Commit Graph

1404 Commits

Author SHA1 Message Date
Nelson Escobar
e3725e7f55 net/enic: fix crash on error interrupt
When enic's interrupt handler is called indicating an error, it scans
through the receive queues (RQs) on the adapter looking for errors.
But since the inclusion of rx scatter, some of the RQs may not be in
use, and you shouldn't check them for errors.

Fixes: 856d7ba7ed ("net/enic: support scattered Rx")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2016-07-15 23:37:13 +02:00
Nelson Escobar
d142e1ac10 net/enic: fix calculation of truncated packets
The calculation of truncated packets didn't take into account packet
errors due to the adapter not having buffers, causing both the
ipackets, and imissed counts to be wrong if such errors occurred.  In
order to properly calculate the number of packets truncated, we need
to subtract the count of errors due to no buffers.

Fixes: c44d9f01ad ("net/enic: count truncated packets")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
2016-07-15 23:37:13 +02:00
John Daley
837e68ae94 net/enic: fix queue stop and start
The exported device start and stop functions where not setting the queue
states to RTE_ETH_QUEUE_STATE_STARTED and RTE_ETH_QUEUE_STATE_STOPPED.
After starting the device, the RTE queue stop function would not call
the enic queue stop function since queue was already marked as stopped.

Put queue state updates in the lower level queue start/stop functions
which are called by both device and queue start/stop functions.

Fixes: fefed3d1e6 ("enic: new driver")

Reviewed-by: Nelson Escobar <neescoba@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
2016-07-15 23:37:13 +02:00
John Daley
954828b8be net/enic: fix crash when changing number of queues
The check that all Tx and Rx queues were set up was not
adequate when reconfiguring with a different number of
queues. Only the number of completion queues (CQs) was
being used to make the determination, but the CQ array
is shared between the underlying Rx and Tx queues.

Check that the internal Rx, Tx and CQs are all set up
before completing port configuration.

Fixes: fefed3d1e6 ("enic: new driver")

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2016-07-15 23:37:13 +02:00
John Daley
0473ffe338 net/enic: increment filter failure counter
One instance of a filter add failure was not incrementing the
the fail counter.

Fixes: 4c2c7bf41f ("net/enic: fix negative array index write")

Signed-off-by: John Daley <johndale@cisco.com>
2016-07-15 23:37:13 +02:00
John Daley
da24f6f658 net/enic: decrement Tx mbuf reference count before recycling
In the burst Tx cleanup function, the reference count in mbufs
returned to the pool should to be decremented before they are
returned. Decrementing is not done by rte_mempool_put_bulk()
so it must be done separately using __rte_pktmbuf_prefree_seg().

Also when returning unsent buffers when the device is stopped
use rte_mbuf_free_seg() instead of rte_mempool_put() so that
reference counts are properly decremented.

Fixes: 36935afbc5 ("net/enic: refactor Tx mbuf recycling")

Reviewed-by: Nelson Escobar <neescoba@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
2016-07-15 23:37:13 +02:00
John Daley
d0c98d9e19 net/enic: remove internal driver version
The enic PMD code has diverged from code that was once
shared with the enic kernel mode driver for performance
reasons. It is confusing and misleading to print the
internal version number. Remove it.

Fixes: fefed3d1e6 ("enic: new driver")

Signed-off-by: John Daley <johndale@cisco.com>
2016-07-15 23:37:13 +02:00
Olga Shern
cd8ec06ac0 net/mlx5: work around gcc error
RHEL 7.1's GCC for POWER8 reports the following error in one rte_memcpy()
macro call by mlx5:

 error: array subscript is above array bounds [-Werror=array-bounds]

It appears to be a GCC bug which can be worked around by making parentheses
more explicit.

Signed-off-by: Olga Shern <olgas@mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-07-15 23:01:15 +02:00
Xiao Wang
ddc592ede8 net/fm10k: fix FTAG mode with multiple queues
In multi-queue + FTAG use case, we need to turn tx_ftag_en on for all
the Tx queues.

Fixes: 7958b1310d ("fm10k: enable FTAG based forwarding")

Reported-by: Ricky Li <ricky.li@intel.com>
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
2016-07-15 22:58:18 +02:00
Jingjing Wu
83453b84b9 net/i40e: revert VLAN filtering fix
This reverts commit 4761f57d58.
Introducing VLAN table by adding VLAN adminq command will cause NIC's
throughput drop obviously. It's a hardware issue.
With this revert, VLAN filtering can only work when promiscuous mode
is disabled.

