Commit Graph

347 Commits

Author SHA1 Message Date
Hyong Youb Kim
4445a0f4c7 net/enic: fix inner packet matching
Inner packet matching is currently buggy in many cases.

1. Mishandling null spec ("match any").
The copy_item functions do nothing if spec is null. This is incorrect,
as all patterns should be appended to the L5 pattern buffer even for
null spec (treated as all zeros).

2. Accessing null spec causing segfault.

3. Not setting protocol fields.
The NIC filter API currently has no flags for "match inner IPv4, IPv6,
UDP, TCP, and so on". So, the driver needs to explicitly set EtherType
and IP protocol fields in the L5 pattern buffer to avoid false
positives (e.g. reporting IPv6 as IPv4).

Instead of keep adding "if inner, do something differently" cases to
the existing copy_item functions, introduce separate functions for
inner packet patterns and address the above issues in those
functions. The changes to the previous outer-packet copy_item
functions are mechanical, due to reduced indentation.

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
593f17668f net/enic: fix endianness in VLAN match
The VLAN fields in the NIC filter use little endian. The VLAN item is
in big endian, so swap bytes.

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
d7316eae1a net/enic: fix VXLAN match
The filter API does not have flags for "match VXLAN". Explicitly set
the UDP destination port and mask in the L4 pattern. Otherwise, UDP
packets with non-VXLAN ports may be falsely reported as VXLAN.

1400 series VIC adapters have hardware VXLAN parsing. The L5 buffer on
the NIC starts with the inner Ethernet header, and the VXLAN header is
now in the L4 buffer following the UDP header. So the VXLAN spec/mask
needs to be in the L4 pattern, not L5. Older models still expect the
VXLAN spec/mask in the L5 pattern. Fix up the L4/L5 patterns
accordingly.

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
af3a16282a net/enic: reset VXLAN port regardless of overlay offload
Currently, the driver resets the vxlan port register only if overlay
offload is enabled. But, the register is actually tied to hardware
vxlan parsing, which is an independent feature and is always enabled
even if overlay offload is disabled. If left uninitialized, it can
affect flow rules that match vxlan. So always reset the port number
when HW vxlan parsing is available.

Fixes: 8a4efd1741 ("net/enic: add handlers to add/delete vxlan port number")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
477959e6ee net/enic: enable limited support for raw flow item
Some apps like VPP use a raw item to match UDP tunnel headers like
VXLAN or GENEVE. The NIC hardware supports such usage via L5 match,
which does pattern match on packet data immediately following the
outer L4 header. Accept raw items for these limited use cases.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
60c6acb43d net/enic: move arguments into struct
There are many copy_item functions, all with the same arguments, which
makes it difficult to add/change arguments. Move the arguments into a
struct to help subsequent commits that will add/fix features. Also
remove self-explanatory verbose comments for these local functions.

These changes are purely mechanical and have no impact on
functionalities.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
5af7af4d6b net/enic: enable limited passthru flow action
Some apps like VPP use PASSTHRU+MARK flow rules to offload packet
matching to the NIC. Just like MARK+RSS used by OVS-DPDK and others,
PASSTHRU+MARK is used to "mark and then receive normally". Recent VIC
adapters support such flow rules, so enable PASSTHRU for this limited
use case.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
e9434f6f60 net/enic: enable limited RSS flow action
Some apps like OVS-DPDK use MARK+RSS flow rules in order to offload
packet matching to the NIC. The RSS action in such flow rules simply
indicates "receive packet normally", not trying to override the port
wide RSS. The action is included in the flow rules simply to terminate
them, as MARK is not a fate-deciding action. And, the RSS action has a
most basic config: default hash, level, types, null key, and identity
queue mapping.

Recent VIC adapters can support these "mark and receive" flow
rules. So, enable support for RSS action for this limited use case.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
4d8e9aa483 net/enic: check for unsupported flow item types
Currently a pattern with an unsupported item type causes segfault,
because the flow handler is using the type as an array index without
checking bounds. Add an explicit check for unsupported item types and
avoid out-of-bound accesses.

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
e7347a8aff net/enic: allow flow mark ID 0
The driver currently accepts mark ID 0 but does not report it in
matching packet's mbuf. For example, the following testpmd command
succeeds. But, the mbuf of a matching IPv4 UDP packet does not have
PKT_RX_FDIR_ID set.

flow create 0 ingress pattern ... actions mark id 0 / queue index 0 / end

The problem has to do with mapping mark IDs (32-bit) to NIC filter
IDs. Filter ID is currently 16-bit, so values greater than 0xffff are
rejected. The firmware reserves filter ID 0 for filters that do not
mark (e.g. steer w/o mark). And, the driver reserves 0xffff for the
flag action. This leaves 1...0xfffe for app use.

It is possible to simply reject mark ID 0 as unsupported. But, 0 is
commonly used (e.g. OVS-DPDK and VPP). So, when adding a filter, set
filter ID = mark ID + 1 to support mark ID 0. The receive handler
subtracts 1 from filter ID to get back the original mark ID.

Fixes: dfbd6a9cb5 ("net/enic: extend flow director support for 1300 series")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
3a1c3cd01b net/enic: fix SCTP match for flow API
The driver needs to explicitly set the protocol number (132) in the IP
header pattern, as the current firmware filter API lacks "match SCTP
packet" flag. Otherwise, the resulting NIC filter may lead to false
positives (i.e. NIC reporting non-SCTP packets as SCTP packets). The
flow director handler does the same (enic_clsf.c).

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
4182ee7f02 net/enic: fix flow director SCTP matching
The firmware filter API does not have flags indicating "match SCTP
packet". Instead, the driver needs to explicitly add an IP match and
set the protocol number (132 for SCTP) in the IP header.

The existing code (copy_fltr_v2) has two bugs.

1. It sets the protocol number (132) in the match value, but not the
mask. The mask remains 0, so the match becomes a wildcard match. The
NIC ends up matching all protocol numbers (i.e. thinks non-SCTP
packets are SCTP).

2. It modifies the input argument (rte_eth_fdir_input). The driver
tracks filters using rte_hash_{add,del}_key(input). So, addding
(RTE_ETH_FILTER_ADD) and deleting (RTE_ETH_FILTER_DELETE) must use the
same input argument for the same filter. But, overwriting the protocol
number while adding the filter breaks this assumption, and causes
delete operation to fail.

So, set the mask as well as protocol value. Do not modify the input
argument, and use const in function signatures to make the intention
clear. Also move a couple function declarations to enic_clsf.c from
enic.h as they are strictly local.

Fixes: dfbd6a9cb5 ("net/enic: extend flow director support for 1300 series")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Hyong Youb Kim
0d0dcd64b8 net/enic: remove unused functions
Remove unused functions. Specifically, vnic_set_rss_key() is
obsolete. enic_{add,del}_vlan() has never been supported in the
firmware. And, remove vnic_rss.c altogether as it becomes empty. These
were discovered by cppcheck.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2019-03-08 17:52:22 +01:00
Bruce Richardson
d23e141ffa build: set RTE_ARCH_64 based on pointer size
Rather than relying on the target machine architecture, use the
size of a pointer from the compiler to determine if we are 64-bits
or not. This allows correct behaviour when you pass -m32 as a compile
option. It also allows us to use this value repeatedly throughout the
repo rather than continually testing for the sizeof(void*).

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Acked-by: Luca Boccassi <bluca@debian.org>
2019-02-26 18:34:28 +01:00
Hyong Youb Kim
9bd48e2d30 net/enic: remove redundant log level check
Fixes: 8d49699534 ("net/enic: support multicast filtering")
Cc: stable@dpdk.org

Suggested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-01-14 17:44:30 +01:00
Hyong Youb Kim
a1c40a3a3b net/enic: remove useless include
libgen.h is not used, so do not include it.

Fixes: fefed3d1e6 ("enic: new driver")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2019-01-14 17:44:30 +01:00
Hyong Youb Kim
8d49699534 net/enic: support multicast filtering
The VIC hardware has 64 MAC filters per vNIC, which can be either
unicast or multicast. Use one half for unicast and the other half for
multicast, as the VIC kernel drivers for Linux and Windows do.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-12-13 17:52:54 +00:00
Hyong Youb Kim
293430677e net/enic: add handler to return firmware version
Cisco VIC adapters run firmware. Add the fw_version_get handler to
help diagnostics.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-12-13 17:52:04 +00:00
Hyong Youb Kim
7f34bb5202 net/enic: release port upon close
Set RTE_ETH_DEV_CLOSE_REMOVE upon probe so rte_eth_dev_close() can
later free port resources including mac_addrs.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-12-13 17:50:26 +00:00
Hyong Youb Kim
7ac790d63b net/enic: fix size check in Tx prepare handler
The current code wrongly assumes that packets are non-TSO and ends up
rejecting large TSO packets. Check non-TSO and TSO max packet sizes
separately.

