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linux/net/xdp
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Krzysztof Kazimierczak cc5b5d3565 xsk: Check if a queue exists during umem setup 
In the xdp_umem_assign_dev() path, the xsk code does not
check if a queue for which umem is to be created exists.
It leads to a situation where umem is not assigned to any
Tx/Rx queue of a netdevice, without notifying the stack
about an error. This affects both XDP_SKB and XDP_DRV
modes - in case of XDP_DRV_ZC, queue index is checked by
the driver.

This patch fixes xsk code, so that in both XDP_SKB and
XDP_DRV mode of AF_XDP, an error is returned when requested
queue index exceedes an existing maximum.

Fixes: c9b47cc1fa ("xsk: fix bug when trying to use both copy and zero-copy on one queue id")
Reported-by: Jakub Spizewski <jakub.spizewski@intel.com>
Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
History 2019-01-15 20:51:57 +01:00
..
Kconfig net: initial AF_XDP skeleton 2018-05-03 15:55:23 -07:00
Makefile xsk: remove newline at end of file 2018-05-18 16:07:02 +02:00
xdp_umem.c xsk: Check if a queue exists during umem setup 2019-01-15 20:51:57 +01:00
xdp_umem.h xsk: fix bug when trying to use both copy and zero-copy on one queue id 2018-10-05 09:31:00 +02:00
xsk.c xsk: simplify AF_XDP socket teardown 2018-12-19 21:45:17 +01:00
xsk_queue.c net: xsk: add a simple buffer reuse queue 2018-09-25 13:13:15 -07:00
xsk_queue.h net: xsk: add a simple buffer reuse queue 2018-09-25 13:13:15 -07:00