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ath10k: implement 802.3 SNAP rx decap type A-MSDU handling 

This enables driver to rx another decapped a-msdu
frames. It should possibly help with throughputs
in some cases and reduce (or eliminate) number of
messages like this:

  ath10k: error processing msdus -524

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2013-08-13 07:59:37 +02:00 committed by Kalle Valo
parent 0e1cbf9a6f
commit dfa95b5024
1 changed files with 10 additions and 2 deletions
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12
drivers/net/wireless/ath/ath10k/htt_rx.c
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@ -610,8 +610,7 @@ static int ath10k_htt_rx_amsdu(struct ath10k_htt *htt,
RX_MPDU_START_INFO0_ENCRYPT_TYPE);
/* FIXME: No idea what assumptions are safe here. Need logs */
if ((fmt == RX_MSDU_DECAP_RAW && skb->next) ||
(fmt == RX_MSDU_DECAP_8023_SNAP_LLC)) {
if ((fmt == RX_MSDU_DECAP_RAW && skb->next)) {
ath10k_htt_rx_free_msdu_chain(skb->next);
skb->next = NULL;
return -ENOTSUPP;
@ -659,6 +658,15 @@ static int ath10k_htt_rx_amsdu(struct ath10k_htt *htt,
decap_hdr += roundup(crypto_len, 4);
}
/* When fmt == RX_MSDU_DECAP_8023_SNAP_LLC:
*
* SNAP 802.3 consists of:
* [dst:6][src:6][len:2][dsap:1][ssap:1][ctl:1][snap:5]
* [data][fcs:4].
*
* Since this overlaps with A-MSDU header (da, sa, len)
* there's nothing extra to do. */
if (fmt == RX_MSDU_DECAP_ETHERNET2_DIX) {
/* Ethernet2 decap inserts ethernet header in place of
* A-MSDU subframe header. */