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* sctp: use time_before or time_after for comparing jiffiesWei Yongjun2009-03-022-4/+6
| | | | | | | | | The functions time_before or time_after are more robust for comparing jiffies against other values. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sctp: fix the length check in sctp_getsockopt_maxburst()Wei Yongjun2009-03-021-1/+2
| | | | | | | | | | | | The code in sctp_getsockopt_maxburst() doesn't allow len to be larger then struct sctp_assoc_value, which is a common case where app writers just pass down the sizeof(buf) or something similar. This patch fix the problem. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sctp: remove dup code in net/sctp/socket.cWei Yongjun2009-03-021-6/+0
| | | | | | | | Remove dup check of "if (optlen < sizeof(int))". Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sctp: Add some missing types for debug messageWei Yongjun2009-03-021-0/+4
| | | | | | | | | This patch add the type name "AUTH" and primitive type name "PRIMITIVE_ASCONF" for debug message. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlge: Add support for getting/setting port config.Ron Mercer2009-03-023-1/+228
| | | | | | | | | | | | This patch adds functionality to get and set port parameters. Currently it is used to set maximum TX/RX frame sizes. This process is also capable of setting: 1) Pause type: Standard or Priority based. 2) Loop back mode. 3) Enable Jumbo frame mode (included here...) Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlge: Add support for device ID 8000.Ron Mercer2009-03-022-1/+100
| | | | | | | | This device has more firmware support for link management, setting TX and RX maximum frame sizes. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlge: Add support for firmware mailbox commands.Ron Mercer2009-03-021-4/+218
| | | | | | | | | This interface will be used for setting things like maximum frame size, setting WOL, and ACKing changes requested by the FCOE function. Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tcp: tcp_init_wl / tcp_update_wl argument cleanupHantzis Fotis2009-03-024-9/+8
| | | | | | | | | | | The above functions from include/net/tcp.h have been defined with an argument that they never use. The argument is 'u32 ack' which is never used inside the function body, and thus it can be removed. The rest of the patch involves the necessary changes to the function callers of the above two functions. Signed-off-by: Hantzis Fotis <xantzis@ceid.upatras.gr> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Version updateEilon Greenstein2009-03-021-2/+2
| | | | | Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Register dumpEilon Greenstein2009-03-022-0/+607
| | | | | | | | | | | | | Adding "ethtool -d" support. Due to the complexity of the FW and HW, there are a lot of different regions in the chip - to keep the code as clean as possible, the ranges were put in an H file. Some areas cannot be read if the driver is running - so by default, the driver will not access those areas - but any programmer facing a problem will be able to easily manipulate the driver to extract full dump. The full dump can also be used with kernel dump modules in case of kernel panic. Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Debug printsEilon Greenstein2009-03-021-19/+19
| | | | | | | Add the FP index to relevant debug prints and simply beautify some others Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: WhitespaceEilon Greenstein2009-03-022-2/+3
| | | | | Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Loopback support at external PHYEilon Greenstein2009-03-021-3/+3
| | | | | | Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Display BCM8481 FW versionEilon Greenstein2009-03-021-0/+1
| | | | | | Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: BCM8705 has no microcodeEilon Greenstein2009-03-021-4/+3
| | | | | | Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Enable BCM8726 module transmitterEilon Greenstein2009-03-021-5/+1
| | | | | | | | | When 8726 module detection option is disabled, module should be transmitting regardless of invalid read from EEPROM Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Supporting new BCM8726 FWEilon Greenstein2009-03-022-11/+20
| | | | | | | | | Microcode download requires write of another register and read from "Limiting/LRM mode" register before setting Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Calling tx disable unconditionallyEilon Greenstein2009-03-021-4/+2
| | | | | | | | | On unload, the FW assumes that no packets will be sent after the driver sends the FW stop command. To ensure that, the driver must always call netif_tx_disable Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Using DMA engineEilon Greenstein2009-03-022-56/+31
| | | | | | | Using DMA engine (DMAE) to initialize large consecutive memories in the chip Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Missing module parameter descriptionEilon Greenstein2009-03-021-0/+1
| | | | | Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: napi_poll budget checkEilon Greenstein2009-03-021-4/+18
| | | | | | | | Check the napi_poll budget only when updating it. Also add a comment to explain the rmb Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Unlimited Tx interrupt workEilon Greenstein2009-03-021-7/+4
