Differential D26523 Diff 77988 sys/net/route/mpath_ctl.c

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sys/net/route/mpath_ctl.c

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#include <net/route/nhop_var.h>		#include <net/route/nhop_var.h>

/*		/*
* This file contains the supporting functions for adding/deleting/updating		* This file contains the supporting functions for adding/deleting/updating
* multipath routes to the routing table.		* multipath routes to the routing table.
*/		*/

SYSCTL_DECL(_net_route);		SYSCTL_DECL(_net_route);
		VNET_DEFINE(u_int, fib_hash_outbound) = 0;
		SYSCTL_UINT(_net_route, OID_AUTO, hash_outbound, CTLFLAG_RD \| CTLFLAG_VNET,
		aeUnsubmitted Not Done Inline Actions Maybe we should allow set it from loader.conf? I.e. use CTLFLAG_RDTUN flag? ae: Maybe we should allow set it from loader.conf? I.e. use CTLFLAG_RDTUN flag?
		&VNET_NAME(fib_hash_outbound), 0,
		"Compute flowid for locally-originated packets");

		/* Default entropy to add to the hash calculation for the outbound connections*/
		emasteUnsubmitted Not Done Inline Actions Where does this come from? emaste: Where does this come from?
		melifaroAuthorUnsubmitted Not Done Inline Actions That's the default key from Microsoft RSS spec, copied from rss_config.c melifaro: That's the default key from Microsoft RSS spec, copied from [rss_config.c](https://svnweb.
		uint8_t mpath_entropy_key[MPATH_ENTROPY_KEY_LEN] = {
		0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
		0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
		0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
		0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
		0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa,
		};


/*		/*
* Tries to add @rnd_add nhop to the existing set of nhops (@nh_orig) for the		* Tries to add @rnd_add nhop to the existing set of nhops (@nh_orig) for the
* prefix specified by @rt.		* prefix specified by @rt.
*		*
* Return 0 ans consumes rt / rnd_add nhop references. @rc gets populated		* Return 0 ans consumes rt / rnd_add nhop references. @rc gets populated
* with the operation result.		* with the operation result.
* Otherwise errno is returned.		* Otherwise errno is returned.
*		*
Show All 32 Lines	if (error != 0) {
continue;		continue;
}		}

error = change_route_conditional(rnh, rt, info, rnd_orig,		error = change_route_conditional(rnh, rt, info, rnd_orig,
&rnd_new, rc);		&rnd_new, rc);
if (error != EAGAIN)		if (error != EAGAIN)
break;		break;
RTSTAT_INC(rts_add_retry);		RTSTAT_INC(rts_add_retry);
		}

		if (V_fib_hash_outbound == 0 && error == 0 &&
		NH_IS_NHGRP(rc->rc_nh_new)) {
		/*
		* First multipath route got installed. Enable local
		* outbound connections hashing.
		*/
		if (bootverbose)
		printf("FIB: enabled flowid calculation for locally-originated packets\n");
		V_fib_hash_outbound = 1;
}		}

return (error);		return (error);
}		}

struct rt_match_info {		struct rt_match_info {
struct rt_addrinfo *info;		struct rt_addrinfo *info;
struct rtentry *rt;		struct rtentry *rt;
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