[PATCH net-next 2/6] bpf: drop useless bpf_fd member from cls/act

[Daniel Borkmann]

After setup we don't need to keep user space fd number around anymore, as
it also has no useful meaning for anyone, just remove it.

Signed-off-by: Daniel Borkmann <dan...@iogearbox.net>
Acked-by: Alexei Starovoitov <a...@kernel.org>
---
 net/sched/act_bpf.c | 7 -------
 net/sched/cls_bpf.c | 9 +--------
 2 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index 1aa4ecf..84c1d2d 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -28,7 +28,6 @@ struct tcf_bpf_cfg {
        struct bpf_prog *filter;
        struct sock_filter *bpf_ops;
        const char *bpf_name;
-       u32 bpf_fd;
        u16 bpf_num_ops;
        bool is_ebpf;
 };
@@ -118,9 +117,6 @@ static int tcf_bpf_dump_bpf_info(const struct tcf_bpf *prog,
 static int tcf_bpf_dump_ebpf_info(const struct tcf_bpf *prog,
                                  struct sk_buff *skb)
 {
-       if (nla_put_u32(skb, TCA_ACT_BPF_FD, prog->bpf_fd))
-               return -EMSGSIZE;
-
        if (prog->bpf_name &&
            nla_put_string(skb, TCA_ACT_BPF_NAME, prog->bpf_name))
                return -EMSGSIZE;
@@ -233,7 +229,6 @@ static int tcf_bpf_init_from_efd(struct nlattr **tb, struct 
tcf_bpf_cfg *cfg)
                }
        }
 
-       cfg->bpf_fd = bpf_fd;
        cfg->bpf_name = name;
        cfg->filter = fp;
        cfg->is_ebpf = true;
@@ -332,8 +327,6 @@ static int tcf_bpf_init(struct net *net, struct nlattr *nla,
 
        if (cfg.bpf_num_ops)
                prog->bpf_num_ops = cfg.bpf_num_ops;
-       if (cfg.bpf_fd)
-               prog->bpf_fd = cfg.bpf_fd;
 
        prog->tcf_action = parm->action;
        rcu_assign_pointer(prog->filter, cfg.filter);
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 52dc85a..28cb5fa 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -45,10 +45,7 @@ struct cls_bpf_prog {
        u32 gen_flags;
        struct tcf_exts exts;
        u32 handle;
-       union {
-               u32 bpf_fd;
-               u16 bpf_num_ops;
-       };
+       u16 bpf_num_ops;
        struct sock_filter *bpf_ops;
        const char *bpf_name;
        struct tcf_proto *tp;
@@ -377,7 +374,6 @@ static int cls_bpf_prog_from_efd(struct nlattr **tb, struct 
cls_bpf_prog *prog,
        }
 
        prog->bpf_ops = NULL;
-       prog->bpf_fd = bpf_fd;
        prog->bpf_name = name;
        prog->filter = fp;
 
@@ -561,9 +557,6 @@ static int cls_bpf_dump_bpf_info(const struct cls_bpf_prog 
*prog,
 static int cls_bpf_dump_ebpf_info(const struct cls_bpf_prog *prog,
                                  struct sk_buff *skb)
 {
-       if (nla_put_u32(skb, TCA_BPF_FD, prog->bpf_fd))
-               return -EMSGSIZE;
-
        if (prog->bpf_name &&
            nla_put_string(skb, TCA_BPF_NAME, prog->bpf_name))
                return -EMSGSIZE;
-- 
1.9.3