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path: root/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c66
1 files changed, 36 insertions, 30 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
index 8894027429d6..8ca0250de99e 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -86,9 +86,9 @@ void iwl_pcie_gen2_tx_stop(struct iwl_trans *trans)
/*
* iwl_pcie_txq_update_byte_tbl - Set up entry in Tx byte-count array
*/
-void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie,
- struct iwl_txq *txq, u16 byte_cnt,
- int num_tbs)
+static void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie,
+ struct iwl_txq *txq, u16 byte_cnt,
+ int num_tbs)
{
struct iwlagn_scd_bc_tbl *scd_bc_tbl = txq->bc_tbl.addr;
struct iwl_trans *trans = iwl_trans_pcie_get_trans(trans_pcie);
@@ -113,14 +113,14 @@ void iwl_pcie_gen2_update_byte_tbl(struct iwl_trans_pcie *trans_pcie,
*/
num_fetch_chunks = DIV_ROUND_UP(filled_tfd_size, 64) - 1;
- if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
- /* Starting from 22560, the HW expects bytes */
+ if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
+ /* Starting from AX210, the HW expects bytes */
WARN_ON(trans_pcie->bc_table_dword);
WARN_ON(len > 0x3FFF);
bc_ent = cpu_to_le16(len | (num_fetch_chunks << 14));
scd_bc_tbl_gen3->tfd_offset[idx] = bc_ent;
} else {
- /* Until 22560, the HW expects DW */
+ /* Before AX210, the HW expects DW */
WARN_ON(!trans_pcie->bc_table_dword);
len = DIV_ROUND_UP(len, 4);
WARN_ON(len > 0xFFF);
@@ -251,27 +251,23 @@ static int iwl_pcie_gen2_build_amsdu(struct iwl_trans *trans,
struct ieee80211_hdr *hdr = (void *)skb->data;
unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room;
unsigned int mss = skb_shinfo(skb)->gso_size;
- u16 length, iv_len, amsdu_pad;
+ u16 length, amsdu_pad;
u8 *start_hdr;
struct iwl_tso_hdr_page *hdr_page;
struct page **page_ptr;
struct tso_t tso;
- /* if the packet is protected, then it must be CCMP or GCMP */
- iv_len = ieee80211_has_protected(hdr->frame_control) ?
- IEEE80211_CCMP_HDR_LEN : 0;
-
trace_iwlwifi_dev_tx(trans->dev, skb, tfd, sizeof(*tfd),
&dev_cmd->hdr, start_len, 0);
ip_hdrlen = skb_transport_header(skb) - skb_network_header(skb);
snap_ip_tcp_hdrlen = 8 + ip_hdrlen + tcp_hdrlen(skb);
- total_len = skb->len - snap_ip_tcp_hdrlen - hdr_len - iv_len;
+ total_len = skb->len - snap_ip_tcp_hdrlen - hdr_len;
amsdu_pad = 0;
/* total amount of header we may need for this A-MSDU */
hdr_room = DIV_ROUND_UP(total_len, mss) *
- (3 + snap_ip_tcp_hdrlen + sizeof(struct ethhdr)) + iv_len;
+ (3 + snap_ip_tcp_hdrlen + sizeof(struct ethhdr));
/* Our device supports 9 segments at most, it will fit in 1 page */
hdr_page = get_page_hdr(trans, hdr_room);
@@ -282,14 +278,12 @@ static int iwl_pcie_gen2_build_amsdu(struct iwl_trans *trans,
start_hdr = hdr_page->pos;
page_ptr = (void *)((u8 *)skb->cb + trans_pcie->page_offs);
*page_ptr = hdr_page->page;
- memcpy(hdr_page->pos, skb->data + hdr_len, iv_len);
- hdr_page->pos += iv_len;
/*
- * Pull the ieee80211 header + IV to be able to use TSO core,
+ * Pull the ieee80211 header to be able to use TSO core,
* we will restore it for the tx_status flow.
