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* [infiniband] Allow for sending MADs via GMA without retransmissionMichael Brown2009-07-183-30/+54
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* [infiniband] Make qkey and rate optional parameters to ib_post_send()Michael Brown2009-07-183-10/+10
| | | | | | | | | | The queue key is stored as a property of the queue pair, and so can optionally be added by the Infiniband core at the time of calling ib_post_send(), rather than always having to be specified by the caller. This allows IPoIB to avoid explicitly keeping track of the data queue key.
* [ipoib] Clarify new role of IPoIB peer cache as for MAC addresses onlyMichael Brown2009-07-181-39/+21Star
| | | | | | | Now that path record lookups are handled entirely via ib_resolve_path(), the only role of the IPoIB peer cache is as a lookup table for MAC addresses. Update the code structure and comments to reflect this.
* [ipoib] Expose the real broadcast MACMichael Brown2009-07-181-46/+37Star
| | | | | | | | | | | | The IPoIB broadcast MAC address varies according to the partition key. Now that the broadcast MAC address is a property of the network device rather than of the link layer, we can expose this real MAC address directly. The broadcast LID is now identified via a path record lookup; this is marginally inefficient (since it was present in the MCMemberRecord GetResponse), but avoids the need to special-case broadcasts when constructing the address vector in ipoib_transmit().
* [ipoib] Use Infiniband broadcast QPN in IPoIB broadcast MAC addressMichael Brown2009-07-181-10/+3Star
| | | | Remove the special handling of the IPoIB broadcast QPN.
* [infiniband] Provide a general mechanism for path record lookupsMichael Brown2009-07-184-108/+247
| | | | Generalise out the path record lookup code from IPoIB.
* [infiniband] Create a general management agentMichael Brown2009-07-186-7/+534
| | | | | | Generalise the subnet management agent into a general management agent capable of sending and responding to MADs, including support for retransmissions as necessary.
* [infiniband] Centralise SMA and GMA queue constantsMichael Brown2009-07-185-20/+23
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* [infiniband] Poll completion queues automaticallyMichael Brown2009-07-187-113/+124
| | | | | | | | | | | | | | | | | Currently, all Infiniband users must create a process for polling their completion queues (or rely on a regular hook such as netdev_poll() in ipoib.c). Move instead to a model whereby the Infiniband core maintains a single process calling ib_poll_eq(), and polling the event queue triggers polls of the applicable completion queues. (At present, the Infiniband core simply polls all of the device's completion queues.) Polling a completion queue will now implicitly refill all attached receive work queues; this is analogous to the way that netdev_poll() implicitly refills the RX ring. Infiniband users no longer need to create a process just to poll their completion queues and refill their receive rings.
* [infiniband] Centralise assumption of 2048-byte payloadsMichael Brown2009-07-188-18/+22
| | | | | | | | | | IPoIB and the SMA have separate constants for the packet size to be used to I/O buffer allocations. Merge these into the single IB_MAX_PAYLOAD_SIZE constant. (Various other points in the Infiniband stack have hard-coded assumptions of a 2048-byte payload; we don't currently support variable MTUs.)
* [infiniband] Provide ib_get_hca_info() as a commonly-available functionMichael Brown2009-07-184-19/+35
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* [infiniband] Split queue set functionality out of ipoib.c to ib_qset.cMichael Brown2009-07-184-137/+204
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* [infiniband] Move non-driver-specific code to net/infinibandMichael Brown2009-07-184-1/+1
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* [netdevice] Make ll_broadcast per-netdevice rather than per-ll_protocolMichael Brown2009-07-1812-58/+49Star
| | | | | | | | | IPoIB has a link-layer broadcast address that varies according to the partition key. We currently go through several contortions to pretend that the link-layer address is a fixed constant; by making the broadcast address a property of the network device rather than the link-layer protocol it will be possible to simplify IPoIB's broadcast handling.
* [ata] Make ATA command issuing partially asynchronousMichael Brown2009-07-184-9/+29
| | | | | | | | | Move the icky call to step() from aoe.c to ata.c; this takes it at least one step further away from where it really doesn't belong. Unfortunately, AoE has the ugly aoe_discover() mechanism which means that we still have a step() loop in aoe.c for now; this needs to be replaced at some future point.
