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net: Add support for filtering neigh dump by master device

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Add support for filtering neighbor dumps by master device by adding
the NDA_MASTER attribute to the dump request. A new netlink flag,
NLM_F_DUMP_FILTERED, is added to indicate the kernel supports the
request and output is filtered as requested.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2015-09-29 09:32:03 -07:00 • committed by David S. Miller
parent 5172393522
commit 21fdd092ac
2 changed files with 32 additions and 1 deletions
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1
include/uapi/linux/netlink.h
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@ -54,6 +54,7 @@ struct nlmsghdr {
#define NLM_F_ACK 4 /* Reply with ack, with zero or error code */
#define NLM_F_ECHO 8 /* Echo this request */
#define NLM_F_DUMP_INTR 16 /* Dump was inconsistent due to sequence change */
#define NLM_F_DUMP_FILTERED 32 /* Dump was filtered as requested */
/* Modifiers to GET request */
#define NLM_F_ROOT 0x100 /* specify tree root */