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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 01:08:52 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-02 01:08:52 +0400 |
commit | 73287a43cc79ca06629a88d1a199cd283f42456a (patch) | |
tree | acf4456e260115bea77ee31a29f10ce17f0db45c /Documentation/networking/stmmac.txt | |
parent | 251df49db3327c64bf917bfdba94491fde2b4ee0 (diff) | |
parent | 20074f357da4a637430aec2879c9d864c5d2c23c (diff) | |
download | linux-73287a43cc79ca06629a88d1a199cd283f42456a.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights (1721 non-merge commits, this has to be a record of some
sort):
1) Add 'random' mode to team driver, from Jiri Pirko and Eric
Dumazet.
2) Make it so that any driver that supports configuration of multiple
MAC addresses can provide the forwarding database add and del
calls by providing a default implementation and hooking that up if
the driver doesn't have an explicit set of handlers. From Vlad
Yasevich.
3) Support GSO segmentation over tunnels and other encapsulating
devices such as VXLAN, from Pravin B Shelar.
4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton.
5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita
Dukkipati.
6) In the PHY layer, allow supporting wake-on-lan in situations where
the PHY registers have to be written for it to be configured.
Use it to support wake-on-lan in mv643xx_eth.
From Michael Stapelberg.
7) Significantly improve firewire IPV6 support, from YOSHIFUJI
Hideaki.
8) Allow multiple packets to be sent in a single transmission using
network coding in batman-adv, from Martin Hundebøll.
9) Add support for T5 cxgb4 chips, from Santosh Rastapur.
10) Generalize the VXLAN forwarding tables so that there is more
flexibility in configurating various aspects of the endpoints.
From David Stevens.
11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver,
from Dmitry Kravkov.
12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo
Neira Ayuso.
13) Start adding networking selftests.
14) In situations of overload on the same AF_PACKET fanout socket, or
per-cpu packet receive queue, minimize drop by distributing the
load to other cpus/fanouts. From Willem de Bruijn and Eric
Dumazet.
15) Add support for new payload offset BPF instruction, from Daniel
Borkmann.
16) Convert several drivers over to mdoule_platform_driver(), from
Sachin Kamat.
17) Provide a minimal BPF JIT image disassembler userspace tool, from
Daniel Borkmann.
18) Rewrite F-RTO implementation in TCP to match the final
specification of it in RFC4138 and RFC5682. From Yuchung Cheng.
19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear
you like netlink, so I implemented netlink dumping of netlink
sockets.") From Andrey Vagin.
20) Remove ugly passing of rtnetlink attributes into rtnl_doit
functions, from Thomas Graf.
21) Allow userspace to be able to see if a configuration change occurs
in the middle of an address or device list dump, from Nicolas
Dichtel.
22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes
Frederic Sowa.
23) Increase accuracy of packet length used by packet scheduler, from
Jason Wang.
24) Beginning set of changes to make ipv4/ipv6 fragment handling more
scalable and less susceptible to overload and locking contention,
from Jesper Dangaard Brouer.
25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*()
instead. From Hong Zhiguo.
26) Optimize route usage in IPVS by avoiding reference counting where
possible, from Julian Anastasov.
27) Convert IPVS schedulers to RCU, also from Julian Anastasov.
28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger
Eitzenberger.
29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG,
nfnetlink_log, and nfnetlink_queue. From Gao feng.
30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa.
31) Support several new r8169 chips, from Hayes Wang.
32) Support tokenized interface identifiers in ipv6, from Daniel
Borkmann.
33) Use usbnet_link_change() helper in USB net driver, from Ming Lei.
34) Add 802.1ad vlan offload support, from Patrick McHardy.
35) Support mmap() based netlink communication, also from Patrick
McHardy.
36) Support HW timestamping in mlx4 driver, from Amir Vadai.
37) Rationalize AF_PACKET packet timestamping when transmitting, from
Willem de Bruijn and Daniel Borkmann.
38) Bring parity to what's provided by /proc/net/packet socket dumping
and the info provided by netlink socket dumping of AF_PACKET
sockets. From Nicolas Dichtel.
39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin
Poirier"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
filter: fix va_list build error
af_unix: fix a fatal race with bit fields
bnx2x: Prevent memory leak when cnic is absent
bnx2x: correct reading of speed capabilities
net: sctp: attribute printl with __printf for gcc fmt checks
netlink: kconfig: move mmap i/o into netlink kconfig
netpoll: convert mutex into a semaphore
netlink: Fix skb ref counting.
net_sched: act_ipt forward compat with xtables
mlx4_en: fix a build error on 32bit arches
Revert "bnx2x: allow nvram test to run when device is down"
bridge: avoid OOPS if root port not found
drivers: net: cpsw: fix kernel warn on cpsw irq enable
sh_eth: use random MAC address if no valid one supplied
3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA)
tg3: fix to append hardware time stamping flags
unix/stream: fix peeking with an offset larger than data in queue
unix/dgram: fix peeking with an offset larger than data in queue
unix/dgram: peek beyond 0-sized skbs
openvswitch: Remove unneeded ovs_netdev_get_ifindex()
...
Diffstat (limited to 'Documentation/networking/stmmac.txt')
-rw-r--r-- | Documentation/networking/stmmac.txt | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt index f9fa6db40a52..654d2e55c8cb 100644 --- a/Documentation/networking/stmmac.txt +++ b/Documentation/networking/stmmac.txt @@ -1,6 +1,6 @@ STMicroelectronics 10/100/1000 Synopsys Ethernet driver -Copyright (C) 2007-2010 STMicroelectronics Ltd +Copyright (C) 2007-2013 STMicroelectronics Ltd Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> This is the driver for the MAC 10/100/1000 on-chip Ethernet controllers @@ -10,7 +10,7 @@ Currently this network device driver is for all STM embedded MAC/GMAC (i.e. 7xxx/5xxx SoCs), SPEAr (arm), Loongson1B (mips) and XLINX XC2V3000 FF1152AMT0221 D1215994A VIRTEX FPGA board. -DWC Ether MAC 10/100/1000 Universal version 3.60a (and older) and DWC Ether +DWC Ether MAC 10/100/1000 Universal version 3.70a (and older) and DWC Ether MAC 10/100 Universal version 4.0 have been used for developing this driver. This driver supports both the platform bus and PCI. @@ -32,6 +32,8 @@ The kernel configuration option is STMMAC_ETH: watchdog: transmit timeout (in milliseconds); flow_ctrl: Flow control ability [on/off]; pause: Flow Control Pause Time; + eee_timer: tx EEE timer; + chain_mode: select chain mode instead of ring. 3) Command line options Driver parameters can be also passed in command line by using: @@ -164,12 +166,12 @@ Where: o bus_setup: perform HW setup of the bus. For example, on some ST platforms this field is used to configure the AMBA bridge to generate more efficient STBus traffic. - o init/exit: callbacks used for calling a custom initialisation; + o init/exit: callbacks used for calling a custom initialization; this is sometime necessary on some platforms (e.g. ST boxes) where the HW needs to have set some PIO lines or system cfg registers. o custom_cfg/custom_data: this is a custom configuration that can be passed - while initialising the resources. + while initializing the resources. o bsp_priv: another private poiter. For MDIO bus The we have: @@ -273,6 +275,8 @@ reset procedure etc). o norm_desc.c: functions for handling normal descriptors; o chain_mode.c/ring_mode.c:: functions to manage RING/CHAINED modes; o mmc_core.c/mmc.h: Management MAC Counters; + o stmmac_hwtstamp.c: HW timestamp support for PTP + o stmmac_ptp.c: PTP 1588 clock 5) Debug Information @@ -326,6 +330,35 @@ To enter in Tx LPI mode the driver needs to have a software timer that enable and disable the LPI mode when there is nothing to be transmitted. -7) TODO: +7) Extended descriptors +The extended descriptors give us information about the receive Ethernet payload +when it is carrying PTP packets or TCP/UDP/ICMP over IP. +These are not available on GMAC Synopsys chips older than the 3.50. +At probe time the driver will decide if these can be actually used. +This support also is mandatory for PTPv2 because the extra descriptors 6 and 7 +are used for saving the hardware timestamps. + +8) Precision Time Protocol (PTP) +The driver supports the IEEE 1588-2002, Precision Time Protocol (PTP), +which enables precise synchronization of clocks in measurement and +control systems implemented with technologies such as network +communication. + +In addition to the basic timestamp features mentioned in IEEE 1588-2002 +Timestamps, new GMAC cores support the advanced timestamp features. +IEEE 1588-2008 that can be enabled when configure the Kernel. + +9) SGMII/RGMII supports +New GMAC devices provide own way to manage RGMII/SGMII. +This information is available at run-time by looking at the +HW capability register. This means that the stmmac can manage +auto-negotiation and link status w/o using the PHYLIB stuff +In fact, the HW provides a subset of extended registers to +restart the ANE, verify Full/Half duplex mode and Speed. +Also thanks to these registers it is possible to look at the +Auto-negotiated Link Parter Ability. + +10) TODO: o XGMAC is not supported. - o Add the PTP - precision time protocol + o Complete the TBI & RTBI support. + o extened VLAN support for 3.70a SYNP GMAC. |