* [scsi] Improve SCSI debuggingMichael Brown2009-07-181-9/+26
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* [scsi] Make SCSI command issuing partially asynchronousMichael Brown2009-07-184-30/+33
| | | | | Move the icky call to step() from iscsi.c to scsi.c; this takes it at least one step further away from where it really doesn't belong.
* [debug] Use a delimiter to break up DBG_HD() outputMichael Brown2009-07-171-1/+2
| | | | | Reading sixteen columns of hex digits can be difficult; include a "-" character to split the output into two groups of eight columns.
* [xfer] Always nullify interface while sending close() messageMichael Brown2009-07-062-5/+3Star
| | | | | | | | | | | | | | | Objects typically call xfer_close() as part of their response to a close() message. If the initiating object has already nullified the xfer interface then this isn't a problem, but it can lead to unexpected behaviour when the initiating object is aiming to reuse the connection and so does not nullify the interface. Fix by always temporarily nullifying the interface during xfer_close() (as was already being done by xfer_vreopen() in order to work around this specific problem). Reported-by: infernix <infernix@infernix.net> Tested-by: infernix <infernix@infernix.net>
* [pxe] Add startpxe and stoppxe commandsMichael Brown2009-06-284-0/+38
| | | | | | | | | These commands can be used to activate or deactivate the PXE API (on a specifiable network interface). This is currently of limited use, since most image formats will call shutdown() before booting the image, meaning that the underlying net device gets shut down during remove_devices() anyway.
* [ifmgmt] Move ifmgmt_cmd.h to include/hciMichael Brown2009-06-282-1/+1
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* [ifmgmt] Optimise prototype for ifcommon_exec()Michael Brown2009-06-282-12/+12
| | | | | | | | | | ifcommon_exec() was long-ago marked as __attribute__((regparm(2))) in order to minimise the size of functions that call into it. Since then, gPXE has added -mregparm=3 as a general compilation option, and this "optimisation" is now counter-productive. Change (and simplify) the prototype to minimise code size given the current compilation conditions.
* [pxe] Check for unhookable interrupts in PXENV_STOP_UNDIMichael Brown2009-06-281-0/+9
| | | | | | PXENV_STOP_UNDI should return PXENV_STATUS_KEEP_UNDI if the UNDI cannot be safely unloaded (e.g. due to interrupt vectors that could not be unhooked).
* [pxe] Create pxe_[de]activate() wrapper functionsMichael Brown2009-06-284-40/+61
| | | | | Merge the pxe_set_netdev()+pxe_[un]hook_int1a() pattern into a single pxe_[de]activate() call.
* [pxe] Make pxe_init_structures() an initialisation functionMichael Brown2009-06-284-6/+7
| | | | | | | | | pxe_init_structures() fills in the fields of the !PXE and PXENV+ structures that aren't known until gPXE starts up. Once gPXE is started, these values will never change. Make pxe_init_structures() an initialisation function so that PXE users don't have to worry about calling it.
* [pxe] Update UNDI transmit count before transmitting packetMichael Brown2009-06-271-4/+8
| | | | | | | | | | | | | It is possible that the UNDI ISR may be triggered before netdev_tx() returns control to pxenv_undi_transmit(). This means that pxenv_undi_isr() may see a zero undi_tx_count, and so not check for TX completions. This is not a significant problem, since it will check for TX completions on the next call to pxenv_undi_isr() anyway; it just means that the NBP will see a spurious IRQ that was apparently caused by nothing. Fix by updating the undi_tx_count before calling netdev_tx(), so that pxenv_undi_isr() can decrement it and report the TX completion.
* [pxe] Implement PXENV_UNDI_{GET,SET}_MCAST_ADDRESSMichael Brown2009-06-271-15/+42
| | | | | | | | | | | | | | | Symantec Ghost requires working multicast support. gPXE configures all (sufficiently supported) network adapters into "receive all multicasts" mode, which means that PXENV_UNDI_SET_MCAST_ADDRESS is actually a no-op, but the current implementation returns PXENV_STATUS_UNSUPPORTED instead. Fix by making PXENV_UNDI_SET_MCAST_ADDRESS return success. For good measure, also implement PXENV_UNDI_GET_MCAST_ADDRESS, since the relevant functionality is now exposed by the net device core. Note that this will silently fail if the gPXE driver for the NIC being used fails to configure the NIC in "receive all multicasts" mode.
