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rtnl: add option for setting link xdp prog

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Sets the bpf program represented by fd as an early filter in the rx path
of the netdev. The fd must have been created as BPF_PROG_TYPE_XDP.
Providing a negative value as fd clears the program. Getting the fd back
via rtnl is not possible, therefore reading of this value merely
provides a bool whether the program is valid on the link or not.

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Brenden Blanco 2016-07-19 12:16:49 -07:00 • committed by David S. Miller
parent a7862b4584
commit d1fdd91386
2 changed files with 76 additions and 0 deletions
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12
include/uapi/linux/if_link.h
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@ -156,6 +156,7 @@ enum {
IFLA_GSO_MAX_SEGS,
IFLA_GSO_MAX_SIZE,
IFLA_PAD,
IFLA_XDP,
__IFLA_MAX
};
@ -843,4 +844,15 @@ enum {
};
#define LINK_XSTATS_TYPE_MAX (__LINK_XSTATS_TYPE_MAX - 1)
/* XDP section */
enum {
IFLA_XDP_UNSPEC,
IFLA_XDP_FD,
IFLA_XDP_ATTACHED,
__IFLA_XDP_MAX,
};
#define IFLA_XDP_MAX (__IFLA_XDP_MAX - 1)
#endif /* _UAPI_LINUX_IF_LINK_H */