Fixes: 5a12c38740 ("net/enic: check maximum packet size in Tx prepare handler")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-11-14 00:35:53 +01:00
Hyong Youb Kim
eeef60b0eb net/enic: use macro for attribute weak
Fixes: 8a6ff33d6d ("net/enic: add AVX2 based vectorized Rx handler")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-11-05 15:01:25 +01:00
Ferruh Yigit
9757358342 fix global variable issues
Various fixes related to the global variable usage.

Fixes: 43e610bb85 ("compress/octeontx: introduce octeontx zip PMD")
Fixes: c378f084d6 ("compress/octeontx: add device setup ops")
Fixes: b43ebc65aa ("compress/octeontx: create private xform")
Fixes: b1ce8ebd97 ("eventdev: add PMD callbacks for eth Rx adapter")
Fixes: 3810ae4357 ("eventdev: add interrupt driven queues to Rx adapter")
Fixes: fefed3d1e6 ("enic: new driver")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2018-10-29 02:34:27 +01:00
Hyong Youb Kim
59e657aa0b net/enic: add missing Tx offload flags
The following commit has added a number of existing offload flags such
as PKT_TX_IPV4 and PKT_TX_IPV6 to PKT_TX_OFFLOAD_MASK defined in
rte_mbuf.h. That change breaks the enic driver's Tx prepare handler.

commit ef28cfa73822 ("mbuf: fix Tx offload mask")

The enic driver keeps the supported offload flags in a local variable
(tx_offload_mask), which is strictly a subset of
PKT_TX_OFFLOAD_MASK. This variable is then used to compute the
unsupported flags (tx_offload_notsup_mask), and the Tx prepare handler
(tx_pkt_prepare) uses it to reject packets with unsupported offload
flags.

As is, tx_offload_notsup_mask ends up containing flags like
PKT_TX_IPV4 that are actually supported by the driver, which then
breaks any application that uses checksum offloads and calls the Tx
prepare handler. So add the flags to tx_offload_mask that the driver
supports but were missing in PKT_TX_OFFLOAD_MASK.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-26 22:14:05 +02:00
Hyong Youb Kim
432ed10d81 net/enic: fix supported packet types
The handler for dev_supported_ptypes_get currently returns null when
the vectorized Rx handler is used. It is also missing tunnel packet
types. Add the missing packet types to the supported list, and return
the right list for the vectorized Rx handler.

Fixes: 8a6ff33d6d ("net/enic: add AVX2 based vectorized Rx handler")
Fixes: 93fb21fdbe ("net/enic: enable overlay offload for VXLAN and GENEVE")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-26 22:14:05 +02:00
John Daley
1b4ce87dc5 net/enic: fix counter action
- track whether counter DMAs are active or not so they can be stopped if
  needed before DMA memory is freed
- fix counter DMA shut-down by changing vnic_dev_counter_dma_cfg() to
  take the number of counters to DMA instead of high counter index and
  use num counters = 0 to shut off DMAs
- remove unnecessary checks that DMA counter memory is valid and that
  counter DMAs are in use
- change the minimum DMA period to match what 1400 series adapter is
  capable of
- fix comments and change a couple variable names to make more sense

Fixes: 86df6c4e2f ("net/enic: support flow counter action")

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-10-18 10:24:39 +02:00
Hyong Youb Kim
8a6ff33d6d net/enic: add AVX2 based vectorized Rx handler
Add the vectorized version of the no-scatter Rx handler. It aims to
process 8 descriptors per loop using AVX2 SIMD instructions. This
handler is in its own file enic_rxtx_vec_avx2.c, and makefile and
meson.build are modified to compile it when the compiler supports
AVX2. Under ideal conditions, the vectorized handler reduces
cycles/packet by more than 30%, when compared against the no-scatter
Rx handler. Most implementation ideas come from i40e's AVX2 based
handler, so credit goes to its authors.

At this point, the new handler is meant for field trials, and is not
selected by default. So add a new devarg enable-avx2-rx to allow the
user to request the use of the new handler. When enable-avx2-rx=1, the
driver will consider using the new handler.

Also update the guide doc and introduce the vectorized handler.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:49 +02:00
Hyong Youb Kim
cd4e7b3250 net/enic: move common Rx functions to a new header file
Move a number of Rx functions to the header file so that the avx2
based Rx handler can use them.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:49 +02:00
John Daley
86df6c4e2f net/enic: support flow counter action
Support counter action for 1400 series adapters.

The adapter API for allocating and freeing counters is independent of
the adapter match/action API. If the filter action is requested, a
counter is first allocated and then assigned to the filter, and when
the filter is deleted, the counter must also be deleted.

Counters are DMAd to pre-allocated consistent memory periodically,
controlled by the define VNIC_FLOW_COUNTER_UPDATE_MSECS. The default is
100 milliseconds.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-10-11 18:53:48 +02:00
John Daley
85b0ccec38 net/enic: fix flow API memory leak
rte_flow structures were not being freed when destroyed or flushed.

Fixes: 6ced137607 ("net/enic: flow API for NICs with advanced filters enabled")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
308b514b8e net/enic: explicitly disable overlay offload
Reopening vNIC does not automatically disable overlay offload. If it
is previously enabled, it remains enabled even when the user restarts
DPDK and requests overlay offload to be disabled via devarg
disable-overlay=1. So explicitly disable overlay offload when
requested.

Fixes: 93fb21fdbe ("net/enic: enable overlay offload for VXLAN and GENEVE")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
70401fd778 net/enic: add VLAN and csum offloads to simple Tx handler
Currently the simple Tx handler supports no offloads, which makes it
usable only for a small number of benchmarks. Add vlan and checksum
offloads to the handler, as cycles/packet increases only by about 3
cycles, and applications commonly use those offloads.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
828cf603a1 net/enic: do not use deprecated Tx VLAN packet flag
Replace PKT_TX_VLAN_PKT (deprecated) with PKT_TX_VLAN.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
fe5383d133 net/enic: set Rx VLAN offload flag for non-stripped packets
The NIC indicates VLAN TCI to the driver even when VLAN stripping is
disabled. The driver sets mbuf's vlan_tci but not PKT_RX_VLAN. Set
PKT_RX_VLAN to indicate that vlan_tci is valid.

Fixes: c6f4555074 ("net/enic: add ethernet VLAN packet type")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
c0aae00d7d net/enic: enable IOVA mode
Cisco VIC models support RTE_IOVA_VA, so enable it. This change allows
the driver to work properly when --no-huge is used, in combination
with vfio and iommu.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Hyong Youb Kim
329380b3a1 net/enic: do not use non-standard integer types
Bugzilla ID: 39
Fixes: 9913fbb91d ("enic/base: common code")
Fixes: 322b355f21 ("net/enic/base: bring NIC interface functions up to date")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-10-11 18:53:48 +02:00
Ferruh Yigit
323e7b667f ethdev: make default behavior CRC strip on Rx
Removed DEV_RX_OFFLOAD_CRC_STRIP offload flag.
Without any specific Rx offload flag, default behavior by PMDs is to
strip CRC.

PMDs that support keeping CRC should advertise DEV_RX_OFFLOAD_KEEP_CRC
Rx offload capability.

Applications that require keeping CRC should check PMD capability first
and if it is supported can enable this feature by setting
DEV_RX_OFFLOAD_KEEP_CRC in Rx offload flag in rte_eth_dev_configure()

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Tomasz Duszynski <tdu@semihalf.com>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Jan Remes <remes@netcope.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-09-14 20:08:41 +02:00
Hyong Youb Kim
0caa07034a net/enic: reset VXLAN port during initialization
The NIC persists the vxlan port number across vNIC init/de-init
(e.g. restart testpmd). So, explicitly reset the setting to the
default value (4789) as part of the initialization.

Fixes: 8a4efd1741 ("net/enic: add handlers to add/delete vxlan port number")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-08-02 10:34:04 +02:00
Hyong Youb Kim
d16623dd39 net/enic: revert mbuf fast free offload
This reverts the patch that enabled mbuf fast free.

There are two main reasons.

