hulk inclusion category: featrue bugzilla: https://gitee.com/openeuler/kernel/issues/ICS15S -------------------------------- Add bpf_xdp_set_ingress_dst kfunc for xdp program. It is used to set the receive dst entry to the skb associated with xdp_buff. Signed-off-by: Pu Lehui <pulehui@huawei.com> --- net/core/filter.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/net/core/filter.c b/net/core/filter.c index fd717806586c..3ed92fbe3cfa 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -12077,6 +12077,26 @@ bpf_skops_get_ingress_dst(struct bpf_sock_ops *skops_ctx) return dst; } + +__bpf_kfunc int bpf_xdp_set_ingress_dst(struct xdp_md *xdp_ctx, void *dst__ign) +{ + struct xdp_buff *xdp = (struct xdp_buff *)xdp_ctx; + struct hisock_xdp_buff *hxdp = (struct hisock_xdp_buff *)xdp; + struct dst_entry *_dst = (struct dst_entry *)dst__ign; + + if (!hxdp->skb) + return -EOPNOTSUPP; + + if (!_dst || !virt_addr_valid(_dst)) + return -EFAULT; + + /* same as skb_valid_dst */ + if (_dst->flags & DST_METADATA) + return -EINVAL; + + skb_dst_set_noref(hxdp->skb, _dst); + return 0; +} #endif __diag_pop(); @@ -12100,6 +12120,9 @@ BTF_SET8_END(bpf_kfunc_check_set_skb) BTF_SET8_START(bpf_kfunc_check_set_xdp) BTF_ID_FLAGS(func, bpf_dynptr_from_xdp) +#ifdef CONFIG_HISOCK +BTF_ID_FLAGS(func, bpf_xdp_set_ingress_dst) +#endif BTF_SET8_END(bpf_kfunc_check_set_xdp) BTF_SET8_START(bpf_kfunc_check_set_sock_addr) -- 2.34.1