Reverts: 4761f57d58 ("net/i40e: fix VLAN filtering in promiscuous mode")

Reported-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by : Jing Chen <jing.d.chen@intel.com>
2016-07-15 22:31:06 +02:00
Maxime Coquelin
9cca159efa net/virtio-user: fix build with gcc 6
The error is reported using test build script:

$ scripts/test-build.sh x86_64-native-linuxapp-gcc
...
drivers/net/virtio/virtio_user_ethdev.c:345:2: error:
  this ‘if’ clause does not guard... [-Werror=misleading-indentation]
  if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1)
    ^~

Fixes: 404bd6bfe3 ("net/virtio-user: fix return value not checked")

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-15 22:15:21 +02:00
David Marchand
cb99057168 net/ena: remove unneeded PCI macro
I suppose this is a remnant of rte_pci_dev_ids.h, just remove this.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:48:49 +02:00
David Marchand
882aa9c6e2 net/bnxt: move PCI device ids to the driver
Moved defines since the driver had no such information.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:47:20 +02:00
David Marchand
ecf5fa864b net/bnx2x: move PCI device ids to the driver
Reused defines from the driver and moved broadcom vendor id macro.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:45:48 +02:00
David Marchand
0b6fe7bd4f net/enic: move PCI device ids to the driver
Moved cisco vendor id since the driver had no such information.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:44:21 +02:00
David Marchand
53c88446d0 net/vmxnet3: move PCI device ids to the driver
Moved vmware device ids macro since the driver had no such information.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:42:54 +02:00
David Marchand
98dd7ad4da net/virtio: move PCI device ids to the driver
Reused defines from the driver.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-11 17:41:10 +02:00
David Marchand
245421e0c5 net/fm10k: move PCI device ids to the driver
Reused defines from the driver.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:39:44 +02:00
David Marchand
3058891a2b net/i40e: move PCI device ids to the driver
Reused defines from the driver.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:38:14 +02:00
David Marchand
544faf4b82 net/e1000: move em PCI device ids to the driver
Reused defines from the driver and added a Intel vendor id macro for use by
igb later.
Used RTE_PCI_DEVICE in place of RTE_PCI_DEV_ID_DECL* stuff.

igb/igbvf is left as is, waiting for kni/ethtool cleanup.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-07-11 17:36:56 +02:00
Christian Ehrhardt
2bf4c83555 net/bonding: fix exported symbol versioning
The older versions of rte_eth_bond_8023ad_conf_get and
rte_eth_bond_8023ad_setup were available in the old way since 2.0 - at
least according to the map file.

But versioning in the code was set to 16.04.
That breaks compatibility checks for 2.0 on that library.

For example with the dpdk abi checker:
http://people.canonical.com/~paelzer/compat_report.html

To fix, version the old symbols on the 2.0 version as they were
initially added to the map file.

See http://people.canonical.com/~paelzer/compat_report.html

Fixes: dc40f17a ("net/bonding: allow external state machine in mode 4")

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
2016-07-11 14:56:51 +02:00
Ferruh Yigit
dbd8bdfc04 net/virtio: fix 32-bit build with gcc 6
This is for target i686-native-linuxapp-gcc and gcc6,

Compilation error is:

In file included from
  include/rte_mempool.h:77:0, from
  drivers/net/virtio/virtio_rxtx_simple.c:
In function `virtio_xmit_pkts_simple':
  include/rte_memcpy.h:551:2: error:
    array subscript is above array bounds
      rte_mov16((uint8_t *)dst + 1 * 16, (const uint8_t *)src + 1 * 16);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Call stack is as following:

virtio_xmit_pkts_simple
  virtio_xmit_cleanup
    rte_mempool_put_bulk
      rte_mempool_generic_put
        __mempool_generic_put
	  rte_memcpy

The array used as source buffer in virtio_xmit_cleanup (free) is a
pointer array with 32 elements, in 32bit this makes 128 bytes.

in rte_memcpy() implementation, there a code piece as following:
if (size > 256) {
    rte_move128(...);
    rte_move128(...); <--- [1]
    ....
}

The compiler traces the array all through the call stack and knows the
size of array is 128 and generates a warning on above [1] which tries to
access beyond byte 128.
But unfortunately it ignores the "(size > 256)" check.

