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| author | Gertjan van Wingerde <gwingerde@gmail.com> | 2009-12-04 23:47:01 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-12-22 00:56:30 +0100 |
| commit | 77e73d1849c860d22ebba8826ad162ccfda4c535 (patch) | |
| tree | a4e238c8dd4f2e1c813619f092eca1668b947815 /drivers/net/wireless/rt2x00/rt2x00queue.c | |
| parent | rt2x00 : trim the skb after having the l2pad removed. (diff) | |
| download | linux-77e73d1849c860d22ebba8826ad162ccfda4c535.tar.xz linux-77e73d1849c860d22ebba8826ad162ccfda4c535.zip | |
rt2x00: Further L2 padding fixes.
Fix a couple of more bugs in the L2 padding code:
1. Compute the amount of L2 padding correctly (in 3 places).
2. Trim the skb correctly when the L2 padding has been applied.
Also introduce a central macro the compute the L2 padding size.
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index b8f09547787d..21d58769a1a7 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -181,7 +181,7 @@ void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length) unsigned int frame_length = skb->len; unsigned int header_align = ALIGN_SIZE(skb, 0); unsigned int payload_align = ALIGN_SIZE(skb, header_length); - unsigned int l2pad = 4 - (payload_align - header_align); + unsigned int l2pad = L2PAD_SIZE(header_length); if (header_align == payload_align) { /* @@ -216,6 +216,7 @@ void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length) memmove(skb->data + header_length + l2pad, skb->data + header_length + l2pad + payload_align, frame_length - header_length); + skb_trim(skb, frame_length + l2pad); skbdesc->flags |= SKBDESC_L2_PADDED; } } @@ -223,7 +224,7 @@ void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length) void rt2x00queue_remove_l2pad(struct sk_buff *skb, unsigned int header_length) { struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); - unsigned int l2pad = 4 - (header_length & 3); + unsigned int l2pad = L2PAD_SIZE(header_length); if (!l2pad || (skbdesc->flags & SKBDESC_L2_PADDED)) return; @@ -346,7 +347,8 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, * Header and alignment information. */ txdesc->header_length = ieee80211_get_hdrlen_from_skb(entry->skb); - txdesc->l2pad = ALIGN_SIZE(entry->skb, txdesc->header_length); + if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags)) + txdesc->l2pad = L2PAD_SIZE(txdesc->header_length); /* * Check whether this frame is to be acked. |