Commit 3bdc0eba authored by Ben Greear's avatar Ben Greear Committed by Jeff Kirsher
Browse files

net: Add framework to allow sending packets with customized CRC.



This is useful for testing RX handling of frames with bad
CRCs.

Requires driver support to actually put the packet on the
wire properly.
Signed-off-by: default avatarBen Greear <greearb@candelatech.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 0184039a
......@@ -73,6 +73,9 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
/* O_NONBLOCK clashes with the bits used for socket types. Therefore we
* have to define SOCK_NONBLOCK to a different value here.
*/
......
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* __ASM_AVR32_SOCKET_H */
......@@ -68,6 +68,9 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -66,5 +66,8 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -75,4 +75,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_IA64_SOCKET_H */
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_M32R_SOCKET_H */
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -86,6 +86,9 @@ To add: #define SO_REUSEPORT 0x0200 /* Allow local address and port reuse. */
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#ifdef __KERNEL__
/** sock_type - Socket types
......
......@@ -66,4 +66,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -65,6 +65,10 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 0x4023
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 0x4024
/* O_NONBLOCK clashes with the bits used for socket types. Therefore we
* have to define SOCK_NONBLOCK to a different value here.
*/
......
......@@ -73,4 +73,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_POWERPC_SOCKET_H */
......@@ -74,4 +74,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _ASM_SOCKET_H */
......@@ -62,6 +62,10 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 0x0026
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 0x0027
/* Security levels - as per NRL IPv6 - don't actually do anything */
#define SO_SECURITY_AUTHENTICATION 0x5001
#define SO_SECURITY_ENCRYPTION_TRANSPORT 0x5002
......
......@@ -77,4 +77,7 @@
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* _XTENSA_SOCKET_H */
......@@ -68,4 +68,8 @@
#define SO_WIFI_STATUS 41
#define SCM_WIFI_STATUS SO_WIFI_STATUS
#define SO_PEEK_OFF 42
/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS 43
#endif /* __ASM_GENERIC_SOCKET_H */
......@@ -80,6 +80,8 @@
* skbs on transmit */
#define IFF_UNICAST_FLT 0x20000 /* Supports unicast filtering */
#define IFF_TEAM_PORT 0x40000 /* device used as team port */
#define IFF_SUPP_NOFCS 0x80000 /* device supports sending custom FCS */
#define IF_GET_IFACE 0x0001 /* for querying only */
#define IF_GET_PROTO 0x0002
......
......@@ -1082,7 +1082,8 @@ struct net_device {
const struct header_ops *header_ops;
unsigned int flags; /* interface flags (a la BSD) */
unsigned int priv_flags; /* Like 'flags' but invisible to userspace. */
unsigned int priv_flags; /* Like 'flags' but invisible to userspace.
* See if.h for definitions. */
unsigned short gflags;
unsigned short padded; /* How much padding added by alloc_netdev() */
......@@ -2650,6 +2651,11 @@ static inline int netif_is_bond_slave(struct net_device *dev)
return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING;
}
static inline bool netif_supports_nofcs(struct net_device *dev)
{
return dev->priv_flags & IFF_SUPP_NOFCS;
}
extern struct pernet_operations __net_initdata loopback_net_ops;
/* Logging, debugging and troubleshooting/diagnostic helpers. */
......
......@@ -361,6 +361,7 @@ typedef unsigned char *sk_buff_data_t;
* ports.
* @wifi_acked_valid: wifi_acked was set
* @wifi_acked: whether frame was acked on wifi or not
* @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS
* @dma_cookie: a cookie to one of several possible DMA operations
* done by skb DMA functions
* @secmark: security marking
......@@ -459,7 +460,8 @@ struct sk_buff {
__u8 l4_rxhash:1;
__u8 wifi_acked_valid:1;
__u8 wifi_acked:1;
/* 10/12 bit hole (depending on ndisc_nodetype presence) */
__u8 no_fcs:1;
/* 9/11 bit hole (depending on ndisc_nodetype presence) */
kmemcheck_bitfield_end(flags2);
#ifdef CONFIG_NET_DMA
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment