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BACKPORT: net: switch copy_bpf_fprog_from_user to sockptr_t

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Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.

Change-Id: I6219be8f1f4ab48e0a23ccc1856f5ed3c8e89ce3
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Christoph Hellwig 2020-07-23 08:08:47 +02:00 • committed by basamaryan
commit 8e629db75c
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GPG key ID: 210D5384FB2A5885
4 changed files with 11 additions and 8 deletions
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4
net/packet/af_packet.c
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@ -1589,7 +1589,7 @@ static void __fanout_set_data_bpf(struct packet_fanout *f, struct bpf_prog *new)
}
}
static int fanout_set_data_cbpf(struct packet_sock *po, char __user *data,
static int fanout_set_data_cbpf(struct packet_sock *po, sockptr_t data,
unsigned int len)
{
struct bpf_prog *new;
@ -1637,7 +1637,7 @@ static int fanout_set_data(struct packet_sock *po, char __user *data,
{
switch (po->fanout->type) {
case PACKET_FANOUT_CBPF:
return fanout_set_data_cbpf(po, data, len);
return fanout_set_data_cbpf(po, USER_SOCKPTR(data), len);
case PACKET_FANOUT_EBPF:
return fanout_set_data_ebpf(po, data, len);
default: