> I see the under connected mode the ipoib driver does not advertise S/G > (NETIF_F_SG) support at its features bitmap. I understand that this would > force the stack to do a copy in case the packet to be sent is made of > page/fragments held at the SKB, etc. > > Doesn't it make sense to support S/G also for connected mode? I know that > for CSUM support, if S/G is not supported, then the stack ignores the > NETIF_F_IP_CSUM > bit even if its being set by the nic, but does it apply also the other way - > that is if CSUM is not supported then the stack ignores NETIF_F_SG? if yes, > why?
As I understand things, F_SG is not used if F_IP_CSUM isn't set. Because the network stack would have to compute the the checksum anyway, so it basically has to linearize the skb anyway. - R. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