Giving a hint to compiler that variable "size" is related to the size of
the source buffer fixes compiler warning.

Fixes: 863bfb4744 ("mempool: optimize copy in cache")

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-11 07:41:09 +02:00
Rich Lane
f4e4b1f1f8 net/vhost: fix queue state not reset on destroy
Fixes a bug where rte_eth_vhost_get_queue_event would not return enabled
queues after a guest application restart.

Fixes: ee584e9710 ("vhost: add driver on top of the library")

Signed-off-by: Rich Lane <rich.lane@bigswitch.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-11 04:57:39 +02:00
Jianfeng Tan
3bd60a27e9 net/virtio: fix null pointer dereference
There is a logic bug in this code, that could lead to null pointer
dereference when cvq is NULL. Fix this problem by changing logic
&& to logic ||.

   >> CID 127480:  Null pointer dereferences  (FORWARD_NULL)
   >> Dereferencing null pointer "cvq".
   	if (!cvq && !cvq->vq) {
            ...
        }

Coverity issue: 127480
Fixes: 01ad44fd37 ("net/virtio: split Rx/Tx queue")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-05 14:14:40 +02:00
Jianfeng Tan
542849c09c net/virtio-user: fix string unterminated
When use strcpy() to copy string with length exceeding the last
parameter of strcpy(), it may lead to the destination string
unterminated.

We replaced strncpy with snprintf to make sure it's NULL terminated.

Coverity issue: 127476
Fixes: ce2eabdd43 ("net/virtio-user: add virtual device")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-05 13:30:25 +02:00
Jianfeng Tan
14f06474b8 net/virtio-user: fix resource leaks
The return value by rte_kvargs_parse is not free(d), which leads
to memory leak.

Coverity issue: 127482
Fixes: ce2eabdd43 ("net/virtio-user: add virtual device")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-05 13:30:24 +02:00
Jianfeng Tan
80ceb374e2 net/virtio-user: fix string overflow
When parsing /proc/self/maps to get hugepage information, the string
was being copied with strcpy(), which could, theoretically but in fact
not possiblly, overflow the destination buffer. Anyway, to avoid the
false alarm, we replaced strncpy with snprintf for safely copying the
strings.

Coverity issue: 127484
Fixes: 6a84c37e39 ("net/virtio-user: add vhost-user adapter layer")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-05 13:30:24 +02:00
Jianfeng Tan
404bd6bfe3 net/virtio-user: fix return value not checked
When return values of function calls are not checked, Coverity will
report errors like:

    if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1)
    >>>     CID 127477:    (CHECKED_RETURN)
    >>>     Calling "rte_kvargs_process" without checking return value
            (as is done elsewhere 25 out of 30 times).
         		rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PATH,
         				   &get_string_arg, &path);

Coverity issue: 127477, 127478
Fixes: ce2eabdd43 ("net/virtio-user: add virtual device")
Fixes: 6a84c37e39 ("net/virtio-user: add vhost-user adapter layer")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-05 13:30:00 +02:00
Jianfeng Tan
17450351ff net/virtio-user: fix build on Suse 11
On some older systems, such as SUSE 11, the compiling error shows
as:
   .../dpdk/drivers/net/virtio/virtio_user/virtio_user_dev.c:67:22:
         error: ‘O_CLOEXEC’ undeclared (first use in this function)

The fix is to use EFD_CLOEXEC, which is defined in sys/eventfd.h,
instead of O_CLOEXEC which needs _GNU_SOURCE defined on some old
systems.

Fixes: 37a7eb2ae8 ("net/virtio-user: add device emulation layer")

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-07-04 04:08:41 +02:00
Jan Medala
5e02e19eb1 net/ena: fix unneeded doorbell submission
Avoid submitting doorbell when:
* no packets have been submitted to TX
* no free resources have been submitted while RX

Sending doorbell without actual work to be performed by device
violates ENA specification and can lead to unpredictable behavior.

Fixes: 1173fca25a ("ena: add polling-mode driver")

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 23:03:59 +02:00
Nelson Escobar
620b173ae0 net/enic: fix removing old MAC address when setting new one
enic_set_mac_address() meant to remove the old MAC address before
setting the new one, but accidentally tried removing the new MAC
address before setting the new MAC address.