| | | | | | | The Tx interrupt is very short and there is no need to limit it to a budget Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Add rmb to read status block indices on loadEilon Greenstein2009-03-021-0/+4
| | | | | | | Add rmb to read status block indices on load Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Reduce the likelihood of smb_mbEilon Greenstein2009-03-021-7/+8
| | | | | | | | As the comment explains, this smb_mb is needed only if the queue is stopped (which is unlikely) so the barrier can be moved to that location Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Misleading nameEilon Greenstein2009-03-021-3/+3
| | | | | | | | As noted by Ben Hutchings <bhutchings@solarflare.com>, these are the capabilities offsets and not the ID itself Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnx2x: Remove redundant smb_mb on unloadEilon Greenstein2009-03-021-2/+0
| | | | | | | | As noted by Ben Hutchings <bhutchings@solarflare.com>, these smb_mb are not needed Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* typhoon: repair firmware loadingDavid Dillow2009-03-021-54/+83
| | | | | | | | | | | | The conversion to avoid using pci_alloc_consistent() broke the firmware load process, as well as added an order-4 kmalloc and doubled the memory usage of the firmware image. Go back to loading a page at a time. Also, since the user can now give us utter garbage for firmware, do a cursory validation so we don't try to load just anything. Signed-off-by: David Dillow <dave@thedillows.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* e1000: fix unmap bugJesse Brandeburg2009-03-021-24/+27
| | | | | | | | | | | | | | This is in reference to the issue shown in kerneloops (search e1000 unmap) The e1000 transmit code was calling pci_unmap_page on dma handles that it might have called pci_map_single on. Same bug as e1000e Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* e1000e: fix unmap bugJesse Brandeburg2009-03-021-34/+28
| | | | | | | | | | | | | This is in reference to https://bugzilla.redhat.com/show_bug.cgi?id=484494 Also addresses issue show in kerneloops The e1000e transmit code was calling pci_unmap_page on dma handles that it might have called pci_map_single on. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Acked-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* igb: remove skb_orphan callsAlexander Duyck2009-03-021-11/+0
| | | | | | | | | | | | | | | | | Remove skb_orphan call from igb driver as it can cause multiple issues due to the fact that it is calling the desctructor and removing the skb from the socket prior to transmission. The call was added to improve performance but did so by allowing the skb to be removed from the socket which gave the socket more window space to transmit. The performance gain is not worth the extra problems that this kind of workaround can introduce as this could lead to a potential DoS if a UDP stream decided to monopolize the transmit path. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* skbuff.h: fix timestamps kernel-docRandy Dunlap2009-03-021-4/+2
| | | | | | | | | | | Fix skbuff.h kernel-doc for timestamps: must include "struct" keyword, otherwise there are kernel-doc errors: Error(linux-next-20090227//include/linux/skbuff.h:161): cannot understand prototype: 'struct skb_shared_hwtstamps ' Error(linux-next-20090227//include/linux/skbuff.h:177): cannot understand prototype: 'union skb_shared_tx ' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Add support for SFN4112F SFP+ reference designBen Hutchings2009-03-022-0/+63
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Clean up LED controlBen Hutchings2009-03-023-12/+11
| | | | | | | | | | Reinitialise LEDs after overriding them for identification. Rename set_fault_led method to set_id_led since we always use it for NIC identification and not faults. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Delete unused efx_blinker::led_num fieldBen Hutchings2009-03-022-3/+0
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Add support for QT2025C PHYBen Hutchings2009-03-024-10/+91
| | | | | | | | | This is a new PHY supporting SFP+ modules, used in the SFN4112F reference design. It is similar to the QT2022C2 and shares much of its support code. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Fix reporting of PHY idBen Hutchings2009-03-023-7/+22
| | | | | | | | | | | Shuffle bits of the OUI into the conventional written order. Replace PHY id component macros with functions. Zero-pad PHY id components in log messages. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Remove "XFP" from log messages that are not specific to XFPBen Hutchings2009-03-021-4/+4
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: SFT9001/SFN4111T: Check PHY boot status during board initialisationBen Hutchings2009-03-023-40/+72
| | | | | | | | | | | During SFN4111T initialisation, check whether the PHY boot status indicates a bad firmware checksum. If so, prepare to reflash rather than continuing with normal initialisation. Remove redundant PHY boot status check from tenxpress_phy_init(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: Fix test for MDIO read failureBen Hutchings2009-03-021-6/+7
