame header - we need status and addr1 */
err = hermes_bap_pread(hw, IRQ_BAP, &hdr,
offsetof(struct hermes_tx_descriptor_802_11,
addr2),
sizeof(struct hermes_txexc_data),
fid, 0);
hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
@ -649,7 +619,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
* exceeded, because that's the only status that really mean
* that this particular node went away.
* Other errors means that *we* screwed up. - Jean II */
status = le16_to_cpu(hdr.status);
status = le16_to_cpu(hdr.desc.status);
if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
union iwreq_data wrqu;