kernel/drivers/net/ethernet/cavium/thunder, branch linux-4.3.y

net: thunder: Check for driver data in nicvf_remove()

2015-12-15T05:40:59Z

[ Upstream commit 7750130d93decff06120df0d8ea024ff8a038a21 ] In some cases the crash is caused by nicvf_remove() being called from outside. For example, if we try to feed the device to vfio after the probe has failed for some reason. So, move the check to better place. Signed-off-by: Pavel Fedin Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

net: thunderx: add missing of_node_put

2015-10-27T05:08:07Z

for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // @@ local idexpression r.n; expression r,e; @@ for_each_child_of_node(r,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? break; ) ... } ... when != n // Signed-off-by: Julia Lawall Signed-off-by: David S. Miller

net: thunderx: Incorporate pass2 silicon CPI index configuration changes

2015-10-26T01:13:02Z

Add support for ThunderX pass2 CPI and MPI configuration changes. MPI_ALG is not enabled i.e MCAM parsing is disabled. Signed-off-by: Thanneeru Srinivasulu Signed-off-by: Sunil Goutham Signed-off-by: David Daney Signed-off-by: David S. Miller

net: thunderx: Rewrite silicon revision tests.

2015-10-26T01:13:00Z

The test for pass-1 silicon was incorrect, it should be for all revisions less than 8. Also the revision is already present in the pci_dev, so there is no need to read and keep a private copy. Remove rev_id and code to read it from struct nicpf. Create new static inline function pass1_silicon() to be used to testing the silicon version. Use pass1_silicon() for revision checks, this will be more widely used in follow on patches. Signed-off-by: David Daney Signed-off-by: David S. Miller

net: thunderx: Fix incorrect subsystem devid of VF on pass2 silicon

2015-10-26T01:12:59Z

Signed-off-by: Sunil Goutham Signed-off-by: David Daney Signed-off-by: David S. Miller

net: thunderx: Remove PF soft reset.

2015-10-26T01:12:56Z

In some silicon revisions, the soft reset clobbers PCI config space, so quit doing the reset. Signed-off-by: Sunil Goutham Signed-off-by: David Daney Signed-off-by: David S. Miller

net: thunderx: Support for internal loopback mode

2015-08-31T04:54:12Z

Support for setting VF's corresponding BGX LMAC in internal loopback mode. This mode can be used for verifying basic HW functionality such as packet I/O, RX checksum validation, CQ/RBDR interrupts, stats e.t.c. Useful when DUT has no external network connectivity. 'loopback' mode can be enabled or disabled via ethtool. Note: This feature is not supported when no of VFs enabled are morethan no of physical interfaces i.e active BGX LMACs Signed-off-by: Sunil Goutham Signed-off-by: Aleksey Makarov Signed-off-by: David S. Miller

net: thunderx: Support for upto 96 queues for a VF

2015-08-31T04:54:12Z

This patch adds support for handling multiple qsets assigned to a single VF. There by increasing no of queues from earlier 8 to max no of CPUs in the system i.e 48 queues on a single node and 96 on dual node system. User doesn't have option to assign which Qsets/VFs to be merged. Upon request from VF, PF assigns next free Qsets as secondary qsets. To maintain current behavior no of queues is kept to 8 by default which can be increased via ethtool. If user wants to unbind NICVF driver from a secondary Qset then it should be done after tearing down primary VF's interface. Signed-off-by: Sunil Goutham Signed-off-by: Aleksey Makarov Signed-off-by: Robert Richter Signed-off-by: David S. Miller

net: thunderx: Rework interrupt handling

2015-08-31T04:54:12Z

Rework interrupt handler to avoid checking IRQ affinity of CQ interrupts. Now separate handlers are registered for each IRQ including RBDR. Register interrupt handlers for only those which are being used. Add nicvf_dump_intr_status() and use it in irq handlers. Signed-off-by: Sunil Goutham Signed-off-by: Aleksey Makarov Signed-off-by: David S. Miller

net: thunderx: Support for HW VLAN stripping

2015-08-31T04:54:12Z

This patch configures HW to strip 802.1Q header if found in a receiving packet. The stripped VLAN ID and TCI information is passed on to software via CQE_RX. Also sets netdev's 'vlan_features' so that other HW offload features can be used for tagged packets. This offload feature can be enabled or disabled via ethtool. Network stack normally ignores RPS for 802.1Q packets and hence low throughput. With this offload enabled throughput for tagged packets will be almost same as normal packets. Note: This patch doesn't enable HW VLAN insertion for transmit packets. Signed-off-by: Sunil Goutham Signed-off-by: Aleksey Makarov Signed-off-by: David S. Miller