| | | | | | | | | | | Commit 27dd2caca4eabe7c13a052b7456495ba75535e6a changed mdio_clause45_check_mmds() to read both DEVS0 and DEVS1 registers and to combine their values into an unsigned 32-bit mask. This made the following test for a negative (failure) value useless. Fix it to check whether either read failed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sfc: SFT9001: Include non-breaking cable diagnostics in online self-testsBen Hutchings2009-03-021-21/+24
| | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: implement RX reorder supportInaky Perez-Gonzalez2009-03-025-30/+723
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the device to give the driver RX data with reorder information. When that is done, the device will indicate the driver if a packet has to be held in a (sorted) queue. It will also tell the driver when held packets have to be released to the OS. This is done to improve the WiMAX-protocol level retransmission support when missing frames are detected. The code docs provide details about the implementation. In general, this just hooks into the RX path in rx.c; if a packet with the reorder bit in the RX header is detected, the reorder information in the header is extracted and one of the four main reorder operations are executed. In one case (queue) no packet will be delivered to the networking stack, just queued, whereas in the others (reset, update_ws and queue_update_ws), queued packet might be delivered depending on the window start for the specific queue. The modifications to files other than rx.c are: - control.c: during device initialization, enable reordering support if the rx_reorder_disabled module parameter is not enabled - driver.c: expose a rx_reorder_disable module parameter and call i2400m_rx_setup/release() to initialize/shutdown RX reorder support. - i2400m.h: introduce members in 'struct i2400m' needed for implementing reorder support. - linux/i2400m.h: introduce TLVs, commands and constant definitions related to RX reorder Last but not least, the rx reorder code includes an small circular log where the last N reorder operations are recorded to be displayed in case of inconsistency. Otherwise diagnosing issues would be almost impossible. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax: replace uses of __constant_{endian}Harvey Harrison2009-03-021-4/+6
| | | | | | | | | | Base versions handle constant folding now. Edited by Inaky to fix conflicts due to changes in netdev.c Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: support extended data RX protocol (no need to reallocate skbs)Inaky Perez-Gonzalez2009-03-025-33/+234
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newer i2400m firmwares (>= v1.4) extend the data RX protocol so that each packet has a 16 byte header. This header is mainly used to implement host reordeing (which is addressed in later commits). However, this header also allows us to overwrite it (once data has been extracted) with an Ethernet header and deliver to the networking stack without having to reallocate the skb (as it happened in fw <= v1.3) to make room for it. - control.c: indicate the device [dev_initialize()] that the driver wants to use the extended data RX protocol. Also involves adding the definition of the needed data types in include/linux/wimax/i2400m.h. - rx.c: handle the new payload type for the extended RX data protocol. Prepares the skb for delivery to netdev.c:i2400m_net_erx(). - netdev.c: Introduce i2400m_net_erx() that adds the fake ethernet address to a prepared skb and delivers it to the networking stack. - cleanup: in most instances in rx.c, the variable 'single' was renamed to 'single_last' for it better conveys its meaning. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers2009-03-023-3/+3
| | | | | | | | | Cc: inaky.perez-gonzalez@intel.com Cc: linux-wimax@intel.com Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: allow control of the base-station idle mode timeoutInaky Perez-Gonzalez2009-03-027-8/+221
| | | | | | | | | | | | | | | | | | | | | | For power saving reasons, WiMAX links can be put in idle mode while connected after a certain time of the link not being used for tx or rx. In this mode, the device pages the base-station regularly and when data is ready to be transmitted, the link is revived. This patch allows the user to control the time the device has to be idle before it decides to go to idle mode from a sysfs interace. It also updates the initialization code to acknowledge the module variable 'idle_mode_disabled' when the firmware is a newer version (upcoming 1.4 vs 2.6.29's v1.3). The method for setting the idle mode timeout in the older firmwares is much more limited and can be only done at initialization time. Thus, the sysfs file will return -ENOSYS on older ones. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: firmware_check() encodes the firmware version in ↵Inaky Perez-Gonzalez2009-03-023-5/+16
| | | | | | | | | | | | | | | | | | | i2400m->fw_version Upcoming modifications will need to test for the running firmware version before activating a feature or not. This is helpful to implement backward compatibility with older firmware versions. Modify i2400m_firmware_check() to encode in i2400m->fw_version the major and minor version numbers of the firmware interface. As well, move the call to be done as the very first operation once we have communication with the device during probe() [in __i2400m_dev_start()]. This is needed so any operation that is executed afterwards can determine which fw version it is talking to. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: drop support for deprecated major fw interface, add for new minorInaky Perez-Gonzalez2009-03-021-9/+5
