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authorKalle Valo <kvalo@codeaurora.org>2015-11-17 21:14:51 +0200
committerKalle Valo <kvalo@codeaurora.org>2015-11-18 14:28:30 +0200
commit277b024e5e3d4af4c219c0b9bd541ca4398e0b69 (patch)
tree55a9a1f68cc9361620acd3f51a454c98a4fc6c95 /drivers/net/wireless/mwifiex/sta_rx.c
parentlibertas_tf: move under marvell vendor directory (diff)
downloadlinux-dev-277b024e5e3d4af4c219c0b9bd541ca4398e0b69.tar.xz
linux-dev-277b024e5e3d4af4c219c0b9bd541ca4398e0b69.zip
mwifiex: move under marvell vendor directory
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mwifiex/sta_rx.c')
-rw-r--r--drivers/net/wireless/mwifiex/sta_rx.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/drivers/net/wireless/mwifiex/sta_rx.c b/drivers/net/wireless/mwifiex/sta_rx.c
deleted file mode 100644
index d4d4cb1ce95b..000000000000
--- a/drivers/net/wireless/mwifiex/sta_rx.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Marvell Wireless LAN device driver: station RX data handling
- *
- * Copyright (C) 2011-2014, Marvell International Ltd.
- *
- * This software file (the "File") is distributed by Marvell International
- * Ltd. under the terms of the GNU General Public License Version 2, June 1991
- * (the "License"). You may use, redistribute and/or modify this File in
- * accordance with the terms and conditions of the License, a copy of which
- * is available by writing to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
- * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
- *
- * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
- * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
- * this warranty disclaimer.
- */
-
-#include <uapi/linux/ipv6.h>
-#include <net/ndisc.h>
-#include "decl.h"
-#include "ioctl.h"
-#include "util.h"
-#include "fw.h"
-#include "main.h"
-#include "11n_aggr.h"
-#include "11n_rxreorder.h"
-
-/* This function checks if a frame is IPv4 ARP or IPv6 Neighbour advertisement
- * frame. If frame has both source and destination mac address as same, this
- * function drops such gratuitous frames.
- */
-static bool
-mwifiex_discard_gratuitous_arp(struct mwifiex_private *priv,
- struct sk_buff *skb)
-{
- const struct mwifiex_arp_eth_header *arp;
- struct ethhdr *eth;
- struct ipv6hdr *ipv6;
- struct icmp6hdr *icmpv6;
-
- eth = (struct ethhdr *)skb->data;
- switch (ntohs(eth->h_proto)) {
- case ETH_P_ARP:
- arp = (void *)(skb->data + sizeof(struct ethhdr));
- if (arp->hdr.ar_op == htons(ARPOP_REPLY) ||
- arp->hdr.ar_op == htons(ARPOP_REQUEST)) {
- if (!memcmp(arp->ar_sip, arp->ar_tip, 4))
- return true;
- }
- break;
- case ETH_P_IPV6:
- ipv6 = (void *)(skb->data + sizeof(struct ethhdr));
- icmpv6 = (void *)(skb->data + sizeof(struct ethhdr) +
- sizeof(struct ipv6hdr));
- if (NDISC_NEIGHBOUR_ADVERTISEMENT == icmpv6->icmp6_type) {
- if (!memcmp(&ipv6->saddr, &ipv6->daddr,
- sizeof(struct in6_addr)))
- return true;
- }
- break;
- default:
- break;
- }
-
- return false;
-}
-
-/*
- * This function processes the received packet and forwards it
- * to kernel/upper layer.
- *
- * This function parses through the received packet and determines
- * if it is a debug packet or normal packet.
- *
- * For non-debug packets, the function chops off unnecessary leading
- * header bytes, reconstructs the packet as an ethernet frame or
- * 802.2/llc/snap frame as required, and sends it to kernel/upper layer.
- *
- * The completion callback is called after processing in complete.
