igb and ixgbe and some other 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 (4): librte_ethdev: Introduce a function to release HW rings drivers/net: Fix in igb and ixgbe HW rings memory drivers/net: Fix in i40e HW rings memory overlap drivers/net: Fix in em and ice HW rings memory overlap drivers/net/e1000/em_rxtx.c | 2 ++ drivers/net/e1000/igb_rxtx.c | 2 ++ drivers/net/i40e/i40e_rxtx.c | 2 ++ drivers/net/ice/ice_rxtx.c | 2 ++ drivers/net/ixgbe/ixgbe_rxtx.c | 2 ++ lib/librte_ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++-- lib/librte_ethdev/rte_ethdev_driver.h | 19 +++++++++++++++ lib/librte_ethdev/rte_ethdev_version.map | 1 + 8 files changed, 58 insertions(+), 2 deletions(-) -- 2.17.2