| | | | | | | | | | | | | | | Firmware interface version 8.x.x has long been deprecated and is no longer supported (nor available, as it is a preproduction firmware), so it can be safely dropped. Add support for firmware interface v9.2.x (current is 9.1.x). Firmware version 9.2.x is backwards compatible with 9.1.x; new features are enabled if switches are pressed to turn them on. Forthcoming commits to the driver will start pressing those switches when the firmware interface supports it. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wimax/i2400m: add the ability to fallback to other firmware files if the ↵Inaky Perez-Gonzalez2009-03-024-35/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | default is not there In order to support backwards compatibility with older firmwares when a driver is updated by a new kernel release, the i2400m bus drivers can declare a list of firmware files they can work with (in general these will be each a different version). The firmware loader will try them in sequence until one loads. Thus, if a user doesn't have the latest and greatest firmware that a newly installed kernel would require, the driver would fall back to the firmware from a previous release. To support this, the i2400m->bus_fw_name is changed to be a NULL terminated array firmware file names (and renamed to bus_fw_names) and we add a new entry (i2400m->fw_name) that points to the name of the firmware being currently used. All code that needs to print the firmware file name uses i2400m->fw_name instead of the old i2400m->bus_fw_name. The code in i2400m_dev_bootstrap() that loads the firmware is changed with an iterator over the firmware file name list that tries to load each form user space, using the first one that succeeds in request_firmware() (and thus stopping the iteration). The USB and SDIO bus drivers are updated to take advantage of this and reflect which firmwares they support. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* dccp: Do not let initial option overhead shrink the MPSGerrit Renker2009-03-022-2/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a problem caused by the overlap of the connection-setup and established-state phases of DCCP connections. During connection setup, the client retransmits Confirm Feature-Negotiation options until a response from the server signals that it can move from the half-established PARTOPEN into the OPEN state, whereupon the connection is fully established on both ends (RFC 4340, 8.1.5). However, since the client may already send data while it is in the PARTOPEN state, consequences arise for the Maximum Packet Size: the problem is that the initial option overhead is much higher than for the subsequent established phase, as it involves potentially many variable-length list-type options (server-priority options, RFC 4340, 6.4). Applying the standard MPS is insufficient here: especially with larger payloads this can lead to annoying, counter-intuitive EMSGSIZE errors. On the other hand, reducing the MPS available for the established phase by the added initial overhead is highly wasteful and inefficient. The solution chosen therefore is a two-phase strategy: If the payload length of the DataAck in PARTOPEN is too large, an Ack is sent to carry the options, and the feature-negotiation list is then flushed. This means that the server gets two Acks for one Response. If both Acks get lost, it is probably better to restart the connection anyway and devising yet another special-case does not seem worth the extra complexity. The result is a higher utilisation of the available packet space for the data transmission phase (established state) of a connection. The patch (over-)estimates the initial overhead to be 32*4 bytes -- commonly seen values were around 90 bytes for initial feature-negotiation options. It uses sizeof(u32) to mean "aligned units of 4 bytes". For consistency, another use of 4-byte alignment is adapted. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* dccp: Minimise header option overhead in setting the MPSGerrit Renker2009-03-022-8/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves a long-standing FIXME to dynamically update the Maximum Packet Size depending on actual options usage. It uses the flags set by the feature-negotiation infrastructure to compute the required header option size. Most options are fixed-size, a notable exception are Ack Vectors (required currently only by CCID-2). These can have any length between 3 and 1020 bytes. As a result of testing, 16 bytes (2 bytes for type/length plus 14 Ack Vector cells) have been found to be sufficient for loss-free situations. There are currently no CCID-specific header options which may appear on data packets, thus it is not necessary to define a corresponding CCID field as suggested in the old comment. Further changes: ---------------- Adjusted the type of 'cur_mps' to match the unsigned return type of the function. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
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