[PATCH v2 3/4] ath10k: implement 802.3 SNAP rx decap type A-MSDU handling
From: Michal Kazior <hidden>
Date: 2013-08-13 05:59:45
Subsystem:
atheros ath generic utilities, qualcomm atheros ath10k wireless driver, the rest · Maintainers:
Jeff Johnson, Linus Torvalds
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 <redacted> --- v2: * use a comment instead of a no-op if clause drivers/net/wireless/ath/ath10k/htt_rx.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index e784c40..9bb0ae89 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c@@ -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. */
--
1.7.9.5