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| author | Mark Johnston <markj@FreeBSD.org> | 2018-05-06 00:38:29 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2018-05-06 00:38:29 +0000 |
| commit | e505460228ceabb9de434b8416ee2b7faaa66d1a (patch) | |
| tree | 2e33aacd9c10f09b717945b802975b05ae30c370 /sys/net | |
| parent | bd92e6b6f5e6d2fa7b66753fb8ef1f3abb59418c (diff) | |
| download | src-e505460228ceabb9de434b8416ee2b7faaa66d1a.tar.gz src-e505460228ceabb9de434b8416ee2b7faaa66d1a.zip | |
Import the netdump client code.
This is a component of a system which lets the kernel dump core to
a remote host after a panic, rather than to a local storage device.
The server component is available in the ports tree. netdump is
particularly useful on diskless systems.
The netdump(4) man page contains some details describing the protocol.
Support for configuring netdump will be added to dumpon(8) in a future
commit. To use netdump, the kernel must have been compiled with the
NETDUMP option.
The initial revision of netdump was written by Darrell Anderson and
was integrated into Sandvine's OS, from which this version was derived.
Reviewed by: bdrewery, cem (earlier versions), julian, sbruno
MFC after: 1 month
X-MFC note: use a spare field in struct ifnet
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D15253
Notes
Notes:
svn path=/head/; revision=333283
Diffstat (limited to 'sys/net')
| -rw-r--r-- | sys/net/if.c | 4 | ||||
| -rw-r--r-- | sys/net/if_var.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/sys/net/if.c b/sys/net/if.c index a0016b8d9be6..588081a9bbff 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -87,6 +87,7 @@ #include <netinet/ip_carp.h> #ifdef INET #include <netinet/if_ether.h> +#include <netinet/netdump/netdump.h> #endif /* INET */ #ifdef INET6 #include <netinet6/in6_var.h> @@ -2769,6 +2770,9 @@ ifhwioctl(u_long cmd, struct ifnet *ifp, caddr_t data, struct thread *td) if (error == 0) { getmicrotime(&ifp->if_lastchange); rt_ifmsg(ifp); +#ifdef INET + NETDUMP_REINIT(ifp); +#endif } /* * If the link MTU changed, do network layer specific procedure. diff --git a/sys/net/if_var.h b/sys/net/if_var.h index 7ffb06e6ae52..c9e50a880724 100644 --- a/sys/net/if_var.h +++ b/sys/net/if_var.h @@ -70,6 +70,7 @@ struct route; /* if_output */ struct vnet; struct ifmedia; struct netmap_adapter; +struct netdump_methods; #ifdef _KERNEL #include <sys/mbuf.h> /* ifqueue only? */ @@ -369,6 +370,11 @@ struct ifnet { uint8_t if_pcp; /* + * Netdump hooks to be called while dumping. + */ + struct netdump_methods *if_netdump_methods; + + /* * Spare fields to be added before branching a stable branch, so * that structure can be enhanced without changing the kernel * binary interface. |