Return error when rx_amsdu_pop() will fail.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/htt_rx.c | 50 ++++++++++++++++--------------
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 1af1021..8bccba5 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -297,6 +297,7 @@ static void ath10k_htt_rx_free_msdu_chain(struct sk_buff *skb)
}
}
+/* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
u8 **fw_desc, int *fw_desc_len,
struct sk_buff **head_msdu,
@@ -310,7 +311,7 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
if (htt->rx_confused) {
ath10k_warn("htt is confused. refusing rx\n");
- return 0;
+ return -1;
}
msdu = *head_msdu = ath10k_htt_rx_netbuf_pop(htt);
@@ -442,6 +443,9 @@ static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
}
*tail_msdu = msdu;
+ if (*head_msdu == NULL)
+ msdu_chaining = -1;
+
/*
* Don't refill the ring yet.
*
@@ -1133,11 +1137,6 @@ static bool ath10k_htt_rx_amsdu_allowed(struct ath10k_htt *htt,
enum htt_rx_mpdu_status status,
bool channel_set)
{
- if (!head) {
- ath10k_warn("htt rx no data!\n");
- return false;
- }
-
if (head->len == 0) {
ath10k_dbg(ATH10K_DBG_HTT,
"htt rx dropping due to zero-len\n");
@@ -1193,6 +1192,7 @@ static void ath10k_htt_rx_handler(struct ath10k_htt *htt,
u8 *fw_desc;
bool channel_set, fcs_err, mic_err;
int i, j;
+ int ret;
lockdep_assert_held(&htt->rx_ring.lock);
@@ -1236,15 +1236,21 @@ static void ath10k_htt_rx_handler(struct ath10k_htt *htt,
for (j = 0; j < mpdu_ranges[i].mpdu_count; j++) {
struct sk_buff *msdu_head, *msdu_tail;
- int msdu_chaining;
msdu_head = NULL;
msdu_tail = NULL;
- msdu_chaining = ath10k_htt_rx_amsdu_pop(htt,
- &fw_desc,
- &fw_desc_len,
- &msdu_head,
- &msdu_tail);
+ ret = ath10k_htt_rx_amsdu_pop(htt,
+ &fw_desc,
+ &fw_desc_len,
+ &msdu_head,
+ &msdu_tail);
+
+ if (ret < 0) {
+ ath10k_warn("failed to pop amsdu from htt rx ring %d\n",
+ ret);
+ ath10k_htt_rx_free_msdu_chain(msdu_head);
+ continue;
+ }
if (!ath10k_htt_rx_amsdu_allowed(htt, msdu_head,
status,
@@ -1253,8 +1259,8 @@ static void ath10k_htt_rx_handler(struct ath10k_htt *htt,
continue;
}
- if (msdu_chaining &&
- (ath10k_unchain_msdu(msdu_head) < 0)) {
+ if (ret > 0 &&
+ ath10k_unchain_msdu(msdu_head) < 0) {
ath10k_htt_rx_free_msdu_chain(msdu_head);
continue;
}
@@ -1306,7 +1312,7 @@ static void ath10k_htt_rx_frag_handler(struct ath10k_htt *htt,
enum rx_msdu_decap_format fmt;
struct htt_rx_info info = {};
struct ieee80211_hdr *hdr;
- int msdu_chaining;
+ int ret;
bool tkip_mic_err;
bool decrypt_err;
u8 *fw_desc;
@@ -1320,19 +1326,15 @@ static void ath10k_htt_rx_frag_handler(struct ath10k_htt *htt,
msdu_tail = NULL;
spin_lock_bh(&htt->rx_ring.lock);
- msdu_chaining = ath10k_htt_rx_amsdu_pop(htt, &fw_desc, &fw_desc_len,
- &msdu_head, &msdu_tail);
+ ret = ath10k_htt_rx_amsdu_pop(htt, &fw_desc, &fw_desc_len,
+ &msdu_head, &msdu_tail);
spin_unlock_bh(&htt->rx_ring.lock);
ath10k_dbg(ATH10K_DBG_HTT_DUMP, "htt rx frag ahead\n");
- if (!msdu_head) {
- ath10k_warn("htt rx frag no data\n");
- return;
- }
-
- if (msdu_chaining || msdu_head != msdu_tail) {
- ath10k_warn("aggregation with fragmentation?!\n");
+ if (ret) {
+ ath10k_warn("failed to pop amsdu from httr rx ring for fragmented rx %d\n",
+ ret);
ath10k_htt_rx_free_msdu_chain(msdu_head);
return;
}
--
1.7.9.5
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