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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-25 23:17:34 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-25 23:17:34 +0400 |
commit | 4ba9920e5e9c0e16b5ed24292d45322907bb9035 (patch) | |
tree | 7d023baea59ed0886ded1f0b6d1c6385690b88f7 /drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c | |
parent | 82c477669a4665eb4e52030792051e0559ee2a36 (diff) | |
parent | 8b662fe70c68282f78482dc272df0c4f355e49f5 (diff) | |
download | linux-4ba9920e5e9c0e16b5ed24292d45322907bb9035.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) BPF debugger and asm tool by Daniel Borkmann.
2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann.
3) Correct reciprocal_divide and update users, from Hannes Frederic
Sowa and Daniel Borkmann.
4) Currently we only have a "set" operation for the hw timestamp socket
ioctl, add a "get" operation to match. From Ben Hutchings.
5) Add better trace events for debugging driver datapath problems, also
from Ben Hutchings.
6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we
have a small send and a previous packet is already in the qdisc or
device queue, defer until TX completion or we get more data.
7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko.
8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel
Borkmann.
9) Share IP header compression code between Bluetooth and IEEE802154
layers, from Jukka Rissanen.
10) Fix ipv6 router reachability probing, from Jiri Benc.
11) Allow packets to be captured on macvtap devices, from Vlad Yasevich.
12) Support tunneling in GRO layer, from Jerry Chu.
13) Allow bonding to be configured fully using netlink, from Scott
Feldman.
14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can
already get the TCI. From Atzm Watanabe.
15) New "Heavy Hitter" qdisc, from Terry Lam.
16) Significantly improve the IPSEC support in pktgen, from Fan Du.
17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom
Herbert.
18) Add Proportional Integral Enhanced packet scheduler, from Vijay
Subramanian.
19) Allow openvswitch to mmap'd netlink, from Thomas Graf.
20) Key TCP metrics blobs also by source address, not just destination
address. From Christoph Paasch.
21) Support 10G in generic phylib. From Andy Fleming.
22) Try to short-circuit GRO flow compares using device provided RX
hash, if provided. From Tom Herbert.
The wireless and netfilter folks have been busy little bees too.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits)
net/cxgb4: Fix referencing freed adapter
ipv6: reallocate addrconf router for ipv6 address when lo device up
fib_frontend: fix possible NULL pointer dereference
rtnetlink: remove IFLA_BOND_SLAVE definition
rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info
qlcnic: update version to 5.3.55
qlcnic: Enhance logic to calculate msix vectors.
qlcnic: Refactor interrupt coalescing code for all adapters.
qlcnic: Update poll controller code path
qlcnic: Interrupt code cleanup
qlcnic: Enhance Tx timeout debugging.
qlcnic: Use bool for rx_mac_learn.
bonding: fix u64 division
rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC
sfc: Use the correct maximum TX DMA ring size for SFC9100
Add Shradha Shah as the sfc driver maintainer.
net/vxlan: Share RX skb de-marking and checksum checks with ovs
tulip: cleanup by using ARRAY_SIZE()
ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
net/cxgb4: Don't retrieve stats during recovery
...