*/
- skb_pull(skb, hdr_len + iv_len);
+ skb_pull(skb, hdr_len);
/*
* Remove the length of all the headers that we don't actually
@@ -339,7 +333,8 @@ static int iwl_pcie_gen2_build_amsdu(struct iwl_trans *trans,
goto out_err;
}
iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb_len);
- trace_iwlwifi_dev_tx_tb(trans->dev, skb, start_hdr, tb_len);
+ trace_iwlwifi_dev_tx_tb(trans->dev, skb, start_hdr,
+ tb_phys, tb_len);
/* add this subframe's headers' length to the tx_cmd */
le16_add_cpu(&tx_cmd->len, hdr_page->pos - subf_hdrs_start);
@@ -357,15 +352,15 @@ static int iwl_pcie_gen2_build_amsdu(struct iwl_trans *trans,
}
iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb_len);
trace_iwlwifi_dev_tx_tb(trans->dev, skb, tso.data,
- tb_len);
+ tb_phys, tb_len);
data_left -= tb_len;
tso_build_data(skb, &tso, tb_len);
}
}
- /* re -add the WiFi header and IV */
- skb_push(skb, hdr_len + iv_len);
+ /* re -add the WiFi header */
+ skb_push(skb, hdr_len);
return 0;
@@ -447,9 +442,8 @@ static int iwl_pcie_gen2_tx_add_frags(struct iwl_trans *trans,
return -ENOMEM;
tb_idx = iwl_pcie_gen2_set_tb(trans, tfd, tb_phys,
skb_frag_size(frag));
- trace_iwlwifi_dev_tx_tb(trans->dev, skb,
- skb_frag_address(frag),
- skb_frag_size(frag));
+ trace_iwlwifi_dev_tx_tb(trans->dev, skb, skb_frag_address(frag),
+ tb_phys, skb_frag_size(frag));
if (tb_idx < 0)
return tb_idx;
@@ -474,6 +468,7 @@ iwl_tfh_tfd *iwl_pcie_gen2_build_tx(struct iwl_trans *trans,
dma_addr_t tb_phys;
int len, tb1_len, tb2_len;
void *tb1_addr;
+ struct sk_buff *frag;
tb_phys = iwl_pcie_get_first_tb_dma(txq, idx);
@@ -514,14 +509,25 @@ iwl_tfh_tfd *iwl_pcie_gen2_build_tx(struct iwl_trans *trans,
if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
goto out_err;
iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, tb2_len);
- trace_iwlwifi_dev_tx_tb(trans->dev, skb,
- skb->data + hdr_len,
- tb2_len);
+ trace_iwlwifi_dev_tx_tb(trans->dev, skb, skb->data + hdr_len,
+ tb_phys, tb2_len);
}
if (iwl_pcie_gen2_tx_add_frags(trans, skb, tfd, out_meta))
goto out_err;
+ skb_walk_frags(skb, frag) {
+ tb_phys = dma_map_single(trans->dev, frag->data,
+ skb_headlen(frag), DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(trans->dev, tb_phys)))
+ goto out_err;
+ iwl_pcie_gen2_set_tb(trans, tfd, tb_phys, skb_headlen(frag));
+ trace_iwlwifi_dev_tx_tb(trans->dev, skb, frag->data,
+ tb_phys, skb_headlen(frag));
+ if (iwl_pcie_gen2_tx_add_frags(trans, frag, tfd, out_meta))
+ goto out_err;
+ }
+
return tfd;
out_err:
@@ -547,7 +553,7 @@ struct iwl_tfh_tfd *iwl_pcie_gen2_build_tfd(struct iwl_trans *trans,
memset(tfd, 0, sizeof(*tfd));
- if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_22560)
+ if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
len = sizeof(struct iwl_tx_cmd_gen2);
else
len = sizeof(struct iwl_tx_cmd_gen3);
@@ -629,7 +635,7 @@ int iwl_trans_pcie_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb,
return -1;
}
- if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
+ if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
struct iwl_tx_cmd_gen3 *tx_cmd_gen3 =
(void *)dev_cmd->payload;
@@ -1130,7 +1136,7 @@ int iwl_trans_pcie_dyn_txq_alloc_dma(struct iwl_trans *trans,
return -ENOMEM;
ret = iwl_pcie_alloc_dma_ptr(trans, &txq->bc_tbl,
(trans->trans_cfg->device_family >=
- IWL_DEVICE_FAMILY_22560) ?
+ IWL_DEVICE_FAMILY_AX210) ?
sizeof(struct iwl_gen3_bc_tbl) :
sizeof(struct iwlagn_scd_bc_tbl));
if (ret) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.