Datagram Congestion Control Protocol (DCCP) is an unreliable, connection
oriented protocol designed to solve issues present in UDP and TCP, particularly
for real-time and multimedia (streaming) traffic.
-It divides into a base protocol (RFC 4340) and plugable congestion control
-modules called CCIDs. Like plugable TCP congestion control, at least one CCID
+It divides into a base protocol (RFC 4340) and pluggable congestion control
+modules called CCIDs. Like pluggable TCP congestion control, at least one CCID
needs to be enabled in order for the protocol to function properly. In the Linux
implementation, this is the TCP-like CCID2 (RFC 4341). Additional CCIDs, such as
the TCP-friendly CCID3 (RFC 4342), are optional.
PRO/100 Family of Adapters is e100.
As an example, if you install the e100 driver for two PRO/100 adapters
- (eth0 and eth1), add the following to a configuraton file in /etc/modprobe.d/
+ (eth0 and eth1), add the following to a configuration file in /etc/modprobe.d/
alias eth0 e100
alias eth1 e100
Introduction
============
-The IEEE 802.15.4 working group focuses on standartization of bottom
+The IEEE 802.15.4 working group focuses on standardization of bottom
two layers: Medium Access Control (MAC) and Physical (PHY). And there
are mainly two options available for upper layers:
- ZigBee - proprietary protocol from ZigBee Alliance
code via plain sk_buffs. On skb reception skb->cb must contain additional
info as described in the struct ieee802154_mac_cb. During packet transmission
the skb->cb is used to provide additional data to device's header_ops->create
-function. Be aware, that this data can be overriden later (when socket code
+function. Be aware that this data can be overridden later (when socket code
submits skb to qdisc), so if you need something from that cb later, you should
store info in the skb->data on your own.
implemented to provide extra debug information to help diagnose
problems.) Users should use the netlink API.
-/proc/net/pppol2tp is also provided for backwards compaibility with
+/proc/net/pppol2tp is also provided for backwards compatibility with
the original pppol2tp driver. It lists information about L2TPv2
tunnels and sessions only. Its use is discouraged.
The "net" tree continues to collect fixes for the vX.Y content, and
is fed back to Linus at regular (~weekly) intervals. Meaning that the
- focus for "net" is on stablilization and bugfixes.
+ focus for "net" is on stabilization and bugfixes.
Finally, the vX.Y gets released, and the whole cycle starts over.
Conversion of the reception path involves calling poll() on the file
descriptor, once the socket is readable the frames from the ring are
-processsed in order until no more messages are available, as indicated by
+processed in order until no more messages are available, as indicated by
a status word in the frame header.
On kernel side, in order to make use of memory mapped I/O on receive, the
Conversion of the transmit path involves changing message construction to
use memory from the TX ring instead of (usually) a buffer declared on the
-stack and setting up the frame header approriately. Optionally poll() can
+stack and setting up the frame header appropriately. Optionally poll() can
be used to wait for free frames in the TX ring.
Structured and definitions for using memory mapped I/O are contained in
if (setsockopt(fd, NETLINK_TX_RING, &req, sizeof(req)) < 0)
exit(1)
- /* Calculate size of each invididual ring */
+ /* Calculate size of each individual ring */
ring_size = req.nm_block_nr * req.nm_block_size;
/* Map RX/TX rings. The TX ring is located after the RX ring */
it as lower layer.
Note that for certain kind of soft-devices, which are not managing any
-real hardware, there is possible to set this bit from userpsace.
-One should use TVL IFLA_CARRIER to do so.
+real hardware, it is possible to set this bit from userspace. One
+should use TVL IFLA_CARRIER to do so.
netif_carrier_ok() can be used to query that bit.
(*) Calls use ACK packets to handle reliability. Data packets are also
explicitly sequenced per call.
- (*) There are two types of positive acknowledgement: hard-ACKs and soft-ACKs.
+ (*) There are two types of positive acknowledgment: hard-ACKs and soft-ACKs.
A hard-ACK indicates to the far side that all the data received to a point
has been received and processed; a soft-ACK indicates that the data has
been received but may yet be discarded and re-requested. The sender may
o pmt: core has the embedded power module (optional).
o force_sf_dma_mode: force DMA to use the Store and Forward mode
instead of the Threshold.
- o force_thresh_dma_mode: force DMA to use the Shreshold mode other than
+ o force_thresh_dma_mode: force DMA to use the Threshold mode other than
the Store and Forward mode.
o riwt_off: force to disable the RX watchdog feature and switch to NAPI mode.
o fix_mac_speed: this callback is used for modifying some syscfg registers
registers.
o custom_cfg/custom_data: this is a custom configuration that can be passed
while initializing the resources.
- o bsp_priv: another private poiter.
+ o bsp_priv: another private pointer.
For MDIO bus The we have:
o dwmac1000_dma.c: dma functions for the GMAC chip;
o dwmac1000.h: specific header file for the GMAC;
o dwmac100_core: MAC 100 core and dma code;
- o dwmac100_dma.c: dma funtions for the MAC chip;
+ o dwmac100_dma.c: dma functions for the MAC chip;
o dwmac1000.h: specific header file for the MAC;
o dwmac_lib.c: generic DMA functions shared among chips;
o enh_desc.c: functions for handling enhanced descriptors;
10) TODO:
o XGMAC is not supported.
o Complete the TBI & RTBI support.
- o extened VLAN support for 3.70a SYNP GMAC.
+ o extend VLAN support for 3.70a SYNP GMAC.
There are several parameters which may be provided to the driver when
its module is loaded. These are usually placed in /etc/modprobe.d/*.conf
-configuretion files. Example:
+configuration files. Example:
options 3c59x debug=3 rx_copybreak=300
The driver's interrupt service routine can handle many receive and
transmit packets in a single invocation. It does this in a loop.
- The value of max_interrupt_work governs how mnay times the interrupt
+ The value of max_interrupt_work governs how many times the interrupt
service routine will loop. The default value is 32 loops. If this
is exceeded the interrupt service routine gives up and generates a
warning message "eth0: Too much work in interrupt".
later.
The lapb module interface was modified to support this. Its
data_indication() method should now transparently pass the
- netif_rx() return value to the (lapb mopdule) caller.
+ netif_rx() return value to the (lapb module) caller.
(2) Drivers for kernel versions 2.2.x should always check the global
variable netdev_dropping when a new frame is received. The driver
should only call netif_rx() if netdev_dropping is zero. Otherwise
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