- 17 Jun, 2016 35 commits
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David S. Miller authored
Shrikrishna Khare says: ==================== vmxnet3: upgrade to version 3 vmxnet3 emulation has recently added several new features which includes support for new commands the driver can issue to emulation, change in descriptor fields etc. This patch series extends the vmxnet3 driver to leverage these new features. Compatibility is maintained using existing vmxnet3 versioning mechanism as follows: - new features added to vmxnet3 emulation are associated with new vmxnet3 version viz. vmxnet3 version 3. - emulation advertises all the versions it supports to the driver. - during initialization, vmxnet3 driver picks the highest version number supported by both the emulation and the driver and configures emulation to run at that version. In particular, following changes are introduced: Patch 1: Some command definitions from previous vmxnet3 versions are missing. This patch adds those definitions before moving to vmxnet3 version 3. It also fixes copyright info and maintained by. Patch 2: This patch introduces generalized command interface which allows for easily adding new commands that vmxnet3 driver can issue to the emulation. Further patches in this series make use of this facility. Patch 3: Transmit data ring buffer is used to copy packet headers or small packets. It is a fixed size buffer. This patch extends the driver to allow variable sized transmit data ring buffer. Patch 4: This patch introduces receive data ring buffer - a set of small sized buffers that are always mapped by the emulation. This avoids memory mapping/unmapping overhead for small packets. Patch 5: The vmxnet3 emulation supports a variety of coalescing modes. This patch extends vmxnet3 driver to allow querying and configuring these modes. Patch 6: In vmxnet3 version 3, the emulation added support for the vmxnet3 driver to communicate information about the memory regions the driver will use for rx/tx buffers. This patch exposes related commands to the driver. Patch 7: With all vmxnet3 version 3 changes incorporated in the vmxnet3 driver, with this patch, the driver can configure emulation to run at vmxnet3 version 3. Changes in v2: - v1 patch used special values of rx-usecs to differentiate between coalescing modes. v2 uses relevant fields in struct ethtool_coalesce to choose modes. Also, a new command VMXNET3_CMD_GET_COALESCE is introduced which allows driver to query the device for default coalescing configuration. Changes in v3: - fix subject line to use vmxnet3: instead of Driver:Vmxnet3 - resubmit when net-next is open Changes in v4: - Address code review comments by Ben Hutchings: remove unnecessary memset from vmxnet3_get_coalesce. Changes in v5: - Updated all the patches to add detailed commit messages. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Shrikrishna Khare authored
With all vmxnet3 version 3 changes incorporated in the vmxnet3 driver, the driver can configure emulation to run at vmxnet3 version 3, provided the emulation advertises support for version 3. Signed-off-by:
Shrikrishna Khare <skhare@vmware.com> Signed-off-by:
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Shrikrishna Khare authored
In vmxnet3 version 3, the emulation added support for the vmxnet3 driver to communicate information about the memory regions the driver will use for rx/tx buffers. The driver can also indicate which rx/tx queue the memory region is applicable for. If this information is communicated to the emulation, the emulation will always keep these memory regions mapped, thereby avoiding the mapping/unmapping overhead for every packet. Currently, Linux vmxnet3 driver does not leverage this capability. The feasibility of using this approach for the Linux vmxnet3 driver will be investigated independently and if possible, will be part of a different patch. This patch only exposes the emulation capability to the driver (vmxnet3_defs.h is identical between the driver and the emulation). Signed-off-by:
Guolin Yang <gyang@vmware.com> Signed-off-by:
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Shrikrishna Khare authored
The emulation supports a variety of coalescing modes viz. disabled (no coalescing), adaptive, static (number of packets to batch before raising an interrupt), rate based (number of interrupts per second). This patch implements get_coalesce and set_coalesce methods to allow querying and configuring different coalescing modes. Signed-off-by:
Keyong Sun <sunk@vmware.com> Signed-off-by:
Manoj Tammali <tammalim@vmware.com> Signed-off-by:
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Shrikrishna Khare authored
vmxnet3 driver preallocates buffers for receiving packets and posts the buffers to the emulation. In order to deliver a received packet to the guest, the emulation must map buffer(s) and copy the packet into it. To avoid this memory mapping overhead, this patch introduces the receive data ring - a set of small sized buffers that are always mapped by the emulation. If a packet fits into the receive data ring buffer, the emulation delivers the packet via the receive data ring (which must be copied by the guest driver), or else the usual receive path is used. Receive Data Ring buffer length is configurable via ethtool -G ethX rx-mini Signed-off-by:
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Shrikrishna Khare authored
vmxnet3 driver supports transmit data ring viz. a set of fixed size buffers used by the driver to copy packet headers. Small packets that fit these buffers are copied into these buffers entirely. Currently this buffer size of fixed at 128 bytes. This patch extends transmit data ring implementation to allow variable length transmit data ring buffers. The length of the buffer is read from the emulation during initialization. Signed-off-by:
Sriram Rangarajan <rangarajans@vmware.com> Signed-off-by:
