Hello, This is the latest patch set of UDP memory accounting and limitation.
The number of pages for socket buffer is limited up to /proc/sys/net/ipv4/udp_mem. I removed the minimal limit number to use the feature from the former patch set (take5). And udp_init() is introduced to calculate default value. In addition, I added /proc/sys/net/ipv4/udp_rmem and /proc/sys/net/ipv4/udp_wmem to be able to allocate minimum buffer to each socket. As a result, UDP packet is drooped when the number of pages for socket buffer is beyond the limit and the socket already consumes minimum buffer. Detailed change log is below. Changelog take 5 -> take 6: * removed minimal limit of /proc/sys/net/udp_mem * added udp_init() for default value calculation of parameters * added /proc/sys/net/udp_rmem and /proc/sys/net/udp_rmem * added limitation code to ip_ufo_append_data() * improved accounting for receiving packet * fixed typos * rebased to 2.6.24-rc1 Changelog take 4 -> take 5: * removing unnessesary EXPORT_SYMBOLs * adding minimal limit of /proc/sys/net/udp_mem * bugfix of UDP limit affecting protocol other than UDP * introducing __ip_check_max_skb_pages() * using CTL_UNNUMBERED * adding udp_mem usage to Documentation/networking/ip_sysctl.txt Best regards, Hideo Aoki -- Hitachi Computer Products (America) Inc. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