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c')
-rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c deleted file mode 100644 index dd85401063cb..000000000000 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c +++ /dev/null @@ -1,392 +0,0 @@ -/* - * Copyright (c) 2010 Broadcom Corporation - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -/******************************************************************************* - * Communicates with the dongle by using dcmd codes. - * For certain dcmd codes, the dongle interprets string data from the host. - ******************************************************************************/ - -#include <linux/types.h> -#include <linux/netdevice.h> - -#include <brcmu_utils.h> -#include <brcmu_wifi.h> - -#include "dhd.h" -#include "dhd_proto.h" -#include "dhd_bus.h" -#include "fwsignal.h" -#include "dhd_dbg.h" -#include "tracepoint.h" - -struct brcmf_proto_cdc_dcmd { - __le32 cmd; /* dongle command value */ - __le32 len; /* lower 16: output buflen; - * upper 16: input buflen (excludes header) */ - __le32 flags; /* flag defns given below */ - __le32 status; /* status code returned from the device */ -}; - -/* Max valid buffer size that can be sent to the dongle */ -#define CDC_MAX_MSG_SIZE (ETH_FRAME_LEN+ETH_FCS_LEN) - -/* CDC flag definitions */ -#define CDC_DCMD_ERROR 0x01 /* 1=cmd failed */ -#define CDC_DCMD_SET 0x02 /* 0=get, 1=set cmd */ -#define CDC_DCMD_IF_MASK 0xF000 /* I/F index */ -#define CDC_DCMD_IF_SHIFT 12 -#define CDC_DCMD_ID_MASK 0xFFFF0000 /* id an cmd pairing */ -#define CDC_DCMD_ID_SHIFT 16 /* ID Mask shift bits */ -#define CDC_DCMD_ID(flags) \ - (((flags) & CDC_DCMD_ID_MASK) >> CDC_DCMD_ID_SHIFT) - -/* - * BDC header - Broadcom specific extension of CDC. - * Used on data packets to convey priority across USB. - */ -#define BDC_HEADER_LEN 4 -#define BDC_PROTO_VER 2 /* Protocol version */ -#define BDC_FLAG_VER_MASK 0xf0 /* Protocol version mask */ -#define BDC_FLAG_VER_SHIFT 4 /* Protocol version shift */ -#define BDC_FLAG_SUM_GOOD 0x04 /* Good RX checksums */ -#define BDC_FLAG_SUM_NEEDED 0x08 /* Dongle needs to do TX checksums */ -#define BDC_PRIORITY_MASK 0x7 -#define BDC_FLAG2_IF_MASK 0x0f /* packet rx interface in APSTA */ -#define BDC_FLAG2_IF_SHIFT 0 - -#define BDC_GET_IF_IDX(hdr) \ - ((int)((((hdr)->flags2) & BDC_FLAG2_IF_MASK) >> BDC_FLAG2_IF_SHIFT)) -#define BDC_SET_IF_IDX(hdr, idx) \ - ((hdr)->flags2 = (((hdr)->flags2 & ~BDC_FLAG2_IF_MASK) | \ - ((idx) << BDC_FLAG2_IF_SHIFT))) - -/** - * struct brcmf_proto_bdc_header - BDC header format - * - * @flags: flags contain protocol and checksum info. - * @priority: 802.1d priority and USB flow control info (bit 4:7). - * @flags2: additional flags containing dongle interface index. - * @data_offset: start of packet data. header is following by firmware signals. - */ -struct brcmf_proto_bdc_header { - u8 flags; - u8 priority; - u8 flags2; - u8 data_offset; -}; - -/* - * maximum length of firmware signal data between - * the BDC header and packet data in the tx path. - */ -#define BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES 12 - -#define RETRIES 2 /* # of retries to retrieve matching dcmd response */ -#define BUS_HEADER_LEN (16+64) /* Must be atleast SDPCM_RESERVE - * (amount of header tha might be added) - * plus any space that might be needed - * for bus alignment padding. - */ -#define ROUND_UP_MARGIN 2048 /* Biggest bus block size possible for - * round off at the end of buffer - * Currently is SDIO - */ - -struct brcmf_proto { - u16 reqid; - u8 bus_header[BUS_HEADER_LEN]; - struct