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rndis: support iob offload

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Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2023-02-14 17:16:46 +08:00 committed by Xiang Xiao
parent 51c30289ae
commit 16ea80e53b
7 changed files with 146 additions and 38 deletions
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1
boards/arm/cxd56xx/spresense/configs/rndis/defconfig
View File

@ -97,6 +97,7 @@ CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1514
CONFIG_NET_ICMP=y
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_PKT=y
CONFIG_NET_ROUTE=y

1
boards/arm/cxd56xx/spresense/configs/rndis_smp/defconfig
View File

@ -97,6 +97,7 @@ CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1514
CONFIG_NET_ICMP=y
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_PKT=y
CONFIG_NET_ROUTE=y

1
boards/arm/kinetis/freedom-k28f/configs/nshsdusb/defconfig
View File

@ -52,6 +52,7 @@ CONFIG_NETUTILS_TELNETD=y
CONFIG_NET_ARP_SEND=y
CONFIG_NET_BROADCAST=y
CONFIG_NET_ICMP=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_SOCKOPTS=y
CONFIG_NET_STATISTICS=y

1
boards/arm/lc823450/lc823450-xgevk/configs/krndis/defconfig
View File

@ -100,6 +100,7 @@ CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1500
CONFIG_NET_ICMP=y
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_PKT=y
CONFIG_NET_ROUTE=y

1
boards/arm/lc823450/lc823450-xgevk/configs/rndis/defconfig
View File

@ -97,6 +97,7 @@ CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1514
CONFIG_NET_ICMP=y
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_PKT=y
CONFIG_NET_ROUTE=y

1
boards/arm/stm32/stm32f4discovery/configs/rndis/defconfig
View File

@ -53,6 +53,7 @@ CONFIG_NET_ARP_SEND=y
CONFIG_NET_BROADCAST=y
CONFIG_NET_ICMP=y
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_LL_GUARDSIZE=50
CONFIG_NET_LOOPBACK=y
CONFIG_NET_STATISTICS=y
CONFIG_NET_TCP=y

