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[L2TP]: Changes to existing ppp and socket kernel headers for L2TP

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Add struct sockaddr_pppol2tp to carry L2TP-specific address
information for the PPPoX (PPPoL2TP) socket. Unfortunately we can't
use the union inside struct sockaddr_pppox because the L2TP-specific
data is larger than the current size of the union and we must preserve
the size of struct sockaddr_pppox for binary compatibility.

Also add a PPPIOCGL2TPSTATS ioctl to allow userspace to obtain
L2TP counters and state from the kernel.

Add new if_pppol2tp.h header.

[ Modified to use aligned_u64 in statistics structure -DaveM ]

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
James Chapman 2007-06-27 15:43:43 -07:00 • committed by David S. Miller
parent 342f0234c7
commit cf14a4d067
5 changed files with 101 additions and 2 deletions
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16
include/linux/if_ppp.h
View file

@ -110,6 +110,21 @@ struct ifpppcstatsreq {
struct ppp_comp_stats stats;
};
/* For PPPIOCGL2TPSTATS */
struct pppol2tp_ioc_stats {
__u16 tunnel_id; /* redundant */
__u16 session_id; /* if zero, get tunnel stats */
__u32 using_ipsec:1; /* valid only for session_id == 0 */
aligned_u64 tx_packets;
aligned_u64 tx_bytes;
aligned_u64 tx_errors;
aligned_u64 rx_packets;
aligned_u64 rx_bytes;
aligned_u64 rx_seq_discards;
aligned_u64 rx_oos_packets;
aligned_u64 rx_errors;
};
#define ifr__name b.ifr_ifrn.ifrn_name
#define stats_ptr b.ifr_ifru.ifru_data
@ -146,6 +161,7 @@ struct ifpppcstatsreq {
#define PPPIOCDISCONN _IO('t', 57) /* disconnect channel */
#define PPPIOCATTCHAN _IOW('t', 56, int) /* attach to ppp channel */
#define PPPIOCGCHAN _IOR('t', 55, int) /* get ppp channel number */
#define PPPIOCGL2TPSTATS _IOR('t', 54, struct pppol2tp_ioc_stats)
#define SIOCGPPPSTATS (SIOCDEVPRIVATE + 0)
#define SIOCGPPPVER (SIOCDEVPRIVATE + 1) /* NEVER change this!! */