* [pxe] Improve pxe_undi debug messagesMichael Brown2009-06-272-32/+93
| | | | | | | | The PXE debugging messages have remained pretty much unaltered since Etherboot 5.4, and are now difficult to read in comparison to most of the rest of gPXE. Bring the pxe_undi debug messages up to normal gPXE standards.
* [hci] Expose ifcommon_exec() in a local header so wireless commands can use itJoshua Oreman2009-06-242-1/+32
| | | | | | | | This keeps code size down, since the wireless interface management commands have the same command-line interface and overall structure as the wired commands. Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [dhcp] Await link-up before starting DHCPJoshua Oreman2009-06-242-7/+6Star
| | | | | Modified-by: Michael Brown <mcb30@etherboot.org> Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [ifmgmt] Move link-up status messages from autoboot() to iflinkwait()Joshua Oreman2009-06-242-12/+28
| | | | | | | | | | | | With the addition of link status codes, we can now display a detailed error indication if iflinkwait() fails. Putting the error output in iflinkwait avoids code duplication, and gains symmetry with the other interface management routines; ifopen() already prints an error directly if it cannot open its interface. Modified-by: Michael Brown <mcb30@etherboot.org> Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [netdevice] Add mechanism for reporting detailed link status codesMichael Brown2009-06-244-8/+48
| | | | | | | | Expand the NETDEV_LINK_UP bit into a link_rc status code field, allowing specific reasons for link failure to be reported via "ifstat". Originally-authored-by: Joshua Oreman <oremanj@rwcr.net>
* [comboot] Implement INT 22h AX=000Bh (Get Serial Console Configuration)Daniel Verkamp2009-06-241-1/+9
| | | | Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [pxe] Fix interoperability with the Symantec (undipd) DOS UNDI driverMichael Brown2009-06-231-1/+1
| | | | | | | | | | | The Symantec UNDI DOS driver fails when run on top of gPXE because we return our interface type as "gPXE" rather than one of the predefined NDIS interface type strings. Fix by returning the standard "DIX+802.3" string; this isn't necessarily always accurate, but it's highly unlikely that anything trying to use the UNDI API would understand our IPoIB link-layer pseudo-header anyway.
* [pxe] Fix interoperability with the Intel DOS UNDI driverMichael Brown2009-06-232-1/+23
| | | | | | | | The Intel DOS UNDI driver fails when run on top of gPXE because we do not fill in the ServiceFlags field in PXENV_UNDI_GET_IFACE_INFO. Fix by filling in the ServiceFlags field with reasonable values indicating our approximate feature capabilities.
* [pxe] Fix interoperability with the 3Com DOS UNDI driverMichael Brown2009-06-231-2/+15
| | | | | | | | | | | | | | | The 3Com DOS UNDI driver fails when run on top of gPXE for two reasons: firstly because PXENV_UNDI_SET_PACKET_FILTER is unsupported, and secondly because gPXE enters the NBP without enabling interrupts on the NIC, and the 3Com driver never calls PXENV_UNDI_OPEN. Fix by always returning success from PXENV_UNDI_SET_PACKET_FILTER (which is no worse than the current situation, since we already ignore the receive packet filter in PXENV_UNDI_OPEN), and by forcibly enabling interrupts on the NIC within PXENV_UNDI_TRANSMIT. The latter is something of a hack, but avoids the need to implement a complete base-code ISR that we would otherwise need if we were to enter the NBP with interrupts enabled.
* [rtl8139] Split debug messages into DBGLVL_LOG and DBGLVL_EXTRAMichael Brown2009-06-231-13/+18
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* [undi] Include PXENV_GET_IFACE_INFO's ServiceFlags in debug outputMichael Brown2009-06-231-2/+3
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* [e1000] Ensure descriptor is fully written before sending packetMichael Brown2009-06-231-0/+1
| | | | Reported-by: Mark McLoughlin <markmc@redhat.com>
* [tcp] Avoid rewinding sequence numbers on receiving old duplicate ACKsMichael Brown2009-06-231-27/+31
| | | | | | | | | Commit 558c1a4 ("[tcp] Improve robustness in the presence of duplicated received packets") introduced a regression in that an old duplicate ACK received while in the ESTABLISHED state would pass through normal ACK processing, including updating tcp->snd_seq. Fix by ensuring that ACK processing ignores all duplicate ACKs.
* [tcp] Attempt to catch all possible error cases with debug messagesMichael Brown2009-06-231-11/+36
| | | | | | | All TCP errors or unusual events should now generate a debugging message at DBGLVL_LOG, with enough information (SEQ and ACK numbers) to be able to identify the corresponding packet (or missing packet) in a network trace from the remote end.
* [tcp] Include current sequence numbers in "timer expired" messagesMichael Brown2009-06-231-2/+3
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* [tcp] Move high-frequency debug messages to DBGLVL_EXTRAMichael Brown2009-06-231-21/+21
| | | | | | This makes it possible to leave TCP debugging enabled in order to see interesting TCP events, without flooding the console with at least one message per packet.
* [image] Modify imgfree command to accept an argumentJoshua Oreman2009-06-231-5/+18
| | | | | | | This resolves potential difficulties occurring when more than one script is used. Total cost: 88 bytes uncompressed. Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [netdevice] Adjust maximum link-layer header length for 802.11Joshua Oreman2009-06-231-4/+5
| | | | Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [netdevice] Add netdev argument to link-layer push and pull handlersJoshua Oreman2009-06-236-17/+30
| | | | | | | | | | | | | | | In order to construct outgoing link-layer frames or parse incoming ones properly, some protocols (such as 802.11) need more state than is available in the existing variables passed to the link-layer protocol handlers. To remedy this, add struct net_device *netdev as the first argument to each of these functions, so that more information can be fetched from the link layer-private part of the network device. Updated all three call sites (netdevice.c, efi_snp.c, pxe_undi.c) and both implementations (ethernet.c, ipoib.c) of ll_protocol to use the new argument. Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [nvs] Add init function for Atmel 93C66 EEPROMJoshua Oreman2009-06-231-0/+13
| | | | | | | | The 93C66 is identical to the 93C56 in programming interface and addressing, but twice as large in data storage (4096 bits). It's used in some RTL8185 wireless cards. Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [tcp] Improve robustness in the presence of duplicated received packetsMichael Brown2009-06-232-13/+38
| | | | | | | | | | | | | | | | | | | | | | gPXE responds to duplicated ACKs with an immediate retransmission, which can lead to a sorceror's apprentice syndrome. It also responds to out-of-range (or old duplicate) ACKs with a RST, which can cause valid connections to be dropped. Fix the sorceror's apprentice syndrome by leaving the retransmission timer running (and so inhibiting the immediate retransmission) when we receive a potential duplicate ACK. This seems to match the behaviour of Linux observed via wireshark traces. Fix the RST issue by sending RST only on out-of-range ACKs that occur before the connection is fully established, as per RFC 793. These problems were exposed during development of the 802.11 wireless link layer; the 802.11 protocol has a failure mode that can easily cause duplicated packets. The fixes were tested in a controlled way by faking large numbers of duplicated packets in the rtl8139 driver. Originally-fixed-by: Joshua Oreman <oremanj@rwcr.net>
* [settings] Fix setting_cmp() to handle nameless settingsShao Miller2009-06-131-2/+6
| | | | | | | | | | setting_cmp() compares by option tag and then by name. Empty names will always match, which gives us a false positive. Fix by explicitly checking for empty names. Modified-by: Michael Brown <mcb30@etherboot.org> Signed-off-by: Michael Brown <mcb30@etherboot.org>
* [netdevice] Fix incorrect value for MAX_LL_HEADER_LENMichael Brown2009-06-051-3/+11
| | | | | | | | | | MAX_LL_HEADER_LEN is erroneously set to 6 rather than 14, resulting in possible data corruption whenever we send an ARP packet. Fix value and add a comment explaining why MAX_LL_ADDR_LEN is greater than MAX_LL_HEADER_LEN. Reported-by: Joshua Oreman <oremanj@rwcr.net>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-04 17:39:10 +0200