First, enic_fast_free_wq_bufs is broken. When
DEV_TX_OFFLOAD_MBUF_FAST_FREE is enabled, the driver calls this
function to free transmitted mbufs. This function currently does not
reset next and nb_segs. This is simply wrong as the fast-free flag
does not imply anything about next and nb_segs.

We could fix enic_fast_free_wq_bufs by making it to call
rte_pktmbuf_prefree_seg to reset the required fields. But, it negates
most of cycle saving.

Second, there are customer applications that blindly enable all Tx
offloads supported by the device. Some of these applications do not
satisfy the requirements of mbuf fast free (i.e. a single pool per
queue and refcnt = 1), and end up crashing or behaving badly.

Fixes: bcaa54c1a1 ("net/enic: support mbuf fast free offload")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-08-02 10:26:02 +02:00
Hyong Youb Kim
920aae3f5c net/enic: pick the right Rx handler after changing MTU
enic_set_mtu always reverts to the default Rx handler after changing
MTU. Try to use the simpler, non-scatter handler in this case as well.

Fixes: 35e2cb6a17 ("net/enic: add simple Rx handler")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-23 23:55:26 +02:00
Thomas Monjalon
f8e9989606 remove useless constructor headers
A constructor is usually declared with RTE_INIT* macros.
As it is a static function, no need to declare before its definition.
The macro is used directly in the function definition.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2018-07-12 00:00:35 +02:00
John Daley
2c06cebeb9 net/enic: cap Rx packet processing to end of desc ring
In the default Rx handler stop processing packets at the end of
the completion ring so that wrapping doesn't have to be checked
in the inner while loop.

Also, check the color bit in the completion without using a conditional.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-07-03 01:54:27 +02:00
John Daley
35e2cb6a17 net/enic: add simple Rx handler
Add an optimized Rx handler for non-scattered Rx.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:26 +02:00
Hyong Youb Kim
5a12c38740 net/enic: check maximum packet size in Tx prepare handler
The default tx handler checks the maximum packet size. Check it in the
prepare handler too. WQ stops working if the app/driver tries to send
oversized packets, so these checks are unavoidable.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:25 +02:00
Hyong Youb Kim
ed933c35ca net/enic: add the simple version of Tx handler
Add a much-simplified handler that works when all offloads are
disabled, except mbuf fast free. When compared against the default
handler, under ideal conditions, cycles per packet drop by 60+%.
The driver tries to use the simple handler first.

The idea of using specialized/simplified handlers is from the Intel
and Mellanox drivers.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:23 +02:00
Hyong Youb Kim
c55614d102 net/enic: reduce Tx completion updates
Request one completion update per roughly 32 buffers. It saves DMA
resources on the NIC, PCIe utilization, and cache miss rates.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:22 +02:00
Hyong Youb Kim
bcaa54c1a1 net/enic: support mbuf fast free offload
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:20 +02:00
Hyong Youb Kim
d355a942b1 net/enic: use mbuf pointer array for inflight Tx packets
WQ is currently using vnic_wq_buf to store mbuf pointers for Tx
packets. But, it contains an unused mempool pointer and mbuf is
unnecessarily cast to void pointer. Remove vnic_wq_buf entirely and
use an mbuf pointer array instead.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:19 +02:00
Hyong Youb Kim
8a4efd1741 net/enic: add handlers to add/delete vxlan port number
The NIC has one configurable VXLAN port, which is set to the default
4789 upon vNIC reset. Adding a non-default port replaces this single
VXLAN port. Deleting the previously added non-default port restores
the VXLAN port to the hardware default.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:17 +02:00
Hyong Youb Kim
e39c2756e2 net/enic: add devarg to specify ingress VLAN rewrite mode
Add a new devarg "ig-vlan-rewrite" to allow the user to set
non-default rewrite mode. The UCS VIC may add/remove/modify the VLAN
header of an ingress packet depending on the ingress VLAN rewrite
mode.

By default, the driver sets the pass-through mode, which tells the NIC
"do not touch VLAN header and preserve it as is". This mode is usually
sufficient, but can complicate deployments for certain environments.
For example, OVS-DPDK in UCS blade environments may want to use "untag
default VLAN mode", which removes the VLAN header from an ingress
packet if it matches vNIC's default VLAN.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:15 +02:00
Hyong Youb Kim
9466a38d38 net/enic: report ring limits and preferred default values
Report min/max ring sizes, alignments, and so on, and rely on the
common checks implemented in the rte_ethdev layer.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:54:12 +02:00
Hyong Youb Kim
1c7c3ad1a0 net/enic: initialize RQ fetch index before enabling RQ
The fetch index must be initialized only when RQ is
disabled. Otherwise, it may lead to stale entries in IG descriptor
cache on the VIC.

Fixes: a74629cfa3 ("net/enic: enable RQ first and then post Rx buffers")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:53:57 +02:00
Hyong Youb Kim
2a7e3d5465 net/enic: do not overwrite admin Tx queue limit
Currently, enic_alloc_wq (via rte_eth_tx_queue_setup) may overwrite
the admin limit with a lower value. This is wrong as seen in the
following sequence.

1. UCS admin-set Tx queue limit (config.wq_desc_count) = 4096
2. Set up tx queue with 512 descriptors
   The admin limit (config.wq_desc_count) becomes 512.
3. Stop ports and now set up Tx queue with 1024 descriptors.
   This fails because 1024 is greater than the admin limit (512).

Do not modify the admin limit, and when queried, report the current
number of descriptors instead of the admin limit. The rx queue setup
(enic_alloc_rq) does not this problem.

Fixes: fefed3d1e6 ("enic: new driver")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:53:44 +02:00
Hyong Youb Kim
5bc989e6db net/enic: update the UDP RSS detection mechanism
The UDP RSS interface has changed in the release firmware for 100G VIC
adapters. The capability bit is now in NIC_CFG. Also the driver is
supposed to use CMD_NIC_CFG_CHK and check if RSS config is
successful. No more changes are expected with respect to UDP RSS API.

Fixes: 94c3518958 ("net/enic: update UDP RSS controls")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:53:26 +02:00
Hyong Youb Kim
15666e5309 net/enic: fix receive packet types
Fix missing or incorrect packet types discovered by DTS.
- Non-IP inner packets
  Set the tunnel flag.
- Inner Ethernet packets
  All supported tunnel packets have Ethernet as inner packets. So, set
  INNER_L2_ETHER for all tunnel types.
- IPv4 fragments carrying TCP/UDP
  The NIC indicates TCP/UDP based on the protocol in IP header. For
  fragments, ignore that bit and always set L4_FRAG.
- IPv6 fragments
  The NIC does regconize fragments (IPv6 packets with fragment extension
  headers). Set packet types for these.

Fixes: 93fb21fdbe ("net/enic: enable overlay offload for VXLAN and GENEVE")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-07-03 01:49:51 +02:00
Hyong Youb Kim
2b9919feab net/enic: fix missing offload capabilities
Add the following missing flags to the advertised offloads.
- DEV_RX_OFFLOAD_CRC_STRIP
  CRC is always stripped.
- DEV_RX_OFFLOAD_JUMBO_FRAME
  Jumbo support is always enabled on the NIC.
- DEV_RX_OFFLOAD_SCATTER
  Scatter Rx is currently supported.
- DEV_TX_OFFLOAD_MULTI_SEGS
  Multiple-segment transmit has always been supported.

Fixes: 93fb21fdbe ("net/enic: enable overlay offload for VXLAN and GENEVE")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-05-14 22:32:23 +01:00
Hyong Youb Kim
9713ece25c net/enic: fix flow drop action
Drop is a fate-deciding action, so mark it as FATE. It was missing in
a previous commit.

Fixes: cc17feb904 ("ethdev: alter behavior of flow API actions")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-05-14 22:31:52 +01:00
Hyong Youb Kim
94c3518958 net/enic: update UDP RSS controls
Current adapters which support UDP RSS piggyback on TCP RSS. Change
the controls to be forward compatible with future adapters, which will
have independent control of UDP and TCP.

Fixes: 9bd04182bb ("net/enic: support UDP RSS on 1400 series adapters")

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2018-05-14 22:31:50 +01:00
Hyong Youb Kim
3656c30e48 net/enic: fix RSS hash type advertisement
The NIC can hash these RSS packet types, but they are not advertised
via flow_type_rss_offloads. So add them.
- Part of the IPv4 hash:
  ETH_RSS_FRAG_IPV4
  ETH_RSS_NONFRAG_IPV4_OTHER
- Part of the IPv6 hash:
  ETH_RSS_FRAG_IPV6
  ETH_RSS_NONFRAG_IPV6_OTHER
- Part of the UDP hash:
  ETH_RSS_IPV6_UDP_EX

Also, do not use NIC_CFG_RSS_HASH_TYPE_IPV6_EX and
NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX, as they are not needed to enable
RSS over IPv6 with extension headers.

