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linux/tools/testing/selftests/bpf/xsk_xdp_common.h

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selftests/xsk: add xdp populate metadata test Add a new test in copy-mode for testing the copying of metadata from the buffer in kernel-space to user-space. This is accomplished by adding a new XDP program and using the bss map to store a counter that is written to the metadata field. This counter is incremented for every packet so that the number becomes unique and should be the same as the payload. It is store in the bss so the value can be reset between runs. The XDP program populates the metadata and the userspace program checks the value stored in the metadata field against the payload using the new is_metadata_correct() function. To turn this verification on or off, add a new parameter (use_metadata) to the ifobject structure. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/r/20230320102705.306187-1-tushar.vyavahare@intel.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-03-20 15:57:05 +05:30
/* SPDX-License-Identifier: GPL-2.0 */
selftests/xsk: Rename xsk_xdp_metadata.h to xsk_xdp_common.h Rename the header file to a generic name so that it can be used by all future XDP programs. Ensure that the xsk_xdp_common.h header file includes include guards. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20230927135241.2287547-3-tushar.vyavahare@intel.com
2023-09-27 19:22:35 +05:30
#ifndef XSK_XDP_COMMON_H_
#define XSK_XDP_COMMON_H_
selftests/xsk: Add a test for shared umem feature Add a new test for testing shared umem feature. This is accomplished by adding a new XDP program and using the multiple sockets. The new XDP program redirects the packets based on the destination MAC address. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20230927135241.2287547-9-tushar.vyavahare@intel.com
2023-09-27 19:22:41 +05:30
#define MAX_SOCKETS 2
selftests/xsk: Add tail adjustment tests and support check Introduce tail adjustment functionality in xskxceiver using bpf_xdp_adjust_tail(). Add `xsk_xdp_adjust_tail` to modify packet sizes and drop unmodified packets. Implement `is_adjust_tail_supported` to check helper availability. Develop packet resizing tests, including shrinking and growing scenarios, with functions for both single-buffer and multi-buffer cases. Update the test framework to handle various scenarios and adjust MTU settings. These changes enhance the testing of packet tail adjustments, improving AF_XDP framework reliability. Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://patch.msgid.link/20250410033116.173617-3-tushar.vyavahare@intel.com
2025-04-10 03:31:16 +00:00
#define PKT_HDR_ALIGN (sizeof(struct ethhdr) + 2) /* Just to align the data in the packet */
selftests/xsk: Add a test for shared umem feature Add a new test for testing shared umem feature. This is accomplished by adding a new XDP program and using the multiple sockets. The new XDP program redirects the packets based on the destination MAC address. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20230927135241.2287547-9-tushar.vyavahare@intel.com
2023-09-27 19:22:41 +05:30
selftests/xsk: add xdp populate metadata test Add a new test in copy-mode for testing the copying of metadata from the buffer in kernel-space to user-space. This is accomplished by adding a new XDP program and using the bss map to store a counter that is written to the metadata field. This counter is incremented for every packet so that the number becomes unique and should be the same as the payload. It is store in the bss so the value can be reset between runs. The XDP program populates the metadata and the userspace program checks the value stored in the metadata field against the payload using the new is_metadata_correct() function. To turn this verification on or off, add a new parameter (use_metadata) to the ifobject structure. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://lore.kernel.org/r/20230320102705.306187-1-tushar.vyavahare@intel.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-03-20 15:57:05 +05:30
struct xdp_info {
__u64 count;
} __attribute__((aligned(32)));
selftests/xsk: Rename xsk_xdp_metadata.h to xsk_xdp_common.h Rename the header file to a generic name so that it can be used by all future XDP programs. Ensure that the xsk_xdp_common.h header file includes include guards. Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20230927135241.2287547-3-tushar.vyavahare@intel.com
2023-09-27 19:22:35 +05:30
#endif /* XSK_XDP_COMMON_H_ */
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