Date: Wed, 18 Jul 2007 20:46:47 -0700 From: Julian Elischer <julian@elischer.org> To: karels@karels.net Cc: Tom Judge <tom@tomjudge.com>, freebsd-net@freebsd.org Subject: Re: 6.2 mtu now limits size of incomming packet Message-ID: <469EDEA7.9000606@elischer.org> In-Reply-To: <200707190130.l6J1UfS4027169@redrock.karels.net> References: <200707190130.l6J1UfS4027169@redrock.karels.net>
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Mike Karels wrote: >> There are also things to consider such as if a GigE card is connected to >> a GigE device (switch/card etc) and the card supports jumbo frames >> should the MRU be set to the max jumbo receive size for the card? This >> could cause confusion when people plug jumbo capable devices in with >> hardware limitations making the MRU lower than other devices on the network. > > Although we don't have an MRU explicitly, we don't enable reception > of jumbo frames without administrator action. There is an IFCAP_JUMBO_MTU > flag defined, but not previously used as far as I know. We added the > ability to set that flag with ifconfig, which enables reception of > jumbo frames without changing the MTU. Then, in ether_input, we accept > any packet that a NIC sees fit to receive. for what values of "we"? > > Mike > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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