Fixes: c2fec27b5c ("net/enic: allow to change RSS settings")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2018-05-14 22:31:50 +01:00
John Daley
579cc855af net/enic: set rte errno to positive value
Related to d9fff8a31, where rte_errno should always have positive
errno values.

Technically this is an ABI change since it fixes an error code
introduced in 18.02, but is minor and inconsequential.

Fixes: 1e81dbb532 ("net/enic: add Tx prepare handler")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2018-05-14 22:31:50 +01:00
Hyong Youb Kim
95faa2a9df net/enic: fix the MTU handler to rely on max packet length
The RQ setup functions (enic_alloc_rq and enic_alloc_rx_queue_mbufs)
have changed to rely on max_rx_pkt_len to determine the use of scatter
and buffer size. But, the MTU handler only updates ethdev's MTU
value. So make it update max_rx_pkt_len as well. Other PMDs also
update both mtu and max_rx_pkt_len in their MTU handlers.

Also the condition for taking a short cut (scatter is disabled) in the
MTU handler is wrong. Even when scatter is disabled, a change in
max_rx_pkt_len may affect the buffer size posted to the NIC. So remove
that condition.

Finally, fix a comment and a warning message condition.

Fixes: 422ba91716 ("net/enic: heed the requested max Rx packet size")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2018-05-14 22:31:50 +01:00
Hyong Youb Kim
a74629cfa3 net/enic: enable RQ first and then post Rx buffers
Future VIC adapters may require that the driver enable RQ before
posting new buffers to the NIC. So split enic_alloc_rx_queue_mbufs()
into two functions, one that allocates buffers and fills RQ and the
other that posts them (i.e. PIO write to a doorbell). And, call the
post function only after enabling RQ.

Currently released models are not affected by this change, as they
work fine whether the driver posts buffers before or after enabling RQ.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2018-05-14 22:31:50 +01:00
Adrien Mazarguil
76e9a55b5b ethdev: add transfer attribute to flow API
This new attribute enables applications to create flow rules that do not
simply match traffic whose origin is specified in the pattern (e.g. some
non-default physical port or VF), but actively affect it by applying the
flow rule at the lowest possible level in the underlying device.

It breaks ABI compatibility for the following public functions:

- rte_flow_copy()
- rte_flow_create()
- rte_flow_validate()

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2018-04-27 18:00:54 +01:00
Adrien Mazarguil
e58638c324 ethdev: fix TPID handling in flow API
TPID handling in rte_flow VLAN and E_TAG pattern item definitions is not
consistent with the normal stacking order of pattern items, which is
confusing to applications.

Problem is that when followed by one of these layers, the EtherType field
of the preceding layer keeps its "inner" definition, and the "outer" TPID
is provided by the subsequent layer, the reverse of how a packet looks like
on the wire:

 Wire:     [ ETH TPID = A | VLAN EtherType = B | B DATA ]
 rte_flow: [ ETH EtherType = B | VLAN TPID = A | B DATA ]

Worse, when QinQ is involved, the stacking order of VLAN layers is
unspecified. It is unclear whether it should be reversed (innermost to
outermost) as well given TPID applies to the previous layer:

 Wire:       [ ETH TPID = A | VLAN TPID = B | VLAN EtherType = C | C DATA ]
 rte_flow 1: [ ETH EtherType = C | VLAN TPID = B | VLAN TPID = A | C DATA ]
 rte_flow 2: [ ETH EtherType = C | VLAN TPID = A | VLAN TPID = B | C DATA ]

While specifying EtherType/TPID is hopefully rarely necessary, the stacking
order in case of QinQ and the lack of documentation remain an issue.

This patch replaces TPID in the VLAN pattern item with an inner
EtherType/TPID as is usually done everywhere else (e.g. struct vlan_hdr),
clarifies documentation and updates all relevant code.

It breaks ABI compatibility for the following public functions:

- rte_flow_copy()
- rte_flow_create()
- rte_flow_query()
- rte_flow_validate()

Summary of changes for PMDs that implement ETH, VLAN or E_TAG pattern
items:

- bnxt: EtherType matching is supported with and without VLAN, but TPID
  matching is not and triggers an error.

- e1000: EtherType matching is only supported with the ETHERTYPE filter,
  which does not support VLAN matching, therefore no impact.

- enic: same as bnxt.

- i40e: same as bnxt with existing FDIR limitations on allowed EtherType
  values. The remaining filter types (VXLAN, NVGRE, QINQ) do not support
  EtherType matching.

- ixgbe: same as e1000, with additional minor change to rely on the new
  E-Tag macro definition.

- mlx4: EtherType/TPID matching is not supported, no impact.

- mlx5: same as bnxt.

- mvpp2: same as bnxt.

- sfc: same as bnxt.

- tap: same as bnxt.

Fixes: b1a4b4cbc0 ("ethdev: introduce generic flow API")
Fixes: 99e7003831 ("net/ixgbe: parse L2 tunnel filter")

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
2018-04-27 18:00:54 +01:00
Adrien Mazarguil
cc17feb904 ethdev: alter behavior of flow API actions
This patch makes the following changes to flow rule actions:

- List order now matters, they are redefined as performed first to last
  instead of "all simultaneously".

- Repeated actions are now supported (e.g. specifying QUEUE multiple times
  now duplicates traffic among them). Previously only the last action of
  any given kind was taken into account.

- No more distinction between terminating/non-terminating/meta actions.
  Flow rules themselves are now defined as always terminating unless a
  PASSTHRU action is specified.

These changes alter the behavior of flow rules in corner cases in order to
prepare the flow API for actions that modify traffic contents or properties
(e.g. encapsulation, compression) and for which order matter when combined.

Previously one would have to do so through multiple flow rules by combining
PASSTRHU with priority levels, however this proved overly complex to
implement at the PMD level, hence this simpler approach.

This breaks ABI compatibility for the following public functions:

- rte_flow_create()
- rte_flow_validate()

PMDs with rte_flow support are modified accordingly:

- bnxt: no change, implementation already forbids multiple actions and does
  not support PASSTHRU.

- e1000: no change, same as bnxt.

- enic: modified to forbid redundant actions, no support for default drop.

- failsafe: no change needed.

- i40e: no change, implementation already forbids multiple actions.

- ixgbe: same as i40e.

- mlx4: modified to forbid multiple fate-deciding actions and drop when
  unspecified.

- mlx5: same as mlx4, with other redundant actions also forbidden.

- sfc: same as mlx4.

- tap: implementation already complies with the new behavior except for
  the default pass-through modified as a default drop.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
2018-04-27 18:00:53 +01:00
John Daley
05e8568269 net/enic: fix uninitialized variable
A local variable was used without initialization and triggered a
coverity issue.

Is is fixed here, but there is no ill effect of not initializing
the variable in this case. 'rxq_interrupt_offset' is irrelevant
if 'rxq_interrupt_enable' is not set (the condition caught by
coverity).

Coverity issue: 268314
Fixes: fc2c8c0668 ("net/enic: use Tx completion index instead of messages")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-04-27 15:54:56 +01:00
Hyong Youb Kim
93fb21fdbe net/enic: enable overlay offload for VXLAN and GENEVE
Recent NIC models support overlay offload. The overlay offload
feature enables the following on the NIC.
- Rx/Tx checksum offloads for both inner and outer packets.
- Rx inner packet type classification.
- TSO.
- Inner RSS.

TX descriptors do not require any changes, except the header length
for TSO. The NIC parses outer/inner packets and performs offloads on
them as necessary. The header length for tunneled TSO includes both
inner and outer headers.

The NIC actually parses and performs the above for NVGRE as well. DPDK
currently has no offload flags for NVGRE, and the hardware has no
controls to individually enable tunnel types either. So do nothing for
now.

The driver enables overlay offload by default. Add a devargs
'disable-overlay=<0|1>' to allow the app to disable it.

Also update the enic guide doc.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-04-27 15:54:55 +01:00
David Marchand
740f5bf176 net/enic: add primary MAC address handler
Modified enic_del_mac_address() to get a return value from the vnic layer.
Reused the .mac_addr_add and .mac_addr_del callbacks code to implement
primary mac address handler.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-04-27 15:54:55 +01:00
Ferruh Yigit
cd8c7c7ce2 ethdev: replace bus specific struct with generic dev
Public struct rte_eth_dev_info has a "struct rte_pci_device" field in it
although it is common for all ethdev in all buses.