- */
-int mwifiex_process_rx_packet(struct mwifiex_private *priv,
- struct sk_buff *skb)
-{
- int ret;
- struct rx_packet_hdr *rx_pkt_hdr;
- struct rxpd *local_rx_pd;
- int hdr_chop;
- struct ethhdr *eth;
- u16 rx_pkt_off, rx_pkt_len;
- u8 *offset;
- u8 adj_rx_rate = 0;
-
- local_rx_pd = (struct rxpd *) (skb->data);
-
- rx_pkt_off = le16_to_cpu(local_rx_pd->rx_pkt_offset);
- rx_pkt_len = le16_to_cpu(local_rx_pd->rx_pkt_length);
- rx_pkt_hdr = (void *)local_rx_pd + rx_pkt_off;
-
- if ((!memcmp(&rx_pkt_hdr->rfc1042_hdr, bridge_tunnel_header,
- sizeof(bridge_tunnel_header))) ||
- (!memcmp(&rx_pkt_hdr->rfc1042_hdr, rfc1042_header,
- sizeof(rfc1042_header)) &&
- ntohs(rx_pkt_hdr->rfc1042_hdr.snap_type) != ETH_P_AARP &&
- ntohs(rx_pkt_hdr->rfc1042_hdr.snap_type) != ETH_P_IPX)) {
- /*
- * Replace the 803 header and rfc1042 header (llc/snap) with an
- * EthernetII header, keep the src/dst and snap_type
- * (ethertype).
- * The firmware only passes up SNAP frames converting
- * all RX Data from 802.11 to 802.2/LLC/SNAP frames.
- * To create the Ethernet II, just move the src, dst address
- * right before the snap_type.
- */
- eth = (struct ethhdr *)
- ((u8 *) &rx_pkt_hdr->eth803_hdr
- + sizeof(rx_pkt_hdr->eth803_hdr) +
- sizeof(rx_pkt_hdr->rfc1042_hdr)
- - sizeof(rx_pkt_hdr->eth803_hdr.h_dest)
- - sizeof(rx_pkt_hdr->eth803_hdr.h_source)
- - sizeof(rx_pkt_hdr->rfc1042_hdr.snap_type));
-
- memcpy(eth->h_source, rx_pkt_hdr->eth803_hdr.h_source,
- sizeof(eth->h_source));
- memcpy(eth->h_dest, rx_pkt_hdr->eth803_hdr.h_dest,
- sizeof(eth->h_dest));
-
- /* Chop off the rxpd + the excess memory from the 802.2/llc/snap
- header that was removed. */
- hdr_chop = (u8 *) eth - (u8 *) local_rx_pd;
- } else {
- /* Chop off the rxpd */
- hdr_chop = (u8 *) &rx_pkt_hdr->eth803_hdr -
- (u8 *) local_rx_pd;
- }
-
- /* Chop off the leading header bytes so the it points to the start of
- either the reconstructed EthII frame or the 802.2/llc/snap frame */
- skb_pull(skb, hdr_chop);
-
- if (priv->hs2_enabled &&
- mwifiex_discard_gratuitous_arp(priv, skb)) {
- mwifiex_dbg(priv->adapter, INFO, "Bypassed Gratuitous ARP\n");
- dev_kfree_skb_any(skb);
- return 0;
- }
-
- if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
- ntohs(rx_pkt_hdr->eth803_hdr.h_proto) == ETH_P_TDLS) {
- offset = (u8 *)local_rx_pd + rx_pkt_off;
- mwifiex_process_tdls_action_frame(priv, offset, rx_pkt_len);
- }
-
- priv->rxpd_rate = local_rx_pd->rx_rate;
-
- priv->rxpd_htinfo = local_rx_pd->ht_info;
-
- if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
- GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
- adj_rx_rate = mwifiex_adjust_data_rate(priv, priv->rxpd_rate,
- priv->rxpd_htinfo);
- mwifiex_hist_data_add(priv, adj_rx_rate, local_rx_pd->snr,
- local_rx_pd->nf);
- }
-
- ret = mwifiex_recv_packet(priv, skb);
- if (ret == -1)
- mwifiex_dbg(priv->adapter, ERROR,
- "recv packet failed\n");
-
- return ret;
-}
-
-/*
- * This function processes the received buffer.
