[dpdk-dev] [PATCH 0/2] Memory corruption due to HW rings allocation

[Renata Saiakhova <Renata.Saiakhova@ekinops.com>]

igb and ixgbe drivers allocate HW rings using rte_eth_dma_zone_reserve(),
which checks first if the memzone exists for a given name, consisting of port
id, queue_id, rx/tx direction, but not for the size, alignment, and socket_id.
If the memzone with a given name exists it is returned, otherwise it is
allocated.
Disconnecting dpdk port from one type of interface (igb) and connecting it
to another type of interface (ixgbe) for the same port id, potentially creates
memory overlap and corruption, because it may require memzone of bigger size.
That's what is happening from switching from igb to ixgbe having the same port
id.

Renata Saiakhova (2):
  librte_ethdev: Introduce a function to release HW rings
  drivers/net: Fix in e1000 and ixgbe HW rings memory overlap

 drivers/net/e1000/igb_rxtx.c             |  2 ++
 drivers/net/ixgbe/ixgbe_rxtx.c           |  2 ++
 lib/librte_ethdev/rte_ethdev.c           | 23 +++++++++++++++++++++++
 lib/librte_ethdev/rte_ethdev_driver.h    | 14 ++++++++++++++
 lib/librte_ethdev/rte_ethdev_version.map |  1 +
 5 files changed, 42 insertions(+)

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2.17.1