160
drivers/usbdev/rndis.c
View File

@ -70,6 +70,14 @@
(CONFIG_NET_ETH_PKTSIZE + CONFIG_NET_GUARDSIZE + RNDIS_PACKET_HDR_SIZE)
#define CONFIG_RNDIS_BULKOUT_REQLEN CONFIG_RNDIS_BULKIN_REQLEN
static_assert(CONFIG_NET_LL_GUARDSIZE >= RNDIS_PACKET_HDR_SIZE + ETH_HDRLEN,
"CONFIG_NET_LL_GUARDSIZE cannot be less than ETH_HDRLEN"
" + RNDIS_PACKET_HDR_SIZE");
static_assert((CONFIG_NET_LL_GUARDSIZE % 4) == 2,
"CONFIG_NET_LL_GUARDSIZE - ETH_HDRLEN "
"should be aligned to 4 bytes");
#define RNDIS_NCONFIGS (1)
#define RNDIS_CONFIGID (1)
#define RNDIS_CONFIGIDNONE (0)
@ -108,6 +116,8 @@ struct rndis_req_s
{
FAR struct rndis_req_s *flink; /* Implements a singly linked list */
FAR struct usbdev_req_s *req; /* The contained request */
FAR struct iob_s *iob; /* IOB offload */
FAR uint8_t *buf; /* Use malloc buffer when config IOB_LEN < CONFIG_RNDIS_BULKIN_REQLEN */
};
/* This structure describes the internal state of the driver */
@ -632,6 +642,14 @@ static void rndis_freewrreq(FAR struct rndis_dev_s *priv,
FAR struct rndis_req_s *req)
{
DEBUGASSERT(req != NULL);
if (req->iob)
{
/* In ep submit case, need release iob chain when write complete */
iob_free_chain(req->iob);
req->iob = NULL;
}
sq_addlast((FAR sq_entry_t *)req, &priv->reqlist);
rndis_submit_rdreq(priv);
}
@ -665,11 +683,6 @@ static bool rndis_allocnetreq(FAR struct rndis_dev_s *priv)
}
priv->net_req = rndis_allocwrreq(priv);
if (priv->net_req)
{
priv->netdev.d_buf = &priv->net_req->req->buf[RNDIS_PACKET_HDR_SIZE];
priv->netdev.d_len = CONFIG_NET_ETH_PKTSIZE;
}
leave_critical_section(flags);
return priv->net_req != NULL;
@ -699,8 +712,6 @@ static void rndis_sendnetreq(FAR struct rndis_dev_s *priv)
EP_SUBMIT(priv->epbulkin, priv->net_req->req);
priv->net_req = NULL;
priv->netdev.d_buf = NULL;
priv->netdev.d_len = 0;
leave_critical_section(flags);
}
@ -724,11 +735,55 @@ static void rndis_freenetreq(FAR struct rndis_dev_s *priv)
rndis_freewrreq(priv, priv->net_req);
priv->net_req = NULL;
priv->netdev.d_buf = NULL;
priv->netdev.d_len = 0;
leave_critical_section(flags);
}
/****************************************************************************
* Name: rndis_iob2buf
*
* Description:
* Map the appropriate location of req iob to buf.
*
* Input Parameters:
* priv: pointer to RNDIS device driver structure
* req: the request whose buffer we should fill
* Assumptions:
* Caller holds the network lock
*
****************************************************************************/
static void rndis_iob2buf(FAR struct rndis_dev_s *priv,
FAR struct rndis_req_s *req)
{
uint16_t llhdrlen = NET_LL_HDRLEN(&priv->netdev);
uint32_t offset = CONFIG_NET_LL_GUARDSIZE - llhdrlen -
RNDIS_PACKET_HDR_SIZE;
/* ----------------------------------------------------------------
* |<--- CONFIG_NET_LL_GUARDSIZE ---->|<-- io_len/io_pktlen(0) -->|
* ---------------------------------------------------------------|
* |unused | rndis hdr size |llhdrlen |<-- io_len/io_pktlen(0) -->|
* ---------------------------------------------------------------|
* |unused | req->buf(0) |
* ---------------------------------------------------------------|
*/
if (req->iob->io_flink == NULL)
{
req->req->buf = &req->iob->io_data[offset];
req->req->len = CONFIG_RNDIS_BULKIN_REQLEN;
}
else
{
req->req->buf = req->buf;
iob_copyout(&req->req->buf[RNDIS_PACKET_HDR_SIZE], req->iob,
req->iob->io_pktlen + llhdrlen, -llhdrlen);
iob_free_chain(req->iob);
req->iob = NULL;
}
}
/****************************************************************************
* Name: rndis_allocrxreq
*
@ -748,13 +803,33 @@ static void rndis_freenetreq(FAR struct rndis_dev_s *priv)
static bool rndis_allocrxreq(FAR struct rndis_dev_s *priv)
{
FAR struct iob_s *iob;
if (priv->rx_req != NULL)
{
return true;
}
priv->rx_req = rndis_allocwrreq(priv);
return priv->rx_req != NULL;
/* Prepare buffer to receivce data from usb driver */
iob = iob_tryalloc(false);
if (iob == NULL)
{
return false;
}
iob_reserve(iob, CONFIG_NET_LL_GUARDSIZE);
if ((priv->rx_req = rndis_allocwrreq(priv)) == NULL)
{
iob_free_chain(iob);
return false;
}
priv->rx_req->iob = iob;
rndis_iob2buf(priv, priv->rx_req);
return true;
}
/****************************************************************************
@ -777,9 +852,15 @@ static void rndis_giverxreq(FAR struct rndis_dev_s *priv)
DEBUGASSERT(priv->net_req == NULL);
priv->net_req = priv->rx_req;
priv->netdev.d_buf = &priv->net_req->req->buf[RNDIS_PACKET_HDR_SIZE];
priv->netdev.d_len = CONFIG_NET_ETH_PKTSIZE;
priv->rx_req = NULL;
/* Move iob from net_req to netdev */
netdev_iob_release(&priv->netdev);
priv->netdev.d_iob = priv->net_req->iob;
priv->netdev.d_len = priv->net_req->iob->io_pktlen;
priv->net_req->iob = NULL;
}
/****************************************************************************
@ -801,20 +882,23 @@ static void rndis_giverxreq(FAR struct rndis_dev_s *priv)
****************************************************************************/
static uint16_t rndis_fillrequest(FAR struct rndis_dev_s *priv,
FAR struct usbdev_req_s *req)
FAR struct rndis_req_s *req)
{
size_t datalen;
req->len = 0;
req->req->len = 0;
datalen = MIN(priv->netdev.d_len,
CONFIG_RNDIS_BULKIN_REQLEN - RNDIS_PACKET_HDR_SIZE);
if (datalen > 0)
{
/* Send the required headers */
/* Move iob from netdev to net_req and send the required headers */
req->iob = priv->netdev.d_iob;
netdev_iob_clear(&priv->netdev);
rndis_iob2buf(priv, req);
FAR struct rndis_packet_msg *msg =
(FAR struct rndis_packet_msg *)req->buf;
(FAR struct rndis_packet_msg *)req->req->buf;
memset(msg, 0, RNDIS_PACKET_HDR_SIZE);
msg->msgtype = RNDIS_PACKET_MSG;
@ -822,11 +906,11 @@ static uint16_t rndis_fillrequest(FAR struct rndis_dev_s *priv,
msg->dataoffset = RNDIS_PACKET_HDR_SIZE - 8;
msg->datalen = datalen;
req->flags = USBDEV_REQFLAGS_NULLPKT;
req->len = datalen + RNDIS_PACKET_HDR_SIZE;
req->req->flags = USBDEV_REQFLAGS_NULLPKT;
req->req->len = datalen + RNDIS_PACKET_HDR_SIZE;
}
return req->len;
return req->req->len;
}
/****************************************************************************
@ -852,7 +936,9 @@ static void rndis_rxdispatch(FAR void *arg)
priv->netdev.d_len = priv->current_rx_datagram_size;
leave_critical_section(flags);
hdr = (FAR struct eth_hdr_s *)priv->netdev.d_buf;
hdr = (FAR struct eth_hdr_s *)
&priv->netdev.d_iob->io_data[CONFIG_NET_LL_GUARDSIZE -
NET_LL_HDRLEN(&priv->netdev)];
/* We only accept IP packets of the configured type and ARP packets */
@ -965,7 +1051,7 @@ static int rndis_transmit(FAR struct rndis_dev_s *priv)
/* Queue the packet */
rndis_fillrequest(priv, priv->net_req->req);
rndis_fillrequest(priv, priv->net_req);
rndis_sendnetreq(priv);
if (!rndis_allocnetreq(priv))
@ -1110,9 +1196,10 @@ static inline int rndis_recvpacket(FAR struct rndis_dev_s *priv,
priv->current_rx_datagram_offset = msg->dataoffset + 8;
if (priv->current_rx_datagram_offset < reqlen)
{
memcpy(&priv->rx_req->req->buf[RNDIS_PACKET_HDR_SIZE],
iob_trycopyin(priv->rx_req->iob,
&reqbuf[priv->current_rx_datagram_offset],
reqlen - priv->current_rx_datagram_offset);
reqlen - priv->current_rx_datagram_offset,
-NET_LL_HDRLEN(&priv->netdev), false);
}
}
else
@ -1136,8 +1223,8 @@ static inline int rndis_recvpacket(FAR struct rndis_dev_s *priv,
if ((index + copysize) <= CONFIG_NET_ETH_PKTSIZE)
{
memcpy(&priv->rx_req->req->buf[RNDIS_PACKET_HDR_SIZE + index],
reqbuf, copysize);
iob_trycopyin(priv->rx_req->iob, reqbuf, copysize,
priv->rx_req->iob->io_pktlen, false);
}
else
{
@ -1721,7 +1808,13 @@ static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
req = EP_ALLOCREQ(ep);
if (req != NULL)
{
/* rdreq/epintin_req/ctrlreq use fixed memory
* reqcontainer use iob dynamically when needed
*/
req->len = len;
if (len > 0)
{
req->buf = EP_ALLOCBUFFER(ep, len);
if (req->buf == NULL)
@ -1730,6 +1823,11 @@ static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
req = NULL;
}
}
else
{
req->buf = NULL;
}
}
return req;
}
@ -2109,9 +2207,11 @@ static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
* size.
*/
reqlen = 64;
if (CONFIG_RNDIS_BULKIN_REQLEN > reqlen)
if (CONFIG_IOB_BUFSIZE >= CONFIG_RNDIS_BULKIN_REQLEN)
{
reqlen = 0;
}
else
{
reqlen = CONFIG_RNDIS_BULKIN_REQLEN;
}
@ -2128,6 +2228,7 @@ static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
goto errout;
}
reqcontainer->buf = reqcontainer->req->buf;
reqcontainer->req->priv = reqcontainer;
reqcontainer->req->callback = rndis_wrcomplete;
@ -2269,6 +2370,7 @@ static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
reqcontainer = (struct rndis_req_s *)sq_remfirst(&priv->reqlist);
if (reqcontainer->req != NULL)
{
reqcontainer->req->buf = reqcontainer->buf;
usbclass_freereq(priv->epbulkin, reqcontainer->req);
}
}