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Author	SHA1	Message	Date
Ciara Loftus	37e838f959	libbpf: Ensure umem pointer is non-NULL before dereferencing ... Calls to xsk_socket__create dereference the umem to access the fill_save and comp_save pointers. Make sure the umem is non-NULL before doing this. Fixes: 2f6324a3937f ("libbpf: Support shared umems between queues and devices") Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20210331061218.1647-2-ciara.loftus@intel.com	2021-04-05 11:30:05 -07:00
Ciara Loftus	8ec7d86efe	xsk: Add new statistics ... It can be useful for the user to know the reason behind a dropped packet. Introduce new counters which track drops on the receive path caused by: 1. rx ring being full 2. fill ring being empty Also, on the tx path introduce a counter which tracks the number of times we attempt pull from the tx ring when it is empty. Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200708072835.4427-2-ciara.loftus@intel.com	2020-07-28 14:03:17 -07:00