brcmf_proto_cdc_dcmd msg; - unsigned char buf[BRCMF_DCMD_MAXLEN + ROUND_UP_MARGIN]; -}; - -static int brcmf_proto_cdc_msg(struct brcmf_pub *drvr) -{ - struct brcmf_proto *prot = drvr->prot; - int len = le32_to_cpu(prot->msg.len) + - sizeof(struct brcmf_proto_cdc_dcmd); - - brcmf_dbg(CDC, "Enter\n"); - - /* NOTE : cdc->msg.len holds the desired length of the buffer to be - * returned. Only up to CDC_MAX_MSG_SIZE of this buffer area - * is actually sent to the dongle - */ - if (len > CDC_MAX_MSG_SIZE) - len = CDC_MAX_MSG_SIZE; - - /* Send request */ - return brcmf_bus_txctl(drvr->bus_if, (unsigned char *)&prot->msg, len); -} - -static int brcmf_proto_cdc_cmplt(struct brcmf_pub *drvr, u32 id, u32 len) -{ - int ret; - struct brcmf_proto *prot = drvr->prot; - - brcmf_dbg(CDC, "Enter\n"); - len += sizeof(struct brcmf_proto_cdc_dcmd); - do { - ret = brcmf_bus_rxctl(drvr->bus_if, (unsigned char *)&prot->msg, - len); - if (ret < 0) - break; - } while (CDC_DCMD_ID(le32_to_cpu(prot->msg.flags)) != id); - - return ret; -} - -int -brcmf_proto_cdc_query_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd, - void *buf, uint len) -{ - struct brcmf_proto *prot = drvr->prot; - struct brcmf_proto_cdc_dcmd *msg = &prot->msg; - void *info; - int ret = 0, retries = 0; - u32 id, flags; - - brcmf_dbg(CDC, "Enter, cmd %d len %d\n", cmd, len); - - memset(msg, 0, sizeof(struct brcmf_proto_cdc_dcmd)); - - msg->cmd = cpu_to_le32(cmd); - msg->len = cpu_to_le32(len); - flags = (++prot->reqid << CDC_DCMD_ID_SHIFT); - flags = (flags & ~CDC_DCMD_IF_MASK) | - (ifidx << CDC_DCMD_IF_SHIFT); - msg->flags = cpu_to_le32(flags); - - if (buf) - memcpy(prot->buf, buf, len); - - ret = brcmf_proto_cdc_msg(drvr); - if (ret < 0) { - brcmf_err("brcmf_proto_cdc_msg failed w/status %d\n", - ret); - goto done; - } - -retry: - /* wait for interrupt and get first fragment */ - ret = brcmf_proto_cdc_cmplt(drvr, prot->reqid, len); - if (ret < 0) - goto done; - - flags = le32_to_cpu(msg->flags); - id = (flags & CDC_DCMD_ID_MASK) >> CDC_DCMD_ID_SHIFT; - - if ((id < prot->reqid) && (++retries < RETRIES)) - goto retry; - if (id != prot->reqid) { - brcmf_err("%s: unexpected request id %d (expected %d)\n", - brcmf_ifname(drvr, ifidx), id, prot->reqid); - ret = -EINVAL; - goto done; - } - - /* Check info buffer */ - info = (void *)&msg[1]; - - /* Copy info buffer */ - if (buf) { - if (ret < (int)len) - len = ret; - memcpy(buf, info, len); - } - - /* Check the ERROR flag */ - if (flags & CDC_DCMD_ERROR) - ret = le32_to_cpu(msg->status); - -done: - return ret; -} - -int brcmf_proto_cdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd, - void *buf, uint len) -{ - struct brcmf_proto *prot = drvr->prot; - struct brcmf_proto_cdc_dcmd *msg = &prot->msg; - int ret = 0; - u32 flags, id; - - brcmf_dbg(CDC, "Enter, cmd %d len %d\n", cmd, len); - - memset(msg, 0, sizeof(struct brcmf_proto_cdc_dcmd)); - - msg->cmd = cpu_to_le32(cmd); - msg->len = cpu_to_le32(len); - flags = (++prot->reqid << CDC_DCMD_ID_SHIFT) | CDC_DCMD_SET; - flags = (flags & ~CDC_DCMD_IF_MASK) | - (ifidx << CDC_DCMD_IF_SHIFT); - msg->flags = cpu_to_le32(flags); - - if (buf) - memcpy(prot->buf, buf, len); - - ret = brcmf_proto_cdc_msg(drvr); - if (ret < 0) - goto done; - - ret = brcmf_proto_cdc_cmplt(drvr, prot->reqid, len); - if (ret < 0) - goto done; - - flags = le32_to_cpu(msg->flags); - id = (flags & CDC_DCMD_ID_MASK) >> CDC_DCMD_ID_SHIFT; - - if (id != prot->reqid) { - brcmf_err("%s: unexpected request id %d (expected %d)\n", - brcmf_ifname(drvr, ifidx), id, prot->reqid); - ret = -EINVAL; - goto done; - } - - /* Check the ERROR flag */ - if (flags & CDC_DCMD_ERROR) - ret = le32_to_cpu(msg->status); - -done: - return ret; -} - -static bool pkt_sum_needed(struct sk_buff *skb) -{ - return skb->ip_summed == CHECKSUM_PARTIAL; -} - -static void pkt_set_sum_good(struct sk_buff *skb, bool x) -{ - skb->ip_summed = (x ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE); -} - -void brcmf_proto_hdrpush(struct brcmf_pub *drvr, int ifidx, u8 offset, - struct sk_buff *pktbuf) -{ - struct brcmf_proto_bdc_header *h; - - brcmf_dbg(CDC, "Enter\n"); - - /* Push BDC header used to convey priority for buses that don't */ - skb_push(pktbuf, BDC_HEADER_LEN); - - h = (struct brcmf_proto_bdc_header *)(pktbuf->data); - - h->flags = (BDC_PROTO_VER << BDC_FLAG_VER_SHIFT); - if (pkt_sum_needed(pktbuf)) - h->flags |= BDC_FLAG_SUM_NEEDED; - - h->priority = (pktbuf->priority & BDC_PRIORITY_MASK); - h->flags2 = 0; - h->data_offset = offset; - BDC_SET_IF_IDX(h, ifidx); - trace_brcmf_bdchdr(pktbuf->data); -} - -int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws, u8 *ifidx, - struct sk_buff *pktbuf) -{ - struct brcmf_proto_bdc_header *h; - - brcmf_dbg(CDC, "Enter\n"); - - /* Pop BDC header used to convey priority for buses that don't */ - - if (pktbuf->len <= BDC_HEADER_LEN) { - brcmf_dbg(INFO, "rx data too short (%d <= %d)\n", - pktbuf->len, BDC_HEADER_LEN); - return -EBADE; - } - - trace_brcmf_bdchdr(pktbuf->data); - h = (struct brcmf_proto_bdc_header *)(pktbuf->data); - - *ifidx = BDC_GET_IF_IDX(h); - if (*ifidx >= BRCMF_MAX_IFS) { - brcmf_err("rx data ifnum out of range (%d)\n", *ifidx); - return -EBADE; - } - /* The ifidx is the idx to map to matching netdev/ifp. When receiving - * events this is easy because it contains the bssidx which maps - * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd. - * bssidx 1 is used for p2p0 and no data can be received or - * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0 - */ - if (*ifidx) - (*ifidx)++; - - if (((h->flags & BDC_FLAG_VER_MASK) >> BDC_FLAG_VER_SHIFT) != - BDC_PROTO_VER) { - brcmf_err("%s: non-BDC packet received, flags 0x%x\n", - brcmf_ifname(drvr, *ifidx), h->flags); - return -EBADE; - } - - if (h->flags & BDC_FLAG_SUM_GOOD) { - brcmf_dbg(CDC, "%s: BDC rcv, good checksum, flags 0x%x\n", - brcmf_ifname(drvr, *ifidx), h->flags); - pkt_set_sum_good(pktbuf, true); - } - - pktbuf->priority = h->priority & BDC_PRIORITY_MASK; - - skb_pull(pktbuf, BDC_HEADER_LEN); - if (do_fws) - brcmf_fws_hdrpull(drvr, *ifidx, h->data_offset << 2, pktbuf); - else - skb_pull(pktbuf, h->data_offset << 2); - - if (pktbuf->len == 0) - return -ENODATA; - return 0; -} - -int brcmf_proto_attach(struct brcmf_pub *drvr) -{ - struct brcmf_proto *cdc; - - cdc = kzalloc(sizeof(struct brcmf_proto), GFP_ATOMIC); - if (!cdc) - goto fail; - - /* ensure that the msg buf directly follows the cdc msg struct */ - if ((unsigned long)(&cdc->msg + 1) != (unsigned long)cdc->buf) { - brcmf_err("struct brcmf_proto is not correctly defined\n"); - goto fail; - } - - drvr->prot = cdc; - drvr->hdrlen += BDC_HEADER_LEN + BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES; - drvr->bus_if->maxctl = BRCMF_DCMD_MAXLEN + - sizeof(struct brcmf_proto_cdc_dcmd) + ROUND_UP_MARGIN; - return 0; - -fail: - kfree(cdc); - return -ENOMEM; -} - -/* ~NOTE~ What if another thread is waiting on the semaphore? Holding it? */ -void brcmf_proto_detach(struct brcmf_pub *drvr) -{ - kfree(drvr->prot); - drvr->prot = NULL; -} - -void brcmf_proto_stop(struct brcmf_pub *drvr) -{ - /* Nothing to do for CDC */ -} |