diff options
author | Pavel Roskin <proski@gnu.org> | 2006-04-07 04:10:45 -0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2006-04-24 16:15:51 -0400 |
commit | a28dc81dcd9ca9a451bfcab0a2351b0b07146759 (patch) | |
tree | 6f9e4b754807e3c81c99879dabd13a422a785327 /drivers/net | |
parent | 470e2aa6dbdd2c7eb6562ae365a17a627f7070e8 (diff) |
[PATCH] orinoco: simplify 802.3 encapsulation code
Use skb_pull() to strip the addresses from the original packet. Don't
strip protocol bytes.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/wireless/orinoco.c | 44 | ||||
-rw-r--r-- | drivers/net/wireless/orinoco.h | 14 |
2 files changed, 20 insertions, 38 deletions
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c index e7d06b90afe..4d6373814b9 100644 --- a/drivers/net/wireless/orinoco.c +++ b/drivers/net/wireless/orinoco.c @@ -421,9 +421,8 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) hermes_t *hw = &priv->hw; int err = 0; u16 txfid = priv->txfid; - char *p; struct ethhdr *eh; - int data_len, data_off; + int data_off; struct hermes_tx_descriptor desc; unsigned long flags; @@ -453,8 +452,7 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) } /* Check packet length */ - data_len = skb->len; - if (data_len < ETH_HLEN) + if (skb->len < ETH_HLEN) goto drop; eh = (struct ethhdr *)skb->data; @@ -477,22 +475,22 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) /* Encapsulate Ethernet-II frames */ if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ - struct header_struct hdr; - data_len = skb->len - ETH_HLEN; - data_off = HERMES_802_3_OFFSET + sizeof(hdr); - p = skb->data + ETH_HLEN; - - /* 802.3 header */ - memcpy(hdr.dest, eh->h_dest, ETH_ALEN); - memcpy(hdr.src, eh->h_source, ETH_ALEN); - hdr.len = htons(data_len + ENCAPS_OVERHEAD); - - /* 802.2 header */ - memcpy(&hdr.dsap, &encaps_hdr, sizeof(encaps_hdr)); - - hdr.ethertype = eh->h_proto; - err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr), - txfid, HERMES_802_3_OFFSET); + struct header_struct { + struct ethhdr eth; /* 802.3 header */ + u8 encap[6]; /* 802.2 header */ + } __attribute__ ((packed)) hdr; + + /* Strip destination and source from the data */ + skb_pull(skb, 2 * ETH_ALEN); + data_off = HERMES_802_2_OFFSET + sizeof(encaps_hdr); + + /* And move them to a separate header */ + memcpy(&hdr.eth, eh, 2 * ETH_ALEN); + hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len); + memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); + + err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr), + txfid, HERMES_802_3_OFFSET); if (err) { if (net_ratelimit()) printk(KERN_ERR "%s: Error %d writing packet " @@ -500,12 +498,10 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) goto busy; } } else { /* IEEE 802.3 frame */ - data_len = skb->len; data_off = HERMES_802_3_OFFSET; - p = skb->data; } - err = hermes_bap_pwrite(hw, USER_BAP, p, data_len, + err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len, txfid, data_off); if (err) { printk(KERN_ERR "%s: Error %d writing packet to BAP\n", @@ -527,7 +523,7 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) } dev->trans_start = jiffies; - stats->tx_bytes += data_off + data_len; + stats->tx_bytes += data_off + skb->len; goto ok; drop: diff --git a/drivers/net/wireless/orinoco.h b/drivers/net/wireless/orinoco.h index c6922a705e3..ca01e459a2f 100644 --- a/drivers/net/wireless/orinoco.h +++ b/drivers/net/wireless/orinoco.h @@ -30,20 +30,6 @@ struct orinoco_key { char data[ORINOCO_MAX_KEY_SIZE]; } __attribute__ ((packed)); -struct header_struct { - /* 802.3 */ - u8 dest[ETH_ALEN]; - u8 src[ETH_ALEN]; - __be16 len; - /* 802.2 */ - u8 dsap; - u8 ssap; - u8 ctrl; - /* SNAP */ - u8 oui[3]; - unsigned short ethertype; -} __attribute__ ((packed)); - typedef enum { FIRMWARE_TYPE_AGERE, FIRMWARE_TYPE_INTERSIL, |