Replacing pci specific struct with generic device struct and updating
places that are using pci device in a way to get this information from
generic device.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Reviewed-by: David Marchand <david.marchand@6wind.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
2018-04-14 00:41:44 +02:00
Hyong Youb Kim
036c545da1 net/enic: support drop flow action
1330 and 1400 series adapters support the drop action. Check for its
availability and set the necessary flag when creating NIC filters.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-04-14 00:41:44 +02:00
John Daley
33a2d65949 net/enic: fix crash on MTU update with non-setup queues
The enic code called from rte_eth_dev_set_mtu() was assuming that the
Rx queues are already set up via a call to rte_eth_tx_queue_setup().
OVS calls rte_eth_dev_set_mtu() before rte_eth_rx_queue_setup() and
a null pointer was dereferenced.

Fixes: c3e09182bc ("net/enic: support scatter Rx in MTU update")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-04-14 00:41:44 +02:00
John Daley
9bd04182bb net/enic: support UDP RSS on 1400 series adapters
Recent models support IPv4/IPv6 UDP RSS. There is no control bit to
enable UDP RSS alone. Instead, the NIC enables/disables TCP and UDP
RSS together.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-04-14 00:41:44 +02:00
Hyong Youb Kim
fe26a3bb33 net/enic: do not flush descriptor cache when opening vNIC
The firmware on new hardware models flushes the global descriptor
cache by default. Use CMD_OPENF_IG_DESCCACHE to avoid cache
flushing. This flag has no effect on older models.

Suggested-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-04-14 00:41:44 +02:00
Anatoly Burakov
46e4fb122f net/enic: use contiguous allocation for DMA memory
All hardware drivers should allocate IOVA-contiguous
memzones for their hardware resources.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: John Daley <johndale@cisco.com>
Tested-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Tested-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
2018-04-11 19:45:39 +02:00
Stephen Hemminger
5042dde07d net/enic: use link status helper functions
Use new rte_eth_linkstatus_get/set helper functions to handle link
status update.

This driver was not doing atomic update of link status information.
And the return value was different than others.
The hardware also does not do autonegotiation (at least on Linux).

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
e14dca8dc1 net/enic: support meson
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
7895d17cf4 net/enic: avoid strict aliasing warnings
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
0f872d3129 net/enic: support Rx queue interrupts
Enable rx queue interrupts if the app requests them, and vNIC has
enough interrupt resources. Use interrupt vector 0 for link status and
errors. Use vector 1 for rx queue 0, vector 2 for rx queue 1, and so
on. So, with n rx queues, vNIC needs to have at n + 1 interrupts.

For VIC, enabling and disabling rx queue interrupts are simply
mask/unmask operations. VIC's credit based interrupt moderation is not
used, as the app wants to explicitly control when to enable/disable
interrupts.

This version requires MSI-X (vfio-pci). Sharing one interrupt for link
status and rx queues is possible, but is rather complex and has no
user demands.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
8d782f3f89 net/enic: allocate stats DMA buffer upfront during probe
The driver provides a DMA buffer to the firmware when it requests port
stats. The NIC then fills that buffer with latest stats. Currently,
the driver allocates the DMA buffer the first time it requests stats
and saves it for later use. This can lead to crashes when
primary/secondary processes are involved. For example, the following
sequence crashes the secondary process.

1. Start a primary app that does not call rte_eth_stats_get()
2. dpdk-procinfo -- --stats

dpdk-procinfo crashes while trying to allocate the stats DMA buffer
because the alloc function pointer (vdev.alloc_consistent) is valid
only in the primary process, not in the secondary process.

Overwriting the alloc function pointer in the secondary process is not
an option, as it will simply make the pointer invalid in the primary
process. Instead, allocate the DMA buffer during probe so that only
the primary process does both allocate and free. This allows the
secondary process to dump stats as well.

Fixes: 9913fbb91d ("enic/base: common code")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
92ca7ea444 net/enic: add Rx/Tx queue configuration getters
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
f9416bbafd net/enic: remove VLAN filter handler
VIC does not support VLAN filtering at the moment. The firmware does
accept the filter add/del commands and returns success. But, they are
no-ops. To avoid confusion, remove the filter set handler so the app
sees an error instead of silent failure.

Also during the device configure time, enicpmd_vlan_offload_set would
not print a warning message about unsupported VLAN filtering, because
the caller specifies only ETH_VLAN_STRIP_MASK. This is wrong, as we
should attempt to apply all requested offloads at the configure
time. So, pass all VLAN offload masks, which triggers a warning
message about VLAN filtering, if requested.

Finally, enicpmd_vlan_offload_set should check both mask and
rxmode.offloads, not just mask.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
422ba91716 net/enic: heed the requested max Rx packet size
Currently, enic completely ignores the requested max Rx packet size
(rxmode.max_rx_pkt_len). The desired behavior is that the NIC hardware
drops packets larger than the requested size, even though they are
still smaller than MTU.

Cisco VIC does not have such a feature. But, we can accomplish a
similar (not same) effect by reducing the size of posted receive
buffers. Packets larger than the posted size get truncated, and the
receive handler drops them. This is also how the kernel enic driver
enforces the Rx side MTU.

This workaround works only when scatter mode is *not* used. When
scatter is used, there is currently no way to support
rxmode.max_rx_pkt_len, as the NIC always receives packets up to MTU.

For posterity, add a copious amount of comments regarding the
hardware's drop/receive behavior with respect to max/current MTU.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
Hyong Youb Kim
c2fec27b5c net/enic: allow to change RSS settings
Currently, when more than 1 receive queues are configured, the driver
always enables RSS with the driver's own default hash type, key, and
RETA. The user is unable to change any of the RSS settings. Address
this by implementing the ethdev RSS API as follows.

Correctly report the RETA size, key size, and supported hash types
through rte_eth_dev_info.

During dev_configure(), initialize RSS according to the device's
mq_mode and rss_conf. Start with the default RETA, and use the default
key unless a custom key is provided.

Add the RETA and rss_conf query/set handlers to let the user change
RSS settings after the initial configuration. The hardware is able to
change hash type, key, and RETA individually. So, the handlers change
only the affected settings.

Refactor/rename several functions in order to make their intentions
clear. For example, remove all traces of RSS from
enicpmd_vlan_offload_set() as it is confusing.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00
John Daley
d98f9d5c86 net/enic: remove extern in function declarations
Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-03-30 14:08:43 +02:00
Harry van Haaren
415103fb33 net/enic: align dynamic log names with standard
This commit aligns the names for dynamic logging with
the newly defined logging format.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2018-01-31 09:28:06 +01:00
Hyong Youb Kim
d26ddeaf11 net/enic: set L4 checksum flags for IPv6 packets
enic_cq_rx_to_pkt_flags() currently sets checksum good/bad flags only
for IPv4.  The hardware actually validates the TCP/UDP checksum of
IPv6 packets too. Set PKT_RX_L4_CKSUM_{GOOD,BAD} accordingly.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-29 10:04:28 +01:00
Hyong Youb Kim
1e81dbb532 net/enic: add Tx prepare handler
Like most NICs, this hardware (Cisco VIC) also requires partial
checksum in the packet for checksum offload and TSO. So, add
the tx_pkt_prepare handler like other PMDs do.

Technically, VIC has an offload mode that does not require partial
checksum for non-TSO packets. But, it has no such mode for TSO
packets, making tx_pkt_prepare unavoidable.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-29 10:04:28 +01:00
Hyong Youb Kim
6c45c33058 net/enic: fix crash due to static max number of queues
ENIC_CQ_MAX, ENIC_WQ_MAX and others are arbitrary values that
prevent the app from using more queues when they are available on
hardware. Remove them and dynamically allocate vnic_cq and such
arrays to accommodate all available hardware queues.

As a side effect of removing ENIC_CQ_MAX, this commit fixes a segfault
that would happen when the app requests more than 16 CQs, because
enic_set_vnic_res() does not consider ENIC_CQ_MAX. For example, the
following command causes a crash.

testpmd -- --rxq=16 --txq=16

Fixes: ce93d3c36d ("net/enic: fix resource check failures when bonding devices")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-29 10:04:28 +01:00
Ferruh Yigit
ffc905f3b8 ethdev: separate driver APIs
Create a rte_ethdev_driver.h file and move PMD specific APIs here.
Drivers updated to include this new header file.