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Shrikrishna Khare authored
Shared memory is used to exchange information between the vmxnet3 driver and the emulation. In order to request emulation to perform a task, the driver first populates specific fields in this shared memory and then issues corresponding command by writing to the command register(CMD). The layout of the shared memory was defined by vmxnet3 version 1 and cannot be extended for every new command without breaking backward compatibility. To address this problem, in vmxnet3 version 3, the emulation repurposed a reserved field in the shared memory to represent command information instead. For new commands, the driver first populates the command information field in the shared memory and then issues the command. The emulation interprets the data written to the command information depending on the type of the command. This patch exposes this capability to the driver. Signed-off-by:
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Shrikrishna Khare authored
vmxnet3 is currently at version 2, but some command definitions from previous vmxnet3 versions are missing. Add those definitions before moving to version 3. Also, introduce utility macros for vmxnet3 version comparison and update Copyright information and Maintained by. Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== s390: qeth patches here are patches for the s390 qeth driver for net-next: Patch 01 is a minor improvement for the bridgeport code in qeth. Patches 02-07 take care about scatter/gather handling in qeth. Patch 08 improves handling of multicast IP addresses in the qeth layer3 discipline. Patches 09-11 improve netdev features related functions in qeth. Patch 12 implements an outbound queue restriction for HiperSockets. Patch 13 fixes a wrong indentation in qeth_l3_main.c causing a warning with gcc-6. ==================== Signed-off-by: -
Sebastian Ott authored
gcc-6 warns about obviously wrong indentation: drivers/s390/net/qeth_l3_main.c: In function 'qeth_l3_arp_query': drivers/s390/net/qeth_l3_main.c:2315:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (copy_to_user(udata, qinfo.udata, 4)) ^~ drivers/s390/net/qeth_l3_main.c:2317:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' goto free_and_out; ^~~~ Although this particular case is harmless, fix the indentation to get rid of that warning and improve readability. Signed-off-by:Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Hans Wippel authored
On HiperSockets only outbound queues 0 to 2 are available for unicast packets. Current Priority Queuing implementation in the qeth driver puts outgoing packets in outbound queues 0 to 3. This puts outgoing unicast packets into outbound queue 2 instead of outbound queue 3 when using Priority Queuing on a HiperSocket. Additionally, the default outbound queue cannot be set to outbound queue 3 on HiperSockets. Signed-off-by:
Hans Wippel <hwippel@linux.vnet.ibm.com> Signed-off-by:
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Hans Wippel authored
The function set_features is called to configure network device features on the hardware. If errors occur, the network device features should reflect the changed hardware state and the function should return an error in order to notify the user. In case of an error, the current implementation does not necessarily save the changed hardware state in the network device features before an error is returned. This patch improves error handling by saving features, that could be changed, to the network device features before returning an error. If the device is not running, an additional check in fix_features removes features, that require hardware changes, before they are passed to set_features. Thus, the corresponding check was removed in set_features. Signed-off-by:
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Hans Wippel authored
Network device features indicate the capabilities of network devices (e.g., TX checksum offloading and TSO) and their configuration state. Additional network device features (vlan_features) indicate for each network device, which capabilities can be used on VLAN devices, that are configured on the respective base network device. In the current qeth implementation, network device features are only set for the base network devices and not for the VLAN devices. Thus, features like TX checksum offloading cannot be used on VLAN devices. This patch adds network device features to vlan_features, so they can be used by VLAN devices. Signed-off-by:
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Thomas Richter authored
This patch introduces a common set of fix_features and set_features functions for layer 2 and layer 3. The RX, TX and TSO offload functionality on the OSA card is enabled using ethtool at user's request and not at device initialization as done before. For layer 3 the RX checksum offloading is disabled at device initialization time. Signed-off-by:
Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by:
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Lakhvich Dmitriy authored
In layer3 mode of the qeth driver, multicast IP addresses from struct net_device and other type of IP addresses from other sources require mapping to the OSA-card. This patch simplifies the IP address mapping logic, and changes imple- mentation of ndo_set_rx_mode callback and ip notifier events. Addresses are stored in private hashtables instead of lists now. It allows hardware registration/removal for new/deleted multicast addresses only. Signed-off-by:
Lakhvich Dmitriy <ldmitriy@ru.ibm.com> Signed-off-by:
Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com> Reviewed-by:
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Eugene Crosser authored
