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Merge branch 'bpf-nfp-jit-adjust-head-support'
Jakub Kicinski says: ==================== This small set adds support for bpf_xdp_adjust_head() to the offload. Since we have access to unmodified BPF bytecode translating calls is pretty trivial. First part of the series adds handling of BPF capabilities included in the FW in TLV format. The last two patches add adjust head support in the nfp verifier and jit, and a small optimization in case we can guarantee the constant adjustment will always meet adjustment constaints. ==================== Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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/* | ||
* Copyright (C) 2017 Netronome Systems, Inc. | ||
* | ||
* This software is dual licensed under the GNU General License Version 2, | ||
* June 1991 as shown in the file COPYING in the top-level directory of this | ||
* source tree or the BSD 2-Clause License provided below. You have the | ||
* option to license this software under the complete terms of either license. | ||
* | ||
* The BSD 2-Clause License: | ||
* | ||
* Redistribution and use in source and binary forms, with or | ||
* without modification, are permitted provided that the following | ||
* conditions are met: | ||
* | ||
* 1. Redistributions of source code must retain the above | ||
* copyright notice, this list of conditions and the following | ||
* disclaimer. | ||
* | ||
* 2. Redistributions in binary form must reproduce the above | ||
* copyright notice, this list of conditions and the following | ||
* disclaimer in the documentation and/or other materials | ||
* provided with the distribution. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | ||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | ||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
* SOFTWARE. | ||
*/ | ||
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#ifndef NFP_BPF_FW_H | ||
#define NFP_BPF_FW_H 1 | ||
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#include <linux/bitops.h> | ||
#include <linux/types.h> | ||
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enum bpf_cap_tlv_type { | ||
NFP_BPF_CAP_TYPE_ADJUST_HEAD = 2, | ||
}; | ||
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struct nfp_bpf_cap_tlv_adjust_head { | ||
__le32 flags; | ||
__le32 off_min; | ||
__le32 off_max; | ||
__le32 guaranteed_sub; | ||
__le32 guaranteed_add; | ||
}; | ||
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#define NFP_BPF_ADJUST_HEAD_NO_META BIT(0) | ||
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#endif |
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