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-rw-r--r--include/linux/skbuff.h2
-rw-r--r--include/uapi/linux/bpf.h5
-rw-r--r--net/bpf/test_run.c2
-rw-r--r--net/core/flow_dissector.c12
4 files changed, 17 insertions, 4 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 718742b1c505..9b7a8038beec 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1271,7 +1271,7 @@ static inline int skb_flow_dissector_bpf_prog_detach(const union bpf_attr *attr)
struct bpf_flow_dissector;
bool bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx,
- __be16 proto, int nhoff, int hlen);
+ __be16 proto, int nhoff, int hlen, unsigned int flags);
bool __skb_flow_dissect(const struct net *net,
const struct sk_buff *skb,
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index fa1c753dcdbc..88b9d743036f 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -3507,6 +3507,10 @@ enum bpf_task_fd_type {
BPF_FD_TYPE_URETPROBE, /* filename + offset */
};
+#define BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG (1U << 0)
+#define BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL (1U << 1)
+#define BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAP (1U << 2)
+
struct bpf_flow_keys {
__u16 nhoff;
__u16 thoff;
@@ -3528,6 +3532,7 @@ struct bpf_flow_keys {
__u32 ipv6_dst[4]; /* in6_addr; network order */
};
};
+ __u32 flags;
};
struct bpf_func_info {
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 80e6f3a6864d..4e41d15a1098 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -419,7 +419,7 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
time_start = ktime_get_ns();
for (i = 0; i < repeat; i++) {
retval = bpf_flow_dissect(prog, &ctx, eth->h_proto, ETH_HLEN,
- size);
+ size, 0);
if (signal_pending(current)) {
preempt_enable();
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 3e6fedb57bc1..50ed1a688709 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -784,7 +784,7 @@ static void __skb_flow_bpf_to_target(const struct bpf_flow_keys *flow_keys,
}
bool bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx,
- __be16 proto, int nhoff, int hlen)
+ __be16 proto, int nhoff, int hlen, unsigned int flags)
{
struct bpf_flow_keys *flow_keys = ctx->flow_keys;
u32 result;
@@ -795,6 +795,14 @@ bool bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx,
flow_keys->nhoff = nhoff;
flow_keys->thoff = flow_keys->nhoff;
+ BUILD_BUG_ON((int)BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG !=
+ (int)FLOW_DISSECTOR_F_PARSE_1ST_FRAG);
+ BUILD_BUG_ON((int)BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL !=
+ (int)FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL);
+ BUILD_BUG_ON((int)BPF_FLOW_DISSECTOR_F_STOP_AT_ENCAP !=
+ (int)FLOW_DISSECTOR_F_STOP_AT_ENCAP);
+ flow_keys->flags = flags;
+
preempt_disable();
result = BPF_PROG_RUN(prog, ctx);
preempt_enable();
@@ -914,7 +922,7 @@ bool __skb_flow_dissect(const struct net *net,
}
ret = bpf_flow_dissect(attached, &ctx, n_proto, nhoff,
- hlen);
+ hlen, flags);
__skb_flow_bpf_to_target(&flow_keys, flow_dissector,
target_container);
rcu_read_unlock();