When skb data touches too many pages, skb_linearize() is called opportunistically in the hope that less pages will be required for a big linear buffer than for multiple fragments. This patch intoduces a separate counter in ethtool statistics structure representing _failed_ linearization attempts. Signed-off-by:
Thomas Richter <tmricht@de.ibm.com> Signed-off-by:
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Eugene Crosser authored
Set scatter/gather ON by default on OSA, for both layer 2 and layer 3 modes. We always use fragmentation over QDIO anyway, so let the upper layers of the stack take advantage of that. Signed-off-by:
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Eugene Crosser authored
The patch enables NETIF_F_SG flag for OSA in layer 2 mode. It also adds performance accounting for fragmented sends, adds a conditional skb_linearize() attempt if the skb had too many fragments for QDIO SBAL, and fills netdevice->gso_* attributes. Signed-off-by:
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Eugene Crosser authored
Use QETH_MAX_BUFFER_ELEMENTS(card) instead of constant 16. Also fill gso_max_segs and gso_min_segs. Signed-off-by:
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Eugene Crosser authored
Make conditions under which TSO is activated more stringent. Make calculation of SBALEs required for the skb more accurate. Signed-off-by:
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Eugene Crosser authored
Rewrite the functions that calculate the required number of buffer elements needed to represent SKB data, to make them hopefully more comprehensible. Plus a few cleanups. Signed-off-by:
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Eugene Crosser authored
Having understood the semantics of BRIDGEPORT error code 0x0010, we can introduce a meaningful error message. Signed-off-by:
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Arnd Bergmann authored
Modern C standards expect the '__inline__' keyword to come before the return type in a declaration, and we get a couple of warnings for this with "make W=1" in the xfrm{4,6}_policy.c files: net/ipv6/xfrm6_policy.c:369:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] static int inline xfrm6_net_sysctl_init(struct net *net) net/ipv6/xfrm6_policy.c:374:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] static void inline xfrm6_net_sysctl_exit(struct net *net) net/ipv4/xfrm4_policy.c:339:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] static int inline xfrm4_net_sysctl_init(struct net *net) net/ipv4/xfrm4_policy.c:344:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] static void inline xfrm4_net_sysctl_exit(struct net *net) Signed-off-by:Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Arnd Bergmann authored
Modern C standards expect the '__inline__' keyword to come before the return type in a declaration, and we get a warning for this with "make W=1": drivers/net/ethernet/freescale/gianfar.c:2278:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] Signed-off-by:
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Arnd Bergmann authored
Modern C standards expect the '__inline__' keyword to come before the return type in a declaration, and we get many warnings for this with "make W=1" because the eicon driver has this in a header file: eicon/divasmain.c:448:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/divasmain.c:453:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/divasmain.c:458:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/divasmain.c:463:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/divasmain.c:468:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/divasmain.c:473:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/platform.h:274:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] eicon/platform.h:280:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] A similar warning gets printed for the diva_os_register_io_port() declaration, because 'register' is interpreted as a keyword instead of a variable name: In file included from eicon/diva_didd.c:21:0: eicon/platform.h:206:1: error: 'register' is not at beginning of declaration [-Werror=old-style-declaration] Signed-off-by:
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Arnd Bergmann authored
Modern C standards expect the '__inline__' keyword to come before the return type in a declaration, and we get a warning for this with "make W=1": drivers/net/hamradio/baycom_par.c:159:1: error: '__inline__' is not at beginning of declaration [-Werror=old-style-declaration] For consistency with other drivers, I'm changing '__inline__' to 'inline' at the same time. Signed-off-by:
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Wei Tang authored
The space is missing after ',', and this will introduce much more noise when checking patch around. Signed-off-by:
Wei Tang <tangwei@cmss.chinamobile.com> Signed-off-by:
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Wei Tang authored
This patch fixes the checkpatch.pl error to dev.c: ERROR: do not initialise statics to 0 Signed-off-by:
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Arnd Bergmann authored
We get a warning for tlan_handle_tx_eoc when building with "make W=1" drivers/net/ethernet/ti/tlan.c: In function 'tlan_handle_tx_eoc': drivers/net/ethernet/ti/tlan.c:1647:59: error: parameter 'host_int' set but not used [-Werror=unused-but-set-parameter] static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) This is harmless, but removing the unused assignment lets us avoid the warning with no downside. Signed-off-by:
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Arnd Bergmann authored
We get a warning for qlcnic_83xx_get_mac_address when building with "make W=1": drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c: In function 'qlcnic_83xx_get_mac_address': drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c:2156:8: error: parameter 'function' set but not used [-Werror=unused-but-set-parameter] Clearly this is harmless, but there is also no point for setting the variable, so we can simply remove the assignment. Signed-off-by:
Rajesh Borundia <rajesh.borundia@qlogic.com> Signed-off-by:
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Arnd Bergmann authored
The b53 dsa register access confusingly uses __raw register accessors when both the CPU and the device are big-endian, but it uses little- endian accessors when the same device is used from a little-endian CPU, which makes no sense. This uses normal accessors in device-endianess all the time, which will work in all four combinations of register and CPU endianess, and it will have the same barrier semantics in all cases. This also seems to take care of a (false positive) warning I'm getting: drivers/net/dsa/b53/b53_mmap.c: In function 'b53_mmap_read64': drivers/net/dsa/b53/b53_mmap.c:109:10: error: 'hi' may be used uninitialized in this function [-Werror=maybe-uninitialized] *val = ((u64)hi << 32) | lo; I originally planned to submit another patch for that warning and did this one as a preparation cleanup, but it does seem to be sufficient by itself. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Simon Horman authored
This appears to be necessary and sufficient to provide MPLS in GRE (RFC4023) support. This can be used by establishing an ipgre tunnel device and then routing MPLS over it. The following example will forward MPLS frames received with an outermost MPLS label 100 over tun1, a GRE tunnel. The forwarded packet will have the outermost MPLS LSE removed and two new LSEs added with labels 200 (outermost) and 300 (next). ip link add name tun1 type gre remote 10.0.99.193 local 10.0.99.192 ttl 225 ip link set up dev tun1 ip addr add 10.0.98.192/24 dev tun1 ip route sh echo 1 > /proc/sys/net/mpls/conf/eth0/input echo 101 > /proc/sys/net/mpls/platform_labels ip -f mpls route add 100 as 200/300 via inet 10.0.98.193 ip -f mpls route sh Also remove unnecessary braces. Reviewed-by:
Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by:
Simon Horman <simon.horman@netronome.com> Acked-by:
Robert Shearman <rshearma@brocade.com> Signed-off-by:
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hayeswang authored
In set_speed(), BMCR_RESET would be set when the flag of PHY_RESET is set. Use BMCR_RESET to replace testing the flag of PHY_RESET. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> Signed-off-by:
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Philippe Reynes authored
There are two generics functions phy_ethtool_{get|set}_link_ksettings, so we can use them instead of defining the same code in the driver. Signed-off-by:Philippe Reynes <tremyfr@gmail.com> Signed-off-by:
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Philippe Reynes authored
The private structure contain a pointer to phydev, but the structure net_device already contain such pointer. So we can remove the pointer phydev in the private structure, and update the driver to use the one contained in struct net_device. Signed-off-by:
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- 16 Jun, 2016 5 commits
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David S. Miller authored
Vincent Palatin says: ==================== net: stmmac: dwmac-rk: fixes for Wake-on-Lan on RK3288 In order to support Wake-On-Lan when using the RK3288 integrated MAC (with an external RGMII PHY), we need to avoid shutting down the regulator of the external PHY when the MAC is suspended as it's currently done in the MAC platform code. As a first step, create independant callbacks for suspend/resume rather than re-using exit/init callbacks. So the dwmac platform driver can behave differently on suspend where it might skip shutting the PHY and at module unloading. Then update the dwmac-rk driver to switch off the PHY regulator only if we are not planning to wake up from the LAN. Finally add the PMT interrupt to the MAC device tree configuration, so we can wake up the core from it when the PHY has received the magic packet. ==================== Signed-off-by: -
Vincent Palatin authored
In order to use Wake-on-Lan on RK3288 integrated MAC, we need to wake-up the CPU on the PMT interrupt when the MAC and the PHY are in low power mode. Adding the interrupt declaration. Signed-off-by:
Vincent Palatin <vpalatin@chromium.org> Signed-off-by:
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Vincent Palatin authored
When suspending the machine, do not shutdown the external PHY by cutting its regulator in the mac platform driver suspend code if Wake-on-Lan is enabled, else it cannot wake us up. In order to do this, split the suspend/resume callbacks from the init/exit callbacks, so we can condition the power-down on the lack of need to wake-up from the LAN but do it unconditionally when unloading the module. Signed-off-by:
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Vincent Palatin authored
Let the stmmac platform drivers provide dedicated suspend and resume callbacks rather than always re-using the init and exits callbacks. If the driver does not provide the suspend or resume callback, we fall back to the old behavior trying to use exit or init. This allows a specific platform to perform only a partial power-down on suspend if Wake-on-Lan is enabled but always perform the full shutdown sequence if the module is unloaded. Signed-off-by:
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Xin Long authored
Commit d46e416c ("sctp: sctp should change socket state when shutdown is received") may set sk_state CLOSING in sctp_sock_migrate, but inet_accept doesn't allow the sk_state other than ESTABLISHED/ CLOSED for sctp. So we will change sk_state to CLOSED, instead of CLOSING, as actually sk is closed already there. Fixes: d46e416c ("sctp: sctp should change socket state when shutdown is received") Reported-by:
Ye Xiaolong <xiaolong.ye@intel.com> Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
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