From 6de6c1f840c051017f2308503858ff19344c56b3 Mon Sep 17 00:00:00 2001 From: Nikita V. Shirokov Date: Wed, 18 Dec 2019 12:57:47 -0800 Subject: bpf: Allow to change skb mark in test_run allow to pass skb's mark field into bpf_prog_test_run ctx for BPF_PROG_TYPE_SCHED_CLS prog type. that would allow to test bpf programs which are doing decision based on this field Signed-off-by: Nikita V. Shirokov Signed-off-by: Alexei Starovoitov --- net/bpf/test_run.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'net') diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 93a9c87787e0..d555c0d8657d 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -251,7 +251,13 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb) return 0; /* make sure the fields we don't use are zeroed */ - if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, priority))) + if (!range_is_zero(__skb, 0, offsetof(struct __sk_buff, mark))) + return -EINVAL; + + /* mark is allowed */ + + if (!range_is_zero(__skb, offsetofend(struct __sk_buff, mark), + offsetof(struct __sk_buff, priority))) return -EINVAL; /* priority is allowed */ @@ -274,6 +280,7 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb) sizeof(struct __sk_buff))) return -EINVAL; + skb->mark = __skb->mark; skb->priority = __skb->priority; skb->tstamp = __skb->tstamp; memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN); @@ -301,6 +308,7 @@ static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb) if (!__skb) return; + __skb->mark = skb->mark; __skb->priority = skb->priority; __skb->tstamp = skb->tstamp; memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN); -- cgit v1.2.3