Only sync the header from include/uapi/linux/bpf.h.
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| @@ -1801,6 +1801,30 @@ union bpf_attr { · 1800 unmodified lines | |||
| 1801 | * Return | 1801 | * Return |
| 1802 | * a non-negative value equal to or less than size on success, or | 1802 | * a non-negative value equal to or less than size on success, or |
| 1803 | * a negative error in case of failure. | 1803 | * a negative error in case of failure. |
| 1804 | * | ||
| 1805 | * int skb_load_bytes_relative(const struct sk_buff *skb, u32 offset, void *to, u32 len, u32 start_header) | ||
| 1806 | * Description | ||
| 1807 | * This helper is similar to **bpf_skb_load_bytes**\ () in that | ||
| 1808 | * it provides an easy way to load *len* bytes from *offset* | ||
| 1809 | * from the packet associated to *skb*, into the buffer pointed | ||
| 1810 | * by *to*. The difference to **bpf_skb_load_bytes**\ () is that | ||
| 1811 | * a fifth argument *start_header* exists in order to select a | ||
| 1812 | * base offset to start from. *start_header* can be one of: | ||
| 1813 | * | ||
| 1814 | * **BPF_HDR_START_MAC** | ||
| 1815 | * Base offset to load data from is *skb*'s mac header. | ||
| 1816 | * **BPF_HDR_START_NET** | ||
| 1817 | * Base offset to load data from is *skb*'s network header. | ||
| 1818 | * | ||
| 1819 | * In general, "direct packet access" is the preferred method to | ||
| 1820 | * access packet data, however, this helper is in particular useful | ||
| 1821 | * in socket filters where *skb*\ **->data** does not always point | ||
| 1822 | * to the start of the mac header and where "direct packet access" | ||
| 1823 | * is not available. | ||
| 1824 | * | ||
| 1825 | * Return | ||
| 1826 | * 0 on success, or a negative error in case of failure. | ||
| 1827 | * | ||
| 1804 | */ | 1828 | */ |
| 1805 | #define __BPF_FUNC_MAPPER(FN) \ | 1829 | #define __BPF_FUNC_MAPPER(FN) \ |
| 1806 | FN(unspec), \ | 1830 | FN(unspec), \ |
| @@ -1870,7 +1894,8 @@ union bpf_attr { · 63 unmodified lines | |||
| 1870 | FN(bind), \ | 1894 | FN(bind), \ |
| 1871 | FN(xdp_adjust_tail), \ | 1895 | FN(xdp_adjust_tail), \ |
| 1872 | FN(skb_get_xfrm_state), \ | 1896 | FN(skb_get_xfrm_state), \ |
| 1873 | FN(get_stack), | 1897 | FN(get_stack), \ |
| 1898 | FN(skb_load_bytes_relative), | ||
| 1874 | 1899 | ||
| 1875 | /* integer value in 'imm' field of BPF_CALL instruction selects which helper | 1900 | /* integer value in 'imm' field of BPF_CALL instruction selects which helper |
| 1876 | * function eBPF program intends to call | 1901 | * function eBPF program intends to call |
| @@ -1931,6 +1956,12 @@ enum bpf_adj_room_mode { · 54 unmodified lines | |||
| 1931 | BPF_ADJ_ROOM_NET, | 1956 | BPF_ADJ_ROOM_NET, |
| 1932 | }; | 1957 | }; |
| 1933 | 1958 | ||
| 1959 | /* Mode for BPF_FUNC_skb_load_bytes_relative helper. */ | ||
| 1960 | enum bpf_hdr_start_off { | ||
| 1961 | BPF_HDR_START_MAC, | ||
| 1962 | BPF_HDR_START_NET, | ||
| 1963 | }; | ||
| 1964 | |||
| 1934 | /* user accessible mirror of in-kernel sk_buff. | 1965 | /* user accessible mirror of in-kernel sk_buff. |
| 1935 | * new fields can only be added to the end of this structure | 1966 | * new fields can only be added to the end of this structure |
| 1936 | */ | 1967 | */ |