There is no update in header content and since ethdev.h included by
ethdev_driver.h, nothing changed from driver point of view, only
logically grouping of APIs. From applications point of view they can't
access to driver specific APIs anymore and they shouldn't.

More PMD specific data structures still remain in ethdev.h because of
inline functions in header use them. Those will be handled separately.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>
2018-01-22 01:26:49 +01:00
John Daley
721c662594 net/enic: remove a conditional from the Tx path
The VLAN insert flag and VLAN tag used in the VIC write descriptor
can be set unconditionally.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-01-16 18:47:49 +01:00
John Daley
4bb0a6feb3 net/enic: use TSO flags
Depend on the tx_offload flags in the mbuf to determine the length
of the headers instead of looking into the packet itself.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
2e99ea80f8 net/enic: use BSD-3-Clause
enic is currently using BSD-2-Clause, whereas the DPDK approved
license is BSD-3-Clause. So replace license text with BSD-3-Clause.

Remove LICENSE as it is redundant.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
36efba2f93 net/enic: use dynamic log types
"pmd.enic.init" replaces CONFIG_RTE_LIBRTE_ENIC_DEBUG
"pmd.enic.flow" replaces CONFIG_RTE_LIBRTE_ENIC_DEBUG_FLOW

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
b5df2f7ac5 net/enic: refill only the address of the RQ descriptor
Once the RQ descriptors are initialized (enic_alloc_rx_queue_mbufs),
their length_type does not change during normal RX
operations. rx_pkt_burst only needs to reset their address field for
newly allocated mbufs.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
e5f5b9269f net/enic: remove a couple unnecessary statements
No need to zero ol_flags as it is overwritten at the end of the
function. No need to check for EOP as the caller (enic_recv_pkts) has
already checked it.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
c23cd156f0 net/enic: remove remaining header-split code
Header splitting has been disabled at least since the following
commit. Remove the remaining code to avoid confusion.

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

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
5dbff3af25 net/enic: fix L4 Rx ptype comparison
For non-UDP/TCP packets, enic may wrongly set PKT_RX_L4_CKSUM_BAD in
ol_flags. The comparison that checks if a packet is UDP or TCP assumes
that RTE_PTYPE_L4 values are bit flags, but they are not. For example,
the following evaluates to true because NONFRAG is 0x600 and UDP is
0x200, and causes the current code to think the packet is UDP.

!!(RTE_PTYPE_L4_NONFRAG & RTE_PTYPE_L4_UDP)

So, fix this by comparing the packet type against UDP and TCP
individually.

Fixes: 453d15059b ("net/enic: use new Rx checksum flags")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
023f19d669 net/enic: do not set checksum unknown offload flag
PKT_RX_IP_CKSUM_UNKNOWN and PKT_RX_L4_CKSUM_UNKNOWN are zeros, so no
need to set them.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Hyong Youb Kim
a062bafa62 net/enic: use the new ethdev offloads API
The following commits deprecate the use of the offload bit fields
(e.g. header_split) in rte_eth_rxmode and txq_flags in rte_eth_txconf.

commit ce17eddefc ("ethdev: introduce Rx queue offloads API")
commit cba7f53b71 ("ethdev: introduce Tx queue offloads API")

For enic, the required changes are mechanical. Use the new 'offloads'
field in rxmode instead of the bit fields. And, no changes required
with respect to txq_flags, as enic does not use it at all.

Per-queue RX offload capabilities are not set, as all offloads are
per-port at the moment.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-01-16 18:47:49 +01:00
Thomas Monjalon
cebe3d7b3d ethdev: remove useless parameter in callback process
The pointer to the user parameter of the callback registration is
automatically pass to the callback function.
There is no point to allow changing this user parameter by a caller.
That's why this parameter is always set to NULL by PMDs and set only
in ethdev layer before calling the callback function.

The history is that the user parameter was initially used
by the callback implementation to pass some information
between the application and the driver:
	c1ceaf3ad0 ("ethdev: add an argument to internal callback function")
Then a new parameter has been added to leave the user parameter
to its standard usage of context given at registration:
	d6af1a13d7 ("ethdev: add return values to callback process API")

The NULL parameter in the internal callback processing function
is now removed. It makes clear that the callback parameter is user
managed and opaque from a DPDK point of view.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2018-01-16 18:47:49 +01:00
John Daley
cafba10bc1 net/enic: fix TSO for packets greater than 9208 bytes
A check was previously added to drop Tx packets greater than what the Nic
is capable of sending since such packets can freeze the send queue. The
check did not account for TSO packets however, so TSO was limited to 9208
bytes.

Check packet length only for non-TSO packets. Also insure that TSO packet
segment size plus the headers do not exceed what the Nic is capable of
since this also can freeze the send queue.

Use the PKT_TX_TCP_SEG ol_flag instead of m->tso_segsz which is the
preferred way to check for TSO.

Fixes: ed6e564c21 ("net/enic: fix memory leak with oversized Tx packets")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
2017-11-02 19:32:04 +01:00
Santosh Shukla
455da54539 mbuf: rename physical address to IOVA
Rename buf_physaddr to buf_iova.
Keep the deprecated name in an anonymous union to avoid breaking
the API.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-11-06 22:44:26 +01:00
Thomas Monjalon
f17ca7870f memzone: rename address from physical to IOVA
The struct rte_memzone field .phys_addr is renamed to .iova.
The deprecated name is kept in an anonymous union to avoid breaking
the API.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
2017-11-06 22:25:44 +01:00
Gaetan Rivet
c752998b5e pci: introduce library and driver
The PCI lib defines the types and methods allowing to use PCI elements.

The PCI bus implements a bus driver for PCI devices by constructing
rte_bus elements using the PCI lib.

Move the relevant code out of the EAL to its expected place.

Libraries, drivers, unit tests and applications are updated to use the
new rte_bus_pci.h header when necessary.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
2017-10-26 23:17:31 +02:00
David Harton
289ba0c0f5 ethdev: allow returning error on VLAN offload ops
Some devices may not support or fail setting VLAN offload
configuration based on dynamic circumstances so the
vlan_offload_set_t vector is modified to return an int so
the caller can determine success or not.

rte_eth_dev_set_vlan_offload is updated to return the
value provided by the vector when called along with restoring
the original offload configs on failure.

Existing vlan_offload_set_t vectors are modified to return
an int.  Majority of cases return 0 but a few that actually
can fail now return their failure codes.

Finally, a vlan_offload_set_t vector is added to virtio
to facilitate dynamically turning VLAN strip on or off.

Signed-off-by: David Harton <dharton@cisco.com>
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
Olivier Matz
380a7aab1a mbuf: rename deprecated VLAN flags
PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT are deprecated for a while.
As explained in [1], these flags were kept to let the applications and
PMDs move to the new flag. There is also a need to support Rx vlan
offload without vlan strip (at least for the ixgbe driver).

This patch renames the old flags for this feature, knowing that some
PMDs were using PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT to indicate that
the vlan tci has been saved in the mbuf structure.

It is likely that some PMDs do not set the proper flags when doing vlan
offload, and it would be worth making a pass on all of them.

Link: [1] http://dpdk.org/ml/archives/dev/2017-June/067712.html

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-26 02:33:01 +02:00
John Daley
ea5f15b1c4 net/enic: fix packet loss after MTU change
If multiple Rx queues and Rx Scatter are used and the MTU is
modified so that the number of mbufs per packet changes, packet
loss is possible.

The enic completion queue index was miscalculated leaving the
upper half of the queues uninitialized after an MTU change, possibly
leading to completions on those queues not getting processed.

Fixes: c3e09182bc ("net/enic: support scatter Rx in MTU update")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
2017-10-26 02:33:01 +02:00
Olivier Matz
cbc12b0a96 mk: do not generate LDLIBS from directory dependencies
The list of libraries in LDLIBS was generated from the DEPDIRS-xyz
variable. This is valid when the subdirectory name match the library
name, but it's not always the case, especially for PMDs.

The patches removes this feature and explicitly adds the proper
libraries in LDLIBS.

Some DEPDIRS-xyz variables become useless, remove them.

Reported-by: Gage Eads <gage.eads@intel.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Gage Eads <gage.eads@intel.com>
2017-10-24 02:14:57 +02:00
Matan Azrad
d5b0924ba6 ethdev: add return value to stats get dev op
The stats_get dev op API doesn't include return value, so PMD cannot
return an error in case of failure at stats getting process time.