Fixes: fefed3d1e6 ("enic: new driver")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2016-07-08 22:59:52 +02:00
Nelson Escobar
e5b60cf119 net/enic: fix setting MAC address when a port is restarted
enic_disable() removed the MAC address when a port was shut down but
enic_enable() didn't add the MAC address back when the port was
started again. Move where we set the MAC address for the adapter from
enic_setup_finish() to a enic_enable() so that port restarting works
properly.

Fixes: fefed3d1e6 ("enic: new driver")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2016-07-08 22:59:08 +02:00
Rasesh Mody
0392743c3f net/bnx2x: add xstats
This patch adds support for extended statistics for BNX2X PMD.

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>
Acked-by: Remy Horton <remy.horton@intel.com>
2016-07-08 22:56:38 +02:00
Rasesh Mody
d1216e2229 net/qede: add xstats
This patch adds support for extended statistics for QEDE PMD.

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>
Acked-by: Remy Horton <remy.horton@intel.com>
2016-07-08 22:55:19 +02:00
Nélio Laranjeiro
a1bdb71a32 net/mlx5: fix crash in Rx
Fixed issue could occur when Mbuf starvation happens in a middle of
reception of a segmented packet. In such a situation, the PMD has to
release all segments of that packet.  The end condition was wrong
causing it to free an Mbuf still handled by the NIC.

Fixes: 9964b965ad ("net/mlx5: re-add Rx scatter support")

Reported-by: Yongseok Koh <yskoh@mellanox.com>
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-07-08 22:51:10 +02:00
Maxime Leroy
0ac6484625 net/mlx5: fix packet type and offload flags on Rx
In mlx5 rx function, the packet_type and ol_flags mbuf fields are not
properly initialized when no rx offload feature is enabled (checksum, l2
tun checksum, vlan_strip, crc). Thus, these fields can have a value
different of 0 depending on their value when the mbuf was freed.

This can result in an incorrect application behavior if invalid
ol_flags/ptype are set, or memory corruptions if IND_ATTACHED_MBUF is
set in ol_flags.

Fixes: 081f7eae24 ("mlx5: process offload flags only when requested")

Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-07-08 22:51:03 +02:00
Nelson Escobar
ce93d3c36d net/enic: fix resource check failures when bonding devices
The enic PMD was using the same variables in the enic structure to
track two different things.  Initially rq_count, wq_count, cq_count,
and intr_count were set to the values obtained from the VIC adapters
as the maximum resources allocated on the VIC, then in
enic_set_vnic_res(), they were set to the counts of resources actually
used, discarding the initial values. The checks in enic_set_vnic_res()
were technically incorrect if it is called more than once on a port,
which happens when using bonding, but were harmless in practice as the
checks couldn't fail on the second call.

The enic rx-scatter patch misunderstood the subtleties of
enic_set_vnic_res(), and naively added a multiply by two to the
rq_count check. This resulted in the rq_count check failing when
enic_set_vnic_res() was called a second time, ie when using bonding.

This patch adds new variables to the enic structure to track the
maximum resources the VIC is configured to provide so that the
information isn't later lost and calls to enic_set_vnic_res() do
the expected thing.

Fixes: 856d7ba7ed ("net/enic: support scattered Rx")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
2016-07-08 22:51:03 +02:00
Beilei Xing
73f9509e0e net/i40e: fix out-of-bounds access
When calling i40e_flowtype_to_pctype in i40e_get_hash_filter_global_config
and i40e_set_hash_filter_global_config, function i40e_flowtype_to_pctype
will be possibly make an out-of-bounds access, because size of the array
is 15. So check the flow type is valid before calling
i40e_flowtype_to_pctype.
In the process fix other occurances of the same problem

Coverity issue: 37793, 37794
Fixes: 782c8c92f1 ("i40e: add hash configuration")
Fixes: f2b2e2354b ("i40e: split function for hash and flow director input")
Fixes: 98f0557076 ("i40e: configure input fields for RSS or flow director")

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2016-07-08 22:50:59 +02:00
Beilei Xing
b282ea2ada net/i40e: fix dereference before null check
Null-checking vsi suggests that it may be null, but it
has been dereferenced before null-checking. So move the
check to before the assignment statement using the pointer.

