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

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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: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Ben Greear
2012-02-11 15:39:30 +00:00
committed by Jeff Kirsher
parent 0184039a4b
commit 3bdc0eba0b
24 changed files with 104 additions and 6 deletions
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4
include/linux/skbuff.h
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@@ -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