Since PCI devices can be removed and there is a time between the
physical removal to the RMV interrupt, the user may get invalid stats
without any indication.

This patch changes the stats_get API return value to be int instead of
void.

All the net PMDs stats_get dev ops are adjusted by this patch.

Signed-off-by: Matan Azrad <matan@mellanox.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-12 01:52:49 +01:00
Aaron Conole
61789822ac net/enic: remove ancillary assignment
The assignment at initialization is overwritten immediately.  Drop the
assignment.

Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: John Daley <johndale@cisco.com>
2017-10-12 01:52:49 +01:00
Aaron Conole
d15ae1c372 net/enic: remove unused code
The functions here aren't called anywhere in code, at least according to
both the compiler, and some greps.

Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: John Daley <johndale@cisco.com>
2017-10-12 01:52:49 +01:00
Aaron Conole
e735c8e20b net/enic: fix assignment
As it stands, the existing assignment to mbuf has no effect outside of
the function.  Prior to this change, the mbuf argument would contain
an invalid address, but it would not be null.  After this change, the
caller gets a null mbuf back.

Fixes: 947d860c82 ("enic: improve Rx performance")
Cc: stable@dpdk.org

Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: John Daley <johndale@cisco.com>
2017-10-12 01:52:49 +01:00
Aaron Conole
32d1206e3c net/enic: update format string to match arg types
The argument `index` (and unique_id) is unsigned, but the format
string type used was for signed types.

Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: John Daley <johndale@cisco.com>
2017-10-12 01:52:49 +01:00
John Daley
0e804034dc net/enic: fix multi-process operation
- Use rte_malloc() instead of malloc() for the per device 'vdev' structure
  so that it can be shared across processes.
- Only initialize the device if the process type is RTE_PROC_PRIMARY
- Only allow the primary process to do queue setup, start/stop, promisc
  allmulticast, mac add/del, mtu.

Fixes: fefed3d1e6 ("enic: new driver")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
2017-10-06 02:49:49 +02:00
RongQiang Xie
7f4a1aa143 net/enic: fix possible null pointer dereference
In enic_alloc_consistent() function, if rte_malloc for mze is failed,
!mze is true, memzone should be freed and function should return NULL.

Fixes: da5f560be9 ("net/enic: fix memory freeing")
Cc: stable@dpdk.org

Signed-off-by: RongQiang Xie <xie.rongqiang@zte.com.cn>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-10-06 02:49:47 +02:00
Aaron Conole
f7a58af502 net/enic: fix crash when freeing 0 packet to mempool
Occasionally, the amount of packets to free from the work queue ends
perfectly on a boundary to have nb_free = 0 and pool = 0.  This causes
a segfault as follows:

  (gdb) bt
  #0  rte_mempool_default_cache
  #1  rte_mempool_put_bulk (n=0, obj_table=0x7f10deff2530, mp=0x0)
  #2  enic_free_wq_bufs (wq=wq@entry=0x7efabffcd5b0,
      completed_index=completed_index@entry=33)
  #3  0x00007f11e9c86e17 in enic_cleanup_wq (enic=<optimized out>,
      wq=wq@entry=0x7efabffcd5b0)
      at /usr/src/debug/openvswitch-2.6.1/dpdk-16.11/drivers/net/enic/enic_rxtx.c:442
  #4  0x00007f11e9c86e5f in enic_xmit_pkts (tx_queue=0x7efabffcd5b0,
      tx_pkts=0x7f10deffb1a8, nb_pkts=<optimized out>)
      at /usr/src/debug/openvswitch-2.6.1/dpdk-16.11/drivers/net/enic/enic_rxtx.c:470
  #5  0x00007f11e9e147ad in rte_eth_tx_burst (nb_pkts=<optimized out>,
      tx_pkts=0x7f10deffb1a8, queue_id=0, port_id=<optimized out>)

This commit makes the enic wq driver match other drivers who call the
bulk free, by checking that there are actual packets to free.

Fixes: 36935afbc5 ("net/enic: refactor Tx mbuf recycling")
CC: stable@dpdk.org

Reported-by: Vincent S. Cojot <vcojot@redhat.com>
Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1468631
Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: John Daley <johndale@cisco.com>
2017-08-03 22:55:32 +02:00
Bruce Richardson
50f0b41f23 net/enic: replace check for SSE4 with check for x86
Since SSE4 is now minimum requirement for x86 platforms we can replace the
check for SSE4 with a check for x86

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2017-07-04 14:39:18 +02:00
Bernard Iremonger
d6af1a13d7 ethdev: add return values to callback process API
Change the rte_eth_dev_callback_process function to return int,
and add a void *ret_param parameter.
The new parameter is used by ixgbe and i40e instead of abusing
the user data of the callback.

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
2017-07-01 17:19:55 +02:00
Jerin Jacob
98a7ea332b fix typos using codespell utility
Fixing typos across dpdk source code using codespell utility.
Skipped the ethdev driver's base code fixes to keep the base
code intact.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
2017-06-14 23:54:13 +02:00
Ferruh Yigit
a45962823d net/enic: fix build with gcc 7.1
build error:

.../dpdk/drivers/net/enic/base/vnic_dev.c:
  In function ‘vnic_dev_get_mac_addr’:
.../dpdk/drivers/net/enic/base/vnic_dev.c:470:12:
  error: ‘a0’ is used uninitialized in this function
  [-Werror=uninitialized]
  args[0] = *a0;
            ^~~
...dpdk/drivers/net/enic/base/vnic_dev.c:
  In function ‘vnic_dev_classifier’:
...dpdk/drivers/net/enic/base/vnic_dev.c:471:12:
  error: ‘a1’ may be used uninitialized in this function
  [-Werror=maybe-uninitialized]
  args[1] = *a1;
            ^~~
Fixed by providing initial values.

Fixes: 9913fbb91d ("enic/base: common code")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2017-06-14 22:54:31 +02:00
John Daley
936a9b9975 net/enic: flow API debug
Added a debug function to print enic filters and actions when
rte_validate_flow is called. Compiled in CONFIG_RTE_LIBRTE_ENIC_DEBUG_FLOW
is enabled and log level is INFO.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
aa3d2ff821 net/enic: flow API for Legacy NICs
5-tuple exact Flow support for 1200 series adapters. This allows:
Attributes: ingress
Items: ipv4, ipv6, udp, tcp (must exactly match src/dst IP
       addresses and ports and all must be specified).
Actions: queue and void
Selectors: 'is'

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
26faa126d8 net/enic: flow API for NICs with advanced filters disabled
Flow support for 1300 series adapters with the 'Advanced Filter'
mode disabled via the UCS management interface. This allows:
Attributes: ingress
Items: Outer eth, ipv4, ipv6, udp, sctp, tcp, vxlan. Inner eth, ipv4,
       ipv6, udp, tcp.
Actions: queue and void
Selectors: 'is', 'spec' and 'mask'. 'last' is not supported

With advanced filters disabled, an IPv4 or IPv6 item must be specified
in the pattern.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
2bbfbd48b7 net/enic: flow API mark and flag support
For VICs with filter tagging, support the MARK and FLAG actions
by setting appropriate mbuf ol_flags if there is a filter match.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
6ced137607 net/enic: flow API for NICs with advanced filters enabled
Flow support for 1300 series adapters with the 'Advanced Filter'
mode enabled via the UCS management interface. This enables:
Attributes: ingress
Items: Outer eth, ipv4, ipv6, udp, sctp, tcp, vxlan. Inner eth, ipv4,
       ipv6, udp, tcp.
Actions: queue, and void
Selectors: 'is', 'spec' and 'mask'. 'last' is not supported

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
0f76668039 net/enic: flow API skeleton
Stub callbacks for the generic flow API and a new FLOW debug define.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:26 +01:00
John Daley
322b355f21 net/enic/base: bring NIC interface functions up to date
Update the base functions for the Cisco VIC. These files are mostly
common with other VIC drivers so are left alone is as much as possible.
Includes in a new filter/action interface which is needed for Generic
Flow API PMD support. Update FDIR code to use the new interface.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-06-12 10:41:25 +01:00
Ferruh Yigit
c0802544d9 drivers/net: add generic ethdev macro to get PCI device
Instead of many PMD define their own macro, define a generic one in
ethdev and use that in PMDs.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
2017-06-12 10:41:25 +01:00
Ferruh Yigit
dd2c630a5f drivers/net: remove unnecessary macro for unused variables
remove __rte_unused instances that are not required.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Allain Legacy <allain.legacy@windriver.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-06-12 10:41:25 +01:00
David Marchand
06e81dc9b7 drivers/net: fix vfio kmod dependency
vfio is the kernel framework used by the vfio-pci kernel driver.
DPDK drivers do not rely solely on vfio, but rather on vfio-pci to gain
access to pci resources.

Fixes: 0880c40113 ("drivers: advertise kmod dependencies in pmdinfo")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@6wind.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-06-05 20:56:54 +02:00
Wei Dai
6d01e580ac ethdev: fix adding invalid MAC address
Some customers find adding MAC addr to VF sometimes can fail,
but it is still stored in dev->data->mac_addrs[ ]. So this
can lead to some errors that assumes the non-zero entry in
dev->data->mac_addrs[ ] is valid.
Following acknowledgements are from specific NIC PMD
maintainer for their managing part.

This patch changes the ethdev internal API, it should not be
backported to a stable/LTS release so far.

Fixes: af75078fec ("first public release")

Signed-off-by: Wei Dai <wei.dai@intel.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
2017-05-05 16:27:11 +02:00
John Daley
fb83a23eeb net/enic: remove initialization of some mbuf fields
Remove initialization of next and nb_segs mbuf fields in the Rx path
since they are now initialized in the mbuf pool.

See commit 8f094a9ac5 ("mbuf: set mbuf fields while in pool").

Signed-off-by: John Daley <johndale@cisco.com>
2017-04-19 15:37:37 +02:00
Jan Blunck
fdf91e0f2f drivers/net: do not use ethdev driver
Signed-off-by: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
2017-04-18 19:05:46 +02:00
Qi Zhang
c23a1a3000 eal: clean up interrupt handle
The patch change the prototype of callback function
(rte_intr_callback_fn) by removing the unnecessary parameter.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
2017-04-06 21:15:55 +02:00
Olivier Matz
54e9290269 mbuf: make segment prefree function public
Document the function and make it public, since it is used at several
places in the drivers. The old one is marked as deprecated.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2017-04-05 11:30:29 +02:00
Olivier Matz
feb9f680cd mk: optimize directory dependencies
Before this patch, the management of dependencies between directories
had several issues:

- the generation of .depdirs, done at configuration is slow: it can take
  more than one minute on some slow targets (usually ~10s on a standard
  PC without -j).

- for instance, it is possible to express a dependency like:
  - app/foo depends on lib/librte_foo
  - and lib/librte_foo depends on app/bar
  But this won't work because the directories are traversed with a
  depth-first algorithm, so we have to choose between doing 'app' before
  or after 'lib'.

- the script depdirs-rule.sh is too complex.

- we cannot use "make -d" for debug, because the output of make is used for
  the generation of .depdirs.

This patch moves the DEPDIRS-* variables in the upper Makefile, making
the dependencies much easier to calculate. A DEPDIRS variable is still
used to process library dependencies in LDLIBS.

After this commit, "make config" is almost immediate.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Tested-by: Robin Jarry <robin.jarry@6wind.com>
Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-03-27 23:28:43 +02:00
Olivier Matz
0ef850c4f6 ethdev: move a queue id check to generic layer
The check of queue_id is done in all drivers implementing
rte_eth_rx_queue_count(). Factorize this check in the generic function.

Note that the nfp driver was doing the check differently, which could
induce crashes if the queue index was too big.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2017-03-09 19:29:51 +01:00
John Daley
9e226650fd net/enic: fix hardcoding of some flow director masks
Hard coded mask values were being used for several of the IPv4 and IPv6
fields. Use the values in the rte_eth_fdir_masks structure provided by the
caller.

Fixes: dfbd6a9cb5 ("net/enic: extend flow director support for 1300 series")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
2017-02-10 12:25:49 +01:00
John Daley
ed6e564c21 net/enic: fix memory leak with oversized Tx packets
If a packet send is attempted with a packet larger than the NIC
is capable of processing (9208) it will be dropped with no
completion descriptor returned or completion index update, which
will lead to an mbuf leak and eventual hang.

Drop and count oversized Tx packets in the Tx burst function and
dereference/free the mbuf without sending it to the NIC.

Since the maximum Rx and Tx packet sizes are different on enic
and are now both being used, make the define ENIC_DEFAULT_MAX_PKT_SIZE
be 2 defines, one for Rx and one for Tx.

Fixes: fefed3d1e6 ("enic: new driver")
Cc: stable@dpdk.org

Signed-off-by: John Daley <johndale@cisco.com>
2017-02-10 12:25:49 +01:00
John Daley
bbab3d97c3 net/enic: fix MAC address add and remove
The mac_addr_add callback function was simply replacing the primary MAC
address instead of adding new ones and the mac_addr_remove callback would
only remove the primary MAC form the adapter. Fix the functions to add or
remove new address. Allow up to 64 MAC addresses per port.

Fixes: fefed3d1e6 ("enic: new driver")

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2017-01-30 22:18:26 +01:00
Santosh Shukla
dd7862ba58 net/enic: use I/O device memory read/write API
Replace the raw I/O device memory read/write access with eal
abstraction for I/O device memory read/write access to fix portability
issues across different architectures.

CC: John Daley <johndale@cisco.com>
CC: Nelson Escobar <neescoba@cisco.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-01-18 17:18:26 +01:00
John Daley
9d0fe07b4e net/enic: remove unnecessary function parameter attributes
Remove __rte_unused attributes in function declaration when
the parameters really are used.

Fixes: dfbd6a9cb5 ("net/enic: extend flow director support for 1300 series")

Signed-off-by: John Daley <johndale@cisco.com>
2017-01-17 19:41:42 +01:00
John Daley
453d15059b net/enic: use new Rx checksum flags
Use the new L3 and L4 ..CKSUM_GOOD  and ..CKSUM_UNKNOWN flags to
distinguish good checksums from unknown ones.

Signed-off-by: John Daley <johndale@cisco.com>
2017-01-17 19:41:42 +01:00
John Daley
026afc76b0 net/enic: support TSO
The enic TSO implementation requires that the length of the Eth/IP/TCP
headers be passed to the NIC. Other than that, it's just a matter of
setting the mss and offload mode on a per packet basis.

In TSO mode, IP and TCP checksums are offloaded even if not requested
with mb->ol_flags.

Signed-off-by: John Daley <johndale@cisco.com>
2017-01-17 19:41:42 +01:00
Jan Blunck
eac901ce29 ethdev: decouple from PCI device
This makes struct rte_eth_dev independent of struct rte_pci_device by
replacing it with a pointer to the generic struct rte_device.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
2016-12-25 23:30:19 +01:00
Jan Blunck
ae34410a8a ethdev: move info filling of PCI into drivers
Only the drivers itself can decide if it could fill PCI information fields
of dev_info.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
2016-12-25 23:25:42 +01:00
Olivier Matz
0880c40113 drivers: advertise kmod dependencies in pmdinfo
Add a new macro RTE_PMD_REGISTER_KMOD_DEP() that allows a driver to
declare the list of kernel modules required to run properly.

Today, most PCI drivers require uio/vfio.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
2016-12-20 18:26:00 +01:00
John Daley
f201fd0585 net/enic: fix max packet length check
When the device was configured with an explicit maximum packet length,
it would fail if the value was greater than MTU configured in CIMC/UCSM
(plus L2 header length). It should have been compared against maximum
allowed by the device.

Fixes: bb34ffb848 ("net/enic: determine max egress packet size and max MTU")

Signed-off-by: John Daley <johndale@cisco.com>
2016-11-07 18:01:11 +01:00
John Daley
7832fe9819 net/enic: fix UDP port in flow director
This fixes issue found by Coverity where a typo caused the flow director
UDP IPv4 source port mask to be assigned the destination port mask
supplied by the caller.

Coverity issue: 137860
Fixes: dfbd6a9cb5 ("net/enic: extend flow director support for 1300 series")

Signed-off-by: John Daley <johndale@cisco.com>
2016-10-26 19:38:18 +02:00
John Daley
ce16fd705c net/enic: fix multi-queue Rx performance
The rx_free_thresh was not being initialized and left at 0
on 1/2 of the RQs which could lead to poor multi-queue
performance.

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

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2016-10-26 19:38:18 +02:00
John Daley
aa07bf8fa7 net/enic: rename functions for queue index conversion
The function names for converting between RQ indexes known to
the RTE code and internal RQ indexes for primary Start of Packet
(SOP) queues and spill-over (Data) queues was unclear and
confusing.

Clarify with more explicit function names.

Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
2016-10-26 19:38:18 +02:00