Coverity issue: 119265, 119266
Fixes: d0a349409b ("i40e: support AQ based RSS config")
Fixes: 647d1eaf75 ("i40evf: support AQ based RSS config")

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2016-07-08 22:50:53 +02:00
Beilei Xing
3a70ade568 net/i40e: fix log error
The condition, "(pf->flags | I40E_FLAG_VMDQ)" will always be true,
regardless of the value of the flags operand, because I40E_FLAG_VMDQ
is 4ULL - meaning at least one bit will always be set in the result.
That will cause log error when VMDq is disabled.
Since the original intent behind the condition is to check if VMDq
is enabled, fix the code by changing "|" to "&".

Coverity issue: 13219, 13221
Fixes: 4805ed59e9 ("i40e: enhance mac address operations")

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2016-07-08 22:50:46 +02:00
Ajit Khaparde
0bd7e8d5dc net/bnxt: fix broadcast/multicast Rx
Currently we are wrongly setting HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_MCAST
flag in bnxt_hwrm_cfa_l2_set_rx_mask() which is preventing promiscuous
and multicast promiscuous settings from working correctly.
This patch fixes it.

Fixes: 244bc98b0d ("net/bnxt: set L2 Rx mask")

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2016-07-08 22:50:41 +02:00
Jan Medala
0e72dbf2d3 net/ena: fix freeing memory using correct API
Memory zones should be freed using the proper memzone_free function not
rte_free which is for malloc calls.
After allocating memzone it's required to zeroize memory in it, so do so
before storing the handle for later freeing.

Fixes: 9ba7981ec9 ("ena: add communication layer for DPDK")

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jakub Palider <jpa@semihalf.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 15:23:01 +02:00
Jan Medala
3d3edc265f net/ena: make coherent memory allocation NUMA-aware
While allocating (coherent) memory, get information about calling node Id
and pass that as parameter when reserving a memzone.

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jakub Palider <jpa@semihalf.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 15:19:40 +02:00
Jan Medala
c414455701 net/ena: disable readless communication when no HW support
Depending on HW revision readless communcation between host and device
may be unavailable. In that case prevent PMD from setting up readless
communication mechanism.

"readless" refers to ability to read ENA registers without actually
issuing read request from host (x86). Instead, host programs 2 registers
on the device that triggers a DMA from device to host and reports a
register value. However, this functionality is not going to be available
in all types of devices. The decision if this mode is supported or not,
is taken from revision_id in pci configuration space.

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jakub Palider <jpa@semihalf.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 15:19:40 +02:00
Jan Medala
372c1af5ed net/ena: add dedicated memory area for extra device info
Increase maintenance and debug potentiality with dedicated areas of memory
where additional information can be stored by the ENA device.

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jakub Palider <jpa@semihalf.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 15:19:40 +02:00
Jan Medala
6dcee7cde8 net/ena: update ENA comms layer for latest FW
Synchronize ENA communication layer with latest ENA FW version.

Signed-off-by: Alexander Matushevsky <matua@amazon.com>
Signed-off-by: Jakub Palider <jpa@semihalf.com>
Signed-off-by: Jan Medala <jan@semihalf.com>
2016-07-08 15:19:25 +02:00
John Daley
04f976899f net/enic: fix Rx queue init after restarting a device
If you stop, then start a port that had already received some packets,
the NIC could fetch discriptors from the wrong location. This could
effectivly reduce the size of the Rx queue by a random amount and
cause packet drop or reduced performance.

Reset the NIC fetch index to 0 when allocating and posting mbuf
addresses to the NIC.

Fixes: 947d860c82 ("enic: improve Rx performance")

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2016-07-05 15:39:08 +02:00
Nelson Escobar
a3d5f0c92a net/enic: fix Tx crash after restart
If you stop then start a port that had already sent some packets,
there was a segfault due to not resetting the number of completed
sends to zero.

Fixes: a3b1e9551c ("net/enic: streamline mbuf handling in Tx path")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2016-07-05 15:36:23 +02:00
Fengtian Guo
b12a4c911a net/mlx4: add link up/down callback functions
Implement dev_set_link_up and dev_set_link_down device
operations. Code is inspired by mlx5 implementations.

Signed-off-by: Fengtian Guo <fengtian.guo@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-07-05 12:53:50 +02:00
Olivier Matz
3d04e05055 net/mlx5: fix API comment of link set function
Fixes: 62072098b5 ("mlx5: support setting link up or down")

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-07-05 11:55:47 +02:00