- *
- * The function looks into the RxPD and performs sanity tests on the
- * received buffer to ensure its a valid packet, before processing it
- * further. If the packet is determined to be aggregated, it is
- * de-aggregated accordingly. Non-unicast packets are sent directly to
- * the kernel/upper layers. Unicast packets are handed over to the
- * Rx reordering routine if 11n is enabled.
- *
- * The completion callback is called after processing in complete.
- */
-int mwifiex_process_sta_rx_packet(struct mwifiex_private *priv,
- struct sk_buff *skb)
-{
- struct mwifiex_adapter *adapter = priv->adapter;
- int ret = 0;
- struct rxpd *local_rx_pd;
- struct rx_packet_hdr *rx_pkt_hdr;
- u8 ta[ETH_ALEN];
- u16 rx_pkt_type, rx_pkt_offset, rx_pkt_length, seq_num;
- struct mwifiex_sta_node *sta_ptr;
-
- local_rx_pd = (struct rxpd *) (skb->data);
- rx_pkt_type = le16_to_cpu(local_rx_pd->rx_pkt_type);
- rx_pkt_offset = le16_to_cpu(local_rx_pd->rx_pkt_offset);
- rx_pkt_length = le16_to_cpu(local_rx_pd->rx_pkt_length);
- seq_num = le16_to_cpu(local_rx_pd->seq_num);
-
- rx_pkt_hdr = (void *)local_rx_pd + rx_pkt_offset;
-
- if ((rx_pkt_offset + rx_pkt_length) > (u16) skb->len) {
- mwifiex_dbg(adapter, ERROR,
- "wrong rx packet: len=%d, rx_pkt_offset=%d, rx_pkt_length=%d\n",
- skb->len, rx_pkt_offset, rx_pkt_length);
- priv->stats.rx_dropped++;
- dev_kfree_skb_any(skb);
- return ret;
- }
-
- if (rx_pkt_type == PKT_TYPE_MGMT) {
- ret = mwifiex_process_mgmt_packet(priv, skb);
- if (ret)
- mwifiex_dbg(adapter, ERROR, "Rx of mgmt packet failed");
- dev_kfree_skb_any(skb);
- return ret;
- }
-
- /*
- * If the packet is not an unicast packet then send the packet
- * directly to os. Don't pass thru rx reordering
- */
- if ((!IS_11N_ENABLED(priv) &&
- !(ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
- !(local_rx_pd->flags & MWIFIEX_RXPD_FLAGS_TDLS_PACKET))) ||
- !ether_addr_equal_unaligned(priv->curr_addr, rx_pkt_hdr->eth803_hdr.h_dest)) {
- mwifiex_process_rx_packet(priv, skb);
- return ret;
- }
-
- if (mwifiex_queuing_ra_based(priv) ||
- (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
- local_rx_pd->flags & MWIFIEX_RXPD_FLAGS_TDLS_PACKET)) {
- memcpy(ta, rx_pkt_hdr->eth803_hdr.h_source, ETH_ALEN);
- if (local_rx_pd->flags & MWIFIEX_RXPD_FLAGS_TDLS_PACKET &&
- local_rx_pd->priority < MAX_NUM_TID) {
- sta_ptr = mwifiex_get_sta_entry(priv, ta);
- if (sta_ptr)
- sta_ptr->rx_seq[local_rx_pd->priority] =
- le16_to_cpu(local_rx_pd->seq_num);
- mwifiex_auto_tdls_update_peer_signal(priv, ta,
- local_rx_pd->snr,
- local_rx_pd->nf);
- }
- } else {
- if (rx_pkt_type != PKT_TYPE_BAR)
- priv->rx_seq[local_rx_pd->priority] = seq_num;
- memcpy(ta, priv->curr_bss_params.bss_descriptor.mac_address,
- ETH_ALEN);
- }
-
- /* Reorder and send to OS */
- ret = mwifiex_11n_rx_reorder_pkt(priv, seq_num, local_rx_pd->priority,
- ta, (u8) rx_pkt_type, skb);
-
- if (ret || (rx_pkt_type == PKT_TYPE_BAR))
- dev_kfree_skb_any(skb);
-
- if (ret)
- priv->stats.rx_dropped++;
-
- return ret;
-}